:root {
    --primary-dark-green: #1a472a;
    --primary-green: #2e8b57;
    --primary-green-light: #3cb371;
    --accent-teal: #20b2aa;
    --accent-gold: #daa520;
    --dark-bg: #0f172a;
    --dark-card: #1e293b;
    --light-bg: #f8fafc;
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
    --border-dark: #334155;
    --border-light: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition-speed: 0.2s;
}

/* Base Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 0.875rem;
    line-height: 1.5;
    color: #334155;
    background-color: var(--light-bg);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }
h5 { font-size: 0.875rem; }
h6 { font-size: 0.75rem; }

/* Sleeker Cards */
.card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    margin-bottom: 1.25rem;
    transition: all var(--transition-speed);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-1px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-green-light);
}

/* Compact Card Headers */
.card-header {
    background: white;
    color: var(--dark-bg);
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
    letter-spacing: 0.01em;
}

.card-header.bg-dark {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%) !important;
    color: white;
    border-bottom: none;
}

.card-title {
    color: inherit;
    font-weight: 600;
    margin: 0;
    font-size: 0.9375rem;
}

/* Card Body Padding */
.card-body {
    padding: 1rem 1.25rem;
}

/* Stream Card Specific Fixes - UPDATED FOR CANVAS */

/* Canvas for smooth video rendering */
#video-canvas {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    background: #000 !important;
    display: none; /* Hidden by default, shown when streaming */
    z-index: 90 !important;
    transition: opacity 0.2s ease;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Keep regular img element for fallback */
#video-stream {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    background: #000 !important;
    display: none; /* Hidden when using canvas */
    z-index: 85 !important;
}

/* Placeholder styling */
#stream-placeholder {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    z-index: 80;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%) !important;
    transition: opacity 0.3s ease;
}

/* Video container */
#video-display {
    position: relative !important;
    min-height: 200px !important;
    max-height: 400px !important;
    background: #000 !important;
    overflow: hidden !important;
}

/* Live indicator */
#live-indicator {
    position: absolute !important;
    top: 10px !important;
    left: 10px !important;
    z-index: 110 !important;
    animation: pulse 2s infinite !important;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

/* Timestamp styling */
#frame-timestamp {
    position: absolute !important;
    bottom: 10px !important;
    right: 10px !important;
    background: rgba(0, 0, 0, 0.75) !important;
    color: white !important;
    padding: 4px 8px !important;
    border-radius: 4px !important;
    font-size: 0.75rem !important;
    font-family: monospace !important;
    z-index: 110 !important;
    display: none; 
    align-items: center !important;
    gap: 4px !important;
    backdrop-filter: blur(2px) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
}

#frame-timestamp .badge {
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    font-size: inherit !important;
}

#frame-timestamp .timestamp-text {
    font-weight: 600 !important;
    letter-spacing: 0.5px !important;
}

/* FPS Badge */
#fps-badge {
    transition: all 0.3s ease;
}

/* Ensure stream status is always visible */
#stream-status {
    display: block !important;
    margin-top: 0.75rem;
    margin-bottom: 0 !important;
}

/* Compact Stats Cards */
.stat-card {
    background: white;
    border-radius: 10px;
    padding: 1rem;
    border: 1px solid var(--border-light);
    transition: all var(--transition-speed);
    height: 100%;
}

.stat-card:hover {
    border-color: var(--primary-green);
    box-shadow: var(--card-shadow-hover);
}

.stat-icon {
    font-size: 1.5rem;
    color: var(--primary-green);
    margin-bottom: 0.75rem;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Sleeker Buttons */
.btn {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all var(--transition-speed);
    border: none;
    font-size: 0.875rem;
    line-height: 1.25;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-dark-green) 100%);
    border: none;
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-green-light) 0%, var(--primary-green) 100%);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(46, 139, 87, 0.2);
}

.btn-outline-primary {
    color: var(--primary-green);
    border: 1px solid var(--primary-green);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-green);
    color: white;
    border-color: var(--primary-green);
}

/* Sleeker Form Controls */
.form-control, .form-select {
    border: 1px solid var(--border-light);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    transition: all var(--transition-speed);
    line-height: 1.5;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 2px rgba(46, 139, 87, 0.1);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: #334155;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
}

/* Badges */
.badge {
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    letter-spacing: 0.02em;
}

.badge.bg-success { background-color: var(--success) !important; }
.badge.bg-warning { background-color: var(--warning) !important; color: white !important; }
.badge.bg-danger { background-color: var(--danger) !important; }
.badge.bg-info { background-color: var(--info) !important; }
.badge.bg-primary { background-color: var(--primary-green) !important; }

/* Sleeker Alerts */
.alert {
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-info {
    background-color: #eff6ff;
    color: #1d4ed8;
}

.alert-success {
    background-color: #f0fdf4;
    color: #15803d;
}

.alert-warning {
    background-color: #fefce8;
    color: #a16207;
}

.alert-danger {
    background-color: #fef2f2;
    color: #b91c1c;
}

/* Tables */
.table {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    margin: 0;
    font-size: 0.875rem;
}

.table th {
    background-color: #f8fafc;
    border: none;
    font-weight: 600;
    color: #334155;
    padding: 0.75rem 1rem;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    padding: 0.75rem 1rem;
    vertical-align: middle;
    border-color: var(--border-light);
}

/* Chat Interface - Sleeker */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 380px;
    background: white;
    border-radius: 10px;
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: linear-gradient(180deg, #f8fafc 0%, white 100%);
}

.chat-message {
    max-width: 85%;
    margin-bottom: 0.75rem;
    padding: 0.625rem 0.875rem;
    border-radius: 10px;
    position: relative;
    animation: fadeIn 0.2s ease;
    font-size: 0.875rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-user {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-dark-green) 100%);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.chat-ai {
    background: white;
    border: 1px solid var(--border-light);
    margin-right: auto;
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.chat-input-area {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-light);
    background: white;
}

/* Heartbeat Status Row */
.heartbeat-row {
    background: linear-gradient(135deg, #f8fafc 0%, white 100%);
    border-bottom: 1px solid var(--border-light);
    padding: 0.625rem 1rem;
}

.heartbeat-item {
    display: flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    background: white;
    border-radius: 6px;
    border: 1px solid var(--border-light);
    transition: all var(--transition-speed);
    font-size: 0.75rem;
}

.heartbeat-item:hover {
    background: #f8fafc;
    transform: translateY(-1px);
}

.status-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-right: 4px;
    position: relative;
}

.status-dot.online {
    background-color: var(--success);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
    animation: pulse-active 1.5s infinite;
}

.status-dot.offline {
    background-color: var(--danger);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

@keyframes pulse-active {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
    100% { opacity: 1; transform: scale(1); }
}

/* Activity Badges */
.activity-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 5px;
    font-size: 0.6875rem;
    transition: all 0.2s ease;
    position: relative;
}

.activity-badge.streaming {
    background-color: rgba(245, 101, 101, 0.1);
    color: var(--danger);
    border: 1px solid rgba(245, 101, 101, 0.2);
}

.activity-badge.recording {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning);
    border: 1px solid rgba(255, 193, 7, 0.2);
}

.activity-badge.capturing {
    background-color: rgba(23, 162, 184, 0.1);
    color: var(--info);
    border: 1px solid rgba(23, 162, 184, 0.2);
}

.activity-badge.idle {
    background-color: rgba(108, 117, 125, 0.1);
    color: var(--text-muted);
    border: 1px solid rgba(108, 117, 125, 0.2);
}

.activity-badge.activity-indicator {
    animation: pulse-active 1s infinite;
}

/* Quick Actions Grid */
.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
}

/* Stream Controls */
.stream-controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.stream-controls .btn {
    flex: 1;
    min-width: 100px;
}

/* Extra Small Text */
.extra-small {
    font-size: 0.75rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .card-header {
        padding: 0.625rem 1rem;
    }
    
    .card-body {
        padding: 0.875rem 1rem;
    }
    
    .chat-message {
        max-width: 90%;
    }
    
    .btn {
        padding: 0.5rem 0.875rem;
    }
    
    #video-display {
        max-height: 300px;
    }
}

@media (max-width: 576px) {
    .stat-card {
        padding: 0.875rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .heartbeat-item {
        font-size: 0.6875rem;
    }
    
    .quick-actions-grid {
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    }
    
    #video-display {
        max-height: 250px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #0f172a;
        color: #cbd5e1;
    }
    
    .card {
        background-color: #1e293b;
        border-color: #334155;
    }
    
    .card-header {
        background-color: #1e293b;
        color: #e2e8f0;
        border-color: #334155;
    }
    
    .table {
        background-color: #1e293b;
        color: #cbd5e1;
    }
    
    .table th {
        background-color: #334155;
        color: #e2e8f0;
    }
    
    #stream-placeholder {
        background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    }
}

/* Utility Classes */
.text-primary { color: var(--primary-green) !important; }
.bg-primary { background-color: var(--primary-green) !important; }
.border-primary { border-color: var(--primary-green) !important; }

/* Loading States */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 6px;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Print Styles */
@media print {
    .navbar, footer, .btn, .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* Custom Scrollbar for Chat */
.chat-messages::-webkit-scrollbar {
    width: 4px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 2px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--primary-green);
}

/* Device Status Indicators */
.device-card .icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.icon-wrapper.online {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.icon-wrapper.offline {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.icon-wrapper.pending {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

/* Auth Pages */
.auth-wrapper {
    min-height: calc(100vh - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, var(--primary-dark-green) 0%, var(--primary-green) 100%);
}

.auth-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    width: 100%;
    max-width: 420px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-logo img {
    height: 60px;
    margin-bottom: 1rem;
}

.auth-logo h2 {
    color: var(--dark-bg);
    margin-bottom: 0.5rem;
}

.auth-logo p {
    color: var(--text-muted);
}

/* Modal Styling */
.modal-content {
    border: none;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-light);
}

/* List Groups */
.list-group-item {
    border: 1px solid var(--border-light);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

.list-group-item:first-child {
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.list-group-item:last-child {
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

/* Progress Bars */
.progress {
    height: 6px;
    border-radius: 3px;
    background-color: var(--border-light);
}

.progress-bar {
    background-color: var(--primary-green);
    border-radius: 3px;
}

/* Nav Tabs */
.nav-tabs {
    border-bottom: 1px solid var(--border-light);
}

.nav-tabs .nav-link {
    border: none;
    padding: 0.75rem 1rem;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
}

.nav-tabs .nav-link.active {
    color: var(--primary-green);
    background: transparent;
    border-bottom: 2px solid var(--primary-green);
}

.nav-tabs .nav-link:hover {
    color: var(--primary-green);
    border-color: transparent;
    background-color: #10b981;
}

/* Heartbeat Status Icon in Chat Header */
.heartbeat-status-icon {
    position: relative;
    font-size: 0.9rem;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

/* Different status colors */
.heartbeat-status-icon.streaming {
    color: #ef4444; /* red */
}

.heartbeat-status-icon.recording {
    color: #f59e0b; /* orange */
}

.heartbeat-status-icon.capturing {
    color: #3b82f6; /* blue */
}

.heartbeat-status-icon.idle {
    color: #10b981; /* green */
    animation: none; /* No animation when idle */
}

/* Smooth video transitions - NEW */
.video-fade-in {
    animation: videoFadeIn 0.3s ease forwards;
}

@keyframes videoFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Canvas performance optimization - NEW */
#video-canvas {
    image-rendering: -webkit-optimize-contrast; /* Chrome/Edge */
    image-rendering: -moz-crisp-edges; /* Firefox */
    image-rendering: pixelated; /* Modern browsers */
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -webkit-transform: translate3d(0, 0, 0);
    -moz-transform: translate3d(0, 0, 0);
}

/* Remove conflicting border from video display - REMOVED */
/* Previous line: border: 2px solid #00ff00 !important;  */

/* Force hardware acceleration for smooth rendering - NEW */
#video-display {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    -moz-transform: translateZ(0);
}