/* Tutor Pay — warm paper + deep teal accent, tabular numerals for money. */
:root {
  --paper: #faf7f2;
  --card: #ffffff;
  --ink: #1d1a16;
  --ink-soft: #6b6459;
  --line: #e7e0d5;
  --accent: #0f6b5f;
  --accent-soft: #e3f0ed;
  --danger: #b3423a;
  --warn-bg: #fdf3e0;
  --warn-border: #eccf9a;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(29, 26, 22, .05), 0 4px 16px rgba(29, 26, 22, .06);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
}
h1, h2, h3 { line-height: 1.2; margin: 0; }

/* ---- Header ---- */
.topbar {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  justify-content: space-between;
  padding: 18px 28px 0;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.brand { display: flex; align-items: center; gap: 12px; padding-bottom: 14px; }
.brand-mark {
  display: grid; place-items: center;
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--accent); color: #fff;
  font-weight: 700; letter-spacing: .5px;
}
.brand h1 { font-size: 19px; }
.tagline { margin: 0; font-size: 12.5px; color: var(--ink-soft); }

.tabs { display: flex; gap: 2px; }
.tab {
  border: none; background: none; cursor: pointer;
  padding: 12px 16px; font-size: 14.5px; font-weight: 600;
  color: var(--ink-soft);
  border-bottom: 3px solid transparent;
}
.tab:hover { color: var(--ink); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- Layout ---- */
main { max-width: 1080px; margin: 0 auto; padding: 24px 28px 120px; }
.panel { display: none; }
.panel.active { display: block; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px 22px; margin-bottom: 18px;
}
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 4px; }
.hint { color: var(--ink-soft); font-size: 13px; margin: 8px 0 14px; }

/* ---- Forms ---- */
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; color: var(--ink-soft); }
input, select {
  font: inherit; color: var(--ink);
  padding: 7px 10px; border: 1px solid var(--line); border-radius: 7px;
  background: #fff; min-width: 0;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.field-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: end; }
.field-col { display: flex; flex-direction: column; gap: 14px; max-width: 440px; }

.btn {
  font: inherit; font-weight: 600; cursor: pointer;
  padding: 8px 16px; border-radius: 7px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #0c574d; color: #fff; }
.btn.danger { color: var(--danger); }
.btn.danger:hover { border-color: var(--danger); }
.btn:disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }

/* ---- Editable lists ---- */
.edit-list { display: flex; flex-direction: column; gap: 10px; }
.edit-row {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: end;
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  background: #fdfcfa;
}
.edit-row label { flex: 1 1 140px; }
.edit-row .grow { flex: 2 1 220px; }
.edit-row .shrink { flex: 0 1 120px; }
.empty-note { color: var(--ink-soft); font-style: italic; padding: 8px 2px; }

/* Nested per-tutor class-rule editor */
.rules-box {
  flex: 1 1 100%;
  border-top: 1px dashed var(--line);
  margin-top: 6px; padding-top: 10px;
  display: flex; flex-direction: column; gap: 8px; align-items: flex-start;
}
.rules-head { font-size: 13px; font-weight: 700; color: var(--ink-soft); }
.rules-head .note { font-weight: 400; }
.rule-row {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: end; width: 100%;
  background: var(--accent-soft); border-radius: 8px; padding: 8px 10px;
}
.rule-row label { flex: 1 1 140px; }
.rule-row .grow { flex: 2 1 220px; }
.rule-row .shrink { flex: 0 1 130px; }

/* ---- Report ---- */
.report-summary {
  display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 18px;
}
.stat {
  flex: 1 1 150px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 18px; box-shadow: var(--shadow);
}
.stat .num { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--accent); }
.stat .lbl { font-size: 12px; text-transform: uppercase; letter-spacing: .6px; color: var(--ink-soft); }

.tutor-block { margin-bottom: 22px; }
.tutor-block h3 {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 16px; padding: 10px 4px 8px;
}
.tutor-total { font-variant-numeric: tabular-nums; color: var(--accent); }

table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); font-size: 13.5px; vertical-align: top; }
th { background: var(--accent-soft); color: var(--accent); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tfoot td { font-weight: 700; background: #fbf9f5; }
.note { display: block; color: var(--ink-soft); font-size: 12px; }
.neg { color: var(--danger) !important; }

/* Payment status pills */
.pill-paid { background: #e0f2e5; color: #1c6b34; }
.pill-unpaid { background: #fdf3e0; color: #8a5a10; }
.pill-overdue { background: #fbe4e2; color: var(--danger); font-weight: 700; }
.pill-upcoming { background: #ece9e3; color: var(--ink-soft); }
.pill-untracked { background: transparent; color: var(--ink-soft); border: 1px dashed var(--line); }

/* Student account cards (Payments tab) */
.account-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fdfcfa; padding: 14px 16px; margin-bottom: 14px;
}
.acct-head { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 10px; }
.acct-head h3 { font-size: 16px; margin-right: 4px; }
.acct-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.acct-col h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--ink-soft); margin: 0 0 6px; }
.acct-col table { box-shadow: none; }
.acct-col td { padding: 6px 8px; font-size: 13px; }
.pay-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin-top: 10px; }
.pay-form label { flex: 0 1 110px; }
.pay-form .grow { flex: 1 1 160px; }
.btn-sm { padding: 2px 8px; font-size: 12px; }
@media (max-width: 860px) { .acct-cols { grid-template-columns: 1fr; } }
.pill {
  display: inline-block; background: var(--accent-soft); color: var(--accent);
  border-radius: 999px; padding: 1px 9px; font-size: 12px; margin: 1px 3px 1px 0;
}

.warning-box {
  background: var(--warn-bg); border: 1px solid var(--warn-border);
  border-radius: 8px; padding: 10px 14px; margin-bottom: 14px; font-size: 13.5px;
}
.warning-box ul { margin: 4px 0 0 18px; padding: 0; }

/* ---- Save bar & toast ---- */
.savebar {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; gap: 14px; align-items: center; justify-content: center;
  padding: 12px; background: var(--ink); color: #fff;
  box-shadow: 0 -4px 16px rgba(0,0,0,.15);
}
.toast {
  position: fixed; bottom: 76px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; padding: 10px 20px;
  border-radius: 999px; font-weight: 600; box-shadow: var(--shadow);
}
.toast.error { background: var(--danger); }

/* ---- Table scroll on small screens ---- */
.table-wrap { overflow-x: auto; }

@media (max-width: 720px) {
  main { padding: 16px 14px 120px; }
  .topbar { padding: 14px 14px 0; }
  .tabs { overflow-x: auto; width: 100%; }
}

@media print {
  .topbar, .controls, .savebar, .toast, #report-warnings { display: none !important; }
  body { background: #fff; }
  main { padding: 0; max-width: none; }
  .card, table, .stat { box-shadow: none; }
}

/* ---- Password gate ---- */
.gate {
  position: fixed; inset: 0; z-index: 100;
  background: var(--paper);
  display: grid; place-items: center;
}
.gate[hidden] { display: none; }
.gate-card {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); padding: 36px 44px; text-align: center;
  max-width: 340px; width: calc(100% - 32px);
}
.gate-card h2 { font-size: 18px; }
.gate-card input { width: 100%; text-align: center; }
.gate-card .btn { width: 100%; }
.gate-error { color: var(--danger); font-size: 13px; font-weight: 600; margin: 0; }