/* ============================================================
 *  MyPersonalNet - 样式表
 *  纯 CSS，无框架依赖
 * ============================================================ */

/* ---------- CSS 变量（由 JS 动态注入主题色） ---------- */
:root {
  --primary: #8b7355;
  --accent: #d4a574;
  --bg: #faf8f560;
  --text: #2c2420;
  --text-light: #6b5d52;
  --nav-bg: rgba(250, 248, 245, 0.534);
  --card-bg: #ffffff5e;
  --border: rgba(139, 115, 85, 0.15);
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.15);
  --radius: 12px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-sans: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-serif: "Georgia", "Songti SC", "SimSun", serif;
}

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

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

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

/* 全站底层壁纸：把 hero 背景固定铺到 body 后面，
   下半透明白色背景后，壁纸能透过来 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("../assets/images/hero/cover1.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

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

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
}
.nav-logo:hover { color: var(--primary); }

.nav-logo span {
  color: var(--accent);
  font-size: 0.7rem;
  display: block;
  letter-spacing: 2px;
  font-family: var(--font-sans);
  font-weight: 400;
  margin-top: -2px;
}

.nav-menu {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-light);
  position: relative;
  padding: 0.3rem 0;
  transition: var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-social {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-social a {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-light);
  transition: var(--transition);
}
.nav-social a:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}
.nav-social a.social-qr-link { cursor: pointer; }

.nav-social svg { width: 18px; height: 18px; }

/* 汉堡菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 5px;
}
.nav-toggle span {
  width: 26px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero 封面 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  to { transform: scale(1.15); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding: 0 2rem;
  animation: heroFadeIn 1.5s ease;
}

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

.hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 0.5rem;
  text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.hero-content .hero-subtitle {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  letter-spacing: 6px;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 1.5rem;
}

.hero-content .hero-desc {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  max-width: 500px;
  margin: 0 auto;
  opacity: 0.9;
  line-height: 1.8;
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: #fff;
  text-align: center;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero-scroll span {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

.hero-scroll svg {
  width: 24px; height: 24px;
  margin: 0 auto;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 6rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.section-header .section-sub {
  font-size: 0.85rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.section-header .section-desc {
  font-size: 1rem;
  color: var(--text-light);
  margin-top: 0.8rem;
}

.section-header .section-divider {
  width: 60px; height: 3px;
  background: var(--accent);
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* ---------- 分类筛选 ---------- */
.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  font-size: 0.9rem;
  color: var(--text-light);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 30px;
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ---------- 作品卡片网格 ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.8rem;
}

.gallery-card {
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: var(--transition);
  animation: cardFadeIn 0.6s ease both;
}

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

.gallery-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.card-cover {
  position: relative;
  width: 100%;
  height: 260px;
  overflow: hidden;
}

.card-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.card-cover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.gallery-card:hover .card-cover-overlay {
  opacity: 1;
}

.card-cover-overlay span {
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 2px;
  padding: 0.6rem 1.8rem;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 30px;
  backdrop-filter: blur(4px);
}

.card-tag {
  position: absolute;
  top: 1rem; left: 1rem;
  padding: 0.25rem 0.8rem;
  background: rgba(255,255,255,0.9);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
  z-index: 1;
}

.card-body {
  padding: 1.3rem 1.5rem;
}

.card-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.card-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-meta svg { width: 13px; height: 13px; opacity: 0.6; }

/* ---------- 灯箱（作品详情弹窗） ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.open {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  width: 90%;
  max-width: 1000px;
  max-height: 90vh;
  background: rgba(255, 255, 255, 0.808);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.lightbox.open .lightbox-content {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  z-index: 10;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: var(--transition);
}
.lightbox-close:hover {
  background: rgba(255,255,255,0.25);
  transform: rotate(90deg);
}

.lightbox-body {
  overflow-y: auto;
  max-height: 90vh;
}

.lightbox-header {
  padding: 2rem 2.5rem 1rem;
}

.lightbox-header h3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.lightbox-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-light);
}

.lightbox-meta span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.lightbox-meta .tag {
  background: var(--accent);
  color: #fff;
  padding: 0.2rem 0.8rem;
  border-radius: 20px;
  font-size: 0.75rem;
}

.lightbox-desc {
  padding: 0 2.5rem 1.5rem;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

.lightbox-images {
  padding: 0 2.5rem 2.5rem;
  display: grid;
  gap: 1rem;
}

.lightbox-images img {
  width: 100%;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}
.lightbox-images img:hover {
  opacity: 0.85;
}

/* ---------- 全屏图片查看器 ---------- */
.image-viewer {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: rgba(0,0,0,0.95);
  display: none;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

.image-viewer.open {
  display: flex;
}

.image-viewer img {
  max-width: 90%;
  max-height: 90vh;
  border-radius: 4px;
}

.image-viewer-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.212);
  color: #ffffff6b;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.image-viewer-close:hover {
  background: rgba(255,255,255,0.3);
}

/* ---------- 关于页 ---------- */
.about-section {
  background: linear-gradient(180deg, rgba(250, 248, 245, 0.55) 0%, rgba(240, 236, 230, 0.55) 100%);
  max-width: none;
  padding: 6rem 2rem;
}

.about-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
  margin-top: 3rem;
}

.about-avatar {
  position: relative;
}

.about-avatar img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 1;
  object-fit: cover;
}

.about-avatar::before {
  content: "";
  position: absolute;
  top: -15px; left: -15px;
  width: 100%; height: 100%;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  z-index: -1;
}

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.9;
}

.about-text p:first-child {
  font-size: 1.15rem;
  color: var(--text);
  font-weight: 500;
}

/* 技能条 */
.about-skills {
  margin-top: 2.5rem;
}

.about-skills h4 {
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 1.2rem;
}

.skill-item {
  margin-bottom: 1rem;
}

.skill-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 0.3rem;
}

.skill-bar {
  height: 6px;
  background: #e8e2da;
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 数据统计 */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

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

.stat-value {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 0.3rem;
}

/* 联系方式 */
.about-contact {
  margin-top: 3rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.459);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-contact h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.9rem;
  color: var(--text-light);
}

.contact-item svg {
  width: 20px; height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}

/* ---------- 页脚 ---------- */
.footer {
  background: #2c2420;
  color: #d4c8be;
  text-align: center;
  padding: 3rem 2rem;
}

.footer-text {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #d4c8be;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}
.footer-social a.social-qr-link { cursor: pointer; }

.footer-social svg { width: 18px; height: 18px; }

.footer-copyright {
  font-size: 0.8rem;
  opacity: 0.5;
}

.footer-icp {
  font-size: 0.75rem;
  opacity: 0.4;
  margin-top: 0.3rem;
}

.footer-icp a { color: inherit; }

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  z-index: 999;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

.back-to-top svg { width: 22px; height: 22px; }

/* ---------- 滚动动画 ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
 *  响应式适配
 * ============================================================ */

/* 平板 */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .about-avatar {
    max-width: 300px;
    margin: 0 auto;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.2rem;
  }

  .section { padding: 4rem 1.5rem; }
}

/* 手机 */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-150%);
    transition: transform 0.4s ease;
    z-index: 999;
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-social {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content h1 {
    letter-spacing: 2px;
  }

  .hero-content .hero-subtitle {
    letter-spacing: 3px;
  }

  .section {
    padding: 3.5rem 1rem;
  }

  .section-header { margin-bottom: 2.5rem; }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .lightbox-content {
    width: 95%;
  }

  .lightbox-header,
  .lightbox-desc,
  .lightbox-images {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .lightbox-header { padding-top: 1.5rem; }
  .lightbox-images { padding-bottom: 1.5rem; }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .stat-value { font-size: 1.8rem; }

  .contact-list {
    grid-template-columns: 1fr;
  }

  .about-contact { padding: 1.5rem; }

  .back-to-top {
    bottom: 1.5rem; right: 1.5rem;
    width: 42px; height: 42px;
  }

  .nav-inner { padding: 0 1.2rem; }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .filter-bar {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.4rem 1rem;
    font-size: 0.82rem;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }
}