/* ===== CSS RESET & BASE STYLES ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Official Vanderbilt Brand Colors */
    --gold-primary: #CFAE70;      /* Flat Gold - Pantone 4024 C */
    --gold-metallic: #B49248;     /* Metallic Gold end */
    --gold-light: #FEEEB6;        /* Metallic Gold start */
    --black: #1C1C1C;             /* Pantone Black C */
    --white: #FFFFFF;
    --off-white: #F5F5F0;
    --gray-light: #E8E3DB;
    --gray-medium: #666666;       /* WCAG AA compliant on white */
    --gray-dark: #333333;         /* WCAG AAA compliant on white */

    /* Typography */
    --font-primary: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --section-padding: 80px;
    --container-max: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-medium);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background-color: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--gray-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--gold-primary);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--gold-metallic);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--black);
    border: 2px solid var(--black);
}

.btn-outline:hover {
    background-color: var(--black);
    color: var(--white);
}

/* ===== PAGE HEADER ===== */
.page-header {
    padding: 160px 24px 80px;
    background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 50%, var(--gold-metallic) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(207, 174, 112, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(134, 109, 75, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.page-header h1 {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 400;
    color: var(--black);
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 1.25rem;
    color: var(--gray-dark);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--off-white);
    border-bottom: 1px solid var(--gray-light);
}

.header-top {
    background-color: var(--off-white);
    padding: 8px 0;
}

.header-top .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.vanderbilt-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gold-primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.vanderbilt-logo svg {
    width: 40px;
    height: 40px;
}

.vu-logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.agi-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 4px;
    transition: opacity var(--transition-fast);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--black);
}

.agi-logo:hover {
    opacity: 0.85;
}

.agi-logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.header-main {
    background-color: var(--white);
    padding: 12px 0;
    border-top: 1px solid var(--gray-light);
}

.header-main .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--black);
}

.site-subtitle {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--gold-primary);
    font-style: italic;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-dark);
    transition: color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--gold-primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--black);
    margin: 6px 0;
    transition: var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 160px 24px 100px;
    background: var(--white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(207, 174, 112, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(134, 109, 75, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 100, 100, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--gold-primary);
    color: var(--black);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 24px;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 400;
    color: var(--black);
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero h1 span {
    color: var(--gold-metallic);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-dark);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--gray-light);
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--gold-metallic);
}

.hero-stat-label {
    font-size: 0.9rem;
    color: var(--gray-medium);
    max-width: 140px;
}

/* ===== VALUE PROPOSITION ===== */
.value-prop {
    padding: var(--section-padding) 0;
    background-color: var(--white);
}

.value-prop-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 48px;
}

.value-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: 8px;
    background-color: var(--off-white);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gold-primary);
    border-radius: 50%;
}

.value-icon svg {
    width: 32px;
    height: 32px;
    fill: var(--white);
}

.value-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--black);
}

.value-card p {
    font-size: 0.95rem;
    color: var(--gray-medium);
    line-height: 1.6;
}

/* ===== PROGRAM OVERVIEW ===== */
.program-overview {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.program-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.program-stat {
    text-align: center;
    padding: 32px 16px;
    background-color: var(--white);
    border-radius: 8px;
    border-left: 4px solid var(--gold-primary);
}

.program-stat-value {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--gold-primary);
    margin-bottom: 8px;
}

.program-stat-label {
    font-size: 0.9rem;
    color: var(--gray-dark);
}

.program-description {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.program-description p {
    font-size: 1.125rem;
    color: var(--gray-dark);
    margin-bottom: 24px;
    line-height: 1.8;
}

/* ===== CURRICULUM ===== */
.curriculum {
    padding: var(--section-padding) 0;
    background-color: var(--white);
}

.curriculum-phases {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.curriculum-phase {
    background-color: var(--off-white);
    border-radius: 12px;
    padding: 40px;
}

.phase-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.phase-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gold-primary);
    color: var(--white);
    font-weight: 700;
    font-size: 1.25rem;
    border-radius: 50%;
}

.phase-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--black);
}

.phase-duration {
    font-size: 0.9rem;
    color: var(--gray-medium);
    margin-left: auto;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.course-card {
    background-color: var(--white);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid var(--gray-light);
    transition: all var(--transition-medium);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    border-color: var(--gold-primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.course-number {
    display: inline-block;
    width: 28px;
    height: 28px;
    line-height: 28px;
    text-align: center;
    background-color: var(--gold-light);
    color: var(--white);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50%;
    margin-bottom: 12px;
}

.course-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 8px;
}

.course-card p {
    font-size: 0.9rem;
    color: var(--gray-medium);
    line-height: 1.6;
    flex-grow: 1;
}

.course-meta {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-light);
    font-size: 0.85rem;
    color: var(--gray-dark);
}

/* ===== FACULTY ===== */
.faculty {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.faculty-intro {
    max-width: 700px;
    margin: 0 auto 48px;
    text-align: center;
}

.faculty-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.faculty-card {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    text-align: center;
    transition: transform var(--transition-medium);
}

.faculty-card:hover {
    transform: translateY(-8px);
}

.faculty-image {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, var(--gray-light) 0%, var(--gray-medium) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.faculty-image svg {
    width: 80px;
    height: 80px;
    fill: var(--white);
    opacity: 0.5;
}

.faculty-info {
    padding: 24px;
}

.faculty-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 4px;
}

.faculty-title {
    font-size: 0.9rem;
    color: var(--gold-primary);
    margin-bottom: 12px;
}

.faculty-bio {
    font-size: 0.9rem;
    color: var(--gray-medium);
    line-height: 1.6;
}

/* ===== PRICING ===== */
.pricing {
    padding: var(--section-padding) 0;
    background-color: var(--white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 48px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background-color: var(--off-white);
    border-radius: 12px;
    padding: 40px 32px;
    text-align: center;
    position: relative;
    border: 2px solid transparent;
    transition: all var(--transition-medium);
}

.pricing-card:hover {
    border-color: var(--gold-primary);
}

.pricing-card.featured {
    background-color: var(--black);
    color: var(--white);
}

.pricing-card.featured:hover {
    border-color: var(--gold-light);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--gold-primary);
    color: var(--white);
    padding: 6px 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
}

.pricing-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.pricing-card.featured h3 {
    color: var(--gold-light);
}

.pricing-description {
    font-size: 0.9rem;
    color: var(--gray-medium);
    margin-bottom: 24px;
}

.pricing-card.featured .pricing-description {
    color: rgba(255, 255, 255, 0.7);
}

.pricing-amount {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.pricing-card.featured .pricing-amount {
    color: var(--white);
}

.pricing-per {
    font-size: 0.9rem;
    color: var(--gray-medium);
    margin-bottom: 32px;
}

.pricing-card.featured .pricing-per {
    color: rgba(255, 255, 255, 0.7);
}

.pricing-features {
    text-align: left;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.pricing-features li::before {
    content: '✓';
    color: var(--gold-primary);
    font-weight: 600;
}

.pricing-card.featured .pricing-features li::before {
    color: var(--gold-light);
}

.pricing-card.featured .btn-primary {
    background-color: var(--gold-primary);
}

.pricing-card.featured .btn-primary:hover {
    background-color: var(--gold-light);
}

.pricing-note {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: 24px;
    background-color: var(--off-white);
    border-radius: 8px;
}

.pricing-note p {
    font-size: 0.95rem;
    color: var(--gray-dark);
}

/* ===== CALCULATOR ===== */
.calculator {
    padding: var(--section-padding) 0;
    background: var(--off-white);
    color: var(--black);
}

.calculator .section-title {
    color: var(--black);
}

.calculator .section-subtitle {
    color: var(--gray-dark);
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.calc-card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 40px 32px;
    text-align: center;
    border: 1px solid var(--gray-light);
}

.calc-rate {
    font-size: 1rem;
    color: var(--gold-metallic);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.calc-students {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.calc-label {
    font-size: 0.9rem;
    color: var(--gray-medium);
    margin-bottom: 24px;
}

.calc-revenue {
    padding-top: 24px;
    border-top: 1px solid var(--gray-light);
}

.calc-revenue-amount {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--gold-metallic);
    font-weight: 600;
}

.calc-revenue-label {
    font-size: 0.85rem;
    color: var(--gray-medium);
}

/* ===== APPLICATION PROCESS ===== */
.application {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.application-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.step {
    text-align: center;
    position: relative;
}

.step::after {
    content: '';
    position: absolute;
    top: 32px;
    right: -16px;
    width: calc(100% - 64px);
    height: 2px;
    background-color: var(--gold-light);
}

.step:last-child::after {
    display: none;
}

.step-number {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gold-primary);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    position: relative;
    z-index: 1;
}

.step h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--black);
}

.step p {
    font-size: 0.9rem;
    color: var(--gray-medium);
}

.application-cta {
    text-align: center;
    padding: 48px;
    background-color: var(--white);
    border-radius: 12px;
}

.application-cta h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 16px;
}

.application-cta p {
    font-size: 1.1rem;
    color: var(--gray-medium);
    margin-bottom: 32px;
}

/* ===== FAQ ===== */
.faq {
    padding: var(--section-padding) 0;
    background-color: var(--white);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--off-white);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    color: var(--black);
    text-align: left;
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--gray-light);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--gold-primary);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium);
}

.faq-answer-inner {
    padding: 0 24px 24px;
    font-size: 0.95rem;
    color: var(--gray-dark);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 12px;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 16px;
    left: 24px;
    font-family: var(--font-display);
    font-size: 4rem;
    color: var(--gold-light);
    line-height: 1;
    opacity: 0.5;
}

.testimonial-text {
    font-size: 1rem;
    color: var(--gray-dark);
    line-height: 1.7;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--gold-primary);
}

.testimonial-name {
    font-weight: 600;
    color: var(--black);
}

.testimonial-role {
    font-size: 0.85rem;
    color: var(--gray-medium);
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, var(--gold-metallic) 0%, var(--gold-primary) 100%);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--black);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--gray-dark);
    margin-bottom: 32px;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--off-white);
    padding: 60px 0 24px;
    border-top: 1px solid var(--gray-light);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo svg {
    width: 48px;
    height: 48px;
    fill: var(--gold-primary);
}

.footer-logo span {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--black);
}

.footer-description {
    font-size: 0.9rem;
    color: var(--gray-medium);
    line-height: 1.7;
}

.footer-nav h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--black);
    margin-bottom: 20px;
}

.footer-nav ul li {
    margin-bottom: 12px;
}

.footer-nav a {
    font-size: 0.9rem;
    color: var(--gray-medium);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--gray-light);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--gray-medium);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--white);
    border-radius: 50%;
    color: var(--gray-dark);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background-color: var(--gold-primary);
    color: var(--white);
}

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 1024px) {
    .calculator-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .footer-main {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    :root {
        --section-padding: 60px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .value-prop-grid {
        grid-template-columns: 1fr;
    }

    .program-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .application-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .step::after {
        display: none;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-top: 1px solid var(--gray-light);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    }

    .main-nav.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 140px 24px 80px;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2.25rem;
    }

    .curriculum-phase {
        padding: 24px;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .application-steps {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .program-stats {
        grid-template-columns: 1fr;
    }

    .faculty-grid {
        grid-template-columns: 1fr;
    }
}

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

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

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* ===== APPLICATION FORM ===== */
.application-form-section {
    padding: var(--section-padding) 0;
    background-color: var(--off-white);
}

.application-form-section .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 48px;
    max-width: 1200px;
}

.form-container {
    background-color: var(--white);
    padding: 48px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.application-form h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 32px;
    color: var(--black);
}

.form-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--gray-light);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gold-primary);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.required {
    color: #d32f2f;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--black);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    text-align: center;
    margin-top: 32px;
}

.btn-large {
    padding: 18px 48px;
    font-size: 1.1rem;
}

.form-message {
    margin-top: 24px;
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border: 2px solid #4caf50;
}

.form-message.error {
    background-color: #ffebee;
    color: #c62828;
    border: 2px solid #f44336;
}

.application-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.sidebar-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 20px;
}

.program-highlights {
    list-style: none;
}

.program-highlights li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-light);
    color: var(--gray-dark);
    font-size: 0.95rem;
}

.program-highlights li:last-child {
    border-bottom: none;
}

.program-highlights strong {
    color: var(--black);
    font-weight: 600;
}

.sidebar-card a {
    color: var(--gold-primary);
    text-decoration: underline;
}

@media (max-width: 900px) {
    .application-form-section .container {
        grid-template-columns: 1fr;
    }

    .form-container {
        padding: 32px 24px;
    }

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