/* ═══════════════════════════════════════════════════════
   GestiónPro Hispano — Dark Modern Theme 2026
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --bg:        #06090f;
  --bg2:       #0d1117;
  --bg3:       #161b22;
  --bg4:       #1c2128;
  --border:    rgba(255,255,255,0.07);
  --border2:   rgba(255,255,255,0.13);
  --text:      #e6edf3;
  --muted:     #8b949e;
  --muted2:    #6e7681;
  --accent:    #FF6B35;
  --accent-dk: #e55a25;
  --green:     #3fb950;
  --green-lt:  rgba(63,185,80,0.12);
  --red:       #f85149;
  --red-lt:    rgba(248,81,73,0.12);
  --yellow:    #d29922;
  --yellow-lt: rgba(210,153,34,0.12);
  --blue:      #58a6ff;
  --blue-lt:   rgba(88,166,255,0.12);
  --purple:    #bc8cff;
  --sidebar-w: 240px;
  --topbar-h:  60px;
  --radius:    10px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.6);
  --transition: all .18s ease;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; font-family:'Inter',system-ui,sans-serif; font-size:14px; color:var(--text); background:var(--bg); }
a { cursor:pointer; color:var(--accent); text-decoration:none; }
a:hover { color:var(--accent-dk); }
button { cursor:pointer; border:none; outline:none; font-family:inherit; }
input, select, textarea { font-family:inherit; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width:5px; height:5px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:rgba(255,255,255,0.12); border-radius:4px; }
::-webkit-scrollbar-thumb:hover { background:rgba(255,255,255,0.2); }

/* ══════════════════════════════════════════
   AUTH
══════════════════════════════════════════ */
.auth-page { min-height:100vh; display:flex; align-items:center; justify-content:center; position:relative; overflow:hidden; background:var(--bg); }
.auth-bg { position:absolute; inset:0; }
.auth-bg::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(255,107,53,0.08) 0%, transparent 60%),
              radial-gradient(ellipse 60% 60% at 20% 80%, rgba(88,166,255,0.05) 0%, transparent 60%);
}
.auth-bg::after {
  content:''; position:absolute; inset:0;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

.auth-container { position:relative; z-index:1; display:grid; grid-template-columns:460px 360px; gap:40px; align-items:center; padding:24px; max-width:880px; width:100%; }

.auth-card {
  background:var(--bg2); border:1px solid var(--border2); border-radius:16px;
  padding:36px; box-shadow:var(--shadow-lg);
}
.auth-logo { display:flex; align-items:center; gap:12px; margin-bottom:28px; }
.auth-logo h1 { font-size:20px; font-weight:800; color:var(--text); line-height:1; }
.auth-logo span { font-size:10px; text-transform:uppercase; letter-spacing:2px; color:var(--accent); font-weight:700; }
.logo-icon {
  width:42px; height:42px; border-radius:10px; flex-shrink:0;
  background:linear-gradient(135deg,rgba(255,107,53,0.2),rgba(255,107,53,0.1));
  border:1px solid rgba(255,107,53,0.3);
  display:flex; align-items:center; justify-content:center;
  color:var(--accent); font-size:20px; font-weight:900;
  box-shadow:0 0 20px rgba(255,107,53,0.15);
}

.auth-card h2 { font-size:20px; font-weight:800; color:var(--text); margin-bottom:4px; letter-spacing:-.01em; }
.auth-sub { color:var(--muted); margin-bottom:22px; font-size:13px; }
.auth-error { background:var(--red-lt); color:var(--red); padding:10px 14px; border-radius:8px; margin-bottom:14px; font-size:13px; border:1px solid rgba(248,81,73,0.25); }
.auth-switch { text-align:center; color:var(--muted); margin-top:18px; font-size:13px; }
.auth-switch a { color:var(--accent); font-weight:600; }
.auth-demo { text-align:center; margin-top:8px; }
.auth-demo a { font-size:12px; color:var(--muted2); transition:var(--transition); }
.auth-demo a:hover { color:var(--muted); }

.auth-features h3 { color:var(--text); font-size:17px; font-weight:700; margin-bottom:20px; }
.feature-list { display:flex; flex-direction:column; gap:14px; }
.feature-item { display:flex; align-items:flex-start; gap:14px; }
.feat-icon { font-size:20px; flex-shrink:0; margin-top:2px; }
.feature-item strong { color:var(--text); font-size:14px; display:block; margin-bottom:3px; }
.feature-item p { color:var(--muted); font-size:12px; }

/* ── Forms ── */
.form-group { margin-bottom:14px; }
.form-group label {
  display:block; font-size:11px; font-weight:700; color:var(--muted);
  margin-bottom:6px; text-transform:uppercase; letter-spacing:.7px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width:100%; padding:9px 13px;
  background:var(--bg3); border:1px solid var(--border2);
  color:var(--text); border-radius:8px; font-size:14px; transition:var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color:var(--muted2); }
.form-group select option { background:var(--bg3); color:var(--text); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline:none; border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(255,107,53,0.12);
}
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:12px; }

/* ── Buttons ── */
.btn-primary {
  background:var(--accent); color:#fff; padding:10px 18px;
  border-radius:8px; font-size:14px; font-weight:700;
  transition:var(--transition); display:inline-flex; align-items:center; gap:6px;
  box-shadow:0 0 20px rgba(255,107,53,0.25);
}
.btn-primary:hover { background:var(--accent-dk); box-shadow:0 0 30px rgba(255,107,53,0.4); transform:translateY(-1px); }
.btn-secondary {
  background:var(--bg4); color:var(--text); padding:9px 16px;
  border-radius:8px; font-size:14px; font-weight:500;
  border:1px solid var(--border2); transition:var(--transition);
}
.btn-secondary:hover { background:rgba(255,255,255,0.07); border-color:rgba(255,255,255,0.2); }
.btn-danger {
  background:var(--red-lt); color:var(--red); padding:9px 16px;
  border-radius:8px; font-size:14px; font-weight:500;
  border:1px solid rgba(248,81,73,0.2); transition:var(--transition);
}
.btn-danger:hover { background:var(--red); color:#fff; border-color:var(--red); }
.btn-success {
  background:var(--green-lt); color:var(--green); padding:9px 16px;
  border-radius:8px; font-size:14px; font-weight:500;
  border:1px solid rgba(63,185,80,0.2); transition:var(--transition);
}
.btn-success:hover { background:var(--green); color:#fff; }
.btn-ghost {
  background:transparent; color:var(--muted); padding:8px 12px;
  border-radius:8px; font-size:13px; transition:var(--transition);
}
.btn-ghost:hover { background:rgba(255,255,255,0.06); color:var(--text); }
.full-width { width:100%; justify-content:center; }

.btn-icon {
  width:30px; height:30px; border-radius:6px;
  display:inline-flex; align-items:center; justify-content:center;
  font-size:13px; transition:var(--transition);
}
.btn-icon.edit { background:var(--blue-lt); color:var(--blue); border:1px solid rgba(88,166,255,0.15); }
.btn-icon.edit:hover { background:var(--blue); color:#fff; }
.btn-icon.del { background:var(--red-lt); color:var(--red); border:1px solid rgba(248,81,73,0.15); }
.btn-icon.del:hover { background:var(--red); color:#fff; }
.btn-icon.view { background:rgba(255,255,255,0.05); color:var(--muted); border:1px solid var(--border); }
.btn-icon.view:hover { background:rgba(255,255,255,0.1); color:var(--text); }

/* ══════════════════════════════════════════
   APP LAYOUT
══════════════════════════════════════════ */
#app { display:flex; height:100vh; overflow:hidden; }

/* ── Sidebar ── */
.sidebar {
  width:var(--sidebar-w); height:100vh; background:var(--bg2);
  border-right:1px solid var(--border);
  display:flex; flex-direction:column; flex-shrink:0;
  transition:transform .3s ease; z-index:100; overflow-y:auto;
}
.sidebar-logo {
  padding:18px 16px; display:flex; align-items:center; gap:10px;
  border-bottom:1px solid var(--border);
}
.logo-icon-sm {
  width:34px; height:34px; border-radius:8px; flex-shrink:0;
  background:linear-gradient(135deg,rgba(255,107,53,0.2),rgba(255,107,53,0.08));
  border:1px solid rgba(255,107,53,0.25);
  display:flex; align-items:center; justify-content:center;
  color:var(--accent); font-size:16px; font-weight:900;
  box-shadow:0 0 14px rgba(255,107,53,0.1);
}
.logo-text strong { color:var(--text); font-size:14px; display:block; line-height:1.2; font-weight:800; }
.logo-text small { color:var(--muted2); font-size:10px; display:block; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:150px; }

.sidebar-nav { flex:1; padding:10px 8px; display:flex; flex-direction:column; gap:1px; }
.nav-section-label {
  font-size:10px; font-weight:700; color:var(--muted2);
  letter-spacing:1px; text-transform:uppercase;
  padding:12px 10px 4px; margin-top:4px;
}
.nav-item {
  display:flex; align-items:center; gap:9px; padding:8px 10px;
  border-radius:8px; color:var(--muted); font-size:13.5px; font-weight:500;
  transition:var(--transition); cursor:pointer; text-decoration:none; position:relative;
}
.nav-item:hover { background:rgba(255,255,255,0.05); color:var(--text); text-decoration:none; }
.nav-item.active {
  background:rgba(255,107,53,0.12); color:var(--accent);
  border:1px solid rgba(255,107,53,0.2); font-weight:600;
}
.nav-icon { font-size:15px; flex-shrink:0; }
.nav-badge {
  background:var(--accent); color:#fff; font-size:10px;
  font-weight:700; padding:1px 6px; border-radius:10px; margin-left:auto;
}

.sidebar-user {
  padding:14px; border-top:1px solid var(--border);
  display:flex; align-items:center; gap:10px;
}
.user-avatar {
  width:32px; height:32px; border-radius:50%; flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),rgba(255,107,53,0.4));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:13px; font-weight:800;
}
.user-info { flex:1; overflow:hidden; }
.user-info strong { color:var(--text); font-size:13px; display:block; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.user-info small { color:var(--muted2); font-size:11px; }
.btn-logout {
  background:rgba(255,255,255,0.05); color:var(--muted2);
  width:28px; height:28px; border-radius:6px; font-size:13px; flex-shrink:0;
  border:1px solid var(--border); transition:var(--transition);
}
.btn-logout:hover { background:var(--red-lt); color:var(--red); border-color:rgba(248,81,73,0.3); }

.sidebar-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.7); z-index:99; }

/* ── Main content ── */
.main-content { flex:1; display:flex; flex-direction:column; overflow:hidden; background:var(--bg); }

.topbar {
  height:var(--topbar-h); background:var(--bg2);
  border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
  padding:0 22px; flex-shrink:0; gap:16px;
}
.topbar-left { display:flex; align-items:center; gap:12px; }
.btn-menu { background:none; color:var(--muted); font-size:18px; padding:4px 6px; border-radius:6px; display:none; }
.btn-menu:hover { background:rgba(255,255,255,0.06); color:var(--text); }
.page-title-area h2 { font-size:16px; font-weight:700; color:var(--text); letter-spacing:-.01em; }
.page-subtitle { font-size:12px; color:var(--muted2); display:block; margin-top:1px; }
.topbar-right { display:flex; align-items:center; gap:10px; }

.btn-new {
  background:var(--accent); color:#fff; padding:7px 14px;
  border-radius:7px; font-size:13px; font-weight:700;
  display:flex; align-items:center; gap:5px; transition:var(--transition);
  white-space:nowrap; box-shadow:0 0 16px rgba(255,107,53,0.25);
}
.btn-new:hover { background:var(--accent-dk); box-shadow:0 0 24px rgba(255,107,53,0.4); transform:translateY(-1px); }
.notification-btn {
  position:relative; width:34px; height:34px;
  background:rgba(255,255,255,0.05); border:1px solid var(--border);
  border-radius:7px; display:flex; align-items:center; justify-content:center;
  cursor:pointer; font-size:15px; transition:var(--transition);
}
.notification-btn:hover { background:rgba(255,255,255,0.08); }
.notif-count {
  position:absolute; top:-4px; right:-4px;
  background:var(--red); color:#fff; font-size:9px; font-weight:700;
  min-width:15px; height:15px; border-radius:8px;
  display:flex; align-items:center; justify-content:center; padding:0 3px;
}

.page-content { flex:1; overflow-y:auto; padding:22px; }

/* ══════════════════════════════════════════
   CARDS & GRIDS
══════════════════════════════════════════ */
.card {
  background:var(--bg2); border-radius:var(--radius);
  border:1px solid var(--border);
}
.card-header {
  padding:14px 18px; border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.card-header h3 { font-size:14px; font-weight:700; color:var(--text); }
.card-body { padding:18px; }

/* KPI cards */
.kpi-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:14px; margin-bottom:20px; }
.kpi-card {
  background:var(--bg2); border-radius:var(--radius);
  padding:18px; border:1px solid var(--border);
  position:relative; overflow:hidden; transition:var(--transition);
}
.kpi-card:hover { border-color:var(--border2); transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,.3); }
.kpi-card::before { content:''; position:absolute; top:0; left:0; right:0; height:2px; }
.kpi-card.blue::before   { background:linear-gradient(90deg,var(--blue),#1f6feb); }
.kpi-card.green::before  { background:linear-gradient(90deg,var(--green),#238636); }
.kpi-card.orange::before { background:linear-gradient(90deg,var(--accent),#e85d04); }
.kpi-card.red::before    { background:linear-gradient(90deg,var(--red),#b91c1c); }
.kpi-card.purple::before { background:linear-gradient(90deg,var(--purple),#7c3aed); }
.kpi-card.teal::before   { background:linear-gradient(90deg,#2dd4bf,#0891b2); }

.kpi-label { font-size:11px; font-weight:700; color:var(--muted2); text-transform:uppercase; letter-spacing:.7px; margin-bottom:8px; }
.kpi-value { font-size:24px; font-weight:900; color:var(--text); line-height:1; margin-bottom:6px; letter-spacing:-.02em; }
.kpi-sub   { font-size:12px; color:var(--muted); }
.kpi-icon  { position:absolute; right:14px; top:14px; font-size:26px; opacity:.08; }
.kpi-trend { display:inline-flex; align-items:center; gap:3px; font-size:11px; font-weight:700; padding:2px 7px; border-radius:10px; }
.kpi-trend.up   { color:var(--green); background:var(--green-lt); }
.kpi-trend.down { color:var(--red);   background:var(--red-lt); }

/* Charts grid */
.charts-grid { display:grid; grid-template-columns:2fr 1fr; gap:14px; margin-bottom:20px; }
.chart-card { background:var(--bg2); border-radius:var(--radius); border:1px solid var(--border); padding:18px; }
.chart-title { font-size:13px; font-weight:700; color:var(--text); margin-bottom:14px; display:flex; align-items:center; justify-content:space-between; }

/* ══════════════════════════════════════════
   TABLES
══════════════════════════════════════════ */
.table-container { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
thead th {
  background:var(--bg3); padding:9px 13px; text-align:left;
  font-size:10.5px; font-weight:700; color:var(--muted2);
  text-transform:uppercase; letter-spacing:.6px;
  border-bottom:1px solid var(--border); white-space:nowrap;
}
tbody td { padding:11px 13px; border-bottom:1px solid var(--border); font-size:13px; color:var(--muted); }
tbody td strong { color:var(--text); }
tbody tr:last-child td { border-bottom:none; }
tbody tr:hover td { background:rgba(255,255,255,0.025); color:var(--text); }
.td-actions { display:flex; align-items:center; gap:5px; }

/* ══════════════════════════════════════════
   BADGES / STATUS
══════════════════════════════════════════ */
.badge { display:inline-flex; align-items:center; padding:3px 9px; border-radius:20px; font-size:11px; font-weight:700; white-space:nowrap; }
.badge-success { background:var(--green-lt); color:var(--green); border:1px solid rgba(63,185,80,0.2); }
.badge-danger  { background:var(--red-lt);   color:var(--red);   border:1px solid rgba(248,81,73,0.2); }
.badge-warning { background:var(--yellow-lt); color:var(--yellow); border:1px solid rgba(210,153,34,0.2); }
.badge-primary { background:var(--blue-lt);  color:var(--blue);  border:1px solid rgba(88,166,255,0.2); }
.badge-gray    { background:rgba(255,255,255,0.06); color:var(--muted); border:1px solid var(--border); }

/* ══════════════════════════════════════════
   SEARCH & FILTERS
══════════════════════════════════════════ */
.toolbar { display:flex; align-items:center; gap:10px; margin-bottom:14px; flex-wrap:wrap; }
.search-box { position:relative; flex:1; min-width:200px; }
.search-box input {
  width:100%; padding:8px 13px 8px 36px;
  background:var(--bg3); border:1px solid var(--border2); color:var(--text);
  border-radius:8px; font-size:13px; transition:var(--transition);
}
.search-box input::placeholder { color:var(--muted2); }
.search-box input:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(255,107,53,0.1); }
.search-box::before { content:'🔍'; position:absolute; left:10px; top:50%; transform:translateY(-50%); font-size:12px; pointer-events:none; }
.filter-select {
  padding:8px 11px; background:var(--bg3); border:1px solid var(--border2);
  color:var(--text); border-radius:8px; font-size:13px; cursor:pointer; transition:var(--transition);
}
.filter-select:focus { outline:none; border-color:var(--accent); }

/* ══════════════════════════════════════════
   MODAL
══════════════════════════════════════════ */
.modal-backdrop { position:fixed; inset:0; background:rgba(0,0,0,.75); z-index:200; backdrop-filter:blur(4px); }
.modal {
  position:fixed; top:50%; left:50%; transform:translate(-50%,-50%);
  z-index:201; background:var(--bg2); border:1px solid var(--border2);
  border-radius:14px; box-shadow:var(--shadow-lg);
  width:90%; max-width:580px; max-height:85vh;
  display:flex; flex-direction:column; overflow:hidden;
}
.modal-lg { max-width:780px; }
.modal-header { padding:16px 20px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; flex-shrink:0; }
.modal-header h3 { font-size:15px; font-weight:700; color:var(--text); }
.modal-close { background:rgba(255,255,255,0.07); color:var(--muted); width:28px; height:28px; border-radius:6px; font-size:12px; border:1px solid var(--border); transition:var(--transition); }
.modal-close:hover { background:var(--red-lt); color:var(--red); border-color:rgba(248,81,73,0.3); }
.modal-body { padding:20px; overflow-y:auto; flex:1; }
.modal-footer { padding:14px 20px; border-top:1px solid var(--border); display:flex; align-items:center; justify-content:flex-end; gap:8px; flex-shrink:0; }

/* ══════════════════════════════════════════
   TOAST NOTIFICATIONS
══════════════════════════════════════════ */
.toast-container { position:fixed; bottom:22px; right:22px; z-index:300; display:flex; flex-direction:column; gap:8px; }
.toast {
  background:var(--bg3); color:var(--text); padding:12px 16px;
  border-radius:10px; font-size:13px; font-weight:500;
  box-shadow:var(--shadow-lg); display:flex; align-items:center; gap:10px;
  animation:slideIn .25s ease; max-width:320px;
  border:1px solid var(--border2);
}
.toast.success { background:rgba(63,185,80,0.15); border-color:rgba(63,185,80,0.3); color:var(--green); }
.toast.error   { background:rgba(248,81,73,0.15);  border-color:rgba(248,81,73,0.3);  color:var(--red); }
.toast.warning { background:rgba(210,153,34,0.15); border-color:rgba(210,153,34,0.3); color:var(--yellow); }
@keyframes slideIn { from{opacity:0;transform:translateX(24px)} to{opacity:1;transform:translateX(0)} }

/* ══════════════════════════════════════════
   EMPTY STATE
══════════════════════════════════════════ */
.empty-state { text-align:center; padding:60px 24px; }
.empty-state .empty-icon { font-size:44px; margin-bottom:14px; opacity:.5; }
.empty-state h3 { font-size:15px; font-weight:600; color:var(--text); margin-bottom:8px; }
.empty-state p { font-size:13px; color:var(--muted); margin-bottom:20px; }

/* ══════════════════════════════════════════
   INVOICE PRINT VIEW
══════════════════════════════════════════ */
.invoice-preview { background:var(--bg2); padding:36px; border-radius:10px; max-width:700px; border:1px solid var(--border); }
.invoice-header { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:32px; }
.invoice-logo-area h2 { font-size:22px; font-weight:900; color:var(--accent); }
.invoice-meta { text-align:right; }
.invoice-meta .inv-num { font-size:20px; font-weight:800; color:var(--text); }
.inv-info-grid { display:grid; grid-template-columns:1fr 1fr; gap:22px; margin-bottom:24px; }
.inv-info-block h4 { font-size:10px; text-transform:uppercase; letter-spacing:1px; color:var(--muted2); font-weight:700; margin-bottom:8px; }
.inv-info-block p, .inv-info-block span { color:var(--muted); font-size:13px; }
.inv-items-table { width:100%; border-collapse:collapse; margin-bottom:18px; }
.inv-items-table th { background:rgba(255,107,53,0.1); color:var(--accent); padding:9px 13px; text-align:left; font-size:11px; font-weight:700; border:1px solid rgba(255,107,53,0.15); }
.inv-items-table td { padding:9px 13px; border-bottom:1px solid var(--border); font-size:13px; color:var(--muted); }
.inv-totals { max-width:260px; margin-left:auto; }
.inv-total-row { display:flex; justify-content:space-between; padding:5px 0; font-size:13px; color:var(--muted); }
.inv-total-row.final { font-weight:800; font-size:15px; color:var(--text); border-top:1px solid var(--border2); padding-top:10px; margin-top:6px; }

/* ══════════════════════════════════════════
   LOADING
══════════════════════════════════════════ */
.loading { display:flex; align-items:center; justify-content:center; padding:48px; }
.spinner { width:32px; height:32px; border:2px solid var(--border2); border-top-color:var(--accent); border-radius:50%; animation:spin .7s linear infinite; }
@keyframes spin { to{transform:rotate(360deg)} }

/* ══════════════════════════════════════════
   NOMINA
══════════════════════════════════════════ */
.nomina-summary { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-bottom:20px; }
.nomina-card { background:var(--bg2); border-radius:var(--radius); padding:18px; border:1px solid var(--border); text-align:center; }
.nomina-card .nc-value { font-size:26px; font-weight:900; color:var(--text); margin:8px 0 4px; letter-spacing:-.02em; }
.nomina-card .nc-label { font-size:11px; color:var(--muted2); text-transform:uppercase; letter-spacing:.5px; font-weight:700; }

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media(max-width:900px) {
  .auth-container { grid-template-columns:1fr; max-width:440px; }
  .auth-features { display:none; }
  .sidebar { position:fixed; top:0; left:0; transform:translateX(-100%); }
  .sidebar.open { transform:translateX(0); }
  .sidebar-overlay.show { display:block; }
  .btn-menu { display:flex !important; }
  .kpi-grid { grid-template-columns:repeat(2,1fr); }
  .charts-grid { grid-template-columns:1fr; }
  .nomina-summary { grid-template-columns:1fr; }
}
@media(max-width:580px) {
  .kpi-grid { grid-template-columns:1fr; }
  .page-content { padding:14px; }
  .topbar { padding:0 14px; }
  .form-row { grid-template-columns:1fr; }
  .modal { width:96%; }
}

/* ══════════════════════════════════════════
   UTILITIES
══════════════════════════════════════════ */
.text-right   { text-align:right; }
.text-center  { text-align:center; }
.text-muted   { color:var(--muted); }
.text-sm      { font-size:12px; }
.fw-600       { font-weight:600; }
.fw-700       { font-weight:700; }
.color-green  { color:var(--green); }
.color-red    { color:var(--red); }
.color-accent { color:var(--accent); }
.color-blue   { color:var(--blue); }
.mt-16 { margin-top:16px; }
.mb-16 { margin-bottom:16px; }
.gap-8 { gap:8px; }
.flex  { display:flex; }
.flex-center { display:flex; align-items:center; justify-content:center; }
.align-center { align-items:center; }
.divider { height:1px; background:var(--border); margin:14px 0; }
.two-col   { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.three-col { display:grid; grid-template-columns:1fr 1fr 1fr; gap:20px; }