/* ── Reset & base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --brand:   #1e3a5f;
  --accent:  #1f6aa5;
  --green:   #16a34a;
  --amber:   #d97706;
  --red:     #dc2626;
  --bg:      #f1f5f9;
  --card:    #ffffff;
  --border:  #e2e8f0;
  --txt:     #1e293b;
  --txt2:    #64748b;
  --radius:  10px;
  --shadow:  0 2px 8px rgba(0,0,0,.08);
}
body { font-family: 'Segoe UI', Arial, sans-serif; background: var(--bg); color: var(--txt); min-height: 100vh; display: flex; flex-direction: column; }

/* ── Navbar ─────────────────────────────────────────────────────── */
.navbar { background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; height: 56px; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,.2); }
.navbar-brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 17px; }
.navbar-links { display: flex; align-items: center; gap: 14px; }
.navbar-user { font-size: 13px; opacity: .85; }

/* ── Buttons ────────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; text-decoration: none; transition: opacity .15s, transform .1s; }
.btn:active { transform: scale(.97); }
.btn-primary   { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: .88; }
.btn-ghost     { background: rgba(255,255,255,.15); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.25); }
.btn-success   { background: var(--green); color: #fff; }
.btn-success:hover { opacity: .88; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn:disabled  { opacity: .5; cursor: not-allowed; }

/* ── Main ───────────────────────────────────────────────────────── */
.main-content { flex: 1; padding: 28px 20px; max-width: 1100px; margin: 0 auto; width: 100%; }
.footer { background: var(--brand); color: rgba(255,255,255,.6); text-align: center; font-size: 12px; padding: 12px; }

/* ── Cards ──────────────────────────────────────────────────────── */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.card-title { font-size: 16px; font-weight: 700; color: var(--txt); margin-bottom: 4px; }
.card-subtitle { font-size: 13px; color: var(--txt2); }

/* ── Dashboard grid ─────────────────────────────────────────────── */
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.page-sub   { font-size: 14px; color: var(--txt2); margin-bottom: 24px; }
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.module-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 22px; text-decoration: none; color: var(--txt); display: flex; flex-direction: column; gap: 8px; transition: box-shadow .15s, transform .15s; }
.module-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,.12); transform: translateY(-2px); }
.module-card .mc-icon { font-size: 32px; }
.module-card .mc-name { font-weight: 700; font-size: 15px; }
.module-card .mc-desc { font-size: 12px; color: var(--txt2); }
.module-card.disabled { opacity: .5; pointer-events: none; }
.badge { display: inline-block; font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 10px; }
.badge-green { background: #dcfce7; color: #15803d; }
.badge-amber { background: #fef3c7; color: #92400e; }

/* ── Forms ──────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--txt2); margin-bottom: 5px; }
.form-control { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; background: #fff; color: var(--txt); transition: border-color .15s; }
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(31,106,165,.15); }
select.form-control { cursor: pointer; }

/* ── Result box ─────────────────────────────────────────────────── */
.result-box { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.result-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.result-row:last-child { border-bottom: none; }
.result-row.total { font-weight: 700; font-size: 16px; background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 6px; margin-top: 8px; border: none; }
.result-row.empresa { color: var(--amber); font-size: 13px; }
.val-neg { color: var(--red); font-weight: 600; }
.val-pos { color: var(--green); font-weight: 600; }
.val-emp { color: var(--amber); font-weight: 600; }

/* ── Alerts ─────────────────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.alert-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-info    { background: #dbeafe; color: #1e40af; border: 1px solid #93c5fd; }

/* ── Divider ─────────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 24px 0; }
.section-title { font-size: 13px; font-weight: 700; color: var(--txt2); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 12px; }

/* ── Legal box ──────────────────────────────────────────────────── */
.legal-box { background: #f8fafc; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; margin-top: 24px; }
.legal-box p { font-size: 12px; color: var(--txt2); margin-bottom: 4px; }
.legal-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--txt2); padding: 2px 0; }

/* ── Spinner ─────────────────────────────────────────────────────── */
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .main-content { padding: 16px 12px; }
  .module-grid { grid-template-columns: 1fr 1fr; }
  .navbar-brand span { display: none; }
}