/* ============================================
   NingNingYu.com — Modern Creative Theme
   ============================================ */

:root {
    --primary: #6C63FF;
    --primary-dark: #5A52E0;
    --primary-light: #8B85FF;
    --accent: #FF6B6B;
    --accent-light: #FF8E8E;
    --bg-dark: #0A0A1A;
    --bg-dark-2: #111128;
    --bg-light: #FAFAFE;
    --bg-card: #FFFFFF;
    --text-primary: #1A1A2E;
    --text-secondary: #555577;
    --text-light: #E0E0F0;
    --text-muted: #8888AA;
    --border: #E8E8F0;
    --gradient-1: linear-gradient(135deg, #6C63FF 0%, #FF6B6B 100%);
    --gradient-2: linear-gradient(135deg, #0A0A1A 0%, #1A1A3E 100%);
    --shadow-sm: 0 2px 8px rgba(108, 99, 255, 0.08);
    --shadow-md: 0 8px 30px rgba(108, 99, 255, 0.12);
    --shadow-lg: 0 20px 60px rgba(108, 99, 255, 0.15);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: var(--bg-light);
    line-height: 1.7;
    overflow-x: hidden;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

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

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 16px 0;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition);
}
.navbar.scrolled { padding: 10px 0; background: rgba(10, 10, 26, 0.95); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-size: 1.5rem; font-weight: 800; background: var(--gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; letter-spacing: -1px; }
.nav-menu { list-style: none; display: flex; gap: 32px; }
.nav-link { color: var(--text-light); font-size: 0.9rem; font-weight: 500; letter-spacing: 0.5px; text-transform: uppercase; position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--gradient-1); transition: var(--transition); }
.nav-link:hover { color: #fff; }
.nav-link:hover::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text-light); transition: var(--transition); }

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: var(--gradient-2); position: relative; overflow: hidden; padding: 120px 24px 80px;
}
.hero-particles { position: absolute; inset: 0; }
.hero-content { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 60px; position: relative; z-index: 2; text-align: left; }
.hero-greeting { color: var(--primary-light); font-size: 1.1rem; font-weight: 500; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; }
.hero-name { font-size: 4.5rem; font-weight: 800; color: #fff; line-height: 1.1; letter-spacing: -2px; }
.hero-name-cn { font-size: 2.5rem; font-weight: 700; background: var(--gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-top: 8px; }
.hero-title { color: var(--text-light); font-size: 1.2rem; margin-top: 20px; font-weight: 400; }
.hero-subtitle { color: var(--text-muted); font-size: 1rem; margin-top: 8px; }
.hero-cta { margin-top: 36px; display: flex; gap: 16px; flex-wrap: wrap; justify-content: flex-start; }

.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-avatar { position: relative; width: 500px; height: 400px; overflow: hidden; border-radius: 16px; }
.avatar-ring {
    position: absolute; inset: 0; border-radius: 16px;
    border: 3px solid transparent;
    background: conic-gradient(from 0deg, #6C63FF, #FF6B6B, #6C63FF) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    z-index: 2;
}
.avatar-initials {
    position: absolute; inset: 12px; border-radius: 12px;
    background: var(--bg-dark-2);
    display: flex; align-items: center; justify-content: center;
    font-size: 4rem; font-weight: 800; color: var(--primary-light); letter-spacing: -2px;
}
.avatar-photo {
    position: absolute;
    border-radius: 12px;
    top: 12px; left: 12px;
    width: calc(100% - 24px); height: calc(100% - 24px);
    object-fit: cover;
    object-position: top center;
    transform: scale(1);
    transform-origin: center center;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hero-scroll { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 2px; }
.scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--primary), transparent); animation: scrollBounce 2s infinite; }
@keyframes scrollBounce { 0%, 100% { transform: scaleY(1); opacity: 1; } 50% { transform: scaleY(0.5); opacity: 0.5; } }

/* Buttons */
.btn { display: inline-block; padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 0.95rem; letter-spacing: 0.5px; transition: var(--transition); cursor: pointer; }
.btn-primary { background: var(--gradient-1); color: #fff; border: none; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(108, 99, 255, 0.4); color: #fff; }
.btn-outline { border: 2px solid rgba(255,255,255,0.3); color: #fff; background: transparent; }
.btn-outline:hover { border-color: var(--primary-light); color: #fff; background: rgba(108, 99, 255, 0.1); }

/* Animations */
.animate-fade-up { opacity: 0; transform: translateY(30px); animation: fadeUp 0.8s ease forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

/* ============================================
   Sections
   ============================================ */
.section { padding: 100px 0; }
.section-dark { background: var(--bg-dark); color: var(--text-light); }
.section-title {
    font-size: 2.8rem; font-weight: 800; text-align: center; margin-bottom: 16px;
    letter-spacing: -1px;
}
.section-dark .section-title { color: #fff; }
.section-subtitle { text-align: center; color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 60px; max-width: 600px; margin-left: auto; margin-right: auto; }
.section-dark .section-subtitle { color: var(--text-muted); }

/* ============================================
   About Section
   ============================================ */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 60px; align-items: start; margin-top: 48px; }
.about-lead { font-size: 1.3rem; font-weight: 600; color: var(--primary); line-height: 1.6; margin-bottom: 20px; }
.about-text p { margin-bottom: 16px; color: var(--text-secondary); }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 20px; text-align: center; transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.stat-number { display: block; font-size: 2.5rem; font-weight: 800; background: var(--gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-top: 4px; font-weight: 500; }

/* ============================================
   Resume Section
   ============================================ */
.resume-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 60px; }
.resume-heading { font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 30px; display: flex; align-items: center; gap: 10px; }
.resume-heading.center { justify-content: center; margin-top: 60px; }
.icon { font-size: 1.5rem; }

/* Timeline */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ''; position: absolute; left: 6px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--primary), var(--accent)); }
.timeline-item { position: relative; margin-bottom: 30px; }
.timeline-dot {
    position: absolute; left: -30px; top: 6px; width: 14px; height: 14px;
    border-radius: 50%; background: var(--bg-dark); border: 3px solid var(--primary);
}
.timeline-dot.active { background: var(--primary); box-shadow: 0 0 12px rgba(108, 99, 255, 0.5); }
.timeline-date { display: inline-block; font-size: 0.8rem; color: var(--primary-light); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 4px; }
.timeline-content h4 { font-size: 1.1rem; color: #fff; font-weight: 600; }
.timeline-place { color: var(--primary-light); font-size: 0.9rem; font-weight: 500; margin-bottom: 6px; }
.timeline-content p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

/* Companies Grid */
.companies-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 30px; }
.company-card {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-sm); padding: 24px; transition: var(--transition); position: relative; overflow: hidden;
}
.company-card:hover { border-color: var(--primary); background: rgba(108, 99, 255, 0.05); transform: translateY(-2px); }
.company-card.highlight { border-color: var(--accent); background: rgba(255, 107, 107, 0.05); }
.company-number { font-size: 2rem; font-weight: 800; color: rgba(108, 99, 255, 0.2); margin-bottom: 8px; }
.company-card h4 { color: #fff; font-size: 1.1rem; margin-bottom: 6px; }
.company-card p { color: var(--text-muted); font-size: 0.85rem; }
.tag { display: inline-block; background: rgba(108, 99, 255, 0.15); color: var(--primary-light); padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }

/* ============================================
   Achievements Section
   ============================================ */
.achievements-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; margin-top: 48px; }
.achievement-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 36px; transition: var(--transition);
}
.achievement-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.achievement-icon { font-size: 2.5rem; margin-bottom: 16px; }
.achievement-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; color: var(--text-primary); }
.achievement-org { color: var(--primary); font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; }
.achievement-card p:last-child { color: var(--text-secondary); font-size: 0.9rem; }

/* ============================================
   Articles Section
   ============================================ */
.articles-years { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-top: 48px; }
.year-card {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius); padding: 32px 24px; transition: var(--transition); text-decoration: none;
}
.year-card:hover { border-color: var(--primary); background: rgba(108, 99, 255, 0.08); transform: translateY(-4px); }
.year-number { font-size: 2.5rem; font-weight: 800; color: #fff; }
.year-label { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }
.year-arrow { font-size: 1.5rem; color: var(--primary-light); margin-top: 12px; transition: var(--transition); }
.year-card:hover .year-arrow { transform: translateX(4px); }

.subsection-title { font-size: 1.4rem; font-weight: 700; color: #fff; margin: 60px 0 24px; }

.articles-preview { display: grid; gap: 16px; }
.article-card {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-sm); padding: 24px 28px; display: flex; align-items: center; gap: 20px;
    transition: var(--transition);
}
.article-card:hover { border-color: var(--primary); background: rgba(108, 99, 255, 0.05); }
.article-date { flex-shrink: 0; background: var(--gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-weight: 800; font-size: 1.1rem; }
.article-card h4 { font-size: 1rem; font-weight: 600; }
.article-card h4 a { color: #fff; }
.article-card h4 a:hover { color: var(--primary-light); }
.article-source { color: var(--text-muted); font-size: 0.8rem; margin-top: 4px; }

/* ============================================
   Quote Section
   ============================================ */
.quote-section { background: var(--bg-light); padding: 80px 0; }
.featured-quote {
    max-width: 800px; margin: 0 auto; text-align: center; padding: 40px;
}
.featured-quote p { font-size: 1.6rem; font-weight: 600; color: var(--text-primary); line-height: 1.6; font-style: italic; }
.quote-translation { font-size: 1.1rem !important; color: var(--text-secondary) !important; font-weight: 400 !important; margin-top: 16px; }
.featured-quote cite { display: block; margin-top: 24px; font-size: 1rem; color: var(--primary); font-style: normal; font-weight: 600; }

/* ============================================
   Article Detail Pages
   ============================================ */
.page-header {
    background: var(--gradient-2); padding: 140px 24px 80px; text-align: center;
}
.page-header h1 { font-size: 3rem; font-weight: 800; color: #fff; }
.page-header p { color: var(--text-muted); margin-top: 12px; font-size: 1.1rem; }

.year-summary {
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.08), rgba(255, 107, 107, 0.05));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 40px;
    margin: -40px auto 48px;
    max-width: 900px;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-md);
}
.section-dark .year-summary {
    background: rgba(255,255,255,0.03);
    border-color: rgba(255,255,255,0.1);
}
.year-summary h3 {
    font-size: 1.2rem; font-weight: 700; color: var(--primary); margin-bottom: 12px;
}
.year-summary p {
    color: var(--text-secondary); font-size: 1rem; line-height: 1.7;
}

.back-link { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-light); font-weight: 500; margin-bottom: 24px; }
.back-link:hover { color: #fff; }

.article-list { max-width: 900px; margin: 0 auto; }
.article-list-item {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius); padding: 32px; margin-bottom: 20px; transition: var(--transition);
}
.article-list-item:hover { border-color: var(--primary); background: rgba(108, 99, 255, 0.05); transform: translateX(4px); }
.article-list-item h3 { font-size: 1.15rem; color: #fff; font-weight: 600; margin-bottom: 8px; }
.article-list-item h3 a { color: #fff; }
.article-list-item h3 a:hover { color: var(--primary-light); }
.article-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.article-meta span { font-size: 0.85rem; color: var(--text-muted); }
.article-meta .source { color: var(--primary-light); font-weight: 600; }
.article-list-item p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }

/* Year Navigation */
.year-nav { display: flex; justify-content: center; gap: 12px; margin-top: 48px; flex-wrap: wrap; }
.year-nav a {
    padding: 10px 20px; border-radius: 50px; font-weight: 600; font-size: 0.9rem;
    border: 1px solid rgba(255,255,255,0.15); color: var(--text-muted); transition: var(--transition);
}
.year-nav a:hover, .year-nav a.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ============================================
   Images Gallery Page
   ============================================ */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin-top: 48px; }
.gallery-item {
    border-radius: var(--radius); overflow: hidden; position: relative;
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    transition: var(--transition); aspect-ratio: 4/3;
}
.gallery-item:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.gallery-placeholder {
    width: 100%; height: 100%; display: flex; flex-direction: column;
    align-items: center; justify-content: center; padding: 24px; text-align: center;
}
.gallery-placeholder .gallery-icon { font-size: 3rem; margin-bottom: 12px; }
.gallery-placeholder h4 { color: #fff; font-size: 1rem; margin-bottom: 8px; }
.gallery-placeholder p { color: var(--text-muted); font-size: 0.85rem; }

.gallery-item img { width: 100%; height: 100%; object-fit: cover; }
.gallery-caption {
    position: absolute; bottom: 0; left: 0; right: 0; padding: 16px 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: #fff; font-size: 0.9rem; font-weight: 500;
}

/* ============================================
   Footer
   ============================================ */
.footer { background: var(--bg-dark); padding: 60px 0 30px; color: var(--text-muted); }
.footer-content { display: flex; justify-content: space-between; align-items: center; padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-brand h3 { color: #fff; font-size: 1.2rem; }
.footer-brand p { font-size: 0.9rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom { text-align: center; padding-top: 24px; font-size: 0.8rem; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 968px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; gap: 40px; }
    .hero-name { font-size: 3rem; }
    .hero-name-cn { font-size: 2rem; }
    .hero-cta { justify-content: center; }
    .hero-visual { order: -1; }
    .about-grid { grid-template-columns: 1fr; }
    .resume-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 2.2rem; }
    .page-header h1 { font-size: 2.2rem; }
    .featured-quote p { font-size: 1.3rem; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(10, 10, 26, 0.98); flex-direction: column; padding: 20px; gap: 16px; }
    .nav-menu.active { display: flex; }
    .nav-toggle { display: flex; }
    .hero { padding: 100px 20px 60px; }
    .hero-name { font-size: 2.5rem; }
    .hero-avatar { width: 350px; height: 280px; }
    .avatar-initials { font-size: 2.5rem; }
    .avatar-photo { top: 8px; left: 8px; width: calc(100% - 16px); height: calc(100% - 16px); }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .section { padding: 60px 0; }
    .articles-years { grid-template-columns: repeat(2, 1fr); }
    .achievements-grid { grid-template-columns: 1fr; }
    .article-card { flex-direction: column; align-items: flex-start; gap: 8px; }
    .footer-content { flex-direction: column; gap: 20px; text-align: center; }
    .year-summary { margin: -20px 16px 36px; padding: 24px; }
    .gallery-grid { grid-template-columns: 1fr; }
}