/* ==========================================================================
   FAUNA-VISION - Main Design System & Glassmorphic HUD Styles
   Cyber-Biological AAA Scientific Interface
   ========================================================================== */

:root {
    --bg-cosmic: #07090e;
    --bg-glass: rgba(13, 19, 32, 0.72);
    --bg-glass-heavy: rgba(9, 14, 24, 0.88);
    --bg-glass-card: rgba(20, 28, 48, 0.65);
    --border-glass: rgba(255, 255, 255, 0.12);
    --border-glass-active: rgba(0, 255, 204, 0.5);
    
    --neon-cyan: #00ffcc;
    --neon-cyan-glow: rgba(0, 255, 204, 0.35);
    --neon-blue: #00b4d8;
    --neon-amber: #ffaa00;
    --neon-coral: #ff3366;
    --neon-purple: #cc00ff;
    
    --text-main: #f0f6fc;
    --text-muted: #8b949e;
    --text-dim: #484f58;

    --font-mono: "SF Mono", "Fira Code", "Roboto Mono", Consolas, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-full: 9999px;

    --hud-gap: 16px;
    --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-cosmic);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 14px;
    user-select: none;
    -webkit-user-select: none;
}

/* --------------------------------------------------------------------------
   App Container & Viewport
   -------------------------------------------------------------------------- */
#app-viewport {
    position: relative;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    background: #000;
}

#gl-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 1;
}

/* Hidden video feed element used for WebGL texture updates */
#webcam-video {
    display: none;
}

/* --------------------------------------------------------------------------
   Split-Screen Comparator Overlay
   -------------------------------------------------------------------------- */
#split-divider-container {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 44px;
    margin-left: -22px;
    z-index: 10;
    cursor: ew-resize;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    touch-action: none;
}

.split-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: linear-gradient(180deg, rgba(0,255,204,0) 0%, #00ffcc 20%, #00ffcc 80%, rgba(0,255,204,0) 100%);
    box-shadow: 0 0 12px var(--neon-cyan);
    transform: translateX(-50%);
}

.split-handle {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 2px solid var(--neon-cyan);
    box-shadow: 0 0 20px var(--neon-cyan-glow), inset 0 0 8px rgba(0,255,204,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-cyan);
    cursor: ew-resize;
    transition: transform var(--transition-fast);
}

.split-handle:hover, .split-handle:active {
    transform: scale(1.15);
    box-shadow: 0 0 28px var(--neon-cyan);
}

.split-handle svg {
    width: 18px;
    height: 18px;
}

/* Split Labels on Viewport */
.split-indicator {
    position: absolute;
    top: 76px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: rgba(7, 10, 18, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-glass);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-muted);
    z-index: 15;
    pointer-events: auto;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.split-indicator:hover {
    background: rgba(13, 19, 32, 0.9);
    border-color: var(--neon-cyan);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--neon-cyan-glow);
}

.split-indicator.left {
    left: 20px;
}

.split-indicator.right {
    right: 20px;
    color: var(--neon-cyan);
    border-color: rgba(0,255,204,0.3);
}

/* --------------------------------------------------------------------------
   HUD Top Bar (Status, Telemetry, Quick Tools)
   -------------------------------------------------------------------------- */
#hud-header {
    position: absolute;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    pointer-events: none;
}

#hud-header > * {
    pointer-events: auto;
}

.hud-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.brand-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
}

.brand-icon {
    width: 26px;
    height: 26px;
    color: var(--neon-cyan);
    animation: aperturePulse 4s infinite ease-in-out;
}

@keyframes aperturePulse {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(90deg) scale(1.08); filter: drop-shadow(0 0 6px var(--neon-cyan)); }
}

.brand-title {
    font-weight: 800;
    font-size: 15px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    background: linear-gradient(90deg, #fff 0%, var(--neon-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #2ea043;
    box-shadow: 0 0 8px #2ea043;
    display: inline-block;
}

.status-dot.warning {
    background: var(--neon-amber);
    box-shadow: 0 0 8px var(--neon-amber);
}

/* Telemetry Mini Display */
.telemetry-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
}

.telemetry-val {
    color: var(--neon-cyan);
    font-weight: 600;
}

/* Action Button Cluster */
.hud-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.icon-btn:hover {
    background: var(--bg-glass-card);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--neon-cyan-glow);
}

.icon-btn:active {
    transform: translateY(0);
}

.icon-btn.active {
    background: var(--neon-cyan);
    color: #000;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 16px var(--neon-cyan);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

/* --------------------------------------------------------------------------
   Active Preset Scientific Card (Top Center / Left Overlay)
   -------------------------------------------------------------------------- */
#active-species-hud {
    position: absolute;
    top: 76px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 18;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    cursor: pointer;
    transition: all var(--transition-fast);
}

#active-species-hud:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 12px 36px var(--neon-cyan-glow);
}

.species-titles {
    display: flex;
    flex-direction: column;
}

.species-common {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #fff;
}

.species-scientific {
    font-size: 11px;
    font-style: italic;
    color: var(--neon-cyan);
    font-family: var(--font-mono);
}

.species-pill-badge {
    padding: 3px 9px;
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(0, 255, 204, 0.15);
    color: var(--neon-cyan);
    border: 1px solid rgba(0, 255, 204, 0.4);
}

/* --------------------------------------------------------------------------
   Bottom Control Area: Carousel & Shutter Action
   -------------------------------------------------------------------------- */
#hud-bottom-bar {
    position: absolute;
    bottom: 20px;
    left: 16px;
    right: 16px;
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    pointer-events: none;
}

#hud-bottom-bar > * {
    pointer-events: auto;
}

/* Carousel Outer Wrapper */
.carousel-wrapper {
    position: relative;
    width: 100%;
    max-width: 900px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 25;
    transition: all var(--transition-fast);
}

.carousel-nav-btn:hover {
    background: var(--neon-cyan);
    color: #000;
    border-color: var(--neon-cyan);
}

.carousel-nav-btn.prev { left: -10px; }
.carousel-nav-btn.next { right: -10px; }

/* Horizontal Carousel */
#animals-carousel {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 10px 14px;
    width: 100%;
    scrollbar-width: none; /* Firefox */
}

#animals-carousel::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

/* Individual Animal Card */
.animal-card {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 94px;
    height: 84px;
    padding: 8px 6px;
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
}

.animal-card:hover {
    background: var(--bg-glass-card);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-4px);
}

.animal-card.active {
    background: rgba(0, 255, 204, 0.12);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px var(--neon-cyan-glow), inset 0 0 12px rgba(0,255,204,0.15);
    transform: translateY(-6px) scale(1.04);
}

.animal-card-icon {
    width: 28px;
    height: 28px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.animal-card.active .animal-card-icon {
    color: var(--neon-cyan);
}

.animal-card-name {
    font-size: 11px;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    color: var(--text-main);
}

.animal-card.active .animal-card-name {
    color: var(--neon-cyan);
}

/* Primary Shutter Snapshot Action */
.shutter-bar {
    display: flex;
    align-items: center;
    gap: 16px;
}

.shutter-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--neon-cyan) 0%, #00b4d8 100%);
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 30px var(--neon-cyan-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: #000;
}

.shutter-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 45px var(--neon-cyan);
    border-color: #fff;
}

.shutter-btn:active {
    transform: scale(0.92);
}

.shutter-btn svg {
    width: 28px;
    height: 28px;
}

/* --------------------------------------------------------------------------
   Modals & Glassmorphic Drawers
   -------------------------------------------------------------------------- */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(4, 7, 14, 0.78);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-smooth);
}

.modal-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-dialog {
    background: var(--bg-glass-heavy);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 64px rgba(0,0,0,0.7), 0 0 30px rgba(0,255,204,0.1);
    width: 100%;
    max-width: 680px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 30px;
    position: relative;
    transform: translateY(20px) scale(0.97);
    transition: all var(--transition-smooth);
}

.modal-backdrop.open .modal-dialog {
    transform: translateY(0) scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: none;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close-btn:hover {
    background: var(--neon-coral);
    color: #fff;
}

/* Scientific Specs Grid inside Modal */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 14px;
    margin: 20px 0;
}

.spec-box {
    background: var(--bg-glass-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.spec-label {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}

.spec-val {
    font-size: 16px;
    font-weight: 700;
    color: var(--neon-cyan);
}

/* Snapshot Preview & Save Dialog */
.snapshot-preview-img {
    width: 100%;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    margin: 15px 0;
}

.btn-primary {
    background: var(--neon-cyan);
    color: #000;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.btn-primary:hover {
    background: #00d4ff;
    box-shadow: 0 0 20px var(--neon-cyan-glow);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: #fff;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.18);
}

/* Flash feedback animation for snapshot capture */
.screen-flash {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    opacity: 0;
    pointer-events: none;
    z-index: 999;
    transition: opacity 0.08s ease-out;
}

.screen-flash.active {
    opacity: 0.85;
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    #hud-header {
        top: 10px;
        left: 10px;
        right: 10px;
    }

    .brand-title {
        display: none;
    }

    .hud-pill {
        padding: 6px 12px;
    }

    #active-species-hud {
        top: 60px;
        padding: 6px 14px;
    }

    .species-common {
        font-size: 13px;
    }

    .species-scientific {
        font-size: 10px;
    }

    #hud-bottom-bar {
        bottom: 12px;
        left: 10px;
        right: 10px;
    }

    .animal-card {
        width: 80px;
        height: 72px;
    }

    .animal-card-icon {
        width: 22px;
        height: 22px;
    }

    .animal-card-name {
        font-size: 10px;
    }

    .shutter-btn {
        width: 54px;
        height: 54px;
    }

    .shutter-btn svg {
        width: 24px;
        height: 24px;
    }

    .modal-dialog {
        padding: 20px;
    }
}