/* =========================================================
   免费商用字体馆 · 重制样式
   设计方向：深色质感顶栏 + 暖白纸感背景 + 大留白 + 徽章化信息
   ========================================================= */

:root {
  --paper: #f5f4f0;          /* 暖白纸感背景 */
  --paper-2: #efece6;
  --surface: #ffffff;
  --ink: #1a1a1f;            /* 近黑主文字 */
  --ink-soft: #5c5c66;       /* 次级文字 */
  --ink-faint: #9a9aa3;
  --line: #e6e3dc;           /* 描边 */
  --line-soft: #f0eee9;

  --accent: #4f46e5;         /* 主强调色（靛蓝） */
  --accent-2: #7c3aed;       /* 次强调（紫） */
  --accent-soft: #eeefff;

  --good: #15803d;  --good-bg: #dcfce7;   /* OFL 开源 */
  --warn: #b45309;  --warn-bg: #fef3c7;   /* 免费声明 */
  --info: #1d4ed8;  --info-bg: #dbeafe;   /* Apache / UFL */

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(20,20,30,.04), 0 10px 30px rgba(20,20,30,.06);
  --shadow-hover: 0 4px 8px rgba(20,20,30,.08), 0 22px 50px rgba(20,20,30,.12);
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background:
    radial-gradient(1200px 600px at 100% -10%, #eef0ff 0%, transparent 55%),
    radial-gradient(1000px 500px at -10% 0%, #fbeef6 0%, transparent 50%),
    var(--paper);
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ===== 顶栏 ===== */
.site-header {
  background: linear-gradient(135deg, #181826 0%, #23233a 60%, #2a2150 100%);
  color: #fff;
  position: sticky; top: 0; z-index: 30;
  box-shadow: 0 2px 20px rgba(20,20,30,.18);
}
.header-inner {
  max-width: 1320px; margin: 0 auto; padding: 18px 28px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  display: grid; place-items: center;
  font-weight: 800; font-size: 20px; color: #fff;
  box-shadow: 0 6px 18px rgba(79,70,229,.45);
}
.logo { font-size: 21px; font-weight: 800; letter-spacing: .5px; line-height: 1.1; }
.logo small { display: block; font-size: 11px; font-weight: 500; color: #b9b8d6; letter-spacing: 2px; margin-top: 2px; }
.header-meta { margin-left: auto; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.count-badge {
  background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.16);
  padding: 7px 14px; border-radius: 99px; font-size: 13px; color: #e8e8f5;
  backdrop-filter: blur(6px);
}
.count-badge b { color: #fff; font-weight: 700; }
.disclaimer {
  font-size: 11.5px; color: #e7d9b8; background: rgba(180,140,40,.18);
  border: 1px solid rgba(200,160,60,.30); border-radius: 8px;
  padding: 6px 12px; max-width: 520px; line-height: 1.5;
}

/* ===== 布局 ===== */
.layout {
  max-width: 1320px; margin: 26px auto; padding: 0 28px 40px;
  display: grid; grid-template-columns: 290px 1fr; gap: 26px;
  align-items: start;
}
@media (max-width: 920px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static !important; }
}

/* ===== 侧栏 ===== */
.sidebar { position: sticky; top: 104px; }
.panel {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px;
}
.search-box { position: relative; }
.search-box::before {
  content: ""; position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px;
  background: no-repeat center/ contain url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239a9aa3' stroke-width='2' stroke-linecap='round'><circle cx='11' cy='11' r='7'/><path d='M21 21l-4.3-4.3'/></svg>");
}
.search-box input {
  width: 100%; padding: 11px 12px 11px 38px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); font-size: 14px; outline: none; background: var(--paper);
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.search-box input:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 4px var(--accent-soft); }

.cat-nav { display: flex; gap: 8px; margin: 14px 0 6px; }
.cat-btn {
  flex: 1; padding: 9px 0; border: 1px solid var(--line); background: var(--paper);
  border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; font-weight: 600;
  color: var(--ink-soft); transition: all .15s;
}
.cat-btn:hover { border-color: var(--accent); color: var(--accent); }
.cat-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent; color: #fff; box-shadow: 0 6px 16px rgba(79,70,229,.35);
}

.font-list {
  list-style: none; border: 1px solid var(--line); border-radius: var(--radius-sm);
  overflow-y: auto; max-height: calc(100vh - 330px); background: var(--surface);
  margin-top: 12px;
}
.font-list li {
  padding: 11px 14px; cursor: pointer; border-bottom: 1px solid var(--line-soft);
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  transition: background .12s;
}
.font-list li:last-child { border-bottom: none; }
.font-list li:hover { background: var(--accent-soft); }
.font-list li.active { background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.font-list .fname { font-size: 14px; font-weight: 500; }
.font-list .ftag {
  font-size: 10px; color: var(--ink-soft); border: 1px solid var(--line);
  padding: 1px 7px; border-radius: 99px; white-space: nowrap; flex-shrink: 0;
}
.list-empty { padding: 22px 14px; text-align: center; color: var(--ink-faint); font-size: 13px; }

/* ===== 内容区 ===== */
.content { min-width: 0; }

/* ===== 预览面板：吸顶常驻，往下滑也一直可见 ===== */
.preview-panel {
  position: sticky; top: 104px; z-index: 40;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 16px 36px -10px rgba(20,20,30,.26), 0 3px 10px rgba(20,20,30,.08);
  overflow: hidden; margin-bottom: 26px;
}
/* 下方标题与卡片明确位于预览面板之下，避免滚动时从面板后方"穿过" */
.section-title, .cards { position: relative; z-index: 1; }
.preview-bar { padding: 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.preview-bar-top { display: flex; align-items: center; gap: 12px; }
.preview-flag {
  flex-shrink: 0; font-size: 11px; font-weight: 700; letter-spacing: 1px;
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  padding: 5px 11px; border-radius: 99px; box-shadow: 0 3px 10px rgba(79,70,229,.35);
}
.preview-bar input[type="text"] {
  flex: 1; min-width: 0; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); font-size: 15px; outline: none; background: var(--surface);
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.preview-bar input[type="text"]:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 4px var(--accent-soft); }
.preview-controls { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--ink-soft); }
.preview-controls label { display: flex; align-items: center; gap: 9px; }
.preview-controls input[type="range"] { accent-color: var(--accent); width: 120px; }
.preview-controls select {
  padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--ink); font-size: 13px; outline: none;
}
.preview-controls select:focus { border-color: var(--accent); }
#font-size-val { font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 600; }

/* 下载行 */
.dl-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-left: auto; }
.dl-row .dl-label { font-size: 12px; color: var(--ink-faint); }
.dl-row .btn-dl { margin: 0; }

/* 预览舞台 */
.preview-stage {
  border-top: 1px solid var(--line);
  background:
    repeating-linear-gradient(0deg, transparent, transparent 31px, var(--line-soft) 31px, var(--line-soft) 32px),
    var(--surface);
  padding: 30px 32px; min-height: 190px;
  display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden;
}
.preview-stage::before {
  content: "PREVIEW"; position: absolute; top: 12px; right: 16px;
  font-size: 10px; letter-spacing: 3px; color: var(--ink-faint); font-weight: 700;
}
.preview-empty { color: var(--ink-faint); font-size: 15px; text-align: center; }
.preview-text { font-size: 38px; line-height: 1.5; word-break: break-word; white-space: pre-wrap; color: var(--ink); transition: font-family .1s; }
.preview-meta { margin-top: 16px; font-size: 12.5px; color: var(--ink-soft); font-family: var(--mono); line-height: 1.6; }
.preview-meta a { color: var(--accent); text-decoration: none; }
.preview-meta a:hover { text-decoration: underline; }

/* 窄屏：预览面板不吸顶，避免遮挡 */
@media (max-width: 920px) {
  .preview-panel { position: static; }
}

/* ===== 字体卡片 ===== */
.section-title {
  display: flex; align-items: baseline; gap: 10px; margin: 30px 2px 16px;
}
.section-title h2 { font-size: 16px; font-weight: 800; letter-spacing: .3px; }
.section-title span { font-size: 12px; color: var(--ink-faint); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; cursor: pointer;
  display: flex; flex-direction: column; gap: 12px;
  transition: box-shadow .18s, transform .18s, border-color .18s;
  animation: cardIn .45s ease both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: #d9d6cf; }
.card.selected { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow); }

.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.card-title { font-size: 16px; font-weight: 800; letter-spacing: .2px; }
.card-tags { display: flex; gap: 6px; flex-wrap: wrap; flex-shrink: 0; }
.tag {
  font-size: 10.5px; padding: 3px 9px; border-radius: 99px; white-space: nowrap; font-weight: 600;
  background: var(--good-bg); color: var(--good);
}
.tag.tag-lang { background: var(--accent-soft); color: var(--accent); }
.tag.tag-warn { background: var(--warn-bg); color: var(--warn); }

.card-sample {
  border: 1px dashed var(--line); border-radius: var(--radius-sm); padding: 16px 18px;
  font-size: 30px; line-height: 1.45; min-height: 84px; color: var(--ink);
  display: flex; align-items: center; overflow: hidden;
  background:
    linear-gradient(0deg, transparent, transparent 31px, var(--line-soft) 31px, var(--line-soft) 32px),
    var(--paper-2);
  transition: background .3s;
}
.card-sample.loaded { background: transparent; border-style: solid; }

.card-info { font-size: 12px; color: var(--ink-soft); display: flex; flex-direction: column; gap: 7px; }
.card-info .weights { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); }
.card-info .weights b { color: var(--ink); font-weight: 600; }
.lic { display: inline-flex; align-items: center; gap: 5px; font-weight: 600; font-size: 11.5px; padding: 2px 9px; border-radius: 99px; width: fit-content; }
.lic::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.lic-lic-ofl { background: var(--good-bg); color: var(--good); }
.lic-lic-notice { background: var(--warn-bg); color: var(--warn); }
.lic-lic-apache, .lic-lic-ufl { background: var(--info-bg); color: var(--info); }
.card-info a { color: var(--accent); text-decoration: none; font-weight: 600; }
.card-info a:hover { text-decoration: underline; }

.card-actions { display: flex; gap: 8px; align-items: center; margin-top: 2px; }
.btn-use {
  border: none; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; padding: 8px 16px; border-radius: var(--radius-sm); cursor: pointer;
  font-size: 13px; font-weight: 600; box-shadow: 0 4px 12px rgba(79,70,229,.30);
  transition: transform .12s, box-shadow .12s;
}
.btn-use:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(79,70,229,.40); }
.btn-dl {
  border: 1px solid var(--line); background: var(--paper); color: var(--ink-soft);
  padding: 8px 14px; border-radius: var(--radius-sm); cursor: pointer; font-size: 13px;
  text-decoration: none; font-weight: 600; transition: border-color .12s, color .12s;
}
.btn-dl:hover { border-color: var(--accent); color: var(--accent); }
.loading-hint { color: var(--ink-faint); font-size: 12px; }

/* ===== 页脚 ===== */
.site-footer {
  text-align: center; padding: 34px 20px 44px; color: var(--ink-faint); font-size: 12px;
  border-top: 1px solid var(--line); margin-top: 20px;
}

/* ===== SEO 简介段（静态、可被搜索引擎抓取） ===== */
.seo-intro {
  max-width: 920px; margin: 36px auto 8px; padding: 22px 26px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.seo-intro h2 { font-size: 17px; font-weight: 800; margin-bottom: 12px; letter-spacing: .2px; }
.seo-intro p { font-size: 13.5px; line-height: 1.8; color: var(--ink-soft); margin-bottom: 10px; }
.seo-intro p:last-child { margin-bottom: 0; }
.seo-intro strong { color: var(--ink); font-weight: 700; }