:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-panel: rgba(26, 29, 39, 0.85);
    --border-color: #2e3446;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-yellow: #f59e0b;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header & Top Bar */
.top-bar {
    height: 52px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
    flex-shrink: 0;
    gap: 16px;
}

.top-bar-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, #3b82f6, #10b981);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    color: white;
}

.brand-title {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #ffffff;
}

.brand-badge {
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    background-color: #1e293b;
    border: 1px solid #334155;
    color: #93c5fd;
    padding: 2px 7px;
    border-radius: 4px;
    letter-spacing: 0.2px;
}

.controls-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ctrl-btn {
    background-color: #242938;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s ease;
}

.ctrl-btn:hover {
    background-color: #2e364a;
    border-color: #4b5563;
}

.ctrl-btn.active {
    background-color: #1d4ed8;
    border-color: #3b82f6;
    color: white;
}

.ctrl-btn.btn-warning.active {
    background-color: #b45309;
    border-color: #f59e0b;
}

.ctrl-select {
    background-color: #242938;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    outline: none;
}

.ctrl-select:focus {
    border-color: var(--accent-blue);
}

/* Main Viewport Container */
.viewport-container {
    flex: 1;
    position: relative;
    background-color: #08090d;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8px;
}

#cameraFeed {
    display: none;
}

/* Sized accurately by aspect-ratio inside flex container */
#renderCanvas {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    cursor: crosshair;
    display: block;
    box-shadow: 0 0 24px rgba(0, 0, 0, 0.9);
    border-radius: 4px;
}

/* HUD Overlay Layer */
.hud-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 16px;
}

.hud-top-right {
    align-self: flex-end;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: auto;
}

.hud-indicator {
    background-color: var(--bg-panel);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hud-indicator .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #10b981;
}

.hud-indicator.mode-val .dot {
    background-color: #f59e0b;
}

/* Bottom Dedicated Status Bar (Dedicated footer below camera view, never covers image) */
.bottom-bar {
    height: 42px;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 16px;
    z-index: 90;
    flex-shrink: 0;
    gap: 12px;
}

.status-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.status-left::-webkit-scrollbar {
    display: none;
}

.target-badge {
    background: linear-gradient(135deg, #0284c7, #0369a1);
    color: white;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: 0.5px;
    box-shadow: 0 0 12px rgba(2, 132, 199, 0.4);
}

.group-counts-container {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.group-chip {
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid #374151;
    background-color: #1f2430;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.group-chip.active {
    color: #ffffff;
    border-color: #4b5563;
}

.group-chip.complete {
    background-color: rgba(16, 185, 129, 0.2);
    border-color: #10b981;
    color: #34d399;
    font-weight: 700;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
}

/* Validation Stats in HUD */
.val-summary-line {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.val-primary-text {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: #fbbf24;
}

.val-secondary-text {
    font-family: var(--font-mono);
    font-size: 12px;
    color: #f87171;
}

/* Sidebar Drawer for Validation / Logs */
.drawer {
    position: fixed;
    top: 52px;
    right: -420px;
    width: 420px;
    bottom: 0;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
    transition: right 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 90;
    display: flex;
    flex-direction: column;
}

.drawer.open {
    right: 0;
}

.drawer-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.drawer-title {
    font-size: 15px;
    font-weight: 700;
}

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.table-wrapper {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

table.val-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 12px;
}

table.val-table th {
    position: sticky;
    top: 0;
    background-color: #242938;
    padding: 8px 10px;
    text-align: left;
    color: var(--text-dim);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

table.val-table td {
    padding: 6px 10px;
    border-bottom: 1px solid #232733;
}

table.val-table tr.err-row {
    background-color: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
}

table.val-table tr.ok-row {
    color: #86efac;
}

/* Modal for Help / Settings */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

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

.modal-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    width: 520px;
    max-width: 90vw;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.modal-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 18px;
    max-height: 70vh;
    overflow-y: auto;
    font-size: 13px;
    line-height: 1.6;
}

.shortcut-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #232733;
}

.kbd {
    background-color: #242938;
    border: 1px solid #374151;
    border-radius: 4px;
    padding: 2px 6px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: #60a5fa;
}

.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #232733;
}

.setting-label {
    display: flex;
    flex-direction: column;
}

.setting-title {
    font-weight: 600;
    color: var(--text-main);
}

.setting-desc {
    font-size: 11px;
    color: var(--text-dim);
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #11141d;
}
::-webkit-scrollbar-thumb {
    background: #2e3446;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #4b5563;
}

/* ==========================================================================
   Responsive & Mobile Adaptations
   ========================================================================== */

/* Tablet & Mobile Breakpoint (<= 920px) */
@media (max-width: 920px) {
    .top-bar {
        display: grid;
        grid-template-columns: 1fr auto;
        padding: 8px 12px;
        height: auto;
        min-height: auto;
        gap: 8px;
    }

    .brand {
        grid-column: 1;
        align-self: center;
    }

    .top-bar-actions {
        grid-column: 2;
        justify-self: end;
        align-self: center;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .top-bar-toolbar {
        grid-column: 1 / -1;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        display: flex;
        gap: 8px;
        padding-bottom: 2px;
        scrollbar-width: none;
    }

    .top-bar-toolbar::-webkit-scrollbar {
        display: none;
    }

    .ctrl-select,
    .ctrl-btn {
        flex-shrink: 0;
        min-height: 38px;
        padding: 6px 11px;
    }

    .drawer {
        width: 100vw;
        right: -100vw;
        top: 96px;
    }
}

/* Smartphone Breakpoint (<= 560px) */
@media (max-width: 560px) {
    .brand-title {
        font-size: 14px;
    }

    .brand-badge {
        font-size: 10px;
        padding: 1px 5px;
    }

    .bottom-bar {
        height: 38px;
        padding: 0 10px;
    }

    .target-badge {
        font-size: 12px;
        padding: 3px 8px;
    }

    .group-chip {
        font-size: 11px;
        padding: 2px 6px;
    }

    .group-counts-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex-wrap: nowrap;
        max-width: 100%;
        scrollbar-width: none;
    }

    .group-counts-container::-webkit-scrollbar {
        display: none;
    }

    .hud-top-right {
        top: 10px;
        right: 10px;
    }

    .hud-indicator {
        font-size: 11px;
        padding: 4px 8px;
    }
}