/* h1d3mun3.studio — tokens and components. See docs/design/DESIGN.md */

:root {
  --graphite: #1C1C1C;
  --paper: #E8E6E1;
  --signal: #E8571A;
  --stone: #B9B5AC;

  --band: #DEDBD4;
  --card: #F3F1EC;
  --ink-2: #3A3936;
  --ink-3: #4A4844;
  --signal-text: #B8400C;
  --on-dark-2: #D6D3CC;
  --on-dark-border: #6B6964;
  --on-dark-rule: #3A3A38;

  --font-mono: 'IBM Plex Mono', monospace;
  --font-sans: 'IBM Plex Sans JP', sans-serif;
}

/* base */
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); }
a { color: var(--graphite); }
a:hover { color: var(--signal-text); }
a:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

.page {
  font-family: var(--font-sans);
  color: var(--graphite);
  background: var(--paper);
  line-height: 1.7;
  font-size: 16px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); }
.accent { color: var(--signal); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* links that keep their colour on hover */
.brand, .brand:hover, .site-nav a, .site-nav a:hover { color: var(--paper); }
.btn-primary, .btn-primary:hover { color: var(--graphite); }
.btn-secondary, .btn-secondary:hover { color: var(--paper); }
.link-row, .link-row:hover { color: var(--graphite); }

/* site-header */
.site-header { background: var(--graphite); color: var(--paper); }
.site-header .container { padding-block: 20px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-name { font-family: var(--font-mono); font-weight: 500; font-size: 17px; letter-spacing: -0.01em; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 24px; font-family: var(--font-mono); font-size: 14px; }
.site-nav a { text-decoration: none; padding: 10px 0; }

/* hero */
.hero { background: var(--graphite); color: var(--paper); border-top: 1px solid var(--on-dark-rule); }
.hero .container { padding-block: 96px 112px; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 64px; align-items: end; }
.hero-mark { display: flex; flex-direction: column; gap: 40px; }
.hero-title { margin: 0; font-family: var(--font-mono); font-weight: 500; font-size: clamp(40px, 7vw, 84px); line-height: 1.05; letter-spacing: -0.03em; }
.hero-body { display: flex; flex-direction: column; gap: 24px; max-width: 520px; }
.hero-body p { margin: 0; }
.hero-label { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--stone); }
.hero-catch { font-size: 26px; line-height: 1.5; font-weight: 500; }
.hero-lead { color: var(--on-dark-2); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 8px; }

.btn-primary, .btn-secondary { display: inline-flex; align-items: center; min-height: 48px; padding: 0 22px; text-decoration: none; font-family: var(--font-mono); font-size: 15px; border-radius: 6px; }
.btn-primary { background: var(--signal); font-weight: 500; }
.btn-secondary { border: 1px solid var(--on-dark-border); }

/* principles */
.principles { border-bottom: 1px solid var(--stone); }
.principles .container { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.principle { padding: 40px 32px; border-right: 1px solid var(--stone); display: flex; flex-direction: column; gap: 8px; }
.principle:first-of-type { padding-left: 0; }
.principle:last-child { padding-right: 0; border-right: 0; }
.principle-label { font-family: var(--font-mono); font-size: 13px; color: var(--signal-text); }
.principle strong { font-size: 19px; }
.principle-text { color: var(--ink-3); }

/* sections */
.section .container { padding-block: 96px; display: flex; flex-direction: column; }
.section-tools { background: var(--band); }
.section-tools .container { gap: 40px; }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px; border-bottom: 2px solid var(--graphite); padding-bottom: 16px; }
.section-title { margin: 0; font-family: var(--font-mono); font-weight: 500; font-size: 40px; letter-spacing: -0.02em; }
.section-sub { font-family: var(--font-mono); font-size: 14px; color: var(--ink-3); }

/* product-row */
.product-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: 24px 64px; padding: 56px 0; border-bottom: 1px solid var(--stone); }
.product-side { display: flex; flex-direction: column; gap: 14px; }
.product-main { display: flex; flex-direction: column; gap: 20px; }
.product-main p { margin: 0; }
.product-meta { font-family: var(--font-mono); font-size: 13px; color: var(--ink-3); }
.product-name { margin: 0; font-family: var(--font-mono); font-weight: 500; font-size: 56px; line-height: 1; letter-spacing: -0.03em; }
.product-catch { font-size: 20px; line-height: 1.6; font-weight: 500; }
.product-desc { color: var(--ink-2); }
.product-links { display: flex; flex-wrap: wrap; gap: 8px 24px; font-family: var(--font-mono); font-size: 14px; }
.product-links a { padding: 10px 0; }

/* status-tag */
.status-tag { align-self: flex-start; font-family: var(--font-mono); font-size: 12px; padding: 4px 10px; border-radius: 4px; }
.status-flagship { background: var(--graphite); color: var(--paper); }
.status-oss { border: 1px solid var(--graphite); }
.status-dev { background: var(--signal); color: var(--graphite); }
.status-planned { border: 1px dashed var(--graphite); }

/* tool-card */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 24px; }
.tool-card { background: var(--card); border: 1px solid var(--stone); border-radius: 10px; padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.tool-card p { margin: 0; color: var(--ink-2); }
.tool-label { font-family: var(--font-mono); font-size: 13px; color: var(--ink-3); }
.tool-name { margin: 0; font-family: var(--font-mono); font-weight: 500; font-size: 26px; }
.tool-link { font-family: var(--font-mono); font-size: 14px; margin-top: auto; padding-top: 8px; }

/* about */
.section-about { background: var(--signal); color: var(--graphite); }
.section-about .container { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 48px; align-items: end; }
.about-body { display: flex; flex-direction: column; gap: 24px; }
.about-body p { margin: 0; font-size: 20px; line-height: 1.6; font-weight: 500; }
.link-rows { display: flex; flex-direction: column; border-top: 2px solid var(--graphite); }
.link-row { display: flex; justify-content: space-between; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--graphite); text-decoration: none; font-family: var(--font-mono); font-size: 16px; }

/* footer */
.site-footer { background: var(--graphite); color: var(--stone); }
.site-footer .container { padding-block: 28px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-family: var(--font-mono); font-size: 13px; }
.site-footer .on-dark { color: var(--paper); }

/* language switch */
.site-nav .lang-switch { padding-left: 24px; border-left: 1px solid var(--on-dark-rule); }