* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #1e40af;
  --primary-light: #3b82f6;
  --danger: #dc2626;
  --warning: #f59e0b;
  --success: #16a34a;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* ─── NAVBAR ─── */
.navbar {
  background: var(--primary);
  color: white;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 16px; }
.nav-brand { color: white; text-decoration: none; font-weight: 700; font-size: 1.1rem; }
.tax-year-label { color: rgba(255,255,255,0.8); font-size: 0.9rem; }
.tax-year-switcher { display: flex; align-items: center; gap: 8px; margin: 0; }
.tax-year-switcher select {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 0.9rem;
  cursor: pointer;
}
.tax-year-switcher select option { color: #111; }
.import-form { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.import-hint { color: #6b7280; font-size: 0.9rem; }
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 12px; }
.alert-success { background: #ecfdf5; border: 1px solid #10b981; color: #065f46; }
.alert-error { background: #fef2f2; border: 1px solid #ef4444; color: #991b1b; }
.user-label { color: rgba(255,255,255,0.8); font-size: 0.85rem; }

/* ─── BUTTONS ─── */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.15s;
}
.btn:hover { background: #f8fafc; border-color: var(--primary-light); }
.btn-primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-light); }
.btn-danger { background: var(--danger); color: white; border-color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-edit { background: #f0f9ff; border-color: var(--primary-light); color: var(--primary); }

/* ─── LOGIN ─── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e3a5f 0%, #1e40af 100%);
}
.login-container { width: 100%; max-width: 420px; padding: 20px; }
.login-card {
  background: white;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.login-card h1 { text-align: center; margin-bottom: 4px; color: var(--primary); }
.login-card h2 { text-align: center; margin-bottom: 24px; color: var(--text-light); font-weight: 400; font-size: 1rem; }
.last-location-info { margin-bottom: 20px; text-align: center; }
.location-label { font-size: 0.9rem; color: var(--text-light); margin-bottom: 2px; }
.location-timestamp { font-size: 0.8rem; color: var(--text-light); }
.error { background: #fef2f2; color: var(--danger); padding: 10px; border-radius: var(--radius); margin-bottom: 16px; text-align: center; }

/* ─── FORMS ─── */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; margin-bottom: 4px; font-weight: 500; font-size: 0.85rem; color: var(--text-light); }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: border-color 0.15s;
}
.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.form-group input[type="checkbox"] { width: auto; margin-right: 6px; }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 120px; }
.entry-form { background: var(--card-bg); padding: 20px; border-radius: var(--radius); border: 1px solid var(--border); }

/* ─── CONTAINER ─── */
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* ─── SUMMARY GRID ─── */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary-light);
}
.card h3 { font-size: 0.85rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.card-number { font-size: 1.8rem; font-weight: 700; margin-bottom: 4px; }
.card-sub { font-size: 0.8rem; color: var(--text-light); margin-bottom: 8px; }
.card-status { font-size: 0.85rem; font-weight: 600; margin-top: 4px; }
.card-warning { border-left-color: var(--warning); }
.card-warning .card-number, .card-warning .card-status { color: var(--warning); }
.card-danger { border-left-color: var(--danger); }
.card-danger .card-number, .card-danger .card-status { color: var(--danger); }
.card-success { border-left-color: var(--success); }
.card-success .card-number, .card-success .card-status { color: var(--success); }
.card-info { border-left-color: #8b5cf6; }

.progress-bar { height: 6px; background: #e2e8f0; border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary-light); border-radius: 3px; transition: width 0.3s; }
.card-warning .progress-fill { background: var(--warning); }
.card-danger .progress-fill { background: var(--danger); }
.iom-fill { background: var(--success); }

/* ─── TABLES ─── */
.section { margin-bottom: 32px; }
.section h2 { margin-bottom: 16px; font-size: 1.2rem; }
.table-responsive { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; background: var(--card-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.data-table th { background: #f8fafc; padding: 10px 12px; text-align: left; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-light); border-bottom: 2px solid var(--border); }
.data-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.data-table a { color: var(--primary); text-decoration: none; }
.data-table a:hover { text-decoration: underline; }
.totals-row { background: #f0f9ff; }
.totals-row td { border-top: 2px solid var(--primary-light); }

/* Month table specifics */
.month-table .no-entry { background: #fafafa; }
.month-table .weekend { background: #f8fafc; }
.month-table .loc-uk td:nth-child(3) { color: var(--danger); font-weight: 600; }
.month-table .loc-iom td:nth-child(3) { color: var(--success); font-weight: 600; }
.month-table .loc-eu td:nth-child(3) { color: #7c3aed; font-weight: 600; }
.hmrc-yes { background: #fef2f2; color: var(--danger); font-weight: 600; }
.notes-cell { max-width: 200px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.empty-day { color: var(--text-light); font-style: italic; }

.month-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.month-summary { display: flex; gap: 16px; margin-top: 16px; }
.mini-card { background: var(--card-bg); padding: 12px 20px; border-radius: var(--radius); border: 1px solid var(--border); }

/* ─── MODAL ─── */
.modal {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal-content {
  background: white; border-radius: 12px; padding: 28px; width: 90%; max-width: 540px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal-content h3 { margin-bottom: 20px; }
.modal-buttons { display: flex; gap: 10px; margin-top: 16px; }

/* ─── GEO PROMPT ─── */
.geo-prompt {
  background: #eff6ff;
  border-bottom: 2px solid var(--primary-light);
  padding: 16px 24px;
}
.geo-prompt-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.geo-prompt p { margin: 0; }
.geo-buttons { display: flex; gap: 8px; }

/* ─── TAX YEAR LINKS ─── */
.tax-year-links { display: flex; gap: 8px; flex-wrap: wrap; }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .summary-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
  .form-row { flex-direction: column; }
  .navbar { flex-direction: column; align-items: flex-start; }
  .container { padding: 16px; }
}