/* ═══════════════════════════════════════════════
   宜舟家居 · 组件
   components.css — 序幕/光标/导航/按钮/菜单/页脚
   ═══════════════════════════════════════════════ */

/* ═══ 加载序幕 ═══ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--d-bg);
  color: var(--d-gold);
  transition: opacity 0.9s var(--ease-out), visibility 0.9s;
}

.loader.is-done { opacity: 0; visibility: hidden; }

.loader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.loader__mark { position: relative; display: flex; align-items: center; gap: 26px; }

.loader__logo {
  width: 52px;
  height: 52px;
  color: var(--d-gold);
  opacity: 0;
  animation: loader-fade 1.1s var(--ease-out) 0.15s forwards;
}

.loader__brand {
  display: flex;
  gap: 4px;
  font-family: var(--f-serif);
  font-size: 46px;
  font-weight: 600;
  color: var(--d-ink);
  letter-spacing: 0.14em;
}

.loader__char {
  opacity: 0;
  transform: translateY(18px);
  animation: loader-char 0.9s var(--ease-out) forwards;
}
.loader__char:nth-child(1) { animation-delay: 0.35s; }
.loader__char:nth-child(2) { animation-delay: 0.55s; }

.loader__sub {
  font-family: var(--f-latin);
  font-size: 12px;
  letter-spacing: 0.62em;
  color: var(--d-ink-faint);
  opacity: 0;
  animation: loader-fade 1s var(--ease-out) 0.9s forwards;
}

.loader__bar {
  width: 168px;
  height: 1px;
  background: rgba(212, 184, 126, 0.18);
  overflow: hidden;
}

.loader__bar-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--d-gold);
  transform-origin: left;
  transform: scaleX(0);
  animation: loader-bar 1.9s var(--ease-io) 0.2s forwards;
}

@keyframes loader-fade { to { opacity: 1; } }
@keyframes loader-char { to { opacity: 1; transform: none; } }
@keyframes loader-bar { to { transform: scaleX(1); } }

/* ═══ 噪点颗粒 ═══ */
.grain {
  position: fixed;
  inset: -50%;
  z-index: 900;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 0.9s steps(2) infinite;
}

@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(1.2%, -0.8%); }
  100% { transform: translate(-0.6%, 1%); }
}

/* ═══ 自定义光标 ═══ */
/* transform（位移/缩放）由 JS 逐帧接管，CSS 仅过渡颜色与透明度 */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1100;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.cursor.is-visible { opacity: 1; }

.cursor__dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 1;
  transition: background-color 0.35s, opacity 0.3s;
}

.cursor__ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(201, 169, 110, 0.55);
  transition: border-color 0.35s, background-color 0.35s;
}

.cursor__label {
  position: fixed;
  top: 0;
  left: 0;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--forest);
  color: var(--bg);
  font-size: 12px;
  letter-spacing: 0.2em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.3s, background-color 0.35s;
}

.cursor.is-label .cursor__dot { opacity: 0; }
.cursor.is-label .cursor__label { opacity: 1; }

/* 暗色章节里，光标换浅金 */
html[data-active-theme="dark"] .cursor__dot { background: var(--d-gold); }
html[data-active-theme="dark"] .cursor__ring { border-color: rgba(212, 184, 126, 0.6); }
html[data-active-theme="dark"] .cursor__label { background: var(--d-gold); color: var(--d-bg); }

/* 触屏隐藏自定义光标，恢复系统光标 */
@media (hover: none), (pointer: coarse) {
  .cursor { display: none; }
}
html.has-cursor, html.has-cursor a, html.has-cursor button { cursor: none; }

/* ═══ 按钮 ═══ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 34px;
  font-family: var(--f-serif);
  font-size: 15px;
  letter-spacing: 0.22em;
  border-radius: var(--radius);
  overflow: hidden;
  transition: color 0.45s var(--ease-out); /* transform 交给磁吸 JS */
  will-change: transform;
}

.btn--gold {
  color: #F7F5F0;
  background: var(--forest);
  isolation: isolate;
}

.btn--gold::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.45s var(--ease-out);
}

.btn--gold:hover::before { transform: scaleY(1); }
.btn--gold:hover { color: #163026; }

.btn--ghost {
  color: var(--t-ink);
  border: 1px solid var(--t-line);
}

.btn--ghost::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 11px;
  height: 1px;
  background: var(--t-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease-out);
}

.btn--ghost:hover::after { transform: scaleX(1); }

.btn--nav { padding: 10px 24px; font-size: 13px; }
.btn--lg { padding: 19px 46px; font-size: 16px; }

/* ═══ 导航 ═══ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 800;
  padding: 0 var(--gap);
  transition: transform 0.5s var(--ease-out);
}

.nav__inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  transition: height 0.45s var(--ease-out);
}

.nav.is-scrolled {
  background: color-mix(in srgb, var(--t-bg) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--t-line);
}

.nav.is-scrolled .nav__inner { height: 66px; }

.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--t-ink);
}

.nav__logo-mark { width: 30px; height: 30px; color: var(--t-accent); transition: color 0.4s; }

.nav__logo-text {
  font-family: var(--f-serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
}

.nav__logo-text small {
  font-family: var(--f-latin);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.5em;
  color: var(--t-ink-soft);
  opacity: 0.85;
}

.nav__links {
  display: flex;
  gap: clamp(20px, 3vw, 44px);
}

.nav__link {
  position: relative;
  font-family: var(--f-serif);
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--t-ink-soft);
  padding: 6px 2px;
  transition: color 0.35s;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--t-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease-out);
}

.nav__link:hover { color: var(--t-ink); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav__link.is-active { color: var(--t-accent); }

/* 汉堡（移动端） */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 44px;
  height: 44px;
  align-items: center;
}

.burger__line {
  width: 26px;
  height: 1.5px;
  background: var(--t-ink);
  transition: transform 0.45s var(--ease-out), opacity 0.3s;
}

.burger.is-open .burger__line:nth-child(1) { transform: translateY(4.25px) rotate(45deg); }
.burger.is-open .burger__line:nth-child(2) { transform: translateY(-4.25px) rotate(-45deg); }

/* ═══ 移动端全屏菜单 ═══ */
.menu {
  position: fixed;
  inset: 0;
  z-index: 790;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8vh;
  padding: 100px var(--gap) 48px;
  background: var(--d-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.menu.is-open { opacity: 1; visibility: visible; }

.menu__links { display: flex; flex-direction: column; gap: 6px; }

.menu__link {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 14px 0;
  font-family: var(--f-serif);
  font-size: clamp(28px, 8vw, 40px);
  color: var(--d-ink);
  letter-spacing: 0.2em;
  border-bottom: 1px solid var(--d-line);
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out), color 0.3s;
}

.menu__link em {
  font-size: 14px;
  color: var(--d-gold);
  letter-spacing: 0.1em;
}

.menu__link:active { color: var(--d-gold); }

.menu.is-open .menu__link { opacity: 1; transform: none; }
.menu.is-open .menu__link:nth-child(1) { transition-delay: 0.1s; }
.menu.is-open .menu__link:nth-child(2) { transition-delay: 0.16s; }
.menu.is-open .menu__link:nth-child(3) { transition-delay: 0.22s; }
.menu.is-open .menu__link:nth-child(4) { transition-delay: 0.28s; }
.menu.is-open .menu__link:nth-child(5) { transition-delay: 0.34s; }
.menu.is-open .menu__link:nth-child(6) { transition-delay: 0.4s; }

.menu__foot {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.menu__foot p {
  font-family: var(--f-latin);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--d-ink-faint);
}

/* ═══ 跑马灯 ═══ */
.marquee {
  overflow: hidden;
  padding: 26px 0;
  border-top: 1px solid var(--t-line);
  border-bottom: 1px solid var(--t-line);
  background: var(--t-bg);
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee-run 34s linear infinite;
}

.marquee__item {
  font-family: var(--f-serif);
  font-size: clamp(15px, 1.4vw, 20px);
  letter-spacing: 0.5em;
  color: var(--t-ink-faint);
  white-space: nowrap;
  padding-right: 0.5em;
}

.marquee__item i { color: var(--gold); font-size: 0.7em; padding: 0 0.8em; vertical-align: 0.12em; }

@keyframes marquee-run {
  to { transform: translateX(-50%); }
}

/* ═══ 页脚 ═══ */
.footer {
  position: relative;
  background: var(--d-bg);
  color: var(--d-ink);
  padding: clamp(64px, 10vh, 120px) var(--gap) 40px;
  overflow: hidden;
}

.footer__mark {
  font-family: var(--f-serif);
  font-size: clamp(120px, 26vw, 420px);
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: 0.06em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(212, 184, 126, 0.16);
  user-select: none;
  pointer-events: none;
}

.footer__inner {
  max-width: var(--w-content);
  margin: clamp(-60px, -8vw, -140px) auto 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(20px, 4vw, 56px);
  padding-top: clamp(48px, 8vw, 100px);
}

.footer__nav a {
  font-family: var(--f-serif);
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--d-ink-soft);
  transition: color 0.3s;
}

.footer__nav a:hover { color: var(--d-gold); }

.footer__top {
  text-align: center;
  font-family: var(--f-latin);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--d-ink-faint);
  transition: color 0.3s;
}

.footer__top:hover { color: var(--d-gold); }

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 26px;
  border-top: 1px solid var(--d-line);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--d-ink-faint);
}

.footer__credit a {
  color: var(--d-gold);
  border-bottom: 1px solid rgba(212, 184, 126, 0.35);
  padding-bottom: 1px;
  transition: border-color 0.3s, color 0.3s;
}

.footer__credit a:hover { color: #E5CFA0; border-color: #E5CFA0; }

/* ═══ 响应式 ═══ */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav .btn--nav { display: none; }
  .burger { display: flex; }

  .nav.is-scrolled { background: color-mix(in srgb, var(--t-bg) 92%, transparent); }

  .footer__meta { flex-direction: column; align-items: center; text-align: center; }
}