/* ── VARIABLES ─────────────────────────────────────────────── */
:root {
  --teal: #1B3A3A;
  --teal-mid: #2a6b5a;
  --teal-light: #4EC9B0;
  --bg: #f0f4f4;
  --card: #ffffff;
  --border: #e8eeee;
  --text: #1a1a1a;
  --muted: #888;
  --danger: #e74c3c;
  --success: #27ae60;
  --warning: #f39c12;
  --sidebar-w: 240px;
  --topbar-h: 56px;
  --shadow: 0 1px 8px rgba(0,0,0,.06);
  --radius: 12px;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── LOGIN PAGE ───────────────────────────────────────────── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1B3A3A 0%, #2a6b5a 100%);
}

.login-card {
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
  width: 100%;
  max-width: 400px;
  overflow: hidden;
}

.login-brand {
  background: var(--teal);
  padding: 32px 32px 24px;
  text-align: center;
}

.login-logo {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 2px;
}
.login-logo span { color: var(--teal-light); }

.login-sub {
  color: rgba(255,255,255,.6);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-top: 6px;
}

.login-card form { padding: 32px; }

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.field input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}
.field input:focus { border-color: var(--teal-light); }

.login-err {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  text-align: center;
  min-height: 20px;
}

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn-primary {
  background: var(--teal);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}
.btn-primary:hover { background: var(--teal-mid); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.btn-block { width: 100%; }

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: all .2s;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
}
.btn-outline:hover { border-color: var(--teal-light); color: var(--teal-mid); }

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--muted);
  transition: color .2s;
  display: inline-flex;
  align-items: center;
}
.btn-icon:hover { color: var(--teal-mid); }

/* ── SIDEBAR ──────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--teal);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: transform .3s ease;
}

.sidebar-brand {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 2px;
}
.sidebar-logo span { color: var(--teal-light); }

.sidebar-sub {
  color: rgba(255,255,255,.4);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-top: 4px;
}

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

.nav-group-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.3);
  padding: 8px 12px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  color: rgba(255,255,255,.65);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 8px;
  transition: all .15s;
  text-decoration: none;
  margin-bottom: 2px;
}
.nav-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-item.active {
  background: rgba(78,201,176,.15);
  color: var(--teal-light);
}

.nav-external {
  margin-left: auto;
  font-size: 11px;
  opacity: .4;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,.7);
  font-size: 13px;
  font-weight: 500;
}

.avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--teal-light);
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.btn-logout {
  background: none;
  border: none;
  color: rgba(255,255,255,.4);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: all .2s;
  display: flex;
}
.btn-logout:hover { color: #fff; background: rgba(255,255,255,.1); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 199;
}

/* ── TOPBAR (mobile) ──────────────────────────────────────── */
.topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--teal);
  color: #fff;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  z-index: 100;
}

.hamburger {
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 4px;
}

.topbar-title { font-weight: 700; font-size: 16px; letter-spacing: 1px; }

/* ── MAIN CONTENT ─────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  padding: 28px;
  min-height: 100vh;
}

.section { display: none; }
.section.active { display: block; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--teal);
}

/* ── CARDS ─────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-body { padding: 20px; }

/* ── SUMMARY CHIPS ────────────────────────────────────────── */
.summary-row {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.summary-chip {
  background: var(--card);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 16px 20px;
  min-width: 160px;
  flex: 1;
}

.summary-chip .chip-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 6px;
}

.summary-chip .chip-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--teal);
}

/* ── TOOLBAR ──────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-input {
  padding: 9px 14px 9px 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  outline: none;
  background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") 12px center no-repeat;
  min-width: 220px;
  transition: border-color .2s;
}
.search-input:focus { border-color: var(--teal-light); }

.filter-btn {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--teal-light); }
.filter-btn.active { background: var(--teal-light); color: #fff; border-color: var(--teal-light); }

/* ── STOCK TABLE ──────────────────────────────────────────── */
.stock-group {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 12px;
  overflow: hidden;
}

.stock-group-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  cursor: pointer;
  transition: background .15s;
  user-select: none;
}
.stock-group-header:hover { background: #f9fcfc; }

.stock-group-thumb {
  width: 44px; height: 44px;
  border-radius: 8px;
  background: var(--bg);
  flex-shrink: 0;
  object-fit: cover;
}

.stock-group-info { flex: 1; min-width: 0; }

.stock-group-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stock-group-meta {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  margin-top: 2px;
}

.stock-group-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  background: rgba(78,201,176,.12);
  color: var(--teal-mid);
  white-space: nowrap;
}

.stock-group-badge.sin-stock {
  background: rgba(231,76,60,.1);
  color: var(--danger);
}

.stock-group-arrow {
  color: var(--muted);
  transition: transform .25s;
  font-size: 12px;
  flex-shrink: 0;
}

.stock-group.open .stock-group-arrow { transform: rotate(90deg); }

.stock-group-body {
  display: none;
  border-top: 1px solid var(--border);
}

.stock-group.open .stock-group-body { display: block; }

.variant-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px 10px 78px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.variant-row:last-child { border-bottom: none; }
.variant-row:nth-child(even) { background: #fafcfc; }

.variant-talla {
  font-weight: 600;
  color: var(--teal);
  min-width: 60px;
}

.variant-code {
  font-family: 'Consolas', monospace;
  font-size: 11px;
  color: var(--teal-mid);
  min-width: 100px;
}

.variant-price {
  min-width: 80px;
  text-align: right;
  font-weight: 600;
}

.variant-stock {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.stock-adj {
  width: 28px; height: 28px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  transition: all .15s;
}
.stock-adj:hover { background: var(--teal-light); color: #fff; border-color: var(--teal-light); }

.stock-val {
  font-weight: 700;
  font-size: 15px;
  min-width: 28px;
  text-align: center;
}
.stock-val.zero { color: var(--danger); }

.stock-save {
  padding: 4px 12px;
  border: none;
  border-radius: 6px;
  background: var(--teal-light);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: none;
  transition: background .2s;
}
.stock-save:hover { background: var(--teal-mid); }
.stock-save.visible { display: inline-block; }

/* ── SPINNER ──────────────────────────────────────────────── */
.spinner-wrap { text-align: center; padding: 60px; }
.spinner {
  display: inline-block;
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--teal-light);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── TOAST ────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 28px; right: 28px;
  background: var(--teal);
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 6px 24px rgba(0,0,0,.2);
  z-index: 9999;
  opacity: 0;
  transform: translateY(12px);
  transition: all .3s ease;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: none; }
.toast.error { background: var(--danger); }

/* ── MODAL ─────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 500;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-box {
  background: var(--card);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--teal);
}

.modal-header button {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--muted);
  padding: 4px;
  line-height: 1;
}

.modal-body {
  padding: 24px;
}

.modal-body .field { margin-bottom: 14px; }

.modal-body select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: #fff;
  transition: border-color .2s;
}
.modal-body select:focus { border-color: var(--teal-light); }

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

/* ── DATA TABLE ───────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead th {
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: #fff;
  background: var(--teal);
  text-align: left;
  white-space: nowrap;
}

.data-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}
.data-table tbody tr:hover { background: #f7fffe; }

.data-table tbody td {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text);
  vertical-align: middle;
}

.data-table .text-right { text-align: right; }
.data-table .text-center { text-align: center; }
.data-table .mono { font-family: 'Consolas', monospace; font-size: 12px; color: var(--teal-mid); }
.data-table .bold { font-weight: 700; }

/* ── BADGES ───────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.badge-success { background: rgba(39,174,96,.12); color: var(--success); }
.badge-warning { background: rgba(243,156,18,.12); color: var(--warning); }
.badge-danger  { background: rgba(231,76,60,.12);  color: var(--danger);  }
.badge-info    { background: rgba(78,201,176,.12);  color: var(--teal-mid);}

.text-success { color: var(--success); }
.text-danger  { color: var(--danger);  }

/* ── CART ──────────────────────────────────────────────────── */
.cart-section {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  overflow: hidden;
}

.cart-header {
  background: var(--teal);
  color: #fff;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-total-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: #f9fcfc;
}

.cart-total-bar .total-label {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.cart-total-bar .total-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--teal);
}

.product-search-wrap {
  position: relative;
}

.product-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  max-height: 240px;
  overflow-y: auto;
  z-index: 50;
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
}

.product-results .result-item {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.product-results .result-item:hover { background: #f0f8f6; }

.product-results .result-name { font-weight: 600; color: var(--teal); }
.product-results .result-meta { font-size: 11px; color: var(--muted); }

/* ── EMPTY STATE ──────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ── CART FAB ──────────────────────────────────────────────── */
.cart-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--teal-light);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  z-index: 400;
  transition: transform .2s, box-shadow .2s;
}
.cart-fab:hover { transform: scale(1.08); box-shadow: 0 6px 20px rgba(0,0,0,.3); }
.cart-fab-icon { font-size: 24px; }
.cart-fab-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
}

/* ── FILTER DROPDOWNS ─────────────────────────────────────── */
.filter-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 180px;
  max-height: 280px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  z-index: 100;
}
.filter-dropdown.open { display: block; }
.filter-dropdown-item {
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 1px solid #f5f5f5;
  transition: background .1s;
}
.filter-dropdown-item:hover { background: #f0f8f6; }
.filter-dropdown-item.selected { color: var(--teal-mid); font-weight: 600; }
.filter-dropdown-item:last-child { border-bottom: none; }

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

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: none; }
  .sidebar-overlay.open { display: block; }
  .topbar { display: flex; }
  .main { margin-left: 0; padding: 16px; padding-top: calc(var(--topbar-h) + 16px); }
  .summary-row { flex-direction: column; }
  .summary-chip { min-width: auto; }
  .search-input { min-width: auto; flex: 1; }
  .variant-row { padding-left: 20px; flex-wrap: wrap; }
  .variant-code { display: none; }
}