:root {
  --paper: #f7f5f0;
  --ink: #1e2430;
  --navy: #26344d;
  --navy-dark: #1a2438;
  --brass: #b08d57;
  --brass-light: #d9c294;
  --hairline: #dcd8cc;
  --pass: #3f6b4f;
  --fail: #a63d40;
  --warn: #a6772f;
  --mono: "SFMono-Regular", "Roboto Mono", Menlo, Consolas, monospace;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --sans: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); }
input:focus, button:focus, select:focus { outline: 2px solid var(--brass); outline-offset: 1px; }

.app { display: flex; min-height: 100vh; }
.centered { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.card { background: #fff; border: 1px solid var(--hairline); border-radius: 4px; padding: 36px 40px; max-width: 460px; width: 100%; }

.rail { width: 250px; flex-shrink: 0; background: var(--navy-dark); color: #e9e6da; display: flex; flex-direction: column; padding: 20px 14px; }
.rail-head { display: flex; align-items: center; gap: 10px; padding-bottom: 14px; margin-bottom: 10px; border-bottom: 1px solid rgba(217,194,148,0.25); }
.rail-mark { font-family: var(--serif); font-size: 26px; color: var(--brass-light); line-height: 1; }
.rail-title { font-family: var(--serif); font-size: 15px; letter-spacing: 0.3px; }
.rail-sub { font-size: 11px; color: #a8a496; margin-top: 2px; }
.session-bar { font-size: 11.5px; color: #cfcabb; padding: 8px 8px 12px; border-bottom: 1px solid rgba(217,194,148,0.25); margin-bottom: 10px; display: flex; flex-direction: column; gap: 2px; }
.session-role { color: #a8a496; font-size: 10.5px; }
.logout-link { align-self: flex-start; margin-top: 4px; background: none; border: none; color: var(--brass-light); font-size: 11px; text-decoration: underline; cursor: pointer; padding: 0; }
.rail-nav { flex: 1; overflow-y: auto; }
.rail-label { font-size: 10px; letter-spacing: 1.2px; text-transform: uppercase; color: #8c8a7d; margin: 4px 8px 8px; }
.tab-btn { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px; background: none; border: none; color: #cfcabb; text-align: left; cursor: pointer; border-radius: 3px; font-size: 13px; margin-bottom: 2px; }
.tab-btn.active { background: rgba(176,141,87,0.18); color: #fff; }
.tab-index { font-family: var(--mono); font-size: 11px; color: var(--brass-light); width: 20px; flex-shrink: 0; }
.tab-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.add-btn { width: 100%; margin-top: 6px; padding: 8px; background: none; border: 1px dashed rgba(217,194,148,0.4); color: var(--brass-light); border-radius: 3px; font-size: 12px; cursor: pointer; }
.rail-foot { border-top: 1px solid rgba(217,194,148,0.25); padding-top: 10px; margin-top: 10px; }
.save-indicator { font-size: 10px; color: #8c8a7d; margin-top: 8px; padding-left: 8px; font-style: italic; }

.main { flex: 1; padding: 32px 40px; overflow-x: auto; }
.panel { max-width: 1100px; }
h1.page-title { font-family: var(--serif); font-size: 26px; margin: 0 0 6px; color: var(--navy); }
h3.section-title { font-family: var(--serif); font-size: 15px; color: var(--navy); margin: 26px 0 10px; }
.help-text { font-size: 13px; color: #6b6a63; margin-bottom: 20px; max-width: 620px; }
.error-text { color: var(--fail); font-size: 13px; margin-bottom: 12px; }

.form-grid { display: flex; flex-direction: column; gap: 14px; max-width: 420px; }
label.field { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: #565550; }
input, select { padding: 8px 10px; border: 1px solid var(--hairline); border-radius: 3px; background: #fff; font-size: 14px; font-family: var(--sans); color: var(--ink); }
.inline-form { display: flex; gap: 8px; align-items: center; margin-bottom: 18px; flex-wrap: wrap; }

button.primary { padding: 8px 14px; background: var(--navy); color: #f2efe6; border: none; border-radius: 3px; font-size: 13px; cursor: pointer; }
button.secondary { padding: 7px 12px; background: none; color: var(--navy); border: 1px solid var(--navy); border-radius: 3px; font-size: 13px; cursor: pointer; }
button.ghost { padding: 4px 8px; background: none; border: none; color: #9a3d3d; font-size: 12px; cursor: pointer; text-decoration: underline; }
button.danger-ghost { padding: 7px 12px; background: none; color: var(--fail); border: 1px solid var(--fail); border-radius: 3px; font-size: 13px; cursor: pointer; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

table.data-table { border-collapse: collapse; width: 100%; margin-bottom: 14px; }
table.data-table th { text-align: left; font-size: 11px; letter-spacing: 0.6px; text-transform: uppercase; color: #726f63; border-bottom: 1px solid var(--hairline); padding: 8px 10px; background: #efece3; white-space: nowrap; }
table.data-table td { padding: 7px 10px; border-bottom: 1px solid var(--hairline); font-size: 13.5px; }
.cell-input { border: 1px solid transparent; background: none; font-size: 13.5px; padding: 3px 4px; width: 100%; }

.sem-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.sem-title-input { font-family: var(--serif); font-size: 24px; color: var(--navy); border: none; background: none; padding: 2px 0; display: block; }
.sem-meta-row { display: flex; gap: 8px; margin-top: 4px; align-items: center; }
.sem-meta-input { border: 1px solid var(--hairline); border-radius: 3px; padding: 4px 8px; font-size: 12px; color: #6b6a63; background: #efece3; }
.sem-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.final-toggle { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #565550; }
.badge-draft { font-size: 10px; font-weight: 700; color: #8a8778; border: 1px solid var(--hairline); border-radius: 2px; padding: 2px 6px; }
.badge-published { font-size: 10px; font-weight: 700; color: var(--pass); border: 1px solid var(--pass); border-radius: 2px; padding: 2px 6px; }

.course-bar { margin-bottom: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--hairline); }
.course-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.course-chip { display: flex; align-items: center; gap: 6px; background: #efece3; border: 1px solid var(--hairline); border-radius: 3px; padding: 4px 6px 4px 10px; font-size: 12px; }
.chip-code { font-family: var(--mono); font-weight: 600; }
.chip-credit { color: #8a8778; }
.elective-tag { font-size: 9px; letter-spacing: 0.5px; color: var(--warn); border: 1px solid var(--warn); border-radius: 2px; padding: 1px 4px; }
.entry-btn { font-size: 10px; font-family: var(--mono); background: #fff; border: 1px solid var(--hairline); border-radius: 2px; padding: 2px 5px; cursor: pointer; color: #565550; }
.chip-remove { background: none; border: none; cursor: pointer; color: #9a3d3d; font-size: 14px; line-height: 1; padding: 0 2px; }
.locked-tag { font-size: 10px; color: #565550; background: #e4e0d3; border-radius: 2px; padding: 2px 6px; }
.warning-banner { background: rgba(166,61,64,0.08); border: 1px solid var(--fail); color: var(--fail); font-size: 12.5px; padding: 8px 10px; border-radius: 3px; margin-bottom: 10px; }

.ledger-scroll { overflow-x: auto; border: 1px solid var(--hairline); border-radius: 4px; background: #fff; }
table.ledger { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.sticky-col { position: sticky; left: 0; background: #fff; z-index: 1; }
.th-sub { font-size: 9px; color: #a09d8f; text-transform: none; margin-top: 1px; }
.student-name { font-size: 13.5px; }
.student-matric { font-size: 11px; color: #8a8778; font-family: var(--mono); }
.score-cell { display: flex; align-items: center; justify-content: center; gap: 6px; }
.score-input { width: 48px; text-align: center; border: 1px solid var(--hairline); border-radius: 3px; padding: 4px 2px; font-family: var(--mono); font-size: 13px; }
.grade-tag { font-family: var(--mono); font-size: 11px; font-weight: 700; color: var(--pass); min-width: 14px; display: inline-block; }
.grade-tag.fail { color: var(--fail); }
.cgpa-cell { padding: 7px 10px; border-bottom: 1px solid var(--hairline); text-align: center; font-family: var(--mono); font-weight: 700; color: var(--navy); border-left: 2px solid var(--brass); background: rgba(176,141,87,0.06); }
.status-probation { font-size: 10.5px; font-weight: 700; color: var(--warn); border: 1px solid var(--warn); border-radius: 2px; padding: 2px 5px; }
.status-withdrawal { font-size: 10.5px; font-weight: 700; color: #fff; background: var(--fail); border-radius: 2px; padding: 2px 5px; }
.remark-pass { color: var(--pass); font-size: 12.5px; }
.remark-fail { color: var(--fail); font-size: 12.5px; font-weight: 600; }

.empty-state { max-width: 420px; margin-top: 60px; }
.empty-mark { font-family: var(--serif); font-size: 40px; color: var(--brass); }

/* documents */
.doc-page { background: #fff; border: 1px solid var(--hairline); border-radius: 4px; padding: 36px 40px; max-width: 820px; }
.doc-page.wide { max-width: 100%; }
.doc-page.narrow { max-width: 620px; }
.doc-header { text-align: center; border-bottom: 2px solid var(--navy); padding-bottom: 14px; margin-bottom: 20px; }
.doc-institution { font-family: var(--serif); font-size: 20px; color: var(--navy); letter-spacing: 0.3px; }
.doc-dept { font-size: 12.5px; color: #6b6a63; margin-top: 2px; }
.doc-title { font-size: 13px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--brass); margin-top: 10px; font-weight: 700; }
.doc-student-block { display: flex; gap: 28px; font-size: 13.5px; margin-bottom: 18px; }
.doc-semester-block { margin-bottom: 26px; }
.doc-semester-title { font-family: var(--serif); font-size: 15px; color: var(--navy); margin-bottom: 8px; }
table.doc-table { border-collapse: collapse; width: 100%; margin-bottom: 8px; font-size: 12.5px; }
table.doc-table th { text-align: left; padding: 6px 8px; background: #efece3; border-bottom: 1px solid var(--hairline); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.4px; color: #726f63; }
table.doc-table td { padding: 5px 8px; border-bottom: 1px solid var(--hairline); }
.doc-semester-summary { display: flex; gap: 20px; font-size: 13px; color: var(--ink); margin-top: 4px; }
.doc-status-flag { font-weight: 700; color: var(--fail); }
.doc-foot-note { font-size: 11px; color: #8a8778; font-style: italic; margin-top: 24px; border-top: 1px solid var(--hairline); padding-top: 10px; }
.signature-row { display: flex; gap: 40px; margin-top: 46px; flex-wrap: wrap; }
.signature-block { flex: 1; min-width: 160px; }
.signature-line { border-bottom: 1px solid var(--ink); height: 34px; }
.signature-label { font-size: 11px; color: #6b6a63; margin-top: 4px; }
.doc-sub-nav { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.doc-sub-tab { padding: 7px 12px; background: none; border: 1px solid var(--hairline); border-radius: 3px; font-size: 12.5px; cursor: pointer; color: #565550; }
.doc-sub-tab.active { background: var(--navy); color: #f2efe6; border-color: var(--navy); }
.doc-controls { display: flex; gap: 16px; align-items: flex-end; margin-bottom: 22px; flex-wrap: wrap; }

@media print {
  body * { visibility: hidden; }
  #printable-doc, #printable-doc * { visibility: visible; }
  #printable-doc { position: absolute; left: 0; top: 0; width: 100%; padding: 0; }
  .no-print { display: none !important; }
}