/* ============================================
   main.css — 迪卓依思 djoyce.com 核心样式
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-secondary); text-decoration: none; transition: var(--transition-base); }
a:hover { color: var(--color-secondary-dark); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 600; line-height: 1.3; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { margin-bottom: var(--space-md); }

/* ---- Layout ---- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-alt { background: var(--color-card); }

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    font-family: var(--font-heading);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.section-header .subtitle {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    max-width: 640px;
    margin: 0 auto;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    margin: var(--space-md) auto var(--space-lg);
}

/* ---- Navigation ---- */
#main-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

#main-nav.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255,255,255,0.97);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.nav-brand .brand-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.nav-brand:hover { color: var(--color-primary); }

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
}

.nav-link .arrow {
    width: 16px; height: 16px;
    transition: transform var(--transition-fast);
}

.nav-item:hover .arrow { transform: rotate(180deg); }

/* Dropdown */
.dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm) 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    border: 1px solid var(--color-border-light);
}

.nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown a {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    color: var(--color-text);
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.dropdown a:hover {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
}

.nav-secondary {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-secondary .nav-link {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.nav-search-btn {
    width: 40px; height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.nav-search-btn:hover {
    background: var(--color-sky);
    color: var(--color-secondary);
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

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

/* ---- Hero Section ---- */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0a1628 0%, #1a3a5c 40%, #0d2137 100%);
    padding-top: 72px;
}

.hero-bg-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--space-lg);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.15);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
    letter-spacing: 0.05em;
}

.hero-badge .dot {
    width: 8px; height: 8px;
    background: var(--color-primary-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.75);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: 0 4px 16px rgba(46,125,50,0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(46,125,50,0.45);
    color: white;
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 1px solid rgba(255,255,255,0.25);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.2);
    color: white;
    transform: translateY(-2px);
}

.btn-sm {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
}

/* Scroll indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(255,255,255,0.5);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- Core Modules ---- */
#core-modules { background: var(--color-bg); }

.modules-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.module-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transition: var(--transition-base);
}

.module-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.module-card:hover::before { opacity: 1; }

.module-icon {
    width: 72px; height: 72px;
    margin: 0 auto var(--space-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.module-card:nth-child(1) .module-icon { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
.module-card:nth-child(2) .module-icon { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
.module-card:nth-child(3) .module-icon { background: linear-gradient(135deg, #E0F7FA, #B2EBF2); }
.module-card:nth-child(4) .module-icon { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }

.module-card h3 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.module-card p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.module-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.9375rem;
}

.module-link:hover { gap: 8px; }

/* ---- Stats Section ---- */
#stats {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary-dark));
    color: white;
    padding: var(--space-3xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    text-align: center;
}

.stat-item {
    padding: var(--space-lg);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, #fff, rgba(255,255,255,0.7));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.7);
    letter-spacing: 0.05em;
}

/* ---- Learning Path ---- */
#learning-path { background: var(--color-card); }

.path-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.path-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    transform: translateX(-50%);
}

.path-step {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    position: relative;
}

.path-step:nth-child(even) { flex-direction: row-reverse; }
.path-step:last-child { margin-bottom: 0; }

.path-step-content {
    flex: 1;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
}

.path-step-content:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.path-step-number {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.path-step h3 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

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

.path-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.path-tag {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
}

/* ---- Featured Tracks ---- */
#featured-tracks { background: var(--color-bg); }

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.track-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    transition: var(--transition-base);
}

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

.track-card .track-img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.track-card:hover .track-img { transform: scale(1.08); }

.track-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-xl);
    color: white;
}

.track-region {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-xs);
    letter-spacing: 0.05em;
}

.track-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.track-count {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

/* ---- Latest Content ---- */
#latest-content { background: var(--color-card); }

.content-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-2xl);
}

.tab-btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.tab-btn:hover { background: var(--color-border-light); color: var(--color-text); }
.tab-btn.active {
    background: var(--color-primary);
    color: white;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.article-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

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

.article-card .article-thumb {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-sky), var(--color-border-light));
}

.article-card .article-body {
    padding: var(--space-lg);
}

.article-meta-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.article-meta-row .category-tag {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.article-card h4 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    color: var(--color-text);
}

.article-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---- Geo Calendar ---- */
#geo-calendar { background: var(--color-bg); }

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.calendar-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.calendar-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--color-primary);
    opacity: 0;
    transition: var(--transition-base);
}

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

.calendar-card:hover::before { opacity: 1; }

.calendar-date {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.calendar-date .day {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.calendar-date .month {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.calendar-card h4 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    margin-bottom: var(--space-sm);
}

.calendar-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.calendar-tag {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    background: #FFF3E0;
    color: var(--color-accent);
    font-weight: 500;
}

/* ---- CTA Section ---- */
#cta {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary-dark));
    color: white;
    text-align: center;
    padding: var(--space-4xl) 0;
}

#cta h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

#cta p {
    color: rgba(255,255,255,0.75);
    font-size: 1.125rem;
    max-width: 560px;
    margin: 0 auto var(--space-xl);
}

#cta .btn-primary {
    background: white;
    color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

#cta .btn-primary:hover {
    background: var(--color-sky);
    transform: translateY(-2px);
}

/* ---- Footer ---- */
#main-footer {
    background: #0a1628;
    color: rgba(255,255,255,0.7);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand .brand-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
}

.footer-col h4 {
    font-family: var(--font-heading);
    color: white;
    font-size: 1rem;
    margin-bottom: var(--space-lg);
}

.footer-col a {
    display: block;
    color: rgba(255,255,255,0.6);
    padding: var(--space-xs) 0;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.footer-col a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: rgba(255,255,255,0.4);
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

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

.back-to-top {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition-fast);
}

.back-to-top:hover {
    background: var(--color-primary);
    transform: translateY(-4px);
}

/* ---- About Page Specific ---- */
.about-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(160deg, #0a1628 0%, #1a3a5c 40%, #0d2137 100%);
    color: white;
    padding-top: 72px;
    position: relative;
    overflow: hidden;
}

.about-hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.about-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--space-md);
}

.about-hero p {
    color: rgba(255,255,255,0.75);
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-section {
    padding: var(--space-4xl) 0;
}

.about-section-alt { background: var(--color-card); }

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-text h2 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.about-visual {
    position: relative;
}

.about-visual svg {
    width: 100%;
    height: auto;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
}

.timeline-item {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    padding-left: 8px;
}

.timeline-dot {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--color-card);
    border: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    z-index: 2;
}

.timeline-content {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    flex: 1;
}

.timeline-content h4 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.timeline-content .year {
    font-size: 0.8125rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
    line-height: 1.7;
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

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

.pub-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.pub-card .pub-type {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.pub-card h4 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.pub-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

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

.value-card .value-icon {
    width: 64px; height: 64px;
    margin: 0 auto var(--space-md);
    background: var(--color-sky);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.value-card h4 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-sm);
}

.value-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* ---- Search Overlay ---- */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-box {
    width: 100%;
    max-width: 640px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: translateY(-20px);
    transition: var(--transition-base);
}

.search-overlay.active .search-box {
    transform: translateY(0);
}

.search-input-wrap {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.search-input-wrap input {
    flex: 1;
    border: none;
    font-size: 1.125rem;
    padding: var(--space-sm);
    outline: none;
    font-family: var(--font-body);
}

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

.search-close {
    width: 36px; height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
}

.search-close:hover {
    background: var(--color-border-light);
    color: var(--color-text);
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}


/* ============================================
   Geo Calendar Pagination Styles
   ============================================ */

.calendar-pagination {
    margin-top: var(--space-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.pagination-inner {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-wrap: wrap;
    justify-content: center;
}

.pagination-btn,
.pagination-num {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    background: var(--color-card);
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-body);
}

.pagination-btn:hover:not(.disabled),
.pagination-num:hover:not(.active) {
    background: var(--color-sky);
    border-color: var(--color-secondary-light);
    color: var(--color-secondary-dark);
}

.pagination-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-num.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(46, 125, 50, 0.3);
}

.pagination-ellipsis {
    color: var(--color-text-muted);
    padding: 0 var(--space-sm);
    font-size: 0.875rem;
}

.pagination-info {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Calendar card dynamic tag color override */
.calendar-card .calendar-tag {
    transition: var(--transition-fast);
}

/* Today highlight for calendar cards */
.calendar-card.today {
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 0 4px rgba(46, 125, 50, 0.1);
}

.calendar-card.today .calendar-date .day {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive pagination */
@media (max-width: 479px) {
    .pagination-btn {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.8125rem;
    }
    .pagination-num {
        padding: var(--space-xs) var(--space-sm);
        min-width: 32px;
        justify-content: center;
    }
}