/* AulaNotas · Azules institucionales. La impresión conserva siempre el modo claro. */
:root {
  --primary: #245fe3;
  --primary-hover: #194bc3;
  --primary-soft: #eaf1ff;
  --link: #255dcc;
  --ink: #172c50;
  --muted: #61728e;
  --teal: var(--primary);
  --teal-2: #477be3;
  --accent: #b8d9ff;
  --bg: #f2f6fd;
  --surface: #ffffff;
  --surface-2: #f5f8ff;
  --surface-3: #edf3ff;
  --line: #dce5f3;
  --ser: #19779d;
  --saber: #315fd2;
  --hacer: #5261b4;
  --decidir: #7453ad;
  --ser-bg: #e9f6fc;
  --saber-bg: #edf2ff;
  --hacer-bg: #eff0ff;
  --decidir-bg: #f3effc;
  --danger: #b63e54;
  --danger-bg: #fff1f4;
  --success: #216956;
  --success-bg: #eaf7f2;
  --warning: #855c16;
  --warning-bg: #fff7e4;
  --radius: 16px;
  --shadow: 0 8px 30px #173b7910;
}
@media screen {
  :root { color-scheme: light; }
  :root[data-theme="dark"] {
    color-scheme: dark;
    --primary: #3976ed;
    --primary-hover: #2c64d6;
    --primary-soft: #1c335a;
    --link: #a4c7ff;
    --ink: #e5edff;
    --muted: #a2b3d0;
    --teal-2: #9dc2ff;
    --bg: #0b1426;
    --surface: #131f35;
    --surface-2: #18273f;
    --surface-3: #1d2f4b;
    --line: #2a3a55;
    --ser: #7dd3fc;
    --saber: #9dbdff;
    --hacer: #b3baff;
    --decidir: #cfb7ff;
    --ser-bg: #143449;
    --saber-bg: #203451;
    --hacer-bg: #282f50;
    --decidir-bg: #322944;
    --danger: #ffa6b5;
    --danger-bg: #3d2536;
    --success: #8de0bd;
    --success-bg: #16382f;
    --warning: #f4d087;
    --warning-bg: #3a311d;
    --shadow: 0 8px 30px #00000020;
  }
  body { color: var(--ink); background: var(--bg); }
  h1 { font-family: inherit; font-size: 2.05rem; font-weight: 750; letter-spacing: -.8px; }
  h2, h3, strong { color: inherit; }
  a { color: var(--link); }
  input, select, textarea { color: var(--ink); background: var(--surface); border-color: var(--line); border-radius: 10px; }
  input:focus, select:focus, textarea:focus { border-color: var(--primary); outline: 3px solid var(--primary-soft); }
  input[readonly], textarea[readonly] { color: var(--muted); }
  :focus-visible { outline: 3px solid var(--link); outline-offset: 3px; }
  .sidebar { background: linear-gradient(175deg, #173f91, #102b65 75%); border: 0; padding: 24px 16px 18px; overflow-y: auto; }
  [data-theme="dark"] .sidebar { background: linear-gradient(175deg, #10284e, #09182f); border-right: 1px solid var(--line); }
  .sidebar .brand { color: #fff; font-size: 1.38rem; }
  .sidebar .brand small { color: #b6cff8; font-size: .65rem; letter-spacing: 1.3px; }
  .sidebar .brand-logo { width: 42px; height: 50px; border-radius: 10px; }
  .sidebar .school-caption { color: #bfd2f3; border-color: #ffffff25; font-size: .77rem; }
  .sidebar .nav-caption { color: #a9c3ee; font-size: .63rem; letter-spacing: 1.3px; }
  #main-nav { flex-shrink: 0; }
  .sidebar .nav-item { color: #d3e2fc; border-radius: 10px; padding: 11px 12px; margin-bottom: 4px; font-size: .83rem; }
  .sidebar .nav-item svg { opacity: .86; }
  .sidebar .nav-item:hover { color: #fff; background: #ffffff12; }
  .sidebar .nav-item.active { background: #ffffff20; color: #fff; box-shadow: inset 3px 0 #8fc6ff; font-weight: 650; }
  .sidebar .nav-count { background: #badcff; color: #12346b; }
  .sidebar-bottom { padding-top: 16px; }
  .sidebar .term-card { background: #ffffff0c; border: 1px solid #ffffff20; color: #fff; border-radius: 12px; }
  .sidebar .term-card span, .sidebar .term-card small { color: #b6cff8; }
  .sidebar .term-card strong { color: #fff; font-family: inherit; font-weight: 700; }
  .topbar { background: var(--surface); border-color: var(--line); height: 76px; }
  .topbar-right { gap: 12px; }
  .breadcrumb, .breadcrumb strong { color: var(--muted); }
  .breadcrumb > span:first-child { color: var(--link); font-weight: 650; }
  .user-block { border-color: var(--line); }
  .user-block strong { color: var(--ink); }
  .user-block small, .app-footer, .field-description { color: var(--muted); }
  .avatar { background: var(--primary-soft); color: var(--link); border-radius: 12px; }
  .theme-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); border-radius: 11px; padding: 8px 12px; min-height: 40px; background: var(--surface-2); color: var(--ink); font-size: .8rem; font-weight: 600; flex-shrink: 0; }
  .theme-toggle:hover { border-color: var(--primary); background: var(--primary-soft); }
  .notification-btn, .icon-btn { color: var(--muted); }
  .notification-btn:hover, .icon-btn:hover { background: var(--primary-soft); color: var(--link); }
  .logout-visible { color: var(--link); background: var(--surface-2); border-color: var(--line); }
  .btn { background: var(--surface); color: var(--link); border-color: var(--line); border-radius: 10px; font-weight: 600; transition: background .15s, border-color .15s, box-shadow .15s; }
  .btn:hover { background: var(--primary-soft); border-color: var(--primary); }
  .btn.primary { color: #fff; background: var(--primary); border-color: var(--primary); box-shadow: 0 3px 10px #1f5bd420; }
  .btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
  .btn.danger { color: var(--danger); border-color: var(--line); background: var(--surface); }
  .btn.danger:hover { background: var(--danger-bg); border-color: var(--danger); }
  .btn.text { background: transparent; border-color: transparent; }
  .btn:disabled { opacity: .5; box-shadow: none; }
  .page-heading { margin-bottom: 25px; }
  .page-heading h1 { color: var(--ink); }
  .page-heading p, .greeting-meta { color: var(--muted); }
  .dashboard-heading { position: relative; overflow: hidden; background: linear-gradient(115deg, #204cab, #276be0); border-radius: 20px; padding: 29px 30px; gap: 22px; color: #fff; }
  .dashboard-heading h1 { color: #fff; margin: 12px 0 8px; }
  .dashboard-heading p, .dashboard-heading .greeting-meta { color: #dfebff; }
  .dashboard-heading .tag { border-color: #ffffff55; color: #fff; background: #ffffff0d; }
  .dashboard-heading .btn { background: #ffffff14; border-color: #ffffff70; color: #fff; }
  .dashboard-heading .btn:hover { background: #ffffff26; }
  .dashboard-heading .btn.primary { background: #fff; border-color: #fff; color: #245dcc; }
  .dashboard-heading .btn.primary:hover { background: #ebf3ff; }
  [data-theme="dark"] .dashboard-heading { background: linear-gradient(115deg, #1a3972, #234f9c); }
  .card, .table-card, .stat-card, .course-card, .event-card, .schedule-break-summary { background: var(--surface); border-color: var(--line); box-shadow: var(--shadow); }
  .card { padding: 24px; }
  .stat-card { padding: 23px 24px; }
  .stat-card .stat-number { font-family: inherit; font-variant-numeric: tabular-nums; font-size: 2.65rem; font-weight: 750; letter-spacing: -1px; color: var(--ink); }
  .stat-icon, .date-tile { color: var(--link); background: var(--primary-soft); border-radius: 12px; }
  .date-tile strong { font-family: inherit; font-weight: 700; }
  .tag { background: var(--surface-2); border-color: var(--line); color: var(--muted); }
  .quick-start { background: var(--primary-soft); border: 1px solid var(--line); }
  .empty-state svg { color: var(--link); }
  .empty-state h3 { color: var(--ink); }
  .empty-state p, .hint, .muted { color: var(--muted); }
  .filters { background: var(--surface); padding: 17px 19px; border: 1px solid var(--line); border-radius: 14px; gap: 14px; }
  .filters label { color: var(--muted); font-size: .75rem; }
  .filters select { color: var(--ink); font-size: .85rem; }
  th { background: var(--surface-2); color: var(--muted); border-color: var(--line); font-size: .77rem; font-weight: 650; }
  td { border-color: var(--line); }
  tbody tr:hover, .table-card tbody tr:hover { background: var(--surface-2); }
  .table-card td { font-size: .84rem; }
  .badge { background: var(--surface-3); color: var(--muted); }
  .badge.blue { background: var(--saber-bg); color: var(--saber); }
  .badge.purple { background: var(--decidir-bg); color: var(--decidir); }
  .badge.success { background: var(--success-bg); color: var(--success); }
  .badge.warning { background: var(--warning-bg); color: var(--warning); }
  .info-banner { background: var(--primary-soft); color: var(--ink); border-color: var(--line); border-radius: 12px; }
  .error-banner { background: var(--danger-bg); color: var(--danger); border-color: var(--danger); }
  .success-banner { background: var(--success-bg); color: var(--success); border-color: var(--line); }
  .event-filter { background: var(--surface); color: var(--muted); border-color: var(--line); border-radius: 10px; }
  .event-filter.active { background: var(--primary-soft); color: var(--link); border-color: var(--primary); }
  .event-mini, .event-response, .criteria-guide, .course-card .actions, .form-actions { border-color: var(--line); }
  .criterion-info strong { color: var(--ink); }
  .criterion-info small, .event-details, .event-mini p { color: var(--muted); }
  .course-card { border-top: 3px solid var(--primary); padding: 22px; }
  .course-card h3 { margin: 17px 0 7px; font-size: 1.15rem; }
  .course-card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
  .course-card p { color: var(--muted); }
  .course-card .actions { gap: 7px; flex-wrap: wrap; }
  .management-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 20px; }
  .management-toolbar .search-field { max-width: 420px; width: 100%; }
  .management-toolbar .search-field input { font-size: .85rem; }
  .management-toolbar > span { white-space: nowrap; font-size: .8rem; }
  .period-card-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
  .period-card-header h2 { margin-bottom: 0; }
  .period-year-label { margin: 17px 0; font-size: .75rem; color: var(--muted); }
  .period-year-label select { max-width: 150px; }
  .period-item { padding: 17px 0; align-items: center; }
  .period-item > div:first-child { min-width: 0; }
  .period-item strong { white-space: normal; overflow-wrap: anywhere; color: var(--ink); }
  .period-item small { color: var(--muted); margin-top: 5px; }
  .period-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; flex-shrink: 0; }
  .period-actions .btn { padding: 6px 10px; font-size: .75rem; min-height: 34px; }
  .read-only-notice { display: flex; align-items: flex-start; gap: 12px; }
  .read-only-notice > svg { flex-shrink: 0; margin-top: 3px; }
  .read-only-notice strong, .read-only-notice span { display: block; }
  .read-only-notice span { margin-top: 3px; font-size: .82rem; color: var(--muted); }
  .gradebook-toolbar, .gradebook-scroll { background: var(--surface); border-color: var(--line); }
  .gradebook-toolbar strong { color: var(--ink); }
  .gradebook-table th, .gradebook-table td { border-color: var(--line); }
  .gradebook-table thead th, .gradebook-table thead tr:nth-child(2) th { background: var(--surface-2); }
  .gradebook-table .student-head, .gradebook-table .student-cell { background: var(--surface); }
  .gradebook-table .student-head { color: var(--muted); }
  .gradebook-table .criterion-head.ser { color: var(--ser); background: var(--ser-bg); }
  .gradebook-table .criterion-head.saber { color: var(--saber); background: var(--saber-bg); }
  .gradebook-table .criterion-head.hacer { color: var(--hacer); background: var(--hacer-bg); }
  .gradebook-table .criterion-head.decidir { color: var(--decidir); background: var(--decidir-bg); }
  .criterion-chip { color: var(--ser); background: var(--ser-bg); }
  .criterion-chip.saber { color: var(--saber); background: var(--saber-bg); }
  .criterion-chip.hacer { color: var(--hacer); background: var(--hacer-bg); }
  .criterion-chip.decidir { color: var(--decidir); background: var(--decidir-bg); }
  .gradebook-table .criterion-average { background: var(--surface-2); color: var(--ink); }
  .gradebook-table .final-column { background: var(--primary-soft); color: var(--ink); }
  .gradebook-table input.grade-input, .gradebook-table input.comment-input { color: var(--ink); }
  .gradebook-table input[readonly] { cursor: default; }
  .gradebook-table td input.grade-input:focus, .gradebook-table input.comment-input:focus { background: var(--primary-soft); box-shadow: inset 0 0 0 2px var(--primary); }
  .gradebook-table td input.grade-input.dirty { background: var(--warning-bg); }
  .gradebook-table td input.grade-input.invalid { background: var(--danger-bg); }
  .gradebook-table tbody tr:hover .student-cell, .gradebook-table tbody tr:hover td { background-color: var(--surface-2); }
  .gradebook-table tbody tr:hover .final-column { background: var(--primary-soft); }
  .assessment-heading button { color: var(--muted); border-radius: 5px; }
  .assessment-heading button:hover { background: var(--danger-bg); color: var(--danger); }
  .report-explanation { background: linear-gradient(150deg, #1c438e, #245dcc); }
  .report-explanation h2 { color: #fff; font-family: inherit; font-size: 1.5rem; font-weight: 650; }
  .report-explanation .eyebrow { color: #b9d7ff; }
  .report-explanation p, .report-explanation .hint { color: #d9e8ff; }
  .report-explanation .criterion-info strong { color: #fff; }
  .report-explanation .criterion-info small { color: #d9e8ff; }
  .modal, .modal-heading { background: var(--surface); color: var(--ink); border-color: var(--line); }
  .modal { border: 1px solid var(--line); border-radius: 18px; }
  .modal::backdrop { background: #081b3d80; backdrop-filter: blur(5px); }
  .toast { background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-left: 4px solid var(--primary); box-shadow: var(--shadow); }
  .toast.error { border-left-color: var(--danger); color: var(--danger); background: var(--surface); }
  .login-layout { background: var(--bg); }
  .login-story { background: radial-gradient(ellipse at 5% 90%, #285edb, transparent 65%), linear-gradient(140deg, #112e6b, #17429a); }
  .login-story .brand { color: #fff; }
  .story-content h1 { color: #fff; font-size: clamp(2.5rem, 3.5vw, 4rem); line-height: 1.12; font-weight: 750; }
  .login-story .eyebrow { color: #b7d4ff; }
  .story-content p, .story-foot { color: #d4e4ff; }
  .criteria-strip { border-color: #ffffff35; }
  .criteria-strip span { color: #d1e3ff; border: 1px solid #ffffff26; border-radius: 12px; padding: 12px; }
  .criteria-strip b { color: #fff; }
  .login-form-area { position: relative; padding-top: 78px; }
  .login-tools { position: absolute; top: 24px; right: 30px; }
  .login-card { background: var(--surface); border-color: var(--line); padding: 35px; box-shadow: var(--shadow); }
  .login-card h2 { color: var(--ink); font-family: inherit; font-weight: 750; letter-spacing: -.6px; }
  .login-card p, .login-form-area footer { color: var(--muted); }
  .login-logo { background: #fff; border-radius: 12px; padding: 5px; }
  .attendance-summary span { background: var(--surface); border-color: var(--line); color: var(--ink); }
  .timetable { background: var(--surface); }
  .timetable th { background: var(--surface-2); color: var(--muted); }
  .timetable td { border-color: var(--line); }
  .schedule-free { background: var(--surface-2) !important; color: var(--muted); }
  .schedule-break { background: var(--surface-3) !important; color: var(--muted); }
  [data-theme="dark"] .pastel-mint { background: #1c3d35 !important; color: #c0edda; }
  [data-theme="dark"] .pastel-blue { background: #20395e !important; color: #d0e4ff; }
  [data-theme="dark"] .pastel-lavender { background: #372e50 !important; color: #e0d5ff; }
  [data-theme="dark"] .pastel-peach { background: #46362d !important; color: #f8ddc6; }
  [data-theme="dark"] .pastel-rose { background: #462c3c !important; color: #f8d4e4; }
  [data-theme="dark"] .pastel-yellow { background: #423a22 !important; color: #f4e8b4; }
  [data-theme="dark"] .pastel-aqua { background: #1a3b46 !important; color: #c3e9f4; }
  [data-theme="dark"] .pastel-sage { background: #323e29 !important; color: #dfebc8; }
  .schedule-edit .btn { background: var(--surface); color: var(--ink); border-color: var(--line); }
  .schedule-color-preview { border-color: var(--line); }
  @media (max-width: 1150px) {
    .dashboard-heading { flex-wrap: wrap; }
    .topbar-right { gap: 8px; }
    .user-block > span:last-child { display: none; }
    .user-block { border: 0; padding: 0; }
  }
  @media (max-width: 800px) {
    .topbar { height: 70px; padding: 0 16px; }
    .dashboard-heading { padding: 24px; border-radius: 16px; }
    h1 { font-size: 1.8rem; }
    .login-form-area { padding: 70px 20px 30px; }
    .login-tools { top: 17px; right: 20px; }
    .login-card { padding: 27px; }
    .story-content h1 { font-size: 2.4rem; }
  }
  @media (max-width: 600px) {
    .topbar { padding: 0 12px; }
    .breadcrumb { display: none; }
    .topbar-right { margin-left: auto; gap: 8px; }
    .theme-toggle { padding: 8px 10px; min-height: 38px; }
    .user-block { display: none; }
    .dashboard-heading { padding: 21px; }
    .dashboard-heading .actions { gap: 8px; }
    .dashboard-heading .btn { font-size: .76rem; padding: 9px 11px; }
    .stat-card { padding: 18px 20px; }
    .stat-card .stat-number { font-size: 2.3rem; }
    .filters { padding: 15px; }
    .card { padding: 20px; }
    .period-item { align-items: flex-start; flex-wrap: wrap; gap: 10px; }
    .period-actions { justify-content: flex-start; }
    .management-toolbar { flex-wrap: wrap; }
    .management-toolbar .search-field { max-width: none; }
  }
}
@media print {
  .theme-toggle, .login-tools, .read-only-notice, .gradebook-search, .gradebook-foot { display: none !important; }
}

@media screen {
  .assignment-steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin: 0 0 25px; }
  .assignment-steps > div { display: grid; grid-template-columns: 30px 1fr; column-gap: 12px; padding: 16px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); }
  .assignment-steps > div > span { grid-row: 1 / 3; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; color: var(--link); background: var(--primary-soft); font-size: .85rem; font-weight: 700; }
  .assignment-steps strong { font-size: .82rem; }
  .assignment-steps small { color: var(--muted); font-size: .72rem; margin-top: 4px; }
  .course-plan-panel { margin-top: 32px; scroll-margin-top: 20px; }
  .course-plan-panel .section-heading { gap: 16px; align-items: center; flex-wrap: wrap; }
  .course-plan-panel .section-heading h2 { margin: 0; }
  .course-plan-panel .filters .checkbox-row { align-self: center; flex: 0 1 auto; font-size: .8rem; }
  .course-plan-panel td .actions { flex-wrap: wrap; gap: 6px; }
  .assignment-context { background: var(--primary-soft); color: var(--ink); border: 1px solid var(--line); padding: 13px 15px; border-radius: 10px; font-size: .85rem; margin-bottom: 0; }
  .selection-toolbar { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; font-size: .75rem; }
  .subject-check-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; max-height: 42vh; overflow-y: auto; padding: 2px; }
  .subject-check { display: flex; align-items: flex-start; gap: 11px; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); font-weight: 400; cursor: pointer; }
  .subject-check input[type="checkbox"] { flex-shrink: 0; margin: 3px 0 0; }
  .subject-check > span { min-width: 0; }
  .subject-check strong { display: block; overflow-wrap: anywhere; font-size: .82rem; line-height: 1.4; }
  .subject-check small { display: block; color: var(--muted); font-size: .7rem; margin-top: 4px; line-height: 1.4; }
  .subject-check:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
  .subject-check.already-added { opacity: .6; cursor: default; }
  .bulk-assignment-options { max-height: 42vh; overflow-y: auto; padding: 2px; }
  .assignment-course-group { border: 1px solid var(--line); border-radius: 12px; padding: 10px; margin: 0 0 13px; min-width: 0; }
  .assignment-course-group legend { color: var(--ink); font-size: .82rem; font-weight: 650; padding: 0 7px; }
  .assignment-course-group legend small { color: var(--muted); font-size: .7rem; font-weight: 400; }
  .assignment-course-group .subject-check { margin-top: 7px; }
  .subject-catalog { margin-top: 25px; }
  .subject-catalog summary { cursor: pointer; color: var(--ink); font-size: 1rem; font-weight: 650; }
  .subject-catalog summary .tag { margin-left: 10px; font-size: .72rem; }
  .subject-catalog > p { margin-top: 15px; }
  .subject-catalog-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; }
  .subject-catalog-list > div { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 10px; }
  .subject-catalog-list strong { font-size: .82rem; }
  .subject-catalog-list small { display: block; font-size: .7rem; margin-top: 4px; }
  @media (max-width: 680px) {
    .assignment-steps, .subject-catalog-list { grid-template-columns: 1fr; }
    .assignment-steps { gap: 8px; }
    .assignment-steps > div { padding: 12px 14px; }
    .course-plan-panel .section-heading .actions { width: 100%; }
    .course-plan-panel .section-heading .btn { flex: 1; font-size: .75rem; }
    .subject-check-grid { grid-template-columns: 1fr; }
  }
}