:root {
  --bg:        #f0f2f5;
  --surface:   #ffffff;
  --surface2:  #f8f9fb;
  --border:    #e4e7ec;
  --text:      #1a1d23;
  --text2:     #5a6172;
  --text3:     #9299a8;
  --accent:    #2563eb;
  --accent-lt: #eff4ff;
  --green:     #16a34a;
  --green-lt:  #f0fdf4;
  --red:       #dc2626;
  --red-lt:    #fef2f2;
  --amber:     #d97706;
  --amber-lt:  #fffbeb;
  --cyan:      #0891b2;
  --cyan-lt:   #ecfeff;
  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.06);
}

[data-theme="dark"] {
  --bg:        #0f1117;
  --surface:   #1a1d27;
  --surface2:  #222533;
  --border:    #2e3347;
  --text:      #e8eaf0;
  --text2:     #9299b8;
  --text3:     #5a6180;
  --accent:    #4f80ff;
  --accent-lt: #1a2340;
  --green:     #22c55e;
  --green-lt:  #0d2818;
  --red:       #f87171;
  --red-lt:    #2d1010;
  --amber:     #fbbf24;
  --amber-lt:  #2d1f05;
  --cyan:      #22d3ee;
  --cyan-lt:   #082030;
  --shadow:    0 1px 3px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
}

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

body { transition: background .25s, color .25s; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── TOPBAR ── */
.topbar {
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(37,99,235,0.3);
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.topbar-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.15);
  border-radius: 10px;
  font-size: 20px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
}
.topbar-name {
  font-weight: 700;
  font-size: 18px;
  color: #ffffff;
  letter-spacing: -0.3px;
}
.topbar-subtitle {
  font-size: 11px;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  display: block;
  margin-top: 1px;
}
.topbar-clock {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1px;
}
.topbar-clock-time {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  font-variant-numeric: tabular-nums;
}
.topbar-clock-date {
  font-size: 11px;
  color: rgba(255,255,255,0.65);
  text-transform: capitalize;
}

/* ── DASHBOARD ── */
.dash-cards { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:24px; }
.dash-card { background:var(--surface); border-radius:var(--radius); padding:20px 24px; box-shadow:var(--shadow); display:flex; flex-direction:column; gap:6px; }
.dash-card-value { font-size:32px; font-weight:800; line-height:1; }
.dash-card-label { font-size:12px; font-weight:600; text-transform:uppercase; letter-spacing:.5px; color:var(--text3); }
.dash-card-sub   { font-size:12px; color:var(--text3); margin-top:2px; }
.dash-grid { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-bottom:20px; }
.dash-grid-3 { display:grid; grid-template-columns:2fr 1fr; gap:20px; margin-bottom:20px; }
.dash-section-title { font-size:13px; font-weight:700; color:var(--text2); text-transform:uppercase; letter-spacing:.5px; margin-bottom:12px; }
.alert-item { display:flex; justify-content:space-between; align-items:center; padding:8px 0; border-bottom:1px solid var(--border); font-size:13px; }
.alert-item:last-child { border-bottom:none; }
@media(max-width:900px) { .dash-cards { grid-template-columns:1fr 1fr; } .dash-grid,.dash-grid-3 { grid-template-columns:1fr; } }

/* ── TOASTS ── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
  font-size: 13px;
  font-weight: 500;
  color: white;
  min-width: 260px;
  max-width: 380px;
  pointer-events: all;
  animation: toastIn .25s ease;
  cursor: pointer;
}
.toast.success { background: var(--green); }
.toast.error   { background: var(--red); }
.toast.warning { background: var(--amber); }
.toast.info    { background: var(--accent); }
.toast.fadeout { animation: toastOut .3s ease forwards; }
@keyframes toastIn  { from { opacity:0; transform:translateY(16px); } to { opacity:1; transform:translateY(0); } }
@keyframes toastOut { from { opacity:1; transform:translateY(0); } to { opacity:0; transform:translateY(16px); } }

/* ── NOTIFICACIONES ── */
.notif-banner {
  background: var(--red-lt);
  border-bottom: 1px solid var(--red);
  padding: 10px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--red);
  font-weight: 500;
  gap: 12px;
}
.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--red);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: 10px;
  padding: 1px 6px;
  margin-left: 5px;
  min-width: 18px;
  line-height: 16px;
}

/* ── TABS ── */
.tabs-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  display: flex;
  gap: 4px;
}
.tab {
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
  white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── LAYOUT ── */
.page { display: none; padding: 28px 32px; max-width: 1280px; margin: 0 auto; }
.page.active { display: block; }

/* ── CARD ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface2);
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title .icon {
  width: 28px; height: 28px;
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.card-body { padding: 20px 24px; }

/* ── GRID ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 380px 1fr; gap: 20px; }

/* ── FORM ELEMENTS ── */
label.field-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
}
input[type=text], input[type=number], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
input[type=text]:focus, input[type=number]:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
textarea { resize: vertical; }
.field { margin-bottom: 14px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
  white-space: nowrap;
}
.btn:hover { opacity: .88; }
.btn:active { transform: scale(.98); }
.btn-primary   { background: var(--accent); color: #fff; }
.btn-success   { background: var(--green);  color: #fff; }
.btn-danger    { background: var(--red);     color: #fff; }
.btn-secondary { background: #64748b;        color: #fff; }
.btn-cyan      { background: var(--cyan);    color: #fff; }
.btn-ghost     { background: var(--surface2); color: var(--text2); border: 1px solid var(--border); }
.btn-green     { background: var(--green);  color: #fff; }
.btn-sm        { padding: 5px 10px; font-size: 13px; }
.btn-full      { width: 100%; }
.btn-row       { display: flex; gap: 10px; }
.btn-row .btn  { flex: 1; }

/* ── TABLES ── */
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th {
  padding: 10px 12px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .4px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.tbl td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover td { background: var(--surface2); }
.tbl tfoot td {
  padding: 12px;
  border-top: 2px solid var(--border);
  background: var(--surface2);
}
.tbl .mono { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--text2); }
.tbl .right { text-align: right; }
.tbl .center { text-align: center; }
.tbl .bold { font-weight: 600; }
.tbl .total-label { text-align: right; font-weight: 700; font-size: 13px; color: var(--text2); text-transform: uppercase; letter-spacing: .4px; }
.tbl .total-value { text-align: right; font-weight: 800; font-size: 17px; color: var(--green); }

/* ── BADGES ── */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.badge-green  { background: var(--green-lt); color: var(--green); }
.badge-red    { background: var(--red-lt);   color: var(--red); }
.badge-amber  { background: var(--amber-lt); color: var(--amber); }
.badge-cyan   { background: var(--cyan-lt);  color: var(--cyan); }
.badge-blue   { background: var(--accent-lt);color: var(--accent); }
.badge-gray   { background: #f1f5f9;         color: #64748b; }
.badge-ok   { background: var(--green-lt); color: var(--green); }
.badge-warn { background: var(--amber-lt); color: var(--amber); }
.badge-bad  { background: var(--red-lt);   color: var(--red); }

/* ── MISC ── */
.hint { font-size: 12px; color: var(--text3); margin-top: 6px; line-height: 1.5; }
.section-title {
  font-size: 22px; font-weight: 700; margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px; color: var(--text);
}
.divider { height: 1px; background: var(--border); margin: 20px 0; }
.total-bar {
  font-size: 26px; font-weight: 800; color: var(--green);
  text-align: right; padding: 14px 0 4px;
}
#lista-stock { list-style: none; max-height: 280px; overflow-y: auto; }
#lista-stock li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 7px 4px; border-bottom: 1px solid var(--border);
  font-size: 13px; gap: 8px;
}
#lista-stock li:last-child { border-bottom: none; }
.stock-sku { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--text2); }
.stock-num { font-weight: 700; }
.stock-ok  { color: var(--green); }
.stock-bad { color: var(--red); }

#preview-wrap { margin-top: 14px; max-height: 300px; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.row-error td { background: var(--red-lt) !important; }

/* Pedidos guardados */
.pedido-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  overflow: hidden;
}
.pedido-header {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.pedido-meta { display: flex; gap: 28px; padding: 14px 20px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.pedido-meta-item { display: flex; flex-direction: column; gap: 2px; }
.pedido-meta-label { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: .5px; }
.pedido-meta-value { font-size: 14px; font-weight: 500; color: var(--text); }

/* ══════════════════════════════
   RESPONSIVO — TABLET (≤900px)
══════════════════════════════ */
@media (max-width: 900px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .page { padding: 16px; }
  .tabs-bar { overflow-x: auto; padding: 0 16px; }
  .tab { padding: 12px 14px; font-size: 13px; }
  .topbar { padding: 0 16px; height: 58px; }
  .topbar-name { font-size: 15px; }
  .topbar-subtitle { display: none; }
  .section-title { font-size: 15px; }
  .dash-cards { grid-template-columns: 1fr 1fr; }
  .dash-grid, .dash-grid-3 { grid-template-columns: 1fr; }
  .card-header { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
  .card-body { padding: 14px 16px; }
  .btn-row { flex-direction: column; }
  .btn-full { width: 100%; }
}

/* ══════════════════════════════
   RESPONSIVO — MÓVIL (≤600px)
══════════════════════════════ */
@media (max-width: 600px) {
  .topbar { height: 52px; }
  .topbar-logo { width: 34px; height: 34px; font-size: 17px; }
  .topbar-name { font-size: 14px; }
  .topbar-clock-date { display: none; }
  #btn-tema { width: 32px; height: 32px; font-size: 15px; }
  .tabs-bar { gap: 0; padding: 0 8px; }
  .tab { padding: 10px 10px; font-size: 12px; }
  .tab-badge { font-size: 9px; padding: 0 4px; min-width: 14px; }
  .page { padding: 10px; }
  .section-title { font-size: 14px; margin-bottom: 14px; }
  .dash-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
  .dash-card { padding: 14px 16px; }
  .dash-card-value { font-size: 24px; }
  .card { border-radius: 10px; }
  .card-header { padding: 10px 14px; }
  .card-body { padding: 12px 14px; }
  .tbl th, .tbl td { padding: 8px 10px; font-size: 12px; }
  .btn { padding: 8px 12px; font-size: 13px; }
  .btn-sm { padding: 5px 9px; font-size: 12px; }
  .total-bar { font-size: 22px; }
  .badge { font-size: 10px; padding: 2px 7px; }
  .pedido-card { padding: 14px; border-radius: 10px; }
  .pedido-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .pedido-meta { grid-template-columns: 1fr 1fr; gap: 10px; }
  #toast-container { left: 12px; right: 12px; bottom: 12px; }
  .toast { min-width: unset; width: 100%; }
  .notif-banner { padding: 10px 14px; font-size: 12px; flex-wrap: wrap; }
  /* Ocultar columnas menos importantes en tablas en móvil */
  .tbl .hide-mobile { display: none; }
}