/* ---------------------------------------------------------
   野路工作室 — 基礎樣式
   設計語彙：紙、墨、苔色、節制的編輯式留白
--------------------------------------------------------- */

:root {
  /* 紙與墨 */
  --paper: #F2ECE0;
  --paper-deep: #EAE1CE;
  --paper-edge: #DDD3BC;

  --ink: #2A2520;
  --ink-soft: #4A4138;
  --ink-mute: #7A6E5E;
  --ink-faint: #A89B85;

  /* 點綴色 */
  --moss: #3D4F3A;
  --moss-soft: #5A6B53;
  --rust: #8B5E3C;

  /* 線條 */
  --hairline: #C9BFAD;
  --hairline-soft: #D9D0BD;

  /* 字型 */
  --font-zh: "Noto Serif TC", "Noto Serif SC", "Source Han Serif TC", "Source Han Serif SC", "Songti TC", "Songti SC", "STSong", "STSongti-TC-Regular", "SimSun", "宋体", serif;
  --font-en: "EB Garamond", "Cormorant Garamond", Georgia, serif;
  --font-display: "Cormorant Garamond", "EB Garamond", Georgia, serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  /* 尺度 */
  --measure: 38rem;      /* 內文最佳閱讀寬度 */
  --measure-wide: 52rem; /* 較寬內容 */
  --measure-full: 72rem;
}

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

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

body {
  font-family: var(--font-zh);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--ink);
  background: var(--paper);
  background-image:
    radial-gradient(ellipse at top left, rgba(255,250,240,0.4), transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(220,210,190,0.25), transparent 50%);
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

/* 紙紋顆粒疊層 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.2 0 0 0 0 0.18 0 0 0 0 0.15 0 0 0 0.4 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

main, header, footer, nav {
  position: relative;
  z-index: 2;
}

/* ---------- 連結 ---------- */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--moss);
}

/* ---------- 排版基礎 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

p {
  margin: 0;
}

em, i {
  font-style: italic;
}

strong, b {
  font-weight: 600;
}

::selection {
  background: var(--moss);
  color: var(--paper);
}

/* ---------- 共用元件 ---------- */

/* 上方導覽 */
.site-header {
  padding: 1.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--hairline-soft);
  background: rgba(242, 236, 224, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-brand {
  font-family: var(--font-zh);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--ink);
}

.site-brand .brand-en {
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--ink-mute);
  margin-left: 0.625rem;
  letter-spacing: 0.05em;
}

.site-nav {
  display: flex;
  gap: 2.25rem;
}

.site-nav a {
  font-size: 0.9375rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  position: relative;
  padding-bottom: 0.25rem;
}

.site-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--moss);
  transition: width 0.3s ease;
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

.site-nav a.active {
  color: var(--moss);
}

/* 繁簡切換（共用元件，閱讀頁與作品頁皆會用到） */
.script-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 250, 240, 0.4);
}

.script-toggle button {
  background: none;
  border: none;
  padding: 0.4rem 0.85rem;
  font-family: var(--font-zh);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  cursor: pointer;
  transition: all 0.25s ease;
}

.script-toggle button.active {
  background: var(--ink);
  color: var(--paper);
}

.script-toggle button:not(.active):hover {
  color: var(--ink);
  background: rgba(201, 191, 173, 0.3);
}

/* 頁尾 */
.site-footer {
  margin-top: 8rem;
  padding: 3rem 2rem 2.5rem;
  border-top: 1px solid var(--hairline-soft);
  background: var(--paper-deep);
}

.footer-inner {
  max-width: var(--measure-full);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-brand {
  font-size: 0.9375rem;
  letter-spacing: 0.15em;
  color: var(--ink-soft);
}

.footer-brand .brand-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.8125rem;
  color: var(--ink-mute);
  margin-left: 0.5rem;
}

.footer-meta {
  font-family: var(--font-en);
  font-size: 0.8125rem;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  font-style: italic;
}

/* 容器寬度 */
.container {
  width: 100%;
  max-width: var(--measure-full);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-medium {
  width: 100%;
  max-width: var(--measure-wide);
  margin: 0 auto;
  padding: 0 2rem;
}

/* 區塊編號（Quinn 風格的大數字） */
.section-number {
  font-family: var(--font-en);
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  color: var(--moss);
  font-style: italic;
  display: block;
  margin-bottom: 0.5rem;
}

/* 大型編號 */
.numeral-display {
  font-family: var(--font-en);
  font-size: 4rem;
  font-weight: 300;
  font-style: italic;
  color: var(--moss);
  line-height: 1;
  display: inline-block;
}

/* 章節標題裝飾 */
.section-mark {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-mark::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--hairline);
}

.section-mark-text {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* 引言區塊 */
.pullquote {
  font-family: var(--font-zh);
  font-size: 1.375rem;
  line-height: 1.75;
  color: var(--ink-soft);
  font-style: italic;
  margin: 3rem 0;
  padding: 2rem 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  text-align: center;
  letter-spacing: 0.03em;
}

/* CTA 按鈕 */
.btn-line {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 0;
  font-family: var(--font-zh);
  font-size: 0.9375rem;
  letter-spacing: 0.15em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  transition: all 0.3s ease;
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  cursor: pointer;
}

.btn-line::after {
  content: "→";
  font-family: var(--font-en);
  transition: transform 0.3s ease;
}

.btn-line:hover {
  color: var(--moss);
  border-bottom-color: var(--moss);
}

.btn-line:hover::after {
  transform: translateX(6px);
}

/* 響應式 */
@media (max-width: 768px) {
  body {
    font-size: 1rem;
    line-height: 1.8;
  }

  .site-header {
    padding: 1.25rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .site-nav {
    gap: 1.5rem;
    width: 100%;
    justify-content: flex-start;
  }

  .site-nav a {
    font-size: 0.875rem;
  }

  .container,
  .container-narrow,
  .container-medium {
    padding: 0 1.25rem;
  }

  .pullquote {
    font-size: 1.125rem;
    margin: 2rem 0;
    padding: 1.5rem 0;
  }

  .numeral-display {
    font-size: 3rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}