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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.hero-section {
    text-align: center;
    padding: 40px 0;
    color: white;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

.camera-section, .upload-section {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    text-align: center;
    width: 100%;
    max-width: 500px;
}

.camera-container {
    position: relative;
    margin: 20px 0;
}

#video {
    width: 100%;
    max-width: 400px;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    background: #f0f0f0;
}

.camera-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 400px;
    height: 300px;
}

.face-guide {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 250px;
    border: 3px dashed rgba(255,255,255,0.6);
    border-radius: 100px;
    pointer-events: none;
}

.capture-btn {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.capture-btn:hover {
    transform: translateX(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

.capture-btn span {
    font-size: 30px;
}

.upload-btn {
    display: inline-block;
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.upload-btn input {
    display: none;
}

.analysis-section {
    text-align: center;
    color: white;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255,255,255,0.3);
    border-top: 5px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

.results-section {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    max-width: 800px;
    width: 100%;
}

.results-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.photo-display {
    position: relative;
    grid-column: 1 / -1;
    text-align: center;
}

#resultImage {
    max-width: 100%;
    max-height: 400px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

#overlayCanvas {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
    border-radius: 15px;
}

.overall-score {
    text-align: center;
    padding: 20px;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto;
    color: white;
    font-size: 2.5rem;
    font-weight: bold;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.feature-scores {
    padding: 20px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.feature-score {
    font-weight: bold;
    color: #667eea;
}

.ai-feedback {
    grid-column: 1 / -1;
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
}

.try-again-btn {
    grid-column: 1 / -1;
    padding: 15px 40px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 20px auto;
    display: block;
}

.try-again-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
    .main-title {
        font-size: 2.5rem;
    }
    
    .results-container {
        grid-template-columns: 1fr;
    }
}