/* ---------- fonts (self-hosted, SIL Open Font License) ---------- */
@font-face { font-family: "Bricolage Grotesque"; src: url(fonts/bricolage-grotesque-latin-opsz-normal.woff2) format("woff2-variations"); font-weight: 200 800; font-display: swap; }
@font-face { font-family: "Atkinson Hyperlegible"; src: url(fonts/atkinson-hyperlegible-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Atkinson Hyperlegible"; src: url(fonts/atkinson-hyperlegible-latin-700-normal.woff2) format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Atkinson Hyperlegible"; src: url(fonts/atkinson-hyperlegible-latin-400-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }

/* ---------- tokens ---------- */
:root {
  --paper: #EEF1EC;
  --surface: #FFFFFF;
  --surface-2: #F6F8F4;
  --ink: #18212C;
  --muted: #5A6470;
  --rule: #D3D9CF;
  --cobalt: #2B49D1;
  --cobalt-ink: #FFFFFF;
  --cobalt-soft: #E3E8FB;
  --ok: #2B7553;
  --ok-soft: #DDEFE5;
  --tight: #855400;
  --tight-soft: #FBEBC9;
  --risk: #B1352D;
  --risk-soft: #F8DEDA;
  --cap-line: #18212C;
  --shadow: 0 1px 0 rgba(24, 33, 44, .06), 0 8px 24px -12px rgba(24, 33, 44, .18);
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --r-lg: 18px;
  --r-md: 12px;
  --r-sm: 8px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #12161B; --surface: #1A2027; --surface-2: #161B21; --ink: #E8ECEF; --muted: #9AA4AE;
    --rule: #2C343D; --cobalt: #7F97FF; --cobalt-ink: #0E1530; --cobalt-soft: #222B4D;
    --ok: #6CCB9C; --ok-soft: #173327; --tight: #F0B75A; --tight-soft: #3A2C10;
    --risk: #FF8A7E; --risk-soft: #3E1C19; --cap-line: #E8ECEF;
    --shadow: 0 1px 0 rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #12161B; --surface: #1A2027; --surface-2: #161B21; --ink: #E8ECEF; --muted: #9AA4AE;
  --rule: #2C343D; --cobalt: #7F97FF; --cobalt-ink: #0E1530; --cobalt-soft: #222B4D;
  --ok: #6CCB9C; --ok-soft: #173327; --tight: #F0B75A; --tight-soft: #3A2C10;
  --risk: #FF8A7E; --risk-soft: #3E1C19; --cap-line: #E8ECEF;
  --shadow: 0 1px 0 rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.6);
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 17px/1.55 var(--body); font-variant-numeric: tabular-nums;
}
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 1.2rem + 2.4vw, 2.9rem); font-weight: 800; }
h2 { font-size: 1.35rem; font-weight: 700; }
h3 { font-size: 1.05rem; font-weight: 700; }
p { margin: 0; }
a { color: var(--cobalt); }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 2px; border-radius: 6px; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: 232px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; padding: 22px 16px;
  display: flex; flex-direction: column; gap: 28px; border-right: 1px solid var(--rule);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none;
  font: 800 1.4rem/1 var(--display); padding: 4px 8px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav a {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--r-sm);
  color: var(--muted); text-decoration: none; font-weight: 700;
}
.nav a svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.nav a:hover { color: var(--ink); background: var(--surface-2); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--surface); box-shadow: var(--shadow); }
.nav a[aria-current="page"] svg { stroke: var(--cobalt); }
.mini-timer {
  margin-top: auto; border: 1px solid var(--rule); background: var(--surface); border-radius: var(--r-md);
  padding: 12px; text-align: left; cursor: pointer; display: grid; gap: 2px;
}
.mini-timer[hidden] { display: none; }
.mini-timer strong { font: 700 1.5rem/1 var(--display); }
.mini-timer span { font-size: .85rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.main { padding: 40px clamp(16px, 4vw, 56px) 96px; max-width: 1180px; width: 100%; min-width: 0; outline: none; }

@media (max-width: 820px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar {
    position: fixed; z-index: 20; top: auto; bottom: 0; left: 0; right: 0; height: auto;
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); flex-direction: row; gap: 0;
    border-right: 0; border-top: 1px solid var(--rule); background: var(--paper);
  }
  .brand, .mini-timer { display: none !important; }
  .nav { flex-direction: row; width: 100%; justify-content: space-around; }
  .nav a { flex-direction: column; gap: 2px; padding: 6px 4px; font-size: .72rem; flex: 1; text-align: center; }
  .nav a[aria-current="page"] { box-shadow: none; background: transparent; }
  .main { padding-top: 24px; padding-bottom: 120px; }
}

/* ---------- page header ---------- */
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.page-head p { color: var(--muted); margin-top: 6px; max-width: 60ch; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer;
  border: 1px solid transparent; border-radius: 999px; padding: 10px 18px; font-weight: 700; line-height: 1.2;
  text-decoration: none; transition: transform .08s ease, background-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--cobalt); color: var(--cobalt-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: var(--rule); color: var(--ink); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.danger { background: transparent; border-color: var(--risk); color: var(--risk); }
.btn.small { padding: 6px 12px; font-size: .9rem; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.icon-btn {
  border: 0; background: transparent; padding: 6px 8px; border-radius: var(--r-sm); cursor: pointer; color: var(--muted);
  font-size: .9rem; font-weight: 700; white-space: nowrap;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }

/* ---------- today hero ---------- */
.today-date { color: var(--muted); font-weight: 700; margin-bottom: 10px; }
.hero-sentence { font: 700 clamp(1.7rem, 1.1rem + 2.6vw, 3.1rem)/1.18 var(--display); letter-spacing: -0.02em; max-width: 24ch; }
.hero-sentence .task-ref {
  text-decoration: underline; text-decoration-thickness: .14em; text-underline-offset: .14em;
  text-decoration-color: var(--c, var(--cobalt));
}
.hero-sentence .amount { color: var(--c, var(--cobalt)); white-space: nowrap; }
.hero-sub { color: var(--muted); margin-top: 14px; font-size: 1.05rem; max-width: 62ch; }
.hero { margin-bottom: 36px; }

.grid-today { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 28px; align-items: start; }
@media (max-width: 1000px) { .grid-today { grid-template-columns: minmax(0, 1fr); } }

.panel { background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow); padding: 22px; }
.panel > h2 { margin-bottom: 14px; display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.panel > h2 small { font: 400 .9rem var(--body); color: var(--muted); }

/* ---------- alerts ---------- */
.alert { border-radius: var(--r-md); padding: 14px 16px; display: grid; gap: 4px; margin-bottom: 18px; border-left: 5px solid; }
.alert.risk { background: var(--risk-soft); border-color: var(--risk); }
.alert.tight { background: var(--tight-soft); border-color: var(--tight); }
.alert strong { font-weight: 700; }

/* ---------- blocks (today list) ---------- */
.blocks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.block {
  display: grid; grid-template-columns: 6px 1fr auto; gap: 14px; align-items: center;
  padding: 12px 12px 12px 0; border-radius: var(--r-md); background: var(--surface-2);
}
.block .bar { align-self: stretch; border-radius: 0 4px 4px 0; background: var(--c); }
.block .title { font-weight: 700; }
.block .meta { color: var(--muted); font-size: .92rem; }
.block .amount { font: 700 1.15rem/1 var(--display); text-align: right; }
.block .actions { display: flex; flex-wrap: wrap; gap: 2px 6px; justify-content: flex-end; margin-top: 8px; }
@media (max-width: 520px) {
  .block { grid-template-columns: 6px 1fr; }
  .block > div { grid-column: 2; grid-row: 1; }
  .block .bar { grid-column: 1; grid-row: 1; }
  .block .amount { grid-column: 2; grid-row: 1; justify-self: end; align-self: start; font-size: 1rem; }
  .block .title { padding-right: 70px; }
  .deadline { grid-template-columns: 1fr; }
  .deadline .status { justify-self: start; grid-row: 2; }
}

/* ---------- deadlines list ---------- */
.deadlines { list-style: none; margin: 0; padding: 0; }
.deadline { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 12px 0; border-top: 1px solid var(--rule); }
.deadline:first-child { border-top: 0; padding-top: 0; }
.deadline .title { font-weight: 700; }
.deadline .when { color: var(--muted); font-size: .92rem; }
.course-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--c); margin-right: 6px; vertical-align: 1px; }

.status {
  display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 10px;
  font-size: .82rem; font-weight: 700; white-space: nowrap; justify-self: end; align-self: start;
}
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.status.comfortable { color: var(--ok); background: var(--ok-soft); }
.status.tight { color: var(--tight); background: var(--tight-soft); }
.status.at-risk, .status.overdue { color: var(--risk); background: var(--risk-soft); }
.status.done { color: var(--muted); background: var(--surface-2); }

.progress { height: 6px; border-radius: 99px; background: var(--rule); overflow: hidden; grid-column: 1 / -1; }
.progress span { display: block; height: 100%; background: var(--c, var(--cobalt)); border-radius: 99px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; margin-top: 22px; }
.stat { background: var(--surface-2); border-radius: var(--r-md); padding: 12px 14px; }
.stat b { display: block; font: 700 1.25rem/1.15 var(--display); }
.stat span { font-size: .85rem; color: var(--muted); }

/* ---------- plan / load chart ---------- */
.load {
  --h: 220px; position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(44px, 1fr);
  gap: 8px; overflow-x: auto; padding: 12px 4px 4px; scroll-snap-type: x proximity;
}
.load-day { display: grid; grid-template-rows: var(--h) auto auto; gap: 6px; text-align: center; cursor: pointer;
  border: 0; background: transparent; padding: 0; scroll-snap-align: start; border-radius: var(--r-sm); }
.load-col { position: relative; display: flex; flex-direction: column-reverse; border-radius: 8px 8px 4px 4px;
  background: repeating-linear-gradient(-45deg, transparent 0 6px, var(--surface-2) 6px 12px); }
.load-col .seg { width: 100%; background: var(--c); border-top: 2px solid var(--surface); }
.load-col .seg:last-child { border-radius: 6px 6px 0 0; }
.load-col .seg:first-child { border-radius: 0 0 4px 4px; }
.load-col .seg:only-child { border-radius: 6px 6px 4px 4px; }
.load-col .cap { position: absolute; left: -3px; right: -3px; border-top: 2px dashed var(--cap-line); opacity: .55; }
.load-col.zero .cap { display: none; }
.load-day .dow { font-weight: 700; font-size: .85rem; }
.load-day .dnum { font-size: .8rem; color: var(--muted); }
.load-day.weekend .dow { color: var(--muted); }
.load-day.is-today .dow { color: var(--cobalt); }
.load-day:hover .load-col { outline: 2px solid var(--rule); }
.load-day .due-flag { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); width: 10px; height: 10px; border-radius: 50%; background: var(--c); border: 2px solid var(--surface); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 14px; font-size: .9rem; color: var(--muted); }
.legend .cap-key { display: inline-block; width: 22px; border-top: 2px dashed var(--cap-line); vertical-align: middle; margin-right: 6px; opacity: .55; }

.days { display: grid; gap: 12px; margin-top: 28px; }
.day-card { background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow); padding: 16px 18px; scroll-margin-top: 20px; }
.day-card header { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.day-card.highlight { outline: 3px solid var(--cobalt); }
.day-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.day-card li { display: flex; justify-content: space-between; gap: 10px; }
.day-card .empty-day { color: var(--muted); }
.fill-meter { font-size: .9rem; color: var(--muted); }

.segmented { display: inline-flex; border: 1px solid var(--rule); border-radius: 999px; padding: 3px; background: var(--surface); }
.segmented button { border: 0; background: transparent; padding: 7px 14px; border-radius: 999px; cursor: pointer; font-weight: 700; color: var(--muted); }
.segmented button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* ---------- assignments ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.cards { display: grid; gap: 12px; }
.a-card {
  background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow); padding: 16px 18px 16px 22px;
  display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; position: relative; overflow: hidden;
}
.a-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: var(--c); }
.a-card.is-done { opacity: .6; }
.a-card.is-done .title { text-decoration: line-through; }
.a-card .title { font: 700 1.15rem/1.25 var(--display); }
.a-card .sub { color: var(--muted); font-size: .95rem; }
.a-card .numbers { display: flex; gap: 18px; flex-wrap: wrap; font-size: .92rem; color: var(--muted); grid-column: 1 / -1; }
.a-card .numbers b { color: var(--ink); }
.a-card .notes { grid-column: 1 / -1; font-size: .92rem; color: var(--muted); font-style: italic; }
.a-card .card-actions { grid-column: 1 / -1; display: flex; gap: 4px; flex-wrap: wrap; margin-left: -8px; }

.empty { text-align: center; padding: 56px 20px; background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow); }
.empty h2 { margin-bottom: 8px; }
.empty p { color: var(--muted); max-width: 46ch; margin: 0 auto 20px; }
.empty .btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ---------- courses ---------- */
.course-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.course-list li { display: flex; align-items: center; gap: 10px; }
.course-list input[type="text"] { flex: 1; }
.swatches { display: flex; gap: 6px; }
.swatch { width: 24px; height: 24px; border-radius: 50%; border: 2px solid transparent; background: var(--c); cursor: pointer; padding: 0; }
.swatch[aria-pressed="true"] { border-color: var(--ink); box-shadow: 0 0 0 2px var(--surface) inset; }

/* ---------- focus ---------- */
.focus-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 340px); gap: 28px; align-items: start; }
@media (max-width: 900px) { .focus-wrap { grid-template-columns: minmax(0, 1fr); } }
.dial { display: grid; place-items: center; padding: 28px 0; }
.dial svg { width: min(340px, 78vw); height: auto; transform: rotate(-90deg); }
.dial .track { stroke: var(--rule); }
.dial .ring { stroke: var(--cobalt); transition: stroke-dashoffset .3s linear; }
.dial.break .ring { stroke: var(--ok); }
.dial-center { grid-area: 1 / 1; text-align: center; }
.dial-time { font: 800 clamp(3rem, 2rem + 4vw, 4.6rem)/1 var(--display); letter-spacing: -0.03em; }
.dial-phase { color: var(--muted); font-weight: 700; margin-top: 6px; }
.dial > svg { grid-area: 1 / 1; }
.focus-controls { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.focus-task { max-width: 420px; margin: 0 auto 8px; }
.session-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.session-list li { display: flex; justify-content: space-between; gap: 10px; font-size: .95rem; }
.pips { display: flex; gap: 6px; justify-content: center; margin-top: 14px; }
.pip { width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--cobalt); }
.pip.on { background: var(--cobalt); }

/* ---------- forms ---------- */
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field > span { font-weight: 700; font-size: .92rem; }
.field em { font-weight: 400; color: var(--muted); font-style: normal; }
input, select, textarea {
  width: 100%; border: 1px solid var(--rule); border-radius: var(--r-sm); padding: 10px 12px; background: var(--surface-2);
}
input:focus, select:focus, textarea:focus { border-color: var(--cobalt); outline: 2px solid var(--cobalt-soft); outline-offset: 0; }
input[aria-invalid="true"] { border-color: var(--risk); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .row2 { grid-template-columns: 1fr; } }
.form-error { color: var(--risk); font-weight: 700; margin-bottom: 10px; }
.week-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
.week-grid label { display: grid; gap: 4px; text-align: center; font-weight: 700; font-size: .85rem; }
.week-grid input { text-align: center; padding: 10px 4px; }
@media (max-width: 560px) { .week-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.settings-grid { display: grid; gap: 20px; max-width: 760px; }
.settings-grid .panel p.muted { margin-bottom: 14px; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- dialog ---------- */
dialog.sheet {
  border: 0; border-radius: var(--r-lg); padding: 26px; width: min(560px, calc(100vw - 24px)); background: var(--surface);
  color: var(--ink); box-shadow: 0 30px 80px -20px rgba(0,0,0,.45);
}
dialog.sheet.small { width: min(400px, calc(100vw - 24px)); }
dialog.sheet h2 { margin-bottom: 18px; }
dialog::backdrop { background: rgba(18, 22, 27, .45); }
dialog[open] { animation: rise .18s ease-out; }
@keyframes rise { from { transform: translateY(10px); opacity: 0; } }
.sheet-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 16px; }
.chip { border: 1px solid var(--rule); background: var(--surface-2); border-radius: 999px; padding: 6px 12px; cursor: pointer; font-weight: 700; }
.chip:hover { border-color: var(--cobalt); }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--ink); color: var(--paper); padding: 12px 18px; border-radius: 16px; font-weight: 700;
  transition: opacity .2s, transform .2s; z-index: 60; display: flex; gap: 14px; align-items: center; max-width: calc(100vw - 24px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.toast button { background: transparent; border: 0; color: var(--paper); text-decoration: underline; cursor: pointer; font-weight: 700; padding: 0; }
@media (max-width: 820px) { .toast { bottom: 96px; } }

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

@media (max-width: 560px) {
  .course-list li { flex-wrap: wrap; row-gap: 8px; padding-bottom: 8px; border-bottom: 1px solid var(--rule); }
  .course-list li input[type="text"] { flex-basis: calc(100% - 30px); }
  .course-list .swatches { flex: 1; }
}

/* Course colours are chosen for light backgrounds; lift them when used as text on dark. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero-sentence .amount { color: color-mix(in srgb, var(--c) 55%, white); }
}
:root[data-theme="dark"] .hero-sentence .amount { color: color-mix(in srgb, var(--c) 55%, white); }