/* ==========================================================================
   GEESKA - Main Styles
   Design System: Scholarly Editorial with Warm Accents
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors - Warm earth tones inspired by Somali landscapes */
    --color-primary: #1a3a52;
    --color-primary-light: #2d5270;
    --color-primary-dark: #0f2638;
    
    --color-accent: #d4a574;
    --color-accent-dark: #c4915a;
    --color-accent-light: #e4c5a4;
    
    --color-text: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-tertiary: #7a7a7a;
    
    --color-bg: #fafaf8;
    --color-bg-secondary: #f5f3f0;
    --color-bg-tertiary: #ffffff;
    
    --color-border: #e5e1db;
    --color-border-light: #f0ede8;
    
    /* Typography */
    --font-serif: 'Crimson Pro', 'Georgia', serif;
    --font-sans: 'DM Sans', system-ui, -apple-system, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.12);
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */

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

.section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
}

.section-header .lead {
    font-size: 1.25rem;
    line-height: 1.6;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.navbar {
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    font-size: 1.75rem;
    color: var(--color-accent);
}

.logo-text {
    font-family: var(--font-serif);
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    list-style: none;
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.2s;
}

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

.btn-contact {
    padding: 0.5rem 1.25rem;
    background: var(--color-primary);
    color: white !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.btn-contact:hover {
    background: var(--color-primary-light);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-links {
        display: none;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    padding: var(--space-3xl) 0;
    overflow: hidden;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #fafaf8 0%, #f5f3f0 100%);
    z-index: 0;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image: 
        repeating-linear-gradient(0deg, var(--color-primary) 0px, var(--color-primary) 1px, transparent 1px, transparent 60px),
        repeating-linear-gradient(90deg, var(--color-primary) 0px, var(--color-primary) 1px, transparent 1px, transparent 60px);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-accent-light);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 50px;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--space-md);
    line-height: 1.1;
}

.hero-title .highlight {
    color: var(--color-accent-dark);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* Search Box */
.hero-search {
    margin: var(--space-xl) 0;
}

.search-box {
    display: flex;
    align-items: center;
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 12px 28px rgba(26, 58, 82, 0.15);
}

.search-icon {
    color: var(--color-text-tertiary);
    margin-right: 0.75rem;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1rem;
    color: var(--color-text);
}

.search-input::placeholder {
    color: var(--color-text-tertiary);
}

.search-btn {
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.search-btn:hover {
    background: var(--color-primary-light);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
    flex-wrap: wrap;
}

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

.stat-number {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* CTAs */
.hero-ctas {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-align: center;
    cursor: pointer;
}

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

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

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.link-arrow {
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.link-arrow::after {
    content: '→';
    transition: transform 0.2s;
}

.link-arrow:hover::after {
    transform: translateX(4px);
}

.center-cta {
    text-align: center;
    margin-top: var(--space-xl);
}

/* ==========================================================================
   About Section
   ========================================================================== */

.section-about {
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.benefit-card {
    text-align: center;
    padding: var(--space-xl);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.benefit-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.benefit-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==========================================================================
   Disciplines Section
   ========================================================================== */

.section-disciplines {
    background: var(--color-bg-secondary);
}

.discipline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.discipline-card {
    position: relative;
    padding: var(--space-xl);
    background: white;
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    transition: var(--transition);
    display: block;
}

.discipline-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-governance { border-color: #e74c3c; }
.card-economy { border-color: #3498db; }
.card-environment { border-color: #2ecc71; }
.card-health { border-color: #e67e22; }

.discipline-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.discipline-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.discipline-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    font-size: 0.9375rem;
}

.discipline-count {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
}

.card-arrow {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-size: 1.5rem;
    color: var(--color-accent);
    opacity: 0;
    transition: var(--transition);
}

.discipline-card:hover .card-arrow {
    opacity: 1;
    transform: translateX(4px);
}

/* ==========================================================================
   Collections Section
   ========================================================================== */

.section-collections {
    background: white;
}

.collections-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
}

.collection-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.collection-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.collection-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.collection-overlay {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
}

.collection-count {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    backdrop-filter: blur(10px);
}

.collection-content {
    padding: var(--space-lg);
}

.collection-meta {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-sm);
}

.collection-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.collection-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

/* ==========================================================================
   Award Section
   ========================================================================== */

.section-award {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    overflow: hidden;
}

.award-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.05;
    background-image: 
        repeating-linear-gradient(45deg, white 0px, white 2px, transparent 2px, transparent 60px);
}

.award-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.award-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
}

.award-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 50px;
    margin-bottom: var(--space-md);
}

.award-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: var(--space-md);
    color: white;
}

.award-description {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    opacity: 0.95;
    line-height: 1.6;
}

.award-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.award-detail {
    text-align: left;
}

.award-detail strong {
    display: block;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.award-ctas {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-award {
    padding: 1rem 2rem;
    background: var(--color-accent);
    color: var(--color-primary-dark);
    font-weight: 700;
}

.btn-award:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
}

.btn-award-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-award-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Papers Section
   ========================================================================== */

.section-latest {
    background: var(--color-bg-secondary);
}

.papers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-xl);
}

.paper-card {
    background: white;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.paper-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.paper-meta {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.paper-type,
.paper-year {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.paper-type {
    background: var(--color-accent-light);
    color: var(--color-primary);
}

.paper-year {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
}

.paper-title {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.paper-title a {
    color: var(--color-primary);
}

.paper-title a:hover {
    color: var(--color-accent-dark);
}

.paper-authors {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.paper-institution {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.paper-abstract {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.paper-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--space-md);
}

.tag {
    font-size: 0.8125rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: 50px;
}

.paper-stats {
    display: flex;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

/* ==========================================================================
   Newsletter Section
   ========================================================================== */

.section-newsletter {
    background: white;
}

.newsletter-box {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--space-2xl);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--color-border);
}

.newsletter-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.newsletter-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.newsletter-input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
}

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

.btn-newsletter {
    padding: 0.875rem 1.75rem;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.btn-newsletter:hover {
    background: var(--color-primary-light);
}

.newsletter-privacy {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-md);
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-accent-light);
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.footer-description {
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-accent);
    color: var(--color-primary-dark);
}

.footer-col h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--space-md);
    font-family: var(--font-sans);
    font-weight: 600;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: 0.9375rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-2xl) 0;
    }
    
    .stats-bar {
        gap: var(--space-md);
    }
    
    .stat-divider {
        display: none;
    }
    
    .hero-ctas,
    .award-ctas {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .search-box {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .search-btn {
        width: 100%;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .papers-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

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

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }