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

:root {
    --primary-color: #00ff00;
    --secondary-color: #0066ff;
    --background-color: #0a0a0a;
    --surface-color: #1a1a1a;
    --border-color: #333;
    --text-color: #e0e0e0;
    --text-muted: #999;
}

html, body {
    width: 100%;
    height: 100%;
    background: var(--background-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    display: flex;
    flex-direction: column;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

header {
    background: var(--surface-color);
    border-bottom: 2px solid var(--primary-color);
    padding: 20px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

header h1 {
    margin-bottom: 15px;
    font-size: 24px;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
    margin-bottom: 15px;
}

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

.control-group label {
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
}

select, input[type="number"], input[type="range"] {
    background: var(--background-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 8px 10px;
    font-size: 14px;
    transition: border-color 0.2s;
}

select:hover, input[type="number"]:hover, input[type="range"]:hover {
    border-color: var(--primary-color);
}

select:focus, input[type="number"]:focus, input[type="range"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(0, 255, 0, 0.2);
}

select {
    min-width: 200px;
}

input[type="range"] {
    width: 120px;
    cursor: pointer;
    padding: 4px;
}

input[type="number"] {
    width: 70px;
}

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

.input-group span {
    color: var(--text-muted);
    font-size: 12px;
    min-width: 25px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
}

.btn-primary {
    background: var(--primary-color);
    color: #000;
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.5);
    transform: scale(1.05);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--secondary-color);
    color: #fff;
}

.btn-secondary:hover:not(:disabled) {
    box-shadow: 0 0 15px rgba(0, 102, 255, 0.5);
    transform: scale(1.05);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-install {
    background: #ff6600;
    color: #fff;
}

.btn-install:hover {
    box-shadow: 0 0 15px rgba(255, 102, 0, 0.5);
    transform: scale(1.05);
}

.btn-refresh {
    background: #6666ff;
    color: #fff;
}

.btn-refresh:hover {
    box-shadow: 0 0 15px rgba(102, 102, 255, 0.5);
    transform: scale(1.05);
}

.status {
    font-size: 12px;
    color: var(--primary-color);
    margin-top: 10px;
    padding: 8px;
    background: rgba(0, 255, 0, 0.1);
    border-left: 3px solid var(--primary-color);
    border-radius: 2px;
}

.status.error {
    color: #ff4444;
    background: rgba(255, 68, 68, 0.1);
    border-left-color: #ff4444;
}

.status.success {
    color: var(--primary-color);
    background: rgba(0, 255, 0, 0.1);
    border-left-color: var(--primary-color);
}

main {
    flex: 1;
    overflow: auto;
    padding: 20px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 20px;
    height: 100%;
}

.video-container {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: border-color 0.2s;
}

.video-container:hover {
    border-color: var(--primary-color);
}

.video-container h3 {
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.video-canvas {
    flex: 1;
    background: #000;
    border-radius: 4px;
    display: block;
    min-height: 250px;
    image-rendering: crisp-edges;
}

footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 15px 20px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Responsive design */
/* Desktop & Tablet: 2x2 Grid */
@media (min-width: 769px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(2, 1fr);
        height: 100%;
    }
}

/* Mobile: 4x1 Grid (1 column, 4 rows) */
@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        height: auto;
        min-height: auto;
    }

    main {
        overflow: auto;
        padding: 15px;
    }

    .video-container {
        min-height: 250px;
    }

    header {
        padding: 15px;
    }

    header h1 {
        font-size: 18px;
        margin-bottom: 10px;
    }

    .controls {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }

    .control-group {
        flex-direction: column;
        gap: 5px;
    }

    select, input[type="range"], input[type="number"] {
        min-width: unset;
        width: 100%;
    }

    .input-group {
        flex-direction: row;
    }

    .btn {
        width: 100%;
        padding: 12px 15px;
    }
}

/* Animation for status updates */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.status {
    animation: slideIn 0.3s ease-out;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}