:root {
    --bg-primary:        #0a0e1a;
    --bg-secondary:      #111827;
    --bg-tertiary:       #1e293b;
    --bg-glass:          rgba(17, 24, 39, 0.7);

    --accent-primary:    #3b82f6;
    --accent-success:    #10b981;
    --accent-warning:    #f59e0b;
    --accent-danger:     #ef4444;
    --accent-purple:     #8b5cf6;
    --accent-cyan:       #06b6d4;

    --text-primary:      #f1f5f9;
    --text-secondary:    #cbd5e1;
    --text-muted:        #94a3b8;

    --border-default:    rgba(255,255,255,0.06);
    --border-active:     rgba(59,130,246,0.5);

    --glow-blue:         0 0 20px rgba(59,130,246,0.3);
    --glow-red:          0 0 20px rgba(239,68,68,0.3);
    --glow-green:        0 0 20px rgba(16,185,129,0.3);

    --font-primary:      'Inter', sans-serif;
    --font-mono:         'JetBrains Mono', monospace;
}

body.light-mode {
    --bg-primary:        #f8fafc;
    --bg-secondary:      #ffffff;
    --bg-tertiary:       #f1f5f9;
    --bg-glass:          rgba(255, 255, 255, 0.8);

    --text-primary:      #0f172a;
    --text-secondary:    #475569;
    --text-muted:        #64748b;

    --border-default:    rgba(0, 0, 0, 0.1);
    --border-active:     rgba(59, 130, 246, 0.5);
    
    --glow-blue:         0 4px 15px rgba(59,130,246,0.15);
    --glow-red:          0 4px 15px rgba(239,68,68,0.15);
    --glow-green:        0 4px 15px rgba(16,185,129,0.15);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-primary);
}

/* Landing Page Styles */
.landing-body { background: radial-gradient(circle at top, var(--bg-tertiary), var(--bg-primary)); min-height: 100vh; }
.landing-nav { display: flex; justify-content: space-between; padding: 20px 40px; background: rgba(10, 14, 26, 0.8); backdrop-filter: blur(10px); position: fixed; width: 100%; top: 0; z-index: 100; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--accent-primary); font-weight: bold; font-size: 20px; white-space: nowrap; }
.logo h2 { margin: 0; font-size: inherit; font-weight: inherit; white-space: nowrap; display: inline-block; }
.nav-links-landing { display: flex; gap: 20px; align-items: center; }
.nav-links-landing a { color: var(--text-primary); text-decoration: none; font-weight: 500; }
.btn-primary { background: var(--accent-primary); color: #fff; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: 600; border: none; cursor: pointer; transition: 0.3s; box-shadow: var(--glow-blue); display: inline-flex; align-items: center; justify-content: center; gap: 8px;}
.btn-primary:hover { transform: translateY(-2px); background: #2563eb; }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: 600; border: 1px solid var(--border-default); transition: 0.3s; display: inline-flex; align-items: center; justify-content: center; gap: 8px;}
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.hero { height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding-top: 80px; position: relative; overflow: hidden;}
.hero h1 { font-size: 48px; font-weight: 700; margin-bottom: 20px; line-height: 1.2; }
.hero .subtitle { font-size: 20px; color: var(--text-secondary); margin-bottom: 40px; }
.hero-actions { display: flex; gap: 20px; justify-content: center; margin-bottom: 60px; }
.stats-grid { display: flex; gap: 30px; justify-content: center; }
.stat-card { background: var(--bg-glass); border: 1px solid var(--border-default); padding: 20px 40px; border-radius: 12px; backdrop-filter: blur(10px); }
.stat-num { font-family: var(--font-mono); font-size: 32px; color: var(--accent-primary); margin-bottom: 5px; }
.animated-grid { position: absolute; width: 100%; height: 100%; background-image: linear-gradient(var(--border-default) 1px, transparent 1px), linear-gradient(90deg, var(--border-default) 1px, transparent 1px); background-size: 50px 50px; top: 0; left: 0; z-index: -1; opacity: 0.2; transform: perspective(500px) rotateX(60deg); transform-origin: bottom; }
.modules-section { padding: 80px 40px; text-align: center; }
.modules-grid { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-top: 40px;}
.module-card { background: var(--bg-secondary); border: 1px solid var(--border-default); padding: 30px; border-radius: 12px; width: 200px; transition: 0.3s; }
.module-card:hover { transform: translateY(-5px); border-color: var(--accent-primary); box-shadow: var(--glow-blue); }
.module-card i { color: var(--accent-primary); width: 32px; height: 32px; margin-bottom: 15px; }
footer { text-align: center; padding: 40px; border-top: 1px solid var(--border-default); color: var(--text-muted); }

/* App Styles & Layout */
.app-container { display: flex; height: 100vh; overflow: hidden; }
.sidebar { width: 260px; background: var(--bg-primary); border-right: 1px solid var(--border-default); display: flex; flex-direction: column; padding: 20px 0; transition: width 0.3s ease; }
.sidebar-header { padding: 0 20px 20px; border-bottom: 1px solid var(--border-default); margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; }
.tagline { color: var(--text-muted); font-size: 12px; margin-top: 5px; }
.nav-links { list-style: none; flex: 1; overflow-x: hidden; }

/* Collapsible Sidebar States */
.sidebar.collapsed { width: 80px; }
.sidebar.collapsed .sidebar-text { display: none; }
.sidebar.collapsed .nav-links li { justify-content: center; padding: 12px 0; }
.sidebar.collapsed .nav-item { justify-content: center; }
.sidebar.collapsed .sidebar-bottom { padding: 20px 10px; }
.sidebar.collapsed .sidebar-toggle { margin: 0 auto !important; }
.sidebar.collapsed .logo { justify-content: center; }
.nav-links li { padding: 12px 20px; display: flex; align-items: center; gap: 12px; color: var(--text-secondary); cursor: pointer; font-size: 14px; font-weight: 500; transition: 0.2s;}
.nav-links li:hover { background: var(--bg-tertiary); }
.nav-links li.active { border-left: 4px solid var(--accent-primary); background: rgba(59, 130, 246, 0.1); color: var(--text-primary); }
.sidebar-bottom { padding: 20px; border-top: 1px solid var(--border-default); }
.nav-item { display: flex; align-items: center; gap: 12px; color: var(--text-secondary); cursor: pointer; font-size: 14px; margin-bottom: 20px;}
.system-status-box { background: var(--bg-secondary); padding: 15px; border-radius: 8px; border: 1px solid var(--border-default); font-size: 12px; font-family: var(--font-mono); }
.status-row { margin-bottom: 5px; }

.main-content { flex: 1; display: flex; flex-direction: column; background: var(--bg-primary); overflow-y: hidden;}
#views-container { flex: 1; overflow-y: auto; overflow-x: hidden; position: relative;}
.view-section { animation: fadeIn 0.3s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.top-bar { height: 64px; border-bottom: 1px solid var(--border-default); display: flex; align-items: center; justify-content: space-between; padding: 0 30px; background: var(--bg-primary); min-height: 64px;}
.breadcrumb { display: flex; align-items: baseline; gap: 10px; }
.top-actions { display: flex; align-items: center; gap: 20px; }
.search-box { display: flex; align-items: center; background: var(--bg-secondary); padding: 8px 15px; border-radius: 20px; border: 1px solid var(--border-default); }
.search-box input { background: transparent; border: none; color: var(--text-primary); outline: none; margin-left: 10px; font-family: var(--font-primary); width: 100%;}
.notification-bell { position: relative; color: var(--text-secondary); cursor: pointer; }
.notification-bell .badge { position: absolute; top: -5px; right: -5px; background: var(--accent-danger); color: white; font-size: 10px; padding: 2px 5px; border-radius: 10px; font-weight: bold; border: none; display: flex; align-items: center; justify-content: center; line-height: 1;}
.avatar { width: 32px; height: 32px; background: var(--accent-primary); border-radius: 50%; display: flex; justify-content: center; align-items: center;}

.page-content { padding: 40px; max-width: 1400px; margin: 0 auto; }
.cursor-pointer { cursor: pointer; }
.lucide { vertical-align: middle; display: inline-flex; }

/* Utilities */
.mb-2 { margin-bottom: 10px; }
.mb-4 { margin-bottom: 20px; }
.mt-2 { margin-top: 10px; }
.mt-4 { margin-top: 20px; }
.mr-2 { margin-right: 10px; }
.ml-2 { margin-left: 10px; }
.text-center { text-align: center; }
.w-100 { width: 100%; }

/* Cards & Stats */
.card { background: var(--bg-secondary); border: 1px solid var(--border-default); border-radius: 12px; padding: 20px; backdrop-filter: blur(10px); transition: 0.2s; }
.card:hover { border-color: var(--border-active); box-shadow: var(--glow-blue); }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 15px; display: flex; align-items: center; gap: 8px;}

.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 30px; }
.stat-card-sm { background: var(--bg-secondary); border: 1px solid var(--border-default); border-radius: 12px; padding: 15px; display: flex; align-items: center; gap: 15px; transition: 0.2s; border-left-style: solid; border-left-width: 4px;}
.stat-card-sm:hover { border-color: var(--border-active); box-shadow: var(--glow-blue); }
.stat-card-sm.border-red { border-left-color: var(--accent-danger); }
.stat-card-sm.border-green { border-left-color: var(--accent-success); }
.stat-card-sm.border-blue { border-left-color: var(--accent-primary); }
.stat-card-sm.border-purple { border-left-color: var(--accent-purple); }
.stat-card-sm.border-amber { border-left-color: var(--accent-warning); }

.stat-icon { width: 40px; height: 40px; border-radius: 50%; display: flex; justify-content: center; align-items: center; flex-shrink: 0;}
.bg-red-light { background: rgba(239, 68, 68, 0.1); }
.bg-green-light { background: rgba(16, 185, 129, 0.1); }
.bg-blue-light { background: rgba(59, 130, 246, 0.1); }
.bg-purple-light { background: rgba(139, 92, 246, 0.1); }

/* Startup Overlay */
.startup-overlay { position: absolute; top:0; left:0; width:100%; height:100%; background: var(--bg-primary); z-index: 50; display:flex; flex-direction:column; justify-content:center; align-items:center; color: var(--accent-primary); font-family: var(--font-mono); font-size: 16px; border-radius: inherit; }
.startup-spinner { border: 4px solid rgba(59, 130, 246, 0.2); border-top-color: var(--accent-primary); border-radius: 50%; width: 40px; height: 40px; animation: spin 1s linear infinite; margin-bottom: 20px;}
@keyframes spin { 100% { transform: rotate(360deg); } }
.text-red { color: var(--accent-danger) !important; }
.text-green { color: var(--accent-success) !important; }
.text-blue { color: var(--accent-primary) !important; }
.text-purple { color: var(--accent-purple) !important; }
.stat-info { display: flex; flex-direction: column; }
.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.stat-val { font-family: var(--font-mono); font-size: 24px; font-weight: 700; }
.stat-sub { font-size: 11px; }

/* Grids */
.grid-2-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 30px; }
.grid-3-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; margin-bottom: 30px; }

/* Dashboard Specifics */
.video-placeholder { background: #000; height: 200px; border-radius: 8px; position: relative; margin-bottom: 10px; background-image: url('https://images.unsplash.com/photo-1504307651254-35680f356f58?auto=format&fit=crop&q=80'); background-size: cover; background-position: center;}
.bounding-box { position: absolute; border: 2px solid; background: rgba(0,0,0,0.2); transition: all 0.3s;}
.box-green { border-color: var(--accent-success); }
.box-red { border-color: var(--accent-danger); box-shadow: var(--glow-red); animation: pulse 2s infinite; }
.box-blue { border-color: var(--accent-primary); box-shadow: var(--glow-blue); }
.box-label { background: rgba(0,0,0,0.8); color: white; font-size: 10px; font-family: var(--font-mono); padding: 2px 4px; position: absolute; top: -18px; left: -2px; white-space: nowrap;}
.video-footer { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-secondary); }
.badge-ai { color: var(--accent-purple); font-weight: bold; }

@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); } 70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); } 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); } }

/* Alerts Feed & Dots */
.alert-feed { list-style: none; padding-right: 10px; max-height: 200px; overflow-y: auto;}
.alert-feed li { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border-default); font-size: 13px; font-family: var(--font-mono); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0;}
.dot.critical { background: var(--accent-danger); box-shadow: var(--glow-red); }
.dot.warning { background: var(--accent-warning); }
.dot.info { background: var(--accent-success); }
.dot.online { background: var(--accent-success); }
.time { color: var(--text-muted); }
.alert-text { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge { padding: 4px 8px; border-radius: 4px; font-size: 10px; display: inline-flex; align-items: center; justify-content: center; vertical-align: middle; font-weight: 600; line-height: 1.2; text-transform: uppercase; letter-spacing: 0.5px;}
.badge-red { background: rgba(239, 68, 68, 0.2); color: var(--accent-danger); border: 1px solid var(--accent-danger);}
.badge-amber { background: rgba(245, 158, 11, 0.2); color: var(--accent-warning); border: 1px solid var(--accent-warning);}
.badge-green { background: rgba(16, 185, 129, 0.2); color: var(--accent-success); border: 1px solid var(--accent-success);}
.badge-blue { background: rgba(59, 130, 246, 0.2); color: var(--accent-primary); border: 1px solid var(--accent-primary);}

/* Maps & Audio */
.zone-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 10px; }
.zone { height: 45px; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 12px; border-radius: 6px; border: 1px solid; cursor: pointer; transition: 0.2s; }
.zone:hover { opacity: 0.8; transform: scale(1.05); }
.zone.safe { background: rgba(16, 185, 129, 0.1); border-color: var(--accent-success); color: var(--accent-success); }
.zone.caution { background: rgba(245, 158, 11, 0.1); border-color: var(--accent-warning); color: var(--accent-warning); }
.zone.alert { background: rgba(239, 68, 68, 0.1); border-color: var(--accent-danger); color: var(--accent-danger); box-shadow: var(--glow-red); }
.legend { display: flex; gap: 15px; font-size: 12px; color: var(--text-secondary); justify-content: center; }

.audio-viz { height: 60px; display: flex; align-items: center; gap: 2px; justify-content: center; margin-bottom: 10px;}
.bar { width: 4px; background: var(--accent-cyan); border-radius: 2px; transition: height 0.1s; }
.audio-stats { text-align: center; }
.db-text { font-family: var(--font-mono); font-size: 28px; font-weight: 700; color: var(--text-primary); }
.demo-audio-danger .bar { background: var(--accent-danger); }

/* Translation & Knowledge */
.translation-list { display: flex; flex-direction: column; gap: 10px; }
.trans-item { background: rgba(255,255,255,0.02); padding: 10px; border-radius: 6px; }
.lang-pair { font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); display: block; margin-bottom: 4px; }
.knowledge-quote { font-style: italic; color: var(--text-secondary); font-size: 14px; border-left: 2px solid var(--accent-purple); padding-left: 10px; margin-bottom: 10px; }
.author { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }

/* ================= LIVE VIEW (GLASSES) ================= */
.grid-layout-live { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; height: calc(100vh - 130px); }
.glasses-main { display: flex; flex-direction: column; gap: 15px; }
.glasses-lens { flex: 1; background-image: url('https://images.unsplash.com/photo-1504307651254-35680f356f58?auto=format&fit=crop&q=80'); background-size: cover; background-position: center; border-radius: 24px; position: relative; overflow: hidden; border: 4px solid #000; box-shadow: inset 0 0 50px rgba(0,0,0,0.5); }
.hud-bottom { position: absolute; bottom: 0; width: 100%; padding: 15px 20px; background: linear-gradient(transparent, rgba(0,0,0,0.8)); display: flex; gap: 20px; font-family: var(--font-mono); font-size: 14px; color: var(--text-primary); text-shadow: 1px 1px 2px #000;}
.demo-controls { display: flex; gap: 15px; justify-content: center; }
.ai-feed-panel { display: flex; flex-direction: column; }
.ai-log { flex: 1; background: #000; border-radius: 8px; padding: 15px; font-family: var(--font-mono); font-size: 12px; overflow-y: auto; max-height: 250px; border: 1px solid var(--border-default); }
.log-entry { margin-bottom: 8px; padding-bottom: 8px; border-bottom: 1px dashed rgba(255,255,255,0.1); animation: fadeIn 0.3s; }
.log-vision { color: var(--accent-primary); }
.log-audio { color: var(--accent-cyan); }
.log-rag { color: var(--accent-warning); }
.log-trans { color: var(--accent-purple); }

/* ================= SAFETY & MATERIALS ================= */
.filter-bar { padding: 15px; display: flex; gap: 15px; }
.styled-select { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-default); padding: 8px 12px; border-radius: 8px; font-family: var(--font-primary); outline: none; }
.styled-select option { background-color: var(--bg-tertiary); color: var(--text-primary); }
.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px;}
.data-table th { padding: 12px; border-bottom: 2px solid var(--border-default); color: var(--text-muted); font-weight: 600;}
.data-table td { padding: 12px; border-bottom: 1px solid var(--border-default); }
.alert-row { background: rgba(239, 68, 68, 0.05); }
.mismatch-row { background: rgba(239, 68, 68, 0.05); border-left: 4px solid var(--accent-danger); }
.mismatch-row:hover { background: rgba(239, 68, 68, 0.1); }

/* ================= BABELSITE ================= */
.translation-panel { display: flex; align-items: center; justify-content: space-between; gap: 20px;}
.trans-box { flex: 1; background: var(--bg-tertiary); padding: 20px; border-radius: 12px; border: 1px solid var(--border-default); }
.trans-arrow { color: var(--accent-primary); animation: pulseArrow 2s infinite; }
@keyframes pulseArrow { 0% { opacity: 0.5; transform: scale(1); } 50% { opacity: 1; transform: scale(1.1); } 100% { opacity: 0.5; transform: scale(1); } }
.trans-textarea { width: 100%; height: 120px; background: transparent; border: none; color: var(--text-primary); font-size: 24px; font-family: var(--font-primary); outline: none; resize: none; margin-top: 10px;}
.trans-textarea.target { color: var(--accent-success); }

/* ================= DEMO AI SAFETY ================= */
.demo-legend { display: flex; gap: 20px; font-size: 13px; color: var(--text-secondary); }
.demo-video-card { padding: 0; overflow: hidden; display: flex; flex-direction: column;}
.demo-card-header { padding: 15px 20px; display: flex; align-items: center; gap: 15px; }
.demo-num { width: 28px; height: 28px; background: var(--accent-primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 14px;}
.demo-num.bg-purple { background: var(--accent-purple); }
.demo-toggle-group { display: flex; border-top: 1px solid var(--border-default); border-bottom: 1px solid var(--border-default); }
.demo-toggle { flex: 1; padding: 12px; background: var(--bg-secondary); border: none; color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 500; font-family: var(--font-primary); transition: 0.2s; font-size: 13px;}
.demo-toggle:hover { background: var(--bg-tertiary); }
.demo-toggle.active { background: var(--accent-purple); color: white; }
.demo-video-container { height: 300px; position: relative; background: #000; display: flex; align-items: center; justify-content: center;}
.demo-vid { width: 100%; height: 100%; object-fit: contain; }
.demo-video-footer { padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border-default); font-family: var(--font-mono); color: var(--text-secondary); font-size: 13px;}
.btn-icon { background: transparent; border: none; color: var(--text-primary); cursor: pointer; width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; transition: 0.2s;}
.btn-icon:hover { background: var(--bg-tertiary); color: var(--accent-primary); }