:root {
  color-scheme: light;
  --ink: #202a25;
  --muted: #68736d;
  --paper: #f5f3ec;
  --card: #fffefa;
  --line: #dcd8cc;
  --green: #1f6f50;
  --green-soft: #e4f1e9;
  --amber: #9b5e13;
  --amber-soft: #fff0d7;
  --blue-soft: #e8eff7;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); }
.site-header { display: flex; align-items: center; justify-content: space-between; max-width: 1040px; margin: auto; padding: 24px; }
.brand { color: var(--ink); font-weight: 800; font-size: 1.2rem; text-decoration: none; }
.site-header nav { display: flex; gap: 18px; margin-left: auto; margin-right: 18px; }
.site-header nav a { color: var(--ink); font-weight: 650; text-decoration: none; }
.site-header nav a:hover { color: var(--green); }
.badge { border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .78rem; padding: 6px 10px; }
.viewer-session { align-items: center; color: var(--muted); display: flex; font-size: .8rem; gap: 10px; }
.viewer-session form { margin: 0; }
.link-button { background: transparent; color: var(--green); padding: 4px; }
.link-button:hover { background: transparent; text-decoration: underline; }
.page-shell { max-width: 960px; margin: auto; padding: 40px 24px 80px; }
.page-shell.dashboard-loading { cursor: progress; opacity: .68; pointer-events: none; }
.hero { max-width: 700px; margin-bottom: 32px; }
.eyebrow { color: var(--green); font-size: .8rem; font-weight: 800; letter-spacing: .09em; margin-bottom: 8px; text-transform: uppercase; }
h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.2rem, 6vw, 4.6rem); letter-spacing: -.04em; line-height: .98; margin: 0 0 20px; }
h2 { font-size: 1.05rem; margin-top: 0; }
.hero > p:last-child { color: var(--muted); font-size: 1.08rem; line-height: 1.65; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 18px; }
label { display: grid; font-size: .9rem; font-weight: 750; gap: 8px; }
input, select, textarea { background: #fff; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); font: inherit; line-height: 1.5; padding: 12px 14px; resize: vertical; width: 100%; }
input:focus, select:focus, textarea:focus { border-color: var(--green); outline: 3px solid #1f6f5020; }
button { background: var(--green); border: 0; border-radius: 10px; color: white; cursor: pointer; font: inherit; font-weight: 800; padding: 14px 20px; }
button:hover { background: #175a40; }
button:disabled { cursor: not-allowed; opacity: .48; }
.notice.error { background: #fbe5df; border: 1px solid #e3aa9b; border-radius: 10px; padding: 14px 16px; }
.login-panel { margin: 10vh auto 0; max-width: 560px; }
.login-panel h1 { font-size: clamp(2rem, 5vw, 3.7rem); }
.google-login-button { background: var(--green); border-radius: 10px; color: white; display: inline-block; font-weight: 800; margin-top: 12px; padding: 14px 20px; text-decoration: none; }
.google-login-button:hover { background: #175a40; }
.panel { padding: 24px; }
.panel li { line-height: 1.5; margin-bottom: 9px; }
.compact h1 { font-size: clamp(2rem, 5vw, 3.7rem); }
.compact-hero { align-items: end; display: flex; justify-content: space-between; gap: 32px; max-width: none; }
.compact-hero form { flex: 0 0 auto; }
.hero-actions { align-items: stretch; display: flex; flex-direction: column; gap: 10px; }
.hero-actions form { margin: 0; }
.secondary-button { background: #fff; border: 1px solid var(--green); color: var(--green); }
.secondary-button:hover { background: var(--green-soft); }
.sync-meta { color: var(--muted); font-size: .92rem; }
.empty-state { padding: 44px 24px; text-align: center; }
.status-grid { display: grid; gap: 14px; grid-template-columns: repeat(3, 1fr); margin: 24px 0; }
.status-grid .summary-card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; color: var(--ink); display: grid; gap: 4px; padding: 20px; text-decoration: none; transition: border-color .15s, box-shadow .15s, transform .15s; }
.status-grid .summary-card:hover { border-color: var(--green); box-shadow: 0 5px 16px #1f6f5018; transform: translateY(-1px); }
.status-grid .summary-card.selected { box-shadow: 0 0 0 3px #1f6f5030; border-color: var(--green); }
.status-grid .summary-good { background: #ecfdf3; border-color: #abefc6; }
.status-grid .summary-danger { background: #fef3f2; border-color: #fecdca; }
.status-grid .summary-warning { background: var(--amber-soft); border-color: #fedf89; }
.status-grid .summary-neutral { background: #f2f4f7; border-color: #d0d5dd; }
.status-grid strong { font-size: 2rem; }
.status-grid span { color: var(--muted); }
.status-filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 4px; }
.status-reset-filter, .parent-control-filter { border-radius: 999px; display: inline-block; font-size: .9rem; font-weight: 800; padding: 9px 14px; text-decoration: none; }
.status-reset-filter { background: var(--card); border: 1px solid var(--line); color: var(--ink); }
.status-reset-filter:hover, .status-reset-filter.selected { border-color: var(--green); box-shadow: 0 0 0 2px #1f6f5020; }
.parent-control-filter { background: #fef3f2; border: 1px solid #fecdca; color: #b42318; }
.parent-control-filter:hover, .parent-control-filter.selected { border-color: #b42318; box-shadow: 0 0 0 2px #b4231820; }
.assignment-list { display: grid; gap: 14px; }
.assignment-card { background: var(--card); border: 1px solid var(--line); border-left: 5px solid var(--line); border-radius: 16px; display: flex; gap: 24px; justify-content: space-between; padding: 20px; }
.assignment-card.status-missing { border-left-color: #b42318; }
.assignment-card.status-assigned, .assignment-card.status-in_progress { border-left-color: #b54708; }
.assignment-card.status-submitted, .assignment-card.status-submitted_late { border-left-color: #175cd3; }
.assignment-card.status-returned { border-left-color: #067647; }
.assignment-card.status-verified_good { border-left-color: #067647; }
.assignment-card.status-verified_needs_attention,
.assignment-card.status-overdue,
.assignment-card.status-submitted_missing_file { border-left-color: #b42318; }
.assignment-card.status-need_do { border-left-color: #dc6803; }
.assignment-card.status-can_do { border-left-color: #f79009; }
.assignment-card.status-submitted { border-left-color: #175cd3; }
.assignment-card.status-no_submission { border-left-color: #7a5af8; }
.assignment-card.status-verified_unknown,
.assignment-card.status-unclear,
.assignment-card.status-unclassified { border-left-color: #667085; }
.assignment-main h2 { font-size: 1.2rem; margin: 3px 0 8px; }
.course-name { color: var(--green); font-weight: 700; margin: 0; }
.assignment-description { color: var(--muted); white-space: pre-line; }
.deadline-line { background: var(--amber-soft); border-radius: 8px; color: #59430b; display: inline-block; margin: 4px 0 8px; padding: 8px 10px; }
.classification-line { color: #344054; font-size: .92rem; font-weight: 700; margin: 0 0 8px; }
.classification-reason, .classification-note { color: var(--muted); font-size: .88rem; }
.classification-reason { margin-bottom: 0; }
.classification-note { margin: -8px 0 22px; }
.schedule-note { background: var(--amber-soft); border: 1px solid #fedf89; border-radius: 12px; color: #59430b; font-size: .9rem; margin: -10px 0 22px; padding: 12px 14px; }
.section-title { margin: 24px 0 12px; }
.assignment-filters { align-items: end; background: var(--card); border: 1px solid var(--line); border-radius: 16px; display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 20px 0 10px; padding: 18px; }
.assignment-filters button { min-height: 48px; }
.custom-date-range { grid-column: 1 / -1; }
.custom-date-range[hidden] { display: none; }
.range-calendar { border-top: 1px solid var(--line); padding-top: 16px; }
.calendar-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.range-calendar.calendar-collapsed .calendar-presets { margin-bottom: 0; }
.calendar-presets button { background: var(--card); border: 1px solid var(--line); color: var(--ink); min-height: auto; padding: 8px 11px; }
.calendar-presets button:hover, .calendar-presets button.selected { background: var(--green-soft); border-color: var(--green); color: var(--green); }
.range-calendar-toolbar { align-items: center; display: grid; gap: 12px; grid-template-columns: auto 1fr auto auto; }
.range-calendar-toolbar > strong { text-align: center; }
.range-calendar .calendar-reset { min-height: 48px; padding: 10px 14px; }
.calendar-body[hidden] { display: none; }
.range-calendar-months { display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 16px; }
.range-calendar-month { border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.range-calendar-month h3 { font-size: 1rem; margin: 0 0 10px; text-align: center; }
.range-calendar-grid { display: grid; gap: 4px; grid-template-columns: repeat(7, 1fr); }
.range-calendar-weekday { color: var(--muted); font-size: .72rem; font-weight: 800; padding: 5px 0; text-align: center; }
.range-calendar-grid button { background: transparent; border: 1px solid transparent; border-radius: 8px; color: var(--ink); min-height: 36px; padding: 5px; }
.range-calendar-grid button:hover { background: var(--green-soft); }
.range-calendar-grid button.today { border-color: var(--amber); font-weight: 900; }
.range-calendar-grid button.in-range { background: var(--blue-soft); border-radius: 0; }
.range-calendar-grid button.range-start, .range-calendar-grid button.range-end { background: var(--green); border-color: var(--green); border-radius: 8px; color: white; }
.range-calendar-blank { min-height: 36px; }
.calendar-body > p { color: var(--muted); font-size: .82rem; margin: 12px 0 0; }
.day-schedule-filter { background: var(--card); border: 1px solid var(--line); border-radius: 16px; margin: 12px 0 20px; padding: 16px 18px; }
.day-schedule-filter > div { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.day-schedule-filter a { background: var(--blue-soft); border: 1px solid #c7d7fe; border-radius: 999px; color: var(--ink); padding: 8px 11px; text-decoration: none; }
.day-schedule-filter a:hover, .day-schedule-filter a.selected { border-color: var(--green); box-shadow: 0 0 0 2px #1f6f5020; }
.day-schedule-filter a span { color: var(--green); font-weight: 800; }
.day-schedule-filter a.empty { background: #f2f4f1; border-color: var(--line); color: var(--muted); opacity: .62; }
.day-schedule-filter a.empty span { color: var(--muted); }
.day-schedule-filter a.empty:hover { border-color: var(--green); opacity: .9; }
.day-schedule-filter a.empty.selected { border-color: var(--green); box-shadow: 0 0 0 2px #1f6f5020; opacity: .82; }
.day-schedule-filter a.empty.selected span { color: var(--green); }
.filter-result { color: var(--muted); font-size: .9rem; margin: 0 0 18px; }
.compact-empty-state { margin-top: 14px; padding: 28px 20px; }
.pagination { align-items: center; display: flex; gap: 18px; justify-content: center; margin-top: 24px; }
.pagination a { color: var(--green); font-weight: 750; text-decoration: none; }
.pagination span { color: var(--muted); }
.calendar-arrow { align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 10px; color: var(--green); display: flex; font-size: 1.5rem; font-weight: 800; height: 48px; justify-content: center; padding: 0; text-decoration: none; width: 48px; }
.calendar-arrow:hover { background: var(--green-soft); }
.assignment-meta { color: var(--muted); font-size: .9rem; margin-bottom: 0; }
.attachment-details { color: var(--muted); font-size: .9rem; margin-top: 12px; }
.attachment-details summary { color: var(--green); cursor: pointer; font-weight: 700; }
.attachment-details ul { margin-bottom: 0; }
.assignment-actions { align-items: end; display: flex; flex-direction: column; gap: 14px; min-width: 145px; }
.status-pill { background: var(--green-soft); border-radius: 999px; font-size: .85rem; font-weight: 700; padding: 7px 11px; }
.attachment-pill { border-radius: 999px; font-size: .78rem; font-weight: 700; padding: 6px 10px; text-align: center; }
.attachment-attached { background: #ecfdf3; color: #067647; }
.attachment-other_attached { background: var(--blue-soft); color: #175cd3; }
.attachment-expected_pending { background: var(--amber-soft); color: var(--amber); }
.attachment-missing { background: #fef3f2; color: #b42318; }
.attachment-not_expected { background: #f2f4f7; color: var(--muted); }
.assignment-actions a { font-size: .9rem; }

@media (max-width: 720px) {
  .assignment-filters { grid-template-columns: 1fr; }
  .page-shell { padding-top: 20px; }
  .site-header { flex-wrap: wrap; }
  .site-header nav { margin: 14px 0 0; order: 3; width: 100%; }
  .compact-hero, .assignment-card { align-items: stretch; flex-direction: column; }
  .status-grid { grid-template-columns: repeat(2, 1fr); }
  .assignment-actions { align-items: start; }
  .range-calendar-toolbar { grid-template-columns: auto 1fr auto; }
  .range-calendar-toolbar .calendar-reset { grid-column: 1 / -1; }
  .range-calendar-months { grid-template-columns: 1fr; }
  .range-calendar-month:nth-child(2) { display: none; }
}