/* ============================================================
   NETA DAO ACADEMY — academy.netadao.org
   Light paper bg · Dark ink text · Constrained readable width
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;700;900&family=IBM+Plex+Mono:wght@400;500&family=Barlow:wght@300;400;500&display=swap');

:root {
  --bg:         #f5f2eb;
  --bg-raised:  #ede9e0;
  --bg-dark:    #111827;
  --ink:        #111111;
  --ink-mid:    #333333;
  --ink-dim:    #777777;
  --rule:       #111111;
  --rule-thin:  #d4d0c8;
  --pink:       #C9338A;
  --blue:       #3a6fd8;
  --gradient:   linear-gradient(90deg, #C9338A 0%, #5B8EF0 100%);
  --panel-border: 2px solid #111111;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;
  --max-w: 860px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

.grad-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Nav ── */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--bg-dark); border-bottom: var(--panel-border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; height: 52px;
  display: flex; align-items: stretch;
}
.nav-logo {
  display: flex; align-items: center; justify-content: center;
  border-right: var(--panel-border); padding: 0 14px; flex-shrink: 0; width: 68px;
}
.nav-logo-mark { width: 36px; height: 36px; display: block; flex-shrink: 0; }
.nav-links { display: flex; align-items: stretch; list-style: none; margin-left: auto; }
.nav-links li { display: flex; align-items: stretch; border-left: var(--panel-border); }
.nav-links a {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; color: #9aa0b8;
  display: flex; align-items: center; padding: 0 16px; transition: all 0.15s;
}
.nav-links a:hover { color: #e8e6e0; background: #1a2238; }
.nav-links a.active { color: #e8e6e0; }
.nav-links a.nav-cta { background: #e8e6e0; color: #111; }
.nav-links a.nav-cta:hover { background: #c8c6c0; }
.nav-hamburger {
  display: none; background: none; border: none; cursor: pointer;
  padding: 0 14px; border-left: var(--panel-border); margin-left: auto;
}
.nav-hamburger span { display: block; width: 20px; height: 2px; background: #e8e6e0; margin: 4px 0; }

/* ── Page wrapper — constrained width ── */
.page-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 48px;
}
@media (max-width: 640px) { .page-wrap { padding: 0 24px; } }

/* ── Hero ── */
.hero {
  padding: 80px 0 56px;
  border-bottom: var(--panel-border);
  margin-top: 52px;
}
.hero-eyebrow {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim); margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
}
.hero-eyebrow::before { content: ''; display: block; width: 20px; height: 2px; background: currentColor; }
.hero h1 {
  font-family: var(--font-display); font-size: clamp(48px, 7vw, 80px);
  font-weight: 900; text-transform: uppercase; line-height: 0.92;
  letter-spacing: -0.01em; margin-bottom: 24px;
}
.hero-sub { font-size: 17px; color: var(--ink-mid); line-height: 1.75; max-width: 640px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 0; flex-wrap: wrap; }

/* ── Buttons ── */
.btn {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 12px 22px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  border: var(--panel-border); transition: all 0.15s;
}
.btn + .btn { border-left: none; }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: #333; }
.btn-outline { background: transparent; color: var(--ink); }
.btn-outline:hover { background: var(--bg-raised); }
.btn-ghost {
  background: transparent; color: var(--ink-dim); border-color: var(--rule-thin);
  font-size: 10px;
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink); }

/* ── Section anatomy ── */
.section { border-bottom: var(--panel-border); padding: 56px 0; }
.section-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim); margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.section-label::before { content: ''; display: block; width: 20px; height: 2px; background: currentColor; }
.section-title {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 48px);
  font-weight: 900; text-transform: uppercase; line-height: 0.95; margin-bottom: 16px;
}
.section-title-sm {
  font-family: var(--font-display); font-size: clamp(20px, 3vw, 32px);
  font-weight: 900; text-transform: uppercase; line-height: 1; margin-bottom: 12px;
}
.section-body { font-size: 15px; color: var(--ink-mid); line-height: 1.75; max-width: 640px; }

/* ── Current series block ── */
.current-series {
  background: var(--ink);
  color: #f0ede6;
  padding: 40px 48px;
  border: var(--panel-border);
  margin-bottom: 0;
}
.current-badge {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--pink); margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.current-badge::before { content: '●'; font-size: 8px; }
.current-series .section-title { color: #f0ede6; margin-bottom: 6px; }
.current-series-subtitle {
  font-family: var(--font-display); font-size: 20px; font-weight: 400;
  text-transform: uppercase; color: #9aa0b8; margin-bottom: 20px; letter-spacing: 0.02em;
}
.current-series .section-body { color: #9aa0b8; max-width: 100%; }

/* ── Collapsible ── */
.collapsible-header {
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; padding: 20px 0; border-top: var(--rule-thin);
  user-select: none;
}
.collapsible-header:first-child { border-top: none; }
.collapsible-title {
  font-family: var(--font-display); font-size: 20px; font-weight: 900;
  text-transform: uppercase;
}
.collapsible-meta {
  font-family: var(--font-mono); font-size: 10px; color: var(--ink-dim);
  letter-spacing: 0.06em; margin-top: 2px;
}
.collapsible-arrow {
  font-family: var(--font-mono); font-size: 14px; color: var(--ink-dim);
  transition: transform 0.25s; flex-shrink: 0; margin-left: 16px;
}
.collapsible-header.open .collapsible-arrow { transform: rotate(180deg); }
.collapsible-body { display: none; padding-bottom: 8px; }
.collapsible-body.open { display: block; }
.collapsible-toggle-btn {
  font-family: var(--font-mono); font-size: 10px; color: var(--ink-dim);
  background: none; border: 1px solid var(--rule-thin); padding: 6px 14px;
  cursor: pointer; margin-top: 16px; letter-spacing: 0.06em; text-transform: uppercase;
  transition: all 0.15s;
}
.collapsible-toggle-btn:hover { color: var(--ink); border-color: var(--ink); }

/* ── Session items ── */
.session-block { padding: 20px 0; border-bottom: 1px solid var(--rule-thin); }
.session-block:last-child { border-bottom: none; }
.session-header { display: flex; gap: 14px; align-items: baseline; margin-bottom: 12px; flex-wrap: wrap; }
.session-num { font-family: var(--font-mono); font-size: 10px; color: var(--ink-dim); letter-spacing: 0.06em; white-space: nowrap; }
.session-title { font-family: var(--font-display); font-size: 18px; font-weight: 700; text-transform: uppercase; }
.session-date { font-family: var(--font-mono); font-size: 10px; color: var(--ink-dim); white-space: nowrap; }
.session-status { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.06em; text-transform: uppercase; padding: 2px 7px; border: 1px solid; }
.status-past     { border-color: #2a8a4a; color: #2a8a4a; }
.status-current  { border-color: var(--pink); color: var(--pink); }
.status-upcoming { border-color: var(--blue); color: var(--blue); }
.status-hiatus   { border-color: var(--rule-thin); color: var(--ink-dim); }
.reading-list { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.reading-list li { font-size: 13px; color: var(--ink-mid); line-height: 1.65; padding-left: 16px; position: relative; }
.reading-list li::before { content: '—'; position: absolute; left: 0; color: var(--ink-dim); }
.reading-list a { color: var(--blue); text-decoration: underline; text-underline-offset: 2px; text-decoration-color: rgba(58,111,216,0.3); }
.reading-list a:hover { color: var(--pink); }
.reading-list .optional { color: var(--ink-dim); font-style: italic; }
.listen-link { font-family: var(--font-mono); font-size: 10px; color: var(--blue); margin-top: 10px; display: inline-block; transition: color 0.15s; }
.listen-link:hover { color: var(--pink); }

/* ── Roadmap grid ── */
.roadmap-grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  border: var(--panel-border); overflow: hidden; margin-top: 24px;
}
.roadmap-unit {
  padding: 20px 16px; border-right: 1px solid var(--rule-thin);
  border-bottom: 1px solid var(--rule-thin);
}
.roadmap-unit:nth-child(5n) { border-right: none; }
.roadmap-unit:nth-last-child(-n+5) { border-bottom: none; }
.roadmap-unit-num { font-family: var(--font-mono); font-size: 9px; color: var(--ink-dim); letter-spacing: 0.08em; margin-bottom: 6px; }
.roadmap-unit-title { font-family: var(--font-display); font-size: 14px; font-weight: 900; text-transform: uppercase; margin-bottom: 5px; }
.roadmap-unit-desc { font-size: 11px; color: var(--ink-dim); line-height: 1.55; }

/* ── Quote ── */
.keynes-quote {
  border-left: 2px solid var(--rule-thin); padding: 14px 24px;
  margin: 24px 0; font-size: 14px; color: var(--ink-mid);
  line-height: 1.75; font-style: italic;
}
.keynes-quote cite { display: block; margin-top: 8px; font-style: normal; font-family: var(--font-mono); font-size: 10px; color: var(--ink-dim); }

/* ── Footer ── */
.site-footer { border-top: var(--panel-border); background: var(--bg-dark); color: #e8e6e0; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr auto; }
.footer-brand-cell { padding: 28px 48px; border-right: var(--panel-border); }
.footer-links-cell { padding: 28px 48px; }
.footer-brand { font-family: var(--font-display); font-size: 18px; font-weight: 900; text-transform: uppercase; letter-spacing: 0.02em; margin-bottom: 4px; }
.footer-tagline { font-family: var(--font-mono); font-size: 10px; color: #9aa0b8; letter-spacing: 0.06em; }
.footer-links { display: flex; flex-direction: column; gap: 8px; list-style: none; }
.footer-links a { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: #9aa0b8; transition: color 0.15s; }
.footer-links a:hover { color: #e8e6e0; }
.footer-bottom { max-width: 1200px; margin: 0 auto; border-top: var(--panel-border); padding: 14px 48px; display: flex; justify-content: space-between; align-items: center; }
.footer-copy { font-family: var(--font-mono); font-size: 10px; color: #444; }

/* ── Reveal ── */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ── Responsive ── */
@media (max-width: 1024px) { .roadmap-grid { grid-template-columns: repeat(3, 1fr); } .roadmap-unit:nth-child(5n) { border-right: 1px solid var(--rule-thin); } .roadmap-unit:nth-child(3n) { border-right: none; } }
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-brand-cell { border-right: none; border-bottom: var(--panel-border); }
  .roadmap-grid { grid-template-columns: repeat(2, 1fr); }
  .roadmap-unit:nth-child(3n) { border-right: 1px solid var(--rule-thin); }
  .roadmap-unit:nth-child(2n) { border-right: none; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; flex-direction: column; justify-content: center; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 52px; left: 0; right: 0; background: var(--bg-dark); border-bottom: var(--panel-border); }
  .nav-links.open li { border-left: none; border-bottom: 1px solid #1e2640; }
  .nav-links.open a { padding: 14px 20px; }
  .current-series { padding: 28px 24px; }
  .footer-brand-cell, .footer-links-cell { padding: 24px; }
  .footer-bottom { padding: 14px 24px; flex-direction: column; gap: 8px; align-items: flex-start; }
  .roadmap-grid { grid-template-columns: 1fr 1fr; }
}