/* ===========================================
   psytech.life - Design System
   Editorial × Minimal, Education-first
   =========================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400&family=Noto+Sans+JP:wght@300;400;500;600;700&family=Noto+Serif+JP:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Core Palette */
  --ink: #0e1a1f;
  --ink-soft: #1a2730;
  --ink-mute: #4a5b66;
  --ink-light: #7a8a93;
  --paper: #f6f3ec;
  --paper-warm: #efeae0;
  --paper-deep: #e6e0d2;
  --line: #d4cdbc;
  --line-soft: #e2dccd;

  /* Pillar Accents */
  --edu: #0F6E56;
  --edu-soft: #E1F5EE;
  --edu-accent: #5DCAA5;
  --edu-deep: #0a4d3c;
  --clinic: #b85c3a;
  --clinic-soft: #f5e8e0;
  --clinic-deep: #8a3f24;
  --community: #8a7e2e;
  --community-soft: #f0ebd2;
  --community-deep: #5e5418;

  /* Typography */
  --font-display: 'Fraunces', 'Noto Serif JP', serif;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Sizing */
  --max-w: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --section-y: clamp(80px, 12vh, 140px);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  font-feature-settings: "palt";
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.05 0 0 0 0 0.1 0 0 0 0 0.13 0 0 0 0.04 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 2;
}

.section { padding: var(--section-y) 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--ink);
}

em { font-style: italic; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: currentColor;
}

.lead {
  font-family: var(--font-serif);
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.9;
  color: var(--ink-soft);
}

a { color: inherit; text-decoration: none; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 243, 236, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.nav { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.brand .dot { width: 6px; height: 6px; background: var(--edu); border-radius: 50%; display: inline-block; margin-right: 4px; }
.brand-tag { font-family: var(--font-mono); font-size: 10px; color: var(--ink-mute); letter-spacing: 0.15em; text-transform: uppercase; margin-left: 6px; }
.nav-menu { display: flex; gap: 28px; align-items: center; list-style: none; }
.nav-menu a { font-size: 13px; font-weight: 500; color: var(--ink-soft); position: relative; padding: 6px 0; transition: color 0.2s; }
.nav-menu a:hover { color: var(--edu); }
.nav-menu a.active::after { content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 2px; background: var(--edu); }
.nav-cta { background: var(--ink); color: var(--paper); padding: 10px 18px; border-radius: 999px; font-size: 13px; font-weight: 500; transition: background 0.2s; }
.nav-cta:hover { background: var(--edu-deep); color: var(--paper); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 32px; height: 32px; flex-direction: column; justify-content: center; gap: 5px; }
.nav-toggle span { width: 22px; height: 1.5px; background: var(--ink); display: block; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px; border-radius: 999px; font-size: 14px; font-weight: 500; font-family: var(--font-sans); border: none; cursor: pointer; transition: all 0.25s ease; white-space: nowrap; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--edu-deep); transform: translateY(-1px); box-shadow: 0 8px 24px -8px rgba(14, 26, 31, 0.4); }
.btn-edu { background: var(--edu); color: var(--paper); }
.btn-edu:hover { background: var(--edu-deep); transform: translateY(-1px); }
.btn-clinic { background: var(--clinic); color: var(--paper); }
.btn-clinic:hover { background: var(--clinic-deep); transform: translateY(-1px); }
.btn-community { background: var(--community); color: var(--paper); }
.btn-community:hover { background: var(--community-deep); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--ink-soft); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-ghost-light { background: transparent; color: var(--paper); border: 1px solid rgba(246, 243, 236, 0.4); }
.btn-ghost-light:hover { background: var(--paper); color: var(--ink); }
.btn .arrow { font-family: var(--font-mono); }

/* Pillar cards */
.pillar-card { position: relative; padding: 36px 32px; border-radius: 4px; background: var(--paper-warm); border: 1px solid var(--line-soft); transition: all 0.3s ease; overflow: hidden; }
.pillar-card:hover { transform: translateY(-4px); border-color: var(--line); box-shadow: 0 24px 48px -16px rgba(14, 26, 31, 0.12); }
.pillar-card.is-edu { background: linear-gradient(180deg, var(--edu-soft) 0%, var(--paper-warm) 100%); }
.pillar-card.is-clinic { background: linear-gradient(180deg, var(--clinic-soft) 0%, var(--paper-warm) 100%); }
.pillar-card.is-community { background: linear-gradient(180deg, var(--community-soft) 0%, var(--paper-warm) 100%); }
.pillar-card .role-tag { display: inline-block; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; padding: 5px 10px; border-radius: 3px; margin-bottom: 20px; }
.pillar-card.is-edu .role-tag { background: var(--edu); color: var(--paper); }
.pillar-card.is-clinic .role-tag { background: var(--clinic); color: var(--paper); }
.pillar-card.is-community .role-tag { background: var(--community); color: var(--paper); }
.pillar-card h3 { font-size: clamp(22px, 2.2vw, 28px); font-weight: 500; margin-bottom: 14px; }
.pillar-card .pillar-en { font-family: var(--font-display); font-style: italic; color: var(--ink-mute); font-size: 14px; margin-bottom: 18px; display: block; }
.pillar-card .pillar-desc { color: var(--ink-soft); font-size: 14px; line-height: 1.85; margin-bottom: 22px; }
.pillar-card .pillar-features { list-style: none; margin-bottom: 24px; }
.pillar-card .pillar-features li { font-size: 13px; color: var(--ink-mute); padding: 8px 0; border-bottom: 1px dashed var(--line-soft); display: flex; align-items: flex-start; gap: 10px; line-height: 1.6; }
.pillar-card .pillar-features li::before { content: '→'; font-family: var(--font-mono); color: var(--ink-light); flex-shrink: 0; }
.pillar-card .pillar-cta { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; font-size: 14px; padding-bottom: 4px; border-bottom: 1px solid currentColor; transition: gap 0.2s; }
.pillar-card.is-edu .pillar-cta { color: var(--edu-deep); }
.pillar-card.is-clinic .pillar-cta { color: var(--clinic-deep); }
.pillar-card.is-community .pillar-cta { color: var(--community-deep); }
.pillar-card:hover .pillar-cta { gap: 14px; }

/* Footer */
.site-footer { background: var(--ink); color: var(--paper); padding: 80px 0 36px; margin-top: 0; position: relative; z-index: 2; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 60px; }
.footer-brand { font-family: var(--font-display); font-size: 24px; font-weight: 500; margin-bottom: 16px; }
.footer-tagline { font-family: var(--font-serif); color: rgba(246, 243, 236, 0.7); font-size: 14px; line-height: 1.9; max-width: 320px; }
.footer-col h5 { font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(246, 243, 236, 0.5); margin-bottom: 18px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(246, 243, 236, 0.85); font-size: 13px; transition: color 0.2s; }
.footer-col a:hover { color: var(--paper); }
.footer-legal { font-size: 11px; color: rgba(246, 243, 236, 0.5); padding-top: 20px; border-top: 1px solid rgba(246, 243, 236, 0.1); margin-top: 24px; line-height: 1.8; }
.footer-bottom { border-top: 1px solid rgba(246, 243, 236, 0.15); padding-top: 28px; display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: rgba(246, 243, 236, 0.5); font-family: var(--font-mono); }

/* Utility */
.divider { height: 1px; background: var(--line-soft); margin: 0; border: none; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { display: inline-block; font-family: var(--font-mono); font-size: 11px; padding: 5px 10px; background: var(--paper-deep); color: var(--ink-mute); border-radius: 3px; letter-spacing: 0.05em; }
.note { font-size: 12px; color: var(--ink-mute); line-height: 1.7; }

/* Animations */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; animation: fadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.reveal-1 { animation-delay: 0.1s; }
.reveal-2 { animation-delay: 0.25s; }
.reveal-3 { animation-delay: 0.4s; }
.reveal-4 { animation-delay: 0.55s; }
.reveal-5 { animation-delay: 0.7s; }

/* Breadcrumb */
.breadcrumb { font-family: var(--font-mono); font-size: 11px; color: var(--ink-mute); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 32px; }
.breadcrumb a:hover { color: var(--edu); }
.breadcrumb .sep { margin: 0 10px; color: var(--ink-light); }

/* Responsive */
@media (max-width: 900px) {
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .nav-menu.is-open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--paper); padding: 24px; border-bottom: 1px solid var(--line); gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
}