/* ========== GLOBAL VARIABLES & RESET ========== */
:root {
    --bg-dark: #05070a;
    --glass-bg: rgba(12, 18, 28, 0.75);
    --glass-border: rgba(88, 166, 255, 0.25);
    --accent: #3b82f6;
    --accent-glow: #00a6ff;
    --fake: #ff3366;
    --real: #00e676;
    --uncertain: #ffb74d;
    --text-primary: #f0f3fa;
    --text-muted: #94a3b8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* ========== THREE.JS BACKGROUND ========== */
#three-canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.glow-ambient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 40%, rgba(59,130,246,0.12), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ========== MAIN LAYOUT ========== */
.app-container {
    position: relative;
    z-index: 10;
    display: flex;
    gap: 28px;
    padding: 28px 32px;
    max-width: 1600px;
    margin: 0 auto;
}

/* ========== SETTINGS SIDEBAR ========== */
.settings-panel {
    width: 280px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border-radius: 32px;
    border: 1px solid var(--glass-border);
    padding: 24px 20px;
    position: sticky;
    top: 28px;
    height: fit-content;
    transition: all 0.3s ease;
    box-shadow: 0 20px 35px -10px rgba(0,0,0,0.4);
}

.settings-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.icon-3d {
    font-size: 28px;
    filter: drop-shadow(0 0 4px var(--accent));
}

.settings-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.badge-hologram {
    margin-left: auto;
    background: rgba(59,130,246,0.2);
    padding: 4px 10px;
    border-radius: 40px;
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--accent);
    border: 1px solid rgba(59,130,246,0.4);
}

.setting-group {
    margin-bottom: 28px;
}

.setting-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--text-muted);
}

.tooltip {
    cursor: help;
    font-size: 0.7rem;
    background: rgba(255,255,255,0.1);
    padding: 0 6px;
    border-radius: 30px;
}

/* Toggle switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 56px;
    height: 28px;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #1e2a3a;
    border-radius: 34px;
    transition: 0.3s;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: var(--accent);
    border-radius: 50%;
    transition: 0.3s;
    box-shadow: 0 0 6px var(--accent);
}

input:checked + .toggle-slider {
    background: rgba(59,130,246,0.6);
}

input:checked + .toggle-slider:before {
    transform: translateX(28px);
}

/* Sliders */
.slider-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: #1e2a3a;
    border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 8px var(--accent);
}

.slider-value {
    background: #0f1622;
    padding: 2px 8px;
    border-radius: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
}

/* Model dropdown (glass style) */
.model-select {
    width: 100%;
    background: rgba(15, 22, 34, 0.85);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 10px 12px;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(4px);
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2388aaff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.model-select:hover {
    border-color: var(--accent);
    background-color: rgba(59, 130, 246, 0.1);
}

.model-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

.model-select option {
    background: #0f1622;
    color: var(--text-primary);
}

/* Model stats */
.model-stats {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.stat-line {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    margin-bottom: 12px;
    color: var(--text-muted);
}

.stat-line span:last-child {
    font-family: monospace;
    color: var(--text-primary);
}

/* ========== MAIN DASHBOARD ========== */
.main-dashboard {
    flex: 1;
    min-width: 0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-3d-icon {
    font-size: 3rem;
    filter: drop-shadow(0 0 8px var(--accent));
}

.logo-text h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.ai-glow {
    background: linear-gradient(135deg, #58a6ff, #a855f7);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.hologram-badge {
    background: rgba(59,130,246,0.15);
    padding: 8px 18px;
    border-radius: 60px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1px;
    border: 1px solid rgba(59,130,246,0.3);
    backdrop-filter: blur(4px);
}

/* ========== 3-PANEL GRID ========== */
.panels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* Premium Cards */
.premium-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-radius: 32px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s cubic-bezier(0.2,0.9,0.4,1.1);
    position: relative;
    overflow: hidden;
}

.premium-card:hover {
    transform: translateY(-4px);
    border-color: rgba(88,166,255,0.5);
    box-shadow: 0 20px 35px -12px black;
}

.card-shine {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    opacity: 0;
    transition: 0.4s;
    pointer-events: none;
}

.premium-card:hover .card-shine {
    opacity: 0.4;
}

.card-header {
    padding: 20px 24px 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.card-icon {
    font-size: 26px;
}

.card-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.card-status {
    margin-left: auto;
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 0.65rem;
    font-weight: 600;
}

.led-green {
    background: rgba(0,230,118,0.2);
    color: #00e676;
}

.led-blue {
    background: rgba(59,130,246,0.2);
    color: #3b82f6;
}

.card-body {
    padding: 20px 24px 28px;
}

/* Upload zones */
.upload-zone {
    border: 2px dashed rgba(88,166,255,0.4);
    border-radius: 24px;
    padding: 28px 16px;
    text-align: center;
    cursor: pointer;
    transition: 0.2s;
}

.upload-zone:hover {
    border-color: var(--accent);
    background: rgba(59,130,246,0.05);
}

.upload-icon {
    font-size: 44px;
    margin-bottom: 10px;
}

.upload-hint {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Preview row */
.preview-row {
    display: flex;
    gap: 16px;
    margin: 16px 0;
}

.preview-box {
    flex: 1;
    background: rgba(0,0,0,0.4);
    border-radius: 20px;
    padding: 8px;
    text-align: center;
}

.preview-img {
    width: 100%;
    max-height: 120px;
    object-fit: cover;
    border-radius: 12px;
}

/* Verdict card */
.verdict-card {
    text-align: center;
    padding: 12px;
    background: rgba(0,0,0,0.3);
    border-radius: 28px;
    margin: 16px 0;
}

.verdict-label {
    font-size: 2rem;
    font-weight: 800;
}

.verdict-label.fake {
    color: var(--fake);
    text-shadow: 0 0 8px #ff3366;
}

.verdict-label.real {
    color: var(--real);
    text-shadow: 0 0 8px #00e676;
}

.verdict-label.uncertain {
    color: var(--uncertain);
}

/* Gauge */
.gauge-3d {
    display: flex;
    align-items: center;
    justify-content: space-around;
    margin: 20px 0;
}

.gauge-stats {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.gauge-stats div {
    background: rgba(0,0,0,0.5);
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 0.8rem;
}

/* Explanation box */
.explanation-box {
    background: rgba(0,0,0,0.4);
    border-left: 3px solid var(--accent);
    border-radius: 16px;
    padding: 14px;
    font-size: 0.8rem;
    line-height: 1.4;
}

/* Webcam */
.webcam-wrapper {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    aspect-ratio: 16/9;
    background: #000;
}

#webcam-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scan-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent);
    border-radius: 24px;
    opacity: 0;
    transition: 0.2s;
    pointer-events: none;
}

.scan-ring.active {
    opacity: 1;
    animation: pulseRing 0.4s ease-out;
}

@keyframes pulseRing {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.05);
        opacity: 0;
    }
}

.webcam-controls {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border: none;
    padding: 8px 24px;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    color: white;
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 8px 24px;
    border-radius: 40px;
    cursor: pointer;
    color: white;
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Video stats & chart */
.video-stats {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.stat-badge {
    background: #0f1622;
    padding: 4px 16px;
    border-radius: 40px;
    font-size: 0.75rem;
}

.chart-container {
    background: rgba(0,0,0,0.3);
    border-radius: 20px;
    padding: 12px;
    margin: 20px 0;
}

/* Loader overlay */
.loader-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5,7,10,0.88);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    opacity: 0;
    visibility: hidden;
    transition: 0.2s;
    z-index: 20;
}

.loader-overlay.active {
    opacity: 1;
    visibility: visible;
}

.scanner-line {
    width: 60px;
    height: 2px;
    background: var(--accent);
    animation: scanMove 1s infinite;
}

@keyframes scanMove {
    0% {
        width: 0;
        opacity: 0.5;
    }
    50% {
        width: 100px;
        opacity: 1;
    }
    100% {
        width: 0;
        opacity: 0.5;
    }
}

/* Footer */
.dashboard-footer {
    text-align: center;
    padding: 24px;
    margin-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.05);
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .panels-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .settings-panel {
        width: 260px;
    }
    .app-container {
        padding: 20px 24px;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        padding: 16px;
        gap: 16px;
    }
    .settings-panel {
        width: 100%;
        position: static;
        order: -1;
        padding: 16px;
    }
    .panels-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .preview-row {
        flex-direction: column;
        gap: 12px;
    }
    canvas[id$="gauge"] {
        width: 120px !important;
        height: 120px !important;
    }
    .gauge-3d {
        gap: 16px;
    }
    .webcam-controls {
        flex-direction: column;
    }
    .btn-primary, .btn-secondary {
        width: 100%;
        padding: 12px;
    }
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .logo-text h1 {
        font-size: 1.4rem;
    }
    .verdict-label {
        font-size: 1.6rem;
    }
    .model-select {
        font-size: 0.8rem;
        padding: 8px 10px;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .card-header h2 {
        font-size: 1rem;
    }
    .card-status {
        font-size: 0.55rem;
        padding: 3px 8px;
    }
    .stat-badge {
        font-size: 0.65rem;
    }
    .explanation-box {
        font-size: 0.7rem;
    }
}
/* Social links in footer */
.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 16px;
}

.social-links a {
    color: var(--text-muted);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(4px);
}

.social-links a:hover {
    color: var(--accent);
    transform: translateY(-2px);
    background: rgba(88,166,255,0.15);
}

.social-links svg {
    width: 18px;
    height: 18px;
}