/* Reset ve Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Renk Paleti - Bil Koleji Logosuna Uygun */
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --secondary-color: #e91e63;
    --accent-color: #10b981;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --background-light: #f9fafb;
    --background-white: #ffffff;
    --border-color: #e5e7eb;
    --error-color: #ef4444;
    --success-color: #22c55e;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
    --gradient-secondary: linear-gradient(135deg, #e91e63 0%, #c2185b 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-hero: linear-gradient(135deg, rgba(30, 64, 175, 0.95) 0%, rgba(30, 58, 138, 0.95) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
.header {
    background: var(--background-white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.logo-text h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
    margin: 0;
}

.logo-text .brand {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text .tagline {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    font-weight: 500;
    margin: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: color 0.3s ease;
    position: relative;
}

.nav a:hover {
    color: var(--primary-color);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav a:hover::after {
    width: 100%;
}

.cta-btn {
    background: var(--gradient-primary) !important;
    color: white !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: none;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-btn::after {
    display: none;
}

/* Hero Section */
.hero {
    background: var(--gradient-hero);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="4"/></g></svg>') repeat;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h2 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-text h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.hero-text p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.hero-features {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.feature i {
    font-size: var(--font-size-lg);
    color: var(--secondary-color);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--gradient-secondary);
    color: white;
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
    width: 300px;
}

.hero-card h4 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
}

.time-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--background-light);
    border-radius: var(--radius-lg);
}

.time-info i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.time-info span {
    font-weight: 600;
    color: var(--text-dark);
    font-size: var(--font-size-lg);
}

.price-info {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-sm);
}

.price {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary-color);
}

.currency {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
}

.per {
    font-size: var(--font-size-base);
    color: var(--text-light);
}

/* Section Styles */
section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    text-align: center;
    color: var(--text-light);
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Program Section */
.program-section {
    background: var(--background-light);
}

.program-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.program-card {
    background: var(--background-white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.program-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    padding: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.academic .card-header {
    background: var(--gradient-primary);
}

.arts .card-header {
    background: var(--gradient-accent);
}

.card-header i {
    font-size: var(--font-size-3xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
}

.card-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.card-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.card-content {
    padding: var(--spacing-2xl);
}

.card-content p {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-base);
}

.subject-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.subject-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-dark);
    font-weight: 500;
}

.subject-list i {
    color: var(--accent-color);
    font-size: var(--font-size-sm);
}

.arts-categories {
    display: grid;
    gap: var(--spacing-lg);
}

.category h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.category i {
    color: var(--accent-color);
}

.category span {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    font-weight: normal;
}

/* Academic Levels Styles */
.academic-levels {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.level-section {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.level-section h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.level-section i {
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.level-subjects {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.level-subjects span {
    background: var(--background-white);
    color: var(--text-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.level-subjects span:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Advantages Section */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
}

.advantage-card {
    background: var(--background-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.advantage-icon i {
    font-size: var(--font-size-2xl);
    color: white;
}


.advantage-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.advantage-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Pricing Section */
.pricing-section {
    background: var(--background-light);
}

.pricing-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--background-white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.pricing-header {
    background: var(--gradient-primary);
    padding: var(--spacing-2xl);
    text-align: center;
    color: white;
}

.pricing-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-sm);
}

.amount {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: white;
}

.currency {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: white;
}

.period {
    font-size: var(--font-size-lg);
    color: white;
    opacity: 1;
}

.pricing-content {
    padding: var(--spacing-2xl);
}

.pricing-features {
    margin-bottom: var(--spacing-2xl);
}

.pricing-features .feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.pricing-features i {
    color: var(--accent-color);
    font-size: var(--font-size-lg);
}

.pricing-note {
    background: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--secondary-color);
}

.pricing-note p {
    color: var(--text-light);
    margin: 0;
    font-size: var(--font-size-sm);
}

.pricing-note i {
    color: var(--secondary-color);
    margin-right: var(--spacing-xs);
}

/* Application Form */
.application-section {
    background: var(--background-light);
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.form-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.form-header p {
    font-size: var(--font-size-lg);
    color: var(--text-light);
}

.application-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--background-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-lg);
}

.form-section {
    margin-bottom: var(--spacing-3xl);
}

.form-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.form-section i {
    color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    background: var(--background-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.participation-choice {
    display: flex;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-lg);
}

.radio-label,
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 500;
    color: var(--text-dark);
    transition: color 0.3s ease;
}

.radio-label:hover,
.checkbox-label:hover {
    color: var(--primary-color);
}

.radio-custom,
.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-custom {
    border-radius: var(--radius-sm);
}

.radio-label input[type="radio"],
.checkbox-label input[type="checkbox"] {
    display: none;
}

.radio-label input[type="radio"]:checked + .radio-custom,
.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    border-color: var(--primary-color);
    background: var(--primary-color);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    color: white;
    font-size: 12px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: bold;
}

.program-category {
    background: var(--background-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.program-category h4 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.art-subcategory {
    margin-bottom: var(--spacing-xl);
}

.art-subcategory h5 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.form-submit {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--spacing-lg) var(--spacing-3xl);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.form-note {
    margin-top: var(--spacing-lg);
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.form-note i {
    color: var(--secondary-color);
    margin-right: var(--spacing-xs);
}

/* Contact Section */
.contact-section {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.contact-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 500;
}

.contact-item i {
    color: var(--secondary-color);
}

.contact-item a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--secondary-color);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-2xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-xs);
}

.footer-logo p {
    font-size: var(--font-size-sm);
}

.footer-info {
    text-align: right;
}

.footer-info p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .program-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        padding: var(--spacing-md) 0;
    }
    
    .nav {
        gap: var(--spacing-lg);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-text h2 {
        font-size: var(--font-size-3xl);
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
    
    .participation-choice {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .contact-info {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-info {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-text h2 {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .application-form {
        padding: var(--spacing-xl);
    }
    
    .hero-card {
        width: 100%;
        max-width: 280px;
    }
}

/* Loading Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Success Message */
.success-message {
    background: var(--success-color);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    display: none;
    text-align: center;
    font-weight: 500;
}

.success-message.show {
    display: block;
    animation: fadeInUp 0.5s ease;
}

/* Form Validation Styles */
.form-group input.error,
.form-group select.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
    color: var(--error-color);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    display: none;
}

.error-message.show {
    display: block;
}

/* Enhanced Mobile Menu */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background-color: var(--background-light);
    color: var(--primary-color);
}

/* Mobile Navigation Improvements */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background-white);
        box-shadow: var(--shadow-xl);
        flex-direction: column;
        padding: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        border-top: 1px solid var(--border-color);
    }
    
    .nav.mobile-menu-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav a {
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--border-color);
        text-align: center;
        font-size: var(--font-size-lg);
        width: 100%;
        border-radius: var(--radius-md);
        transition: all 0.3s ease;
    }
    
    .nav a:hover {
        background-color: var(--background-light);
        color: var(--primary-color);
    }
    
    .nav a:last-child {
        border-bottom: none;
    }
    
    .cta-btn {
        margin-top: var(--spacing-md) !important;
        padding: var(--spacing-md) var(--spacing-xl) !important;
        text-align: center;
        display: block !important;
        width: 100% !important;
        box-sizing: border-box;
    }
}

/* Tablet Optimizations */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-card {
        max-width: 350px;
        margin: 0 auto;
    }
    
    .program-grid {
        gap: var(--spacing-xl);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .application-form {
        padding: var(--spacing-2xl);
    }
}

/* Extra Small Mobile Devices */
@media (max-width: 480px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.25rem;
        --spacing-2xl: 1.5rem;
        --spacing-3xl: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero-text h2 {
        font-size: var(--font-size-2xl);
        line-height: 1.3;
    }
    
    .hero-text h3 {
        font-size: var(--font-size-lg);
    }
    
    .hero-text p {
        font-size: var(--font-size-base);
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    
    .hero-card {
        padding: var(--spacing-lg);
        margin: 0 auto;
        width: 100%;
        max-width: 280px;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
        line-height: 1.3;
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-2xl);
    }
    
    .program-card,
    .advantage-card {
        margin-bottom: var(--spacing-lg);
    }
    
    .card-header {
        padding: var(--spacing-lg);
    }
    
    .card-content {
        padding: var(--spacing-lg);
    }
    
    .application-form {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-sm);
    }
    
    .form-section h3 {
        font-size: var(--font-size-lg);
    }
    
    .program-category {
        padding: var(--spacing-lg);
    }
    
    .contact-info {
        gap: var(--spacing-md);
    }
    
    .contact-item {
        font-size: var(--font-size-base);
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
    
    .pricing-card {
        margin: 0 var(--spacing-sm);
    }
    
    .pricing-header {
        padding: var(--spacing-lg);
    }
    
    .pricing-content {
        padding: var(--spacing-lg);
    }
}

/* Ultra Small Devices (320px) */
@media (max-width: 320px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-text h2 {
        font-size: var(--font-size-xl);
    }
    
    .application-form {
        margin: 0;
        border-radius: var(--radius-lg);
    }
    
    .hero-card {
        max-width: 260px;
        padding: var(--spacing-md);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Disable hover effects for touch devices */
    .program-card:hover,
    .advantage-card:hover {
        transform: none;
        box-shadow: var(--shadow-lg);
        border-color: transparent;
    }
    
    .hero-cta:hover,
    .cta-btn:hover,
    .submit-btn:hover {
        transform: none;
        box-shadow: var(--shadow-lg);
    }
    
    .nav a::after {
        display: none;
    }
    
    .nav a:hover {
        color: var(--text-dark);
    }
    
    /* Larger touch targets */
    .checkbox-label,
    .radio-label {
        padding: var(--spacing-sm);
        margin: var(--spacing-xs) 0;
        border-radius: var(--radius-sm);
        min-height: 44px;
        align-items: center;
    }
    
    .checkbox-label:active,
    .radio-label:active {
        background-color: var(--background-light);
    }
    
    .submit-btn,
    .hero-cta,
    .cta-btn {
        min-height: 48px;
        min-width: 120px;
        touch-action: manipulation;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        min-height: 48px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Better button spacing for touch */
    .participation-choice {
        gap: var(--spacing-lg);
    }
    
    .participation-choice .radio-label {
        padding: var(--spacing-md);
        background: var(--background-light);
        border-radius: var(--radius-lg);
        border: 2px solid transparent;
        transition: all 0.3s ease;
    }
    
    .participation-choice .radio-label:active {
        border-color: var(--primary-color);
        background: rgba(30, 64, 175, 0.1);
    }
}

/* High DPI/Retina Display Support */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-bg {
        background-size: 30px 30px;
    }
    
    /* Crisp borders and shadows */
    .program-card,
    .advantage-card,
    .application-form,
    .pricing-card {
        box-shadow: var(--shadow-lg);
    }
}

/* Landscape Mode for Mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero-content {
        grid-template-columns: 1fr 300px;
        gap: var(--spacing-xl);
        text-align: left;
    }
    
    .hero-card {
        width: 280px;
        max-width: none;
    }
    
    .hero-features {
        flex-direction: row;
        gap: var(--spacing-lg);
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .fade-in-up {
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .hero-bg {
        animation: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-dark: #f9fafb;
        --text-light: #d1d5db;
        --background-light: #1f2937;
        --background-white: #111827;
        --border-color: #374151;
    }
    
    .header {
        background: var(--background-white);
        border-bottom: 1px solid var(--border-color);
    }
    
    .program-card,
    .advantage-card,
    .application-form,
    .pricing-card {
        background: var(--background-white);
        border: 1px solid var(--border-color);
    }
    
    .hero-card {
        background: rgba(17, 24, 39, 0.95);
        border: 1px solid var(--border-color);
    }
    
    .success-message {
        background: #065f46;
        border: 1px solid #047857;
    }
}

/* Print Styles */
@media print {
    .header,
    .hero,
    .contact-section,
    .footer {
        display: none;
    }
    
    .application-form {
        box-shadow: none;
        border: 2px solid #000;
        break-inside: avoid;
    }
    
    .program-card,
    .advantage-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
        margin-bottom: var(--spacing-lg);
    }
    
    .section-title {
        break-after: avoid;
        color: #000 !important;
    }
    
    * {
        background: white !important;
        color: black !important;
    }
    
    .card-header.academic,
    .card-header.arts,
    .pricing-header,
    .contact-section {
        background: #333 !important;
        color: white !important;
    }
    
    .submit-btn {
        display: none;
    }
    
    .form-note {
        font-weight: bold;
        border: 1px solid #000;
        padding: 10px;
    }
}

/* Focus Styles for Better Accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.2);
}

.nav a:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* Screen Reader Only Text */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading States */
.loading {
    position: relative;
    color: transparent;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Better Form Field States */
.form-group input:invalid:not(:focus):not(:placeholder-shown) {
    border-color: var(--error-color);
}

.form-group input:valid:not(:focus):not(:placeholder-shown) {
    border-color: var(--success-color);
}

/* Smooth scrolling for older browsers */
@supports not (scroll-behavior: smooth) {
    html {
        scroll-behavior: auto;
    }
}

/* Better spacing for very wide screens */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-content {
        grid-template-columns: 1fr 450px;
        gap: var(--spacing-3xl);
    }
    
    .program-grid {
        gap: var(--spacing-3xl);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-2xl);
    }
}

/* Performance optimizations */
.program-card,
.advantage-card {
    will-change: transform;
}

.hero-bg {
    will-change: transform;
}

/* Ensure proper stacking contexts */
.header {
    z-index: 1000;
}

.nav.mobile-menu-open {
    z-index: 999;
}

.hero {
    z-index: 1;
}