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

:root {
    /* Broadcast tamna tema */
    --bg-primary: #0a0c12;
    --bg-secondary: #11131a;
    --bg-tertiary: #1a1d26;
    --bg-card: #15171f;
    --border-color: #252a35;
    --border-light: #2d3340;
    
    /* Broadcast boje */
    --broadcast-red: #e50914;
    --broadcast-blue: #0078ff;
    --broadcast-green: #00b894;
    --broadcast-yellow: #f59e0b;
    --broadcast-purple: #8b5cf6;
    
    /* Tekst */
    --text-primary: #ffffff;
    --text-secondary: #a0a5b5;
    --text-muted: #6c7283;
    
    /* Status */
    --success: #00b894;
    --warning: #f59e0b;
    --danger: #e50914;
    --info: #0078ff;
    
    /* Sjene */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    font-size: 13px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-tertiary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

/* Layout */
.app {
    display: flex;
    height: 100vh;
    background: var(--bg-primary);
}

/* ========== SIDEBAR ========== */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

/* Logo */
.logo {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}
.logo h1 {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, #fff, var(--broadcast-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 4px;
}
.logo p {
    font-size: 10px;
    color: var(--text-muted);
}

/* Status card (broj kamera, zoom, scale) */
.status-card {
    margin: 0 12px 20px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 12px;
    border: 1px solid var(--border-color);
}
.status-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 11px;
}
.status-row:last-child { margin-bottom: 0; }
.status-label {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}
.status-value {
    font-weight: 600;
    color: var(--broadcast-blue);
}
.status-value.cameras { color: var(--broadcast-green); }
.status-value.zoom { color: var(--broadcast-yellow); }

/* Donate button */
.donate-btn {
    margin: 0 12px 20px;
    background: linear-gradient(135deg, #f5f5f5, #e0e0e0);
    border: none;
    border-radius: 40px;
    padding: 10px;
    color: #1a1d26;
    font-weight: 700;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s;
}
.donate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.donate-btn i { font-size: 16px; color: #ffc107; }

/* Menu groups */
.menu-group {
    margin-bottom: 8px;
}
.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    font-size: 12px;
    border-radius: 0;
}
.menu-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}
.menu-item i { width: 20px; font-size: 14px; }
.menu-item.active {
    background: var(--bg-tertiary);
    color: var(--broadcast-blue);
    border-left: 3px solid var(--broadcast-blue);
}

/* Dropdown submenu */
.submenu {
    margin-left: 28px;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.2s ease;
}
.submenu.open {
    max-height: 300px;
}
.submenu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    font-size: 11px;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 6px;
    margin: 2px 0;
}
.submenu-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}
.submenu-item i { width: 16px; font-size: 11px; }

/* Menu divider */
.menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 16px;
}

/* Sidebar footer */
.sidebar-footer {
    margin-top: auto;
    padding: 16px;
    text-align: center;
    font-size: 10px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}
.sidebar-footer a {
    color: var(--text-muted);
    text-decoration: none;
}
.sidebar-footer a:hover { color: var(--broadcast-blue); }

/* ========== MAIN CONTENT ========== */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top bar */
.top-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    z-index: 50;
}

.quick-stats {
    display: flex;
    gap: 15px;
}
.quick-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    background: var(--bg-tertiary);
    padding: 4px 10px;
    border-radius: 20px;
}
.quick-stat i { color: var(--broadcast-blue); font-size: 11px; }
.quick-stat .value { font-weight: 600; color: var(--text-primary); }

.undo-redo {
    display: flex;
    gap: 6px;
}
.undo-redo button {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.undo-redo button:hover {
    background: var(--border-light);
    border-color: var(--broadcast-blue);
}

/* Tab navigation */
.tab-nav {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
}
.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 2px solid transparent;
}
.tab-btn.active {
    color: var(--broadcast-blue);
    border-bottom-color: var(--broadcast-blue);
}
.tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

/* Canvas */
.canvas-container {
    flex: 1;
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
    cursor: grab;
}
.canvas-container:active { cursor: grabbing; }

/* Legend */
.legend-panel {
    position: absolute;
    bottom: 16px;
    right: 16px;
    background: rgba(21, 23, 31, 0.95);
    backdrop-filter: blur(8px);
    border-radius: 10px;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    font-size: 10px;
    z-index: 20;
}
.legend-title {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}
.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
}
.legend-color.camera { background: var(--broadcast-blue); }
.legend-color.trail { background: #3b82f6; }
.legend-color.fov-wide { background: #3b82f6; opacity: 0.5; }
.legend-color.fov-tele { background: #f59e0b; opacity: 0.5; }

/* Scale bar */
.scale-bar {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(21, 23, 31, 0.95);
    backdrop-filter: blur(8px);
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 9px;
    font-family: monospace;
    z-index: 20;
    border: 1px solid var(--border-color);
}

/* Control panels */
.control-panel, .property-panel {
    background: rgba(21, 23, 31, 0.98);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}
.control-panel-header, .property-panel-header {
    cursor: grab;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0,0,0,0.2);
    border-radius: 12px 12px 0 0;
}
.control-panel-header:active, .property-panel-header:active { cursor: grabbing; }
.control-panel-content, .property-panel-content {
    padding: 12px;
}

/* Form elements */
.form-group { margin-bottom: 12px; }
.form-group label {
    display: block;
    font-size: 9px;
    margin-bottom: 5px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group input, .form-group select {
    width: 100%;
    padding: 7px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 11px;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--broadcast-blue);
}
input[type="range"] {
    -webkit-appearance: none;
    background: var(--bg-tertiary);
    height: 3px;
    border-radius: 2px;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--broadcast-blue);
    cursor: pointer;
}

/* Color presets */
.color-preset {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}
.color-preset:hover { transform: scale(1.1); }

/* Camera list */
.camera-list {
    padding: 16px;
    overflow-y: auto;
    height: 100%;
}
.camera-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 8px;
}
.camera-item:hover {
    border-color: var(--broadcast-blue);
}
.camera-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}
.camera-item-header h4 {
    font-size: 12px;
    font-weight: 600;
}
.camera-details {
    font-size: 9px;
    color: var(--text-secondary);
}
.camera-details p { margin-top: 3px; }

/* Buttons */
.btn {
    padding: 8px 12px;
    border-radius: 6px;
    border: none;
    font-weight: 500;
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}
.btn-primary { background: var(--broadcast-blue); color: white; }
.btn-primary:hover { background: #0066cc; }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--border-light); }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 4px 8px; font-size: 10px; }
.w-100 { width: 100%; }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px;
    width: 90%;
    max-width: 450px;
    border: 1px solid var(--border-color);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    backdrop-filter: blur(8px);
    padding: 8px 16px;
    border-radius: 40px;
    font-size: 11px;
    z-index: 1100;
    border: 1px solid var(--border-color);
    animation: fadeOut 2s ease forwards;
}
@keyframes fadeOut {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    70% { opacity: 1; }
    100% { opacity: 0; transform: translateX(-50%) translateY(-20px); visibility: hidden; }
}

/* Mobile */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        transform: translateX(-100%);
        z-index: 200;
        width: 280px;
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.6);
        z-index: 150;
        display: none;
    }
    .sidebar-overlay.open { display: block; }
    .mobile-menu-btn {
        position: fixed;
        bottom: 20px;
        left: 20px;
        width: 48px;
        height: 48px;
        background: var(--broadcast-blue);
        border: none;
        border-radius: 50%;
        color: white;
        font-size: 20px;
        cursor: pointer;
        z-index: 250;
        box-shadow: var(--shadow-md);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .top-bar { flex-direction: column; align-items: stretch; }
    .quick-stats { justify-content: space-between; flex-wrap: wrap; }
    .legend-panel { bottom: 70px; right: 12px; }
}
@media (min-width: 769px) {
    .mobile-menu-btn { display: none; }
    .sidebar-overlay { display: none; }
}

/* Calibration indicator */
.calibration-indicator {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--broadcast-red);
    color: white;
    padding: 5px 14px;
    border-radius: 40px;
    font-size: 10px;
    font-weight: 500;
    z-index: 30;
}
.calibration-indicator.measure { background: var(--info); }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state i { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }