/*
  Synapse: shared styles.
  Layout concept: a dark-first, app-like interface lit by the logo's cyan. Glow marks the one thing that matters on each page;
  everything else stays quiet. Mono labels carry metadata, the system font stack carries the rest (no web fonts to load).
  Theme pattern: tokens are defined on :root for dark (the default), then redefined for light by the manual toggle.
*/

:root {
  --bg: #060A13;
  --bg-2: #0A1120;
  --surface: #0D1626;
  --surface-2: #131F36;
  --fg: #E8F1FA;
  --muted: #9DB0C6;
  --line: #1B2A44;
  --line-strong: #5878A0;
  --accent: #35D6FF;
  --accent-hover: #7BE6FF;
  --accent-ink: #04121C;
  --accent-soft: #0E2A3B;
  --glow: #00D4FF;
  --glow-soft: rgba(0, 212, 255, 0.22);
  --glow-faint: rgba(0, 212, 255, 0.09);
  --bad: #FF8A97;
  --bad-soft: #3A1620;
  --warn: #FFC25C;
  --warn-soft: #382806;
  --ok: #62E3A4;
  --ok-soft: #0B3022;
  --shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.8);
  --sun-display: block;
  --moon-display: none;
  color-scheme: dark;
  --radius: 16px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

:root[data-theme="light"] {
  --bg: #F3F7FA;
  --bg-2: #E8EFF4;
  --surface: #FFFFFF;
  --surface-2: #EDF3F7;
  --fg: #0A1220;
  --muted: #43546A;
  --line: #D3DEE8;
  --line-strong: #7089A3;
  --accent: #006C93;
  --accent-hover: #00506E;
  --accent-ink: #FFFFFF;
  --accent-soft: #DDF2F9;
  --glow: #00C8F5;
  --glow-soft: rgba(0, 200, 245, 0.20);
  --glow-faint: rgba(0, 200, 245, 0.10);
  --bad: #B3202F;
  --bad-soft: #FBE7EA;
  --warn: #8A5200;
  --warn-soft: #FDF0D8;
  --ok: #0F6E44;
  --ok-soft: #DEF4E8;
  --shadow: 0 24px 60px -28px rgba(10, 30, 60, 0.35);
  --sun-display: none;
  --moon-display: block;
  color-scheme: light;
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-wrap: break-word;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font: 400 1rem/1.7 var(--font);
}

[hidden] { display: none !important; }

main { flex: 1 0 auto; }

h1, h2, h3 {
  margin: 0 0 0.6em;
  line-height: 1.12;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.3rem, 1.2rem + 4.6vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.55rem, 1rem + 1.8vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.015em; }

p { margin: 0 0 1em; max-width: 65ch; }
ul, ol { margin: 0 0 1em; padding-left: 1.25rem; }
li { margin-bottom: 0.35em; }

a { color: var(--accent); text-underline-offset: 0.2em; }
a:hover { color: var(--accent-hover); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.vh {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; color: var(--accent-ink); }

.wrap {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: max(16px, env(safe-area-inset-left, 0px)) max(16px, env(safe-area-inset-right, 0px));
}

.section { padding-block: 3rem; }
.section > :last-child { margin-bottom: 0; }
.section-head { max-width: 40rem; margin-bottom: 2rem; }
.section-head p { color: var(--muted); }
.section-head > :last-child { margin-bottom: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1rem;
  font: 600 0.78rem/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  border-radius: 2px;
  background: var(--glow);
  box-shadow: 0 0 10px var(--glow);
}

.lede { font-size: 1.15rem; color: var(--muted); max-width: 40rem; }

.icon { width: 1.4rem; height: 1.4rem; flex: none; }
.icon-tile {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top, 0px);
}

.header-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  min-height: 4.25rem;
}

.brand {
  order: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 44px;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--fg);
  text-decoration: none;
}
.brand:hover { color: var(--fg); }
.brand-mark { width: 34px; height: 34px; flex: none; filter: drop-shadow(0 0 8px var(--glow-soft)); }

.site-nav { order: 2; margin-left: auto; }
.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav li { margin: 0; }
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.4rem 0.7rem;
  border-radius: 10px;
  font-size: 0.88rem;
  color: var(--muted);
  text-decoration: none;
}
.site-nav a:hover { color: var(--fg); background: var(--surface-2); }
.site-nav a[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--glow);
}

.header-actions { order: 3; display: flex; gap: 0.5rem; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  padding: 0 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface);
  color: var(--fg);
  font: 600 0.9rem var(--font);
  cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

.icon-sun { display: var(--sun-display); }
.icon-moon { display: var(--moon-display); }

.menu-btn { display: none; }

@media (max-width: 58rem) {
  .js .menu-btn { display: inline-flex; }
  .header-actions { margin-left: auto; order: 2; }
  .site-nav { order: 3; flex-basis: 100%; margin-left: 0; }
  .js .site-nav { display: none; padding-bottom: 0.75rem; }
  .js .site-header.is-open .site-nav { display: block; }
  .site-nav ul { flex-direction: column; }
  .site-nav a { width: 100%; font-size: 1rem; }
}

/* ---------- Buttons, badges, pills, chips ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--accent);
  border-radius: 12px;
  font: 600 0.95rem/1.2 var(--font);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn .icon { width: 1.15rem; height: 1.15rem; }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 0 0 0 var(--glow-soft); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-ink); box-shadow: 0 8px 28px -6px var(--glow); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--accent); }
.btn-ghost:hover { background: var(--accent-soft); color: var(--accent-hover); }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  font: 600 0.75rem/1.3 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.badge::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--glow);
  box-shadow: 0 0 10px var(--glow);
}
.badge-plain::before { display: none; }

.pill {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font: 600 0.7rem/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}
.pill-progress { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.pill-done { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }

.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1em; padding: 0; list-style: none; }
.chips li { margin: 0; }
.chip {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--fg);
  font: 600 0.8rem/1.4 var(--mono);
}

/* urgency + status chips (the word is always shown, colour is a second cue) */
.urg, .st {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.15rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font: 600 0.7rem/1.5 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.urg::before { content: ""; width: 0.45rem; height: 0.45rem; border-radius: 50%; background: currentColor; }
.urg-over { color: var(--bad); background: var(--bad-soft); }
.urg-today { color: var(--warn); background: var(--warn-soft); }
.urg-soon { color: var(--accent); background: var(--accent-soft); }
.urg-ok { color: var(--ok); background: var(--ok-soft); }
.st { color: var(--muted); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(55% 75% at 80% 40%, var(--glow-soft), transparent 70%),
    radial-gradient(40% 55% at 0% 0%, var(--glow-faint), transparent 70%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(var(--line-strong) 1px, transparent 1.4px);
  background-size: 28px 28px;
  opacity: 0.35;
  -webkit-mask-image: radial-gradient(70% 90% at 70% 40%, #000, transparent 75%);
  mask-image: radial-gradient(70% 90% at 70% 40%, #000, transparent 75%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 2rem 3rem;
  align-items: center;
  padding-block: 4.5rem 4rem;
}
.hero-grid > * { min-width: 0; }
.hero h1 {
  margin-block: 1.4rem 1.1rem;
  font-size: clamp(3.2rem, 1.6rem + 8vw, 6rem);
  letter-spacing: -0.045em;
  line-height: 1;
}
.hero .lede { font-size: 1.25rem; margin-bottom: 1.25rem; color: var(--fg); opacity: 0.88; }
.hero-chips { margin-bottom: 1.25rem; }
.hero-chips .chip { display: inline-flex; align-items: center; gap: 0.45rem; }
.hero-chips .icon { width: 1rem; height: 1rem; color: var(--accent); }
.byline { margin: -1rem 0 2rem; font-size: 0.95rem; color: var(--muted); }
.byline a { color: var(--accent); }
.meta-line { margin: 0 0 2rem; font: 500 0.85rem/1.6 var(--mono); color: var(--muted); }

.hero-art { position: relative; display: grid; place-items: center; }
.hero-art::before {
  content: "";
  position: absolute;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow-soft), transparent 68%);
  animation: pulse 6s ease-in-out infinite;
}
.hero-art img {
  position: relative;
  width: min(100%, 27rem);
  height: auto;
  filter: drop-shadow(0 0 36px var(--glow-soft));
  animation: float 9s ease-in-out infinite;
}

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
@keyframes pulse { 0%, 100% { opacity: 0.55; transform: scale(0.94); } 50% { opacity: 1; transform: scale(1.04); } }
@keyframes flow { to { stroke-dashoffset: -28; } }

@media (max-width: 52rem) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); padding-block: 3rem 2.5rem; }
  .hero-art { order: -1; justify-self: start; }
  .hero-art img { width: 12rem; }
}

/* ---------- Page heads ---------- */

.page-head {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.page-head::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: radial-gradient(50% 120% at 88% 30%, var(--glow-soft), transparent 70%);
}
.page-head::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: url("../img/logo.png") no-repeat right 6% center / min(22rem, 52%);
  opacity: 0.16;
}
.page-head > .wrap { padding-block: 3.5rem 2.5rem; }
.page-head .lede { margin-bottom: 1.25rem; }
.page-head > .wrap > :last-child { margin-bottom: 0; }
@media (max-width: 40rem) { .page-head::after { opacity: 0.07; } }

.jump { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.jump li { margin: 0; }
.jump a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 75%, transparent);
  color: var(--fg);
  font: 600 0.8rem var(--mono);
  text-decoration: none;
}
.jump a:hover { border-color: var(--accent); color: var(--accent); }

.notice {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  margin-block: 1.5rem 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent-soft) 85%, transparent);
}
.notice .icon { margin-top: 0.15rem; color: var(--accent); }
.notice p { margin: 0; }

/* ---------- Cards and grids ---------- */

.grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.grid > * { min-width: 0; }

.card {
  position: relative;
  display: block;
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--fg);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card > :last-child { margin-bottom: 0; }
.card h2, .card h3 { margin-bottom: 0.5rem; }
.card h2 { font-size: 1.3rem; }
.card p, .card ul { color: var(--muted); }

a.card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 18px 40px -22px var(--glow); color: var(--fg); }
a.card .more { display: inline-block; margin-top: 0.4rem; color: var(--accent); font-weight: 600; font-size: 0.95rem; }
a.card:hover .more { text-decoration: underline; text-underline-offset: 0.2em; }

.card-wide { grid-column: 1 / -1; }

.tiles {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}
.tile { padding: 1.4rem 1.5rem; background: var(--surface); }
.tile .icon { margin-bottom: 0.8rem; color: var(--accent); }
.tile h3 { margin-bottom: 0.3rem; font-size: 1.05rem; }
.tile p { margin: 0; font-size: 0.92rem; color: var(--muted); }

/* ---------- Concept window ---------- */

.window {
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.window-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.dots { display: flex; gap: 0.4rem; }
.dots span { width: 0.7rem; height: 0.7rem; border-radius: 50%; background: var(--line-strong); opacity: 0.7; }
.window-title { flex: 1 1 10rem; margin: 0; font: 500 0.8rem var(--mono); color: var(--muted); }
.window-body { display: grid; grid-template-columns: 11rem minmax(0, 1fr); min-height: 22rem; }
.sidebar { padding: 1rem 0.75rem; border-right: 1px solid var(--line); background: var(--bg-2); }
.sidebar p { margin: 0 0 0.5rem 0.6rem; font: 600 0.68rem var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.sidebar ul { margin: 0; padding: 0; list-style: none; }
.sidebar li { margin: 0; padding: 0.45rem 0.6rem; border-radius: 8px; font-size: 0.85rem; color: var(--muted); }
.sidebar li[data-on] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.main-pane { min-width: 0; padding: 1.1rem 1.25rem 1.4rem; }
@media (max-width: 44rem) {
  .window-body { grid-template-columns: minmax(0, 1fr); }
  .sidebar { display: none; }
}

.seg { display: inline-flex; gap: 0.25rem; margin-bottom: 1rem; padding: 0.25rem; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-2); }
.seg button {
  min-height: 40px;
  padding: 0.3rem 0.9rem;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  font: 600 0.85rem var(--font);
  cursor: pointer;
}
.seg button:hover { color: var(--fg); }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.group + .group { margin-top: 1rem; }
.group-head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.45rem; }
.task {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  margin-bottom: 0.4rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
  font-size: 0.9rem;
}
.task-title { flex: 1 1 12rem; min-width: 0; }

.tl-scroll { overflow-x: auto; }
.tl { --tl-label: 8.5rem; min-width: 38rem; }
.tl-head, .tl-row { display: grid; grid-template-columns: var(--tl-label) repeat(7, minmax(0, 1fr)); align-items: center; }
.tl-head span { padding-bottom: 0.5rem; text-align: center; font: 600 0.7rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.tl-body { position: relative; border-top: 1px solid var(--line); }
.tl-body::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: var(--tl-label);
  right: 0;
  background: repeating-linear-gradient(90deg, var(--line) 0, var(--line) 1px, transparent 1px, transparent calc(100% / 7));
  pointer-events: none;
}
.tl-row { position: relative; min-height: 2.7rem; border-bottom: 1px solid var(--line); }
.tl-row:last-child { border-bottom: 0; }
.tl-name { padding-right: 0.5rem; font-size: 0.82rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tl-bar {
  position: relative;
  height: 1.7rem;
  padding: 0 0.6rem;
  border: 1px solid currentColor;
  border-radius: 8px;
  font: 600 0.68rem/1.55rem var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
}
.tl-bar.urg-over { background: var(--bad-soft); }
.tl-bar.urg-today { background: var(--warn-soft); }
.tl-bar.urg-soon { background: var(--accent-soft); }
.tl-bar.urg-ok { background: var(--ok-soft); }
.tl-bar::before { display: none; }

.caption { margin: 1rem 0 0; font: 500 0.82rem/1.6 var(--mono); color: var(--muted); max-width: none; }

/* ---------- Diagram ---------- */

.diagram {
  margin: 0;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.diagram svg { display: block; width: 100%; max-width: 36rem; height: auto; margin-inline: auto; }
.d-box { fill: var(--surface-2); stroke: var(--accent); stroke-opacity: 0.55; stroke-width: 1.5; }
.d-text { fill: var(--fg); font: 600 18px var(--font); }
.d-core-text { fill: var(--accent-ink); font: 700 18px var(--mono); }
.d-line { stroke: var(--accent); stroke-width: 2; fill: none; stroke-dasharray: 6 8; animation: flow 1.4s linear infinite; }
.d-dot { fill: var(--glow); }
.d-halo { fill: var(--glow); opacity: 0.22; }
.d-core { fill: var(--accent); }

.split {
  display: grid;
  gap: 2rem 3rem;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
}
.split > * { min-width: 0; }
@media (max-width: 52rem) { .split { grid-template-columns: minmax(0, 1fr); } }

.legend { display: grid; gap: 0.9rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.legend li { display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: 0.75rem; align-items: start; margin: 0; }
.legend .icon-tile { width: 2.5rem; height: 2.5rem; margin: 0; border-radius: 10px; }
.legend strong { display: block; font-size: 0.98rem; }
.legend span { font-size: 0.9rem; color: var(--muted); }

/* ---------- Plan bar ---------- */

.phasebar { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.phase-seg {
  display: block;
  flex: var(--w) 1 14rem;
  min-width: 0;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--line);
  border-top: 3px solid var(--glow);
  border-radius: 12px;
  background: var(--surface);
  color: var(--fg);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.phase-seg:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--fg); }
.phase-seg strong { display: block; font-size: 1.05rem; }
.phase-seg .when { display: block; margin: 0.15rem 0 0.5rem; font: 600 0.78rem var(--mono); color: var(--accent); }
.phase-seg .what { display: block; font-size: 0.9rem; color: var(--muted); }

/* ---------- CTA band ---------- */

.cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  padding: 2.25rem;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: var(--surface);
}
.cta::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(60% 140% at 100% 50%, var(--glow-soft), transparent 70%); }
.cta h2 { margin-bottom: 0.4rem; font-size: 1.6rem; }
.cta p { margin: 0; color: var(--muted); }

/* ---------- Goals ---------- */

.goal-grid { display: grid; gap: 1.25rem; margin: 0; padding: 0; list-style: none; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.goal-grid > li { margin: 0; }
@media (max-width: 52rem) { .goal-grid { grid-template-columns: minmax(0, 1fr); } }
.goal {
  height: 100%;
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.goal-final { grid-column: 1 / -1; border-color: var(--accent); background: linear-gradient(135deg, var(--accent-soft), var(--surface) 60%); }
.goal-num { display: block; margin-bottom: 0.9rem; font: 700 2.4rem/1 var(--mono); color: var(--accent); letter-spacing: -0.04em; text-shadow: 0 0 24px var(--glow-soft); }
.goal h2 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.goal p { color: var(--muted); }
.done {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  margin: 1rem 0 0;
  padding: 0.75rem 0.95rem;
  background: var(--accent-soft);
  border-radius: 10px;
  color: var(--fg) !important;
  font-size: 0.92rem;
}
.done .icon { width: 1.15rem; height: 1.15rem; margin-top: 0.2rem; color: var(--accent); }
.done strong { font-weight: 700; }

.not-goals {
  padding: 1.75rem;
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius);
}
.not-goals ul { margin-bottom: 0; list-style: none; padding: 0; display: grid; gap: 0.6rem; }
.not-goals li { display: flex; align-items: center; gap: 0.7rem; margin: 0; }
.not-goals .icon { color: var(--bad); width: 1.2rem; height: 1.2rem; }

/* ---------- How it works ---------- */

.mini-sug { margin-top: 1rem; padding: 0.9rem 1rem; border: 1px dashed var(--line-strong); border-radius: 12px; background: var(--bg-2); font-size: 0.9rem; }
.mini-sug p { margin: 0 0 0.6rem; color: var(--fg); }
.mini-sug .tag { display: block; margin-bottom: 0.3rem; font: 600 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.fake-btn { display: inline-block; margin-right: 0.4rem; padding: 0.2rem 0.7rem; border: 1px solid var(--line-strong); border-radius: 8px; font: 600 0.78rem var(--font); color: var(--fg); }
.fake-btn-on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.steps { position: relative; display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps::before { content: ""; position: absolute; left: 1.4rem; top: 1.5rem; bottom: 1.5rem; width: 2px; background: linear-gradient(var(--glow), var(--line)); }
.steps li {
  position: relative;
  display: grid;
  grid-template-columns: 2.8rem minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  margin: 0;
  padding: 1rem 1.25rem 1rem 0;
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  position: relative;
  display: grid;
  place-items: center;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
  color: var(--accent);
  font: 700 1rem var(--mono);
  box-shadow: 0 0 18px var(--glow-soft);
}
.steps p { margin: 0; color: var(--muted); }
.steps strong { color: var(--fg); display: block; font-size: 1.05rem; margin-bottom: 0.15rem; }

/* ---------- Roadmap ---------- */

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.filter-btn {
  min-height: 44px;
  padding: 0.4rem 1.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--fg);
  font: 600 0.9rem var(--font);
  cursor: pointer;
}
.filter-btn:hover { border-color: var(--accent); }
.filter-btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.filter-status { margin: 0.75rem 0 0; font: 500 0.85rem var(--mono); color: var(--muted); }

.rail { position: relative; padding-block: 2rem 1rem; }
.phase { position: relative; padding: 0 0 2.5rem 2.75rem; }
.phase::before { content: ""; position: absolute; left: 0.9rem; top: 0.5rem; bottom: -0.5rem; width: 2px; background: linear-gradient(var(--glow), var(--line)); }
.phase:last-child::before { bottom: 2.5rem; background: linear-gradient(var(--glow), transparent); }
.phase::after {
  content: "";
  position: absolute;
  left: 0.45rem;
  top: 0.45rem;
  width: 0.95rem;
  height: 0.95rem;
  border: 2px solid var(--glow);
  border-radius: 50%;
  background: var(--bg);
  box-shadow: 0 0 14px var(--glow);
}
.phase-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem 1rem; margin-bottom: 1.1rem; }
.phase-head h2 { margin: 0; }
.phase-dates { margin: 0; font: 600 0.85rem var(--mono); color: var(--accent); }
.phase-count { margin: 0; font: 500 0.8rem var(--mono); color: var(--muted); }

.rm-list {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr));
}
.rm-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 0.75rem;
  margin: 0;
  padding: 0.8rem 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}
.rm-item:hover { border-color: var(--line-strong); }
.rm-item > span:first-child { flex: 1 1 9rem; min-width: 0; }
.rm-desc { display: block; margin-top: 0.25rem; font-size: 0.82rem; line-height: 1.45; color: var(--muted); }

/* ---------- Stack ---------- */

.stack-strip { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0 0 2rem; padding: 0; list-style: none; }
.stack-strip li { margin: 0; }
.stack-strip .chip { padding: 0.5rem 0.95rem; font-size: 0.88rem; border-radius: 10px; }

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; text-align: left; }
caption { padding: 1rem 1.25rem 0; text-align: left; font-size: 0.9rem; color: var(--muted); }
th, td { padding: 1rem 1.25rem; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th {
  background: var(--surface-2);
  font: 600 0.75rem var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}
tbody th { font-weight: 600; white-space: nowrap; color: var(--accent); }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--accent-soft); }
td:nth-child(3) { color: var(--muted); }

@media (max-width: 42rem) {
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  table, tbody, tr, th, td { display: block; }
  tr { padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
  tbody tr:last-child { border-bottom: 0; }
  th, td { padding: 0.2rem 1.25rem; border-bottom: 0; }
  tbody th { white-space: normal; }
  td::before {
    content: attr(data-label);
    display: block;
    font: 600 0.7rem var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
  }
}

/* ---------- Learning log ---------- */

.entries { display: grid; gap: 1.5rem; }
.entry {
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.entry-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1rem; margin-bottom: 1.1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.entry-head h2 { margin: 0; font: 700 1.1rem var(--mono); letter-spacing: -0.01em; }
.entry-fields { display: grid; grid-template-columns: minmax(7rem, 11rem) minmax(0, 1fr); gap: 1rem 1.5rem; margin: 0; }
.entry-fields dt { font: 600 0.75rem/1.9 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }
.entry-fields dd { margin: 0; }
@media (max-width: 36rem) {
  .entry-fields { grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
  .entry-fields dd { margin-bottom: 0.85rem; }
}

/* ---------- About ---------- */

.profile { display: grid; gap: 2.5rem; grid-template-columns: minmax(0, 17rem) minmax(0, 1fr); align-items: start; }
.profile > * { min-width: 0; }
@media (max-width: 52rem) { .profile { grid-template-columns: minmax(0, 1fr); } }
.profile-card {
  position: sticky;
  top: 6rem;
  padding: 1.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}
@media (max-width: 52rem) { .profile-card { position: static; } }
.avatar { display: grid; place-items: center; width: 7.5rem; height: 7.5rem; margin: 0 auto 1.1rem; border: 1px solid var(--line-strong); border-radius: 50%; background: radial-gradient(circle, var(--glow-soft), transparent 70%), var(--bg-2); }
.avatar img { width: 78%; height: auto; }
.profile-card h2 { margin-bottom: 0.3rem; font-size: 1.3rem; }
.profile-card p { margin: 0 auto 0.4rem; font-size: 0.92rem; color: var(--muted); }
.profile-card .role { color: var(--accent); font: 600 0.78rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }
.profile-main > section + section { margin-top: 2.5rem; }
.profile-main h2 { font-size: 1.5rem; }

/* ---------- Footer ---------- */

.site-footer {
  position: relative;
  margin-top: 3rem;
  padding-block: 3rem calc(2rem + env(safe-area-inset-bottom, 0px));
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
}
@media (max-width: 44rem) { .footer-grid { grid-template-columns: minmax(0, 1fr); } }
.footer-brand { display: flex; align-items: center; gap: 0.7rem; margin: 0 0 0.6rem; font-weight: 700; font-size: 1.3rem; letter-spacing: -0.03em; }
.footer-brand img { width: 40px; height: 40px; filter: drop-shadow(0 0 10px var(--glow-soft)); }
.footer-tag { margin: 0; font: 500 0.85rem/1.6 var(--mono); color: var(--muted); }
.footer-h { margin: 0 0 0.6rem; font: 600 0.75rem var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.site-footer li { margin: 0; }
.site-footer li a { display: inline-block; padding-block: 0.3rem; color: var(--fg); text-decoration: none; }
.site-footer li a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 0.2em; }

/* ---------- Touch devices: no sticky hover states ---------- */

@media (hover: none) {
  a.card:hover, .btn-primary:hover, .phase-seg:hover { transform: none; }
  a.card:active, .phase-seg:active { border-color: var(--accent); }
  .btn:active { transform: scale(0.98); }
  tbody tr:hover { background: transparent; }
}

/* ---------- Phones (iPhone and similar) ---------- */

@media (max-width: 40rem) {
  body { font-size: 1rem; line-height: 1.65; }
  .section { padding-block: 2.25rem; }
  .section-head { margin-bottom: 1.4rem; }
  .lede { font-size: 1.05rem; }

  /* header: brand left, two compact actions right, menu opens as a card */
  .header-row { min-height: 3.75rem; gap: 0.25rem 0.6rem; }
  .brand { font-size: 1.1rem; }
  .brand-mark { width: 30px; height: 30px; }
  .menu-label { font-size: 0.85rem; }
  .js .site-nav { margin: 0.25rem 0 0.9rem; padding: 0.4rem; border: 1px solid var(--line-strong); border-radius: 16px; background: var(--surface); box-shadow: var(--shadow); }
  .site-nav a { min-height: 48px; padding-inline: 0.9rem; font-size: 1.02rem; }
  .site-nav li + li { border-top: 1px solid var(--line); }

  /* hero: logo as a quiet mark, full-width actions */
  .hero-grid { padding-block: 2rem 2.25rem; gap: 1.25rem; }
  .hero-art { justify-self: center; }
  .hero-art img { width: 9.5rem; }
  .hero-copy { text-align: left; }
  .hero h1 { margin-block: 1rem 0.8rem; font-size: clamp(2.8rem, 15vw, 3.6rem); }
  .hero .lede { font-size: 1.1rem; }
  .meta-line { font-size: 0.78rem; margin-bottom: 1.25rem; }
  .byline { margin: 0 0 1.5rem; font-size: 0.92rem; }
  .btn-row { flex-direction: column; }
  .btn-row .btn { width: 100%; }
  .chip { font-size: 0.78rem; }

  .page-head > .wrap { padding-block: 2.25rem 1.75rem; }
  .jump { flex-wrap: nowrap; overflow-x: auto; margin-inline: -16px; padding: 0.15rem 16px 0.4rem; scroll-snap-type: x proximity; scrollbar-width: none; }
  .jump::-webkit-scrollbar { display: none; }
  .jump li { flex: none; scroll-snap-align: start; }

  /* cards and tiles */
  .card, .goal, .entry, .not-goals { padding: 1.25rem; }
  .grid, .goal-grid, .entries { gap: 0.9rem; }
  .tile { padding: 1.15rem 1.25rem; }
  .goal-num { font-size: 2rem; }
  .notice { padding: 0.9rem 1rem; }

  /* concept window */
  .window { border-radius: 16px; }
  .window-bar { padding: 0.65rem 0.85rem; }
  .window-title { flex-basis: 100%; order: 3; }
  .main-pane { padding: 0.9rem; }
  .window-body { min-height: 0; }
  .seg { display: flex; }
  .seg button { flex: 1; min-height: 44px; }
  .task { padding: 0.65rem 0.8rem; }
  .task-title { flex-basis: 100%; font-weight: 600; }
  .tl-scroll { margin-inline: -0.9rem; padding-inline: 0.9rem; -webkit-overflow-scrolling: touch; }
  .tl { --tl-label: 7rem; min-width: 33rem; }

  .diagram { padding: 1rem; }
  .legend li { gap: 0.65rem; }

  /* plan, rail, steps */
  .phasebar { flex-direction: column; }
  .phase-seg { flex: none; }
  .rail { padding-block: 1.25rem 0.5rem; }
  .phase { padding-left: 2.25rem; padding-bottom: 2rem; }
  .phase::before { left: 0.65rem; }
  .phase::after { left: 0.2rem; }
  .rm-item { padding: 0.8rem 0.9rem; }
  .steps::before { left: 1.15rem; }
  .steps li { grid-template-columns: 2.4rem minmax(0, 1fr); gap: 0.8rem; padding-right: 0; }
  .steps li::before { width: 2.4rem; height: 2.4rem; font-size: 0.9rem; }

  .filters { flex-wrap: nowrap; overflow-x: auto; margin-inline: -16px; padding: 0.15rem 16px 0.4rem; scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .filter-btn { flex: none; }

  .stack-strip { gap: 0.45rem; margin-bottom: 1.5rem; }

  /* stacked table reads as cards */
  .table-wrap { background: transparent; border: 0; box-shadow: none; overflow: visible; }
  table, caption { background: transparent; }
  caption { padding: 0 0 0.75rem; }
  tbody tr { margin-bottom: 0.8rem; padding: 0.9rem 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
  tbody tr:last-child { margin-bottom: 0; border-bottom: 1px solid var(--line); }

  .entry-head { margin-bottom: 0.9rem; padding-bottom: 0.8rem; }

  .profile { gap: 1.5rem; }
  .profile-card { padding: 1.4rem; }
  .avatar { width: 6rem; height: 6rem; }

  .cta { padding: 1.5rem; border-radius: 18px; }
  .cta h2 { font-size: 1.4rem; }
  .cta .btn-row { width: 100%; }

  /* footer: pages and links sit side by side */
  .site-footer { margin-top: 2rem; padding-top: 2.25rem; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem 1rem; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
  .site-footer li a { padding-block: 0.45rem; font-size: 0.95rem; }
}

/* small iPhones (SE, mini) */
@media (max-width: 23.5rem) {
  .wrap { padding-inline: max(14px, env(safe-area-inset-left, 0px)) max(14px, env(safe-area-inset-right, 0px)); }
  .menu-label { display: none; }
  .eyebrow { letter-spacing: 0.1em; }
  .hero-art img { width: 8rem; }
}

/* landscape phones: keep the hero short */
@media (max-height: 30rem) and (orientation: landscape) {
  .hero-grid { padding-block: 1.5rem; }
  .hero-art img { width: 7rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-art::before, .hero-art img, .d-line { animation: none; }
  .btn, .card, .phase-seg { transition: none; }
  a.card:hover, .btn-primary:hover, .phase-seg:hover { transform: none; }
}

/* ---------- Small additions ---------- */
.goal-final-li { grid-column: 1 / -1; }
.rules { list-style: none; margin: 0; padding: 0; }
.rules li { margin: 0; }
.profile-card .name { margin: 0 0 0.3rem; font-size: 1.3rem; font-weight: 700; letter-spacing: -0.02em; color: var(--fg); }

/* ---------- Homepage additions ---------- */
.tagline { margin: 0 0 1.1rem; font-size: clamp(1.25rem, 1rem + 1.2vw, 1.7rem); font-weight: 600; line-height: 1.35; letter-spacing: -0.02em; color: var(--accent); }
.hero h1 { margin-block: 1.2rem 0.8rem; }
.hero .meta-line { margin: 1.5rem 0 0; }
.footer-copy { margin: 0.5rem 0 0; font-size: 0.85rem; color: var(--muted); }
.more-link { margin: 1.5rem 0 0; font-weight: 600; }
.grid-4 { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 36rem) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 66rem) { .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.concept-flag { padding: 0.6rem 0.9rem; border: 1px dashed var(--accent); border-radius: 10px; color: var(--fg) !important; font-size: 0.95rem; }

.hero-net { position: relative; display: block; width: min(100%, 26rem); height: auto; }
.net-lines path { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-opacity: 0.45; }
.net-halo { fill: var(--glow); opacity: 0.18; animation: pulse 6s ease-in-out infinite; transform-origin: 200px 180px; }
.net-core { fill: var(--accent); }
.net-nodes circle { fill: var(--surface-2); stroke: var(--accent); stroke-width: 2; }
@media (max-width: 52rem) { .hero-net { width: 12rem; } }

.graph-art { display: block; width: 100%; max-width: 32rem; height: auto; margin-inline: auto; }
.g-lines path { fill: none; stroke: var(--line-strong); stroke-width: 1.5; }
.g-project { fill: var(--accent); }
.g-task { fill: var(--surface-2); stroke: var(--accent); stroke-width: 1.5; }
.g-note { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.5; }
.g-text { fill: var(--fg); font: 600 13px var(--font); }
.g-project + .g-text { fill: var(--accent-ink); }

.stack-list { display: grid; gap: 0.6rem; margin: 0; padding: 0; list-style: none; grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr)); }
.stack-list li { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; margin: 0; padding: 0.8rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; font-size: 0.95rem; }
.stack-list small { display: block; color: var(--muted); font-size: 0.8rem; }

ol.rm-list { margin-bottom: 1.5rem; }
.rm-group { margin: 1.75rem 0 0.75rem; font: 600 0.8rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.rm-num { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  .net-halo { animation: none; }
}

.site-footer a, .cta p a { overflow-wrap: anywhere; }