/* ============================================================
   Prestons BESS — Board Report Design System
   Derived from ./slides theme (Montserrat + Inter, #1A2332, #B8935E)
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #1a2332;
  --bg-hero: linear-gradient(135deg, #1a2332 0%, #243046 50%, #1a2332 100%);
  --text: #1a2332;
  --text-inv: #ffffff;
  --muted: #64748b;
  --brand: #b8935e;
  --brand-10: rgba(184, 147, 94, 0.1);
  --brand-20: rgba(184, 147, 94, 0.2);
  --accent: #3182ce;
  --card: #ffffff;
  --card-alt: #f1f5f9;
  --border: #e2e8f0;
  --border-d: rgba(255, 255, 255, 0.12);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 4px 14px rgba(0, 0, 0, 0.08);
  --radius: 6px;
  --font-h: "Montserrat", system-ui, sans-serif;
  --font-b: "Inter", system-ui, sans-serif;
  --grid-gap: clamp(16px, 2vw, 32px);
  --section-py: clamp(48px, 6vw, 96px);
  --content-w: min(1200px, 90vw);
}

/* --- Reset --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-b);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: clamp(14px, 1vw, 16px);
  overflow-x: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--brand);
  text-decoration: none;
}
ul,
ol {
  padding-left: 1.4em;
}
li {
  margin-bottom: 0.35em;
}

/* --- Typography --- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-h);
  line-height: 1.2;
  color: var(--text);
}
h1 {
  font-size: clamp(28px, 3.5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.02em;
}
h2 {
  font-size: clamp(22px, 2.2vw, 36px);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}
h3 {
  font-size: clamp(15px, 1.3vw, 20px);
  font-weight: 600;
}
h4 {
  font-size: clamp(13px, 1vw, 16px);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
}
p {
  margin-bottom: 0.75em;
}

/* --- Section label (gold bar + text) --- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-h);
  font-size: clamp(11px, 0.85vw, 13px);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 12px;
}
.section-label::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--brand);
}

/* --- Title decorative line --- */
.title-line {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 20px 0 32px;
  position: relative;
}
.title-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 72px;
  height: 3px;
  background: var(--brand);
}

/* --- Layout --- */
.container {
  width: var(--content-w);
  margin: 0 auto;
  padding: 0 16px;
}
section {
  padding: var(--section-py) 0;
}
section:nth-child(even) {
  background: var(--bg-alt);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--grid-gap);
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}
.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--grid-gap);
}
.grid-45-55 {
  display: grid;
  grid-template-columns: 45fr 55fr;
  gap: var(--grid-gap);
  align-items: start;
}
.grid-55-45 {
  display: grid;
  grid-template-columns: 55fr 45fr;
  gap: var(--grid-gap);
  align-items: start;
}

@media (max-width: 900px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .grid-45-55,
  .grid-55-45 {
    grid-template-columns: 1fr;
  }
}

/* --- Card --- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(16px, 1.6vw, 28px);
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s;
}
.card:hover {
  box-shadow: var(--shadow-lg);
}
.card h3 {
  color: var(--brand);
  margin-bottom: 0.5em;
}
.card p,
.card li {
  color: var(--muted);
  font-size: clamp(13px, 0.92vw, 15px);
  line-height: 1.6;
}
.card-dark {
  background: var(--bg-dark);
  border-color: var(--border-d);
  color: var(--text-inv);
}
.card-dark h3 {
  color: var(--brand);
}
.card-dark p,
.card-dark li {
  color: #cbd5e0;
}
.card-gold {
  background: var(--brand-10);
  border-color: var(--brand);
}
.card-gold h3 {
  color: var(--text);
}

/* --- KPI tile --- */
.kpi {
  background: var(--card);
  border-left: 4px solid var(--brand);
  padding: clamp(14px, 1.4vw, 24px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.kpi-label {
  font-family: var(--font-h);
  font-size: clamp(10px, 0.72vw, 12px);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 4px;
}
.kpi-value {
  font-family: var(--font-h);
  font-size: clamp(18px, 1.8vw, 30px);
  font-weight: 700;
  color: var(--brand);
  line-height: 1.2;
}
.kpi-dark {
  background: var(--bg-dark);
  border-left-color: var(--brand);
}
.kpi-dark .kpi-label {
  color: #94a3b8;
}
.kpi-dark .kpi-value {
  color: var(--brand);
}

/* --- Table --- */
.table-wrap {
  overflow-x: auto;
  margin-top: 16px;
}
table.report-table {
  width: 100%;
  border-collapse: collapse;
  font-size: clamp(12px, 0.88vw, 14px);
}
.report-table th {
  font-family: var(--font-h);
  background: var(--bg-dark);
  color: var(--text-inv);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: clamp(11px, 0.78vw, 13px);
}
.report-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  vertical-align: top;
}
.report-table tr:nth-child(even) td {
  background: var(--bg-alt);
}
.report-table td:first-child {
  font-family: var(--font-h);
  font-weight: 600;
  color: var(--text);
}
.report-table .row-total td {
  background: var(--bg-dark) !important;
  color: var(--text-inv) !important;
  font-weight: 700;
  font-size: clamp(13px, 0.95vw, 15px);
}
.report-table .row-total td:nth-child(2) {
  color: var(--brand) !important;
}
.report-table .row-sub td {
  background: var(--brand-10) !important;
  font-weight: 600;
  color: var(--text) !important;
}

/* --- Callout --- */
.callout {
  background: var(--brand-10);
  border-left: 3px solid var(--brand);
  padding: clamp(12px, 1.2vw, 20px);
  margin-top: 20px;
  font-size: clamp(13px, 0.92vw, 15px);
  color: var(--text);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.callout strong {
  display: inline;
}

/* --- Image block --- */
.img-block {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  background: var(--bg);
}
.img-block img {
  width: 100%;
  display: block;
}
.img-caption {
  text-align: center;
  padding: 10px 16px;
  font-size: clamp(11px, 0.78vw, 13px);
  color: var(--muted);
  font-style: italic;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: var(--bg-hero);
  color: var(--text-inv);
  padding: clamp(64px, 8vw, 120px) 0 clamp(48px, 6vw, 80px);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" xmlns="http://www.w3.org/2000/svg"><path d="M40 0L0 0L0 40" fill="none" stroke="rgba(255,255,255,.04)" stroke-width="1"/></svg>');
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-block;
  font-family: var(--font-h);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  border: 1px solid var(--brand);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.hero h1 {
  color: var(--text-inv);
  margin-bottom: 12px;
}
.hero h1 span {
  font-weight: 300;
  display: block;
  color: var(--brand);
}
.hero-sub {
  font-size: clamp(14px, 1.3vw, 22px);
  color: #cbd5e0;
  font-weight: 300;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.hero-date {
  font-size: clamp(11px, 0.8vw, 13px);
  color: #94a3b8;
  margin-bottom: clamp(24px, 3vw, 48px);
}
.hero .grid-3 {
  margin-top: clamp(24px, 3vw, 40px);
}

/* ============================================================
   STICKY TOC (sidebar on desktop, collapsed on mobile)
   ============================================================ */
.toc-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  background: var(--bg-dark);
  z-index: 1000;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}
.toc-sidebar.open {
  transform: translateX(0);
}
.toc-brand {
  padding: 0 20px 16px;
  font-family: var(--font-h);
  font-weight: 700;
  font-size: 14px;
  color: var(--text-inv);
  border-bottom: 1px solid var(--border-d);
}
.toc-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0;
}
.toc-nav a {
  display: block;
  padding: 8px 20px;
  font-size: 13px;
  color: #94a3b8;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}
.toc-nav a:hover,
.toc-nav a.active {
  color: var(--text-inv);
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--brand);
}
.toc-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 1001;
  width: 40px;
  height: 40px;
  background: var(--bg-dark);
  border: 1px solid var(--border-d);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-inv);
  font-size: 18px;
  transition: background 0.15s;
}
.toc-toggle:hover {
  background: #243046;
}
.toc-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.toc-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* On larger screens, always show sidebar and offset content */
@media (min-width: 1400px) {
  .toc-sidebar {
    transform: translateX(0);
  }
  .toc-toggle {
    display: none;
  }
  .toc-overlay {
    display: none;
  }
  body {
    padding-left: 240px;
  }
}

/* ============================================================
   GANTT CHART
   ============================================================ */
.gantt {
  overflow-x: auto;
  margin-top: 24px;
  font-size: clamp(10px, 0.72vw, 12px);
}
.gantt-table {
  width: 100%;
  min-width: 900px;
  border-collapse: collapse;
}
.gantt-table th {
  background: var(--bg-dark);
  color: var(--text-inv);
  padding: 8px 6px;
  text-align: center;
  font-weight: 600;
  font-size: clamp(9px, 0.65vw, 11px);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.gantt-table th:first-child {
  text-align: left;
  padding-left: 12px;
  min-width: 200px;
}
.gantt-table td {
  padding: 4px 2px;
  border-bottom: 1px solid var(--border);
  height: 28px;
  position: relative;
}
.gantt-table td:first-child {
  padding-left: 12px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  font-size: clamp(10px, 0.72vw, 12px);
}
.gantt-bar {
  height: 20px;
  border-radius: 10px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 600;
  color: var(--text-inv);
  white-space: nowrap;
  padding: 0 6px;
  min-width: 8px;
}
.gantt-bar.bar-brand {
  background: var(--brand);
}
.gantt-bar.bar-dark {
  background: var(--bg-dark);
}
.gantt-bar.bar-muted {
  background: #94a3b8;
}
.gantt-bar.bar-accent {
  background: var(--accent);
}
.gantt-milestone {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  background: var(--brand);
  border: 2px solid var(--card);
  border-radius: 50%;
  z-index: 2;
  box-shadow: var(--shadow);
}
.gantt-gate {
  background: red !important;
  border-color: red !important;
}
.gantt-fid-col {
  background: rgba(184, 147, 94, 0.08) !important;
  border-left: 2px dashed var(--brand);
  border-right: 2px dashed var(--brand);
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.btt {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-dark);
  color: var(--text-inv);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 900;
  border: none;
}
.btt.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   COPY-LINK BUTTON
   ============================================================ */
.copy-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-10);
  color: var(--brand);
  font-size: 14px;
  cursor: pointer;
  border: none;
  margin-left: 8px;
  vertical-align: middle;
  transition: background 0.15s;
}
.copy-link:hover {
  background: var(--brand-20);
}
.section-heading {
  display: flex;
  align-items: center;
  gap: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 32px 0;
  font-size: 12px;
  text-align: center;
  letter-spacing: 0.06em;
}

/* ============================================================
   FLOW DIAGRAM (exit pathway)
   ============================================================ */
.flow-row {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
  margin: 24px 0;
}
.flow-col {
  flex: 1;
  min-width: 200px;
  padding: clamp(14px, 1.4vw, 24px);
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  text-align: center;
}
.flow-col h3 {
  margin-bottom: 0.5em;
}
.flow-col p,
.flow-col li {
  font-size: clamp(12px, 0.85vw, 14px);
  color: var(--muted);
}
.flow-arrow {
  display: flex;
  align-items: center;
  padding: 0 8px;
  color: var(--brand);
  font-size: 28px;
  font-weight: 700;
}
@media (max-width: 900px) {
  .flow-row {
    flex-direction: column;
    align-items: center;
  }
  .flow-arrow {
    transform: rotate(90deg);
    padding: 8px 0;
  }
}

/* ============================================================
   SVG ARROW ICONS (for "What Phase 1 Funds" flow)
   ============================================================ */
.step-flow {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 16px;
}
.step-item {
  display: flex;
  align-items: center;
  gap: clamp(6px, 0.4vw, 10px);
  font-weight: 600;
  color: var(--text);
  font-size: clamp(12px, 0.88vw, 14px);
}
.step-arrow {
  width: 20px;
  height: 20px;
  color: var(--brand);
  flex-shrink: 0;
}
.step-arrow svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

/* ============================================================
   PASSCODE OVERLAY
   ============================================================ */
.passcode-overlay{position:fixed;inset:0;z-index:9999;background:var(--bg-dark);display:flex;align-items:center;justify-content:center;transition:opacity .4s}
.passcode-overlay.hidden{opacity:0;pointer-events:none}
.passcode-box{text-align:center;max-width:380px;width:90%}
.passcode-box h2{color:var(--text-inv);text-transform:none;font-size:clamp(20px,2vw,28px);margin-bottom:8px}
.passcode-box p{color:#94A3B8;font-size:14px;margin-bottom:24px}
.passcode-box input{width:100%;padding:12px 16px;border:1px solid var(--border-d);border-radius:var(--radius);background:rgba(255,255,255,.06);color:var(--text-inv);font-size:16px;font-family:var(--font-b);outline:none;transition:border-color .2s}
.passcode-box input:focus{border-color:var(--brand)}
.passcode-box input.error{border-color:red;animation:shake .4s}
.passcode-box button{margin-top:16px;padding:10px 32px;background:var(--brand);color:var(--bg-dark);font-family:var(--font-h);font-weight:600;font-size:14px;border:none;border-radius:var(--radius);cursor:pointer;transition:background .15s}
.passcode-box button:hover{background:#caa572}
.passcode-err{color:red;font-size:13px;margin-top:8px;min-height:20px}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}

/* ============================================================
   LANGUAGE TOGGLE
   ============================================================ */
.lang-toggle{position:fixed;top:16px;right:16px;z-index:1001;display:flex;background:var(--bg-dark);border:1px solid var(--border-d);border-radius:20px;overflow:hidden}
.lang-toggle button{padding:6px 14px;font-family:var(--font-h);font-size:12px;font-weight:600;border:none;cursor:pointer;background:transparent;color:#94A3B8;transition:all .15s}
.lang-toggle button.active{background:var(--brand);color:var(--bg-dark)}

/* ============================================================
   I18N
   ============================================================ */
[data-lang-zh]{display:none !important}
html[lang="zh"] [data-lang-en]{display:none !important}
html[lang="zh"] [data-lang-zh]{display:inline !important}
html[lang="zh"] ul[data-lang-zh],
html[lang="zh"] ol[data-lang-zh],
html[lang="zh"] p[data-lang-zh]{display:block !important}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  body {
    padding-left: 0 !important;
    font-size: 11px;
  }
  .toc-sidebar,
  .toc-toggle,
  .toc-overlay,
  .btt,
  .copy-link,
  .lang-toggle,
  .passcode-overlay {
    display: none !important;
  }
  .hero {
    break-after: page;
  }
  section {
    break-before: page;
    padding: 24px 0;
  }
  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
  .kpi {
    break-inside: avoid;
  }
  .img-block {
    break-inside: avoid;
  }
  .gantt {
    break-inside: avoid;
  }
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }
}