/* ==========================================
   SUNKANMI FOLORUNSHO - MODERN ACADEMIC
   Dark Professional Design
   ========================================== */

/* CSS Variables - Dark Theme */
:root {
    --primary-dark: #0a1929;
    --secondary-dark: #1e2836;
    --tertiary-dark: #2d3748;
    --accent-gold: #f4a261;
    --accent-gold-light: #f6b17a;
    --text-primary: #ffffff;
    --text-secondary: #a8b2d1;
    --text-muted: #64748b;
    --border-color: #334155;
    --card-bg: #1e293b;
    --hover-bg: #2d3748;
    
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    line-height: 1.7;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.375rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

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

/* Selection */
::selection {
    background: var(--accent-gold);
    color: var(--primary-dark);
}

/* ==========================================
   NAVIGATION
   ========================================== */

.main-nav {
    background: rgba(14, 23, 41, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo-wrapper {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    transition: var(--transition);
}

.logo-badge {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #e76f51 100%);
    color: var(--primary-dark);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    padding: 10px 16px;
    border-radius: 8px;
    letter-spacing: -1px;
    box-shadow: 0 4px 12px rgba(244, 162, 97, 0.3);
    transition: var(--transition);
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.site-logo-wrapper:hover .logo-badge {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(244, 162, 97, 0.4);
}

.site-logo-wrapper:hover .logo-name {
    color: var(--accent-gold);
}

.mobile-menu-toggle {
    display: none;
    background: var(--accent-gold);
    color: var(--primary-dark);
    border: none;
    padding: 0.65rem 1.25rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 6px;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background: var(--accent-gold-light);
    transform: translateY(-1px);
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-gold);
    border-bottom-color: var(--accent-gold);
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero-section {
    background: linear-gradient(135deg, rgba(10, 25, 41, 0.95) 0%, rgba(30, 40, 54, 0.95) 100%);
    text-align: center;
    padding: 6rem 2rem 5rem 2rem;
    border-bottom: 2px solid var(--accent-gold);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(244, 162, 97, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-year {
    font-size: 1.25rem;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--accent-gold);
    margin-bottom: 0.75rem;
    letter-spacing: 2px;
}

.hero-name {
    font-size: 4rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    line-height: 1.1;
}

.hero-title {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero-tagline {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem auto;
    line-height: 1.6;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-gold);
    color: var(--primary-dark);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 16px rgba(244, 162, 97, 0.3);
    transition: var(--transition);
}

.hero-cta:hover {
    background: var(--accent-gold-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(244, 162, 97, 0.4);
}

/* ==========================================
   FEATURED PHOTO
   ========================================== */

.featured-photo-section {
    max-width: 600px;
    margin: -4rem auto 4rem auto;
    padding: 0 2rem;
    text-align: center;
    position: relative;
    z-index: 10;
}

.profile-photo {
    max-width: 100%;
    width: 400px;
    border-radius: 16px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
    transition: var(--transition);
    border: 4px solid var(--accent-gold);
}

.profile-photo:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.7);
}

/* ==========================================
   MAIN CONTENT
   ========================================== */

.main-content,
.page-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.content-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ==========================================
   PAGE HEADERS
   ========================================== */

.page-header {
    text-align: center;
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--accent-gold);
}

.page-header h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-intro {
    font-size: 1.35rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ==========================================
   SECTIONS
   ========================================== */

.section-heading {
    font-size: 2.25rem;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--accent-gold);
    display: inline-block;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================
   CARDS & GRIDS
   ========================================== */

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-gold);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn-primary {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--primary-dark);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(244, 162, 97, 0.3);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--accent-gold-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(244, 162, 97, 0.4);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--accent-gold);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid var(--accent-gold);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--accent-gold);
    color: var(--primary-dark);
    transform: translateY(-2px);
}

/* ==========================================
   THE VAULT SECTION
   ========================================== */

.vault-section {
    margin: 4rem 0;
    background: var(--card-bg);
    padding: 3rem 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.vault-title {
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.vault-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.vault-item {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.vault-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-gold);
    transform: scaleY(0);
    transition: var(--transition);
}

.vault-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-gold);
}

.vault-item:hover::before {
    transform: scaleY(1);
}

.vault-badge {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--primary-dark);
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
    margin-bottom: 1.25rem;
    border-radius: 6px;
}

.vault-item h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.vault-item h3 a {
    color: var(--text-primary);
}

.vault-item h3 a:hover {
    color: var(--accent-gold);
}

.vault-meta {
    font-size: 0.95rem;
    color: var(--accent-gold);
    font-style: italic;
    margin-bottom: 0.75rem;
}

.vault-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
}

.view-all-link {
    text-align: center;
    margin-top: 2.5rem;
}

.view-all-link a {
    font-size: 1.15rem;
    font-weight: 600;
}

/* ==========================================
   FOOTER
   ========================================== */

.site-footer {
    background: var(--primary-dark);
    color: var(--text-secondary);
    margin-top: 6rem;
    padding: 4rem 2rem 2rem 2rem;
    border-top: 2px solid var(--accent-gold);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: var(--text-primary);
    font-size: 1.15rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.footer-logo-box {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #e76f51 100%);
    color: var(--primary-dark);
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    padding: 1.25rem 1.75rem;
    border-radius: 12px;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 16px rgba(244, 162, 97, 0.3);
}

.footer-col p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--accent-gold);
    padding-left: 4px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    transition: var(--transition);
    font-size: 1.25rem;
}

.social-icon:hover {
    background: var(--accent-gold);
    color: var(--primary-dark);
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.social-icon i {
    font-size: 1.25rem;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.newsletter-input {
    flex: 1;
    padding: 0.85rem 1rem;
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.newsletter-btn {
    padding: 0.85rem 1.5rem;
    background: var(--accent-gold);
    color: var(--primary-dark);
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-btn:hover {
    background: var(--accent-gold-light);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 968px) {
    .hero-name {
        font-size: 3rem;
    }
    
    .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-wrap: wrap;
        padding: 1rem;
    }

    .site-logo-wrapper {
        margin-bottom: 0.5rem;
    }

    .logo-name {
        font-size: 0.95rem;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 0;
        width: 100%;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
        width: 100%;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1.1rem;
    }

    .page-header h1 {
        font-size: 2.5rem;
    }

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

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .main-content,
    .page-content {
        padding: 2rem 1rem;
    }

    .hero-section {
        padding: 4rem 1rem 3rem 1rem;
    }

    .hero-name {
        font-size: 2rem;
    }

    .profile-photo {
        width: 100%;
    }
}

/* ==========================================
   ANIMATIONS
   ========================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scroll offset for fixed header */
html {
    scroll-padding-top: 100px;
}