:root {
    --primary-color: #003366;
    --secondary-color: #f8f9fa;
    --accent-color: #4CAF50;
}

body {
    font-family: 'Manrope', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

.header {
    background: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--primary-color);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    background: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-item {
    padding: 10px 15px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-item:hover {
    background: rgba(0, 51, 102, 0.1);
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
}

.main-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 40px 20px;
}

.register-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.card-header {
    background: var(--primary-color);
    color: white;
    padding: 30px;
    text-align: center;
}

.card-body {
    padding: 30px;
}

.form-section {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: 25px;
    border-bottom: 2px solid #f3f4f6;
    padding-bottom: 15px;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-description {
    color: #6b7280;
    margin-top: 5px;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #374151;
}

.required {
    color: #ef4444;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.1);
}

.form-input.error, .form-select.error, .form-textarea.error {
    border-color: #ef4444;
}

.password-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    font-size: 16px;
}

.error-message {
    color: #ef4444;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.success-message {
    display: none;
    text-align: center;
    padding: 50px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.success-icon {
    font-size: 60px;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.register-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.register-btn:hover {
    background: #002244;
}

.register-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.login-link {
    text-align: center;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
    color: #6b7280;
    font-size: 14px;
}

.login-link a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.login-link a:hover {
    text-decoration: underline;
}

.terms-container {
    background: #f9fafb;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 15px;
    margin-top: 20px;
}

.terms-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 14px;
}

.terms-content {
    font-size: 12px;
    color: #6b7280;
    max-height: 100px;
    overflow-y: auto;
    padding-right: 10px;
}

.terms-content::-webkit-scrollbar {
    width: 6px;
}

.terms-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.terms-content::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

/* Responsive */
@media (max-width: 768px) {
    .main-container {
        padding: 20px 15px;
    }
    
    .card-body {
        padding: 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .nav-menu {
        display: none;
    }
}

#message {
    display: flex;
    align-items: center;
    justify-content: center;
    /* min-height: 400px; */
}

.success-box {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    max-width: 500px;
    width: 100%;
}

.success-box i {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
}

.error-box {
    background: linear-gradient(135deg, #d7d7d7 0%, #d7d7d7 100%);
    color: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    max-width: 500px;
    width: 100%;
}

.error-box i {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
}