/* ==========================================================================
   Design Tokens
   ========================================================================== */
:root {
    /* Colors - Custom CMYK Purple (C=80, M=90, Y=0, K=0 -> #3E1485) */
    --clr-bg: #ffffff;
    --clr-bg-light: #faf5ff;
    --clr-text: #2d3748;
    --clr-text-light: #718096;
    --clr-primary: #3E1485;   /* Exact HEX from user */
    --clr-primary-dark: #2a0b61;
    --clr-border: #d8b4fe;
	--clr-pantone2025: #A47864;
	--clr-text-pantone2026: #ECD8DC;
	--clr-text-dark-pantone2026: #BA7180;
    
    /* Typography */
    --font-main: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: #0f172a;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; margin-bottom: var(--spacing-md); }
h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--clr-text-light);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.bg-light {
    background-color: var(--clr-bg-light);
}

.section-subtitle {
    display: inline-block;
    color: var(--clr-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

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

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--clr-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-pinkish {
    background-color: #ec4899;
    color: white;
}

.btn-pantone2025 {
	background-color: var(--clr-pantone2025);
	color: white;
}

.btn-pinkish:hover {
    background-color: #be185d;
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-pantone2025:hover {
    background-color: #be185d;
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--clr-border);
    color: var(--clr-text);
}

.btn-outline:hover {
    border-color: var(--clr-primary);
    color: var(--clr-primary);
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    transition: all var(--transition-base);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem var(--spacing-lg);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--clr-text);
    font-weight: 500;
    position: relative;
}

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

.nav-links a:hover {
    color: var(--clr-primary);
}

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

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

.burger div {
    width: 25px;
    height: 3px;
    background-color: var(--clr-text);
    margin: 5px;
    transition: all 0.3s ease;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    height: 80vh;
    min-height: 660px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    /* Sky Background Image */
    background: url('assets/sky.png') center/cover no-repeat;
    padding: 0 var(--spacing-lg);
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.15);
    z-index: 1;
}

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

.hero h1 {
    color: #0f172a; /* Darker for light background */
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    color: #334155;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   Vision Section
   ========================================================================== */
.vision-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.vision-image img {
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
    height: 100%;
    width: 100%;
    max-height: 500px;
}

/* ==========================================================================
   Portfolio Section
   ========================================================================== */
.portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--clr-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--clr-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--clr-border);
}

.card-content {
    padding: var(--spacing-lg);
    flex: 1;
}

/* ==========================================================================
   News Section (Blog Cards)
   ========================================================================== */
.news-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    margin-top: var(--spacing-lg);
}

.blog-card {
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: box-shadow var(--transition-base);
}

.blog-card:hover {
    box-shadow: var(--shadow-md);
}

.blog-meta {
    font-size: 0.85rem;
    color: var(--clr-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.blog-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.blog-excerpt {
    font-size: 0.95rem;
}

.read-more {
    font-weight: 600;
    font-size: 0.9rem;
}

/* ==========================================================================
   Members Section (Icon/Text only, no faces)
   ========================================================================== */
.members-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    margin-top: var(--spacing-lg);
}

.member-card {
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    text-align: center;
    transition: transform var(--transition-base);
}

.member-card:hover {
    transform: translateY(-5px);
    border-color: var(--clr-primary);
}

.member-initials {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--clr-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: var(--shadow-md);
}

.member-name {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.member-role {
    color: var(--clr-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.social-links {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: #cbd5e1;
}

.social-links a {
    color: var(--clr-text-light);
    margin: 0 2px;
    font-weight: 600;
}

.social-links a:hover {
    color: var(--clr-primary);
}

.member-interest {
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* ==========================================================================
   Members Tabs
   ========================================================================== */
.members-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--clr-primary);
    color: var(--clr-primary);
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

.tab-btn.active, .tab-btn:hover {
    background: var(--clr-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-content {
    display: none;
    animation: fadeInTab 0.5s ease;
}

.tab-content.active {
    display: block;
}

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

/* ==========================================================================
   Lectures Section
   ========================================================================== */
.lecture-list {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.lecture-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: 12px;
    transition: box-shadow var(--transition-base);
}

.lecture-item:hover {
    box-shadow: var(--shadow-md);
}

.lecture-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 70px;
    padding-right: var(--spacing-lg);
    border-right: 1px solid var(--clr-border);
    margin-right: var(--spacing-lg);
}

.lecture-date .month {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--clr-primary);
}

.lecture-date .day {
    font-size: 1.2rem;
    font-weight: 500;
    line-height: 1;
    color: #0f172a;
}

.lecture-details {
    flex: 1;
}

.lecture-details h3 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.lecture-details p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .lecture-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    .lecture-date {
        border-right: none;
        border-bottom: 1px solid var(--clr-border);
        padding-right: 0;
        padding-bottom: var(--spacing-md);
        margin-right: 0;
    }
}

/* ==========================================================================
   Footer & Map
   ========================================================================== */
.footer {
    background-color: var(--clr-primary-dark);
    color: #e2e8f0;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer h3, .footer h4{
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer h4 {
	color: var(--clr-text-pantone2026);
	margin-bottom: var(--spacing-md);
}

.footer p {
    color: #94a3b8;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: #94a3b8;
}

.footer-links a:hover {
    color: white;
}

/* Map Embed */
.map-container {
    margin-top: var(--spacing-md);
    border-radius: 8px;
    overflow: hidden;
    background: var(--clr-primary);
    height: 200px;
    border: 1px solid var(--clr-primary-light, #5c20b5);
    transition: opacity var(--transition-fast);
}

.map-container:hover {
    opacity: 0.9;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--clr-primary);
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.is-visible {
    opacity: 1;
    transform: translate(0);
}

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

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 900px) {
    .vision-grid {
        grid-template-columns: 1fr;
    }
    
    .vision-image {
        order: -1; /* Image on top for mobile */
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .nav-links {
        position: absolute;
        right: 0px;
        height: 100vh;
        top: 0;
        background-color: var(--clr-bg);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        width: 100%;
        transform: translateX(100%);
        transition: transform 0.4s ease-in;
    }
    
    .nav-links.nav-active {
        transform: translateX(0%);
    }
    
    .burger {
        display: block;
        z-index: 10;
    }
    
    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    .toggle .line2 {
        opacity: 0;
    }
    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}