:root {
  --bg: #eef2f9;
  --bg-2: #e4eaf4;
  --card: #ffffff;
  --card-2: #f5f8fc;
  --text: #1c2438;
  --muted: #7484a0;
  --accent: #ff9f1c;
  --accent-strong: #f5850a;
  --accent-ink: #663f00;
  --accent-2: #2ecc9b;
  --border: #e3e9f3;
  --border-strong: #d3dbe9;
  --shadow-sm: 0 1px 2px rgba(28, 36, 56, 0.05);
  --shadow: 0 8px 24px rgba(28, 36, 56, 0.07);
  --shadow-lg: 0 16px 40px rgba(28, 36, 56, 0.12);
  --ring: 0 0 0 3px rgba(255, 159, 28, 0.25);
  --rag-green: #2ecc9b;
  --rag-amber: #ff9f1c;
  --rag-red: #ff5c6c;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 18px;
  --r-pill: 999px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f131c;
    --bg-2: #151b28;
    --card: #1a2130;
    --card-2: #212a3b;
    --text: #eaf0fa;
    --muted: #9aa8c2;
    --accent: #ffab33;
    --accent-strong: #ffb84d;
    --accent-ink: #2a1c00;
    --accent-2: #34e0aa;
    --border: #2a3346;
    --border-strong: #38445c;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
    --ring: 0 0 0 3px rgba(255, 171, 51, 0.28);
    --rag-amber: #ffab33;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background:
    radial-gradient(1200px 480px at 50% -8%, var(--bg-2) 0%, transparent 60%),
    var(--bg);
  color: var(--text);
  padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.app-header {
  position: relative;
  text-align: center;
  padding: 30px 16px 16px;
  background: linear-gradient(135deg, #ffd68a 0%, #ffb0c2 48%, #9fccff 100%);
  border-radius: 0 0 28px 28px;
  box-shadow: var(--shadow);
}
.app-header-titles { text-align: center; }
.menu-btn {
  position: absolute;
  top: 18px;
  left: 14px;
  width: 44px;
  height: 44px;
  font-size: 22px;
  line-height: 1;
  color: #2b3852;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(43, 56, 82, 0.15);
  border-radius: var(--r-md);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}
.menu-btn:active { transform: scale(0.94); }
.app-header h1 {
  margin: 0;
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #2b3852;
}
.subtitle { margin: 5px 0 0; color: #45557a; font-size: 14px; font-weight: 500; }

main { width: 100%; margin: 0; padding: 16px 16px 40px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.hidden { display: none; }
h2 { font-size: 18px; font-weight: 800; letter-spacing: -0.01em; margin: 0 0 14px; }
.section-heading { font-size: 16px; font-weight: 800; margin: 22px 0 12px; }
.hint { color: var(--muted); font-size: 13px; line-height: 1.45; margin: -6px 0 12px; }

/* ---- Drawer navigation ---- */
.drawer {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: min(82vw, 320px);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  z-index: 60;
  background: var(--card);
  border-right: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  padding: 18px 12px;
}
.drawer.open { transform: translateX(0); }
.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(0, 0, 0, 0.4);
}
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  color: var(--text);
  background: transparent;
  border: none;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-item:hover { background: var(--card-2); }
.nav-item.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: var(--accent-ink);
}
.nav-ico { font-size: 19px; width: 24px; text-align: center; }
.nav-label { flex: 1; }

.view-actions { display: flex; justify-content: flex-end; margin-bottom: 14px; }

.settings-card .field { margin-bottom: 0; }
.postcode-row { display: flex; gap: 10px; }
.postcode-row input { flex: 1; }
.postcode-row .btn-secondary { flex: 0 0 auto; }
.reseed-row { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.reseed-row .btn-secondary { width: 100%; }
.reseed-row .hint { margin: 8px 0 0; }

/* ---- Buttons ---- */
.btn-primary, .btn-secondary, .btn-danger {
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--r-sm);
  cursor: pointer;
  border: 1px solid var(--border);
  transition: transform 0.12s ease, box-shadow 0.2s ease, filter 0.2s ease, background 0.2s ease;
}
.btn-primary:active, .btn-secondary:active, .btn-danger:active { transform: translateY(1px) scale(0.99); }
.btn-primary:focus-visible, .btn-secondary:focus-visible, .btn-danger:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
.btn-primary {
  color: var(--accent-ink);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(255, 159, 28, 0.32);
}
.btn-primary:hover { filter: brightness(1.03); box-shadow: 0 8px 20px rgba(255, 159, 28, 0.4); }
.btn-secondary { color: var(--text); background: var(--card-2); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--card); box-shadow: var(--shadow-sm); }
.btn-danger { color: #fff; background: var(--rag-red); border-color: transparent; box-shadow: 0 6px 16px rgba(255, 92, 108, 0.3); }
.btn-danger:hover { filter: brightness(1.03); }

/* ---- Forms ---- */
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 6px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px;
  font: inherit;
  color: var(--text);
  background: var(--card-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted); opacity: 0.7; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: var(--card);
  border-color: var(--accent);
  box-shadow: var(--ring);
}
.field textarea { resize: vertical; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .grid-2 { grid-template-columns: 1fr; } }

.checks-row { display: flex; flex-wrap: wrap; gap: 8px; }
.check-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 600;
  background: var(--card-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease;
}
.check-pill:hover { border-color: var(--accent); }
.check-pill:has(input:checked) {
  background: color-mix(in srgb, var(--accent) 16%, var(--card));
  border-color: var(--accent);
  color: var(--text);
}
.check-pill input { width: 18px; height: 18px; accent-color: var(--accent); }

.cutoff-row { display: flex; gap: 8px; margin-bottom: 8px; align-items: center; }
.cutoff-row input { flex: 1; }
.cutoff-row .remove-cutoff {
  flex: 0 0 auto;
  width: 38px; height: 38px;
  border: 1px solid var(--border-strong);
  background: var(--card-2);
  border-radius: var(--r-sm);
  cursor: pointer;
  color: var(--muted);
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
.cutoff-row .remove-cutoff:hover { color: var(--rag-red); border-color: var(--rag-red); background: var(--card); }

.form-actions { display: flex; gap: 10px; margin-top: 6px; flex-wrap: wrap; }
.form-actions .btn-primary, .form-actions .btn-secondary { flex: 1; }
.pct-preview { font-size: 14px; color: var(--muted); margin: 0 0 14px; }
.pct-preview b { color: var(--text); }

/* ---- School cards ---- */
.school-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 16px 16px 16px 20px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.school-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-strong) 100%);
}
.school-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: var(--border-strong); }
.school-card:active { transform: translateY(0); }
.school-card h3 { margin: 0 0 10px; font-size: 17px; font-weight: 800; letter-spacing: -0.01em; }
.school-meta { display: flex; flex-wrap: wrap; gap: 7px; font-size: 12.5px; color: var(--muted); }
.school-meta span {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 4px 10px;
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  white-space: nowrap;
}
.school-meta b { color: var(--text); font-weight: 700; }
.school-link {
  display: inline-flex;
  align-items: center;
  margin-top: 12px;
  padding: 7px 13px;
  font-size: 13px;
  color: var(--accent-strong);
  background: color-mix(in srgb, var(--accent) 12%, var(--card));
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border));
  border-radius: var(--r-pill);
  text-decoration: none;
  font-weight: 700;
  transition: background 0.18s ease, transform 0.12s ease;
}
.school-link:hover { background: color-mix(in srgb, var(--accent) 22%, var(--card)); }
.school-link:active { transform: scale(0.97); }

/* ---- Entries ---- */
.entry-row {
  display: flex;
  gap: 12px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 10px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.entry-row:hover { box-shadow: var(--shadow); border-color: var(--border-strong); }
.thumb { width: 64px; height: 64px; object-fit: cover; border-radius: var(--r-sm); flex-shrink: 0; background: var(--card-2); }
.entry-body { flex: 1; min-width: 0; }
.entry-body .entry-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.entry-subj { font-weight: 700; font-size: 15px; }
.entry-date { color: var(--muted); font-size: 13px; }
.entry-note { color: var(--muted); font-size: 13px; margin: 4px 0 0; }
.entry-topic { color: var(--muted); font-size: 12px; font-weight: 600; margin: 4px 0 0; }
.entry-diff { padding: 2px 9px; border-radius: var(--r-pill); font-size: 12px; font-weight: 700; }
.diff-easy { background: var(--rag-green); color: #fff; }
.diff-medium { background: var(--rag-amber); color: var(--accent-ink); }
.diff-hard { background: var(--rag-red); color: #fff; }
.score-badge {
  padding: 2px 10px;
  border-radius: var(--r-pill);
  font-weight: 700;
  font-size: 13px;
  background: var(--card-2);
  border: 1px solid var(--border-strong);
}
.entry-del {
  flex: 0 0 auto;
  border: none;
  background: none;
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
  border-radius: 8px;
  transition: color 0.18s ease, background 0.18s ease;
}
.entry-del:hover { color: var(--rag-red); background: color-mix(in srgb, var(--rag-red) 12%, transparent); }

/* ---- Progress ---- */
.chips { display: flex; gap: 8px; overflow-x: auto; padding: 2px 0 12px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex-shrink: 0;
  padding: 8px 15px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--text);
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--r-pill);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.12s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.chip:active { transform: scale(0.95); }
.chip.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: var(--accent-ink);
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(255, 159, 28, 0.35);
}
.chart-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
#chart { width: 100%; max-width: 100%; height: auto; }

/* ---- Readiness / RAG ---- */
.readiness-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.readiness-row:last-child { border-bottom: none; }
.readiness-body { flex: 1; min-width: 0; }
.readiness-name { font-weight: 700; font-size: 15px; }
.readiness-detail { color: var(--muted); font-size: 13px; }
.rag {
  padding: 4px 13px;
  border-radius: var(--r-pill);
  font-weight: 700;
  font-size: 12px;
  color: #fff;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.rag-green { background: var(--rag-green); }
.rag-amber { background: var(--rag-amber); color: var(--accent-ink); }
.rag-red { background: var(--rag-red); }
.rag-none { background: var(--card-2); color: var(--muted); border: 1px solid var(--border-strong); box-shadow: none; }

.empty { color: var(--muted); font-size: 14px; text-align: center; padding: 24px 16px; }

/* ---- Footer ---- */
.app-footer { text-align: center; color: var(--muted); font-size: 12px; padding: 12px 16px 28px; }
.backup-actions { display: flex; gap: 10px; justify-content: center; margin-bottom: 10px; }
.file-label { display: inline-flex; align-items: center; }
.footer-source { margin: 10px 0 0; font-size: 12px; color: var(--muted); }
.footer-source a { color: inherit; text-decoration: underline; }

/* ---- Update banner ---- */
.update-banner {
  position: fixed;
  left: 16px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px;
  background: linear-gradient(135deg, #262f45 0%, #1c2438 100%);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-md); box-shadow: var(--shadow-lg);
  font-size: 14px; font-weight: 500; z-index: 50;
}
.update-banner .btn-primary { flex: 0 0 auto; padding: 8px 14px; }

/* ---- Dashboard ---- */
.dash-tiles, .totals { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.stat-tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 16px;
  text-align: center;
}
.stat-num { font-size: 30px; font-weight: 800; line-height: 1; color: var(--accent-strong); }
.stat-label { font-size: 12px; color: var(--muted); margin-top: 6px; }
.rag-summary { display: flex; flex-wrap: wrap; gap: 8px; }
.dash-subhead { font-weight: 700; margin: 12px 0 6px; }
.dash-line { padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.dash-line:last-child { border-bottom: none; }

/* ---- Homework ---- */
.hw-row { border: 1px solid var(--border); border-radius: var(--r-md); background: var(--card); box-shadow: var(--shadow-sm); margin-bottom: 10px; }
.hw-body { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; }
.hw-check { padding-top: 2px; }
.hw-check input { width: 18px; height: 18px; }
.hw-main { flex: 1; min-width: 0; }
.hw-top { font-weight: 700; }
.hw-top.hw-done { text-decoration: line-through; color: var(--muted); }
.hw-meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 4px; }
.hw-row-done { opacity: 0.7; }
.section-heading.hw-overdue { color: var(--rag-red); }

/* ---- Coach ---- */
.coach-panel #coach-output { white-space: pre-wrap; line-height: 1.55; margin-top: 10px; }
.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent-strong);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Calendar ---- */
.cal-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.cal-header h2 { margin: 0; }
.cal-header .btn-secondary { padding: 6px 14px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-dow { text-align: center; font-size: 11px; font-weight: 700; color: var(--muted); padding: 4px 0; }
.cal-cell {
  min-height: 46px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  cursor: pointer;
  background: var(--card);
}
.cal-cell.cal-empty { border: none; background: transparent; cursor: default; }
.cal-num { font-size: 12px; font-weight: 600; }
.cal-today { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.cal-selected { background: var(--card-2); border-color: var(--accent-strong); }
.cal-dots { display: flex; flex-wrap: wrap; gap: 2px; margin-top: auto; }
.cal-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; background: var(--muted); }
.cal-dot-exam { background: var(--rag-red); }
.cal-dot-results { background: var(--accent-strong); }
.cal-dot-homework { background: var(--accent-2); }
.cal-dot-mock { background: #6c8cff; }
.cal-dot-custom { background: var(--muted); }