/* Global Variables & Reset */
:root {
    --color-purple-primary: #753895;
    --color-purple-action: #3F51B5;
    --color-purple-light: #7164B5;
    --color-gold: #F1C40F;
    --color-midnight-blue: #20356B;
    --color-dark-blue: #012e6f;
    --color-white: #FFFFFF;
    --color-off-white: #F9F9F9;
    --color-text-dark: #333333;
    --color-text-light: #666666;
    
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Poppins', sans-serif;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-hover: 0 20px 25px rgba(0,0,0,0.15);
    
    --transition: all 0.3s ease;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-off-white);
    color: var(--color-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 100px 0;
}

.text-center { text-align: center; }
.text-purple { color: var(--color-purple-primary); }
.text-gold { color: var(--color-gold); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-purple-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--color-white);
    color: var(--color-white);
}

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

.btn-accent {
    background-color: var(--color-gold);
    color: var(--color-midnight-blue);
}

.btn-accent:hover {
    background-color: #d4ac0d;
    transform: translateY(-2px);
}

.nav-btn {
    padding: 8px 20px !important;
    font-size: 0.9rem !important;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 50px;
}

.logo-text {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--color-purple-primary);
    line-height: 1.2;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--color-text-dark);
    position: relative;
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-purple-primary);
    transition: var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--color-purple-primary);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--color-purple-primary);
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    background: linear-gradient(rgba(32, 53, 107, 0.7), rgba(117, 56, 149, 0.6)), url('https://images.unsplash.com/photo-1541339907198-e08756dedf3f?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    color: var(--color-white);
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s forwards 0.5s;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

/* Stats Section */
.stats {
    background-color: var(--color-midnight-blue);
    color: var(--color-white);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-gold);
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 1.1rem;
    font-weight: 500;
}

/* About Section */
.about {
    background-color: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-img {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-img img {
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.about-img:hover img {
    transform: scale(1.05);
}

.about-content h2 {
    font-size: 2.5rem;
    color: var(--color-purple-primary);
    margin-bottom: 20px;
}

.about-content p {
    margin-bottom: 20px;
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* Programs/Features Section */
.programs {
    background-color: var(--color-off-white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--color-purple-primary);
    margin-bottom: 15px;
}

.section-header p {
    color: var(--color-text-light);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.program-card {
    background: var(--color-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    top: 0;
}

.program-card:hover {
    top: -10px;
    box-shadow: var(--shadow-hover);
}

.program-img {
    height: 200px;
    overflow: hidden;
}

.program-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.program-card:hover .program-img img {
    transform: scale(1.1);
}

.program-content {
    padding: 30px;
}

.program-content h3 {
    color: var(--color-midnight-blue);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.program-content p {
    color: var(--color-text-light);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.learn-more {
    color: var(--color-purple-action);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

.learn-more:hover {
    color: var(--color-purple-primary);
    gap: 10px;
}

/* Campus Life / Masonry-ish */
.campus-life {
    background-color: var(--color-white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 300px);
    gap: 10px;
    margin-top: 50px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    opacity: 0;
    transition: var(--transition);
    transform: translateY(20px);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
    transform: translateY(0);
}

/* Call to Action */
.cta-section {
    background: linear-gradient(135deg, var(--color-purple-primary), var(--color-midnight-blue));
    color: white;
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
footer {
    background-color: var(--color-midnight-blue);
    color: var(--color-white);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-info p {
    opacity: 0.7;
    margin-top: 20px;
    line-height: 1.8;
}

.footer-links h4 {
    color: var(--color-gold);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.footer-links ul li {
    margin-bottom: 15px;
}

.footer-links ul li a {
    opacity: 0.7;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    opacity: 1;
    color: var(--color-gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 968px) {
    .hero h1 { font-size: 3rem; }
    .about-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .item-large { grid-column: span 2; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links { 
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        text-align: center;
    }
    
    .nav-links.active {
        display: flex;
        animation: slideDown 0.3s ease forwards;
    }

    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 2.5rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .gallery-grid { display: flex; flex-direction: column; height: auto; }
    .gallery-item { height: 300px; }
    .footer-grid { grid-template-columns: 1fr; }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}