/* ============================================================
   摩登紀 ATELIER MODERNE — Art Deco 設計系統
   建築與室內設計事務所
   ============================================================ */

:root {
  --emerald-900: #07211d;
  --emerald-800: #0b2f29;
  --emerald-700: #11423a;
  --emerald-600: #18564b;
  --gold-500: #c9a24b;
  --gold-400: #d8b969;
  --gold-300: #e7d3a1;
  --cream-100: #f5efe1;
  --cream-200: #ece3cd;
  --ink-900: #061513;
  --paper: #faf6ec;
  --shadow: rgba(6, 21, 19, 0.28);

  --font-display: "Poiret One", "Noto Serif TC", serif;
  --font-accent: "Cinzel", "Noto Serif TC", serif;
  --font-serif: "Cormorant Garamond", "Noto Serif TC", serif;
  --font-body: "Noto Sans TC", system-ui, sans-serif;

  --maxw: 1180px;
  --gut: clamp(1.2rem, 4vw, 3rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--emerald-900);
  background: var(--paper);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--gut); padding-right: var(--gut); }

/* ---------- 排版 ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.18; letter-spacing: .02em; }

.eyebrow {
  font-family: var(--font-accent);
  text-transform: uppercase;
  letter-spacing: .42em;
  font-size: .72rem;
  color: var(--gold-500);
  display: inline-block;
  margin-bottom: 1.1rem;
}

.section { padding: clamp(3.5rem, 9vw, 7rem) 0; }
.section--dark { background: var(--emerald-800); color: var(--cream-100); }
.section--ink { background: var(--ink-900); color: var(--cream-100); }

.lead { font-family: var(--font-serif); font-size: clamp(1.25rem, 2.4vw, 1.7rem); line-height: 1.6; color: var(--emerald-700); }
.section--dark .lead, .section--ink .lead { color: var(--gold-300); }

p { margin-bottom: 1.1rem; }

/* ---------- 裝飾元素 ---------- */
.deco-rule { display: flex; align-items: center; gap: 14px; margin: 1.6rem 0; }
.deco-rule::before, .deco-rule::after { content: ""; height: 1px; background: var(--gold-500); flex: 1; opacity: .6; }
.deco-rule .diamond { width: 9px; height: 9px; background: var(--gold-500); transform: rotate(45deg); }

.sunburst {
  width: 64px; height: 64px; margin: 0 auto 1.4rem;
  background:
    repeating-conic-gradient(from 0deg at 50% 100%,
      var(--gold-500) 0deg 6deg, transparent 6deg 12deg);
  -webkit-mask: radial-gradient(circle at 50% 100%, transparent 0 12px, #000 12px);
          mask: radial-gradient(circle at 50% 100%, transparent 0 12px, #000 12px);
  clip-path: polygon(0 100%, 100% 100%, 50% 0);
}

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-accent);
  text-transform: uppercase;
  letter-spacing: .28em;
  font-size: .76rem;
  padding: .95rem 2.2rem;
  border: 1px solid var(--gold-500);
  color: var(--gold-400);
  background: transparent;
  transition: all .35s ease;
  position: relative;
}
.btn:hover { background: var(--gold-500); color: var(--ink-900); }
.btn--solid { background: var(--gold-500); color: var(--ink-900); }
.btn--solid:hover { background: var(--gold-400); }
.btn--dark { border-color: var(--emerald-700); color: var(--emerald-800); }
.btn--dark:hover { background: var(--emerald-800); color: var(--gold-300); }

/* ---------- 導覽列 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 33, 29, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(201, 162, 75, 0.35);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; padding: .9rem var(--gut); max-width: var(--maxw); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--cream-100); }
.brand svg { width: 38px; height: 38px; }
.brand__text { line-height: 1; }
.brand__zh { font-family: var(--font-display); font-size: 1.32rem; color: var(--cream-100); letter-spacing: .08em; }
.brand__en { font-family: var(--font-accent); font-size: .58rem; letter-spacing: .36em; color: var(--gold-400); text-transform: uppercase; }

.nav__links { display: flex; gap: 2rem; align-items: center; }
.nav__links a { font-size: .82rem; letter-spacing: .12em; color: var(--cream-200); position: relative; padding: .3rem 0; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 1px; background: var(--gold-400); transition: width .3s; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--gold-300); }
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { width: 100%; }

.nav__toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav__toggle span { width: 26px; height: 2px; background: var(--gold-400); transition: .3s; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 86vh; display: flex; align-items: center; color: var(--cream-100); overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; }
.hero__bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, rgba(7,33,29,.92) 0%, rgba(7,33,29,.72) 45%, rgba(7,33,29,.35) 100%); }
.hero__inner { position: relative; z-index: 2; max-width: 720px; }
.hero h1 { font-size: clamp(2.6rem, 7vw, 5rem); color: var(--cream-100); margin-bottom: 1rem; }
.hero h1 .gold { color: var(--gold-400); }
.hero__sub { font-family: var(--font-serif); font-size: clamp(1.2rem, 2.6vw, 1.65rem); color: var(--gold-300); margin-bottom: 2rem; max-width: 30ch; }
.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Art Deco 角落框線 */
.deco-frame { position: absolute; z-index: 2; width: 54px; height: 54px; border: 1px solid var(--gold-500); opacity: .65; }
.deco-frame--tl { top: 26px; left: 26px; border-right: none; border-bottom: none; }
.deco-frame--br { bottom: 26px; right: 26px; border-left: none; border-top: none; }

/* ---------- 通用區塊頭 ---------- */
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 4.5vw, 3rem); }

/* ---------- 網格 ---------- */
.grid { display: grid; gap: 1.6rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* ---------- 服務卡 ---------- */
.card {
  background: var(--paper);
  border: 1px solid rgba(201,162,75,.4);
  padding: 2.2rem 1.8rem;
  position: relative;
  transition: transform .35s, box-shadow .35s;
}
.section--dark .card, .section--ink .card { background: var(--emerald-700); border-color: rgba(201,162,75,.45); color: var(--cream-100); }
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px var(--shadow); }
.card__icon { width: 44px; height: 44px; margin-bottom: 1.2rem; color: var(--gold-500); }
.card h3 { font-size: 1.4rem; margin-bottom: .6rem; }
.card .num { font-family: var(--font-accent); color: var(--gold-500); font-size: .85rem; letter-spacing: .2em; }

/* ---------- 圖文交錯 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split__media { position: relative; }
.split__media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.split__media .frame-accent { position: absolute; inset: -14px -14px auto auto; width: 70%; height: 70%; border: 1px solid var(--gold-500); z-index: -1; }

/* ---------- 作品集 ---------- */
.project { position: relative; overflow: hidden; }
.project img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform .6s ease; }
.project:hover img { transform: scale(1.06); }
.project__cap { position: absolute; inset: auto 0 0 0; padding: 1.6rem; background: linear-gradient(transparent, rgba(6,21,19,.92)); color: var(--cream-100); }
.project__cap .tag { font-family: var(--font-accent); color: var(--gold-400); font-size: .68rem; letter-spacing: .26em; text-transform: uppercase; }
.project__cap h3 { font-size: 1.45rem; color: var(--cream-100); }

/* ---------- 數據條 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; text-align: center; }
.stat .n { font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 3.4rem); color: var(--gold-400); line-height: 1; }
.stat .l { font-size: .8rem; letter-spacing: .14em; color: var(--cream-200); margin-top: .5rem; }

/* ---------- 列表 ---------- */
.feature-list { list-style: none; }
.feature-list li { padding: .9rem 0 .9rem 1.8rem; border-bottom: 1px solid rgba(201,162,75,.28); position: relative; }
.feature-list li::before { content: ""; position: absolute; left: 0; top: 1.35rem; width: 8px; height: 8px; background: var(--gold-500); transform: rotate(45deg); }

/* ---------- 表單 ---------- */
.form { display: grid; gap: 1.2rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field label { font-size: .78rem; letter-spacing: .14em; color: var(--gold-300); text-transform: uppercase; font-family: var(--font-accent); }
.field input, .field textarea, .field select {
  background: rgba(245,239,225,.06); border: 1px solid rgba(201,162,75,.4); color: var(--cream-100);
  padding: .85rem 1rem; font-family: var(--font-body); font-size: .95rem;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--gold-400); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-note { font-size: .85rem; color: var(--gold-300); }
.form-msg { font-size: .9rem; color: var(--gold-300); min-height: 1.4em; }

/* ---------- 麵包屑 ---------- */
.crumb { font-size: .78rem; letter-spacing: .1em; color: var(--gold-500); padding: 1.2rem 0; }
.crumb a:hover { color: var(--gold-400); }

/* 頁首橫幅 */
.page-hero { background: var(--emerald-800); color: var(--cream-100); padding: clamp(3rem,7vw,5.5rem) 0 clamp(2.5rem,6vw,4rem); position: relative; overflow: hidden; }
.page-hero::before { content:""; position:absolute; right:-60px; top:-60px; width:220px; height:220px; background: repeating-conic-gradient(from 0deg at 50% 50%, rgba(201,162,75,.16) 0deg 5deg, transparent 5deg 10deg); border-radius:50%; }
.page-hero h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); color: var(--cream-100); position: relative; }
.page-hero p { max-width: 56ch; color: var(--gold-300); font-family: var(--font-serif); font-size: 1.25rem; position: relative; }

/* ---------- 頁尾 ---------- */
.footer { background: var(--ink-900); color: var(--cream-200); padding: 4rem 0 2rem; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }
.footer h4 { font-family: var(--font-accent); letter-spacing: .2em; font-size: .82rem; color: var(--gold-400); text-transform: uppercase; margin-bottom: 1.1rem; }
.footer a { display: block; padding: .3rem 0; color: var(--cream-200); font-size: .9rem; }
.footer a:hover { color: var(--gold-300); }
.footer__brand .brand__zh { color: var(--cream-100); }
.footer__bottom { border-top: 1px solid rgba(201,162,75,.25); padding-top: 1.4rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: .6rem; font-size: .78rem; color: rgba(236,227,205,.6); }
.footer__credit { color: var(--gold-500); }

/* ---------- 動畫 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- RWD ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr; }
  .nav__links {
    position: fixed; inset: 64px 0 auto 0; flex-direction: column; gap: 0;
    background: var(--emerald-900); padding: 1rem var(--gut); border-bottom: 1px solid rgba(201,162,75,.3);
    transform: translateY(-130%); transition: transform .4s ease;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a { padding: .85rem 0; width: 100%; border-bottom: 1px solid rgba(201,162,75,.15); }
  .nav__toggle { display: flex; }
  .field-row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}