/* ============================================================
   NEXUS 个人综合博客站 - 全局样式
   设计风格：深宇宙科技感 · 深蓝 + 科技银 + 霓虹点缀
   ============================================================ */

/* ---- CSS 变量 ---- */
:root {
  --bg-deep:       #040d1a;
  --bg-card:       #071428;
  --bg-surface:    #0a1e35;
  --bg-hover:      #0d2444;

  --primary:       #00d4ff;
  --primary-glow:  rgba(0, 212, 255, 0.3);
  --secondary:     #0080ff;
  --accent:        #ff6b6b;
  --accent-green:  #a8ff78;
  --accent-yellow: #ffd93d;
  --neon-purple:   #b945ff;

  --text-primary:  #e8f4fd;
  --text-secondary:#8baabf;
  --text-muted:    #4a6a82;

  --border:        rgba(0, 212, 255, 0.15);
  --border-hover:  rgba(0, 212, 255, 0.5);

  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;

  --font-heading:  'Orbitron', monospace;
  --font-body:     'Noto Sans SC', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --transition:    cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.2s var(--transition);
  --transition-med:  0.4s var(--transition);
  --transition-slow: 0.7s var(--transition);

  --shadow-sm:     0 2px 12px rgba(0,0,0,0.3);
  --shadow-md:     0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg:     0 20px 60px rgba(0,0,0,0.5);
  --shadow-neon:   0 0 20px var(--primary-glow), 0 0 60px rgba(0,212,255,0.1);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--bg-deep);
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  cursor: none;
}

body.loading { overflow: hidden; }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: none; border: none; background: none; font-family: inherit; }

/* ---- 加载屏幕 ---- */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg-deep);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-inner { text-align: center; }
.loader-logo {
  font-family: var(--font-heading);
  font-size: 3rem; font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.3em;
  text-shadow: var(--shadow-neon);
  animation: pulse-glow 1.5s ease-in-out infinite;
  margin-bottom: 2rem;
}
.loader-bar {
  width: 240px; height: 2px;
  background: var(--bg-surface);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto 1rem;
}
.loader-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--secondary), var(--primary));
  border-radius: 2px;
  animation: loader-progress 1.8s ease-in-out forwards;
}
.loader-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

@keyframes loader-progress { from { width: 0; } to { width: 100%; } }
@keyframes pulse-glow {
  0%, 100% { text-shadow: 0 0 20px var(--primary-glow); }
  50% { text-shadow: 0 0 40px var(--primary-glow), 0 0 80px rgba(0,212,255,0.2); }
}

/* ---- 页面过渡 ---- */
#page-transition {
  position: fixed; inset: 0; z-index: 9998;
  background: var(--bg-deep);
  transform: scaleX(0); transform-origin: right;
  pointer-events: none;
}
#page-transition.active { transform: scaleX(1); transform-origin: left; transition: transform 0.4s var(--transition); }
#page-transition.exit { transform: scaleX(0); transform-origin: right; transition: transform 0.4s var(--transition); }

/* ---- 自定义鼠标 ---- */
#cursor {
  position: fixed; z-index: 9990;
  width: 36px; height: 36px;
  border: 1.5px solid var(--primary);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, opacity 0.2s, border-color 0.2s;
  mix-blend-mode: screen;
}
#cursor-dot {
  position: absolute; top: 50%; left: 50%;
  width: 4px; height: 4px;
  background: var(--primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.15s;
}
body:has(a:hover) #cursor,
body:has(button:hover) #cursor { width: 56px; height: 56px; border-color: var(--accent); }

/* ---- 导航栏 ---- */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2.5rem;
  height: 64px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-med), border-color var(--transition-med), backdrop-filter var(--transition-med);
}
#navbar.scrolled {
  background: rgba(4, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem; font-weight: 900;
  letter-spacing: 0.2em;
  color: var(--text-primary);
  user-select: none;
}
.logo-bracket { color: var(--primary); }
.logo-text { margin: 0 4px; }
.nav-links {
  display: flex; gap: 2.5rem;
}
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem; font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  position: relative;
  transition: color var(--transition-fast);
  text-transform: uppercase;
}
.nav-link::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-actions { display: flex; gap: 0.75rem; align-items: center; }
.avatar-wrapper {
  display: flex; align-items: center; gap: 0.5rem;
  cursor: none;
}
#nav-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  border: 1.5px solid var(--primary);
  object-fit: cover;
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; }
.nav-toggle span {
  display: block; width: 22px; height: 1.5px;
  background: var(--text-primary);
  transition: transform 0.3s ease;
}

/* ---- 通用按钮 ---- */
.btn-neon {
  display: inline-flex; align-items: center; gap: 0.4em;
  padding: 0.55em 1.4em;
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  position: relative; overflow: hidden;
  transition: color var(--transition-fast), box-shadow var(--transition-fast);
}
.btn-neon::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--primary);
  transform: translateX(-105%);
  transition: transform 0.3s var(--transition);
  z-index: -1;
}
.btn-neon:hover { color: var(--bg-deep); box-shadow: var(--shadow-neon); }
.btn-neon:hover::before { transform: translateX(0); }
.btn-neon.full-width { width: 100%; justify-content: center; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.4em;
  padding: 0.55em 1.4em;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.btn-ghost:hover { border-color: var(--border-hover); color: var(--text-primary); }

/* ---- 容器 ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ---- 区块通用 ---- */
.section { padding: 100px 0; position: relative; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary) 40%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Hero ---- */
#hero {
  position: relative;
  height: 100vh; min-height: 700px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
#particle-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0.7;
}
.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  padding: 0 1rem;
}
.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fade-up 0.8s var(--transition) 0.3s forwards;
}
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.2rem;
  min-height: 1.2em;
}
.hero-name {
  background: linear-gradient(135deg, #fff 30%, var(--primary) 70%, var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-slogan {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  min-height: 1.5em;
  letter-spacing: 0.05em;
}
.hero-cta {
  display: flex; gap: 1rem;
  justify-content: center; flex-wrap: wrap;
  opacity: 0;
  animation: fade-up 0.8s var(--transition) var(--delay, 0.6s) forwards;
}
.hero-scroll-hint {
  position: absolute; bottom: 2.5rem; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  animation: bounce 2s ease-in-out infinite;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, transparent, var(--primary));
}
.hero-stats {
  position: absolute; bottom: 2.5rem; right: 3rem;
  display: flex; flex-direction: column; gap: 1rem;
  z-index: 2;
}
.stat-item {
  display: flex; flex-direction: column; align-items: flex-end;
  opacity: 0;
  animation: fade-left 0.8s var(--transition) 1.2s forwards;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: 1.5rem; font-weight: 700;
  color: var(--primary);
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ---- About ---- */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 5rem;
  align-items: center;
}
.about-avatar-wrap {
  position: relative;
  width: 260px; height: 260px;
  margin: 0 auto;
}
.about-avatar {
  width: 100%; height: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 2px solid var(--border);
  position: relative; z-index: 1;
  transition: transform var(--transition-med);
}
.about-avatar-wrap:hover .about-avatar { transform: scale(1.03); }
.avatar-glow {
  position: absolute; inset: -8px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  border-radius: var(--radius-lg);
  animation: pulse-glow 3s ease-in-out infinite;
}
.avatar-ring {
  position: absolute; inset: -16px;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) + 8px);
  animation: rotate-ring 10s linear infinite;
}
.avatar-ring::after {
  content: '';
  position: absolute; top: -3px; left: 50%;
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
}
@keyframes rotate-ring { to { transform: rotate(360deg); } }

.about-text {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  min-height: 5em;
}
.skills-wrap {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-bottom: 2rem;
}
.skill-tag {
  padding: 0.35em 0.9em;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  letter-spacing: 0.05em;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
.skill-tag:hover {
  background: rgba(0, 212, 255, 0.15);
  box-shadow: 0 0 10px var(--primary-glow);
}
.about-social { display: flex; gap: 0.75rem; }
.social-btn {
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.social-btn svg { width: 18px; height: 18px; }
.social-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

/* ---- Modules ---- */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.module-card {
  position: relative; overflow: hidden;
  padding: 2.5rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; align-items: flex-start; gap: 1.5rem;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.module-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 20px var(--primary-glow);
}
.module-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at bottom left, rgba(0,212,255,0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-med);
}
.module-card:hover .module-bg { opacity: 1; }
.module-icon {
  width: 52px; height: 52px; flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.module-icon svg { width: 24px; height: 24px; }
.module-card:hover .module-icon {
  border-color: currentColor;
  box-shadow: 0 0 12px currentColor;
}
.module-content { flex: 1; }
.module-content h3 {
  font-family: var(--font-heading);
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}
.module-content p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}
.module-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--primary);
  letter-spacing: 0.05em;
}
.module-arrow {
  font-size: 1.2rem;
  color: var(--text-muted);
  align-self: center;
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.module-card:hover .module-arrow { color: var(--primary); transform: translateX(4px); }

/* ---- Latest ---- */
.latest-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
}
.latest-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}
.block-header {
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.block-icon { font-size: 1.1rem; }
.block-header h3 {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.1em;
}
.block-more {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  white-space: nowrap;
}
.block-more:hover { color: var(--primary); }

/* 文章列表 */
.article-list { display: flex; flex-direction: column; gap: 1rem; }
.article-item {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.article-item:last-child { border-bottom: none; padding-bottom: 0; }
.article-item h4 {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  line-height: 1.4;
  transition: color var(--transition-fast);
}
.article-item:hover h4 { color: var(--primary); }
.article-item .meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex; gap: 1rem;
}

/* 照片缩略 */
.photo-grid-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.photo-thumb {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: none;
}
.photo-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-med), filter var(--transition-med);
  filter: blur(4px) brightness(0.8);
}
.photo-thumb img.loaded { filter: blur(0) brightness(1); }
.photo-thumb:hover img { transform: scale(1.1); }

/* 作品预览 */
.project-preview-card {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: border-color var(--transition-fast);
}
.project-preview-card:hover { border-color: var(--border-hover); }
.project-preview-img {
  aspect-ratio: 16/9;
  background: var(--bg-surface);
  overflow: hidden;
}
.project-preview-img img { width: 100%; height: 100%; object-fit: cover; }
.project-preview-info { padding: 1rem; }
.project-preview-info h4 {
  font-size: 0.9rem;
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.project-preview-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ---- Friends ---- */
.friends-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.friend-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.friend-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md), 0 0 15px var(--primary-glow);
}
.friend-avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 0.75rem;
  border: 2px solid var(--border);
  transition: border-color var(--transition-fast);
}
.friend-card:hover .friend-avatar { border-color: var(--primary); }
.friend-name {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.friend-desc { font-size: 0.75rem; color: var(--text-muted); line-height: 1.5; }
.friend-apply { text-align: center; }

/* ---- Modal ---- */
.modal {
  position: fixed; inset: 0; z-index: 500;
  display: none; align-items: center; justify-content: center;
}
.modal.open { display: flex; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(4, 13, 26, 0.85);
  backdrop-filter: blur(8px);
}
.modal-box {
  position: relative; z-index: 1;
  width: min(480px, 92vw);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: modal-in 0.3s var(--transition);
}
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
}
.modal-close {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.modal-close:hover { color: var(--accent); border-color: var(--accent); }
.modal-body { padding: 1.75rem; display: flex; flex-direction: column; gap: 1.25rem; }

/* ---- 表单 ---- */
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.form-input {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65em 1em;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  resize: vertical;
}
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-input::placeholder { color: var(--text-muted); }

/* ---- Footer ---- */
#footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem; font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}
.footer-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.footer-license {
  display: flex; align-items: center; gap: 0.75rem;
  flex-wrap: wrap;
}
.footer-license span {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.footer-links h4, .footer-stats h4 {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--primary); }
.footer-stat-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.f-stat { display: flex; flex-direction: column; gap: 2px; }
.f-stat span {
  font-family: var(--font-heading);
  font-size: 1.2rem; font-weight: 700;
  color: var(--primary);
}
.f-stat small { font-size: 0.7rem; color: var(--text-muted); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  flex-wrap: wrap; gap: 0.5rem;
}

/* ---- Skeletons ---- */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton-item, .skeleton-photo, .skeleton-card {
  background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-hover) 50%, var(--bg-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
.skeleton-item { height: 64px; margin-bottom: 0.75rem; }
.skeleton-photo { aspect-ratio: 1; border-radius: var(--radius-sm); }
.skeleton-card { height: 200px; }

/* ---- Scroll Reveal 动效 ---- */
.reveal-up, .reveal-left, .reveal-right {
  opacity: 0;
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  transition-delay: var(--delay, 0s);
}
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-up.visible, .reveal-left.visible, .reveal-right.visible {
  opacity: 1;
  transform: translate(0);
}

/* ---- 通用动画 ---- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-left {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

/* ---- Toast 提示 ---- */
#toast-container {
  position: fixed; bottom: 2rem; right: 2rem;
  z-index: 9000;
  display: flex; flex-direction: column; gap: 0.75rem;
  pointer-events: none;
}
.toast {
  padding: 0.75em 1.25em;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-primary);
  backdrop-filter: blur(8px);
  animation: toast-in 0.3s var(--transition);
  pointer-events: auto;
  box-shadow: var(--shadow-md);
}
.toast.success { border-left-color: var(--accent-green); }
.toast.error { border-left-color: var(--accent); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ========== BLOG PAGE ========== */
.blog-hero {
  padding: 140px 0 80px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.blog-filters {
  display: flex; gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 2rem 0;
}
.filter-btn {
  padding: 0.4em 1em;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  cursor: none;
  transition: all var(--transition-fast);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(0,212,255,0.1);
  border-color: var(--primary);
  color: var(--primary);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
  padding: 2rem 0;
}
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  cursor: none;
}
.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 20px var(--primary-glow);
  border-color: var(--border-hover);
}
.blog-card-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-surface);
}
.blog-card-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), filter var(--transition-med);
  filter: blur(4px);
}
.blog-card-cover img.loaded { filter: none; }
.blog-card:hover .blog-card-cover img { transform: scale(1.07); }
.blog-card-body { padding: 1.5rem; }
.blog-card-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
.blog-tag {
  padding: 0.2em 0.6em;
  background: rgba(0,212,255,0.08);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--primary);
  letter-spacing: 0.05em;
}
.blog-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.4;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}
.blog-card:hover h3 { color: var(--primary); }
.blog-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1rem; }
.blog-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}
.pagination {
  display: flex; gap: 0.5rem;
  justify-content: center;
  padding: 2.5rem 0;
}
.page-btn {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: none;
  transition: all var(--transition-fast);
}
.page-btn:hover, .page-btn.active {
  background: rgba(0,212,255,0.1);
  border-color: var(--primary);
  color: var(--primary);
}

/* ========== GALLERY PAGE ========== */
.gallery-tabs {
  display: flex; gap: 0.5rem;
  justify-content: center;
  margin: 2rem 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.35rem;
  width: fit-content;
  margin-inline: auto;
}
.gallery-tab {
  padding: 0.5em 1.5em;
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  cursor: none;
  transition: all var(--transition-fast);
}
.gallery-tab.active {
  background: var(--primary);
  color: var(--bg-deep);
  font-weight: 700;
}
.masonry-grid {
  columns: 4;
  column-gap: 1rem;
}
.masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: zoom-in;
  position: relative;
}
.masonry-item img {
  width: 100%;
  display: block;
  transition: transform var(--transition-med);
  filter: blur(6px) brightness(0.7);
}
.masonry-item img.loaded { filter: none; }
.masonry-item:hover img { transform: scale(1.05); }

/* Lightbox */
#lightbox {
  position: fixed; inset: 0; z-index: 800;
  display: none; align-items: center; justify-content: center;
  background: rgba(4,13,26,0.95);
  backdrop-filter: blur(12px);
}
#lightbox.open { display: flex; }
#lightbox img {
  max-width: 90vw; max-height: 90vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.3s var(--transition);
}
.lightbox-close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  width: 44px; height: 44px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  color: white; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  cursor: none;
  transition: background var(--transition-fast);
}
.lightbox-close:hover { background: rgba(255,255,255,0.1); }

/* ========== PROJECTS PAGE ========== */
.projects-filters {
  display: flex; gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 2rem 0;
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  cursor: none;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(255,217,61,0.15);
  border-color: rgba(255,217,61,0.3);
}
.project-card-cover {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-surface);
  position: relative;
}
.project-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.project-card:hover .project-card-cover img { transform: scale(1.06); }
.project-type-badge {
  position: absolute; top: 0.75rem; right: 0.75rem;
  padding: 0.25em 0.7em;
  background: rgba(4,13,26,0.8);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-yellow);
  letter-spacing: 0.05em;
}
.project-card-body { padding: 1.5rem; }
.project-card h3 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}
.project-card:hover h3 { color: var(--accent-yellow); }
.project-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; line-height: 1.6; }
.tech-stack { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-bottom: 1rem; }
.tech-badge {
  padding: 0.2em 0.5em;
  background: rgba(255,217,61,0.06);
  border: 1px solid rgba(255,217,61,0.2);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-yellow);
}
.project-card-stats {
  display: flex; gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

/* ========== ADMIN PAGE ========== */
.admin-layout {
  display: flex; min-height: 100vh;
}
.admin-sidebar {
  width: 240px; flex-shrink: 0;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 2rem 0;
  position: fixed; top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 50;
}
.admin-logo {
  padding: 0 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  color: var(--primary);
}
.admin-logo small { display: block; font-size: 0.6rem; color: var(--text-muted); margin-top: 0.2rem; letter-spacing: 0.2em; }
.admin-nav-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.7rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  cursor: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}
.admin-nav-item::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--primary);
  transform: scaleY(0);
  transition: transform var(--transition-fast);
}
.admin-nav-item:hover, .admin-nav-item.active {
  color: var(--text-primary);
  background: rgba(0,212,255,0.05);
}
.admin-nav-item:hover::before, .admin-nav-item.active::before { transform: scaleY(1); }
.admin-nav-item svg { width: 16px; height: 16px; }
.admin-main {
  flex: 1;
  margin-left: 240px;
  padding: 2rem;
}
.admin-topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.admin-topbar h1 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}
.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color var(--transition-fast);
}
.stat-card:hover { border-color: var(--border-hover); }
.stat-card-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.stat-card-value {
  font-family: var(--font-heading);
  font-size: 2rem; font-weight: 700;
  color: var(--primary);
}
.stat-card-change {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-green);
  margin-top: 0.25rem;
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.admin-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.admin-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid rgba(0,212,255,0.05);
  color: var(--text-secondary);
  transition: background var(--transition-fast);
}
.admin-table tr:hover td { background: rgba(0,212,255,0.03); }
.status-badge {
  padding: 0.2em 0.6em;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
}
.status-active { background: rgba(168,255,120,0.1); color: var(--accent-green); border: 1px solid rgba(168,255,120,0.3); }
.status-pending { background: rgba(255,217,61,0.1); color: var(--accent-yellow); border: 1px solid rgba(255,217,61,0.3); }
.status-banned { background: rgba(255,107,107,0.1); color: var(--accent); border: 1px solid rgba(255,107,107,0.3); }
.admin-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.admin-section-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.admin-section-header h3 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}
.admin-section-body { padding: 1.5rem; }

/* ========== LOGIN / REGISTER ========== */
.auth-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 2rem;
  position: relative;
}
.auth-box {
  width: min(420px, 100%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative; z-index: 1;
  animation: modal-in 0.5s var(--transition);
}
.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-logo .logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.3em;
  text-shadow: var(--shadow-neon);
}
.auth-logo p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}
.auth-form { display: flex; flex-direction: column; gap: 1rem; }
.auth-switch {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.auth-switch a { color: var(--primary); }
.input-with-icon { position: relative; }
.input-icon {
  position: absolute; left: 0.875rem; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}
.input-with-icon .form-input { padding-left: 2.5rem; }
.form-error {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  display: none;
}
.form-error.show { display: block; }
.btn-loading {
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .modules-grid { grid-template-columns: 1fr; }
  .latest-grid { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-avatar-wrap { width: 200px; height: 200px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .masonry-grid { columns: 3; }
}
@media (max-width: 768px) {
  #navbar { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .hero-stats { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .admin-sidebar { transform: translateX(-100%); transition: transform 0.3s; }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .stat-cards { grid-template-columns: 1fr 1fr; }
  .masonry-grid { columns: 2; }
  .section { padding: 70px 0; }
}
@media (max-width: 480px) {
  .modules-grid { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: 1fr; }
  .masonry-grid { columns: 1; }
  .hero-title { font-size: 2rem; }
  .blog-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}


/* ---- 发布弹窗增强 ---- */
.modal-box-wide {
  width: min(980px, 94vw);
  max-height: 90vh;
  overflow-y: auto;
}

.publish-target-switch {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: .25rem;
}

.publish-target-tab {
  padding: .6rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  background: transparent;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  transition: border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.publish-target-tab.active,
.publish-target-tab:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--shadow-neon);
}

.publish-target-hint {
  color: var(--text-muted);
  font-size: .85rem;
  margin-bottom: .75rem;
}

.publish-file-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  align-items: center;
}

.publish-file-row .btn-ghost {
  white-space: nowrap;
}

.publish-url-input {
  min-width: 0;
}

.publish-editor-toolbar {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: .75rem;
}

.publish-content-input {
  min-height: 260px;
}

.md-editor-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: stretch;
}

.md-preview {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  overflow: auto;
  color: var(--text-primary);
  min-height: 260px;
}

.md-preview img {
  max-width: 100%;
  border-radius: var(--radius-sm);
}

@media (max-width: 900px) {
  .md-editor-wrap {
    grid-template-columns: 1fr;
  }
  .publish-file-row {
    grid-template-columns: 1fr;
  }
}