/* ============================================
   TIENDA - Estilos principales
   Diseño moderno y responsivo
   ============================================ */

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

:root {
  --primary:     #2563eb;
  --primary-dark:#1d4ed8;
  --primary-light:#dbeafe;
  --accent:      #f59e0b;
  --accent-dark: #d97706;
  --success:     #10b981;
  --danger:      #ef4444;
  --warning:     #f59e0b;
  --info:        #3b82f6;
  --dark:        #1e293b;
  --gray-900:    #0f172a;
  --gray-700:    #334155;
  --gray-500:    #64748b;
  --gray-300:    #cbd5e1;
  --gray-100:    #f1f5f9;
  --white:       #ffffff;
  --bg:          #f8fafc;
  --sidebar-w:   260px;
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,0.08);
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.06);
  --transition:  all 0.25s ease;
}

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

body {
  font-family: 'Nunito', sans-serif;
  background: var(--bg);
  color: var(--dark);
  font-size: 15px;
  line-height: 1.6;
}

/* ===== LAYOUT ===== */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-w);
  background: var(--gray-900);
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 1000;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}

.logo-text {
  font-family: 'Sora', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.logo-sub {
  font-size: 11px;
  color: var(--gray-500);
  display: block;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  padding: 0 8px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: #94a3b8;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover, .nav-item.active {
  background: rgba(37,99,235,0.15);
  color: #93c5fd;
}

.nav-item.active {
  background: var(--primary);
  color: var(--white);
}

.nav-item .icon {
  font-size: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  margin-bottom: 8px;
}

.user-avatar {
  width: 34px; height: 34px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: white;
  flex-shrink: 0;
}

.user-name { font-size: 13px; font-weight: 600; color: var(--white); }
.user-rol  { font-size: 11px; color: var(--gray-500); }

/* ===== MAIN CONTENT ===== */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== TOPBAR ===== */
.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-300);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-title {
  font-family: 'Sora', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--dark);
}

/* ===== PAGE CONTENT ===== */
.page-content {
  padding: 28px;
  flex: 1;
}

/* ===== CARDS / STATS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

.stat-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.stat-icon.blue   { background: var(--primary-light); color: var(--primary); }
.stat-icon.green  { background: #d1fae5; color: var(--success); }
.stat-icon.amber  { background: #fef3c7; color: var(--accent); }
.stat-icon.red    { background: #fee2e2; color: var(--danger); }

.stat-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
  font-family: 'Sora', sans-serif;
}

.stat-label {
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== CARD ===== */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  overflow: hidden;
}

.card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-family: 'Sora', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
}

.card-body { padding: 22px; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  line-height: 1;
}

.btn-primary  { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-success  { background: var(--success); color: white; }
.btn-success:hover  { background: #059669; }
.btn-danger   { background: var(--danger); color: white; }
.btn-danger:hover   { background: #dc2626; }
.btn-warning  { background: var(--accent); color: white; }
.btn-warning:hover  { background: var(--accent-dark); }
.btn-outline  { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover  { background: var(--primary); color: white; }
.btn-gray     { background: var(--gray-100); color: var(--gray-700); }
.btn-gray:hover     { background: var(--gray-300); }
.btn-sm       { padding: 6px 12px; font-size: 13px; }
.btn-icon     { padding: 8px; width: 36px; height: 36px; justify-content: center; }

/* ===== TABLE ===== */
.table-responsive { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead th {
  background: var(--gray-100);
  color: var(--gray-700);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
}

tbody td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--dark);
  vertical-align: middle;
}

tbody tr:hover { background: #f8faff; }
tbody tr:last-child td { border-bottom: none; }

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.badge-success { background: #d1fae5; color: #065f46; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info    { background: var(--primary-light); color: #1d4ed8; }
.badge-gray    { background: var(--gray-100); color: var(--gray-700); }

/* ===== MARGEN BADGE ===== */
.margen-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 800;
}
.margen-alto   { background: #d1fae5; color: #065f46; }
.margen-medio  { background: #fef3c7; color: #92400e; }
.margen-bajo   { background: #fee2e2; color: #991b1b; }
.margen-sin    { background: var(--gray-100); color: var(--gray-500); }

/* ===== FORMS ===== */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-weight: 700;
  font-size: 13px;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  color: var(--dark);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-control.is-invalid { border-color: var(--danger); }
.form-text { font-size: 12px; color: var(--gray-500); margin-top: 4px; }
.form-row  { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ===== SEARCH BAR ===== */
.search-box {
  position: relative;
  flex: 1;
  max-width: 320px;
}

.search-box input {
  padding-left: 38px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-500);
  font-size: 16px;
}

/* ===== MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
}

.modal-overlay.show { display: flex; }

.modal {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalIn 0.25s ease;
}

.modal-lg { max-width: 760px; }

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(-10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: 'Sora', sans-serif;
  font-size: 17px;
  font-weight: 700;
}

.modal-body    { padding: 24px; }
.modal-footer  {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.btn-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--gray-500);
  line-height: 1;
  padding: 4px;
  border-radius: 6px;
  transition: var(--transition);
}
.btn-close:hover { background: var(--gray-100); color: var(--dark); }

/* ===== ALERTS ===== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.alert-success { background: #d1fae5; color: #065f46; border-left: 4px solid var(--success); }
.alert-danger  { background: #fee2e2; color: #991b1b; border-left: 4px solid var(--danger); }
.alert-warning { background: #fef3c7; color: #92400e; border-left: 4px solid var(--accent); }

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--dark);
  color: white;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toastIn 0.3s ease;
  min-width: 280px;
}

.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }
.toast.warning { background: var(--accent); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-500);
}
.empty-state .empty-icon { font-size: 56px; margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 18px; color: var(--gray-700); margin-bottom: 6px; }

/* ===== STOCK INDICATOR ===== */
.stock-low  { color: var(--danger); font-weight: 700; }
.stock-ok   { color: var(--success); font-weight: 700; }
.stock-zero { color: var(--gray-500); }

/* ===== LOGIN PAGE ===== */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #1e293b 0%, #1d4ed8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--white);
  border-radius: 20px;
  padding: 44px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 40px 80px rgba(0,0,0,0.3);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo .logo-icon {
  width: 60px; height: 60px;
  font-size: 28px;
  margin: 0 auto 12px;
}

.login-title {
  font-family: 'Sora', sans-serif;
  font-size: 26px;
  font-weight: 700;
  text-align: center;
  color: var(--dark);
  margin-bottom: 6px;
}

.login-sub {
  text-align: center;
  color: var(--gray-500);
  font-size: 14px;
  margin-bottom: 28px;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px;
}

.page-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 2px solid var(--gray-300);
  background: white;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.page-btn:hover, .page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ===== FILTER TOOLBAR ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== PRODUCT NAME ===== */
.product-name { font-weight: 700; }
.product-cat  { font-size: 12px; color: var(--gray-500); }

/* ===== PROGRESS BAR ===== */
.progress {
  height: 6px;
  background: var(--gray-100);
  border-radius: 10px;
  overflow: hidden;
  margin-top: 4px;
}
.progress-bar {
  height: 100%;
  border-radius: 10px;
  background: var(--primary);
  transition: width 0.5s ease;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: 1100;
  }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .btn-menu-toggle { display: flex; }
  .page-content { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .topbar { padding: 14px 16px; }
  .card-header { padding: 14px 16px; }
  .card-body { padding: 16px; }
  .modal { border-radius: 16px 16px 0 0; position: fixed; bottom: 0; top: auto; max-height: 95vh; }
  .modal-overlay { align-items: flex-end; padding: 0; }
  table { font-size: 13px; }
  thead th, tbody td { padding: 10px 12px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .search-box { max-width: none; }
}

/* Sidebar overlay on mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1050;
}
.sidebar-overlay.show { display: block; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }