/* CSS Custom Properties for Easy Rebranding */
:root {
    /* Prospak Secondary Color Scheme */
    --primary-light-blue: #6D8BF5;
    --primary-dark-blue: #000C72;
    --dark-gray: #384650;
    --white: #FFFFFF;
    --gray-bg: #333C44;
    --light-gray: #E9ECEF;
    
    /* Additional Colors */
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --background-light: #f8f9fa;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    --font-size-hero: 48px;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-height: 70px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

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

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    z-index: 1000;
    height: var(--header-height);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

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

.logo img {
    height: 40px;
    width: auto;
}

.school-name {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--primary-dark-blue);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-light-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light-blue);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.slideshow-container {
    position: relative;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.slide.active {
    opacity: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    z-index: 2;
    max-width: 800px;
    padding: 0 var(--spacing-sm);
}

.slide-content::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    right: -50px;
    bottom: -50px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--border-radius-lg);
    z-index: -1;
}

.slide-content h1 {
    font-size: var(--font-size-hero);
    margin-bottom: var(--spacing-sm);
    font-weight: bold;
}

.slide-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
}

.cta-button {
    display: inline-block;
    background: var(--primary-light-blue);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: bold;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
}

.cta-button:hover {
    background: var(--primary-dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-dark);
}

/* Slide Navigation */
.slide-navigation {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.dot.active,
.dot:hover {
    background: var(--white);
}

/* Slide Controls */
.slide-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    z-index: 3;
}

.prev,
.next {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: none;
    padding: var(--spacing-sm);
    font-size: var(--font-size-xl);
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: background var(--transition-fast);
}

.prev:hover,
.next:hover {
    background: rgba(255, 255, 255, 0.4);
}

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

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

.section-header h2 {
    font-size: var(--font-size-xxl);
    color: var(--primary-dark-blue);
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px var(--shadow);
}

.about-text h3 {
    color: var(--primary-dark-blue);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.about-text ul {
    list-style: none;
    padding-left: 0;
}

.about-text li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.about-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-light-blue);
    font-weight: bold;
}

/* Academics Section */
.academics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.academic-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 15px var(--shadow);
    text-align: center;
    transition: transform var(--transition-fast);
}

.academic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow-dark);
}

.card-icon {
    font-size: var(--font-size-hero);
    margin-bottom: var(--spacing-sm);
}

.academic-card h3 {
    color: var(--primary-dark-blue);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.academic-card p {
    color: var(--text-light);
}

/* Facilities Section */
.facilities {
    background: var(--background-light);
}

.facilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.facility-item {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    height: 250px;
    cursor: pointer;
}

.facility-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.facility-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: var(--spacing-lg);
    transform: translateY(50%);
    transition: transform var(--transition-normal);
}

.facility-item:hover .facility-overlay {
    transform: translateY(0);
}

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

.facility-overlay h3 {
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-xl);
}

/* Gallery Section */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.gallery-item:hover {
    transform: scale(1.05);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    cursor: pointer;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    margin: 5% auto;
    cursor: default;
}

.lightbox-content img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

.close {
    position: absolute;
    top: 15px;
    right: 25px;
    color: var(--white);
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
}

/* Contact Section */
.contact {
    background: var(--background-light);
}

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

.contact-info h3 {
    color: var(--primary-dark-blue);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

.info-item {
    margin-bottom: var(--spacing-lg);
}

.info-item strong {
    color: var(--primary-dark-blue);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.contact-form {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 5px 15px var(--shadow);
}

/* Alert Messages */
.alert {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert ul {
    margin: 0;
    padding-left: var(--spacing-md);
}

.alert li {
    margin-bottom: var(--spacing-xs);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-dark-blue);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

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

.submit-btn {
    background: var(--primary-light-blue);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-lg);
    font-weight: bold;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
}

.submit-btn:hover {
    background: var(--primary-dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-dark);
}

.submit-btn:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Footer */
.footer {
    background: var(--primary-dark-blue);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

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

.footer-logo img {
    height: 40px;
    width: auto;
}

.footer-logo span {
    font-size: var(--font-size-xl);
    font-weight: bold;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light-blue);
}

.social-media {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

.social-media a {
    color: var(--white);
    text-decoration: none;
    font-size: var(--font-size-xl);
    transition: transform var(--transition-fast);
}

.social-media a:hover {
    transform: scale(1.2);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-to-top {
    color: var(--white);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.back-to-top:hover {
    color: var(--primary-light-blue);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    :root {
        --font-size-hero: 32px;
        --font-size-xxl: 24px;
        --font-size-xl: 20px;
        --spacing-xxl: 48px;
        --spacing-xl: 32px;
    }

    .nav-list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-xl);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        box-shadow: 0 2px 10px var(--shadow);
    }

    .nav-list.active {
        transform: translateX(0);
    }

    .hamburger {
        display: flex;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }

    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }

    .social-media {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .slide-controls {
        display: none;
    }

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

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

    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }

    .slide-content {
        padding: 0 var(--spacing-xs);
    }

    .slide-content h1 {
        font-size: 24px;
    }

    .slide-content p {
        font-size: var(--font-size-base);
    }

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