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

:root {
  --bg: #f5f4f0;
  --surface: #ffffff;
  --border: #e0ddd6;
  --border-strong: #c8c4bb;
  --text: #1a1916;
  --text-2: #6b6860;
  --text-3: #a09d97;
  --accent: #1a1916;
  --green: #2d6a4f;
  --green-bg: #d8f3dc;
  --amber: #92400e;
  --amber-bg: #fef3c7;
  --red: #991b1b;
  --red-bg: #fee2e2;
  --blue: #1e40af;
  --blue-bg: #dbeafe;
  --radius: 10px;
  --mono: 'DM Mono', monospace;
  --sans: 'DM Sans', sans-serif;
}

body { font-family: var(--sans); background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.6; min-height: 100vh; }

/* HEADER */
.header { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.logo { font-size: 16px; font-weight: 500; letter-spacing: -0.02em; white-space: nowrap; }
.logo em { font-style: normal; color: var(--text-2); font-weight: 300; }
.header-user { font-size: 12px; color: var(--text-2); font-family: var(--mono); }
.header-nav { display: flex; gap: 4px; }
.nav-btn { font-size: 13px; font-family: var(--sans); background: none; border: none; padding: 6px 12px; border-radius: 6px; cursor: pointer; color: var(--text-2); transition: background 0.15s, color 0.15s; }
.nav-btn:hover { background: var(--bg); color: var(--text); }
.nav-btn.active { background: var(--accent); color: #fff; }
.btn-logout { font-size: 12px; font-family: var(--sans); background: none; border: 1px solid var(--border); border-radius: 6px; padding: 5px 12px; cursor: pointer; color: var(--text-2); }

/* MAIN */
.main { max-width: 1200px; margin: 0 auto; padding: 2rem 1.5rem; }

/* LOGIN */
.login-page { 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: 16px; padding: 2.5rem; width: 360px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.login-logo { font-size: 22px; font-weight: 500; letter-spacing: -0.03em; margin-bottom: 0.25rem; }
.login-logo em { font-style: normal; color: var(--text-2); font-weight: 300; }
.login-sub { font-size: 13px; color: var(--text-2); margin-bottom: 2rem; }
.login-field { margin-bottom: 1rem; }
.login-field label { display: block; font-size: 12px; font-weight: 500; color: var(--text-2); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.05em; }
.login-err { font-size: 12px; color: var(--red); margin-top: 8px; font-family: var(--mono); text-align: center; }

/* FORMS */
input, select, textarea {
  font-family: var(--sans); font-size: 13px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 7px; padding: 9px 12px;
  color: var(--text); outline: none; transition: border-color 0.15s; width: 100%;
}
input:focus, select:focus { border-color: var(--accent); background: #fff; }
input.err { border-color: var(--red); }

/* BUTTONS */
.btn { font-family: var(--sans); border: none; border-radius: 8px; padding: 10px 20px; font-size: 13px; font-weight: 500; cursor: pointer; transition: opacity 0.15s, transform 0.1s; letter-spacing: -0.01em; }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { opacity: 0.85; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border-strong); }
.btn-secondary:hover { background: var(--bg); }
.btn-danger { background: var(--red-bg); color: var(--red); border: 1px solid #fca5a5; }
.btn-danger:hover { background: #fee2e2; }
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: 6px; }
.btn-export { background: var(--green-bg); color: var(--green); border: 1px solid #86efac; }
.btn-export:hover { opacity: 0.85; }
.btn-full { width: 100%; justify-content: center; display: block; text-align: center; }

/* CARDS */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1rem; }
.card-title { font-size: 13px; font-weight: 500; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1rem; }

/* DROPZONE */
.drop-zone { border: 1.5px dashed var(--border-strong); border-radius: var(--radius); padding: 1.5rem; text-align: center; cursor: pointer; transition: background 0.15s, border-color 0.15s; background: var(--surface); user-select: none; }
.drop-zone:hover, .drop-zone.dragging { background: var(--bg); }
.drop-zone.loaded { border-style: solid; border-color: var(--green); background: #f0fdf4; }
.dz-icon { font-size: 26px; display: block; margin-bottom: 6px; }
.dz-label { font-size: 13px; font-weight: 500; }
.dz-sub { font-size: 12px; color: var(--text-2); margin-top: 3px; font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* STATUS */
.status-box { border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; display: flex; align-items: center; gap: 12px; background: var(--surface); }
.status-box.ok { border-color: var(--green); background: #f0fdf4; }
.status-box.warn { border-color: #f59e0b; background: var(--amber-bg); }
.status-icon { font-size: 22px; flex-shrink: 0; }
.status-label { font-size: 13px; font-weight: 500; }
.status-sub { font-size: 12px; color: var(--text-2); font-family: var(--mono); }

/* TAGS */
.tag { display: inline-block; font-size: 11px; padding: 3px 10px; border-radius: 999px; font-weight: 500; font-family: var(--mono); }
.tag-ok { background: var(--green-bg); color: var(--green); }
.tag-warn { background: var(--amber-bg); color: var(--amber); }
.tag-err { background: var(--red-bg); color: var(--red); }
.tag-info { background: var(--blue-bg); color: var(--blue); }

/* LOG */
.log-msg { font-size: 12px; margin-top: 10px; min-height: 20px; }

/* METRICS */
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 1.5rem; }
.metric { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.metric-label { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 3px; }
.metric-val { font-size: 20px; font-weight: 500; font-family: var(--mono); letter-spacing: -0.03em; }

/* TABLA */
.tabla-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; font-size: 11px; width: 100%; min-width: max-content; }
th { font-weight: 500; text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); color: var(--text-2); font-size: 10px; white-space: nowrap; background: var(--bg); position: sticky; top: 0; font-family: var(--mono); letter-spacing: 0.03em; }
th.num { text-align: right; }
th.ventas-col { background: #eff6ff; color: var(--blue); border-bottom-color: #bfdbfe; }
th.exist-col  { background: #f0fdf4; color: var(--green); border-bottom-color: #bbf7d0; }
th.group-header { text-align: center; font-size: 10px; font-weight: 600; letter-spacing: 0.08em; padding: 4px; }
th.group-ventas { background: #eff6ff; color: var(--blue); border-bottom: 1px solid #bfdbfe; }
th.group-exist  { background: #f0fdf4; color: var(--green); border-bottom: 1px solid #bbf7d0; }
td { padding: 6px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td.num { text-align: right; font-family: var(--mono); }
td.cero { color: var(--text-3); }
td.total-cell { font-weight: 600; }
tr:hover td { background: #fafaf9; }
tfoot .total-row td { font-weight: 600; background: var(--bg); border-top: 2px solid var(--border-strong); font-family: var(--mono); font-size: 11px; }

/* TOOLBAR */
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filters input { width: 200px; }
.filters select { width: 160px; }

/* MAPPING */
.map-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.map-row label { font-size: 12px; color: var(--text-2); width: 150px; flex-shrink: 0; }
.map-row select { flex: 1; }

/* USERS TABLE */
.users-list { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.user-row { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--surface); }
.user-row:last-child { border-bottom: none; }
.user-row:hover { background: var(--bg); }
.user-name { font-size: 13px; font-weight: 500; flex: 1; }
.user-sub  { font-size: 11px; color: var(--text-2); font-family: var(--mono); }
.user-actions { display: flex; gap: 6px; }

/* SECTION TITLES */
.section-title { font-size: 20px; font-weight: 500; letter-spacing: -0.03em; margin-bottom: 1.25rem; }
.sub-title { font-size: 14px; font-weight: 500; margin-bottom: 0.75rem; color: var(--text); }

/* GRID LAYOUTS */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
@media (max-width: 700px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.count { font-size: 11px; color: var(--text-3); margin-top: 6px; font-family: var(--mono); }
.empty-msg { text-align: center; padding: 3rem; color: var(--text-3); font-size: 13px; }
.spacer { height: 1rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

/* PREVIEW TABLE */
.preview-title { font-size: 11px; color: var(--text-2); margin: 1rem 0 6px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

/* BARRA DE PROGRESO */
.progress-wrap { margin-top: 1rem; display: none; }
.progress-wrap.visible { display: block; }
.progress-label { font-size: 12px; color: var(--text-2); margin-bottom: 6px; display: flex; justify-content: space-between; font-family: var(--mono); }
.progress-track { width: 100%; height: 6px; background: var(--border); border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; width: 0%; background: var(--accent); border-radius: 999px; transition: width 0.3s ease; }
.progress-bar.done { background: var(--green); }
.progress-bar.animated { background: linear-gradient(90deg, var(--accent) 0%, #555 50%, var(--accent) 100%); background-size: 200% 100%; animation: shimmer 1.2s infinite; }
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }