/* Notice Decoder. The look of a printed college circular marked with a highlighter.
   Light theme only: notices are read like paper. Mobile first. */

:root {
  color-scheme: light;
  --page: #efeef2;
  --card: #fdfdfc;
  --paper: #ffffff;
  --line: #d9d7e1;
  --text: #1d1b26;
  --muted: #55526a;
  --accent: #3d2c8d;        /* stamp-pad violet, the ink of Indian office stamps */
  --accent-hover: #2d2070;
  --accent-soft: #efecfa;
  --serif: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --red: #dc2626;
  --green: #15803d;
  --amber: #b45309;
  --radius: 12px;
}

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

html, body { margin: 0; }
body {
  background: var(--page);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 8px; top: -48px; background: var(--card); padding: 8px 12px; z-index: 10;
}
.skip-link:focus { top: 8px; }

/* Header */
.site-head { padding: 28px 0 0; }
.site-head .wrap { padding-bottom: 14px; border-bottom: 3px double var(--text); }
h1, h2, h3 { font-family: var(--serif); letter-spacing: -0.01em; text-wrap: balance; }
h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 6px; }
h2 { font-size: 1.25rem; margin: 0 0 8px; }
.lede { margin: 0; font-size: 1.05rem; }
.small { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

main.wrap { padding-top: 8px; padding-bottom: 24px; }
main > section, main > div, .card { margin-top: 16px; }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}
.hint { color: var(--muted); font-size: 14px; margin: 4px 0 10px; }
.lbl { display: block; font-weight: 600; font-size: 14px; margin: 0 0 6px; }
.error { color: var(--red); font-weight: 600; font-size: 15px; margin: 8px 0 0; }

/* Buttons and inputs */
.btn {
  min-height: 44px; padding: 10px 16px; border-radius: 10px;
  border: 1px solid #8b93a1; background: var(--card); color: var(--text);
  font: inherit; font-weight: 600; cursor: pointer;
}
.btn { border-radius: 6px; border-color: #8f8aa6; }
.btn:hover:not(:disabled) { background: var(--accent-soft); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.small { min-height: 44px; padding: 6px 12px; font-size: 14px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }

textarea, input, select {
  width: 100%; font: inherit; font-size: 16px; color: var(--text); background: var(--card);
  border: 1px solid #8f8aa6; border-radius: 6px; padding: 10px 12px;
}
textarea { min-height: 10rem; resize: vertical; }
input, select { min-height: 44px; }
[aria-invalid="true"] { border-color: var(--red); box-shadow: 0 0 0 1px var(--red); }

.samples { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; }
.samples > span { font-weight: 600; font-size: 15px; }
.sample-list { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-btn {
  min-height: 44px; padding: 8px 14px; border-radius: 8px;
  border: 1px solid #8f8aa6; background: var(--card); color: var(--text);
  font: inherit; font-size: 15px; cursor: pointer;
}
.chip-btn:hover { background: var(--accent-soft); border-color: var(--accent); }

/* Event colours: one per event, shared by its notice highlight, card and timeline bar */
.c0 { --bg-c: #fff176; --strong: #7a5d00; }
.c1 { --bg-c: #b9f5a6; --strong: #23661a; }
.c2 { --bg-c: #ffc4e1; --strong: #9c2462; }
.c3 { --bg-c: #b8e4ff; --strong: #165f91; }
.c4 { --bg-c: #ffd59c; --strong: #8c4a00; }
.c5 { --bg-c: #dccfff; --strong: #4f3a9e; }
.csaved { --bg-c: #e6e8eb; --strong: #5f6368; }

/* Warnings */
.warnings { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 8px; }
.warnings li { padding: 10px 12px; background: var(--card); border: 1px solid; border-radius: 8px; }
.warnings .warn-error { border-color: var(--red); background: #fef2f2; }
.warnings .warn-warn { border-color: var(--amber); background: #fffbeb; }
.warnings .warn-info { border-color: var(--accent); background: var(--accent-soft); }

/* Notice panel with highlighted sources */
.notice-text {
  font-family: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  white-space: pre-wrap; overflow-wrap: anywhere; font-size: 17px; line-height: 1.75;
  max-height: 28rem; overflow: auto; padding: 20px 18px 24px; border-radius: 2px; background: var(--paper);
  box-shadow: 0 1px 1px rgba(29, 27, 38, .06), 0 10px 24px -14px rgba(29, 27, 38, .35);
  scrollbar-color: #b9b2d9 transparent;
}
/* Real circulars open with NOTICE, centred and underlined. */
.notice-text::before {
  content: "NOTICE"; display: block; text-align: center; font-weight: 700; letter-spacing: .12em;
  text-decoration: underline; text-underline-offset: 4px; margin-bottom: 14px; white-space: normal;
}
@media (min-width: 640px) { .notice-text { padding: 28px 40px 32px; } }
/* The signature: a highlighter stroke with soft, slanted ends, like a marker on a printout. */
mark {
  color: var(--text); padding: 0.05em 0.25em; margin: 0 -0.1em; cursor: default;
  background: linear-gradient(100deg, transparent 0.15em, var(--bg-c) 0.3em, var(--bg-c) calc(100% - 0.3em), transparent calc(100% - 0.12em));
  border-radius: 0.3em 0.15em; -webkit-box-decoration-break: clone; box-decoration-break: clone;
  background-repeat: no-repeat; background-size: 100% 100%;
}
@media (prefers-reduced-motion: no-preference) {
  .notice-text.draw mark { animation: stroke .5s var(--ease-out) both; animation-delay: calc(var(--i, 0) * 45ms + 120ms); }
}
@media (prefers-reduced-motion: reduce) {
  .notice-text.draw mark { animation: fade .4s ease both; }
}
@keyframes stroke { from { background-size: 0% 100%; } }
@keyframes fade { from { opacity: .4; } }
mark:focus-visible { outline: 3px solid var(--strong); outline-offset: 1px; }
mark.pulse { outline: 3px solid var(--strong); outline-offset: 2px; }
@media (prefers-reduced-motion: no-preference) {
  mark.pulse { animation: pulse 0.9s ease-in-out 2; }
}
@keyframes pulse { 50% { outline-color: transparent; } }

/* Event cards */
.section-title { margin-top: 0; }
.events { display: grid; gap: 16px; grid-template-columns: 1fr; }
.ev { transition: box-shadow 0.15s ease; }
.ev.hot { box-shadow: 0 0 0 3px var(--bg-c), 0 0 0 5px var(--strong); }
.card-head {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 8px; margin-bottom: 12px;
}
/* The type word wears its event's highlighter, so card and notice read as one. */
.badge {
  display: inline-block; padding: 0.1em 0.4em; font-size: 15px; font-weight: 700; color: var(--text);
  background: linear-gradient(100deg, transparent 0.1em, var(--bg-c) 0.25em, var(--bg-c) calc(100% - 0.25em), transparent calc(100% - 0.1em));
}
.head-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.gcal { display: inline-flex; align-items: center; text-decoration: none; }
.check-line { margin: 0 0 12px; font-size: 14px; color: #78350f; font-weight: 600; }
.check-line.ok { color: var(--green); }
.check-line .confirm { margin-left: 8px; vertical-align: middle; }
.needs-check input, .needs-check select { border-color: var(--amber); box-shadow: 0 0 0 2px #fcd34d; }
.fields { display: grid; gap: 12px 10px; grid-template-columns: 1fr 1fr; }
.field { min-width: 0; }
.field.wide { grid-column: 1 / -1; }
.why { font-size: 13px; color: var(--muted); margin-top: 4px; overflow-wrap: anywhere; }
.link {
  background: none; border: 0; padding: 4px 0 4px 6px; min-height: 28px;
  color: var(--accent); font: inherit; font-size: 13px; text-decoration: underline; cursor: pointer;
}
.flags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.flags:empty { display: none; }
.chip {
  margin: 0; font-size: 13px; padding: 4px 10px; border-radius: 6px; border: 1px solid;
}
.chip-warn { border-color: var(--amber); background: #fffbeb; color: #78350f; }
.chip-info { border-color: #b9b2d9; background: var(--accent-soft); color: var(--accent-hover); }
.add-btn { width: 100%; margin-top: 12px; }
.empty { color: var(--muted); }

/* Clash timelines */
.tl-day { margin-top: 16px; }
.tl-day-title { font-size: 1rem; margin: 0 0 8px; }
.tl-scroll {
  overflow-x: auto; border: 1px solid var(--line); border-radius: 6px;
  padding: 12px 12px 0; background: var(--paper); scrollbar-color: #b9b2d9 transparent;
}
.tl-body { position: relative; min-width: calc(var(--ticks, 6) * 50px); padding-bottom: 26px; }
.tl-axis { position: relative; height: 22px; z-index: 1; }
.tl-tick {
  position: absolute; top: 0; transform: translateX(-50%);
  font-size: 12px; color: var(--muted); white-space: nowrap;
}
.tl-grid { position: absolute; top: 0; bottom: 0; width: 1px; background: var(--line); z-index: 0; }
.tl-dash { position: absolute; top: 0; bottom: 0; border-left: 2px dashed var(--red); z-index: 0; }
.tl-band { position: absolute; top: 0; bottom: 0; background: rgba(220, 38, 38, 0.14); z-index: 0; }
.tl-band-label {
  position: absolute; left: 50%; bottom: 4px; transform: translateX(-50%);
  white-space: nowrap; font-size: 12px; font-weight: 700; color: var(--red);
  background: var(--card); padding: 0 6px; border-radius: 4px;
}
.tl-row { position: relative; z-index: 1; margin-bottom: 8px; }
.tl-label { font-size: 14px; margin-bottom: 2px; overflow-wrap: anywhere; }
.tl-track { position: relative; height: 26px; }
.tl-bar {
  position: absolute; top: 3px; height: 20px; min-width: 6px; border-radius: 4px; background: var(--bg-c); box-shadow: inset 0 0 0 1px var(--strong);
}
.tl-diamond {
  position: absolute; top: 4px; width: 14px; height: 14px; border-radius: 2px;
  background: var(--red); transform: translateX(-50%) rotate(45deg);
}
.dot {
  display: inline-block; width: 10px; height: 10px; margin-right: 6px;
  border-radius: 50%; background: var(--strong); vertical-align: middle;
}

/* Clash table */
.table-wrap { overflow-x: auto; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { font-size: 14px; color: var(--muted); }
.verdict { margin: 0; }
.verdict.bad strong { color: var(--red); }
.verdict.ok strong { color: var(--green); }
.action { margin: 6px 0 0; color: var(--muted); font-size: 14px; }

/* Lists */
.plain { margin: 0; padding-left: 20px; }
.plain li { margin-bottom: 8px; }

/* Export */
.check { display: flex; align-items: center; gap: 10px; min-height: 44px; font-size: 16px; }
.check input { width: 20px; height: 20px; min-height: 20px; margin: 0; }
.status { min-height: 1.5em; margin: 12px 0 0; font-weight: 600; }
.status[data-kind="error"] { color: var(--red); }
.status[data-kind="ok"] { color: var(--green); }

.foot { color: var(--muted); font-size: 14px; padding: 16px 16px 40px; }
.foot p { border-top: 1px solid var(--line); padding-top: 14px; margin: 0; }

/* Wider phones and tablets */
@media (min-width: 520px) {
  .fields { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 820px) {
  h1 { font-size: 2.1rem; }
  .events { grid-template-columns: 1fr 1fr; }
  .site-head { padding-top: 40px; }
}

/* Browser surfaces */
::selection { background: #fff176; color: var(--text); }
textarea, input { caret-color: var(--accent); }
input[type="checkbox"] { accent-color: var(--accent); }
a, .link { text-underline-offset: 3px; }

/* Verdict line at the top of the results */
.summary { margin: 16px 0 0; padding: 12px 14px; background: var(--paper); border: 1px solid var(--line); border-radius: 8px; font-weight: 600; }
.summary a { color: var(--accent); }

/* Keep the first and last hour labels inside the box */
.tl-axis .tl-tick:first-child { transform: none; }
.tl-axis .tl-tick:last-child { transform: translateX(-100%); }

/* Header row with the install button */
.head-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
#offline-note { color: var(--amber); font-weight: 600; }

/* Class link banner: the page opened from a shared link, there is no notice text to show */
.shared-banner { border-color: var(--accent); background: var(--accent-soft); }
.shared-banner h2 { margin-bottom: 4px; }
.shared-banner .hint { margin: 0; color: var(--text); }

/* Clean events: one line each, the full card only when something needs eyes */
.row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px;
  padding: 10px 12px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; font-size: 15px;
}
.row .dot { margin-right: 0; }
.row-when { font-weight: 600; white-space: nowrap; }
.row-title { flex: 1 1 200px; min-width: 0; overflow-wrap: anywhere; }
.row-venue { color: var(--muted); }
.row-actions { display: flex; gap: 8px; margin-left: auto; }
.row-actions .link { padding: 4px 6px; font-size: 14px; }
.row .badge { font-size: 13px; }
@media (min-width: 820px) { .events .row { grid-column: 1 / -1; } }

/* Files: drop target, read status, Hindi toggle */
#input-card.drop { outline: 3px dashed var(--accent); outline-offset: -6px; background: var(--accent-soft); }
#file-status { margin: 10px 0 0; }
#file-status[data-kind="busy"] { color: var(--accent); }
#hindi-row { margin-top: 10px; font-size: 14px; }

/* Export and share */
.share-hint { margin-top: 16px; }
#gcal-note { margin: 8px 0 4px; }
#class-console { margin-top: 12px; }
#class-console-list li { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; }
.console-clash { color: #78350f; }
.console-cancelled { color: var(--muted); text-decoration: line-through; }
.join-row { align-items: stretch; }
.join-row input { flex: 1 1 220px; }
#class-section .lbl { margin-top: 16px; }
.status .link { font-size: inherit; padding-left: 4px; }
.undo { color: var(--text); }
.undo .link { padding-left: 2px; font-size: 14px; }
.fallback-copy { margin-top: 10px; font-size: 14px; }
input[type="number"] { -moz-appearance: textfield; }

/* AI check: one quiet line under the events, never in the way */
.ai-line { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; margin: 0 0 12px; }
.ai-line .status { margin: 0; flex: 1 1 260px; font-weight: 500; font-size: 14px; }
#ai-status[data-kind="busy"] { color: var(--accent); }
#ai-row { font-size: 14px; }

/* Class calendar v2: preview before publish, console, what changed */
.follow-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0 0 12px; padding: 8px 12px; border: 1px solid var(--accent); border-radius: 8px; background: var(--accent-soft); font-weight: 600; }
.preview { margin-top: 14px; padding: 14px; border: 2px solid var(--accent); border-radius: 8px; background: var(--paper); }
.preview h3 { margin: 0 0 4px; font-size: 1.05rem; }
.preview-list li { margin-bottom: 10px; }
.plan-tag { display: inline-block; min-width: 5.5em; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); text-align: center; }
.plan-add .plan-tag { border-color: var(--green); color: var(--green); }
.plan-move .plan-tag, .plan-update .plan-tag { border-color: var(--amber); color: var(--amber); }
.plan-restore .plan-tag { border-color: var(--accent); color: var(--accent); }
.plan-same { color: var(--muted); }
.changes li { margin-bottom: 6px; }
.muted { color: var(--muted); }
.console-past { opacity: .7; }
.console-what { flex: 1 1 240px; min-width: 0; overflow-wrap: anywhere; }
.console-edit { flex: 1 1 100%; display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 8px; padding: 10px; margin-top: 4px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.console-edit .actions { grid-column: 1 / -1; margin-top: 4px; }
#class-section .console-edit .lbl { margin: 0 0 4px; }
#class-manage, #class-changes-wrap { margin-top: 12px; }
#class-manage summary, #class-changes-wrap summary { cursor: pointer; font-weight: 600; min-height: 32px; }
.qr-box { margin-top: 12px; text-align: center; }
.qr-box svg { width: min(300px, 80vw); height: auto; background: #fff; padding: 8px; border-radius: 8px; border: 1px solid var(--line); }
input[type="url"] { overflow-wrap: anywhere; }
.open-link { display: inline-flex; align-items: center; text-decoration: none; }
.status[data-kind="warn"] { color: var(--amber); }
#class-console-list .link { font-size: 14px; padding: 6px 8px; min-height: 36px; }