/* ===========================================================
   手作老師 — 全站共用樣式
   設計變數集中於 :root，全站沿用同一套 class 與版面
   =========================================================== */

:root {
  /* 配色 — 溫暖手作風 */
  --color-primary: #b5764a;        /* 暖棕 — 主色 */
  --color-primary-dark: #8d5733;
  --color-accent: #e0a458;         /* 暖橙 — 點綴 */
  --color-secondary: #6f8f6a;      /* 竹綠 */
  --color-bg: #fbf7f1;             /* 米白背景 */
  --color-surface: #ffffff;
  --color-text: #3a322c;
  --color-muted: #7a6f64;
  --color-border: #ece2d6;

  /* 字級階層 */
  --fs-hero: clamp(2rem, 5vw, 3.4rem);
  --fs-h2: clamp(1.5rem, 3.5vw, 2.4rem);
  --fs-h3: clamp(1.15rem, 2vw, 1.4rem);
  --fs-body: clamp(1rem, 1.6vw, 1.08rem);

  /* 版面 */
  --container: 1140px;
  --gap: clamp(1.5rem, 4vw, 3rem);
  --radius: 14px;
  --shadow: 0 10px 30px rgba(110, 80, 50, 0.12);
  --pad-inline: clamp(1.1rem, 5vw, 2.5rem);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  font-size: var(--fs-body);
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary-dark); text-decoration: none; }

/* ---------- 置中容器 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-inline);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 241, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.9rem;
}
.brand {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand span { font-size: 1.5rem; }
.nav-links {
  display: flex;
  gap: clamp(0.8rem, 2vw, 1.8rem);
  list-style: none;
  align-items: center;
}
.nav-links a {
  color: var(--color-text);
  font-weight: 600;
  padding: 0.3rem 0.2rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-primary); border-color: var(--color-primary); }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--color-primary-dark);
}

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-block;
  padding: 0.65em 1.5em;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: #fff; border-color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.15); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--color-primary-dark); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  background: linear-gradient(rgba(60,40,25,0.55), rgba(60,40,25,0.55)),
              var(--hero-img, linear-gradient(135deg, var(--color-primary), var(--color-accent)));
  background-size: cover;
  background-position: center;
}
.hero-inner {
  padding-block: clamp(3.5rem, 12vw, 7rem);
  max-width: 720px;
}
.hero h1 {
  font-size: var(--fs-hero);
  line-height: 1.15;
  margin-bottom: 1rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.hero p { font-size: 1.15rem; margin-bottom: 1.8rem; max-width: 38ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; }

/* page sub-hero (內頁標頭) */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  text-align: center;
}
.page-hero .container { padding-block: clamp(2.5rem, 8vw, 4.5rem); }
.page-hero h1 { font-size: var(--fs-hero); margin-bottom: 0.6rem; }
.page-hero p { max-width: 50ch; margin-inline: auto; opacity: 0.95; }

/* ---------- Sections ---------- */
.section { padding-block: clamp(3rem, 8vw, 5.5rem); }
.section-alt { background: var(--color-surface); }
.section-head { text-align: center; max-width: 60ch; margin-inline: auto; margin-bottom: var(--gap); }
.section-head h2 { font-size: var(--fs-h2); color: var(--color-primary-dark); margin-bottom: 0.6rem; }
.section-head p { color: var(--color-muted); }
.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

/* ---------- Grid / Cards ---------- */
.grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s;
}
.card:hover { transform: translateY(-6px); }
.card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.card-body { padding: 1.4rem; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; }
.card-body h3 { font-size: var(--fs-h3); color: var(--color-primary-dark); }
.card-body p { color: var(--color-muted); flex: 1; }
.card-body .btn { align-self: flex-start; margin-top: 0.4rem; }

/* tag / 標籤 */
.tag {
  display: inline-block;
  background: var(--color-bg);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.2em 0.8em;
  font-size: 0.82rem;
  font-weight: 600;
}

/* ---------- Split (圖文並排) ---------- */
.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: var(--gap);
  align-items: center;
}
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }
.split h2 { font-size: var(--fs-h2); color: var(--color-primary-dark); margin-bottom: 0.8rem; }
.split ul { list-style: none; display: grid; gap: 0.6rem; margin-top: 1rem; }
.split ul li { padding-left: 1.6rem; position: relative; }
.split ul li::before { content: "✦"; position: absolute; left: 0; color: var(--color-accent); }

/* ---------- Steps ---------- */
.steps { counter-reset: step; display: grid; gap: 1.2rem; }
.step {
  display: flex; gap: 1rem; align-items: flex-start;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 1.2rem 1.4rem;
}
.step::before {
  counter-increment: step; content: counter(step);
  flex: 0 0 auto; width: 2.4rem; height: 2.4rem; border-radius: 50%;
  background: var(--color-primary); color: #fff; font-weight: 800;
  display: grid; place-items: center;
}
.step h3 { font-size: var(--fs-h3); color: var(--color-primary-dark); margin-bottom: 0.2rem; }
.step p { color: var(--color-muted); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff; text-align: center; border-radius: var(--radius);
  padding: clamp(2rem, 6vw, 3.5rem);
}
.cta-band h2 { font-size: var(--fs-h2); margin-bottom: 0.8rem; }
.cta-band p { margin-bottom: 1.5rem; opacity: 0.95; }

/* ---------- Contact form ---------- */
.form { display: grid; gap: 1rem; max-width: 560px; }
.form label { font-weight: 600; display: grid; gap: 0.35rem; }
.form input, .form textarea, .form select {
  font: inherit; padding: 0.7rem 0.9rem; border: 1px solid var(--color-border);
  border-radius: 10px; background: var(--color-surface); color: var(--color-text);
}
.form textarea { min-height: 130px; resize: vertical; }
.form .btn { justify-self: start; }

.info-list { list-style: none; display: grid; gap: 1rem; }
.info-list li { display: flex; gap: 0.8rem; align-items: flex-start; }
.info-list .ico { font-size: 1.4rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: #2f2820; color: #d9cfc3; margin-top: 0;
  padding-block: clamp(2.5rem, 6vw, 3.5rem) 1.5rem;
}
.footer-grid {
  display: grid; gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
}
.site-footer h4 { color: #fff; margin-bottom: 0.8rem; font-size: 1.05rem; }
.site-footer a { color: #d9cfc3; }
.site-footer a:hover { color: var(--color-accent); }
.site-footer ul { list-style: none; display: grid; gap: 0.4rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); margin-top: 2rem; padding-top: 1.2rem;
  text-align: center; color: #a89c8d; font-size: 0.88rem;
}

/* ---------- RWD ---------- */
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 100%; right: 0; left: 0;
    flex-direction: column; align-items: flex-start;
    background: var(--color-bg); border-bottom: 1px solid var(--color-border);
    padding: 1rem var(--pad-inline); gap: 0.4rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; }
}