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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

h1, h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

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

.btn {
    display: block;
    padding: 15px 30px;
    text-decoration: none;
    text-align: center;
    border-radius: 8px;
    font-weight: bold;
    transition: transform 0.2s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-secondary {
    background: #6b7280;
    color: white;
    margin-top: 20px;
}

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

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input {
    padding: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 16px;
}

input:focus {
    outline: none;
    border-color: #667eea;
}

video {
    width: 100%;
    border-radius: 8px;
    background: #000;
}

#result {
    margin-top: 20px;
}

.success {
    background: #d1fae5;
    color: #065f46;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #10b981;
}

.error {
    background: #fee2e2;
    color: #991b1b;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #ef4444;
}

.loading {
    background: #dbeafe;
    color: #1e40af;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
}

.success-box {
    background: #d1fae5;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #10b981;
}

.success-box h3 {
    color: #065f46;
    margin-bottom: 15px;
}

.success-box p {
    color: #047857;
    margin: 8px 0;
    font-size: 16px;
}

.timestamp {
    margin-top: 15px;
    font-weight: bold;
    color: #059669 !important;
}