/* =============================================================
   BPAT White Paper — Standalone Reading Experience
   ============================================================= */

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

:root {
  --black:    #04060F;
  --near-black: #080C18;
  --dark:     #0D1120;
  --card-bg:  #0f1525;
  --border:   rgba(255,255,255,0.07);
  --gold:     #C8A96E;
  --gold-light: #e0c98a;
  --blue:     #00BFFF;
  --white:    #F5F5F7;
  --white-dim: rgba(245,245,247,0.65);
  --serif:    'Cormorant Garamond', Georgia, serif;
  --sans:     'Inter', system-ui, sans-serif;
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

h1,h2,h3,h4 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--white);
  word-break: break-word;
}
em { font-style: italic; color: var(--gold); }
p { color: var(--white-dim); line-height: 1.85; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* --- Progress Bar --- */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--blue));
  z-index: 2000;
  transition: width 0.15s linear;
  width: 0%;
}

/* --- Navigation --- */
.wp-nav {
  position: sticky;
  top: 0;
  background: rgba(4,6,15,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  padding: 14px 0;
}
.wp-nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wp-back {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--white-dim);
  transition: color var(--transition);
}
.wp-back:hover { color: var(--white); }
.wp-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
}
.wp-logo-img { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; border: 1px solid var(--gold); }
.wp-nav-cta {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 20px;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 4px;
  transition: all var(--transition);
}
.wp-nav-cta:hover { background: var(--gold); color: var(--black); }

/* --- Header --- */
.wp-header {
  background: linear-gradient(180deg, #080C18, var(--black));
  padding: 80px 24px 72px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.wp-header-inner { max-width: 680px; margin: 0 auto; }
.wp-header-logo {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(200,169,110,0.4);
  box-shadow: 0 0 30px rgba(0,191,255,0.2);
  margin-bottom: 20px;
}
.wp-header-eyebrow {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.wp-header-title { font-size: clamp(2.4rem, 5vw, 4rem); margin-bottom: 16px; }
.wp-header-sub { font-size: 1rem; color: var(--white-dim); margin-bottom: 28px; }
.wp-header-meta {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--white-dim);
}
.wp-header-meta span { display: flex; align-items: center; gap: 7px; }
.wp-header-meta i { color: var(--gold); }

/* --- Layout --- */
.wp-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 48px;
  align-items: start;
}

/* --- TOC --- */
.wp-toc {
  position: sticky;
  top: 72px;
  padding: 32px 0;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
.toc-title {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  font-weight: 500;
}
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.toc-link {
  display: block;
  padding: 7px 12px;
  font-size: 0.8rem;
  color: var(--white-dim);
  border-left: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.4;
}
.toc-link:hover { color: var(--white); border-left-color: var(--gold); padding-left: 16px; }
.toc-link.active { color: var(--gold); border-left-color: var(--gold); }

/* --- Main Content --- */
.wp-main { padding: 48px 0 80px; }

.wp-chapter {
  margin-bottom: 72px;
  scroll-margin-top: 90px;
}
.chapter-number {
  font-family: var(--serif);
  font-size: 5rem;
  font-weight: 300;
  color: rgba(200,169,110,0.08);
  line-height: 1;
  margin-bottom: -24px;
  user-select: none;
}
.wp-chapter h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.wp-chapter h3 {
  font-size: 1.2rem;
  margin: 32px 0 12px;
  color: var(--white);
}
.wp-chapter p { margin-bottom: 16px; }

/* Highlight box */
.wp-highlight-box {
  background: rgba(0,191,255,0.05);
  border: 1px solid rgba(0,191,255,0.18);
  border-radius: 10px;
  padding: 24px 28px;
  margin: 24px 0;
}
.highlight-label {
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 10px;
  font-weight: 500;
}
.wp-highlight-box p { margin: 0; font-size: 0.9rem; }
.wp-highlight-box strong { color: var(--white); }

/* 3-Col Prop Grid */
.wp-three-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.wp-prop-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 20px;
  transition: all 0.3s;
}
.wp-prop-card:hover { border-color: rgba(200,169,110,0.2); }
.prop-icon { font-size: 1.3rem; color: var(--gold); margin-bottom: 12px; }
.wp-prop-card h4 { font-size: 1rem; margin-bottom: 8px; }
.wp-prop-card p { font-size: 0.83rem; margin: 0; }

/* Data Table */
.wp-data-table { overflow-x: auto; margin: 24px 0; }
.wp-data-table table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.wp-data-table th {
  text-align: left;
  padding: 10px 16px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.wp-data-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--white-dim); }
.wp-data-table td:first-child { color: var(--white-dim); }
.wp-data-table td:last-child { color: var(--white); font-weight: 400; }
.wp-data-table tr:last-child td { border-bottom: none; }
.wp-data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* Structure Visual */
.wp-structure-visual { display: flex; flex-direction: column; align-items: center; gap: 0; margin: 28px 0; }
.sv-tier {
  width: 100%;
  max-width: 500px;
  text-align: center;
  padding: 20px 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.sv-top { background: rgba(200,169,110,0.1); border-color: rgba(200,169,110,0.3); max-width: 500px; }
.sv-mid { background: rgba(0,191,255,0.06); border-color: rgba(0,191,255,0.2); max-width: 400px; }
.sv-bot { background: var(--card-bg); max-width: 300px; }
.sv-value { font-family: var(--serif); font-size: 1.3rem; color: var(--white); }
.sv-label { font-size: 0.78rem; color: var(--white-dim); margin-top: 4px; }
.sv-arrow { color: var(--gold); opacity: 0.5; margin: 6px 0; font-size: 0.9rem; }

/* Notice */
.wp-notice {
  display: flex;
  gap: 14px;
  background: rgba(200,169,110,0.05);
  border: 1px solid rgba(200,169,110,0.15);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 24px 0;
  font-size: 0.85rem;
}
.wp-notice i { color: var(--gold); margin-top: 3px; flex-shrink: 0; font-size: 1rem; }
.wp-notice div { color: var(--white-dim); }
.wp-notice strong { color: var(--gold); }

/* WP List */
.wp-list { list-style: none; margin: 16px 0; display: flex; flex-direction: column; gap: 10px; }
.wp-list li {
  padding-left: 20px;
  position: relative;
  font-size: 0.9rem;
  color: var(--white-dim);
}
.wp-list li::before { content: '—'; position: absolute; left: 0; color: var(--gold); }
.wp-list strong { color: var(--white); }

/* Supply Grid */
.wp-supply-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.supply-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 20px;
}
.supply-pct { font-family: var(--serif); font-size: 2rem; color: var(--gold); margin-bottom: 6px; }
.supply-name { font-size: 0.88rem; color: var(--white); font-weight: 500; margin-bottom: 8px; }
.supply-desc { font-size: 0.8rem; color: var(--white-dim); }

/* Phases List */
.wp-phases-list { display: flex; flex-direction: column; gap: 12px; margin: 16px 0; }
.phases-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 80px 1fr 2fr;
  gap: 16px;
  align-items: start;
}
.pi-num { font-family: var(--serif); font-size: 0.8rem; color: var(--gold); font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; padding-top: 2px; }
.pi-name { font-size: 0.9rem; color: var(--white); font-weight: 500; }
.pi-desc { font-size: 0.83rem; color: var(--white-dim); }

/* Lifecycle */
.wp-lifecycle { display: flex; flex-direction: column; align-items: flex-start; gap: 0; margin: 24px 0; }
.lc-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  width: 100%;
}
.lc-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(200,169,110,0.15);
  border: 1px solid rgba(200,169,110,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--gold);
  flex-shrink: 0;
}
.lc-text strong { display: block; color: var(--white); font-size: 0.95rem; margin-bottom: 4px; }
.lc-text p { font-size: 0.83rem; margin: 0; }
.lc-arrow { color: var(--gold); opacity: 0.3; padding: 4px 28px; font-size: 0.8rem; }

/* Governance Grid */
.wp-governance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.gov-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 20px;
  transition: all 0.3s;
}
.gov-card:hover { border-color: rgba(200,169,110,0.2); }
.gov-card i { font-size: 1.3rem; color: var(--blue); margin-bottom: 12px; display: block; }
.gov-card h4 { font-size: 0.95rem; margin-bottom: 8px; }
.gov-card p { font-size: 0.83rem; margin: 0; }

/* Risk Grid */
.wp-risk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.risk-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 20px;
}
.risk-icon { font-size: 1.2rem; color: rgba(255,107,107,0.7); margin-bottom: 12px; }
.risk-card h4 { font-size: 0.95rem; margin-bottom: 8px; }
.risk-card p { font-size: 0.83rem; margin: 0; }

/* Legal Block */
.wp-legal-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
}
.wp-legal-block h3 { margin: 0 0 10px; font-size: 1.05rem; }
.wp-legal-block p { font-size: 0.88rem; margin-bottom: 24px; }
.wp-legal-block p:last-child { margin-bottom: 0; }

/* Roadmap */
.wp-roadmap { display: flex; flex-direction: column; gap: 16px; margin: 24px 0; }
.rm-phase {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  transition: all 0.3s;
}
.rm-phase.rm-done { opacity: 0.65; }
.rm-phase.rm-active { border-color: rgba(0,191,255,0.3); background: rgba(0,191,255,0.04); }
.rm-phase-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.rm-phase-num {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  min-width: 60px;
}
.rm-phase-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--white);
  flex: 1;
}
.rm-phase-status {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}
.status-done { color: rgba(255,255,255,0.3); }
.status-active { color: #00E676; }
.status-upcoming { color: var(--gold); }
.pulse-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #00E676;
  box-shadow: 0 0 6px #00E676;
  animation: blink 1.5s ease-in-out infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

/* CTA Block */
.wp-cta-block {
  text-align: center;
  padding: 56px 32px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-top: 48px;
}
.wp-cta-logo { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; margin-bottom: 20px; border: 1.5px solid rgba(200,169,110,0.4); }
.wp-cta-block h3 { font-size: 1.8rem; margin-bottom: 12px; }
.wp-cta-block p { font-size: 0.9rem; max-width: 480px; margin: 0 auto 28px; }
.btn-wp-primary, .btn-wp-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: 4px;
  margin: 6px;
  transition: all 0.3s;
}
.btn-wp-primary { background: var(--gold); color: var(--black); border: none; }
.btn-wp-primary:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-wp-ghost { background: transparent; border: 1px solid var(--border); color: var(--white); }
.btn-wp-ghost:hover { border-color: rgba(255,255,255,0.2); }

/* Footer */
.wp-footer {
  background: var(--near-black);
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
}
.wp-footer p { font-size: 0.78rem; color: rgba(255,255,255,0.25); line-height: 1.8; margin-bottom: 8px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .wp-layout { grid-template-columns: 1fr; padding: 0 16px; }
  .wp-toc { display: none; }
}

@media (max-width: 600px) {
  .wp-header { padding: 60px 16px 48px; }
  .phases-item { grid-template-columns: 1fr; gap: 6px; }
  .wp-three-col { grid-template-columns: 1fr; }
  .rm-phase-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .wp-data-table table { min-width: 440px; }
  .wp-nav-inner .wp-back span { display: none; }
}