/* Tokens: see designs.md §3 */
:root {
  --paper: #F3F5F1;
  --surface: #FFFFFF;
  --ink: #1B2026;
  --muted: #646D78;
  --line: #DCE0DA;
  --accent: #2B44C9;
  --accent-ink: #FFFFFF;
  --h0: #E4E7E1; --h1: #C6CEF1; --h2: #8B9BE5; --h3: #5066D5; --h4: #2B44C9;
  --ok: #1F7A4D;
  --warn: #A3401F;
  --c-note: #4A63E0; --c-cards: #C99A2E; --c-qs: #2F9461; --c-idea: #8C96A3;
  --font-display: "Source Code Pro", ui-monospace, monospace;
  --font-body: "Source Code Pro", ui-monospace, monospace;
  --size: 16px;
  --lh: 1.6;
  --side-w: 288px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14171B; --surface: #1C2026; --ink: #E8EBEE; --muted: #97A0AB;
    --line: #2E333B; --accent: #8C9DFF; --accent-ink: #14171B;
    --h0: #22262D; --h1: #283270; --h2: #3B4DB3; --h3: #6175E6; --h4: #A0ADFF;
    --ok: #6FD3A0; --warn: #F0A07F;
    --c-note: #8C9DFF; --c-cards: #E6BC5C; --c-qs: #5FC98F; --c-idea: #8C96A3;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #14171B; --surface: #1C2026; --ink: #E8EBEE; --muted: #97A0AB;
  --line: #2E333B; --accent: #8C9DFF; --accent-ink: #14171B;
  --h0: #22262D; --h1: #283270; --h2: #3B4DB3; --h3: #6175E6; --h4: #A0ADFF;
  --ok: #6FD3A0; --warn: #F0A07F;
  --c-note: #8C9DFF; --c-cards: #E6BC5C; --c-qs: #5FC98F; --c-idea: #8C96A3;
  color-scheme: dark;
}

/* Coffee mode wins over every theme */
:root.coffee, :root.coffee[data-theme] {
  --paper: #F1E6D8; --surface: #F8F0E6; --ink: #3A281D; --muted: #7A6251;
  --line: #E0CFBB; --accent: #8A5636; --accent-ink: #FFF8F0;
  --h0: #E6D8C5; --h1: #D7BB98; --h2: #BD9269; --h3: #9A6843; --h4: #6B4127;
  --ok: #4F6B2E; --warn: #9C3D1E;
  --c-note: #8A5636; --c-cards: #C08A2E; --c-qs: #5E7D3A; --c-idea: #A08B7A;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { font-size: var(--size); }

body {
  margin: 0;
  background: var(--page-bg, var(--paper));
  background-size: cover;
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-body);
  line-height: var(--lh);
  transition: background-color .6s ease, color .6s ease;
}
:root.coffee body { background: var(--paper); }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.03em; }
h1 { font-size: 1.9rem; font-weight: 700; }
h2 { font-size: 1.15rem; font-weight: 650; }
h3 { font-size: 1rem; font-weight: 650; }
p { margin: 0 0 .75em; max-width: 70ch; }
a { color: var(--accent); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button, input, select, textarea {
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .45rem .7rem;
}
button { cursor: pointer; }
button:hover { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.quiet { background: transparent; border-color: transparent; color: var(--muted); }
button.quiet:hover { color: var(--ink); }
button[data-armed] { color: var(--warn); border-color: var(--warn); }
textarea { width: 100%; resize: vertical; }

.muted { color: var(--muted); }
.small { font-size: .82rem; }
.px { image-rendering: pixelated; flex: none; vertical-align: -3px; color: var(--ink); }
.pixel-img { image-rendering: pixelated; }

/* ---------- shell ---------- */

.app { display: grid; grid-template-columns: var(--side-w) minmax(0, 1fr); min-height: 100vh; transition: grid-template-columns .25s ease; }
:root.side-closed .app { grid-template-columns: 0 minmax(0, 1fr); }

.sidebar {
  position: sticky; top: 0; height: 100vh; overflow-y: auto; overflow-x: hidden;
  padding: 16px 14px 24px;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(6px);
  display: flex; flex-direction: column; gap: 18px;
  font-size: .9rem;
  transition: transform .25s ease, background-color .6s ease;
}
:root.side-closed .sidebar { transform: translateX(-100%); visibility: hidden; }

.side-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.wordmark { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; letter-spacing: -0.05em; color: inherit; text-decoration: none; }

.icon-btn { display: inline-flex; align-items: center; gap: 6px; padding: .35rem .6rem; background: transparent; }

.session { border: 1px solid var(--accent); border-radius: 12px; padding: 10px 12px; display: grid; gap: 2px; background: color-mix(in srgb, var(--accent) 6%, var(--surface)); }
.session.idle { border-color: var(--line); background: transparent; }
.session-top { display: flex; align-items: center; gap: 8px; }
.session-time { margin-left: auto; font-variant-numeric: tabular-nums; color: var(--accent); font-weight: 600; }
.session a { text-decoration: none; }
.session button { justify-self: start; padding: 0; }

.side-nav { display: grid; gap: 1px; }
.side-nav a, .tree a {
  display: flex; align-items: center; gap: 8px; padding: .28rem .5rem; border-radius: 8px;
  color: var(--ink); text-decoration: none; min-width: 0;
}
.tree a span.label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-nav a:hover, .tree a:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.side-nav a[aria-current="page"], .tree a[aria-current="page"] { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }

.side-group h2 { font-size: .8rem; color: var(--muted); font-weight: 600; letter-spacing: 0; margin-bottom: .3rem; display: flex; justify-content: space-between; align-items: center; }
.side-group h2 button { padding: 0 .4rem; font-size: .8rem; }
.tree { list-style: none; margin: 0; padding: 0; }
.folder-row { display: flex; align-items: center; }
.folder-row a { flex: 1; }
.caret { padding: 2px; width: 22px; height: 22px; border: none; background: transparent; color: var(--muted); display: grid; place-items: center; }
.caret svg { transition: transform .15s ease; }
.caret[aria-expanded="true"] svg { transform: rotate(90deg); }
.tree ul { list-style: none; margin: 0 0 4px 21px; padding: 0 0 0 6px; border-left: 1px solid var(--line); }
.tree ul a { font-size: .85rem; color: var(--muted); }
.count { color: var(--muted); font-size: .78rem; margin-left: auto; font-variant-numeric: tabular-nums; }
.px-key { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: .74rem; color: var(--muted); margin: 8px 0 0 4px; }
.px-key span { display: inline-flex; align-items: center; gap: 4px; }

.coffee-toggle { display: flex; align-items: center; gap: 8px; width: 100%; padding: .5rem .7rem; border-radius: 10px; }
.coffee-toggle .switch { margin-left: auto; }
.switch { width: 36px; height: 20px; border-radius: 99px; background: var(--h0); border: 1px solid var(--line); position: relative; flex: none; }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: 50%; background: var(--muted); transition: transform .2s; }
[aria-pressed="true"] > .switch { background: var(--accent); }
[aria-pressed="true"] > .switch::after { transform: translateX(16px); background: var(--accent-ink); }

.mini-map { display: block; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.mini-map svg { display: block; width: 100%; height: 150px; }

.timer-chip { display: block; text-decoration: none; color: var(--accent-ink); background: var(--accent); border-radius: 10px; padding: .45rem .7rem; font-variant-numeric: tabular-nums; }

.topbar { display: flex; align-items: center; gap: 12px; padding: 12px 24px; min-height: 56px; }
.top-session { flex: 1; display: flex; justify-content: center; font-size: .85rem; color: var(--muted); }
.top-session a { color: inherit; text-decoration: none; display: inline-flex; gap: 8px; align-items: center; border: 1px solid var(--line); border-radius: 99px; padding: .2rem .8rem; }
.top-session .session-time { margin-left: 0; }
#theme-btn { margin-left: auto; }

@media (min-width: 861px) {
  :root:not(.side-closed) #side-open { visibility: hidden; }
}

main { padding: 8px 32px 72px; outline: none; }
.page { width: min(1240px, 100%); margin: 0 auto; }
.page.narrow { width: min(920px, 100%); }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 24px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 8px 0; }
.row > input:not([type="number"]):not([type="color"]) { flex: 1; min-width: 0; }

/* ---------- dashboard ---------- */

.hero { text-align: center; padding: 24px 0 28px; }
.today { font-family: var(--font-display); font-size: clamp(1.7rem, 4.2vw, 3.1rem); font-weight: 700; line-height: 1.1; letter-spacing: -0.06em; margin: 0 auto .35em; max-width: 24ch; }
.today strong { color: var(--accent); font-weight: 800; }
.today-sub { font-size: 1rem; color: var(--muted); margin: 0 auto; }

.heat-wrap { overflow-x: auto; padding: 4px 2px; }
.heat { display: grid; grid-template-rows: repeat(7, 1fr); grid-auto-flow: column; grid-auto-columns: 1fr; gap: 3px; min-width: 640px; }
.heat i { aspect-ratio: 1; border-radius: 3px; background: var(--h0); }
.heat i[data-l="1"] { background: var(--h1); }
.heat i[data-l="2"] { background: var(--h2); }
.heat i[data-l="3"] { background: var(--h3); }
.heat i[data-l="4"] { background: var(--h4); }
.heat i.is-today { outline: 2px solid var(--ink); outline-offset: 1px; }
.legend { display: flex; gap: 3px; align-items: center; justify-content: flex-end; font-size: .78rem; color: var(--muted); margin-top: 8px; }
.legend i { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }

.goal-strip { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding: 14px 18px; border-radius: 14px; border: 1px solid var(--line); margin: 24px 0 32px; }
.goal-strip.good { border-color: var(--ok); color: var(--ok); }
.goal-strip.good strong { font-size: 1.1rem; }
.goal-strip.bad { border-color: var(--warn); }
.goal-strip.bad strong { color: var(--warn); }

.dash-grid { display: grid; grid-template-columns: minmax(0, 2.2fr) minmax(260px, 1fr); gap: 24px; align-items: start; }
.pickup { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.pickup a { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink); text-decoration: none; }
.pickup a:hover { border-color: var(--accent); }
.pickup .px { margin-top: 3px; }
.pickup span { display: grid; gap: 2px; min-width: 0; }
.pickup q { color: var(--muted); font-size: .8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- chat ---------- */

.chat { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.chat-log { min-height: 260px; max-height: 460px; overflow-y: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 72ch; white-space: pre-wrap; }
.msg.you { align-self: flex-end; background: color-mix(in srgb, var(--accent) 12%, transparent); padding: .5rem .8rem; border-radius: 12px 12px 2px 12px; }
.msg.tutor { align-self: flex-start; }
.msg pre { white-space: pre; background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow-x: auto; font-size: .8rem; }
.chat-empty { color: var(--muted); }
.msg.pending { color: var(--muted); animation: thinking 1.2s ease-in-out infinite; }
.msg.pending.streaming { color: var(--ink); animation: none; }
.msg.error { color: var(--warn); }
.msg .via { display: block; margin-top: 4px; font-size: .74rem; color: var(--muted); white-space: normal; }
.msg button[data-retry] { display: block; margin-top: 4px; padding-left: 0; }
@keyframes thinking { 50% { opacity: .45; } }
.chat-tools { display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--line); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px; }
.chip { font-size: .78rem; border: 1px solid var(--line); border-radius: 99px; padding: .15rem .6rem; background: var(--paper); }
button.chip { cursor: pointer; }
a.chip { color: var(--ink); text-decoration: none; display: inline-flex; gap: 4px; align-items: center; }
.chat-form { display: flex; gap: 8px; padding: 10px 14px 14px; }
.chat-form textarea { min-height: 46px; max-height: 160px; }
.resume { padding: 12px 20px; border-bottom: 1px solid var(--line); font-size: .88rem; color: var(--muted); }

/* ---------- folder ---------- */

.folder-head { display: flex; align-items: center; gap: 12px; margin: 8px 0 4px; }
.folder-name { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; letter-spacing: -0.05em; border: 1px solid transparent; background: transparent; padding: 0 4px; flex: 1; min-width: 0; }
.folder-name:hover { border-color: var(--line); }
.tabs { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line); margin: 12px 0 20px; }
.tabs a { display: inline-flex; align-items: center; gap: 6px; padding: .5rem .8rem; color: var(--muted); text-decoration: none; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

.notes-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 16px; }
.note-list { list-style: none; margin: 0; padding: 0; }
.note-list button { width: 100%; text-align: left; border-color: transparent; background: transparent; display: flex; gap: 8px; align-items: center; }
.note-list button[aria-current="true"] { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }
.note-title { font-family: var(--font-display); font-size: 1.15rem; font-weight: 650; width: 100%; border-color: transparent; padding-left: 0; background: transparent; }
.note-body { min-height: 300px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.flashcard { min-height: 140px; perspective: 800px; padding: 0; border: none; background: none; text-align: left; }
.flashcard .inner { position: relative; display: block; width: 100%; min-height: 140px; transition: transform .45s; transform-style: preserve-3d; }
.flashcard.flipped .inner { transform: rotateY(180deg); }
.flashcard .face { position: absolute; inset: 0; backface-visibility: hidden; border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: var(--surface); display: flex; flex-direction: column; justify-content: space-between; gap: 8px; }
.flashcard .back { transform: rotateY(180deg); border-color: var(--accent); }
.flashcard .hint { font-size: .74rem; color: var(--muted); display: flex; gap: 6px; align-items: center; }
.review { max-width: 560px; margin: 0 auto; text-align: center; }
.review .flashcard { width: 100%; min-height: 220px; font-size: 1.15rem; }
.review .flashcard .inner { min-height: 220px; }
.review .face { justify-content: center; align-items: center; text-align: center; }

.qpage { border-top: 1px solid var(--line); padding: 16px 0; display: grid; gap: 8px; }
.qpage:first-child { border-top: none; padding-top: 0; }
.qpage h3 { display: flex; gap: 8px; align-items: center; margin: 0; }
.verdict.good { color: var(--ok); }
.verdict.bad { color: var(--warn); }

/* ---------- map ---------- */

.graph-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 16px; align-items: start; }
.graph-wrap { padding: 0; overflow: hidden; position: relative; }
.graph-tools { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px; border-bottom: 1px solid var(--line); }
.graph-tools button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
#graph-svg { display: block; width: 100%; height: min(68vh, 640px); touch-action: none; cursor: grab; background-image: radial-gradient(var(--line) 1px, transparent 1px); background-size: 22px 22px; }
#graph-svg.panning { cursor: grabbing; }
#graph-svg.connecting { cursor: crosshair; }
.g-link { fill: none; stroke: var(--line); stroke-width: 2; }
.g-link.custom { stroke: var(--accent); stroke-dasharray: 6 5; }
.g-node { cursor: pointer; color: var(--ink); --node: var(--line); }
.g-node > rect { fill: var(--surface); stroke: var(--node); stroke-width: 2; }
.g-node text { fill: var(--ink); font-size: 13px; font-family: "Source Code Pro", ui-monospace, monospace; pointer-events: none; }
.g-node > g { pointer-events: none; }
.g-root { --node: var(--ink); }
.g-root > rect { fill: var(--ink); }
.g-root text { fill: var(--paper); font-weight: 700; }
.g-folder { --node: var(--accent); }
.g-folder text { font-weight: 650; }
.g-note { --node: var(--c-note); }
.g-cards { --node: var(--c-cards); }
.g-questions { --node: var(--c-qs); }
.g-idea { --node: var(--c-idea); }
.g-idea > rect { stroke-dasharray: 4 3; }
.g-node.tinted > rect { fill: color-mix(in srgb, var(--node) 16%, var(--surface)); }
.g-node.selected > rect { stroke-width: 3.5; filter: drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 45%, transparent)); }
.g-node.connect-from > rect { stroke-dasharray: 3 3; stroke-width: 3; }
.g-node:focus-visible { outline: none; }
.g-node:focus-visible > rect { stroke-width: 3.5; }
.mini-map .g-node > rect { fill: var(--node); stroke: none; }
.inspector { display: grid; gap: 12px; }
.inspector h3 { display: flex; gap: 8px; align-items: center; margin: 0; }
.swatches { display: flex; flex-wrap: wrap; gap: 8px; }
.swatch { width: 30px; height: 30px; border-radius: 50%; padding: 0; border: 2px solid var(--line); }
.swatch[aria-pressed="true"] { outline: 2px solid var(--ink); outline-offset: 2px; }
.link-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; font-size: .85rem; }
.link-list li { display: flex; justify-content: space-between; align-items: center; gap: 6px; }

/* ---------- timer ---------- */

.clock { font-family: var(--font-display); font-size: clamp(3.4rem, 11vw, 7rem); font-weight: 700; letter-spacing: -0.07em; font-variant-numeric: tabular-nums; line-height: 1; margin: 8px 0; }
.phase { font-size: 1rem; color: var(--muted); margin: 0; }
.presets { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.presets button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.bar { height: 6px; background: var(--h0); border-radius: 99px; overflow: hidden; margin: 12px 0; }
.bar span { display: block; height: 100%; background: var(--accent); }
label.field { display: grid; gap: 4px; font-size: .85rem; color: var(--muted); }
.timer-page { text-align: center; }
.timer-page .row { justify-content: center; }

/* ---------- goals ---------- */

.goal { display: grid; gap: 6px; padding: 14px 0; border-top: 1px solid var(--line); }
.goal:first-of-type { border-top: none; }
.week { display: flex; gap: 4px; }
.week i { width: 18px; height: 18px; border-radius: 4px; background: var(--h0); }
.week i.met { background: var(--accent); }

/* ---------- coffee ---------- */

.coffee-head { display: flex; align-items: center; gap: 16px; }
.coffee-head img { width: 72px; height: 96px; }
.coffee-steps { list-style: none; padding: 0; margin: 4px 0 20px; display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--muted); }
.coffee-steps li[aria-current="step"] { color: var(--ink); font-weight: 700; }
.coffee-steps li.done { text-decoration: line-through; }
.skim li { margin-bottom: 6px; }

/* ---------- settings ---------- */

.settings-grid { display: grid; gap: 18px; max-width: 560px; }
.check { display: flex; gap: 8px; align-items: center; }

/* ---------- account ---------- */

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan { margin-bottom: 0; }
.plan.current { border-color: var(--accent); border-width: 2px; }
.plan-price { font-family: var(--font-display); font-size: 1.4rem; font-weight: 750; letter-spacing: -0.04em; margin: 0 0 .5em; }
.plan ul { margin: 0; padding-left: 1.2em; display: grid; gap: 4px; }

/* ---------- mind-map ---------- */

.mm-layout { display: grid; grid-template-columns: minmax(220px, 300px) minmax(0, 1fr); gap: 16px; align-items: stretch; }
.mm-text { min-height: 380px; font-family: "Source Code Pro", ui-monospace, monospace; font-size: .85rem; line-height: 1.7; tab-size: 2; white-space: pre; overflow-x: auto; }
.mm-canvas { border: 1px solid var(--line); border-radius: 10px; overflow: auto; padding: 16px; min-height: 380px; background-image: radial-gradient(var(--line) 1px, transparent 1px); background-size: 22px 22px; }
.mm { display: block; }
.mm-link { fill: none; stroke-width: 2; opacity: .55; }
.mm-node rect { fill: var(--surface); stroke: var(--mm); stroke-width: 1.5; }
.mm-node text { fill: var(--ink); font-size: 13px; font-family: "Source Code Pro", ui-monospace, monospace; }
.mm-branch rect { fill: color-mix(in srgb, var(--mm) 16%, var(--surface)); stroke-width: 2; }
.mm-branch text { font-weight: 650; }
.mm-root rect { fill: var(--ink); stroke: var(--ink); }
.mm-root text { fill: var(--paper); font-weight: 700; }

/* ---------- sources + videos ---------- */

.dropzone { width: 100%; display: grid; justify-items: center; gap: 4px; padding: 28px 16px; border: 2px dashed var(--line); border-radius: 12px; background: var(--paper); text-align: center; }
.dropzone:hover, .dropzone.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--paper)); }
.src-list { list-style: none; margin: 0; padding: 0; }
.src { display: grid; grid-template-columns: auto minmax(0, 1fr) 170px 150px auto; gap: 12px; align-items: center; padding: 12px 0; border-top: 1px solid var(--line); }
.src:first-child { border-top: none; }
.src-main { display: grid; min-width: 0; }
.src-main strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.src select { width: 100%; }
.src-actions { display: flex; gap: 6px; }
.steps { margin: 0; padding-left: 1.4em; display: grid; gap: 6px; }
code { font-family: "Source Code Pro", ui-monospace, monospace; background: var(--paper); border: 1px solid var(--line); border-radius: 5px; padding: 0 .3em; font-size: .9em; }
pre code { background: none; border: none; padding: 0; }
.video { border-top: 1px solid var(--line); padding: 14px 0; }
.video:first-of-type { border-top: none; padding-top: 0; }
.video-head { display: flex; gap: 10px; align-items: center; }
.video-head div { display: grid; }
.video pre { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow-x: auto; font-size: .8rem; }

/* ---------- search ---------- */

.search { width: min(620px, calc(100vw - 32px)); margin: 12vh auto auto; padding: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); color: var(--ink); }
.search::backdrop { background: color-mix(in srgb, var(--ink) 35%, transparent); }
.search input { width: 100%; border: none; border-bottom: 1px solid var(--line); border-radius: 0; padding: 16px 18px; font-size: 1.05rem; background: transparent; }
.search input:focus-visible { outline: none; }
.search ul { list-style: none; margin: 0; padding: 6px; max-height: 50vh; overflow-y: auto; }
.search li a { display: flex; gap: 10px; align-items: center; padding: 8px 12px; border-radius: 8px; color: var(--ink); text-decoration: none; }
.search li a > span { display: grid; min-width: 0; }
.search li[aria-selected="true"] a, .search li a:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.search-empty { padding: 12px; }
.search-hint { margin: 0; padding: 8px 18px 12px; }

/* ---------- toast ---------- */

.toast {
  position: fixed; left: 50%; top: 68px; transform: translateX(-50%);
  background: var(--ink); color: var(--paper);
  padding: 14px 22px; border-radius: 14px; z-index: 60;
  font-family: var(--font-display); font-weight: 650; text-align: center;
  max-width: calc(100vw - 32px);
  display: flex; align-items: center; gap: 16px;
}
.toast img { width: 60px; height: 80px; image-rendering: pixelated; flex: none; }
.toast.shout { font-size: clamp(1.1rem, 3.4vw, 1.8rem); font-weight: 800; letter-spacing: -0.04em; animation: shout .7s cubic-bezier(.3,1.6,.5,1); background: var(--accent); color: var(--accent-ink); padding: 12px 26px 12px 14px; text-align: left; }
.toast.shout img { animation: hop .5s steps(2) 3 .2s; }
@keyframes shout {
  0% { transform: translateX(-50%) scale(.6) rotate(-4deg); opacity: 0; }
  60% { transform: translateX(-50%) scale(1.06) rotate(2deg); opacity: 1; }
  80% { transform: translateX(-50%) rotate(-1deg); }
  100% { transform: translateX(-50%) scale(1) rotate(0); }
}
@keyframes hop { 50% { transform: translateY(-6px); } }

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

@media (max-width: 1100px) {
  .dash-grid, .graph-layout { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .app, :root.side-closed .app { grid-template-columns: minmax(0, 1fr); }
  .sidebar, :root.side-closed .sidebar { position: fixed; inset: 0 auto 0 0; width: min(300px, 86vw); z-index: 40; transform: translateX(-100%); visibility: hidden; background: var(--paper); }
  .sidebar.open, :root.side-closed .sidebar.open { transform: none; visibility: visible; box-shadow: 0 0 0 100vmax color-mix(in srgb, var(--ink) 30%, transparent); }
  .topbar { padding: 10px 16px; position: sticky; top: 0; background: var(--paper); z-index: 30; border-bottom: 1px solid var(--line); }
  .icon-btn span { display: none; }
  main { padding: 8px 16px 48px; }
  .notes-layout, .mm-layout { grid-template-columns: 1fr; }
  .mm-text, .mm-canvas { min-height: 220px; }
  .src { grid-template-columns: auto minmax(0, 1fr); }
  .src .field, .src-actions { grid-column: 1 / -1; }
  .top-session { justify-content: flex-start; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}