@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500;600;700&display=swap');

:root {
    --bg-black: #000000;
    
    /* Ultra-Premium Frosted Glass Color Tokens */
    --frosted-bg: rgba(15, 20, 32, 0.68);
    --frosted-glass-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.26) 0%, rgba(255, 255, 255, 0.05) 100%);
    --frosted-card-bg: rgba(14, 18, 30, 0.72);
    --frosted-popover-bg: rgba(12, 16, 28, 0.90);
    
    --frosted-border: 1px solid rgba(255, 255, 255, 0.32);
    --frosted-border-highlight: 1px solid rgba(255, 255, 255, 0.45);
    --frosted-border-cyan: 1px solid rgba(0, 240, 255, 0.55);
    
    --frosted-shadow: 0 24px 50px rgba(0, 0, 0, 0.6), inset 0 1.5px 2px rgba(255, 255, 255, 0.45), inset 0 -1px 2px rgba(0, 0, 0, 0.3);
    --frosted-dock-shadow: 0 28px 64px rgba(0, 0, 0, 0.7), inset 0 1.5px 2.5px rgba(255, 255, 255, 0.55), inset 0 -1px 2px rgba(0, 0, 0, 0.35);

    --neon-cyan: #00f0ff;
    --neon-pink: #ff007f;
    --neon-green: #00ff88;
    --neon-amber: #ffaa00;

    --text-primary: #ffffff;
    --text-secondary: #c5d2e6;
    --text-muted: #7888a2;

    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 9999px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
}

html, body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background-color: var(--bg-black);
    font-family: var(--font-main);
    color: var(--text-primary);
}

/* ==========================================================================
   1. Fullscreen Viewport & Canvas
   ========================================================================== */
.fullscreen-viewport {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    background: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
}

#webcam-video {
    display: none;
}

#render-canvas {
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    transform: scaleX(-1); /* Mirrored camera feed */
}

/* ==========================================================================
   2. Welcome & Introduction Screen (Minimalist Frosted Glass Aesthetic)
   ========================================================================== */
.welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at 50% 30%, #0d1222 0%, #000000 100%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 28px 44px;
    overflow-y: auto;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.5s ease;
}

.welcome-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Top Navigation Bar */
.welcome-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.top-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-cyan);
    filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.6));
}

.brand-title-text {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.2px;
    color: var(--text-primary);
}

.top-links {
    display: flex;
    align-items: center;
}

.top-social-icon {
    color: var(--text-secondary);
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    padding: 10px;
    border-radius: 50%;
    background: var(--frosted-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(32px) saturate(200%);
    -webkit-backdrop-filter: blur(32px) saturate(200%);
    border: var(--frosted-border);
    box-shadow: inset 0 1px 1.5px rgba(255, 255, 255, 0.4), 0 8px 24px rgba(0, 0, 0, 0.4);
}

.top-social-icon:hover {
    color: #ffffff;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.55), inset 0 1px 2px rgba(255, 255, 255, 0.6);
    transform: scale(1.1);
}

/* Center Content Guide */
.welcome-content {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    flex: 1;
    padding: 16px 0;
}

.welcome-guide-box {
    max-width: 820px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 18px;
    text-align: left;
}

.guide-header-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 16px;
    background: rgba(0, 240, 255, 0.12);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-cyan);
    border-radius: var(--radius-pill);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--neon-cyan);
    letter-spacing: 1px;
    width: fit-content;
    box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
}

.pulse-beacon {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--neon-cyan);
    box-shadow: 0 0 8px var(--neon-cyan);
    animation: pulse 1.5s infinite alternate;
}

.guide-title {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    line-height: 1.15;
}

.guide-intro {
    font-size: 0.98rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 700px;
}

/* Visual Gesture Cards Grid */
.gesture-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 4px;
}

.gesture-visual-card {
    background: var(--frosted-card-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(36px) saturate(200%);
    -webkit-backdrop-filter: blur(36px) saturate(200%);
    border: var(--frosted-border);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--frosted-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.gesture-visual-card:hover {
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 28px 56px rgba(0, 0, 0, 0.65), inset 0 1.5px 2px rgba(255, 255, 255, 0.6);
}

.gesture-visual-card.highlight-card {
    border: var(--frosted-border-cyan);
    box-shadow: 0 8px 36px rgba(0, 240, 255, 0.2), inset 0 1.5px 2px rgba(255, 255, 255, 0.5);
}

.card-visual-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gesture-sticker {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.3);
}

.sticker-emoji {
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.step-pill {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--neon-cyan);
    background: rgba(0, 240, 255, 0.16);
    padding: 3px 8px;
    border-radius: 4px;
}

.card-title {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-desc {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-desc strong {
    color: #ffffff;
}

/* Filter Summary Row */
.filters-summary-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 2px;
}

.filter-row-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--neon-cyan);
    letter-spacing: 1px;
}

.filters-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filters-tag-cloud span {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    padding: 6px 14px;
    background: var(--frosted-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: var(--frosted-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    box-shadow: inset 0 1px 1.5px rgba(255, 255, 255, 0.3);
}

/* Camera Permission Error Banner */
.camera-error-banner {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 22px;
    background: linear-gradient(135deg, rgba(255, 70, 70, 0.22) 0%, rgba(20, 10, 14, 0.9) 100%);
    backdrop-filter: blur(32px) saturate(200%);
    -webkit-backdrop-filter: blur(32px) saturate(200%);
    border: 1px solid rgba(255, 90, 90, 0.5);
    border-radius: var(--radius-md);
    box-shadow: 0 16px 40px rgba(255, 0, 0, 0.25), inset 0 1.5px 2px rgba(255, 255, 255, 0.3);
    margin-top: 6px;
    transition: all 0.3s ease;
}

.camera-error-banner.hidden {
    display: none;
}

.error-icon-box {
    font-size: 1.8rem;
    line-height: 1;
}

.error-content-box {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.error-title {
    font-size: 1rem;
    font-weight: 700;
    color: #ff6b6b;
    letter-spacing: -0.2px;
}

.error-desc {
    font-size: 0.85rem;
    color: #f0f4fc;
    line-height: 1.5;
}

.retry-camera-btn {
    align-self: flex-start;
    margin-top: 8px;
    padding: 9px 22px;
    background: rgba(255, 90, 90, 0.3);
    border: 1px solid rgba(255, 90, 90, 0.7);
    color: #ffffff;
    border-radius: var(--radius-pill);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 0 16px rgba(255, 82, 82, 0.35);
}

.retry-camera-btn:hover {
    background: #ff4757;
    box-shadow: 0 0 24px rgba(255, 71, 87, 0.7);
    transform: scale(1.04);
}

.privacy-note {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Center CTA Launch Button */
.cta-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
}

.cta-launch-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 15px 56px;
    background: #ffffff;
    color: #000000;
    font-family: var(--font-mono);
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 1px;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 35px rgba(255, 255, 255, 0.35);
}

.cta-launch-btn:hover {
    background: var(--neon-cyan);
    box-shadow: 0 0 45px rgba(0, 240, 255, 0.75);
    transform: scale(1.04);
}

.cta-launch-btn:disabled {
    opacity: 0.75;
    cursor: wait;
    transform: none;
}

.cta-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-top: 2px solid #000000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.cta-spinner.hidden {
    display: none;
}

.cta-status-msg {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Bottom Footer */
.welcome-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-top: 8px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
}

.footer-right {
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: 1px;
}

/* ==========================================================================
   3. In-Experience UI (Ultra-Crisp Frosted Glass Dock)
   ========================================================================== */
.ui-overlay-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 10;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s ease;
}

.ui-overlay-layer.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.98);
}

/* Vertical Frosted Glass Island Dock (Right Side) */
.liquid-dock {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px 9px;
    background: var(--frosted-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(40px) saturate(220%) contrast(105%);
    -webkit-backdrop-filter: blur(40px) saturate(220%) contrast(105%);
    border: var(--frosted-border);
    border-radius: 38px;
    box-shadow: var(--frosted-dock-shadow);
    pointer-events: auto;
    z-index: 20;
}

.glass-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: transparent;
    border: none;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.glass-btn .btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    transition: transform 0.2s ease, color 0.2s ease;
}

.glass-btn .btn-icon svg {
    stroke: currentColor;
}

.glass-btn:hover {
    background: rgba(255, 255, 255, 0.22);
    box-shadow: inset 0 1.5px 2px rgba(255, 255, 255, 0.6), 0 4px 16px rgba(0, 0, 0, 0.4);
    color: #ffffff;
    transform: scale(1.1);
}

.glass-btn:hover .btn-icon {
    transform: scale(1.12);
}

.glass-btn.active {
    background: rgba(0, 240, 255, 0.24);
    border: 1px solid var(--neon-cyan);
    box-shadow: inset 0 1.5px 2px rgba(255, 255, 255, 0.6), 0 0 20px rgba(0, 240, 255, 0.5);
    color: var(--neon-cyan);
}

.glass-btn.active .btn-icon {
    color: var(--neon-cyan);
}

.glass-btn.snap-btn:hover {
    box-shadow: inset 0 1.5px 2px rgba(255, 255, 255, 0.7), 0 0 24px rgba(255, 0, 127, 0.6);
    color: var(--neon-pink);
}

.glass-btn.hide-ui-btn:hover {
    color: var(--neon-pink);
}

.dock-divider {
    width: 24px;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 2px 0;
}

/* Frosted Glass Filter Popover */
.filter-dropdown-wrapper {
    position: relative;
}

.liquid-glass-menu {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%) scale(0.92);
    width: 270px;
    background: var(--frosted-popover-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(40px) saturate(220%);
    -webkit-backdrop-filter: blur(40px) saturate(220%);
    border: var(--frosted-border-highlight);
    border-radius: var(--radius-md);
    box-shadow: var(--frosted-dock-shadow), 0 0 35px rgba(0, 240, 255, 0.2);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 30;
}

.liquid-glass-menu.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(-50%) scale(1);
}

.dropdown-header {
    font-size: 0.74rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--neon-cyan);
    letter-spacing: 1px;
    padding: 4px 8px 6px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.filter-options-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 320px;
    overflow-y: auto;
}

.filter-option-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.84rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.filter-option-item:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.filter-option-item.active {
    background: linear-gradient(90deg, rgba(0, 240, 255, 0.25), rgba(255, 0, 127, 0.25));
    border-color: var(--neon-cyan);
    color: #ffffff;
    font-weight: 700;
    box-shadow: inset 0 1px 1.5px rgba(255, 255, 255, 0.4);
}

.filter-option-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--neon-cyan);
    background: rgba(0, 240, 255, 0.16);
    padding: 2px 6px;
    border-radius: 4px;
}

/* ==========================================================================
   4. Bottom-Left Frosted Glass Gesture Card
   ========================================================================== */
.liquid-glass-card {
    position: fixed;
    bottom: 28px;
    left: 28px;
    width: 320px;
    background: var(--frosted-card-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(36px) saturate(220%);
    -webkit-backdrop-filter: blur(36px) saturate(220%);
    border: var(--frosted-border);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    box-shadow: var(--frosted-shadow);
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: auto;
    z-index: 15;
    overflow: hidden;
}

.card-glass-highlight {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

.help-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-bottom: 10px;
}

.active-filter-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
}

.filter-badge {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--neon-cyan);
    background: rgba(0, 240, 255, 0.18);
    padding: 3px 7px;
    border-radius: 4px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
    transition: all 0.3s ease;
}

.status-indicator.active-portal .status-dot {
    background-color: var(--neon-cyan);
    box-shadow: 0 0 10px var(--neon-cyan);
}

.status-indicator.active-tracking .status-dot {
    background-color: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
}

.gesture-instruction-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.gesture-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.gesture-item strong {
    color: #ffffff;
}

.gesture-icon {
    font-size: 1.15rem;
    line-height: 1;
}

/* Proximity Progress Meter */
.proximity-container {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding-top: 4px;
}

.proximity-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-secondary);
}

.proximity-track {
    width: 100%;
    height: 7px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-pill);
    overflow: hidden;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.4);
}

.proximity-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
    border-radius: var(--radius-pill);
    transition: width 0.1s linear;
    box-shadow: 0 0 12px var(--neon-pink);
}

.proximity-fill.triggered {
    background: #ffffff;
    box-shadow: 0 0 20px #ffffff;
}

.card-footer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 8px;
}

.keyboard-shortcuts-hint {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

/* ==========================================================================
   5. Frosted Glass Eye Restore Button (Only eye symbol + frosted glass)
   ========================================================================== */
.liquid-glass-eye-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: var(--frosted-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(40px) saturate(220%);
    -webkit-backdrop-filter: blur(40px) saturate(220%);
    border: var(--frosted-border-highlight);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    box-shadow: var(--frosted-dock-shadow);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.liquid-glass-eye-btn svg {
    stroke: currentColor;
    transition: transform 0.25s ease;
}

.liquid-glass-eye-btn:hover {
    background: rgba(255, 255, 255, 0.26);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.6), inset 0 1.5px 2px rgba(255, 255, 255, 0.7);
    transform: scale(1.12);
}

.liquid-glass-eye-btn:hover svg {
    transform: scale(1.15);
}

body.ui-is-hidden .liquid-glass-eye-btn {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    animation: gentleAura 3s infinite alternate;
}

@keyframes gentleAura {
    from { box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), inset 0 1.5px 2px rgba(255, 255, 255, 0.4); }
    to { box-shadow: 0 10px 40px rgba(0, 240, 255, 0.35), inset 0 1.5px 2px rgba(255, 255, 255, 0.6); }
}

/* ==========================================================================
   6. Settings Modal (Frosted Glass)
   ========================================================================== */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s ease;
}

.modal-backdrop.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.modal-dialog {
    width: 90%;
    max-width: 440px;
    background: var(--frosted-popover-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(40px) saturate(220%);
    -webkit-backdrop-filter: blur(40px) saturate(220%);
    border: var(--frosted-border-highlight);
    border-radius: var(--radius-lg);
    padding: 26px;
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.85), inset 0 1.5px 2px rgba(255, 255, 255, 0.4);
    display: flex;
    flex-direction: column;
    gap: 16px;
    pointer-events: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    pointer-events: auto;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--neon-pink);
}

.setting-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-label-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.style-segmented-picker {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    background: rgba(0, 0, 0, 0.5);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.15);
    pointer-events: auto;
}

.segment-btn {
    padding: 10px 4px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    white-space: nowrap;
    pointer-events: auto;
    user-select: none;
}

.segment-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
}

.segment-btn.active {
    background: rgba(0, 240, 255, 0.25);
    border: 1px solid var(--neon-cyan);
    color: #ffffff;
    box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), inset 0 1.5px 2px rgba(255, 255, 255, 0.45);
    font-weight: 700;
}

.setting-row-inline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.toggle-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--neon-cyan);
    cursor: pointer;
}

.modal-separator {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.14);
    margin: 4px 0;
}

.slider-input {
    width: 100%;
    accent-color: var(--neon-cyan);
}

.camera-dropdown {
    background: rgba(15, 20, 32, 0.95);
    color: #fff;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-family: var(--font-main);
    font-size: 0.88rem;
}

.reset-settings-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 11px 16px;
    background: rgba(255, 80, 80, 0.12);
    border: 1px solid rgba(255, 80, 80, 0.35);
    border-radius: var(--radius-sm);
    color: #ff8888;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.reset-settings-btn:hover {
    background: rgba(255, 80, 80, 0.28);
    border-color: #ff5555;
    color: #ffffff;
    box-shadow: 0 0 20px rgba(255, 85, 85, 0.4);
    transform: translateY(-1px);
}

.reset-settings-btn svg {
    stroke: currentColor;
}

/* Snapshot Screen Flash */
.screen-flash {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #ffffff;
    opacity: 0;
    pointer-events: none;
    z-index: 300;
    transition: opacity 0.15s ease-out;
}

.screen-flash.flash {
    opacity: 0.85;
    transition: none;
}

/* Toast Notification */
.toast-notification {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--frosted-bg);
    background-image: var(--frosted-glass-gradient);
    backdrop-filter: blur(32px) saturate(200%);
    -webkit-backdrop-filter: blur(32px) saturate(200%);
    border: var(--frosted-border-highlight);
    border-radius: var(--radius-pill);
    padding: 9px 24px;
    font-size: 0.88rem;
    font-family: var(--font-mono);
    color: #ffffff;
    box-shadow: var(--frosted-dock-shadow);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 250;
}

.toast-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

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

@keyframes pulse {
    from { opacity: 0.5; }
    to { opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 860px) {
    .gesture-cards-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .welcome-screen {
        padding: 20px;
    }
    .guide-title {
        font-size: 1.6rem;
    }
    .liquid-dock {
        right: 14px;
        padding: 8px 6px;
    }
    .glass-btn {
        width: 40px;
        height: 40px;
    }
    .liquid-glass-card {
        left: 14px;
        bottom: 14px;
        width: calc(100vw - 28px);
        max-width: 320px;
    }
    .liquid-glass-eye-btn {
        right: 14px;
        bottom: 14px;
        width: 48px;
        height: 48px;
    }
}