/* ============================================================
   ERP Contable — stylesheet global
   ============================================================ */

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

:root {
  --bg:          #f5f6fa;
  --surface:     #ffffff;
  --border:      #e2e5ee;
  --sidebar-bg:  #1e2235;
  --sidebar-txt: #a8afc8;
  --sidebar-act: #ffffff;
  --sidebar-acc: #4361ee;
  --topbar-h:    56px;
  --sidebar-w:   220px;
  --txt:         #1a1d2e;
  --txt-muted:   #6b7280;
  --primary:     #4361ee;
  --primary-h:   #3451d1;
  --success:     #16a34a;
  --danger:      #dc2626;
  --warn:        #d97706;
  --radius:      8px;
  --shadow:      0 1px 4px rgba(0,0,0,.08);
}

html, body { height: 100%; font-family: 'Inter', system-ui, sans-serif; font-size: 14px; color: var(--txt); background: var(--bg); }

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

/* ── Layout shell ────────────────────────────────────────── */
.shell { display: flex; height: 100%; }

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.sidebar-brand .brand-name {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.sidebar-brand .brand-sub {
  font-size: 11px;
  color: var(--sidebar-txt);
  margin-top: 2px;
}

.sidebar-nav { flex: 1; padding: 12px 0; }

.nav-section {
  padding: 16px 14px 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(168,175,200,.5);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--sidebar-txt);
  font-size: 13.5px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
  cursor: pointer;
}
.nav-item:hover { background: rgba(255,255,255,.05); color: #fff; text-decoration: none; }
.nav-item.active { background: rgba(67,97,238,.18); color: var(--sidebar-act); border-left-color: var(--sidebar-acc); }
.nav-item .icon { width: 16px; text-align: center; opacity: .75; }
.nav-item.active .icon { opacity: 1; }

/* ── Topbar ──────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-w);
  right: 0;
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 90;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-empresa {
  font-size: 13px;
  font-weight: 600;
  color: var(--txt);
}
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-user { font-size: 13px; color: var(--txt-muted); }
.topbar-user strong { color: var(--txt); }

.btn-logout {
  font-size: 12px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--txt-muted);
  background: transparent;
  cursor: pointer;
  transition: background .15s;
}
.btn-logout:hover { background: var(--bg); text-decoration: none; }

/* ── Main content ────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  margin-top: var(--topbar-h);
  flex: 1;
  padding: 28px 32px;
  min-height: calc(100vh - var(--topbar-h));
}

.page-title { font-size: 20px; font-weight: 700; margin-bottom: 24px; }
.page-title small { font-size: 13px; font-weight: 400; color: var(--txt-muted); margin-left: 8px; }

/* ── Cards / KPIs ────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.kpi::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--kpi-color, var(--primary));
}
.kpi-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .6px; color: var(--txt-muted); }
.kpi-value { font-size: 26px; font-weight: 700; margin: 6px 0 2px; color: var(--kpi-color, var(--txt)); }
.kpi-sub   { font-size: 11px; color: var(--txt-muted); }

.kpi--green  { --kpi-color: var(--success); }
.kpi--red    { --kpi-color: var(--danger);  }
.kpi--blue   { --kpi-color: var(--primary); }
.kpi--amber  { --kpi-color: var(--warn);    }

/* ── Tables ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th { background: var(--bg); padding: 10px 14px; text-align: left; font-weight: 600; font-size: 11.5px; color: var(--txt-muted); border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafbff; }

/* ── Badges ──────────────────────────────────────────────── */
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-green  { background: #dcfce7; color: #15803d; }
.badge-red    { background: #fee2e2; color: #b91c1c; }
.badge-amber  { background: #fef3c7; color: #92400e; }
.badge-blue   { background: #dbeafe; color: #1d4ed8; }
.badge-gray   { background: #f3f4f6; color: #374151; }

/* ── 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; }
.btn-primary  { background: var(--primary);   color: #fff; }
.btn-primary:hover { background: var(--primary-h); text-decoration: none; color: #fff; }
.btn-outline  { background: transparent; border: 1px solid var(--border); color: var(--txt); }
.btn-outline:hover { background: var(--bg); text-decoration: none; }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 6px; color: var(--txt); }
.form-control {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13.5px; color: var(--txt);
  background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(67,97,238,.12); }

/* ── Alert ───────────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: var(--radius); font-size: 13px; margin-bottom: 16px; }
.alert-error   { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #15803d; }

/* ── Login page ──────────────────────────────────────────── */
.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 44px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 4px 24px rgba(0,0,0,.07);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .logo-name { font-size: 18px; font-weight: 800; color: var(--txt); }
.login-logo .logo-sub  { font-size: 12px; color: var(--txt-muted); margin-top: 4px; }

/* ── Responsive helpers ──────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main    { margin-left: 0; padding: 20px 16px; }
  .topbar  { left: 0; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Nav badge (facturas pendientes) ──────────────────────── */
.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  padding: 0 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.nav-item { display: flex; align-items: center; }

/* ── Topbar company selector ──────────────────────────────── */
.topbar-empresa-sel {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--txt);
  cursor: pointer;
  max-width: 220px;
}
.topbar-empresa-sel:focus { outline: none; border-color: var(--primary); }