/* Modern tech aesthetic: beige + dark-brown palette, glassmorphism, animated background */
:root {
    --bg-1: #f6efe6;    /* light beige */
    --bg-2: #efe6d6;
    --accent: #3b2f2f;  /* dark brown */
    --accent-2: #7a5a4a; /* warm mid-brown */
    --glass: rgba(255,255,255,0.6);
    --muted: #6b5b4b;
    --success: #2e7d5e;
    --danger: #c0392b;
    --shadow: 0 8px 30px rgba(34,30,30,0.08);
    --glass-border: rgba(255,255,255,0.25);
    --trans: cubic-bezier(.2,.9,.3,1);
    /* Text color variables for consistency */
    --text-primary: #3b2f2f;
    --text-secondary: #6b5b4b;
    --primary-color: #3b2f2f;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
    color-scheme: light;
}

/* Reset */
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
    background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 60%);
    color: var(--accent);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden; /* locked by default, only scrollable sections will override */
}

/* Floating decorative background */
#floating-bg {
    position: fixed; inset: 0; z-index: 0;
    pointer-events: none; overflow: hidden;
}
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(48px);
    opacity: 0.55;
    transform: translate3d(0,0,0);
}
.blob {
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}
.blob.b1 {
    width: 420px;
    height: 420px;
    left: -8%;
    top: -6%;
    background: #8c6b5a;
    animation:
        floaty 14s infinite,
        sway 16s infinite;
}
.blob.b2 {
    width: 300px;
    height: 300px;
    right: -6%;
    top: 8%;
    background: #cdb69b;
    animation:
        floaty 18s infinite reverse,
        sway 20s infinite reverse;
}
.blob.b3 {
    width: 180px;
    height: 180px;
    left: 18%;
    bottom: -6%;
    background: #a2876b;
    animation:
        floaty 20s infinite,
        sway 24s infinite;
}

@keyframes floaty {
    0% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-18px) scale(1.02); }
    100% { transform: translateY(0) scale(1); }
}

@keyframes sway {
    0% { transform: translateX(0) rotate(0); }
    33% { transform: translateX(10px) rotate(2deg); }
    66% { transform: translateX(-10px) rotate(-2deg); }
    100% { transform: translateX(0) rotate(0); }
}

/* slight grid overlay for subtle tech vibe */
.grid-lines {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(59,47,47,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,47,47,0.03) 1px, transparent 1px);
    background-size: 120px 120px;
    mix-blend-mode: overlay;
    opacity: 0.9;
}

/* Main container */
#main-frame {
    position: relative;
    z-index: 5;
    width: 100%;
    max-width: 1100px;
    margin: 32px;
    padding: 28px;
    border-radius: 14px;
    box-shadow: var(--shadow);
    background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(255,255,255,0.75));
    border: 1px solid rgba(255,255,255,0.35);
    overflow: hidden;
}

/* Panels */
.panel { padding: 6px; display: block; }
.panel-inner { padding: 18px; display: flex; flex-direction: column; gap: 14px; }

/* Testing screen specific layout - compact to fit viewport */
#testing-screen .panel-inner {
    padding: 12px 18px;
    gap: 8px;
    height: calc(100vh - 24px);
    max-height: calc(100vh - 24px);
    overflow: hidden;
    justify-content: space-between;
}

/* Ensure all testing elements are properly sized */
#testing-screen .test-guidance {
    flex-shrink: 0;
}

#testing-screen .progress-section {
    flex-shrink: 0;
}

#testing-screen .test-stage {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

#testing-screen .test-controls {
    flex-shrink: 0;
}
.center { align-items: center; text-align: center; }

/* BRAND */
.brand { font-weight: 800; color: var(--accent); margin: 0; font-size: 22px; letter-spacing: 0.6px; }
.lead { color: var(--muted); margin: 0 0 6px 0; font-weight: 500; }

/* Glass card */
.glass-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(255,255,255,0.4));
    border-radius: 12px;
    padding: 18px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 6px 20px rgba(0,0,0,0.06);
    backdrop-filter: blur(6px) saturate(120%);
    transition: all 400ms var(--trans);
    transform: translateZ(0);
}
.glass-card:hover {
    transform: translateY(-4px) translateZ(0);
    box-shadow: 0 12px 28px rgba(0,0,0,0.08);
    border-color: rgba(255,255,255,0.4);
    background: linear-gradient(180deg, rgba(255,255,255,0.7), rgba(255,255,255,0.5));
}
.glass-card.narrow { max-width: 720px; margin: 0 auto; }

/* FORM layout */
.login-form .row { display: flex; gap: 12px; }
.row.compact { gap: 18px; }
.field { flex: 1; display: flex; flex-direction: column; gap: 8px; }
label { font-weight: 600; color: var(--accent); font-size: 13px; }
input[type="text"] {
    border-radius: 8px; padding: 10px 12px; border: 1px solid rgba(59,47,47,0.08);
    outline: none; font-size: 15px; background: rgba(255,255,255,0.9);
    transition: all 300ms var(--trans);
}
input[type="text"]:hover {
    border-color: rgba(59,47,47,0.15);
    box-shadow: 0 4px 12px rgba(59,47,47,0.04);
}
input[type="text"]:focus {
    box-shadow: 0 8px 24px rgba(59,47,47,0.08), 0 0 0 3px rgba(59,47,47,0.08);
    transform: translateY(-2px);
    border-color: var(--accent);
    background: rgba(255,255,255,0.95);
}

/* chips */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 12px; border-radius: 999px; background: rgba(59,47,47,0.04);
    font-weight: 600; color: var(--accent); cursor: pointer;
    transition: transform 140ms var(--trans), background 140ms var(--trans);
}
.chip input { margin-right: 6px; }
.chip:hover { transform: translateY(-3px); background: rgba(59,47,47,0.06); }

/* BUTTONS */
.btn {
    border: none;
    cursor: pointer;
    border-radius: 10px;
    padding: 10px 14px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 300ms var(--trans);
    position: relative;
    overflow: hidden;
}
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(255,255,255,0.2), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity 300ms var(--trans);
}
.btn:hover::after {
    opacity: 1;
}
.btn.large {
    padding: 12px 20px;
    font-size: 15px;
    border-radius: 12px;
}
.btn.primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 20px rgba(59,47,47,0.08);
}
.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(59,47,47,0.15);
}
.btn.success {
    background: var(--success);
    color: white;
}
.btn.success:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(46,125,94,0.15);
}
.btn.danger {
    background: var(--danger);
    color: white;
}
.btn.danger:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(192,57,43,0.15);
}
.btn.ghost {
    background: transparent;
    color: var(--accent);
    border: 1px solid rgba(59,47,47,0.06);
}
.btn.ghost:hover {
    background: rgba(59,47,47,0.03);
    transform: translateY(-2px);
}
.btn:active {
    transform: translateY(1px) scale(0.98) !important;
    transition: all 100ms var(--trans);
}

/* CTA row */
.cta-row { display: flex; gap: 12px; margin-top: 10px; align-items: center; }
.cta-row.right { justify-content: flex-end; }
.cta-row.center { justify-content: center; }

/* muted helper */
.muted { color: var(--muted); font-size: 13px; }

/* Device check row */
.channel-row { display: flex; align-items: center; gap: 16px; justify-content: space-between; margin-top: 10px; }
.channel-btn {
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    padding: 14px 18px; border-radius: 12px; min-width: 120px;
    transition: transform 200ms var(--trans), box-shadow 200ms var(--trans);
    background: rgba(255,255,255,0.6); border: 1px solid rgba(59,47,47,0.04);
}
.channel-btn:hover { transform: translateY(-6px); box-shadow: 0 10px 24px rgba(0,0,0,0.06); }
.channel-btn .ear-icon { font-size: 26px; }
.channel-status-wrap { flex: 1; text-align: center; }

/* TESTING SCREEN layout */
.top-row { display: flex; gap: 12px; align-items: center; }
progress { width: 100%; height: 12px; -webkit-appearance: none; appearance: none; border-radius: 8px; overflow: hidden; background: rgba(59,47,47,0.06); }
progress::-webkit-progress-bar { background: transparent; }
progress::-webkit-progress-value { background: linear-gradient(90deg,var(--accent), var(--accent-2)); height: 12px; display: block; }
.progress-label-wrap { min-width: 70px; text-align: right; color: var(--muted); font-weight: 600; }

.test-stage { 
    margin-top: 8px; 
    display: flex; 
    justify-content: center; 
    flex: 1;
    align-items: center;
}
.ears-wrap { 
    display: flex; 
    align-items: center; 
    gap: 20px; 
    width: 100%; 
    justify-content: space-between;
    height: 100%;
}

/* ear cards */
.ear-card {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 400ms var(--trans);
    box-shadow: 0 6px 18px rgba(0,0,0,0.06);
    border: 1px solid rgba(59,47,47,0.04);
    background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(255,255,255,0.5));
    cursor: pointer;
    transform-style: preserve-3d;
    perspective: 1000px;
    flex-shrink: 0;
}
.ear-visual {
    font-size: 32px;
    transition: all 400ms var(--trans);
}
.ear-caption {
    color: var(--muted);
    font-weight: 700;
    font-size: 0.85rem;
    transition: all 400ms var(--trans);
}

/* active / inactive states */
.ear-inactive {
    filter: grayscale(80%) brightness(0.9);
    opacity: 0.6;
    transform: scale(0.96) rotateX(4deg);
}
.ear-inactive:hover {
    transform: scale(0.98) rotateX(2deg);
    opacity: 0.7;
}
.ear-active {
    filter: none;
    opacity: 1;
    transform: scale(1.04) rotateX(0deg);
    border: 1px solid rgba(59,47,47,0.09);
    box-shadow: 0 14px 40px rgba(59,47,47,0.1);
    background: linear-gradient(180deg, rgba(255,255,255,0.8), rgba(255,255,255,0.6));
}
.ear-active:hover {
    transform: scale(1.06) rotateX(-2deg);
    box-shadow: 0 18px 48px rgba(59,47,47,0.12);
}
.ear-active .ear-visual {
    transform: translateY(-2px);
}
.ear-active:hover .ear-visual {
    transform: translateY(-4px) scale(1.05);
}

/* central response */
.center-response { 
    flex: 1; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 8px; 
    padding: 0 12px;
    justify-content: center;
}
.response-frame {
    width: 300px; 
    border-radius: 10px; 
    padding: 12px;
    background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(255,255,255,0.75));
    border: 1px solid rgba(59,47,47,0.04); 
    box-shadow: 0 6px 24px rgba(0,0,0,0.04);
}
.response-buttons { 
    display: flex; 
    gap: 10px; 
    justify-content: center; 
    margin-top: 8px; 
}

/* Results area */
.chart-wrap { 
    margin-top: 12px; 
    background: white; 
    padding: 12px; 
    border-radius: 10px; 
    border: 1px solid rgba(59,47,47,0.04);
    overflow: visible;
    width: 100%;
    box-sizing: border-box;
}

.chart-wrap canvas {
    max-width: 100% !important;
    height: auto !important;
}
.table-wrap { margin-top: 12px; }
#results-table { width: 100%; border-collapse: collapse; background: white; border-radius: 8px; overflow: hidden; }

/* Ensure results screen has proper chart display */
#results-screen .panel-inner {
    overflow: visible;
    max-width: none;
}

#results-screen .chart-container,
#results-screen .chart-container-small {
    width: 100%;
    min-height: 500px;
    overflow: visible;
    padding: 2rem;
}

#audiogram-chart {
    max-width: 100% !important;
    height: auto !important;
}

/* History audiogram specific styling */
.history-audiogram-container {
    width: 100%;
    height: 500px;
    min-height: 500px;
    margin: 1rem 0;
    overflow: visible;
    position: relative;
}

.history-audiogram-container .chart-container {
    height: 100%;
    width: 100%;
    padding: 1rem;
    margin: 0;
    overflow: visible;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    box-sizing: border-box;
}

#history-audiogram-chart {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    max-height: none !important;
}

#history-audiogram-view {
    overflow: visible;
}

#history-audiogram-view .tab-content {
    overflow: visible;
    min-height: 600px;
}

/* Responsive design for history audiogram */
@media (max-width: 768px) {
    .history-audiogram-container {
        height: 400px;
        min-height: 400px;
        margin: 0.5rem 0;
    }
    
    .history-audiogram-container .chart-container {
        padding: 0.5rem;
    }
    
    #history-audiogram-view .tab-content {
        min-height: 500px;
    }
}
#results-table th, #results-table td { padding: 10px; text-align: center; border-bottom: 1px solid #f1e8df; color: var(--muted); }
#results-table thead th { background: #faf6f2; color: var(--accent); font-weight: 700; }

/* small / responsive */
@media (max-width:900px) {
    .ears-wrap { flex-direction: column; gap: 12px; align-items: center; }
    .ear-card { width: 130px; height: 130px; }
    .center-response { width: 100%; }
    .login-form .row { flex-direction: column; }
}

/* Hide section */
/* Loading and transition states */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    animation: fadeIn 0.3s var(--trans);
}

.loading::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border: 2px solid var(--accent);
    border-top-color: transparent;
    border-radius: 50%;
    top: calc(50% - 12px);
    left: calc(50% - 12px);
    z-index: 101;
    animation: spin 0.8s linear infinite;
}

.fade-enter {
    animation: fadeIn 0.4s var(--trans);
}

.hidden {
    display: none !important;
    opacity: 0;
    pointer-events: none;
}

/* Screens that can scroll only */
.scrollable {
    overflow-y: auto;
    max-height: 100vh;
    padding-right: 8px; /* avoid scrollbar overlay on content */
}

/* Each frame should fill screen and center content */
#user-info-frame,
#test-frame,
#results-frame,
#response-frame {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.4s ease;
}

/* Apply scroll only where needed */
#user-info-frame.scrollable,
#results-frame.scrollable {
    justify-content: flex-start;
    align-items: stretch;
}

/* Smooth fade for visible frames */
#user-info-frame:not(.hidden),
#test-frame:not(.hidden),
#results-frame:not(.hidden),
#response-frame:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}
/* Default main frame: no scroll */
#main-frame {
    max-height: calc(100vh - 48px);
    overflow: visible;
}

/* Pages that need scrolling */
#main-frame.scrollable {
    overflow-y: auto;
    overflow-x: hidden;
}
/* Test History Styles */
.history-list {
    max-height: 400px;
    overflow-y: auto;
}

/* Ensure history screen doesn't clip charts */
#history-screen {
    overflow: visible;
}

#history-screen .panel-inner {
    overflow: visible;
    max-height: none;
}

.history-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    transition: all 0.2s ease;
}

.history-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.history-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.test-date {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.result-summary {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-summary span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

/* Loading and Empty States */
.loading-state, .empty-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.loading-state::before {
    content: "⏳";
    display: block;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.empty-state::before {
    content: "📊";
    display: block;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

/* Auth/Guest Message Styling */
#guest-message, #auth-message {
    margin-top: 1rem;
}

#guest-message p:last-child {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
    padding: 0.5rem;
    margin-top: 0.5rem;
}

/* Responsive adjustments for profile elements */
@media (max-width: 768px) {
    .profile-actions {
        flex-direction: column;
    }
    
    .result-summary {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .history-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}
/* Enhanced Test History Styles */
.history-item.recent {
    border-left: 4px solid #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.frequency-breakdown {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.frequency-breakdown h5 {
    margin: 0 0 0.75rem 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.freq-headers {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
}

.frequency-grid {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.freq-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 0.5rem;
    padding: 0.25rem 0;
    font-size: 0.85rem;
    font-family: 'Courier New', monospace;
    text-align: center;
}

.freq-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.left-val {
    color: #3b82f6;
}

.right-val {
    color: #ef4444;
}

.diff-val {
    color: var(--text-muted);
}

.diff-val.significant {
    color: #f59e0b;
    font-weight: 600;
}

.result-summary .avg-result {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
}

.result-summary .diff-result {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
}

.result-summary .diff-result.significant {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #f59e0b;
}

.session-info {
    margin-top: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.session-info small {
    font-family: 'Courier New', monospace;
    opacity: 0.7;
}

/* Responsive adjustments for detailed history */
@media (max-width: 768px) {
    .freq-headers, .freq-row {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        font-size: 0.75rem;
    }
    
    .frequency-breakdown h5 {
        font-size: 0.85rem;
    }
    
    .result-summary {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Animation for new test entries */
@keyframes slideInFromTop {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.history-item.recent {
    animation: slideInFromTop 0.3s ease-out;
}
/* Enhanced History Statistics */
.history-stats {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Enhanced Session Items */
.history-item.incomplete {
    border-left: 4px solid #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.session-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.session-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
}

.test-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

/* Quality Badges */
.quality-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge.success {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge.warning {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge.alert {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge.info {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Enhanced Frequency Breakdown */
.breakdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.breakdown-header h5 {
    margin: 0;
}

.btn.tiny {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.freq-row.significant-diff {
    background: rgba(245, 158, 11, 0.1);
    border-radius: 4px;
    padding: 0.25rem;
}

/* Load More Button */
.load-more-btn {
    width: 100%;
    margin-top: 1rem;
    padding: 0.75rem;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    background: transparent;
    transition: all 0.2s ease;
}

.load-more-btn:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .session-title {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .session-meta {
        align-items: flex-start;
    }
    
    .quality-badges {
        order: -1;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
}
/* History Tab Navigation */
.history-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--text-primary);
    border-bottom-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

/* Audiogram Controls */
.audiogram-controls {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.control-section {
    margin-bottom: 1rem;
}

.control-section:last-child {
    margin-bottom: 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.control-section h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1rem;
}

/* Session Toggles */
.session-toggles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 0.75rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.2);
}

.session-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.session-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.session-toggle.incomplete {
    border-left: 3px solid #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.session-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #3b82f6;
    cursor: pointer;
}

.session-toggle label {
    flex: 1;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.session-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.session-title {
    font-weight: 600;
    color: var(--text-primary);
}

.session-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.session-time {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: 'Courier New', monospace;
}

.session-summary {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 600px;
    width: 100%;
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 2rem;
    overflow: visible;
    box-sizing: border-box;
    min-height: 600px;
}

.chart-container canvas {
    max-width: calc(100% - 40px) !important;
    max-height: calc(100% - 40px) !important;
    display: block;
    margin: 0 auto;
}

/* Audiogram Legend */
.audiogram-legend {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 1rem;
}

.legend-section h5 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.legend-items {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.legend-symbol {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #3b82f6;
}

.legend-symbol.triangle {
    border-radius: 0;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 10px solid #ef4444;
    background: transparent;
}

.legend-note {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .history-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: center;
        border-bottom: none;
        border-left: 3px solid transparent;
    }
    
    .tab-btn.active {
        border-bottom: none;
        border-left-color: #3b82f6;
    }
    
    .session-toggles {
        grid-template-columns: 1fr;
        max-height: 250px;
    }
    
    .session-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .control-section:last-child {
        flex-direction: column;
    }
    
    .chart-container {
        height: 500px;
        padding: 1rem;
        overflow: visible;
        min-height: 500px;
    }
    
    .chart-container canvas {
        max-width: calc(100% - 20px) !important;
        max-height: calc(100% - 20px) !important;
    }
    
    .legend-items {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Animation for smooth transitions */
.tab-content {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
/* Interaural Difference Analysis Styles */
.interaural-analysis {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 1rem;
    margin-top: 1rem;
}

.interaural-analysis h6 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
}

.difference-grid {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.diff-headers {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 0.5rem;
    padding: 0.5rem 0;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.diff-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 0.5rem;
    padding: 0.4rem 0;
    font-size: 0.85rem;
    font-family: 'Courier New', monospace;
    text-align: center;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.diff-row:hover {
    background: rgba(255, 255, 255, 0.05);
}

.diff-row.significant-difference {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.diff-row .freq-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.diff-row .left-val {
    color: #3b82f6;
}

.diff-row .right-val {
    color: #ef4444;
}

.diff-row .diff-val {
    color: var(--text-muted);
    font-weight: 500;
}

.diff-row .diff-val.significant {
    color: #f59e0b;
    font-weight: 700;
}

.difference-summary {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 0.75rem;
}

.summary-stats {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.summary-stats span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-family: 'Courier New', monospace;
    color: var(--text-secondary);
}

.analysis-note {
    text-align: center;
    margin: 0;
    font-style: italic;
}

/* Interaural Section in Results */
.interaural-section {
    margin: 2rem 0;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
}

.chart-container-small {
    position: relative;
    height: 400px;
    width: 100%;
    margin: 1rem 0;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 2rem;
    overflow: visible;
    box-sizing: border-box;
    min-height: 400px;
}

.chart-container-small canvas {
    max-width: calc(100% - 40px) !important;
    max-height: calc(100% - 40px) !important;
    display: block;
    margin: 0 auto;
}

.analysis-disclaimer {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
    padding: 0.75rem;
    margin-top: 1rem;
}

.analysis-disclaimer p {
    margin: 0;
    text-align: center;
}

/* Responsive Design for Interaural Analysis */
@media (max-width: 768px) {
    .diff-headers, .diff-row {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        font-size: 0.75rem;
    }
    
    .summary-stats {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .interaural-analysis {
        padding: 0.75rem;
    }
    
    .chart-container-small {
        height: 350px;
        padding: 1rem;
        overflow: visible;
        min-height: 350px;
    }
    
    .chart-container-small canvas {
        max-width: calc(100% - 20px) !important;
        max-height: calc(100% - 20px) !important;
    }
}

/* Animation for interaural analysis appearance */
.interaural-analysis, .interaural-section {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Trend Analysis Styles */
.trend-analysis-section {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1rem;
}

.trend-analysis-section h4 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.trend-summary {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.trend-badge {
    padding: 0.3rem 0.8rem;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.trend-badge.trend-stable {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.trend-badge.trend-variable {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.trend-badge.trend-changing {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.trend-badge.trend-unknown {
    background: rgba(107, 114, 128, 0.2);
    color: #6b7280;
    border: 1px solid rgba(107, 114, 128, 0.3);
}

.trend-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex: 1;
}

.trend-details {
    text-align: center;
    font-style: italic;
}

/* Detailed Trend Analysis */
.detailed-trend-analysis {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 1rem;
    margin: 1rem 0;
}

.detailed-trend-analysis h5, .detailed-trend-analysis h6 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-weight: 600;
}

.detailed-trend-analysis h5 {
    font-size: 1rem;
}

.detailed-trend-analysis h6 {
    font-size: 0.9rem;
    margin-top: 1rem;
}

.trend-classification {
    margin-bottom: 1rem;
}

.trend-classification .trend-description {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.metric-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 0.75rem;
    text-align: center;
}

.metric-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.metric-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}

.timeline-info {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.timeline-info span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.trend-disclaimer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 0.75rem;
    margin-top: 1rem;
    text-align: center;
}

/* Responsive Design for Trend Analysis */
@media (max-width: 768px) {
    .trend-summary {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .timeline-info {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .trend-badge {
        align-self: flex-start;
    }
}

/* Animation for trend analysis */
.trend-analysis-section, .detailed-trend-analysis {
    animation: fadeInUp 0.4s ease-out;
}

/* Educational Summary Styles */
.educational-summary-section {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    animation: fadeInUp 0.4s ease-out;
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.summary-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.summary-period {
    color: var(--text-muted);
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.summary-main-message {
    background: rgba(255, 255, 255, 0.03);
    border-left: 4px solid #3b82f6;
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.summary-main-message.summary-stable {
    border-left-color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.summary-main-message.summary-variable {
    border-left-color: #3b82f6;
    background: rgba(59, 130, 246, 0.05);
}

.summary-main-message.summary-changing {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.main-message {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
}

.summary-content {
    display: grid;
    gap: 1.25rem;
}

.summary-observations, .summary-education, .summary-recommendations {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 1rem;
}

.summary-content h6 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.observation-list, .education-list, .recommendation-list {
    margin: 0;
    padding-left: 1.25rem;
    list-style-type: disc;
}

.observation-list li, .education-list li, .recommendation-list li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.observation-list li:last-child, 
.education-list li:last-child, 
.recommendation-list li:last-child {
    margin-bottom: 0;
}

.summary-observations {
    border-left: 3px solid #3b82f6;
}

.summary-education {
    border-left: 3px solid #10b981;
}

.summary-recommendations {
    border-left: 3px solid #f59e0b;
}

.summary-disclaimer {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
    padding: 1rem;
    margin-top: 1.5rem;
    text-align: center;
}

.disclaimer-text {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Professional Guidance Styles */
.professional-guidance {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.professional-guidance h5, .professional-guidance h6 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-weight: 600;
}

.professional-guidance h5 {
    font-size: 1rem;
    text-align: center;
    margin-bottom: 1.25rem;
}

.professional-guidance h6 {
    font-size: 0.9rem;
}

.guidance-notes, .seek-help-section {
    margin-bottom: 1.25rem;
}

.guidance-list, .seek-help-list {
    margin: 0;
    padding-left: 1.25rem;
    list-style-type: disc;
}

.guidance-list li, .seek-help-list li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.seek-help-section {
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 6px;
    padding: 1rem;
}

.consultation-reminder {
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 6px;
    padding: 1rem;
    text-align: center;
}

.consultation-text {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Responsive Design for Educational Summary */
@media (max-width: 768px) {
    .summary-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .summary-content {
        gap: 1rem;
    }
    
    .educational-summary-section, .professional-guidance {
        padding: 1rem;
    }
    
    .summary-main-message {
        padding: 0.75rem;
    }
    
    .main-message {
        font-size: 0.95rem;
    }
}

/* Onboarding Assistant Styles */
.onboarding-assistant {
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    max-height: 600px;
    overflow-y: auto;
}

.onboarding-assistant.collapsed {
    padding: 1rem 1.5rem;
    max-height: 80px;
    overflow: hidden;
}

.onboarding-assistant.collapsed .assistant-content {
    display: none;
}

.assistant-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.assistant-icon {
    font-size: 2rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.assistant-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    flex: 1;
}

.btn.tiny {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 6px;
}

/* Profile Section Styles */
#user-profile-info {
    margin: 1rem 0 !important;
    padding: 1.5rem;
    border-radius: 12px;
}

.profile-summary {
    margin-bottom: 1rem;
}

.profile-summary h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.profile-summary p {
    margin: 0;
    color: var(--text-secondary);
}

.profile-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.profile-actions .btn {
    flex: 1;
    min-width: 120px;
}

/* Step Navigation */
.step-navigation {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.step-btn {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    font-weight: 500;
}

.step-btn:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
    color: var(--text-secondary);
}

.step-btn.active {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-color: #3b82f6;
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Step Content */
.step-content {
    position: relative;
    min-height: 250px;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.step-panel {
    display: none;
    animation: fadeInUp 0.3s ease-out;
}

.step-panel.active {
    display: block;
}

.step-panel h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 0.5rem;
}

.step-info {
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-info p {
    margin-bottom: 1rem;
}

.step-info h5 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem 0;
}

.step-info h6 {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin: 1rem 0 0.5rem 0;
}

/* Info Grid */
.info-grid {
    display: grid;
    gap: 0.75rem;
    margin: 1rem 0;
}

.info-item {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 0.875rem;
    transition: all 0.2s ease;
}

.info-item:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.15);
}

.info-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.info-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.info-item p {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.4;
}

.important-note {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Setup Checklist */
.setup-checklist {
    display: grid;
    gap: 0.75rem;
    margin: 1rem 0;
}

.checklist-item {
    display: flex;
    gap: 0.875rem;
    align-items: flex-start;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 0.875rem;
    transition: all 0.2s ease;
}

.checklist-item:hover {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.15);
}

.check-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.checklist-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.checklist-item p {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.4;
}

/* FAQ Styles */
.faq-list {
    display: grid;
    gap: 0.5rem;
    margin: 1rem 0;
}

.faq-item {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.2s ease;
}

.faq-item:hover {
    border-color: rgba(255,255,255,0.2);
}

.faq-item.open {
    border-color: rgba(59, 130, 246, 0.3);
    background: rgba(59, 130, 246, 0.05);
}

.faq-question {
    width: 100%;
    padding: 0.875rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.faq-question:hover {
    background: rgba(255,255,255,0.05);
}

.faq-toggle {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--text-muted);
    transition: transform 0.2s ease;
    margin-left: 0.5rem;
}

.faq-item.open .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding: 0 1rem 0.875rem 1rem;
    color: var(--text-secondary);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.faq-answer p {
    margin: 0;
    line-height: 1.5;
    font-size: 0.85rem;
}

/* Readiness Check */
.readiness-check {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 1.25rem;
    margin: 1rem 0;
}

.readiness-check h5 {
    margin: 0 0 0.875rem 0;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.check-grid {
    display: grid;
    gap: 0.75rem;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.check-item:hover {
    background: rgba(255,255,255,0.05);
}

.check-item input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: transparent;
    transition: all 0.2s ease;
}

.check-item input[type="checkbox"]:checked + .checkmark {
    background: linear-gradient(135deg, #10b981, #059669);
    border-color: #10b981;
    color: white;
}

.check-item span:last-child {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Confidence Booster */
.confidence-booster {
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.confidence-message {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.confidence-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.confidence-message strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.confidence-message p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Start Ready Section */
.start-ready {
    text-align: center;
    margin-top: 2rem;
}

.start-ready .btn {
    margin-bottom: 0.5rem;
}

.btn-icon {
    margin-right: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Onboarding Tips */
.onboarding-tip {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    max-width: 300px;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    animation: slideInRight 0.3s ease-out;
}

.tip-info {
    background: rgba(59, 130, 246, 0.9);
    border: 1px solid rgba(59, 130, 246, 0.5);
}

.tip-success {
    background: rgba(16, 185, 129, 0.9);
    border: 1px solid rgba(16, 185, 129, 0.5);
}

.tip-warning {
    background: rgba(245, 158, 11, 0.9);
    border: 1px solid rgba(245, 158, 11, 0.5);
}

.tip-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    color: white;
}

.tip-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.tip-message {
    flex: 1;
    font-size: 0.9rem;
}

.tip-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s ease;
}

.tip-close:hover {
    background: rgba(255,255,255,0.2);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design for Onboarding */
@media (max-width: 768px) {
    .onboarding-assistant {
        padding: 1rem;
        margin: 1rem 0;
        max-height: 500px;
    }
    
    .onboarding-assistant.collapsed {
        max-height: 70px;
    }
    
    .assistant-header {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .assistant-header h3 {
        font-size: 1.1rem;
    }
    
    .step-navigation {
        flex-wrap: wrap;
        gap: 0.375rem;
    }
    
    .step-btn {
        flex: 1;
        min-width: calc(50% - 0.1875rem);
        text-align: center;
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .step-content {
        min-height: 200px;
        max-height: 300px;
    }
    
    .info-grid, .setup-checklist {
        gap: 0.5rem;
    }
    
    .info-item, .checklist-item {
        padding: 0.75rem;
        gap: 0.5rem;
    }
    
    .info-icon, .check-icon, .confidence-icon {
        font-size: 1.1rem;
    }
    
    .faq-question {
        padding: 0.75rem;
        font-size: 0.85rem;
    }
    
    .faq-answer {
        padding: 0 0.75rem 0.75rem 0.75rem;
    }
    
    .readiness-check, .confidence-booster {
        padding: 1rem;
    }
    
    .check-grid {
        gap: 0.5rem;
    }
    
    .profile-actions {
        flex-direction: column;
    }
    
    .profile-actions .btn {
        min-width: auto;
    }
    
    .onboarding-tip {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
}

/* Enhanced Testing Interface Styles */
.test-guidance {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    flex-shrink: 0;
}

.guidance-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.guidance-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.guidance-text {
    flex: 1;
}

.guidance-title {
    margin: 0 0 0.125rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.guidance-message {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Progress Section */
.progress-section {
    margin-bottom: 1.5rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.progress-text {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.progress-percentage {
    font-weight: 700;
    color: var(--accent);
    font-size: 1rem;
    font-family: 'Courier New', monospace;
}

.progress-container {
    position: relative;
}

.progress-phases {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.phase-marker {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.phase-marker.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}

.phase-marker.current {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent);
    font-weight: 600;
}

/* Test Context */
.test-context {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.context-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    min-width: 80px;
}

.context-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.context-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

/* Phase Instructions */
.phase-instructions {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    flex-shrink: 0;
    text-align: center;
}

.instruction-title {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.instruction-text {
    margin: 0 0 0.75rem 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.instruction-tips {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tip-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.tip-icon {
    flex-shrink: 0;
}

/* Enhanced Response Frame */
.response-frame {
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.tone-indicator {
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.tone-indicator.playing {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.02); opacity: 0.8; }
}

.indicator-icon {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.response-status {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.response-prompt {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Enhanced Response Buttons */
.response-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn.large {
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border-radius: 12px;
    min-width: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    transition: all 0.2s ease;
}

.btn-icon {
    font-size: 1.2rem;
}

.btn-text {
    font-weight: 700;
    font-size: 1rem;
}

.btn-subtitle {
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 400;
}

.btn.large:disabled {
    opacity: 0.4;
    transform: none !important;
    cursor: not-allowed;
}

.btn.large.btn-ready {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.btn.large.btn-ready:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* Enhanced Ear Status */
.ear-status {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    min-height: 1rem;
    font-weight: 500;
}

.ear-card.ear-testing {
    border-color: rgba(59, 130, 246, 0.4);
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.1), rgba(59, 130, 246, 0.05));
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.ear-card.ear-complete {
    border-color: rgba(16, 185, 129, 0.4);
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
}

/* Help Panel */
.help-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9));
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
}

.help-content h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    text-align: center;
}

.help-sections {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.help-section h5 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.help-section ul {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.help-section li {
    margin-bottom: 0.25rem;
}

/* Test Controls */
.test-controls {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 0.5rem;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Responsive Design for Enhanced Testing */
@media (max-width: 768px) {
    #testing-screen .panel-inner {
        padding: 8px 12px;
        gap: 6px;
        height: calc(100vh - 16px);
    }
    
    .test-guidance {
        padding: 0.5rem 0.75rem;
        margin-bottom: 0.25rem;
    }
    
    .guidance-title {
        font-size: 0.9rem;
    }
    
    .guidance-message {
        font-size: 0.8rem;
    }
    
    .test-context {
        gap: 0.75rem;
        flex-direction: row;
        padding: 0.375rem;
        margin-bottom: 0.25rem;
    }
    
    .context-item {
        flex-direction: column;
        gap: 0.125rem;
        min-width: auto;
        flex: 1;
    }
    
    .context-label {
        font-size: 0.65rem;
    }
    
    .context-value {
        font-size: 0.75rem;
    }
    
    .ears-wrap {
        flex-direction: column;
        gap: 0.75rem;
        height: auto;
    }
    
    .center-response {
        order: -1;
        padding: 0;
        gap: 4px;
    }
    
    .response-frame {
        width: 100%;
        max-width: 280px;
        padding: 8px;
    }
    
    .ear-card {
        width: 80px;
        height: 80px;
    }
    
    .ear-visual {
        font-size: 24px;
    }
    
    .ear-caption {
        font-size: 0.75rem;
    }
    
    .phase-instructions {
        padding: 0.5rem;
        margin-bottom: 0.25rem;
    }
    
    .response-buttons {
        flex-direction: row;
        gap: 8px;
    }
    
    .btn.large {
        width: auto;
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .test-controls {
        flex-direction: row;
        justify-content: center;
        gap: 0.5rem;
        margin-top: 0.25rem;
    }
    
    .help-panel {
        padding: 1rem;
        width: 95%;
    }
    
    .phase-marker {
        font-size: 0.65rem;
        padding: 0.15rem 0.25rem;
    }
}

/* Enhanced Testing Interface Styles */

/* Test Guidance Header */
.test-guidance {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.guidance-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.guidance-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.guidance-text {
    flex: 1;
}

.guidance-title {
    margin: 0 0 0.25rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.guidance-message {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Progress Section */
.progress-section {
    margin-bottom: 1.5rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.progress-percentage {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.progress-container {
    position: relative;
}

.progress-phases {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.phase-marker {
    position: relative;
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.phase-marker.active {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

/* Test Context Information */
.test-context {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    font-size: 0.85rem;
}

.context-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.context-label {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.context-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Phase Instructions */
.phase-instructions {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.instruction-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.instruction-text {
    margin: 0 0 1rem 0;
    color: var(--text-secondary);
    line-height: 1.5;
}

.instruction-tips {
    display: flex;
    justify-content: center;
}

.tip-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(var(--primary-rgb), 0.1);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tip-icon {
    font-size: 1rem;
}

/* Tone Indicator */
.tone-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.indicator-icon {
    font-size: 2rem;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.tone-indicator.playing .indicator-icon {
    opacity: 1;
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px rgba(var(--primary-rgb), 0.5));
}

.response-status {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Enhanced Response Buttons */
.response-prompt {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.btn.large {
    padding: 1rem 2rem;
    font-size: 1rem;
    min-height: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    position: relative;
}

.btn-icon {
    font-size: 1.2rem;
    font-weight: bold;
}

.btn-text {
    font-weight: 600;
    font-size: 1rem;
}

.btn-subtitle {
    font-size: 0.75rem;
    opacity: 0.8;
    font-weight: 400;
}

/* Help Panel */
.help-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.95));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(59,47,47,0.2);
    border-radius: 12px;
    padding: 2rem;
    max-width: 500px;
    width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    color: var(--accent);
}

.help-panel.hidden {
    display: none;
}

.help-content h4 {
    margin: 0 0 1.5rem 0;
    color: var(--accent);
    text-align: center;
}

.help-sections {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.help-section h5 {
    margin: 0 0 0.75rem 0;
    color: var(--accent);
    font-size: 1rem;
}

.help-section ul {
    margin: 0;
    padding-left: 1.5rem;
    color: var(--muted);
    line-height: 1.6;
}

.help-section li {
    margin-bottom: 0.5rem;
}

.help-section strong {
    color: var(--text-primary);
}

/* Test Controls */
.test-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

/* Ear Status */
.ear-status {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    min-height: 1rem;
}

.ear-card.ear-active .ear-status {
    color: var(--primary-color);
    font-weight: 500;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Mobile Responsive Adjustments */
@media (max-width: 768px) {
    .test-context {
        flex-direction: column;
        gap: 1rem;
    }
    
    .context-item {
        flex-direction: row;
        justify-content: space-between;
        width: 100%;
    }
    
    .guidance-content {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .help-panel {
        padding: 1.5rem;
        width: 95vw;
    }
    
    .btn.large {
        min-height: 3.5rem;
        padding: 0.75rem 1.5rem;
    }
    
    .progress-header {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .test-guidance,
    .phase-instructions,
    .test-context {
        border: 2px solid var(--text-primary);
        background: rgba(0, 0, 0, 0.8);
    }
    
    .help-panel {
        border: 2px solid var(--text-primary);
        background: rgba(255, 255, 255, 0.98);
        color: var(--text-primary);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .indicator-icon,
    .phase-marker,
    .btn {
        transition: none;
    }
    
    .tone-indicator.playing .indicator-icon {
        transform: none;
    }
}
/* Team Members Section */
.team-section {
    text-align: center;
}

.team-title {
    margin: 0 0 0.75rem 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.team-members {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin: 0;
}

.team-member-link {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.team-member-link:hover,
.team-member-link:focus {
    background: rgba(var(--primary-rgb), 0.1);
    border-color: rgba(var(--primary-rgb), 0.3);
    color: var(--primary-color);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.15);
}

.team-member-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.team-member-link:active {
    transform: translateY(0);
}

/* Mobile responsive adjustments */
@media (max-width: 480px) {
    .team-members {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .team-member-link {
        width: 100%;
        max-width: 200px;
        text-align: center;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .team-member-link {
        border: 2px solid var(--text-secondary);
        background: rgba(0, 0, 0, 0.8);
    }
    
    .team-member-link:hover,
    .team-member-link:focus {
        border-color: var(--primary-color);
        background: rgba(var(--primary-rgb), 0.2);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .team-member-link {
        transition: none;
    }
    
    .team-member-link:hover {
        transform: none;
    }
}

/* === FEEDBACK SECTION === */
.feedback-section {
    margin-top: 2rem;
    animation: slideInUp 0.3s ease-out;
}

.feedback-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.feedback-header h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.feedback-form {
    max-width: 600px;
    margin: 0 auto;
}

.rating-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.rating-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rating-item label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.star-rating {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.star {
    font-size: 1.5rem;
    color: #ddd;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.1s ease;
    user-select: none;
}

.star:hover {
    transform: scale(1.1);
}

.star.active,
.star.hover {
    color: #ffd700;
}

.feedback-text {
    margin-bottom: 1rem;
}

.feedback-text label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.feedback-text textarea {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.feedback-text textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.feedback-text textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.feedback-error {
    color: #e74c3c;
    font-size: 12px;
    margin-top: 4px;
    padding: 6px 8px;
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.2);
    border-radius: 4px;
    display: block;
}

.feedback-error.hidden {
    display: none;
}

.char-count {
    text-align: right;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.feedback-privacy {
    margin-bottom: 1.5rem;
}

.privacy-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.2);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.privacy-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.feedback-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.feedback-success {
    text-align: center;
    padding: 2rem 1rem;
}

.success-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.success-icon {
    font-size: 2rem;
    color: var(--success-color);
    background: rgba(76, 175, 80, 0.1);
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(76, 175, 80, 0.2);
}

.success-message h4 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.1rem;
}

.success-message p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .rating-grid {
        gap: 1rem;
    }
    
    .star {
        font-size: 1.3rem;
    }
    
    .feedback-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .feedback-actions .btn {
        width: 100%;
    }
}

/* Animation for feedback section appearance */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Feedback form states */
.feedback-form.submitting {
    opacity: 0.6;
    pointer-events: none;
}

.feedback-form.submitted {
    display: none;
}

.feedback-success.show {
    display: block;
}