:root {
  --primary: #1e5f8c;
  --primary-dark: #14415f;
  --bg: #f4f6f8;
  --card-bg: #ffffff;
  --border: #dde3e8;
  --text: #22303c;
  --muted: #6b7a86;
  --danger: #c0392b;
  --success: #2e7d47;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* ---------- Login ---------- */
.login-body {
  display: flex; align-items: center; justify-content: center;
  height: 100vh; background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}
.login-card {
  background: var(--card-bg); padding: 40px; border-radius: 10px;
  width: 90%; max-width: 340px; box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.login-card h1 { font-size: 20px; margin: 0 0 4px; color: var(--primary-dark); }
.login-card .subtitle { color: var(--muted); margin: 0 0 20px; font-size: 14px; }
.login-card label { display: block; font-size: 13px; margin: 12px 0 4px; color: var(--muted); }
.login-card input {
  width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
}
.login-card button {
  width: 100%; margin-top: 20px; padding: 11px; background: var(--primary); color: #fff;
  border: none; border-radius: 6px; font-size: 15px; cursor: pointer;
}
.login-card button:hover { background: var(--primary-dark); }
.login-card .error { color: var(--danger); font-size: 13px; margin-top: 10px; }
.login-card .hint { font-size: 12px; color: var(--muted); margin-top: 18px; text-align: center; }

/* ---------- Nav ---------- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--primary-dark); color: #fff; padding: 14px 24px;
}
.topbar .brand a, .topbar .brand { color: #fff; font-weight: 600; text-decoration: none; font-size: 16px; }
.nav-right { display: flex; align-items: center; gap: 16px; }
.nav-right a { color: #fff; text-decoration: underline; font-size: 14px; }
.nav-right button {
  background: transparent; border: 1px solid rgba(255,255,255,0.5); color: #fff;
  padding: 6px 14px; border-radius: 5px; cursor: pointer; font-size: 13px;
}
.nav-right button:hover { background: rgba(255,255,255,0.15); }
.hidden { display: none !important; }

/* ---------- Dashboard ---------- */
.dashboard { max-width: 900px; margin: 60px auto; padding: 0 20px; text-align: center; }
.dashboard h2 { color: var(--muted); font-weight: 400; margin-bottom: 30px; }
.cards { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 36px 30px; width: 220px; text-decoration: none; color: var(--text);
  box-shadow: 0 2px 6px rgba(0,0,0,0.05); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.1); border-color: var(--primary); }
.card h3 { margin: 0 0 8px; color: var(--primary-dark); font-size: 20px; }
.card p { margin: 0; color: var(--muted); font-size: 13px; }

/* ---------- Content / Tables ---------- */
.content { max-width: 1100px; margin: 30px auto; padding: 0 20px; }
.content-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.content-header h2 { margin: 0; color: var(--primary-dark); }
.actions button {
  background: var(--primary); color: #fff; border: none; padding: 9px 16px;
  border-radius: 6px; cursor: pointer; font-size: 14px; margin-left: 8px;
}
.actions button:hover { background: var(--primary-dark); }

.data-table { width: 100%; border-collapse: collapse; background: var(--card-bg); box-shadow: 0 1px 4px rgba(0,0,0,0.06); }
.data-table th, .data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; font-size: 13.5px; white-space: nowrap; }
.data-table th { background: var(--primary); color: #fff; font-weight: 500; }
.data-table tr:hover td { background: #f0f5f9; }
.table-scroll { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.btn-delete { background: var(--danger); color: #fff; border: none; padding: 5px 10px; border-radius: 4px; cursor: pointer; font-size: 12px; }
.btn-delete:hover { opacity: 0.85; }
.btn-edit { background: var(--primary); color: #fff; border: none; padding: 5px 10px; border-radius: 4px; cursor: pointer; font-size: 12px; }
.btn-edit:hover { background: var(--primary-dark); }

.totals-bar {
  display: flex; gap: 24px; justify-content: flex-end; margin-top: 14px;
  font-weight: 600; color: var(--primary-dark); font-size: 14px;
}

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal-content {
  background: #fff; padding: 28px; border-radius: 10px; width: 90%; max-width: 420px; max-height: 90vh; overflow-y: auto;
}
.modal-content h3 { margin-top: 0; color: var(--primary-dark); }
.modal-content label { display: block; font-size: 13px; margin: 10px 0 4px; color: var(--muted); }
.modal-content input, .modal-content select {
  width: 100%; padding: 9px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
}
.calc-preview { margin-top: 10px; padding: 8px 10px; background: #eef5fa; border-radius: 6px; font-size: 13px; color: var(--primary-dark); }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text); margin: 10px 0; cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: auto; margin: 0; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.modal-actions button { padding: 9px 16px; border-radius: 6px; border: none; cursor: pointer; font-size: 14px; }
.modal-actions button[type="submit"] { background: var(--primary); color: #fff; }
.modal-actions button[type="button"] { background: #e5e9ec; color: var(--text); }

/* ---------- Report ---------- */
.report { max-width: 900px; margin: 30px auto; padding: 0 20px 60px; background: #fff; }
.report-header { text-align: center; margin-bottom: 20px; }
.report-header h1 { color: var(--primary-dark); margin-bottom: 4px; }
.report-header p { color: var(--muted); margin: 0; }
.report-totals { margin-top: 20px; text-align: right; font-size: 14px; }
.report-totals p { margin: 4px 0; }

/* ---------- Responsive / Celulares ---------- */
@media (max-width: 640px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 10px; padding: 12px 16px; }
  .nav-right { width: 100%; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

  .dashboard { margin: 30px auto; }
  .cards { flex-direction: column; align-items: stretch; }
  .card { width: 100%; padding: 26px 20px; }

  .content { margin: 16px auto; padding: 0 12px; }
  .content-header { flex-direction: column; align-items: stretch; }
  .content-header h2 { font-size: 18px; }
  .actions { display: flex; gap: 8px; }
  .actions button { flex: 1; margin-left: 0; font-size: 13px; padding: 10px 8px; }

  .data-table th, .data-table td { padding: 8px 10px; font-size: 12.5px; }

  .totals-bar { flex-direction: column; align-items: flex-end; gap: 6px; }

  .modal-content { padding: 20px; }

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

  .report { padding: 0 12px 40px; }
  .report-totals { text-align: left; }
}

/* ---------- Print ---------- */
@media print {
  .no-print { display: none !important; }
  body { background: #fff; }
  .report { margin: 0; padding: 0; max-width: 100%; }
  .data-table th { background: #ddd !important; color: #000 !important; -webkit-print-color-adjust: exact; }
  @page { size: letter; margin: 15mm; }
}