/* ============================================================
   NÁCAR — Admin Panel CSS
   Independiente de main.css (no importar main.css en admin)
   ============================================================ */

:root {
  --gold:       #B8915A;
  --gold-lt:    #E8D5B8;
  --sidebar-bg: #1C1C1A;
  --sidebar-txt:#C8C4BC;
  --sidebar-act:#FAF8F4;
  --bg:         #F5F4F1;
  --surface:    #FFFFFF;
  --text:       #1C1C1A;
  --text-2:     #6B6860;
  --text-3:     #A8A59F;
  --border:     rgba(28,28,26,0.1);
  --border-md:  rgba(28,28,26,0.18);
  --success:    #2D7A4F;
  --success-bg: #EBF7F0;
  --warning:    #9A6B00;
  --warning-bg: #FEF7E0;
  --danger:     #C0392B;
  --danger-bg:  #FDECEA;
  --info:       #1A5F9A;
  --info-bg:    #E8F2FB;
  --sidebar-w:  220px;
}

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

html { font-size: 14px; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ════════════════════════════════════════════════════════════
   LAYOUT
   ════════════════════════════════════════════════════════════ */

.admin-wrap {
  display: flex;
  min-height: 100vh;
}

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

.sidebar-brand {
  padding: 1.5rem 1.25rem 1rem;
  border-bottom: 0.5px solid rgba(255,255,255,0.08);
}

.sidebar-logo {
  font-family: Georgia, serif;
  font-size: 16px;
  letter-spacing: 0.35em;
  color: #FAF8F4;
  text-transform: uppercase;
}

.sidebar-sub {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  margin-top: 0.2rem;
}

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

.nav-section {
  padding: 0.75rem 1.25rem 0.25rem;
  font-size: 9px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 1.25rem;
  font-size: 12px;
  color: var(--sidebar-txt);
  transition: background 0.15s, color 0.15s;
  border-left: 2px solid transparent;
}

.nav-link:hover {
  background: rgba(255,255,255,0.05);
  color: var(--sidebar-act);
}

.nav-link.active {
  background: rgba(184,145,90,0.12);
  color: var(--gold);
  border-left-color: var(--gold);
}

.nav-link svg { flex-shrink: 0; opacity: 0.7; }
.nav-link.active svg { opacity: 1; }

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 0.5px solid rgba(255,255,255,0.08);
}

.sidebar-admin {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.5rem;
}

.sidebar-admin strong {
  color: rgba(255,255,255,0.75);
  display: block;
  font-weight: 500;
}

/* ── Main content ───────────────────────────────────────────── */
.admin-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.admin-header {
  background: var(--surface);
  border-bottom: 0.5px solid var(--border-md);
  padding: 0.85rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

.page-breadcrumb {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 1px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.admin-content {
  padding: 1.5rem 1.75rem;
  flex: 1;
}

/* ════════════════════════════════════════════════════════════
   COMPONENTES
   ════════════════════════════════════════════════════════════ */

/* ── Botones ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 12px;
  font-weight: 500;
  border: 0.5px solid var(--border-md);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn:hover { background: var(--bg); border-color: var(--text-3); }

.btn-primary {
  background: var(--text);
  color: #FAF8F4;
  border-color: var(--text);
}
.btn-primary:hover { background: #333; border-color: #333; }

.btn-gold {
  background: var(--gold);
  color: #fff;
  border-color: var(--gold);
}
.btn-gold:hover { background: #A07840; border-color: #A07840; }

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(192,57,43,0.2);
}
.btn-danger:hover { background: #f8d7d4; }

.btn-sm { padding: 0.3rem 0.65rem; font-size: 11px; }
.btn-icon { padding: 0.4rem; }

/* ── Cards / surfaces ───────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 0.5px solid var(--border-md);
  padding: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 0.5px solid var(--border);
}

.card-title {
  font-size: 13px;
  font-weight: 500;
}

/* ── KPI Cards ──────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--surface);
  border: 0.5px solid var(--border-md);
  padding: 1.1rem 1.25rem;
}

.kpi-label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.5rem;
}

.kpi-value {
  font-size: 24px;
  font-weight: 500;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.kpi-value.gold { color: var(--gold); }

.kpi-sub {
  font-size: 11px;
  color: var(--text-3);
}

/* ── Tablas ─────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

th {
  text-align: left;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
  padding: 0.6rem 0.75rem;
  border-bottom: 0.5px solid var(--border-md);
  white-space: nowrap;
}

td {
  padding: 0.7rem 0.75rem;
  border-bottom: 0.5px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }

.td-img {
  width: 42px;
  height: 52px;
  object-fit: cover;
  background: var(--bg);
  display: block;
}

/* ── Badges de estado ───────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.55rem;
  font-weight: 500;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger  { background: var(--danger-bg);  color: var(--danger); }
.badge-info    { background: var(--info-bg);    color: var(--info); }
.badge-gray    { background: var(--bg);         color: var(--text-3); border: 0.5px solid var(--border-md); }

/* ── Flash messages ─────────────────────────────────────────── */
.flash {
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flash-success { background: var(--success-bg); color: var(--success); border-left: 2px solid var(--success); }
.flash-error   { background: var(--danger-bg);  color: var(--danger);  border-left: 2px solid var(--danger); }
.flash-warning { background: var(--warning-bg); color: var(--warning); border-left: 2px solid #D4A800; }

/* ── Formularios ────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.full { grid-column: 1 / -1; }

label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
select,
textarea {
  font-family: inherit;
  font-size: 12px;
  color: var(--text);
  background: var(--surface);
  border: 0.5px solid var(--border-md);
  padding: 0.55rem 0.75rem;
  width: 100%;
  transition: border-color 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--gold);
}

textarea { resize: vertical; min-height: 90px; }

.form-hint {
  font-size: 10px;
  color: var(--text-3);
}

.form-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Checkbox custom */
.check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 12px;
  color: var(--text-2);
  cursor: pointer;
}

.check-label input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--gold);
  flex-shrink: 0;
}

/* ── Filtros de listado ─────────────────────────────────────── */
.filters-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.filter-select {
  font-family: inherit;
  font-size: 11px;
  color: var(--text-2);
  border: 0.5px solid var(--border-md);
  background: var(--surface);
  padding: 0.4rem 1.75rem 0.4rem 0.65rem;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23A8A59F' stroke-width='0.8' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  cursor: pointer;
}

.search-input {
  font-family: inherit;
  font-size: 11px;
  border: 0.5px solid var(--border-md);
  padding: 0.4rem 0.75rem;
  min-width: 200px;
  background: var(--surface);
}

.search-input:focus { outline: none; border-color: var(--gold); }

/* ── Paginación ─────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 1rem 0 0;
  font-size: 12px;
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 30px;
  padding: 0 0.4rem;
  border: 0.5px solid var(--border-md);
  color: var(--text-2);
  background: var(--surface);
  transition: background 0.15s;
}

.page-link:hover { background: var(--bg); }
.page-link.active { background: var(--text); color: #FAF8F4; border-color: var(--text); }
.page-link.disabled { opacity: 0.4; pointer-events: none; }

/* ── Upload de imágenes ─────────────────────────────────────── */
.img-upload-area {
  border: 0.5px dashed var(--border-md);
  padding: 1.5rem;
  text-align: center;
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.2s;
}

.img-upload-area:hover { border-color: var(--gold); }

.img-upload-area input[type="file"] {
  display: none;
}

.img-upload-label {
  font-size: 11px;
  color: var(--text-3);
  display: block;
  margin-top: 0.5rem;
}

.img-previews {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.img-preview {
  position: relative;
  width: 80px;
  height: 100px;
}

.img-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 0.5px solid var(--border-md);
}

.img-preview-remove {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  background: var(--danger);
  color: #fff;
  border: none;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ── Gráfico de barras (CSS) ────────────────────────────────── */
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  height: 100px;
  padding-top: 0.5rem;
}

.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  height: 100%;
  justify-content: flex-end;
}

.bar {
  width: 100%;
  background: var(--gold-lt);
  min-height: 3px;
  transition: background 0.2s;
  position: relative;
}

.bar:hover { background: var(--gold); }

.bar-label {
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

/* ── Login page ─────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sidebar-bg);
}

.login-box {
  background: var(--surface);
  width: 100%;
  max-width: 360px;
  padding: 2.5rem;
}

.login-logo {
  font-family: Georgia, serif;
  font-size: 20px;
  letter-spacing: 0.38em;
  text-align: center;
  margin-bottom: 0.4rem;
}

.login-sub {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: center;
  margin-bottom: 2rem;
}

/* ── Stock indicator ────────────────────────────────────────── */
.stock-low  { color: var(--danger); font-weight: 500; }
.stock-ok   { color: var(--success); }
.stock-zero { color: var(--text-3); }

/* ── Attributes grid ────────────────────────────────────────── */
.attr-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem 1.5rem;
}

.attr-group-title {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.4rem;
  grid-column: 1 / -1;
}