/* ============================================
   Furever & Co. — Shared Design System
   ใช้ร่วมโดย index.html / business.html / functions.html
   ============================================ */

:root {
  --c-cream: #fffefb;
  --c-cream-deep: #f7f3e8;
  --c-blue: #abcee9;
  --c-blue-deep: #4099e4;
  --c-yellow: #eeec89;
  --c-mustard: #ffc750;
  --c-brown: #9d8477;
  --c-ink: #2a2722;
  --c-ink-soft: #4a443c;
  --c-muted: #8c8275;
  --c-line: rgba(42, 39, 34, 0.1);
  --c-line-soft: rgba(42, 39, 34, 0.06);
  --r-card: 10px;
  --r-pill: 999px;
  --doc-width: 860px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans Thai', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--c-ink-soft);
  background: var(--c-cream);
  font-size: 16px;
  line-height: 1.75;
}

/* ============================================
   GLOBAL NAV (shared across 3 pages)
   ============================================ */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 254, 251, 0.94);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--c-line);
}
.global-nav .inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.global-nav .brand {
  font-weight: 800;
  font-size: 16px;
  color: var(--c-ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.global-nav .brand .paw { color: var(--c-mustard); margin-right: 4px; }
.global-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
}
.global-nav a.nav-link {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  color: var(--c-ink-soft);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .15s;
}
.global-nav a.nav-link:hover {
  background: var(--c-cream-deep);
  color: var(--c-ink);
}
.global-nav a.nav-link.active {
  background: var(--c-ink);
  color: var(--c-cream);
  border-color: var(--c-ink);
}
@media (max-width: 700px) {
  .global-nav .inner { padding: 12px 18px; flex-wrap: wrap; }
  .global-nav a.nav-link { padding: 6px 12px; font-size: 13px; }
}

/* ============================================
   DOC CONTAINER
   ============================================ */
.doc {
  max-width: var(--doc-width);
  margin: 0 auto;
  padding: 48px 32px 120px;
}

.doc-header {
  border-bottom: 1px solid var(--c-line);
  padding-bottom: 28px;
  margin-bottom: 44px;
}
.doc-header .eyebrow {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-blue-deep);
  font-weight: 700;
  margin-bottom: 14px;
}
.doc-header h1 {
  font-family: 'Plus Jakarta Sans', 'Noto Sans Thai', sans-serif;
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.15;
  margin: 0 0 12px;
  color: var(--c-ink);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.doc-header .subtitle {
  font-size: 18px;
  color: var(--c-ink-soft);
  margin: 0 0 18px;
  font-weight: 500;
}
.doc-header .meta {
  font-size: 13px;
  color: var(--c-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.doc-header .meta span::before { content: "·"; margin-right: 16px; color: var(--c-line); }
.doc-header .meta span:first-child::before { content: ""; margin: 0; }

/* ============================================
   TYPOGRAPHY
   ============================================ */
h2 {
  font-family: 'Plus Jakarta Sans', 'Noto Sans Thai', sans-serif;
  font-size: 28px;
  line-height: 1.25;
  margin: 56px 0 8px;
  color: var(--c-ink);
  font-weight: 700;
  letter-spacing: -0.01em;
  scroll-margin-top: 80px;
}
h2[data-num]::before {
  content: attr(data-num);
  display: inline-block;
  color: var(--c-muted);
  font-weight: 600;
  margin-right: 14px;
  font-size: 18px;
  vertical-align: 4px;
}
h3 {
  font-family: 'Plus Jakarta Sans', 'Noto Sans Thai', sans-serif;
  font-size: 19px;
  line-height: 1.35;
  margin: 32px 0 8px;
  color: var(--c-ink);
  font-weight: 700;
}
h4 {
  font-size: 15px;
  margin: 22px 0 6px;
  color: var(--c-ink);
  font-weight: 700;
}
p { margin: 0 0 14px; }
p.intro {
  font-size: 17px;
  color: var(--c-ink-soft);
  margin: 0 0 22px;
}
strong { color: var(--c-ink); font-weight: 700; }
a { color: var(--c-blue-deep); text-decoration: none; border-bottom: 1px solid currentColor; }
a:hover { color: var(--c-ink); }
code { font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace; font-size: 0.9em; background: var(--c-cream-deep); padding: 2px 6px; border-radius: 4px; color: var(--c-brown); }
ul, ol { padding-left: 22px; margin: 0 0 18px; }
ul li, ol li { margin-bottom: 6px; }

/* ============================================
   CALLOUTS
   ============================================ */
.takeaway {
  border-left: 3px solid var(--c-mustard);
  background: rgba(255, 199, 80, 0.1);
  padding: 12px 18px;
  border-radius: 0 6px 6px 0;
  margin: 18px 0 22px;
  font-size: 15px;
}
.takeaway::before {
  content: "Key takeaway · ";
  font-weight: 700;
  color: var(--c-ink);
  letter-spacing: 0.02em;
}
.note {
  background: var(--c-cream-deep);
  padding: 12px 18px;
  border-radius: 6px;
  margin: 16px 0;
  font-size: 14px;
  color: var(--c-ink-soft);
}
.note strong { color: var(--c-ink); }
.quote {
  border-left: 3px solid var(--c-blue-deep);
  padding: 10px 16px;
  margin: 10px 0;
  font-style: italic;
  background: rgba(64, 153, 228, 0.04);
  border-radius: 0 6px 6px 0;
  color: var(--c-ink);
  font-size: 15px;
}
.quote .src {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--c-muted);
  font-style: normal;
}

/* ============================================
   MERMAID — diagram cards with zoom button
   ============================================ */
.figure {
  position: relative;
  margin: 26px -80px 30px;
  text-align: center;
}
.figure.wide {
  margin-left: -140px;
  margin-right: -140px;
}
@media (max-width: 1240px) {
  .figure.wide { margin-left: -40px; margin-right: -40px; }
}
@media (max-width: 1100px) {
  .figure, .figure.wide { margin-left: 0; margin-right: 0; }
}
.figure pre.mermaid {
  background: white;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-card);
  padding: 28px;
  margin: 0;
  overflow-x: auto;
  min-height: 200px;
}
.figure pre.mermaid svg {
  max-width: 100%;
  height: auto;
}
.figure .caption {
  font-size: 13px;
  color: var(--c-muted);
  margin-top: 10px;
  font-style: italic;
}
.figure .zoom-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: white;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-ink-soft);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(42, 39, 34, 0.06);
  transition: all .15s;
  z-index: 2;
  font-family: inherit;
}
.figure .zoom-btn:hover {
  background: var(--c-blue-deep);
  color: white;
  border-color: var(--c-blue-deep);
}

/* Zoom modal */
dialog.zoom-modal {
  width: 96vw;
  max-width: 96vw;
  height: 92vh;
  max-height: 92vh;
  padding: 0;
  border: none;
  border-radius: 14px;
  background: white;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}
dialog.zoom-modal::backdrop {
  background: rgba(42, 39, 34, 0.75);
  backdrop-filter: blur(4px);
}
dialog.zoom-modal .modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 22px;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-cream);
}
dialog.zoom-modal .modal-title {
  font-weight: 700;
  color: var(--c-ink);
  font-size: 14px;
}
dialog.zoom-modal .modal-close {
  background: var(--c-cream-deep);
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--c-ink-soft);
  font-family: inherit;
}
dialog.zoom-modal .modal-close:hover { background: var(--c-ink); color: var(--c-cream); }
dialog.zoom-modal .modal-content {
  width: 100%;
  height: calc(92vh - 65px);
  overflow: auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
dialog.zoom-modal .modal-content svg {
  max-width: none;
  max-height: none;
  width: auto;
  height: auto;
  min-width: 80%;
}

/* ============================================
   TABLES
   ============================================ */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 24px;
  font-size: 14px;
}
thead th {
  background: var(--c-cream-deep);
  text-align: left;
  padding: 10px 14px;
  font-weight: 700;
  color: var(--c-ink);
  border-bottom: 2px solid var(--c-line);
}
tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--c-line-soft);
  vertical-align: top;
}
tbody tr:hover td { background: rgba(64, 153, 228, 0.03); }

/* ============================================
   PILLS & BADGES
   ============================================ */
.pill {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.pill.H { background: #ffd6d6; color: #8a1f1f; }
.pill.M { background: #ffe9b8; color: #7a5300; }
.pill.L { background: #d0eedb; color: #1f6a3a; }
.pill.tbd { background: #f4dfdf; color: #a04141; }

.role-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 600;
  margin-right: 6px;
}
.role-badge.visitor { background: #e6f0fa; color: #2a5a85; }
.role-badge.member { background: #fff4cf; color: #7a5300; }
.role-badge.shop { background: #ffe8c8; color: #804600; }
.role-badge.adopter { background: #e8f3e0; color: #3d6a2a; }
.role-badge.sponsor { background: #f0e0f0; color: #5c2a5a; }
.role-badge.admin { background: #2a2722; color: #fffefb; }

.perm-yes { color: #1f6a3a; font-weight: 700; }
.perm-no { color: #c1bdb4; }
.perm-partial { color: #a07900; font-weight: 700; }
.perm-matrix th, .perm-matrix td { text-align: center; }
.perm-matrix th:first-child, .perm-matrix td:first-child { text-align: left; }

.phase-p1 { background: #d0eedb; color: #1f6a3a; padding: 1px 7px; border-radius: 4px; font-size: 11px; font-weight: 700; }
.phase-p2 { background: #ffe9b8; color: #7a5300; padding: 1px 7px; border-radius: 4px; font-size: 11px; font-weight: 700; }
.phase-p3 { background: #f4dfdf; color: #a04141; padding: 1px 7px; border-radius: 4px; font-size: 11px; font-weight: 700; }

/* ============================================
   GRIDS & CARDS
   ============================================ */
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 800px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
}

.card {
  background: white;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-card);
  padding: 18px 20px;
}
.card.blue { background: var(--c-blue); border: none; }
.card.yellow { background: var(--c-yellow); border: none; }
.card.cream { background: var(--c-cream-deep); border: none; }
.card.brown { background: var(--c-brown); color: var(--c-cream); border: none; }
.card .num { font-size: 28px; font-weight: 800; color: var(--c-blue-deep); margin-bottom: 6px; line-height: 1; }
.card h3 { margin: 4px 0 6px; }
.card p { margin: 0; font-size: 14px; }

/* ============================================
   SCENE BLOCK (storyboard)
   ============================================ */
.scene {
  margin: 26px 0;
  padding: 22px 24px;
  background: white;
  border: 1px solid var(--c-line-soft);
  border-left: 4px solid var(--c-blue-deep);
  border-radius: var(--r-card);
}
.scene .label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-blue-deep);
  font-weight: 700;
  margin-bottom: 4px;
}
.scene h3 { margin: 0 0 8px; }
.scene .goal { color: var(--c-muted); font-style: italic; margin-bottom: 14px; font-size: 14px; }
.scene.alt { border-left-color: var(--c-mustard); }
.scene.alt .label { color: var(--c-brown); }
.twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 18px 0 24px;
}
@media (max-width: 800px) { .twocol { grid-template-columns: 1fr; } }

/* ============================================
   MODULE BLOCK (functions.html)
   ============================================ */
.module {
  margin: 22px 0 30px;
  padding: 20px 24px;
  background: white;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-card);
}
.module .mod-id {
  display: inline-block;
  padding: 2px 10px;
  background: var(--c-blue-deep);
  color: white;
  border-radius: 4px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-right: 10px;
}
.module h3 { display: inline; margin: 0; }
.module .mod-intent {
  color: var(--c-muted);
  font-size: 14px;
  margin: 8px 0 14px;
  font-style: italic;
}
.module table { margin: 0; font-size: 13px; }
.module table th { font-size: 12px; }
.fn-id {
  font-family: 'Plus Jakarta Sans', monospace;
  font-size: 12px;
  color: var(--c-brown);
  font-weight: 700;
  white-space: nowrap;
}

/* ============================================
   ACTION LIST (no timeline)
   ============================================ */
.action-list { counter-reset: actstep; padding-left: 0; list-style: none; margin: 18px 0 24px; }
.action-list li {
  counter-increment: actstep;
  position: relative;
  padding: 14px 18px 14px 60px;
  background: white;
  border: 1px solid var(--c-line-soft);
  border-radius: 8px;
  margin-bottom: 10px;
}
.action-list li::before {
  content: counter(actstep);
  position: absolute;
  left: 16px;
  top: 14px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--c-blue-deep);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 13px;
}
.action-list li strong { display: block; color: var(--c-ink); margin: 0 0 4px; font-size: 15px; }
.action-list li .dep {
  display: inline-block;
  color: var(--c-brown);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.action-list li .detail { font-size: 14px; color: var(--c-ink-soft); }

/* ============================================
   PHASE / STAGE PANEL (no dates)
   ============================================ */
.stages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 18px 0; }
@media (max-width: 800px) { .stages { grid-template-columns: 1fr 1fr; } }
.stage {
  padding: 16px;
  border-radius: 8px;
  border: 1px solid var(--c-line-soft);
  background: white;
}
.stage .s { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-blue-deep); font-weight: 700; }
.stage h4 { margin: 6px 0 8px; font-size: 15px; }
.stage ul { padding-left: 18px; font-size: 13px; margin: 0; }

/* ============================================
   COST TIER CARD (functions.html)
   ============================================ */
.tier-card {
  margin: 18px 0;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-card);
  overflow: hidden;
}
.tier-card .tier-head {
  padding: 18px 22px;
  background: var(--c-cream-deep);
  border-bottom: 1px solid var(--c-line-soft);
}
.tier-card.dev .tier-head { background: #e6f0fa; }
.tier-card.launch .tier-head { background: #fff4cf; }
.tier-card.production .tier-head { background: #e8f3e0; }
.tier-card .tier-head h3 { margin: 0 0 4px; font-size: 18px; }
.tier-card .tier-head .assume { font-size: 13px; color: var(--c-muted); margin: 0; }
.tier-card .tier-body { padding: 4px 0; }
.tier-card table { margin: 0; font-size: 13px; }
.tier-card .total-row td {
  background: var(--c-cream-deep);
  font-weight: 700;
  color: var(--c-ink);
}

/* ============================================
   PALETTE / FOOTER
   ============================================ */
.palette { display: flex; gap: 8px; margin: 12px 0 4px; }
.swatch { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--c-line-soft); }

.doc-footer {
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  color: var(--c-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  .global-nav { display: none; }
  .doc { max-width: 100%; padding: 0; }
  .figure .zoom-btn { display: none; }
  .figure, .figure.wide { margin-left: 0; margin-right: 0; }
  h2 { page-break-after: avoid; }
  .figure, .scene, .module, table, .tier-card { page-break-inside: avoid; }
}