* {
    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: 500px;
    margin: 50px auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.header h1 {
    font-size: 28px;
    font-weight: 300;
    margin-bottom: 5px;
}

.header p {
    opacity: 0.9;
    font-size: 14px;
}

.form-container {
    padding: 40px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background-color: #f8f9fa;
}

.form-control:focus {
    outline: none;
    border-color: #4CAF50;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.captcha-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 8px;
}

.captcha-display {
    background: linear-gradient(45deg, #333, #555);
    color: white;
    padding: 15px 20px;
    font-size: 20px;
    font-weight: bold;
    letter-spacing: 4px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    min-width: 120px;
    text-align: center;
}

.captcha-input {
    flex: 1;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    width: 100%;
    padding: 15px;
    font-size: 16px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    color: white;
    font-size: 12px;
    padding: 8px 12px;
}

.btn-secondary:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(33, 150, 243, 0.3);
}

.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border-left: 4px solid #c62828;
}

.alert-error::before {
    content: "⚠️";
    font-size: 18px;
}

.result-card {
    background: linear-gradient(135deg, #e8f5e8 0%, #f1f8e9 100%);
    border-radius: 12px;
    padding: 25px;
    margin-top: 30px;
    border-left: 5px solid #4CAF50;
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.1);
}

.result-card h3 {
    color: #2e7d32;
    margin-bottom: 20px;
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.result-card h3::before {
    content: "✅";
    font-size: 22px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(76, 175, 80, 0.2);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    font-weight: 600;
    color: #555;
    min-width: 100px;
}

.result-value {
    font-weight: 500;
    color: #333;
    text-align: right;
}

.result-value.lulus {
    color: #2e7d32;
    font-weight: 600;
}

.result-value.tidak-lulus {
    color: #c62828;
    font-weight: 600;
}

.loading {
    display: none;
    text-align: center;
    padding: 20px;
    color: #666;
}

.loading.show {
    display: block;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4CAF50;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

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

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        margin: 20px auto;
        border-radius: 10px;
    }
    
    .form-container {
        padding: 30px 25px;
    }
    
    .captcha-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .captcha-display {
        text-align: center;
        min-width: auto;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .result-value {
        text-align: left;
    }
}

/* Animation */
.container {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}