/* ===== Kaiten Roadmap 2026 — static styles ===== */
:root {
  --background: #ffffff;
  --foreground: hsl(0 0% 18%);
  --card: #ffffff;
  --muted: hsl(240 5% 96%);
  --muted-foreground: hsl(240 4% 46%);
  --border: hsl(240 6% 90%);
  --primary: hsl(262 57% 55%);
  --primary-foreground: #ffffff;
  --primary-soft: hsl(262 50% 95%);
  --ring: hsl(262 57% 55%);

  --shadow-soft: 0 8px 30px -12px hsl(262 57% 55% / 0.18);
  --shadow-card: 0 4px 20px -8px hsl(0 0% 0% / 0.08);

  --gradient-soft: radial-gradient(circle at 50% 30%, hsl(262 50% 95%) 0%, #ffffff 70%);
  --gradient-cta: linear-gradient(135deg, hsl(0 0% 96%) 0%, hsl(255 40% 95%) 40%, hsl(245 90% 88%) 80%, hsl(215 90% 90%) 100%);

  --transition: all .3s cubic-bezier(.4,0,.2,1);

  --container: 1280px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: "Roboto", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-weight: 600; letter-spacing: -.01em; text-wrap: balance; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
img { display: block; max-width: 100%; height: auto; }

.text-primary { color: var(--primary); }
.tnum { font-variant-numeric: tabular-nums; }

:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-radius: 4px; }

.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  padding: .625rem 1rem; background: var(--primary); color: var(--primary-foreground);
  border-radius: .5rem; font-weight: 500; transition: top .2s ease;
}
.skip-link:focus { top: 1rem; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(10px);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: .625rem; }
.logo img { height: 36px; width: auto; }
.site-nav { display: none; gap: 2rem; font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-foreground); }
.site-nav a { transition: var(--transition); }
.site-nav a:hover { color: var(--foreground); }
@media (min-width: 768px) { .site-nav { display: flex; } }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; background-image: var(--gradient-soft); }
.hero-inner { padding: 5rem 1.5rem; animation: heroPop 1.2s cubic-bezier(.4,0,.2,1) both; }
@media (min-width: 768px) { .hero-inner { padding: 7rem 1.5rem; } }
@keyframes heroPop {
  from { opacity: 0; transform: translateY(16px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.pill {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--primary-soft); color: var(--primary);
  padding: .375rem 1rem; border-radius: 999px;
  font-size: 12px; font-weight: 500;
}
.pill-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); animation: pulseSoft 2s ease-in-out infinite; }
@keyframes pulseSoft { 0%,100%{opacity:1;} 50%{opacity:.5;} }

.hero-title {
  margin-top: 1.5rem;
  font-size: clamp(1.75rem, 5.2vw, 4.5rem);
  line-height: 1.05; letter-spacing: -.02em; font-weight: 600;
}
.hero-title span { display: block; }
.hero-lead {
  margin-top: 2.5rem; max-width: 36rem;
  color: var(--muted-foreground);
  font-size: 1.125rem; line-height: 1.6;
}

/* ===== Metric strip ===== */
.metrics { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in oklab, var(--primary-soft) 40%, transparent); }
.metrics-grid {
  display: grid; gap: 2rem; padding: 3.5rem 1.5rem;
  grid-template-columns: repeat(1, 1fr);
}
@media (min-width: 640px) { .metrics-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .metrics-grid { grid-template-columns: repeat(4, 1fr); } .metric + .metric { border-left: 1px solid var(--border); padding-left: 2rem; } }
.metric-value { display: flex; align-items: baseline; font-size: 3.75rem; font-weight: 600; letter-spacing: -.02em; color: var(--primary); }
@media (min-width: 640px) { .metric-value { font-size: 3.75rem; } }
.metric-sup { margin-left: .25rem; font-size: 1.125rem; font-weight: 500; color: var(--muted-foreground); }
.metric-label { margin-top: .75rem; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-foreground); }
.metric-sub { margin-top: .5rem; font-size: .875rem; color: var(--muted-foreground); white-space: pre-line; }

/* ===== Section heads ===== */
.section-head { margin-bottom: 3rem; }
@media (min-width: 768px) { .section-head { margin-bottom: 4rem; } }
.section-title { font-size: 1.875rem; line-height: 1.15; }
@media (min-width: 640px) { .section-title { font-size: 2.25rem; } }
@media (min-width: 768px) { .section-title { font-size: 3rem; } }
.section-lead { margin-top: 1.25rem; max-width: 42rem; color: var(--muted-foreground); font-size: 1.125rem; line-height: 1.6; }

/* ===== Strategy ===== */
.strategy { padding: 5rem 0; }
@media (min-width: 768px) { .strategy { padding: 7rem 0; } }

.track-grid {
  display: grid; gap: 1.5rem;
  grid-template-columns: repeat(1, 1fr);
}
@media (min-width: 768px) { .track-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .track-grid { grid-template-columns: repeat(3, 1fr); gap: 2rem; } }

.track-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
@media (min-width: 640px) { .track-card { padding: 2rem; } }
.track-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
.track-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.track-icon { width: 48px; height: 48px; display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; background: var(--primary-soft); color: var(--primary); }
.track-icon svg { width: 24px; height: 24px; }
.track-num { font-size: 10px; font-weight: 500; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-foreground); }
.track-title { font-size: 1.25rem; font-weight: 600; }
@media (min-width: 640px) { .track-title { font-size: 1.5rem; } }
.track-desc { margin-top: .5rem; line-height: 1.6; color: var(--muted-foreground); }

.layers { margin-top: 2rem; display: flex; flex-direction: column; gap: .75rem; }
.layer-card { position: relative; background: var(--primary-soft); border-radius: .75rem; padding: 1.5rem; }
.layer-label { position: absolute; top: 1.5rem; right: 1.5rem; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .14em; color: var(--primary); }
.layer-title { padding-right: 5rem; font-size: 1.5rem; font-weight: 600; }
.layer-desc { margin-top: .5rem; color: var(--muted-foreground); }

/* ===== Gantt ===== */
.gantt-section { padding: 5rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in oklab, var(--primary-soft) 30%, transparent); }
@media (min-width: 768px) { .gantt-section { padding: 7rem 0; } }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; padding-bottom: 1.5rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.filter-chip {
  min-height: 40px; padding: .5rem 1rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--card); color: var(--muted-foreground);
  font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .14em;
  transition: var(--transition);
}
.filter-chip:hover { border-color: color-mix(in oklab, var(--primary) 40%, transparent); color: var(--foreground); }
.filter-chip.is-active { background: var(--primary); color: var(--primary-foreground); border-color: var(--primary); }
.filter-count { opacity: .6; font-variant-numeric: tabular-nums; }
.filter-chip.is-active .filter-count { opacity: .8; }

.gantt { background: var(--card); border: 1px solid var(--border); border-radius: 1rem; overflow: hidden; box-shadow: var(--shadow-card); }
.gantt-header { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--border); background: color-mix(in oklab, var(--muted) 40%, transparent); }
.gantt-quarter { padding: .75rem 1rem; text-align: center; }
.gantt-quarter.is-current { background: var(--primary-soft); }
.q-title { font-size: .875rem; font-weight: 600; color: var(--foreground); }
.q-sub { margin-top: .125rem; font-size: 11px; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-foreground); }

.gantt-body { padding: 1rem; display: flex; flex-direction: column; gap: .5rem; }
.gantt-row {
  position: relative;
  display: grid; grid-template-columns: repeat(3, 1fr);
  min-height: 72px;
  background: color-mix(in oklab, var(--muted) 30%, transparent);
  border-radius: .375rem;
}
.gantt-col-divider {
  border-right: 1px solid color-mix(in oklab, var(--border) 40%, transparent);
}
.gantt-row .gantt-col-divider:last-of-type { border-right: 0; }

.gantt-bar {
  position: absolute; top: 6px; bottom: 6px;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: .5rem .75rem; border-radius: .5rem;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  z-index: 1;
  overflow: hidden;
}
.gantt-bar:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.gantt-bar-top { display: flex; align-items: flex-start; justify-content: space-between; gap: .5rem; }
.gantt-bar-title {
  font-size: 13px; font-weight: 600; line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.gantt-bar-pct { font-size: 11px; font-weight: 600; font-variant-numeric: tabular-nums; flex-shrink: 0; }
.gantt-bar-bottom { display: flex; align-items: center; justify-content: space-between; font-size: 10px; text-transform: uppercase; letter-spacing: .14em; }
.gantt-bar-track { display: inline-block; width: 64px; height: 4px; border-radius: 999px; overflow: hidden; }
.gantt-bar-fill { display: block; height: 100%; }

/* ===== CTA ===== */
.cta { padding: 5rem 0; background-image: var(--gradient-cta); }
@media (min-width: 768px) { .cta { padding: 7rem 0; } }
.cta-inner { text-align: center; }
.cta-title { margin: 0 auto; max-width: 64rem; font-size: clamp(1.5rem, 3.4vw, 3rem); line-height: 1.15; font-weight: 600; }
.cta-lead { margin: 1.25rem auto 0; max-width: 36rem; color: var(--muted-foreground); font-size: 1.125rem; }
.cta-actions { margin-top: 2rem; display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; }

.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .75rem 1.5rem; border-radius: .5rem; font-size: .875rem; font-weight: 500; transition: var(--transition); }
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--primary); color: var(--primary-foreground); box-shadow: var(--shadow-soft); }
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost { background: var(--card); color: var(--foreground); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: color-mix(in oklab, var(--primary) 40%, transparent); }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--border); background: var(--background); }
.site-footer .container { padding-top: 3rem; padding-bottom: 3rem; }
.footer-grid { display: grid; gap: 2.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }
.footer-about { margin-top: 1rem; max-width: 20rem; font-size: .875rem; line-height: 1.6; color: var(--muted-foreground); }
.footer-title { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-foreground); }
.footer-list { margin-top: 1rem; display: flex; flex-direction: column; gap: .5rem; font-size: .875rem; }
.footer-list a { transition: color .2s ease; }
.footer-list a:hover { color: var(--primary); }
.footer-bottom { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border); display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: .75rem; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-foreground); }
@media (min-width: 640px) { .footer-bottom { flex-direction: row; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* === Gantt: interactive states (handled by gantt.js) === */
.gantt-row[hidden]{display:none}
.gantt-empty{padding:2.5rem 1rem;text-align:center;color:var(--muted-fg,#6b7280);font-size:.875rem}
.gantt-modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:1.5rem}
.gantt-modal[hidden]{display:none}
.gantt-modal__backdrop{position:absolute;inset:0;background:rgba(15,15,25,.55);backdrop-filter:blur(2px)}
.gantt-modal__panel{position:relative;max-width:640px;width:100%;max-height:85vh;overflow:auto;background:#fff;border-radius:14px;padding:2rem 2rem 2.25rem;box-shadow:0 25px 60px -20px rgba(0,0,0,.35)}
.gantt-modal__close{position:absolute;top:.5rem;right:.75rem;width:2rem;height:2rem;border:0;background:transparent;font-size:1.5rem;line-height:1;cursor:pointer;color:#6b7280;border-radius:8px}
.gantt-modal__close:hover{background:#f3f4f6;color:#111}
.gantt-modal__cat{font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;color:#6b7280;font-weight:600;margin-bottom:.5rem}
.gantt-modal__title{margin:0 0 1rem;font-size:1.35rem;font-weight:600;line-height:1.3}
.gantt-modal__desc{font-size:.95rem;line-height:1.55;color:#1f2937}
.gantt-modal__desc h4{margin:1.25rem 0 .5rem;font-size:1rem;font-weight:600}
.gantt-modal__desc p{margin:.6rem 0}
.gantt-modal__desc ul,.gantt-modal__desc ol{margin:.6rem 0;padding-left:1.25rem}
.gantt-modal__desc li{margin:.25rem 0}