/* appnest - the family homepage. Same house style as Febra/Tensio/Doza/Mena;
   the chrome uses a calm neutral indigo so it doesn't compete with the four
   tool accents shown on the cards. */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #1c2430;
  --ink-soft: #5b6674;
  --ink-faint: #8d97a5;
  --accent: #4f5b93;        /* calm indigo (the nest) */
  --accent-ink: #ffffff;
  --accent-soft: #eaecf5;
  --line: #e3e7ec;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

/* the <symbol> defs SVG must take no space; it can't use an inline style
   (the CSP blocks inline styles), so position it from here */
.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
}

main { max-width: 860px; margin: 0 auto; padding: 0 20px 48px; }

/* ---------------- top bar ---------------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 860px;
  margin: 0 auto;
  padding: 18px 20px 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -.01em;
}
.brand-mark { display: block; }

.tagline { color: var(--ink-faint); font-size: .85rem; }

.topbar-controls { margin-left: auto; display: flex; gap: 8px; }

/* ---------------- buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 9px 16px;
  font: inherit;
  font-weight: 600;
  font-size: .92rem;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:active { transform: translateY(1px); }
.btn-ghost { background: var(--surface); border-color: var(--line); color: var(--ink-soft); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------------- unit toggle (theme / language) ---------------- */

.unit-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}
.unit-toggle button {
  border: none;
  background: var(--surface);
  color: var(--ink-faint);
  font: inherit;
  font-size: .72rem;
  font-weight: 700;
  line-height: 1;
  padding: 5px 9px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}
.unit-toggle button.on { background: var(--accent); color: var(--accent-ink); }
.unit-toggle button svg { display: block; }

/* ---------------- hero ---------------- */

.hero { text-align: center; padding: 44px 0 30px; }
.hero-logo {
  display: block;
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  color: var(--accent);
}
.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: -.02em;
  line-height: 1.2;
  margin: 0 0 16px;
}
.lede {
  max-width: 600px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* ---------------- tools grid ---------------- */

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 20px 0 40px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, box-shadow .15s, transform .06s;
}
.tool-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 6px rgba(16, 24, 40, .07), 0 10px 28px rgba(16, 24, 40, .09);
  transform: translateY(-2px);
}

.tool-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 14px;
}

.tool-name {
  margin: 0 0 6px;
  font-size: 1.2rem;
  letter-spacing: -.01em;
  color: var(--accent);
}
.tool-body { flex: 1; }
.tool-desc { margin: 0 0 10px; color: var(--ink-soft); font-size: .92rem; }
.tool-ttl { display: block; color: var(--ink-faint); font-size: .8rem; }

.tool-open {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 16px;
  font-weight: 600;
  font-size: .92rem;
  color: var(--accent);
}
.tool-card:hover .tool-open { gap: 8px; }
.tool-open svg { transition: transform .15s; }

/* per-card accents: each tool keeps its own identity hue (light values here,
   dark overrides in the dark block below) */
.card-febra  { --accent: #0f766e; --accent-soft: #e6f2f1; }
.card-tensio { --accent: #3b5f8f; --accent-soft: #e9eff7; }
.card-doza   { --accent: #2f7d4f; --accent-soft: #e7f2ec; }
.card-mena   { --accent: #a4506b; --accent-soft: #f6e8ee; }

/* ---------------- philosophy cards ---------------- */

.how {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 0 0 32px;
}
.how-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.how-card h3 { margin: 0 0 6px; font-size: 1rem; }
.how-card p { margin: 0; color: var(--ink-soft); font-size: .9rem; }

.fineprint { text-align: center; color: var(--ink-soft); font-size: .9rem; }
.disclaimer { color: var(--ink-faint); font-size: .82rem; margin: 0; }

/* ---------------- modal ---------------- */

dialog {
  border: none;
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(16, 24, 40, .25);
  padding: 22px;
  width: min(560px, calc(100vw - 40px));
  background: var(--surface);
  color: var(--ink);
}
dialog::backdrop { background: rgba(20, 28, 38, .45); }
.modal-head { display: flex; justify-content: space-between; align-items: center; }
.modal-head h2 { margin: 0; font-size: 1.1rem; }
.privacy-body { font-size: .88rem; color: var(--ink-soft); }
.privacy-body p { margin: 10px 0; }

/* ---------------- footer ---------------- */

.footer {
  text-align: center;
  color: var(--ink-faint);
  font-size: .78rem;
  padding: 18px 20px 26px;
}
.footer-links {
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: baseline;
  margin-top: 6px;
}
.footer-link {
  color: var(--ink-faint);
  text-decoration: none;
  border: none;
  border-bottom: 1px dotted transparent;
  background: none;
  font: inherit;
  padding: 0;
  cursor: pointer;
}
.footer-link:hover { color: var(--accent); border-bottom-color: currentColor; }

/* ---------------- responsive ---------------- */

@media (max-width: 720px) {
  .tagline { display: none; }
}

/* ---------------- dark mode ----------------
   Same architecture as the tools: every dark difference is a variable
   override. [data-theme] = the user's manual choice; absent = follow system. */

:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #10151b;
    --surface: #1a222b;
    --ink: #e7ecf2;
    --ink-soft: #a6b1be;
    --ink-faint: #75808d;
    --accent: #9199d6;
    --accent-ink: #0e1226;
    --accent-soft: #23283f;
    --line: #2b3542;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .35);
  }
  :root:not([data-theme]) .card-febra  { --accent: #2fbcab; --accent-soft: #143430; }
  :root:not([data-theme]) .card-tensio { --accent: #6297d8; --accent-soft: #16283d; }
  :root:not([data-theme]) .card-doza   { --accent: #58b581; --accent-soft: #143323; }
  :root:not([data-theme]) .card-mena   { --accent: #d98ca3; --accent-soft: #3a1f29; }
}

:root[data-theme="dark"] {
  --bg: #10151b;
  --surface: #1a222b;
  --ink: #e7ecf2;
  --ink-soft: #a6b1be;
  --ink-faint: #75808d;
  --accent: #9199d6;
  --accent-ink: #0e1226;
  --accent-soft: #23283f;
  --line: #2b3542;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .35);
}
:root[data-theme="dark"] .card-febra  { --accent: #2fbcab; --accent-soft: #143430; }
:root[data-theme="dark"] .card-tensio { --accent: #6297d8; --accent-soft: #16283d; }
:root[data-theme="dark"] .card-doza   { --accent: #58b581; --accent-soft: #143323; }
:root[data-theme="dark"] .card-mena   { --accent: #d98ca3; --accent-soft: #3a1f29; }