/****************************************************************************
 * 凤凰竞技 · 全站共享样式
 * 文件位置：/assets/site.css
 * 设计主题：烈焰橙红 × 暗夜蓝 · 侧轨导航 · 展览画册式节奏
 ****************************************************************************/

/* ---------- 1. Reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(64px + 16px);
}

body {
  font-family: 'Noto Sans SC Light', 'Noto Sans SC', 'PingFang SC', sans-serif;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.6;
  color: #F5F0E6;
  background: #0D1B2A;
  min-height: 100vh;
  padding-top: 64px;
  overflow-x: hidden;
}

@media (min-width: 1024px) {
  body {
    padding-top: 0;
    padding-left: 280px;
  }
}

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

ul {
  list-style: none;
}

a {
  color: #D4AF37;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #FF5A36;
}

h1, h2, h3, h4, h5, h6 {
  font-family: Impact, 'Noto Sans SC Black', 'Noto Sans SC', sans-serif;
  font-weight: 900;
  line-height: 1.2;
  text-transform: uppercase;
}

/* ---------- 2. CSS 变量 ---------- */
:root {
  --color-primary: #FF5A36;
  --color-navy: #0D1B2A;
  --color-navy-light: #1B263B;
  --color-gold: #D4AF37;
  --color-wine: #722F37;
  --color-indigo: #3B2F78;
  --color-cream: #F5F0E6;
  --color-ink: #0A0A0A;
  --font-headline: Impact, 'Noto Sans SC Black', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC Light', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-accent: 'Noto Serif SC', serif;
  --sidebar-width: 280px;
  --header-height: 64px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --transition: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;
}

/* ---------- 3. 无障碍焦点与减少动效 ---------- */
:focus-visible {
  outline: 3px solid #FF5A36;
  outline-offset: 3px;
  border-radius: 10px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 4. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: #FF5A36;
  color: #fff;
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 999px;
  transform: translateY(-200%);
  transition: transform 0.25s ease;
}
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. 右侧滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  right: 0;
  width: 3px;
  height: 0%;
  background: linear-gradient(to bottom, #FF5A36, #D4AF37);
  border-radius: 3px 0 0 3px;
  z-index: 9998;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(255, 90, 54, 0.6);
}

/* ---------- 6. 全局头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-md);
  background: var(--color-navy);
  border-bottom: 1px solid rgba(255, 90, 54, 0.25);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

@media (min-width: 1024px) {
  .site-header {
    right: auto;
    bottom: 0;
    width: var(--sidebar-width);
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
    border-bottom: none;
    border-right: 1px solid rgba(255, 90, 54, 0.25);
    overflow-y: auto;
  }
}

/* ---------- 7. 品牌 ---------- */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.brand__emblem {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-gold) 100%);
  color: var(--color-navy);
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 900;
  box-shadow: 0 4px 16px rgba(255, 90, 54, 0.4);
  flex-shrink: 0;
}

.brand__group {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-cream);
  white-space: nowrap;
}

.brand__sub {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-gold);
  white-space: nowrap;
}

@media (min-width: 1024px) {
  .brand {
    margin-bottom: var(--space-xl);
  }
  .brand__emblem {
    width: 52px;
    height: 52px;
    font-size: 24px;
  }
  .brand__name {
    font-size: 22px;
  }
}

/* ---------- 8. 侧轨导航 ---------- */
.site-nav {
  display: flex;
  flex-direction: column;
}

@media (min-width: 1024px) {
  .site-nav {
    flex: 1;
    min-height: 0;
  }
}

.nav-title {
  font-family: var(--font-headline);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  display: block;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-list__item {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: rgba(245, 240, 230, 0.82);
  font-size: 15px;
  font-weight: 300;
  letter-spacing: 0.5px;
  position: relative;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(255, 90, 54, 0.06);
  transform: translateX(4px);
}

.nav-link[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(255, 90, 54, 0.1);
  font-weight: 700;
}

.nav-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-md));
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(255, 90, 54, 0.5);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: auto;
  padding: var(--space-sm);
  background: rgba(255, 90, 54, 0.07);
  border: 1px solid rgba(255, 90, 54, 0.15);
  border-radius: var(--radius-md);
}

.nav-status__tag {
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-headline);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
}

.nav-status__text {
  font-size: 12px;
  line-height: 1.4;
  color: rgba(245, 240, 230, 0.6);
}

/* ---------- 9. 移动端导航抽屉 ---------- */
@media (max-width: 1023px) {
  .site-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    padding: var(--space-lg) var(--space-md);
    background: var(--color-navy);
    border-left: 1px solid rgba(255, 90, 54, 0.3);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 1050;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav[data-open] {
    transform: translateX(0);
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.4);
  }
}

/* ---------- 10. 搜索提示条（桌面端） ---------- */
.header-search {
  display: none;
}

@media (min-width: 1024px) {
  .header-search {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: auto;
    padding: 10px 16px;
    background: rgba(245, 240, 230, 0.04);
    border: 1px solid rgba(245, 240, 230, 0.08);
    border-radius: var(--radius-pill);
    color: rgba(245, 240, 230, 0.45);
    font-size: 12px;
    letter-spacing: 0.3px;
    cursor: default;
  }

  .header-search__glyph {
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
  }

  .header-search__glyph::after {
    content: "";
    position: absolute;
    width: 7px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transform: rotate(45deg);
    bottom: -3px;
    right: -5px;
  }

  .header-search__text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

/* ---------- 11. 移动端导航按钮 ---------- */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
  position: relative;
  z-index: 1060;
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: rgba(255, 90, 54, 0.1);
}

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-cream);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}

.nav-toggle:hover .nav-toggle__bars span {
  background: var(--color-primary);
}

.nav-toggle__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--color-primary);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--color-primary);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}

/* ---------- 12. 移动端抽屉遮罩 ---------- */
@media (max-width: 1023px) {
  body::after {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 1040;
  }

  body.nav-open::after {
    opacity: 1;
    pointer-events: auto;
  }
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(245, 240, 230, 0.7);
  position: relative;
}

.footer-accent {
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-gold) 50%, var(--color-indigo) 100%);
}

.footer-grid {
  display: grid;
  gap: var(--space-lg);
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
  padding: var(--space-xl) 0;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
    gap: var(--space-xl);
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-brand__emblem {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-gold) 100%);
  color: var(--color-navy);
  font-family: var(--font-headline);
  font-size: 22px;
  font-weight: 900;
  box-shadow: 0 4px 20px rgba(255, 90, 54, 0.35);
  margin-bottom: var(--space-xs);
}

.footer-brand__name {
  font-family: var(--font-headline);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--color-cream);
}

.footer-brand__slogan {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 600;
  font-size: 13px;
  color: var(--color-gold);
  letter-spacing: 0.5px;
}

.footer-title {
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav__list a {
  color: rgba(245, 240, 230, 0.65);
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
  display: inline-block;
}

.footer-nav__list a:hover {
  color: var(--color-primary);
  padding-left: 6px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}

.footer-contact__mail {
  color: var(--color-gold);
  word-break: break-all;
}

.footer-contact__mail:hover {
  color: var(--color-primary);
}

.footer-contact__phone,
.footer-contact__address {
  color: rgba(245, 240, 230, 0.6);
  line-height: 1.5;
}

.footer-contact__cta {
  margin-top: var(--space-xs);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-headline);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-primary);
  transition: gap var(--transition), color var(--transition);
}

.footer-contact__cta:hover {
  color: var(--color-gold);
  gap: 10px;
}

.footer-legal {
  border-top: 1px solid rgba(245, 240, 230, 0.08);
  background: rgba(0, 0, 0, 0.3);
}

.footer-legal__inner {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
  padding: var(--space-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  text-align: center;
}

.footer-legal__trust {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(245, 240, 230, 0.4);
  max-width: 780px;
}

.footer-legal__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-md);
  font-size: 13px;
  color: rgba(245, 240, 230, 0.65);
}

.footer-legal__meta span[data-year] {
  font-weight: 700;
}

/* ---------- 14. 基础容器与章节 ---------- */
.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}

.container--narrow {
  width: min(860px, 100% - 48px);
}

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

@media (min-width: 1024px) {
  .section {
    padding: var(--space-2xl) 0;
  }
}

.section-head {
  margin-bottom: var(--space-lg);
}

.section-kicker {
  display: block;
  font-family: var(--font-headline);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-family: var(--font-headline);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-cream);
}

.section-desc {
  font-size: 15px;
  color: rgba(245, 240, 230, 0.65);
  max-width: 560px;
  margin-top: var(--space-xs);
}

/* ---------- 15. 网格 ---------- */
.grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 16. 卡片 ---------- */
.card {
  background: var(--color-navy-light);
  border: 1px solid rgba(255, 90, 54, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 90, 54, 0.4);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.card--accent {
  background: linear-gradient(135deg, var(--color-wine) 0%, var(--color-indigo) 100%);
  border-color: transparent;
}

/* ---------- 17. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

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

.btn--primary:hover {
  background: #ff6b45;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 90, 54, 0.4);
}

.btn--outline {
  background: transparent;
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn--outline:hover {
  background: rgba(212, 175, 55, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn--ghost {
  background: rgba(245, 240, 230, 0.05);
  color: var(--color-cream);
}

.btn--ghost:hover {
  background: rgba(245, 240, 230, 0.1);
  color: var(--color-cream);
}

/* ---------- 18. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: 14px;
  color: rgba(245, 240, 230, 0.55);
  margin-bottom: var(--space-md);
}

.breadcrumbs a {
  color: var(--color-gold);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs__sep {
  opacity: 0.5;
}

/* ---------- 19. 图片占位容器 ---------- */
.img-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-navy-light) 0%, var(--color-indigo) 100%);
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(255, 90, 54, 0.1);
}

.img-frame--4-3 {
  aspect-ratio: 4 / 3;
}

.img-frame--square {
  aspect-ratio: 1 / 1;
}

.img-frame--tall {
  aspect-ratio: 3 / 4;
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0,
    transparent 8px,
    rgba(255, 90, 54, 0.07) 8px,
    rgba(255, 90, 54, 0.07) 10px
  );
  pointer-events: none;
  z-index: 1;
}

.img-frame img,
.img-frame > div {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}

/* ---------- 20. 辅助与文本选择 ---------- */
::selection {
  background: rgba(255, 90, 54, 0.35);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-navy);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 90, 54, 0.35);
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 90, 54, 0.6);
}