/* 
 * Premium Upgrade CSS - St Thomas College Konni
 * Version: 2.0.0 "Level 150"
 * Description: High-performance, cinematic digital experience with Glassmorphism and Utility-First architecture.
 */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Core Technical Stack: Color Palette */
    --primary-navy: #001f7b;
    --primary-ocean: #2d82c5;
    --accent-gold: #c5a059;
    --accent-gold-light: #e6c88a;
    --white: #ffffff;
    --black: #0a0a0a;
    
    /* Layout Tokens */
    --section-padding: 8rem;
    --container-max: 1300px;
    
    /* Semantic Colors */
    --text-primary: #0a0a0a;
    --text-secondary: rgba(10, 10, 10, 0.7);
    --text-on-dark: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    
    /* Glassmorphism System - Elite Boutique */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-dark: rgba(0, 10, 30, 0.85);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(25px) saturate(180%);
    --glass-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
    --glass-glow: 0 0 20px rgba(197, 160, 89, 0.1);
    
    /* Animation & Transitions */
    --transition-premium: all 0.9s cubic-bezier(0.19, 1, 0.22, 1);
    --transition-fast: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: #f8fafc;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

/* Texture & Ambient Layers */
.grain-overlay {
    position: fixed;
    inset: -50%;
    z-index: 9999;
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    opacity: 0.05;
    pointer-events: none;
    animation: grain 8s steps(10) infinite;
}

@keyframes grain {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-5%, -10%); }
    30% { transform: translate(3%, -15%); }
    50% { transform: translate(12%, 9%); }
    70% { transform: translate(9%, 4%); }
    90% { transform: translate(-1%, 7%); }
}

.ambient-mesh {
    position: fixed;
    inset: 0;
    z-index: -2;
    background: 
        radial-gradient(circle at 0% 0%, rgba(45, 130, 197, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 100% 100%, rgba(197, 160, 89, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(0, 10, 30, 0.05) 0%, transparent 100%);
    filter: blur(80px);
}

/* Typography Utility */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    color: var(--accent-gold);
}

.text-gold-premium {
    background: linear-gradient(135deg, #e6c88a 0%, #c5a059 50%, #8a6e3d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Base Layout System */
.container-premium {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-premium {
    padding: var(--section-padding) 0;
}

/* [Utility-First] Custom Utility Classes */
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.grid-stack { display: grid; grid-template-columns: 1fr; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }

/* Spacing Utilities */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-10 { margin-top: 2.5rem; }
.mr-2 { margin-right: 0.5rem; }
.ml-1 { margin-left: 0.25rem; }

.text-navy { color: var(--primary-navy); }
.text-ocean { color: var(--primary-ocean); }
.text-gold { color: var(--accent-gold); }
.bg-navy { background-color: var(--primary-navy); }
.bg-ocean { background-color: var(--primary-ocean); }

/* High-Availability Navigation Visibility System */
.desktop-nav { 
    display: flex !important; 
}
.mobile-nav-toggle { 
    display: none !important; 
    flex-shrink: 0;
}

/* Institutional Breakpoint (1100px) */
@media (max-width: 1100px) {
    .desktop-nav { 
        display: none !important; 
    }
    .mobile-nav-toggle { 
        display: flex !important; 
    }
}

/* Mobile Real-Estate Optimization (600px) */
@media (max-width: 600px) {
    .nav-cta-btn { 
        display: none !important; 
    }
}

@media (max-width: 768px) {
    .hidden-mobile { display: none !important; }
}

/* 0. Mobile Navigation Toggle Styling */
.mobile-toggle {
    display: none; /* Controlled by lg:hidden above */
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: transparent;
    border: none;
    color: var(--primary-navy);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mobile-toggle:hover {
    color: var(--primary-ocean);
}

/* Cinematic Components */

/* 1. Glassmorphic Sticky Navigation */
.glass-nav {
    position: sticky;
    top: 0;
    z-index: 99999;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(0, 31, 123, 0.1);
    padding: 0.8rem 2.5rem;
    transition: var(--transition-premium);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.nav-link-premium {
    color: var(--primary-navy);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    transition: var(--transition-fast);
}

.nav-link-premium:hover {
    color: var(--primary-ocean);
    background: rgba(0, 31, 123, 0.05);
}

.glass-nav.scrolled {
    top: 0;
    left: 0;
    right: 0;
    border-radius: 0;
    padding: 0.5rem 2rem;
    background: rgba(0, 10, 30, 0.9);
}

/* 2. Department Cards (CSS Grid) */
.dept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.dept-card {
    position: relative;
    height: 520px;
    border-radius: 32px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition-premium);
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    transform-style: preserve-3d;
}

.dept-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-premium);
    transform: scale(1.1);
}

.dept-card .frosted-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 20%, rgba(0, 31, 123, 0.95));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 3rem;
    color: white;
    backdrop-filter: blur(0px);
    transition: var(--transition-premium);
    z-index: 2;
}

.dept-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--glass-shadow-hover);
}

.dept-card:hover .frosted-overlay {
    background: rgba(0, 31, 123, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.dept-card:hover img {
    transform: scale(1);
}

.dept-card:hover .frosted-overlay h3 {
    color: var(--primary-navy);
}

.dept-card h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

/* 3. Hero Cinematic Gateway */
.hero-gateway {
    position: relative;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    background: var(--black);
}

.hero-gateway video, .hero-gateway img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 31, 123, 0.4) 100%);
    z-index: 1;
}

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

.hero-content-elite h1 {
    font-size: clamp(3.5rem, 9vw, 8rem);
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(40px) scale(0.95);
    filter: blur(10px);
}

.hero-content-elite p {
    font-size: 1.6rem;
    font-family: var(--font-ui);
    max-width: 650px;
    margin-bottom: 3.5rem;
    line-height: 1.4;
    opacity: 0;
    transform: translateY(30px);
    color: rgba(255, 255, 255, 0.8);
}

/* 4. Animation Stubs (GSAP Triggers) */
.gsap-reveal {
    opacity: 1;
    will-change: transform, opacity;
}

/* 5. Responsive Design: Fluid-First */
@media (max-width: 1024px) {
    .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

.hero-bg-img {
    object-fit: contain !important;
}

@media (max-width: 768px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .container-premium { padding: 0 1.5rem; }
    .hero-content-elite h1 { font-size: 3rem; }
    .dept-card { height: 400px; }
    
    .hero-gateway {
        height: 80vh !important;
        min-height: 550px !important;
        align-items: flex-end !important;
        padding-bottom: 140px !important;
    }
    .hero-bg-img {
        object-fit: contain !important;
        object-position: top center !important;
    }
    .stats-matrix-section {
        margin-top: 20px;
    }
}

.stats-matrix-section {
    margin-top: -80px;
}

@media (max-width: 480px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* Lottie Container */
.lottie-micro {
    width: 120px;
    height: 120px;
    margin: 0 auto;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--white);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-navy);
    border-radius: 4px;
}

/* Custom Cursor */
.premium-cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    background: var(--accent-gold);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    mix-blend-mode: difference;
    transition: transform 0.15s ease-out, width 0.3s, height 0.3s;
    transform: translate(-50%, -50%);
}

.premium-cursor.hover {
    width: 60px;
    height: 60px;
    background: rgba(197, 160, 89, 0.4);
    mix-blend-mode: normal;
    border: 1px solid var(--accent-gold);
}

/* Floating Animation */
@keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.floating {
    animation: floating 3s ease-in-out infinite;
}

.premium-icon-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}