/* Layout: a day sheet. A date rail, four readings, the things to act on, then one register per concern. */
:root {
  --paper: #F3F5F8;
  --sheet: #FFFFFF;
  --ink: #161D2B;
  --muted: #5C6577;
  --faint: #8A93A5;
  --rule: #E1E5EC;
  --accent: #2742C4;
  --accent-wash: #E8ECFB;
  --away: #C43349;
  --away-wash: #FBE9EC;
  --miss: #A86A12;
  --miss-wash: #FBF1E1;
  --ok: #2B8051;
  --ok-wash: #E4F4EA;
  --late: #7B57D1;
  --display: "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --c-Chem: #4BBCFA; --c-Phys: #8CD952; --c-Biol: #F96BB1; --c-Econ: #B078FF; --c-EAdv: #9F6642;
  --c-Mat2: #F5D441; --c-Mat3: #FF9C5E; --c-Mat4: #FF6277; --c-Math: #77E0CF; --c-MatA: #FF9C5E;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0E1218; --sheet: #161B24; --ink: #E6E9F0; --muted: #9AA3B5; --faint: #6D7689; --rule: #262D3A;
    --accent: #93A6FF; --accent-wash: #1F2747; --away: #F27D8F; --away-wash: #3A1E25; --miss: #E8B35E; --miss-wash: #382B17;
    --ok: #6FCD96; --ok-wash: #17301F; --late: #B49BFF;
    --c-Chem: #5FBFF2; --c-Phys: #ACE067; --c-Biol: #FF9DCA; --c-Econ: #B078FF; --c-EAdv: #BB7451;
    --c-Mat2: #FFE570; --c-Mat3: #FF9B47; --c-Mat4: #F0656F; --c-Math: #89F0E0; --c-MatA: #FF9B47;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0E1218; --sheet: #161B24; --ink: #E6E9F0; --muted: #9AA3B5; --faint: #6D7689; --rule: #262D3A;
  --accent: #93A6FF; --accent-wash: #1F2747; --away: #F27D8F; --away-wash: #3A1E25; --miss: #E8B35E; --miss-wash: #382B17;
  --ok: #6FCD96; --ok-wash: #17301F; --late: #B49BFF;
  --c-Chem: #5FBFF2; --c-Phys: #ACE067; --c-Biol: #FF9DCA; --c-Econ: #B078FF; --c-EAdv: #BB7451;
  --c-Mat2: #FFE570; --c-Mat3: #FF9B47; --c-Mat4: #F0656F; --c-Math: #89F0E0; --c-MatA: #FF9B47;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); font-size: 15px; line-height: 1.45; }
.wrap { max-width: 1180px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); padding-block: 20px 64px; }
h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* Masthead */
.mast { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand h1 { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }
.brand .pulse-mark { width: 26px; height: 14px; align-self: center; }
.brand small { color: var(--muted); font-size: 13px; }
.who { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.who .avatar { width: 26px; height: 26px; border-radius: 50%; background: var(--accent-wash); color: var(--accent); display: grid; place-items: center; font-weight: 700; font-size: 12px; }
.sample { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--miss); background: var(--miss-wash); padding: 3px 8px; border-radius: 4px; }

/* Day rail */
.rail { display: grid; grid-template-columns: auto 1fr auto; align-items: end; gap: 20px; padding-block: 22px 18px; }
.dayhead .eyebrow { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }
.dayhead h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; margin-top: 4px; }
.dayhead .asof { color: var(--muted); font-size: 13px; margin-top: 6px; }
.week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; max-width: 520px; justify-self: end; width: 100%; }
.wd { border: 1px solid var(--rule); background: var(--sheet); border-radius: 8px; padding: 6px 6px 7px; text-align: left; cursor: pointer; display: grid; gap: 4px; min-width: 0; }
.wd:hover { border-color: var(--faint); }
.wd[aria-current="date"] { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.wd .d { font-size: 11px; color: var(--muted); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.wd .n { font-family: var(--display); font-weight: 700; font-size: 16px; }
.wd .bars { display: grid; gap: 2px; }
.wd .bar { height: 4px; border-radius: 2px; background: var(--rule); overflow: hidden; }
.wd .bar i { display: block; height: 100%; border-radius: 2px; }
.wd .bar.att i { background: var(--ink); }
.wd .bar.hw i { background: var(--ok); }
.wd.future { background: transparent; cursor: default; }
.wd.future .n { color: var(--faint); }
.navs { display: flex; gap: 6px; }
.navs button { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--rule); background: var(--sheet); cursor: pointer; font-size: 16px; }

/* Readings */
.readings { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; }
.reading { padding: 16px 18px 14px; display: grid; gap: 6px; align-content: start; min-width: 0; }
.reading + .reading { border-left: 1px solid var(--rule); }
.reading .label { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.reading .fig { display: flex; align-items: baseline; gap: 8px; }
.reading .big { font-family: var(--display); font-size: 34px; font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.reading .of { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.reading .line { font-size: 13px; color: var(--muted); }
.reading svg { width: 100%; height: 30px; display: block; }

/* Sections */
.tabs { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--paper); display: flex; gap: 4px; overflow-x: auto; padding-block: 14px 10px; margin-top: 18px; border-bottom: 1px solid var(--rule); scrollbar-width: none; }
.tabs a { white-space: nowrap; text-decoration: none; color: var(--muted); font-weight: 600; font-size: 14px; padding: 6px 10px; border-radius: 6px; }
.tabs a:hover { color: var(--ink); background: var(--sheet); }
.tabs a .c { font-family: var(--mono); font-size: 12px; color: var(--faint); margin-left: 4px; }
section { padding-top: 30px; scroll-margin-top: 60px; }
.sh { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.sh h2 { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.sh p { margin: 0; color: var(--muted); font-size: 14px; }

/* Needs a look */
.looks { display: grid; gap: 8px; }
.look { display: grid; grid-template-columns: 4px 1fr auto; gap: 0 14px; background: var(--sheet); border: 1px solid var(--rule); border-radius: 10px; padding: 12px 14px 12px 0; align-items: center; }
.look .stripe { align-self: stretch; border-radius: 0 3px 3px 0; }
.look.high .stripe { background: var(--away); }
.look.mid .stripe { background: var(--miss); }
.look.low .stripe { background: var(--faint); }
.look .t { font-weight: 600; font-size: 15px; }
.look .s { color: var(--muted); font-size: 13.5px; margin-top: 2px; }
.look .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--rule); padding: 3px 7px; border-radius: 4px; white-space: nowrap; }

/* Shared bits */
.course { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); font-weight: 600; white-space: nowrap; }
.course::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--cc, var(--faint)); }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.card { background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; padding: 14px 16px; min-width: 0; }
.card h3 { font-size: 15px; font-weight: 700; }
.card .meta { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; color: var(--muted); font-size: 13px; margin-top: 3px; }
.pill { font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.pill.away { color: var(--away); background: var(--away-wash); }
.pill.miss { color: var(--miss); background: var(--miss-wash); }
.pill.ok { color: var(--ok); background: var(--ok-wash); }
.pill.mute { color: var(--muted); background: var(--paper); }
.pill.acc { color: var(--accent); background: var(--accent-wash); }

/* Roll strip: one mark per booked student, like a roll book's column */
.strip { display: flex; flex-wrap: wrap; gap: 3px; margin-top: 10px; }
.m { width: 11px; height: 11px; border-radius: 2px; }
.m.came { background: var(--ink); }
.m.late { background: var(--late); }
.m.away { background: transparent; box-shadow: inset 0 0 0 1.5px var(--away); position: relative; }
.m.away::after { content: ""; position: absolute; inset: 4px; background: var(--away); border-radius: 1px; }
.m.unmarked { box-shadow: inset 0 0 0 1px var(--faint); opacity: 0.6; }
.m.hand { border-radius: 50%; background: var(--ok); }
.m.handlate { border-radius: 50%; background: linear-gradient(90deg, var(--ok) 50%, transparent 50%); box-shadow: inset 0 0 0 1.5px var(--ok); }
.m.missing { border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--miss); }
.m.excused { border-radius: 50%; background: var(--rule); }

.names { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.name { font-size: 13.5px; background: var(--paper); border-radius: 6px; padding: 3px 8px; }
.name em { font-style: normal; color: var(--muted); }
.name.flag { box-shadow: inset 0 0 0 1px var(--away); }

/* Absent table */
.table-wrap { overflow-x: auto; background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 11.5px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
td { padding: 10px 14px; border-bottom: 1px solid var(--rule); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td.who { font-weight: 600; white-space: nowrap; }
td .sub { display: block; color: var(--muted); font-weight: 400; font-size: 12.5px; }
.group-row td { background: var(--paper); font-weight: 600; font-size: 13px; color: var(--muted); padding-block: 7px; }
.more { background: none; border: 0; color: var(--accent); font-weight: 600; cursor: pointer; padding: 0; font-size: 13px; }

/* Homework rows */
.hwlist { display: grid; gap: 10px; }
.hw { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr) 110px; gap: 16px; align-items: center; }
.hw .ratio { text-align: right; }
.hw .ratio b { font-family: var(--display); font-size: 22px; font-weight: 700; }
.hw .ratio span { display: block; font-size: 12px; color: var(--muted); }
.hw .strip { margin-top: 0; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 12.5px; color: var(--muted); margin-top: 12px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }

/* Tutes */
.tute .students { display: grid; gap: 10px; margin-top: 12px; }
.stu { border-top: 1px solid var(--rule); padding-top: 10px; display: grid; gap: 6px; }
.stu .top { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.stu .nm { font-weight: 600; }
.goals { display: grid; gap: 4px; margin: 0; padding: 0; list-style: none; }
.goals li { display: grid; grid-template-columns: 16px 1fr auto; gap: 8px; align-items: baseline; font-size: 14px; }
.goals .g { width: 12px; height: 12px; border-radius: 3px; box-shadow: inset 0 0 0 1.5px var(--faint); transform: translateY(1px); }
.goals .done .g { background: var(--ok); box-shadow: none; }
.goals .notdone .g { box-shadow: inset 0 0 0 1.5px var(--miss); }
.goals .src { font-size: 11.5px; color: var(--faint); font-family: var(--mono); }
.goals .notdone span:nth-child(2) { color: var(--muted); }
.nogoal { color: var(--muted); font-size: 13.5px; font-style: italic; }

/* Plans */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.meter { height: 8px; background: var(--paper); border-radius: 4px; overflow: hidden; margin-top: 10px; display: flex; }
.meter i { display: block; height: 100%; }

/* Run sheet */
.tick { font-family: var(--mono); font-size: 13px; }
.tick.y { color: var(--ok); }
.tick.n { color: var(--away); }
.tick.p { color: var(--miss); }
.tick.na { color: var(--faint); }

details.how { margin-top: 36px; background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; padding: 12px 16px; }
details.how summary { cursor: pointer; font-weight: 600; }
details.how dl { display: grid; grid-template-columns: 160px 1fr; gap: 8px 16px; margin: 14px 0 4px; font-size: 14px; }
details.how dt { font-weight: 600; }
details.how dd { margin: 0; color: var(--muted); }

@media (max-width: 900px) {
  .rail { grid-template-columns: 1fr; }
  .week { justify-self: stretch; max-width: none; }
  .navs { display: none; }
  .readings { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reading:nth-child(3) { border-left: 0; }
  .reading:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .grid2, .plans { grid-template-columns: 1fr; }
  .hw { grid-template-columns: 1fr auto; }
  .hw .strip { grid-column: 1 / -1; grid-row: 2; }
}
@media (max-width: 480px) {
  .readings { grid-template-columns: 1fr; }
  .reading + .reading { border-left: 0; border-top: 1px solid var(--rule); }
  details.how dl { grid-template-columns: 1fr; }
  .look { grid-template-columns: 4px 1fr; }
  .look .k { display: none; }
}
@media (prefers-reduced-motion: no-preference) {
  .wd, .navs button, .tabs a { transition: border-color .15s, background .15s, color .15s; }
}

/* Sign-in, loading and refusal */
.gate { min-height: 100vh; display: grid; place-items: center; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); padding-block: 32px; }
.gate-card { width: 100%; max-width: 400px; background: var(--sheet); border: 1px solid var(--rule); border-radius: 14px; padding: 26px 24px; display: grid; gap: 14px; }
.gate-card .brand { margin-bottom: 4px; }
.gate-card form { display: grid; gap: 12px; }
.gate-h { font-size: 22px; font-weight: 700; }
.gate-p { margin: 0; color: var(--muted); }
.gate-card input { font: inherit; font-size: 16px; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); }
.gate-card input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.gate-code { font-family: var(--mono); letter-spacing: 0.12em; text-transform: uppercase; }
.btn { font-weight: 600; padding: 10px 14px; border-radius: 8px; border: 0; background: var(--accent); color: var(--sheet); cursor: pointer; }
.btn:disabled { opacity: 0.6; cursor: default; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--accent); font-weight: 600; cursor: pointer; justify-self: start; }
.gate-err { margin: 0; color: var(--away); font-size: 14px; }
.who button { background: none; border: 1px solid var(--rule); border-radius: 6px; padding: 3px 8px; color: var(--muted); cursor: pointer; font-size: 12.5px; }
.state { background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; padding: 28px 22px; margin-top: 24px; color: var(--muted); }
.state h2 { color: var(--ink); font-size: 18px; margin-bottom: 6px; }
.empty { color: var(--muted); font-size: 14px; background: var(--sheet); border: 1px dashed var(--rule); border-radius: 12px; padding: 16px; }
.m.pending { border-radius: 50%; box-shadow: inset 0 0 0 1px var(--faint); opacity: 0.6; }
.navs button:disabled { opacity: 0.35; cursor: default; }