:root {
    --color-good: #ff69b4;
    --color-bad: #ff1493;
    --color-neutral: #ffc0cb;
    --color-bg: #2d1b3d;
    --color-card: #4a2c5a;
    --color-text: #ffffff;
    --color-muted: #d8bfd8;
    --color-accent: #da70d6;
    --color-gradient-start: #ff69b4;
    --color-gradient-end: #da70d6;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #2d1b3d 0%, #4a2c5a 50%, #6b4b7d 100%);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

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

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(45deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 105, 180, 0.3);
}

.header p {
    color: var(--color-muted);
    font-size: 1.1rem;
}

.main-container {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    flex-wrap: wrap;
    justify-content: center;
}

.camera-section {
    background: linear-gradient(145deg, var(--color-card), #5a3a6a);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(255, 105, 180, 0.2);
    text-align: center;
    border: 1px solid rgba(255, 105, 180, 0.3);
}

.controls {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    justify-content: center;
}

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(45deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 105, 180, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 105, 180, 0.6);
}

.btn-secondary {
    background: linear-gradient(45deg, var(--color-accent), #ba55d3);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(45deg, #ba55d3, #9370db);
    transform: translateY(-2px);
}

.sound-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.sound-toggle:hover {
    background: rgba(255, 105, 180, 0.2);
}

#canvas {
    border: 3px solid var(--color-gradient-start);
    border-radius: 15px;
    width: 400px;
    height: 400px;
    background: #000;
    box-shadow: 0 0 20px rgba(255, 105, 180, 0.3);
}

.stats-section {
    background: linear-gradient(145deg, var(--color-card), #5a3a6a);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(255, 105, 180, 0.2);
    min-width: 300px;
    border: 1px solid rgba(255, 105, 180, 0.3);
}

.stat-card {
    background: rgba(255, 105, 180, 0.1);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    text-align: center;
    border: 1px solid rgba(255, 105, 180, 0.2);
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.good-posture { 
    color: var(--color-good);
    text-shadow: 0 0 10px rgba(255, 105, 180, 0.5);
}

.bad-posture { 
    color: var(--color-bad);
    text-shadow: 0 0 10px rgba(255, 20, 147, 0.5);
}

.alerts { 
    color: var(--color-neutral);
    text-shadow: 0 0 10px rgba(255, 192, 203, 0.5);
}

.total { 
    color: var(--color-accent);
    text-shadow: 0 0 10px rgba(218, 112, 214, 0.5);
}

.stat-label {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.posture-status {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 20px 0;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.status-good {
    background: rgba(255, 105, 180, 0.2);
    color: var(--color-good);
    border: 2px solid var(--color-good);
    box-shadow: 0 0 15px rgba(255, 105, 180, 0.3);
}

.status-bad {
    background: rgba(255, 20, 147, 0.2);
    color: var(--color-bad);
    border: 2px solid var(--color-bad);
    box-shadow: 0 0 15px rgba(255, 20, 147, 0.3);
}

.status-neutral {
    background: rgba(255, 192, 203, 0.2);
    color: var(--color-neutral);
    border: 2px solid var(--color-neutral);
    box-shadow: 0 0 15px rgba(255, 192, 203, 0.3);
}

.predictions {
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.loading {
    display: none;
    text-align: center;
    margin: 20px 0;
}

.loading i {
    font-size: 2rem;
    color: var(--color-gradient-start);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-bar {
    background: rgba(255, 105, 180, 0.1);
    border-radius: 10px;
    height: 8px;
    margin: 10px 0;
    overflow: hidden;
    border: 1px solid rgba(255, 105, 180, 0.2);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(45deg, var(--color-gradient-start), var(--color-gradient-end));
    transition: width 0.3s ease;
    border-radius: 10px;
    width: 0%;
    box-shadow: 0 0 10px rgba(255, 105, 180, 0.5);
}

@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
        align-items: center;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    #canvas {
        width: 300px;
        height: 300px;
    }
}