/* =========================================
   PARTICLE CAMERA - FULLSCREEN IMMERSIVE UI
   ========================================= */

/* 1. Reset de Tab Container voor Fullscreen gebruik */
#particle-camera-tab {
    position: relative;
    width: 100%;
    height: 100%; /* Vult de parent (main-content) */
    padding: 0 !important; /* Forceer 0 padding om dashboard spacing te negeren */
    margin: 0 !important;
    overflow: hidden; /* Geen scrollbars */
    background: #000; /* Zwarte achtergrond voor contrast */
    border-radius: var(--radius-lg); /* Optioneel: rond de hoeken af binnen het dashboard */
}

/* 2. Canvas & Video Lagen (De "Wereld") */
#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1; /* Onderste laag */
    display: block;
}

#hand-overlay-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2; /* Bovenop de particles */
    pointer-events: none; /* Zorg dat je erdoorheen kunt klikken/slepen */
}

#particle-video {
    /* Verborgen video element voor MediaPipe berekeningen */
    display: none; 
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

/* 3. Floating UI Container (HUD - Head Up Display) */
.particle-ui-container {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 280px;
    z-index: 10; /* Boven alles */
    display: flex;
    flex-direction: column;
    gap: 15px;
    pointer-events: none; /* CRUCIAAL: Laat muisklikken door naar het canvas... */
}

/* 4. De "Glazen" Boxen */
.particle-box {
    background: rgba(13, 17, 23, 0.75); /* Donkere semi-transparante achtergrond */
    backdrop-filter: blur(12px); /* Het "Frosted Glass" effect */
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 15px;
    pointer-events: auto; /* ...maar vang muisklikken wel op in de boxen zelf */
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.particle-box:hover {
    border-color: rgba(0, 255, 255, 0.3); /* Cyaan glow bij hover */
}

/* --- Camera Preview Box Specifiek --- */
.camera-preview-box {
    padding: 0; /* Geen padding voor de video */
    overflow: hidden;
}

.box-header {
    background: rgba(0, 0, 0, 0.6);
    padding: 8px 12px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary, cyan);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#particle-video-preview {
    transform: scaleX(-1); /* Spiegelen zodat links=links voelt */
}

#hand-overlay-canvas {
    transform: scaleX(-1); /* Ook de overlay spiegelen */
}

/* --- Settings & Controls --- */
.control-row {
    display: flex;
    gap: 10px;
}

.p-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.start-btn {
    background: linear-gradient(135deg, #06b6d4, #3b82f6); /* Cyaan naar Blauw */
    color: white;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.25);
}

.start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(6, 182, 212, 0.5);
}

.stop-btn {
    background: rgba(220, 38, 38, 0.15);
    color: #f87171;
    border: 1px solid rgba(220, 38, 38, 0.4);
}

.stop-btn:hover {
    background: rgba(220, 38, 38, 0.25);
    border-color: #f87171;
}

.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    margin: 15px 0;
}

/* Sliders Styling */
.control-group {
    margin-bottom: 15px;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: #9ca3af; /* Grijs */
    margin-bottom: 8px;
    font-weight: 500;
}

.control-group .val {
    color: var(--primary, cyan);
    font-family: 'JetBrains Mono', monospace;
}

/* Custom Range Input (Slider) */
input[type="range"] {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
    -webkit-appearance: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary, cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary, cyan);
    margin-top: -5px; /* Centreren op track */
    border: 2px solid #fff;
}

input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    border-radius: 2px;
}

/* Stats Footer */
.stats-footer {
    display: flex;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.4);
    margin: 5px -15px -15px -15px; /* Trek naar de randen van de padding */
    padding: 10px 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0 0 12px 12px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-item:last-child {
    align-items: flex-end;
}

.stat-item .label {
    font-size: 9px;
    color: #6b7280;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.stat-item .value {
    font-size: 14px;
    color: #e5e7eb;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

/* 5. Loading Overlay */
.particle-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.particle-loading.active {
    opacity: 1;
    pointer-events: all;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    color: var(--primary, cyan);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 2px;
    font-size: 12px;
}

.loading-content i {
    font-size: 24px;
    margin-bottom: 10px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .particle-ui-container {
        width: 100%;
        top: auto;
        bottom: 0;
        right: 0;
        left: 0;
        padding: 15px;
        flex-direction: row-reverse; /* Preview links, controls rechts */
        align-items: flex-end;
        background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    }
    
    .camera-preview-box {
        width: 100px; /* Kleinere preview op mobiel */
    }
    
    #particle-video-preview {
        height: 80px;
    }
    
    .settings-box {
        flex: 1;
    }
}