/* ikinihon 粋・日本 -- main.css
 * 品牌調性:洗練、留白、明朝骨、朱印落款
 * 版本 v0.2  2026-07-01  桌機 sidebar / 手機漢堡
 */

/* ---------- tokens ---------- */
:root {
  --ink:        #2a2622;
  --ink-soft:   #6f6a63;
  --ink-mute:   #9a948a;
  --paper:      #f6efdb;
  --paper-alt:  #ede4c9;
  --rule:       #dcd6c8;
  --seal:       #9b2c2c;
  --seal-soft:  #b85555;

  --font-sans:  'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Segoe UI', sans-serif;
  --font-mincho:'Shippori Mincho', 'Noto Serif JP', 'Songti TC', 'PingFang TC', serif;

  --wrap:       780px;
  --gutter:     24px;
  --sidebar:    240px;
  --break-lg:   900px;
}

/* ---------- reset / base ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.4;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.2s ease, color 0.2s ease;
}
a:hover { color: var(--seal); border-bottom-color: var(--seal); }

h1, h2, h3, h4 {
  font-family: var(--font-mincho);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

/* ---------- utility ---------- */
.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.muted { color: var(--ink-soft); }
.center { text-align: center; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 8px 16px;
  background: var(--ink);
  color: var(--paper);
}

/* ---------- header / brand  (mobile default) ---------- */
.site-header {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px var(--gutter) 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  line-height: 1;
}
.brand a { border-bottom: none; }

.brand-mark {
  font-family: var(--font-mincho);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.08em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.4em;
  height: 1.4em;
  background: var(--seal);
  color: var(--paper);
  font-size: 0.7em;
  font-family: var(--font-mincho);
  font-weight: 500;
  letter-spacing: 0;
  border-radius: 2px;
  transform: translateY(-1px);
}

.brand-domain {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.25em;
  text-transform: lowercase;
}

/* ---------- hamburger (mobile default 顯示) ---------- */
.nav-toggle {
  position: absolute;
  top: 32px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  z-index: 20;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* nav 手機預設收起 */
.site-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.site-nav.is-open {
  max-height: 300px;
  padding-top: 8px;
}
.site-nav a {
  display: block;
  padding: 10px 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
  border-bottom: none;
  letter-spacing: 0.1em;
  text-align: center;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); }

/* ---------- section rhythm ---------- */
main { padding: 24px 0 80px; }
section {
  padding: 280px 0 160px;
}
section:last-of-type { border-bottom: none; }

.section-label {
  font-family: var(--font-mincho);
  font-size: 1.43rem;
  font-weight: 400;
  color: var(--ink-mute);
  letter-spacing: 0.24em;
  margin: 0 0 16px;
}
.section-label::before {
  content: "◆";
  color: var(--seal);
  margin-right: 12px;
  font-size: 0.75em;
  vertical-align: middle;
  letter-spacing: 0;
}

/* 首頁「期間限定」單獨:離 hero 遠、貼近 entry */
#pilot { padding-top: 100px; }
#pilot .section-label { margin-bottom: 16px; }

/* section 內 ul / ol */
section ul, section ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
  color: var(--ink);
  font-size: 0.95rem;
  max-width: 36em;
}
section li { margin-bottom: 0.5em; }
section li::marker { color: var(--ink-mute); }

/* ---------- hero ---------- */
.hero {
  padding: 40px 0 24px;
  border-bottom: none;
  text-align: center;
}
.hero-banner {
  display: block;
  border-bottom: none;
  overflow: hidden;
  border-radius: 2px;
}
.hero-banner:hover { border-bottom: none; }
.hero-banner img {
  width: 100%;
  height: auto;
  display: block;
}
.hero-mark {
  font-family: var(--font-mincho);
  font-size: 2.4rem;
  color: var(--ink);
  letter-spacing: 0.15em;
  margin: 0 0 32px;
  line-height: 1.3;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 0 auto;
  max-width: 34em;
}

/* ---------- entry ---------- */
.entry { padding: 4px 0 8px; }
.entry-meta {
  font-size: 0.8rem;
  color: var(--ink-mute);
  letter-spacing: 0.16em;
  margin: 0 0 8px;
}
.entry-title {
  font-family: var(--font-mincho);
  font-size: 1.35rem;
  font-weight: 500;
  margin: 0 0 12px;
  letter-spacing: 0.06em;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.entry-title a { border-bottom: none; color: var(--ink); }
.entry-title a:hover { color: var(--seal); }
.entry-summary {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.45;
  max-width: 36em;
}

.entry-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0.2em;
  padding: 2px 10px;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  border-radius: 2px;
  vertical-align: middle;
}
.entry-tag.pilot {
  border-color: var(--seal);
  color: var(--seal);
}

/* ---------- empty state ---------- */
.empty {
  padding: 32px 24px;
  color: var(--ink-mute);
  background: var(--paper-alt);
  border-radius: 2px;
  font-size: 0.95rem;
  text-align: center;
}

/* ---------- lead paragraph ---------- */
.lead {
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.5;
  margin: 0 0 20px;
  max-width: 36em;
}

/* ---------- product page ---------- */
.product-header { padding: 32px 0 16px; }
.product-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--ink-mute);
  letter-spacing: 0.24em;
  margin: 0 0 20px;
}
.product-eyebrow .entry-tag {
  margin-left: 8px;
}
.product-title {
  font-family: var(--font-mincho);
  font-size: 2.1rem;
  font-weight: 500;
  margin: 0 0 24px;
  letter-spacing: 0.08em;
  line-height: 1.4;
}
.product-summary {
  font-size: 1.05rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 0;
  max-width: 36em;
}

.product-facts {
  margin: 0 0 1em;
  display: grid;
  grid-template-columns: 8em 1fr;
  gap: 16px 24px;
  font-size: 0.95rem;
}
.voyage-days {
  margin: 0 0 1em;
  display: grid;
  grid-template-columns: 12em 1fr;
  gap: 12px 24px;
  font-size: 0.95rem;
}
.voyage-days dt {
  color: var(--ink-mute);
  font-family: var(--font-mincho);
  letter-spacing: 0.08em;
  font-size: 0.9rem;
}
.voyage-days dd {
  margin: 0;
  color: var(--ink);
}

.product-facts dt {
  color: var(--ink-mute);
  font-family: var(--font-mincho);
  letter-spacing: 0.1em;
  font-size: 0.9rem;
}
.product-facts dd { margin: 0; color: var(--ink); }

.tbd {
  color: var(--ink-mute);
  font-style: normal;
  padding: 1px 8px;
  background: var(--paper-alt);
  border-radius: 2px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

/* ---------- note ---------- */
.note {
  margin: 32px 0 0;
  padding: 20px 24px;
  background: var(--paper-alt);
  border-left: 2px solid var(--seal);
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.45;
}
.note strong {
  color: var(--ink);
  font-weight: 500;
  font-family: var(--font-mincho);
  letter-spacing: 0.06em;
  display: inline-block;
  margin-right: 4px;
}

section h3 {
  font-size: 1.1rem;
  margin: 32px 0 12px;
  color: var(--ink);
  letter-spacing: 0.08em;
}
section h3:first-of-type { margin-top: 8px; }

/* ---------- cta ---------- */
.cta-row { margin: 32px 0 0; text-align: center; }
.cta {
  display: inline-block;
  padding: 14px 40px;
  background: var(--ink);
  color: var(--paper);
  border-bottom: none;
  font-family: var(--font-mincho);
  font-size: 1rem;
  letter-spacing: 0.2em;
  border-radius: 2px;
  transition: background 0.2s ease;
}
.cta:hover {
  background: var(--seal);
  color: var(--paper);
  border-bottom-color: transparent;
}

.rule {
  border: none;
  height: 1px;
  background: var(--rule);
  margin: 40px 0;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--paper-alt);
  padding: 48px 0 32px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.5;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 48px;
}
.footer-block strong {
  display: block;
  font-family: var(--font-mincho);
  color: var(--ink);
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  font-size: 0.95rem;
}
.footer-block .muted { display: inline; color: var(--ink-mute); margin-right: 8px; }
.footer-block a { color: var(--ink-soft); border-bottom-color: transparent; }
.footer-block a:hover { color: var(--seal); border-bottom-color: var(--seal); }
.footer-related {
  margin-top: 20px;
  font-size: 0.85rem;
  line-height: 1.5;
}

.footer-copy {
  margin-top: 20px;
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.16em;
}

/* ==========================================================
   桌機 sidebar layout  (>= 900px)
   ========================================================== */
@media (min-width: 900px) {
  body {
    display: grid;
    grid-template-columns: var(--sidebar) minmax(0, 1fr);
    grid-template-rows: auto 1fr auto;
    min-height: 100vh;
  }

  .site-header {
    grid-column: 1;
    grid-row: 1 / span 3;
    max-width: none;
    margin: 0;
    padding: 56px 28px 32px;
    border-bottom: none;
    align-items: center;
    text-align: center;
    background: var(--paper);
    position: sticky;
    top: 0;
    align-self: start;
    gap: 40px;
  }

  .nav-toggle { display: none; }

  .site-nav {
    max-height: none;
    overflow: visible;
    padding-top: 0;
    gap: 8px;
  }
  .site-nav a {
    padding: 8px 0;
    font-size: 0.95rem;
  }
  .site-nav a[aria-current="page"] {
    color: var(--ink);
    position: relative;
  }
  .site-nav a[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 2px;
    width: 24px;
    height: 1px;
    background: var(--ink);
    transform: translateX(-50%);
  }

  main {
    grid-column: 2;
    grid-row: 1 / span 2;
    padding: 24px 0 80px;
  }

  .site-footer {
    grid-column: 2;
    grid-row: 3;
  }
}