:root {
  --bg: #0a0a0d;
  --bg-glow: rgba(232, 184, 74, 0.07);
  --surface: #131318;
  --surface-2: #1b1b22;
  --surface-3: #24242d;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f3f0e8;
  --text-2: #a7a3ad;
  --text-3: #6f6c76;
  --gold: #e8b84a;
  --gold-2: #f6d98b;
  --gold-ink: #1a1405;
  --gold-soft: rgba(232, 184, 74, 0.12);
  --blue: #4c86ff;
  --blue-hover: #6b9bff;
  --blue-soft: rgba(76, 134, 255, 0.14);
  --on-blue: #ffffff;
  --danger: #ff6b6b;
  --danger-soft: rgba(255, 107, 107, 0.12);
  --warn-bg: rgba(232, 184, 74, 0.1);
  --warn-text: #f0cd7a;
  --g-S: #e8b84a; --g-A: #4c86ff; --g-B: #2fc4a8; --g-C: #9d7bff;
  --g-D: #f2a23c; --g-E: #f07a4a; --g-F: #ff5d5d;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 32px rgba(0, 0, 0, 0.35);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f6f4ef; --bg-glow: rgba(200, 150, 40, 0.10);
    --surface: #ffffff; --surface-2: #f3f1ec; --surface-3: #e9e6df;
    --border: rgba(20, 18, 30, 0.09); --border-strong: rgba(20, 18, 30, 0.18);
    --text: #16151b; --text-2: #5d5a66; --text-3: #8e8a96;
    --gold: #b98914; --gold-2: #8a6508; --gold-ink: #ffffff; --gold-soft: rgba(185, 137, 20, 0.12);
    --blue: #2457d6; --blue-hover: #1c48b8; --blue-soft: rgba(36, 87, 214, 0.1);
    --danger: #d63b3b; --danger-soft: rgba(214, 59, 59, 0.08);
    --warn-bg: #fbf1d8; --warn-text: #7a5a06;
    --g-S: #b98914; --g-A: #2457d6; --g-B: #128a74; --g-C: #6b46e0;
    --g-D: #c97a0e; --g-E: #d4572a; --g-F: #d63b3b;
    --shadow: 0 1px 2px rgba(20, 18, 30, 0.04), 0 8px 24px rgba(20, 18, 30, 0.06);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f6f4ef; --bg-glow: rgba(200, 150, 40, 0.10);
  --surface: #ffffff; --surface-2: #f3f1ec; --surface-3: #e9e6df;
  --border: rgba(20, 18, 30, 0.09); --border-strong: rgba(20, 18, 30, 0.18);
  --text: #16151b; --text-2: #5d5a66; --text-3: #8e8a96;
  --gold: #b98914; --gold-2: #8a6508; --gold-ink: #ffffff; --gold-soft: rgba(185, 137, 20, 0.12);
  --blue: #2457d6; --blue-hover: #1c48b8; --blue-soft: rgba(36, 87, 214, 0.1);
  --danger: #d63b3b; --danger-soft: rgba(214, 59, 59, 0.08);
  --warn-bg: #fbf1d8; --warn-text: #7a5a06;
  --g-S: #b98914; --g-A: #2457d6; --g-B: #128a74; --g-C: #6b46e0;
  --g-D: #c97a0e; --g-E: #d4572a; --g-F: #d63b3b;
  --shadow: 0 1px 2px rgba(20, 18, 30, 0.04), 0 8px 24px rgba(20, 18, 30, 0.06);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(900px 420px at 50% -120px, var(--bg-glow), transparent 70%), var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font: 400 15px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; margin: 0; }
a { color: inherit; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 16px; }

/* header */
.top { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(140%) blur(12px); -webkit-backdrop-filter: saturate(140%) blur(12px); border-bottom: 1px solid var(--border); }
.top .wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
.logo { font-family: var(--font-display); font-size: 22px; letter-spacing: -0.04em; text-decoration: none; display: inline-flex; align-items: baseline; line-height: 1; }
.logo b { color: var(--gold); font-weight: 700; }
.logo span { color: var(--text); font-weight: 500; margin-left: 1px; position: relative; }
.logo span::after { content: ""; position: absolute; left: 2px; right: 1px; bottom: -4px; height: 2px; border-radius: 2px; background: var(--blue); }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.navlink { color: var(--text-2); text-decoration: none; padding: 8px 10px; border-radius: var(--radius-sm); font-size: 14px; }
.navlink:hover, .navlink[aria-current="page"] { color: var(--text); background: var(--surface-2); }
.icon-btn { width: 38px; height: 38px; display: grid; place-items: center; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface); color: var(--text-2); }
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }
.icon-btn svg { width: 18px; height: 18px; }
.theme-sun { display: none; }
:root[data-theme="light"] .theme-sun { display: block; }
:root[data-theme="light"] .theme-moon { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-sun { display: block; }
  :root:not([data-theme]) .theme-moon { display: none; }
}

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 18px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong); background: var(--surface); font-weight: 500; text-decoration: none; transition: background .15s, border-color .15s, transform .1s; white-space: nowrap; }
.btn:hover { border-color: var(--text-3); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: var(--on-blue); }
.btn-primary:hover { background: var(--blue-hover); border-color: var(--blue-hover); }
.btn-gold { background: var(--gold); border-color: var(--gold); color: var(--gold-ink); }
.btn-sm { height: 36px; padding: 0 12px; font-size: 14px; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { color: var(--text); background: var(--surface-2); border-color: transparent; }
.btn svg { width: 16px; height: 16px; }

/* banner */
.banner { background: var(--warn-bg); color: var(--warn-text); font-size: 13.5px; border-bottom: 1px solid var(--border); }
.banner .wrap { display: flex; align-items: center; gap: 10px; min-height: 42px; padding-top: 6px; padding-bottom: 6px; }
.banner p { margin: 0; flex: 1; }
.banner a { font-weight: 600; }
.banner button { background: none; border: 0; color: inherit; padding: 6px; border-radius: 6px; display: grid; }
.banner button svg { width: 16px; height: 16px; }
.banner[hidden] { display: none; }

/* home */
.hero { padding: 64px 0 40px; display: grid; gap: 40px; align-items: center; }
@media (min-width: 900px) { .hero { grid-template-columns: 1.1fr 0.9fr; padding: 96px 0 64px; } }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--gold); background: var(--gold-soft); padding: 5px 12px; border-radius: 999px; margin-bottom: 20px; font-weight: 500; }
.hero h1 { font-size: clamp(36px, 7vw, 60px); }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero .lead { color: var(--text-2); font-size: 17px; max-width: 520px; margin: 18px 0 28px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 10px; }
.demo { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 20px; box-shadow: var(--shadow); max-width: 440px; width: 100%; justify-self: center; }
.demo-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.demo-cell { background: var(--surface-2); border-radius: var(--radius-sm); padding: 10px 12px; }
.demo-cell small { display: block; color: var(--text-3); font-size: 12px; }
.demo-cell b { font-family: var(--font-display); font-size: 20px; font-weight: 600; }
.demo-cell b i { font-style: normal; color: var(--text-3); font-size: 13px; font-weight: 400; }
.section { padding: 40px 0; }
.section-head { margin-bottom: 24px; }
.section-head h2 { font-size: clamp(24px, 4vw, 32px); }
.section-head p { color: var(--text-2); margin: 8px 0 0; }
.steps { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.step .num { font-family: var(--font-display); color: var(--gold); font-size: 14px; font-weight: 600; }
.step h3 { font-size: 18px; margin: 8px 0 6px; }
.step p { color: var(--text-2); margin: 0; font-size: 14px; }
.footer { border-top: 1px solid var(--border); padding: 28px 0 40px; color: var(--text-3); font-size: 13px; margin-top: 40px; }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }

/* calculator layout */
.calc { display: grid; gap: 20px; padding-top: 24px; padding-bottom: 120px; }
@media (min-width: 1000px) { .calc { grid-template-columns: minmax(0, 1fr) 320px; align-items: start; padding-bottom: 60px; } }
.page-title { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.page-title h1 { font-size: clamp(26px, 5vw, 34px); }
.page-title p { color: var(--text-2); margin: 4px 0 0; font-size: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field > span { font-size: 12.5px; color: var(--text-2); font-weight: 500; }
.select, .input { height: 44px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong); background: var(--surface); padding: 0 12px; width: 100%; }
.select { appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23888' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; }
.input:focus, .select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }

/* search */
.search { position: relative; margin-bottom: 16px; }
.search-box { display: flex; align-items: center; gap: 10px; height: 52px; border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--surface); padding: 0 14px; }
.search-box:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }
.search-box svg { width: 20px; height: 20px; color: var(--text-3); flex: none; }
.search-box input { flex: 1; min-width: 0; border: 0; background: transparent; height: 100%; font-size: 16px; outline: none; }
.results { position: absolute; z-index: 20; left: 0; right: 0; top: calc(100% + 6px); background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius); box-shadow: var(--shadow); padding: 6px; max-height: 360px; overflow-y: auto; }
.results[hidden] { display: none; }
.result { display: flex; align-items: center; gap: 12px; width: 100%; text-align: left; padding: 10px; border: 0; border-radius: var(--radius-sm); background: transparent; }
.result:hover, .result.active { background: var(--surface-2); }
.result .code { font-family: var(--font-display); font-weight: 600; font-size: 14px; min-width: 88px; }
.result .title { flex: 1; min-width: 0; color: var(--text-2); font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.result.added { opacity: 0.5; }
.results .none { padding: 12px; color: var(--text-2); font-size: 14px; }
.results .none button { margin-top: 10px; }
.pill { font-size: 11.5px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--surface-3); color: var(--text-2); white-space: nowrap; letter-spacing: 0.02em; }

/* subject cards */
.cards { display: grid; gap: 14px; }
.empty { text-align: center; padding: 48px 20px; border: 1px dashed var(--border-strong); border-radius: var(--radius); color: var(--text-2); }
.empty h2 { font-size: 20px; color: var(--text); margin-bottom: 6px; }
.empty p { margin: 0 auto; max-width: 360px; font-size: 14px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); animation: rise .25s ease-out; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
.card-head { display: flex; align-items: flex-start; gap: 12px; padding: 16px 16px 0; }
.card-head .meta { flex: 1; min-width: 0; }
.card-head .code { font-family: var(--font-display); font-weight: 600; font-size: 13px; color: var(--gold); letter-spacing: 0.02em; }
.card-head h2 { font-size: 17px; margin: 2px 0 6px; }
.card-head .tags { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.card-body { padding: 14px 16px 16px; display: grid; gap: 12px; }
.seg { display: inline-flex; background: var(--surface-2); border-radius: 999px; padding: 3px; }
.seg button { border: 0; background: transparent; padding: 4px 10px; border-radius: 999px; font-size: 12.5px; color: var(--text-2); font-weight: 500; }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.marks { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.mark { background: var(--surface-2); border: 1px solid transparent; border-radius: var(--radius-sm); padding: 8px 10px; display: flex; flex-direction: column; gap: 2px; }
.mark:focus-within { border-color: var(--blue); }
.mark.bad { border-color: var(--danger); background: var(--danger-soft); }
.mark label { font-size: 12px; color: var(--text-2); font-weight: 500; }
.mark .val { display: flex; align-items: baseline; gap: 4px; }
.mark input { width: 100%; min-width: 0; border: 0; background: transparent; font-family: var(--font-display); font-size: 22px; font-weight: 600; padding: 0; outline: none; }
.mark input::placeholder { color: var(--text-3); font-weight: 400; }
.mark .max { color: var(--text-3); font-size: 13px; white-space: nowrap; }
.err { color: var(--danger); font-size: 12.5px; margin: 0; }
.err:empty { display: none; }

details.fold { background: var(--surface-2); border-radius: var(--radius-sm); }
details.fold > summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 10px; padding: 12px; font-weight: 500; font-size: 14px; user-select: none; }
details.fold > summary::-webkit-details-marker { display: none; }
details.fold > summary .sum { margin-left: auto; color: var(--text-2); font-weight: 400; font-family: var(--font-display); }
details.fold > summary .chev { width: 16px; height: 16px; color: var(--text-3); transition: transform .2s; flex: none; }
details.fold[open] > summary .chev { transform: rotate(180deg); }
.fold-body { padding: 0 12px 12px; display: grid; gap: 8px; }
.item { display: grid; grid-template-columns: minmax(0, 1fr) 72px 20px 64px 34px; gap: 6px; align-items: center; }
.item input { height: 38px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); padding: 0 10px; min-width: 0; width: 100%; }
.item input:focus { outline: none; border-color: var(--blue); }
.item input.bad { border-color: var(--danger); background: var(--danger-soft); }
.item .score, .item .imax { text-align: center; font-family: var(--font-display); font-weight: 600; }
.item .slash { color: var(--text-3); text-align: center; }
.item .rm { width: 34px; height: 34px; border: 0; background: transparent; color: var(--text-3); border-radius: 8px; display: grid; place-items: center; }
.item .rm:hover { color: var(--danger); background: var(--danger-soft); }
.item .rm svg { width: 16px; height: 16px; }
.item-head { display: grid; grid-template-columns: minmax(0, 1fr) 72px 20px 64px 34px; gap: 6px; font-size: 11.5px; color: var(--text-3); padding: 0 2px; }
.item-head span:nth-child(2), .item-head span:nth-child(3) { text-align: center; }
.fold-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.fold-foot .note { font-size: 12.5px; color: var(--text-2); }

.ranges { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
@media (min-width: 560px) { .ranges { grid-template-columns: repeat(7, minmax(0, 1fr)); } }
.range { display: flex; flex-direction: column; align-items: center; gap: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 6px 4px; }
.range label { font-family: var(--font-display); font-weight: 700; font-size: 15px; }
.range input { width: 100%; text-align: center; border: 0; background: transparent; font-family: var(--font-display); font-weight: 600; font-size: 16px; outline: none; height: 26px; }
.range small { font-size: 11px; color: var(--text-3); }
.range.bad { border-color: var(--danger); }
.range-part { font-size: 12.5px; font-weight: 600; color: var(--text-2); margin: 4px 0 -2px; }

.result-row { display: flex; align-items: center; gap: 14px; background: var(--surface-2); border-radius: var(--radius-sm); padding: 12px; }
.ring { width: 64px; height: 64px; flex: none; position: relative; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 6; }
.ring .track { stroke: var(--surface-3); }
.ring .bar { stroke: var(--ring, var(--gold)); stroke-linecap: round; transition: stroke-dashoffset .5s cubic-bezier(.2,.8,.2,1), stroke .3s; }
.ring b { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 17px; }
.result-row .info { flex: 1; min-width: 0; }
.result-row .total { font-family: var(--font-display); font-size: 20px; font-weight: 600; }
.result-row .total i { font-style: normal; color: var(--text-3); font-size: 14px; font-weight: 400; }
.result-row .split { color: var(--text-2); font-size: 13px; }
.grade { min-width: 48px; height: 48px; padding: 0 8px; border-radius: 12px; display: grid; place-items: center; font-family: var(--font-display); font-size: 24px; font-weight: 700; background: color-mix(in srgb, var(--gc, var(--text-3)) 16%, transparent); color: var(--gc, var(--text-3)); flex: none; }
.grade.none { font-size: 11.5px; font-weight: 500; text-align: center; line-height: 1.2; font-family: var(--font-body); width: 76px; }

/* summary */
.summary { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
@media (min-width: 1000px) { .summary { position: sticky; top: 80px; } }
.summary h2 { font-size: 15px; color: var(--text-2); font-weight: 500; font-family: var(--font-body); letter-spacing: 0; }
.gpa { font-family: var(--font-display); font-size: 48px; font-weight: 700; line-height: 1.1; color: var(--gold); margin: 6px 0 2px; }
.gpa.muted { color: var(--text-3); }
.summary .sub { color: var(--text-2); font-size: 13px; margin: 0 0 14px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.stat { background: var(--surface-2); border-radius: var(--radius-sm); padding: 10px 12px; }
.stat small { display: block; font-size: 12px; color: var(--text-2); }
.stat b { font-family: var(--font-display); font-size: 20px; font-weight: 600; }
.summary-list { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 4px; font-size: 13.5px; }
.summary-list li { display: flex; justify-content: space-between; gap: 8px; padding: 6px 0; border-top: 1px solid var(--border); }
.summary-list li span:first-child { color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.summary-list li b { font-family: var(--font-display); }
.dock { display: none; }
@media (max-width: 999px) {
  .summary { display: none; }
  .dock { display: flex; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 25; align-items: center; gap: 12px; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--border-strong); border-radius: 16px; padding: 10px 14px; box-shadow: 0 10px 30px rgba(0,0,0,.35); }
  .dock .gpa { font-size: 26px; margin: 0; }
  .dock .lbl { font-size: 11.5px; color: var(--text-2); line-height: 1.2; }
  .dock .right { margin-left: auto; text-align: right; font-size: 12.5px; color: var(--text-2); }
}

/* dialog */
dialog { border: 1px solid var(--border-strong); border-radius: 18px; background: var(--surface); color: var(--text); padding: 0; width: min(440px, calc(100vw - 32px)); box-shadow: 0 24px 60px rgba(0,0,0,.45); }
dialog::backdrop { background: rgba(0, 0, 0, 0.55); backdrop-filter: blur(2px); }
dialog form { padding: 20px; display: grid; gap: 14px; }
dialog h2 { font-size: 20px; }
dialog .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
dialog .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }

.toast { position: fixed; left: 50%; bottom: calc(96px + env(safe-area-inset-bottom)); transform: translate(-50%, 20px); opacity: 0; background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 999px; font-size: 14px; font-weight: 500; z-index: 60; transition: opacity .2s, transform .2s; pointer-events: none; max-width: calc(100vw - 32px); text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 520px) {
  .nav-text { display: none; }
  .card-head h2 { font-size: 16px; }
  .mark input { font-size: 20px; }
  .item, .item-head { grid-template-columns: minmax(0, 1fr) 56px 12px 52px 30px; gap: 4px; }
  .item .rm { width: 30px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* confirm subjects bar */
.lockbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: space-between; background: var(--gold-soft); border: 1px solid color-mix(in srgb, var(--gold) 35%, transparent); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 14px; }
.lockbar[hidden] { display: none; }
.lockbar div { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1 1 220px; }
.lockbar b { font-family: var(--font-display); font-weight: 600; }
.lockbar span { font-size: 13px; color: var(--text-2); }
.lockbar.locked, .lockbar.done { background: var(--blue-soft); border-color: color-mix(in srgb, var(--blue) 30%, transparent); }
.search-box:has(input:disabled) { opacity: 0.6; }

/* CGPA page */
.cg .cg-inputs { display: grid; gap: 14px; align-content: start; }
.cg .page-title { margin-bottom: 2px; }
.hint { margin: 0; font-size: 13px; color: var(--text-2); }
.cg-card .card-body { gap: 12px; }
.cg-card .card-head .btn { flex: none; }
.cg-card [data-pane] { display: grid; gap: 12px; }
.cg-card [data-pane][hidden] { display: none; }
.marks.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cg-fold { background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: var(--radius); }
.cg-fold > summary { padding: 14px 16px; }
.cg-fold .fold-body { padding: 0 16px 16px; gap: 12px; }
.sem-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.sem-row { display: flex; align-items: center; gap: 12px; background: var(--surface-2); border-radius: var(--radius-sm); padding: 10px 12px; min-width: 0; }
.sem-main { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.sem-main b { font-family: var(--font-display); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.sem-main span { font-size: 12.5px; color: var(--text-2); }
.sem-gpa { font-family: var(--font-display); font-weight: 700; font-size: 22px; color: var(--gold); flex: none; }
.sem-gpa.muted { color: var(--text-3); }
.sem-gpa.small { font-size: 14px; font-weight: 600; color: var(--text-2); }
.sem-act { display: flex; gap: 2px; flex: none; }
.mini { width: 34px; height: 34px; border: 0; background: transparent; color: var(--text-3); border-radius: 8px; display: grid; place-items: center; }
.mini:hover { color: var(--text); background: var(--surface-3); }
.mini[data-rm-past]:hover, .mini[data-rm-cleared]:hover { color: var(--danger); background: var(--danger-soft); }
.mini svg { width: 16px; height: 16px; }
.sem-empty { font-size: 13.5px; color: var(--text-3); padding: 14px; text-align: center; border: 1px dashed var(--border-strong); border-radius: var(--radius-sm); }
.tag { font-size: 11.5px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--surface-3); color: var(--text-2); margin-top: 4px; }
.tag.blue { background: var(--blue-soft); color: var(--blue); }
.tag.warn { background: var(--warn-bg); color: var(--warn-text); }
.cleared-add { display: grid; grid-template-columns: minmax(0, 1fr) 90px auto; gap: 8px; align-items: end; }
.cleared-add .btn { height: 44px; }
.points { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.points span { display: flex; flex-direction: column; align-items: center; padding: 6px 0; border-radius: 8px; background: color-mix(in srgb, var(--gc) 14%, transparent); font-family: var(--font-display); font-size: 13px; color: var(--text-2); }
.points b { color: var(--gc); font-size: 17px; }

.cg-result { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.cg-result::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--gold), var(--blue)); }
@media (min-width: 1000px) { .cg-result { position: sticky; top: 80px; } }
.cg-result h2 { font-size: 15px; color: var(--text-2); font-weight: 500; font-family: var(--font-body); letter-spacing: 0; }
.cg-big { font-family: var(--font-display); font-size: 64px; font-weight: 700; line-height: 1; letter-spacing: -0.03em; color: var(--gold); margin: 8px 0 6px; }
.cg-big.muted { color: var(--text-3); }
.cg-result .sub { color: var(--text-2); font-size: 13px; margin: 0 0 14px; }
.proj { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; background: var(--blue-soft); border: 1px solid color-mix(in srgb, var(--blue) 30%, transparent); border-radius: var(--radius-sm); padding: 10px 12px; margin-bottom: 12px; }
.proj[hidden] { display: none; }
.proj span { font-size: 13px; color: var(--text-2); flex: 1 1 100%; }
.proj b { font-family: var(--font-display); font-size: 26px; font-weight: 700; color: var(--blue); line-height: 1.1; }
.proj i, .dock .right span { font-style: normal; font-size: 13px; font-weight: 600; }
.up { color: var(--g-B); }
.down { color: var(--danger); }
.same { color: var(--text-2); }
.bd-title { font-size: 13px; font-family: var(--font-body); font-weight: 500; color: var(--text-2); letter-spacing: 0; margin: 16px 0 8px; }
.breakdown { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.breakdown li { display: grid; gap: 5px; }
.bd-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 10px; }
.bd-name { display: flex; flex-direction: column; font-size: 13.5px; font-weight: 500; min-width: 0; }
.bd-name small { font-size: 12px; color: var(--text-3); font-weight: 400; }
.bd-top b { font-family: var(--font-display); font-size: 17px; }
.bar { height: 6px; border-radius: 6px; background: var(--surface-3); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 6px; background: var(--gold); transition: width .4s cubic-bezier(.2,.8,.2,1); }
.breakdown li.now .bar i { background: var(--blue); }
.breakdown li.now .bd-top b { color: var(--blue); }
.breakdown .bd-note { font-size: 12.5px; color: var(--text-3); }

@media (max-width: 999px) {
  .cg-result { order: -1; }
  .cg-big { font-size: 56px; }
}
@media (max-width: 520px) {
  .top nav { gap: 2px; }
  .navlink { padding: 8px 7px; }
  .cleared-add { grid-template-columns: minmax(0, 1fr) 76px; }
  .cleared-add .btn { grid-column: 1 / -1; }
  .points span { font-size: 12px; }
}
.cg .cg-title { grid-column: 1 / -1; margin-bottom: -6px; }
.dock.away { opacity: 0; transform: translateY(12px); pointer-events: none; }
.dock { transition: opacity .2s, transform .2s; }
@media (max-width: 999px) { .cg .cg-title { order: -2; } }
.stat b small { font-size: 13px; font-weight: 500; color: var(--text-2); }

/* subject suggestions in the add-a-subject dialog */
.suggest { margin-top: -4px; }
.suggest[hidden] { display: none; }
.suggest p { margin: 0 0 6px; font-size: 12.5px; color: var(--text-2); }
.suggest-list { display: grid; gap: 2px; max-height: 220px; overflow-y: auto; background: var(--surface-2); border-radius: var(--radius-sm); padding: 4px; }
.suggest-list .result { padding: 8px; }
.suggest-list .result:hover { background: var(--surface-3); }
.suggest-list .result .code { min-width: 78px; font-size: 13px; }
@media (max-width: 520px) { .suggest-list .result .pill { display: none; } }
dialog form > *, .suggest-list .result { min-width: 0; }

/* share page */
.sh .sh-title { grid-column: 1 / -1; margin-bottom: -6px; }
.sh-controls { display: grid; gap: 14px; align-content: start; }
.sh-preview { display: grid; gap: 12px; align-content: start; }
@media (min-width: 1000px) {
  .sh { grid-template-columns: minmax(0, 1fr) 380px; }
  .sh-preview { grid-column: 2; grid-row: 2; position: sticky; top: 80px; }
  .sh-controls { grid-column: 1; grid-row: 2; }
}
.sh-frame { display: grid; place-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.sh-frame canvas { display: block; width: 100%; height: auto; border-radius: 10px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35); }
.sh-frame[data-size="story"] canvas { max-width: min(100%, calc((100svh - 220px) * 9 / 16)); }
.sh-frame.empty canvas { opacity: 0.35; }
.sh-actions { display: flex; gap: 10px; }
.sh-actions .btn { flex: 1; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.seg-wide { display: flex; width: 100%; }
.seg-wide button { flex: 1; padding: 8px 10px; font-size: 14px; display: flex; flex-direction: column; align-items: center; line-height: 1.25; }
.seg-wide small { font-size: 11.5px; color: var(--text-3); font-weight: 400; }
.picks { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.picks:empty { display: none; }
.picks-head { display: flex; align-items: center; justify-content: space-between; font-size: 12.5px; font-weight: 500; color: var(--text-2); margin-bottom: -4px; }
.pick { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid transparent; cursor: pointer; min-width: 0; }
.pick:has(input:checked) { border-color: color-mix(in srgb, var(--gold) 45%, transparent); background: var(--gold-soft); }
.pick:has(input:focus-visible) { outline: 2px solid var(--blue); outline-offset: 2px; }
.pick.off { cursor: default; opacity: 0.6; }
.pick input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pick .box { width: 22px; height: 22px; flex: none; border-radius: 6px; border: 2px solid var(--border-strong); display: grid; place-items: center; color: transparent; }
.pick .box svg { width: 14px; height: 14px; }
.pick input:checked + .box { background: var(--gold); border-color: var(--gold); color: var(--gold-ink); }
.pick-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.pick-main b { font-family: var(--font-display); font-weight: 600; font-size: 15px; }
.pick-main small { color: var(--text-2); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pick-val { font-family: var(--font-display); font-weight: 700; font-size: 20px; color: var(--gold); flex: none; }
.pick-grade { flex: none; width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 17px; color: var(--gc); background: color-mix(in srgb, var(--gc) 16%, transparent); }
.switch { display: flex; align-items: center; gap: 12px; cursor: pointer; font-size: 14px; font-weight: 500; padding: 4px 0; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch-ui { width: 44px; height: 26px; flex: none; border-radius: 999px; background: var(--surface-3); position: relative; transition: background .15s; }
.switch-ui::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .15s; }
.switch input:checked + .switch-ui { background: var(--blue); }
.switch input:checked + .switch-ui::after { transform: translateX(18px); }
.switch input:focus-visible + .switch-ui { outline: 2px solid var(--blue); outline-offset: 2px; }
.designs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.design { border: 2px solid transparent; background: var(--surface-2); border-radius: 12px; padding: 6px; display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 13px; font-weight: 500; color: var(--text-2); }
.design canvas { width: 100%; height: auto; border-radius: 6px; display: block; }
.design[aria-pressed="true"] { border-color: var(--gold); color: var(--text); }
@media (max-width: 999px) {
  .sh-preview { position: static; }
  .sh-frame[data-size="story"] canvas { max-width: min(100%, calc(62svh * 9 / 16)); }
  .sh-actions { position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 25; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid var(--border-strong); padding: 8px; border-radius: 16px; box-shadow: 0 10px 30px rgba(0,0,0,.35); }
}
@media (max-width: 520px) { .designs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* saved data: semester logs and backup */
.sem-log > summary { list-style: none; cursor: pointer; }
.sem-log > summary::-webkit-details-marker { display: none; }
.sem-log > summary .chev { width: 16px; height: 16px; color: var(--text-3); flex: none; transition: transform .2s; }
.sem-log[open] > summary .chev { transform: rotate(180deg); }
.sem-log[open] > summary { border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
.log { list-style: none; margin: 0; padding: 4px 12px 8px; background: var(--surface-2); display: grid; gap: 0; }
.log li { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 0; border-top: 1px solid var(--border); }
.log-name { min-width: 0; display: flex; flex-direction: column; }
.log-name b { font-family: var(--font-display); font-size: 13px; color: var(--gold); font-weight: 600; }
.log-name span { font-size: 12.5px; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.log-res { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; flex: none; font-family: var(--font-display); font-size: 14px; }
.log-part b { display: inline-grid; place-items: center; min-width: 24px; height: 22px; padding: 0 4px; border-radius: 6px; margin-left: 4px; background: color-mix(in srgb, var(--gc) 16%, transparent); color: var(--gc); font-size: 13px; }
.log-open { display: flex; width: 100%; border-radius: 0 0 var(--radius-sm) var(--radius-sm); background: var(--surface-2); border-top: 1px solid var(--border); }
.data-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.data-actions label.btn { cursor: pointer; }
.data-actions label.btn:focus-within { outline: 2px solid var(--blue); outline-offset: 2px; }
.btn.danger { color: var(--danger); }
.btn.danger:hover { background: var(--danger-soft); color: var(--danger); }
.cg-fold > summary .chev { margin-left: auto; }
.cg-fold > summary .sum + .chev { margin-left: 0; }

/* F box in grade ranges: filled in from E, not typed */
.range.f { background: transparent; border-style: dashed; }
.range.f output { font-family: var(--font-display); font-weight: 600; font-size: 16px; height: 26px; line-height: 26px; color: var(--text-2); }

/* accounts: header avatar, sign-in dialog, profile, admin */
.avatar { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; overflow: hidden; flex: none; background: var(--gold-soft); color: var(--gold); border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent); font-family: var(--font-display); font-weight: 600; font-size: 14px; text-decoration: none; }
.avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.avatar[aria-current="page"], .avatar:hover { border-color: var(--gold); }
.avatar.big { width: 56px; height: 56px; font-size: 22px; }
.signin .hint b { color: var(--text); font-weight: 600; }
.hint.small { font-size: 12px; color: var(--text-3); }
.gbtn { min-height: 44px; display: flex; justify-content: center; align-items: center; }
.devsign { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: center; }
.devsign[hidden] { display: none; }

.pf { padding-top: 24px; padding-bottom: 60px; }
.pf-grid { display: grid; gap: 14px; align-items: start; }
@media (min-width: 900px) { .pf-grid { grid-template-columns: 340px minmax(0, 1fr); } }
.pf-in { gap: 12px; }
.pf-in h2 { font-size: 20px; }
.pf-who { display: flex; align-items: center; gap: 12px; min-width: 0; }
.pf-who > div { display: flex; flex-direction: column; min-width: 0; }
.pf-who b { font-family: var(--font-display); font-size: 18px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-who span:not(.avatar) { font-size: 13px; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-me .card-body { padding-top: 16px; }
.pf-sem { text-decoration: none; color: inherit; }
.pf-sem:hover { background: var(--surface-3); }

.results .none { display: grid; gap: 8px; justify-items: start; }
.results .none button { margin-top: 0; }
.none-acts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.results .none small { color: var(--text-3); font-size: 12px; }

.live { display: inline-flex; align-items: center; gap: 10px; margin: 22px 0 0; font-size: 14px; color: var(--text-2); background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px 6px 12px; }
.live[hidden] { display: none; }
.live i { width: 8px; height: 8px; border-radius: 50%; background: var(--g-B); box-shadow: 0 0 0 0 color-mix(in srgb, var(--g-B) 60%, transparent); animation: pulse 2s infinite; flex: none; }
.live b { font-family: var(--font-display); color: var(--gold); font-weight: 700; display: inline-block; }
.live b.bump { animation: bump .4s ease-out; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@keyframes bump { 40% { transform: translateY(-2px); } }

.ad-key { max-width: 420px; }
.ad-stats { margin-bottom: 14px; max-width: 420px; }
.ad-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.ad-row { flex-wrap: wrap; align-items: flex-start; }
.ad-row .sem-main b { white-space: normal; }
.ad-note { font-style: italic; }
.ad-acts { display: flex; flex-wrap: wrap; gap: 6px; }
@media (max-width: 520px) { .ad-acts { width: 100%; } }
@media (max-width: 400px) {
  .top .wrap { gap: 8px; }
  .logo { font-size: 20px; }
  .navlink { padding: 8px 6px; font-size: 13.5px; }
  .top .btn-sm { padding: 0 10px; }
  .top .icon-btn { width: 34px; height: 34px; }
}

/* privacy and terms */
.legal { max-width: 760px; padding-bottom: 40px; }
.legal h2 { font-size: 18px; margin: 22px 0 6px; }
.legal h2:first-child { margin-top: 0; }
.legal p { color: var(--text-2); margin: 0 0 10px; line-height: 1.6; }
.legal a, .footer a { color: inherit; text-decoration: underline; }

/* Google's button frame is light; matching its color scheme stops the browser painting a white box behind it in dark mode */
#gbtn iframe { color-scheme: light; }

/* CAT /50 and FAT /100 shown as their scaled share of theory */
.mark .conv { font-size: 11.5px; color: var(--text-3); min-height: 1em; }