/* ============================================================
   白熊灯灯手账本 · 样式
   ------------------------------------------------------------
   奶油底，衬线字，灯光暖橙。
   纸质纹理来自 SVG noise，不依赖外部图片。
   ============================================================ */

:root {
  --paper:        #FAF6EC;   /* 主底色 · 奶油纸 */
  --paper-dim:    #F2EBDB;   /* 卡片底色 */
  --paper-edge:   #E5DBC4;   /* 分隔线/边缘 */
  --ink:          #2A2018;   /* 主文字 · 墨棕 */
  --ink-dim:      #6B5E50;   /* 次文字 */
  --ink-quiet:    #9A8B7A;   /* 弱文字 */
  --glow:         #C77437;   /* 灯光暖橙 · 强调色 */
  --glow-soft:    #E8A879;   /* 灯光浅色 · hover */
  --bear:         #5C6E6E;   /* 白熊 · 雪青灰 */
  --shadow:       0 1px 0 rgba(60,40,20,0.04),
                  0 8px 24px -12px rgba(60,40,20,0.18);

  --serif-cn:     "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --serif-en:     "Cormorant Garamond", "Iowan Old Style", "Palatino", serif;
  --brush:        "Ma Shan Zheng", var(--serif-cn);

  --max-w:        720px;
  --pad-x:        clamp(1.25rem, 4vw, 2.5rem);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif-en), var(--serif-cn);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

/* 纸质纹理 · SVG noise 叠在 body 之上 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
  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='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.6 0 0 0 0 0.5 0 0 0 0 0.4 0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.paper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x) 4rem;
  display: flex;
  flex-direction: column;
}

/* ─── Masthead ───────────────────────────────────────────── */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 2.25rem 0 1.5rem;
  border-bottom: 1px solid var(--paper-edge);
  margin-bottom: 2.5rem;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}

.logo-glyph {
  font-family: var(--brush);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--glow);
  text-shadow: 0 0 16px rgba(199,116,55,0.25);
  letter-spacing: 0;
}

.logo-text {
  font-family: var(--serif-cn);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-family: var(--serif-cn);
  font-size: 0.92rem;
  color: var(--ink-dim);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
  position: relative;
}

.nav-link:hover { color: var(--glow); }

.nav-link--accent {
  color: var(--glow);
  font-weight: 500;
}

.nav-link--quiet {
  color: var(--ink-quiet);
  font-size: 0.85rem;
  font-style: italic;
}

/* ─── Hero ───────────────────────────────────────────────── */
.hero { margin-bottom: 3rem; text-align: center; }

.hero-title {
  font-family: var(--serif-cn);
  font-weight: 300;
  font-size: clamp(1.6rem, 4.5vw, 2.2rem);
  letter-spacing: 0.12em;
  margin: 0 0 0.6rem;
  color: var(--ink);
}

.hero-sub {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 1rem;
  color: var(--ink-quiet);
  margin: 0;
  letter-spacing: 0.02em;
}

/* ─── Entry list ─────────────────────────────────────────── */
.entries {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.entry-item {
  border-bottom: 1px solid var(--paper-edge);
}
.entry-item:first-child { border-top: 1px solid var(--paper-edge); }

.entry-link {
  display: block;
  padding: 1.75rem 0.25rem;
  text-decoration: none;
  color: inherit;
  transition: background 0.25s ease, padding 0.25s ease;
}

.entry-link:hover {
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(199,116,55,0.05) 50%,
    transparent 100%);
  padding-left: 1rem;
}

.entry-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.82rem;
  margin-bottom: 0.4rem;
  font-family: var(--serif-en);
  letter-spacing: 0.04em;
}

.entry-date {
  color: var(--ink-quiet);
  font-feature-settings: "tnum" 1;
}

.entry-author {
  font-family: var(--serif-cn);
  font-size: 0.78rem;
  padding: 0.12rem 0.6rem;
  border-radius: 2px;
  letter-spacing: 0.1em;
}

.entry-author--ruoruo {
  color: var(--bear);
  background: rgba(92,110,110,0.08);
  border: 1px solid rgba(92,110,110,0.18);
}

.entry-author--deng {
  color: var(--glow);
  background: rgba(199,116,55,0.08);
  border: 1px solid rgba(199,116,55,0.22);
}

.entry-title {
  font-family: var(--serif-cn);
  font-weight: 500;
  font-size: 1.35rem;
  line-height: 1.4;
  margin: 0.3rem 0 0.5rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.entry-preview {
  font-size: 0.95rem;
  color: var(--ink-dim);
  margin: 0;
  line-height: 1.7;
  font-style: italic;
  font-family: var(--serif-en), var(--serif-cn);
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.tag {
  font-family: var(--serif-en);
  font-size: 0.78rem;
  color: var(--ink-quiet);
  padding: 0.1rem 0.55rem;
  border: 1px solid var(--paper-edge);
  border-radius: 999px;
  letter-spacing: 0.04em;
}

/* ─── Empty state ────────────────────────────────────────── */
.empty {
  text-align: center;
  padding: 5rem 1rem;
}

.empty-line {
  font-family: var(--serif-cn);
  font-weight: 300;
  font-size: 1.2rem;
  margin: 0.4rem 0;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
}

.empty-line--quiet {
  color: var(--ink-quiet);
  font-style: italic;
  font-size: 1rem;
}

.empty-cta {
  display: inline-block;
  margin-top: 2rem;
  font-family: var(--serif-cn);
  font-size: 1rem;
  color: var(--glow);
  text-decoration: none;
  letter-spacing: 0.08em;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--glow);
  border-radius: 2px;
  transition: all 0.25s ease;
}

.empty-cta:hover {
  background: var(--glow);
  color: var(--paper);
}

/* ─── Article (single entry) ─────────────────────────────── */
.article { padding: 1rem 0; }

.article-head {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--paper-edge);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--serif-en);
  font-size: 0.88rem;
  color: var(--ink-quiet);
  letter-spacing: 0.05em;
  margin-bottom: 0.8rem;
}

.article-divider { opacity: 0.5; }

.article-author {
  font-family: var(--serif-cn);
  letter-spacing: 0.1em;
}
.article-author--ruoruo { color: var(--bear); }
.article-author--deng   { color: var(--glow); }

.article-title {
  font-family: var(--serif-cn);
  font-weight: 500;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  line-height: 1.35;
  margin: 0 0 0.8rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--ink);
}

.article-body p { margin: 0 0 1.2rem; text-indent: 0; }

.article-body p + p { margin-top: 0; }

/* 首字下沉 · 文章第一段第一字 */
.article-body > p:first-of-type::first-letter {
  font-family: var(--serif-cn);
  font-size: 3.2em;
  float: left;
  line-height: 0.9;
  margin: 0.1em 0.12em 0 0;
  color: var(--glow);
  font-weight: 500;
}

.article-body h1,
.article-body h2,
.article-body h3 {
  font-family: var(--serif-cn);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin: 2.2rem 0 0.8rem;
  color: var(--ink);
}
.article-body h1 { font-size: 1.5rem; }
.article-body h2 { font-size: 1.3rem; }
.article-body h3 { font-size: 1.15rem; color: var(--ink-dim); }

.article-body em { color: var(--ink-dim); font-style: italic; }
.article-body strong { color: var(--ink); font-weight: 600; }

.article-body a {
  color: var(--glow);
  text-decoration: none;
  border-bottom: 1px solid rgba(199,116,55,0.4);
  transition: border-color 0.2s ease;
}
.article-body a:hover { border-bottom-color: var(--glow); }

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 0.5rem 1.2rem;
  border-left: 3px solid var(--glow);
  color: var(--ink-dim);
  font-style: italic;
  font-family: var(--serif-en), var(--serif-cn);
  background: rgba(199,116,55,0.04);
}

.article-body code {
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
  font-size: 0.92em;
  background: var(--paper-dim);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  color: var(--ink);
}

.article-body pre {
  background: var(--paper-dim);
  border: 1px solid var(--paper-edge);
  padding: 1rem 1.2rem;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.92rem;
  line-height: 1.6;
}
.article-body pre code { background: none; padding: 0; }

.article-body hr {
  border: none;
  text-align: center;
  margin: 2.5rem 0;
  height: 1.5rem;
  position: relative;
}
.article-body hr::before {
  content: "·  ·  ·";
  color: var(--ink-quiet);
  letter-spacing: 0.8em;
  font-size: 1.2rem;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 2px;
  margin: 1.2rem 0;
  box-shadow: var(--shadow);
}

.article-body ul, .article-body ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}
.article-body li { margin: 0.3rem 0; }

.article-foot {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--paper-edge);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.action {
  font-family: var(--serif-cn);
  font-size: 0.95rem;
  color: var(--glow);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: opacity 0.2s ease;
}
.action:hover { opacity: 0.7; }
.action--quiet { color: var(--ink-quiet); }

/* ─── Composer (new / edit) ──────────────────────────────── */
.composer {
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.composer-head {
  font-family: var(--serif-cn);
  font-weight: 300;
  font-size: 1.6rem;
  letter-spacing: 0.1em;
  margin: 0 0 0.5rem;
  color: var(--ink);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.field--inline { flex: 1; min-width: 180px; }

.field-label {
  font-family: var(--serif-cn);
  font-size: 0.82rem;
  color: var(--ink-quiet);
  letter-spacing: 0.1em;
}

.field-input {
  font-family: inherit;
  font-size: 1.02rem;
  color: var(--ink);
  background: var(--paper-dim);
  border: 1px solid var(--paper-edge);
  border-radius: 3px;
  padding: 0.7rem 0.9rem;
  width: 100%;
  transition: border-color 0.2s ease, background 0.2s ease;
  line-height: 1.6;
}

.field-input:focus {
  outline: none;
  border-color: var(--glow);
  background: var(--paper);
  box-shadow: 0 0 0 3px rgba(199,116,55,0.1);
}

.field-input--textarea {
  font-family: var(--serif-cn);
  resize: vertical;
  min-height: 280px;
  line-height: 1.85;
}

.composer-actions {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  align-items: center;
}

.btn {
  font-family: var(--serif-cn);
  font-size: 1rem;
  letter-spacing: 0.08em;
  padding: 0.65rem 1.8rem;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s ease;
}

.btn--primary {
  background: var(--glow);
  color: var(--paper);
  border-color: var(--glow);
}
.btn--primary:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.btn--quiet {
  background: transparent;
  color: var(--ink-quiet);
  border-color: var(--paper-edge);
}
.btn--quiet:hover { color: var(--ink); border-color: var(--ink-dim); }

.btn--full { width: 100%; padding-block: 0.85rem; }

/* ─── Footer ─────────────────────────────────────────────── */
.footer {
  margin-top: auto;
  padding: 3rem 0 1rem;
  text-align: center;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--ink-quiet);
  letter-spacing: 0.06em;
}

/* ─── Login page ─────────────────────────────────────────── */
.body--login {
  background: var(--paper);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.login-page {
  width: 100%;
  max-width: 380px;
  position: relative;
  z-index: 1;
}

.login-card {
  background: var(--paper-dim);
  border: 1px solid var(--paper-edge);
  border-radius: 4px;
  padding: 3rem 2.2rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.login-glyph {
  font-family: var(--brush);
  font-size: 3.8rem;
  line-height: 1;
  color: var(--glow);
  text-shadow: 0 0 24px rgba(199,116,55,0.35);
  margin-bottom: 0.5rem;
}

.login-title {
  font-family: var(--serif-cn);
  font-weight: 400;
  font-size: 1.3rem;
  letter-spacing: 0.12em;
  margin: 0 0 0.4rem;
}

.login-sub {
  font-family: var(--serif-en);
  font-style: italic;
  color: var(--ink-quiet);
  font-size: 0.92rem;
  margin: 0 0 2rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.login-error {
  color: #B14A2B;
  background: rgba(199,116,55,0.08);
  border: 1px solid rgba(199,116,55,0.25);
  padding: 0.5rem 0.8rem;
  border-radius: 3px;
  font-size: 0.9rem;
  font-family: var(--serif-cn);
  margin: 0 0 1rem;
}

/* ─── Mobile ─────────────────────────────────────────────── */
@media (max-width: 540px) {
  .masthead { padding: 1.5rem 0 1rem; }
  .nav { width: 100%; gap: 1.1rem; flex-wrap: wrap; }
  .logo-text { font-size: 0.95rem; }
  .article-body { font-size: 1rem; }
  .article-body > p:first-of-type::first-letter { font-size: 2.6em; }
  .entry-link:hover { padding-left: 0.25rem; }
}