/* ==========================================================================
   台茂 Taimall — 0722 主管班教材網頁
   單一 CSS 入口：變數、字體、版面、元件全部集中於此（依 DESIGN.md）
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;400;500;700&family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root {
  --brand-purple:  #402B56;
  --brand-magenta: #EA1D76;
  --text:          #1D182C;
  --text-muted:    #7E7B86;
  --bg:            #F6F2EF;
  --surface:       #FFFFFF;
  --surface-gray:  #E0DCDB;
  --surface-dark:  #332855;
  --border:        #E0DCDB;
  --overlay:       rgba(29, 24, 44, 0.6);

  --font-sans: Poppins, "Noto Sans TC", "Microsoft JhengHei", PingFang, sans-serif;
  --fs-body: 16px;
  --fs-small: 13px;
  --fs-h2: 24px;
  --fs-h1: 36px;

  --radius-pill: 999px;
  --radius-circle: 50%;
  --radius-sm: 7px;
  --radius-lg: 24px;
  --shadow-card: 0 8px 24px rgba(29, 24, 44, .08);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  --header-h: 76px;
}

/* -------------------------------------------------------------------------
   Reset / base
   ------------------------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { padding-left: 1.4em; }
table { border-collapse: collapse; width: 100%; }
h1, h2, h3, h4 { font-weight: 500; line-height: 1.35; margin: 0 0 var(--space-4); color: var(--text); }
p { margin: 0 0 var(--space-4); }
code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: var(--surface-gray);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.92em;
}
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}
@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
}

/* -------------------------------------------------------------------------
   Header
   ------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(246, 242, 239, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
}
.logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--brand-purple);
  white-space: nowrap;
}
.logo .sep { color: var(--brand-magenta); margin: 0 4px; }
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  flex-wrap: wrap;
}
.main-nav a { padding: 6px 4px; border-radius: var(--radius-sm); }
.main-nav a:hover { color: var(--brand-magenta); }
.main-nav .dot { color: var(--text-muted); }
.header-cta { flex-shrink: 0; }

@media (max-width: 900px) {
  .main-nav { display: none; }
}
@media (max-width: 480px) {
  a.header-cta { display: none; }
}

/* -------------------------------------------------------------------------
   Buttons & badges
   ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-sans);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--brand-magenta);
  color: #fff;
}
.btn-primary:hover { background: #cf1466; box-shadow: 0 6px 16px rgba(234,29,118,.35); }
.btn-secondary {
  background: var(--surface);
  color: var(--brand-purple);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--brand-purple); }
.btn-ghost {
  background: transparent;
  color: var(--brand-purple);
  border-color: var(--brand-purple);
}
.btn-sm { padding: 7px 16px; font-size: 13px; }
.btn[disabled] { opacity: .6; cursor: default; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  font-weight: 500;
  background: var(--surface-gray);
  color: var(--text-muted);
}
.pill-magenta { background: rgba(234,29,118,.1); color: var(--brand-magenta); }
.pill-purple { background: rgba(64,43,86,.08); color: var(--brand-purple); }
.pill-teacher {
  background: var(--brand-purple);
  color: #fff;
}

.badge-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-circle);
  background: var(--brand-purple);
  color: #fff;
  font-family: Poppins, sans-serif;
  font-weight: 700;
  font-size: 22px;
  flex-shrink: 0;
  transition: background .15s ease;
}
.card:hover .badge-circle { background: var(--brand-magenta); }
.badge-circle-lg {
  width: 96px;
  height: 96px;
  font-size: 36px;
}

/* -------------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------------- */
.hero {
  padding: var(--space-24) 0 var(--space-16);
  overflow: hidden;
}
.hero-display {
  font-family: Poppins, sans-serif;
  font-weight: 200;
  font-size: clamp(56px, 8vw, 108px);
  line-height: 0.95;
  color: var(--brand-purple);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-4);
  white-space: nowrap;
}
.hero-title {
  font-size: clamp(26px, 4vw, var(--fs-h1));
  font-weight: 700;
  color: var(--text);
  margin: 0 0 var(--space-4);
}
.hero-desc {
  max-width: 720px;
  color: var(--text-muted);
  font-size: 17px;
}
.hero-demo {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-16) 0 var(--space-8);
  flex-wrap: wrap;
}
.hero-demo .hero-quote {
  flex: 1 1 420px;
}
.slide-quote {
  border-left: 4px solid var(--brand-magenta);
  padding-left: var(--space-4);
  color: var(--text-muted);
  font-size: 15px;
  margin: 0;
}

/* -------------------------------------------------------------------------
   Sections & cards
   ------------------------------------------------------------------------- */
section { padding: var(--space-16) 0; }
.section-head { margin-bottom: var(--space-8); }
.section-eyebrow {
  font-family: Poppins, sans-serif;
  font-weight: 200;
  font-size: clamp(36px, 6vw, 72px);
  color: var(--brand-purple);
  margin: 0 0 var(--space-2);
  line-height: 1;
}
.section-title { font-size: var(--fs-h2); font-weight: 500; margin: 0; }
.section-sub { color: var(--text-muted); margin-top: var(--space-2); }

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
}

.grid {
  display: grid;
  gap: var(--space-6);
}
.grid-modules { grid-template-columns: repeat(2, 1fr); }
.grid-demos { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1024px) {
  .grid-demos { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .grid-modules, .grid-demos { grid-template-columns: 1fr; }
}

.module-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.module-card h3 { font-size: 20px; margin: 0; }
.module-card p { color: var(--text-muted); margin: 0; flex: 1; }

.demo-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.demo-card-top {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.demo-card h3 { font-size: 17px; margin: 0; }
.demo-card .demo-summary { color: var(--text-muted); font-size: 14.5px; margin: var(--space-2) 0; }
.demo-card .tags { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-2); }
.demo-card .actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: var(--space-2);
}
.demo-card .actions .btn { flex: 1 1 auto; }

/* -------------------------------------------------------------------------
   Work Brief card
   ------------------------------------------------------------------------- */
.work-brief {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border-left: 6px solid var(--brand-magenta);
  padding: var(--space-8);
  margin-bottom: var(--space-16);
  position: relative;
}
.work-brief-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.work-brief-head h2 {
  margin: 0;
  font-size: 20px;
  color: var(--brand-purple);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.work-brief blockquote {
  margin: 0;
  font-size: 16.5px;
  color: var(--text);
  white-space: pre-line;
}
.work-brief blockquote p { margin: 0 0 var(--space-2); }

/* -------------------------------------------------------------------------
   Generic content blocks (rendered from markdown)
   ------------------------------------------------------------------------- */
.content-section {
  margin-bottom: var(--space-16);
}
.content-section > h2 {
  font-size: var(--fs-h2);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border-bottom: 2px solid var(--surface-gray);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-6);
}
.content-section h3 { font-size: 19px; margin-top: var(--space-6); }
.content-section h4 { font-size: 16px; color: var(--brand-purple); }
.content-body p { color: var(--text); }
.content-body strong { font-weight: 700; color: var(--brand-purple); }

.table-wrap {
  overflow-x: auto;
  margin: var(--space-4) 0 var(--space-6);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.table-wrap table { min-width: 100%; }
.table-wrap th, .table-wrap td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 14.5px;
  vertical-align: top;
}
.table-wrap th {
  background: var(--surface-gray);
  color: var(--brand-purple);
  font-weight: 700;
  white-space: nowrap;
}
.table-wrap tr:last-child td { border-bottom: none; }
.table-wrap tr:nth-child(even) td { background: rgba(224,220,219,0.25); }

blockquote {
  margin: var(--space-4) 0;
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--surface-gray);
  color: var(--text-muted);
  background: var(--bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
blockquote.prompt-quote {
  border-left-color: var(--brand-magenta);
  background: rgba(234,29,118,.05);
  color: var(--text);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}
blockquote.prompt-quote .quote-text { flex: 1 1 320px; white-space: pre-line; }

pre.code-block {
  background: var(--brand-purple);
  color: #F6F2EF;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
  margin: var(--space-4) 0;
}
pre.code-block code { background: none; color: inherit; padding: 0; }

.checklist { list-style: none; padding-left: 0; }
.checklist li { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 6px; }
.checklist input { margin-top: 4px; accent-color: var(--brand-magenta); }

hr.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-8) 0;
}

.copy-btn {
  background: var(--brand-magenta);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  flex-shrink: 0;
  white-space: nowrap;
  transition: background .15s ease;
}
.copy-btn:hover { background: #cf1466; }
.copy-btn.copied { background: var(--brand-purple); }

/* -------------------------------------------------------------------------
   Package / downloads
   ------------------------------------------------------------------------- */
.package-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-6);
}
.package-file {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
}
.package-file .fname { font-weight: 500; font-size: 14px; color: var(--brand-purple); word-break: break-all; }
.package-file .fdesc { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.downloads-table td, .downloads-table th { vertical-align: middle; }

/* -------------------------------------------------------------------------
   Prev/Next nav
   ------------------------------------------------------------------------- */
.demo-pager {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-size: 14px;
}
.demo-pager a { color: var(--brand-purple); font-weight: 500; }
.demo-pager a:hover { color: var(--brand-magenta); }
.demo-pager .disabled { color: var(--text-muted); opacity: .5; pointer-events: none; }

/* -------------------------------------------------------------------------
   Footer
   ------------------------------------------------------------------------- */
.site-footer {
  background: var(--surface-dark);
  color: #fff;
  padding: var(--space-12) 0;
  margin-top: var(--space-16);
}
.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.site-footer .foot-brand { font-weight: 700; font-size: 18px; }
.site-footer .foot-note { color: rgba(255,255,255,.7); font-size: 13.5px; max-width: 720px; }
.site-footer a.foot-link { color: var(--brand-magenta); }

/* -------------------------------------------------------------------------
   Codex reference page
   ------------------------------------------------------------------------- */
.codex-banner {
  background: rgba(64,43,86,.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  color: var(--brand-purple);
  font-size: 14.5px;
  margin-bottom: var(--space-8);
}
.content-body a { color: var(--brand-magenta); text-decoration: underline; text-underline-offset: 2px; }

/* -------------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .work-brief { padding: var(--space-4); }
  .hero { padding: var(--space-16) 0 var(--space-8); }
  section { padding: var(--space-8) 0; }
  .demo-card .actions { flex-direction: column; }
  .demo-card .actions .btn { width: 100%; }
}