:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --success-color: #2ecc71;
    --bg-color: #f4f6f9;
    --card-bg: #ffffff;
    --text-color: #333;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

header p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    padding: 25px;
    margin-bottom: 20px;
    transition: transform 0.2s;
}

/* Upload Section */
.upload-area {
    border: 2px dashed #bdc3c7;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    color: #7f8c8d;
    cursor: pointer;
    transition: border-color 0.3s;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: #fbfeff;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    margin: 10px 5px;
    transition: background-color 0.3s;
}

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

.btn-primary:hover {
    background-color: #2980b9;
}

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

.btn-secondary:hover {
    background-color: #1a252f;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

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

/* Hide input */
#video-input {
    display: none;
}

.hidden {
    display: none;
}

/* Video Preview & Scanning Animation */
.video-preview-container {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    min-height: 200px;
}

video {
    width: 100%;
    display: block;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 10;
}

.scanner-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    box-shadow: 0 0 10px var(--primary-color);
    animation: scan 2s infinite linear;
}

@keyframes scan {
    0% { top: 0; opacity: 0.5; }
    50% { opacity: 1; }
    100% { top: 100%; opacity: 0.5; }
}

.status-text {
    color: white;
    font-size: 1.2rem;
    background: rgba(0,0,0,0.7);
    padding: 10px 20px;
    border-radius: 20px;
}

/* Results Section */
.result-header {
    background: var(--danger-color);
    color: white;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.risk-score-container {
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 8px solid var(--danger-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--danger-color);
}

.score-value {
    font-size: 2.5rem;
    font-weight: bold;
}

.score-label {
    font-size: 0.8rem;
    color: #666;
}

.evidence-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.evidence-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--danger-color);
}

.tag-list {
    list-style: none;
    margin-top: 10px;
}

.tag-list li {
    display: inline-block;
    background: #ffebee;
    color: #c0392b;
    padding: 4px 8px;
    border-radius: 4px;
    margin: 2px;
    font-size: 0.9rem;
    font-weight: 600;
}

@media (max-width: 600px) {
    .evidence-grid {
        grid-template-columns: 1fr;
    }
}