/* 
   GLASS Scholars - Premium Design System 
   Theme: Modern Dark with Glassmorphism & Gold/Teal Accents
*/

:root {
    /* Color Palette */
    --bg-dark: #0a0e17;
    /* Deep Navy/Black */
    --bg-panel: rgba(20, 25, 40, 0.7);
    /* Slightly lighter for panels */
    --primary-gold: #d4af37;
    /* Metallic Gold */
    --accent-teal: #38b2ac;
    /* Muted Teal */
    --text-main: #e2e8f0;
    /* Off-white for readability */
    --text-muted: #a0aec0;
    /* Muted gray */
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 6rem;
    --spacing-xl: 15vh;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    /* Subtle gradient background mesh */
    background-image:
        radial-gradient(circle at 10% 20%, rgba(56, 178, 172, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-main);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.75rem;
    color: var(--primary-gold);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-muted);
}

a {
    color: var(--primary-gold);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--accent-teal);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Glassmorphism Utility */
.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.glass-panel:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
    border-color: rgba(212, 175, 55, 0.3);
    /* Subtle gold glow */
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    transition: all var(--transition-smooth);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold), #b38f2d);
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

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

.btn-outline:hover {
    background: var(--primary-gold);
    color: var(--bg-dark);
}

/* Navigation - Special Navbar Glass */
.navbar {
    position: fixed;
    top: var(--spacing-sm);
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 2rem;
    z-index: 1000;

    /* Dedicated Navbar Glass Style */
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    box-shadow: var(--glass-shadow);

    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), background var(--transition-fast);
}

.navbar:hover {
    transform: translateX(-50%) translateY(2px);
    /* Slight dip instead of lift for variety */
    background: rgba(15, 20, 35, 0.9);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    border-color: rgba(212, 175, 55, 0.4);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.logo span {
    color: var(--primary-gold);
}

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

.nav-links a {
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary-gold);
    transition: width var(--transition-smooth);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    /* Offset for navbar */
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    background: linear-gradient(to right, #fff, #a0aec0);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: var(--spacing-md);
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Sections */
section {
    padding: var(--spacing-xl) 0;
}

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

.section-title h2 {
    display: inline-block;
    position: relative;
    padding-bottom: 10px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-gold);
}

/* Footer */
footer {
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    margin-top: var(--spacing-xl);
}

/* Utilities */
.text-gold {
    color: var(--primary-gold);
}

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

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .navbar {
        width: 100%;
        top: 0;
        border-radius: 0;
        padding: 1rem;
    }

    .hamburger {
        display: block;
        color: var(--text-main);
        font-size: 1.5rem;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right var(--transition-smooth);
    }

    .nav-links.active {
        right: 0;
    }
}