:root {
  --navy-900: #0c1b38;
  --navy-800: #142040;
  --navy-700: #1e3060;
  --navy-600: #274080;
  --navy-500: #2d5091;
  --accent: #4a7fcb;
  --accent-light: #6fa0e0;
  --white: #ffffff;
  --bg: #eef1f7;
  --card: #ffffff;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #d1d9ed;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Nav ──────────────────────────────────────────────────────────────────── */
.nav {
  background: var(--navy-800);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  color: rgba(255,255,255,.75);
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  transition: background .15s, color .15s;
}
.nav-links a:hover, .nav-links a.active {
  background: rgba(255,255,255,.12);
  color: var(--white);
  text-decoration: none;
}

.btn-nav-logout {
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.85);
  border: 1px solid rgba(255,255,255,.2);
  padding: 5px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  cursor: pointer;
  transition: background .15s;
}
.btn-nav-logout:hover { background: rgba(255,255,255,.2); color: var(--white); }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background .15s, box-shadow .15s;
  line-height: 1.4;
}
.btn-primary {
  background: var(--navy-600);
  color: var(--white);
}
.btn-primary:hover { background: var(--navy-700); }

.btn-accent {
  background: var(--accent);
  color: var(--white);
}
.btn-accent:hover { background: var(--accent-light); }

.btn-outline {
  background: transparent;
  color: var(--navy-600);
  border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--bg); }

.btn-danger {
  background: var(--danger);
  color: var(--white);
}
.btn-danger:hover { background: var(--danger-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 5px 12px;
  font-size: 12px;
}
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

/* ── Card ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy-800);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.card-body { padding: 0; }

/* ── Forms ────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .4px;
  margin-bottom: 5px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(74,127,203,.15);
}
textarea.form-control { resize: vertical; min-height: 72px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
}
thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  padding: 10px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(74,127,203,.04); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
}
.badge-danger { background: #fef2f2; color: var(--danger); }
.badge-warning { background: #fffbeb; color: var(--warning); }
.badge-navy { background: #eff4ff; color: var(--navy-600); }

/* ── Modal ────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--white);
  border-radius: 10px;
  width: 100%;
  max-width: 560px;
  box-shadow: var(--shadow-md);
  transform: translateY(12px);
  transition: transform .2s;
}
.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-size: 16px; font-weight: 600; color: var(--navy-800); }

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
}
.modal-close:hover { background: var(--bg); color: var(--text); }

.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ── Alert ────────────────────────────────────────────────────────────────── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 16px;
}
.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }

/* ── Login page ───────────────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--white);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}
.login-logo-icon {
  width: 52px;
  height: 52px;
  background: var(--navy-700);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}
.login-logo-icon svg { fill: var(--white); }
.login-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy-800);
  margin-bottom: 4px;
}
.login-sub { font-size: 13px; color: var(--text-muted); }

.login-btn {
  width: 100%;
  padding: 10px;
  background: var(--navy-700);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
  margin-top: 4px;
}
.login-btn:hover { background: var(--navy-800); }

/* ── Dashboard ────────────────────────────────────────────────────────────── */
.page-content { padding: 24px; max-width: 1200px; margin: 0 auto; }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 800px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

.birthday-list { list-style: none; }
.birthday-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}
.birthday-item:last-child { border-bottom: none; }
.birthday-item:hover { background: rgba(74,127,203,.04); }

.birthday-rank {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--navy-700);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.birthday-rank.soon { background: var(--accent); }

.birthday-info { flex: 1; }
.birthday-name { font-weight: 600; font-size: 14px; color: var(--text); }
.birthday-meta { font-size: 12px; color: var(--text-muted); margin-top: 1px; }

.birthday-days {
  text-align: right;
  flex-shrink: 0;
}
.birthday-days-count { font-size: 18px; font-weight: 700; color: var(--navy-600); }
.birthday-days-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .4px; }

.empty-state {
  padding: 32px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* ── People page ──────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-title { font-size: 20px; font-weight: 700; color: var(--navy-800); }

.actions-cell { display: flex; gap: 6px; }

/* ── Mobile ───────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Nav */
  .nav {
    height: auto;
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .nav-brand { font-size: 15px; }
  .nav-links { gap: 2px; }
  .nav-links a { padding: 5px 10px; font-size: 12px; }
  .btn-nav-logout { padding: 5px 10px; font-size: 12px; }

  /* Page */
  .page-content { padding: 12px; }
  .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .page-header .btn { width: 100%; justify-content: center; }

  /* Dashboard */
  .dashboard-grid { gap: 12px; }
  .birthday-item { padding: 12px 14px; gap: 10px; }
  .birthday-rank { width: 24px; height: 24px; font-size: 11px; }
  .birthday-days-count { font-size: 15px; }

  /* Tables — hide less critical columns on mobile */
  .people-col-address,
  .people-col-parent { display: none; }

  thead th { padding: 8px 10px; font-size: 10px; }
  tbody td { padding: 10px; font-size: 13px; }
  .actions-cell { flex-direction: column; gap: 4px; }
  .actions-cell .btn { font-size: 11px; padding: 4px 8px; }

  /* Card */
  .card-header { padding: 12px 14px; }
  .card-title { font-size: 12px; }

  /* Modal — slide up from bottom */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }
  .modal {
    border-radius: 14px 14px 0 0;
    max-height: 92vh;
    overflow-y: auto;
    max-width: 100%;
  }
  .modal-header { padding: 16px 18px; }
  .modal-body { padding: 16px 18px; }
  .modal-footer { padding: 12px 18px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-group { margin-bottom: 14px; }
  .form-control { font-size: 16px; } /* prevents iOS zoom on focus */

  /* Confirm box */
  .confirm-box { padding: 22px 18px; }

  /* Login */
  .login-card { padding: 28px 22px; }
}

/* Confirm dialog */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s;
}
.confirm-overlay.open { opacity: 1; pointer-events: all; }
.confirm-box {
  background: var(--white);
  border-radius: 10px;
  padding: 28px;
  max-width: 360px;
  width: 100%;
  box-shadow: var(--shadow-md);
}
.confirm-box h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: var(--navy-800); }
.confirm-box p { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.confirm-actions { display: flex; justify-content: flex-end; gap: 8px; }