/* NSBM Professional Enrollment Form Styles */
:root {
    --nsbm-primary: #ffffff;
    --nsbm-secondary: #0066cc;
    --nsbm-accent: #2B8132;
    --nsbm-light-blue: #e6f3ff;
    --nsbm-light-green: #e8f5e8;
    --nsbm-dark-blue: #004499;
    --nsbm-dark-green: #1B5E20;
    --nsbm-text-dark: #333333;
    --nsbm-text-light: #666666;
    --nsbm-border: #e0e0e0;
    --nsbm-shadow: rgba(0, 102, 204, 0.1);
    --nsbm-gradient: linear-gradient(135deg, #f8fbff 0%, #e6f3ff 50%, #e8f5e8 100%);
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--nsbm-gradient);
    min-height: 100vh;
    color: var(--nsbm-text-dark);
    line-height: 1.6;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--nsbm-secondary) 0%, var(--nsbm-dark-blue) 100%);
    color: var(--nsbm-primary);
    padding: 2rem 0;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 102, 204, 0.15);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    width: 60px;
    height: 60px;
    background: var(--nsbm-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.header-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.university-info h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.025em;
}

.university-info p {
    margin: 0.25rem 0 0 0;
    opacity: 0.9;
    font-size: 1rem;
    font-weight: 400;
}

.back-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--nsbm-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--nsbm-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.enrollment-title {
    text-align: center;
}

.enrollment-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.025em;
}

.enrollment-title p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin: 0;
}

/* Main Container */
.main-container {
    max-width: 900px;
    margin: 1rem auto 2rem auto;
    padding: 0 2rem;
    position: relative;
    z-index: 10;
}

/* Form Card */
.enrollment-card {
    background: var(--nsbm-primary);
    border-radius: 24px;
    box-shadow: 
        0 24px 48px rgba(0, 102, 204, 0.08),
        0 12px 24px rgba(0, 102, 204, 0.04);
    overflow: hidden;
    border: 1px solid rgba(0, 102, 204, 0.1);
    animation: slideUp 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.card-header {
    background: linear-gradient(135deg, var(--nsbm-accent) 0%, var(--nsbm-dark-green) 100%);
    color: var(--nsbm-primary);
    padding: 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="10" height="10" patternUnits="userSpaceOnUse"><circle cx="5" cy="5" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.card-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    position: relative;
    z-index: 2;
}

.card-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 1rem;
    position: relative;
    z-index: 2;
}

.card-body {
    padding: 3rem;
}

/* Form Styles */
.form-section {
    margin-bottom: 2.5rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--nsbm-text-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--nsbm-light-blue);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title i {
    color: var(--nsbm-secondary);
    font-size: 1.1rem;
}

.form-row {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-row.two-columns {
    grid-template-columns: 1fr 1fr;
}

.form-row.three-columns {
    grid-template-columns: 1fr 1fr 1fr;
}

.form-group {
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--nsbm-text-dark);
    font-size: 0.9rem;
}

.form-label .required {
    color: #dc3545;
    margin-left: 0.25rem;
}

.form-control, .form-select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--nsbm-border);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    background: var(--nsbm-primary);
    color: var(--nsbm-text-dark);
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--nsbm-secondary);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: var(--nsbm-text-light);
}

.form-select {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="none" stroke="%23666" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="m1 6 7 7 7-7"/></svg>');
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px;
    padding-right: 3rem;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* Button Styles */
.btn-submit {
    background: linear-gradient(135deg, var(--nsbm-secondary) 0%, var(--nsbm-dark-blue) 100%);
    border: none;
    border-radius: 12px;
    color: var(--nsbm-primary);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 1.25rem 3rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.25);
    position: relative;
    overflow: hidden;
    display: block;
    margin: 0 auto;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 102, 204, 0.35);
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:active {
    transform: translateY(-1px);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Loading state */
.loading {
    display: none;
}

.btn-submit:disabled .loading {
    display: inline;
}

.btn-submit:disabled .normal {
    display: none;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 3rem;
    display: none;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--nsbm-light-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem auto;
    color: var(--nsbm-accent);
    font-size: 2rem;
}

.success-message h3 {
    color: var(--nsbm-accent);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.success-message p {
    color: var(--nsbm-text-light);
    font-size: 1rem;
    line-height: 1.6;
}

/* Alert Styles */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: none;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.alert-success {
    background: var(--nsbm-light-green);
    color: var(--nsbm-dark-green);
    border-left: 4px solid var(--nsbm-accent);
}

.alert-danger {
    background: #fde8e8;
    color: #a53535;
    border-left: 4px solid #dc3545;
}

/* Admin Login Link */
.admin-link {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--nsbm-secondary);
    color: var(--nsbm-primary);
    padding: 1rem;
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.25rem;
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.25);
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 1000;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-link:hover {
    background: var(--nsbm-dark-blue);
    color: var(--nsbm-primary);
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 12px 32px rgba(0, 102, 204, 0.35);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .header-top {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .enrollment-title h2 {
        font-size: 2rem;
    }
    
    .main-container {
        padding: 0 1rem;
        margin-top: -2rem;
    }
    
    .card-body {
        padding: 2rem 1.5rem;
    }
    
    .form-row.two-columns,
    .form-row.three-columns {
        grid-template-columns: 1fr;
    }
    
    .btn-submit {
        width: 100%;
        padding: 1rem 2rem;
    }
    
    .admin-link {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1.5rem 0;
    }
    
    .university-info h1 {
        font-size: 1.5rem;
    }
    
    .enrollment-title h2 {
        font-size: 1.75rem;
    }
    
    .enrollment-card {
        border-radius: 16px;
        margin: 0 0.5rem;
    }
    
    .card-header {
        padding: 1.5rem;
    }
    
    .card-body {
        padding: 1.5rem 1rem;
    }
    
    .form-control, .form-select {
        padding: 0.875rem;
    }
}

/* Focus indicators for accessibility */
.form-control:focus,
.form-select:focus,
.btn-submit:focus,
.back-btn:focus,
.admin-link:focus {
    outline: 2px solid var(--nsbm-secondary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-control,
    .form-select {
        border-width: 3px;
    }
    
    .btn-submit {
        border: 2px solid var(--nsbm-dark-blue);
    }
}