:root {
  /* Цвета */
  --primary: #2563eb; --primary-hover: #1d4ed8; --primary-light: #eff6ff;
  --success: #10b981; --success-bg: #ecfdf5; --success-text: #047857;
  --warning: #f59e0b; --warning-bg: #fffbeb; --warning-text: #92400e;
  --danger: #ef4444;  --danger-bg: #fef2f2;  --danger-text: #b91c1c;
  --info: #6366f1;    --info-bg: #eef2ff;    --info-text: #3730a3;
  --neutral: #64748b; --neutral-bg: #f1f5f9; --neutral-text: #475569;

  /* Фон и Поверхности */
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-sidebar: #0f172a;
  --bg-sidebar-hover: #1e293b;
  --bg-input: #ffffff;
  --bg-disabled: #f1f5f9;

  /* Текст */
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Границы и Тени */
  --border: #e2e8f0;
  --border-focus: #2563eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  /* Типографика и Размеры */
  --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 14px; --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   🧱 БАЗОВЫЙ СБРОС
   ========================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--bg-body); color: var(--text-main); line-height: 1.5; min-height: 100vh; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-hover); text-decoration: underline; }
ul, ol { list-style: none; }
img, svg { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* =========================================
   📐 LAYOUT & SHELL
   ========================================= */
.app-shell { display: flex; min-height: 100vh; overflow: hidden; }
.sidebar {
  width: 260px; background: var(--bg-sidebar); color: var(--text-inverse);
  display: flex; flex-direction: column; flex-shrink: 0; transition: var(--transition);
}
.sidebar-header { padding: 1.2rem 1.5rem; border-bottom: 1px solid #334155; font-size: 1.25rem; font-weight: 700; display: flex; align-items: center; gap: 0.6rem; }
.sidebar-header span { background: var(--primary); padding: 0.2rem 0.5rem; border-radius: var(--radius-sm); font-size: 0.9em; }
.sidebar-nav { flex: 1; padding: 0.8rem 0; overflow-y: auto; }
.sidebar-footer { padding: 1rem 1.5rem; border-top: 1px solid #334155; font-size: 0.8rem; color: #94a3b8; }

.nav-link {
  display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1.5rem;
  color: #cbd5e1; font-weight: 500; transition: var(--transition); cursor: pointer;
}
.nav-link:hover { background: var(--bg-sidebar-hover); color: white; text-decoration: none; }
.nav-link.active { background: var(--primary); color: white; border-left: 4px solid #93c5fd; }
.nav-icon { width: 1.2rem; text-align: center; opacity: 0.8; }

.main-area { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  height: 64px; background: var(--bg-surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; padding: 0 2rem;
  box-shadow: var(--shadow-sm); flex-shrink: 0;
  position: relative; z-index: 100; overflow: visible;
}
.topbar-title { font-size: 1.2rem; font-weight: 600; color: var(--text-main); }
.topbar-actions { display: flex; align-items: center; gap: 1rem; position: relative; }

.content-scroll { flex: 1; overflow-y: auto; padding: 2rem; }
.container { max-width: 1440px; margin: 0 auto; width: 100%; }

/* =========================================
   🔤 TYPOGRAPHY
   ========================================= */
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.25; color: var(--text-main); margin-bottom: 0.75rem; }
h1 { font-size: 1.875rem; } h2 { font-size: 1.5rem; } h3 { font-size: 1.25rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
.text-muted { color: var(--text-muted); } .text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; } .text-right { text-align: right; }
.text-center { text-align: center; } .font-bold { font-weight: 700; }

/* =========================================
   🔘 BUTTONS
   ========================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.6rem 1.2rem; border-radius: var(--radius-md); font-weight: 500;
  cursor: pointer; transition: var(--transition); border: 1px solid transparent;
  white-space: nowrap; user-select: none;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; pointer-events: none; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.875rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-secondary { background: var(--bg-surface); color: var(--text-main); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { background: #f8fafc; border-color: #cbd5e1; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover:not(:disabled) { background: #dc2626; }
.btn-success { background: var(--success); color: white; }
.btn-success:hover:not(:disabled) { background: #059669; }
.btn-warning { background: var(--warning); color: white; }
.btn-warning:hover:not(:disabled) { background: #d97706; }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover:not(:disabled) { background: rgba(0,0,0,0.04); color: var(--text-main); }

/* =========================================
   📝 FORMS
   ========================================= */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; margin-bottom: 0.4rem; font-weight: 500; font-size: 0.9rem; color: var(--text-main); }
.form-helper { display: block; margin-top: 0.25rem; font-size: 0.8rem; color: var(--text-muted); }
.form-error { color: var(--danger); font-size: 0.8rem; margin-top: 0.25rem; }

.form-control {
  width: 100%; padding: 0.6rem 0.8rem; background: var(--bg-input);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: var(--transition); color: var(--text-main);
}
.form-control:focus { outline: none; border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.form-control:disabled { background: var(--bg-disabled); color: var(--text-muted); cursor: not-allowed; }
.form-control.is-invalid { border-color: var(--danger); }
textarea.form-control { min-height: 100px; resize: vertical; }

.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.8rem center; padding-right: 2.5rem; }

.form-check { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.form-check input[type="checkbox"], .form-check input[type="radio"] { width: 1rem; height: 1rem; accent-color: var(--primary); cursor: pointer; }

.input-group { display: flex; gap: 0.5rem; align-items: stretch; }
.input-group .form-control { border-radius: var(--radius-md) 0 0 var(--radius-md); }
.input-group .btn { border-radius: 0 var(--radius-md) var(--radius-md) 0; }

/* =========================================
   🃏 CARDS & PANELS
   ========================================= */
.card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); overflow: hidden;
}
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.card.stat-card { padding: 1.25rem 1.5rem; }
.card-header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); background: #fcfcfc; display: flex; justify-content: space-between; align-items: center; }
.card-body { padding: 1.5rem; }
.card-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); background: #f8fafc; display: flex; justify-content: flex-end; gap: 0.5rem; }

.stat-card { text-align: left; display: flex; flex-direction: column; gap: 0.5rem; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--text-main); line-height: 1; }
.stat-label { font-size: 0.875rem; color: var(--text-muted); font-weight: 500; }
.stat-trend { font-size: 0.8rem; display: flex; align-items: center; gap: 0.3rem; }
.trend-up { color: var(--success); } .trend-down { color: var(--danger); }

/* =========================================
   📊 TABLES
   ========================================= */
.table-responsive { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.table, .data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.9rem; }
.table th, .data-table th { background: #f8fafc; padding: 0.8rem 1rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table td, .data-table td { padding: 0.8rem 1rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td, .data-table tr:last-child td { border-bottom: none; }
.table tr:hover td, .data-table tr:hover td { background: #f9fafb; }

.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.9rem; }
.data-table td.row-actions,
.data-table td.actions-cell {
  white-space: nowrap;
}

.row-actions > *,
.data-table td.actions-cell > * {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
}

.row-actions > * + *,
.data-table td.actions-cell > * + * {
  margin-left: 0.3rem;
}

.row-actions form,
.data-table td.actions-cell form {
  display: inline-flex;
  margin: 0;
}

.filter-bar { display: flex; flex-wrap: wrap; gap: 0.8rem; padding: 1.2rem 1.5rem; background: #fafbfc; border-bottom: 1px solid var(--border); align-items: flex-end; }
.filter-bar .form-group { flex: 1; min-width: 160px; margin-bottom: 0; }
.user-avatar { width: 36px; height: 36px; background: var(--primary); color: white; border-radius: 50%; display: grid; place-items: center; font-size: 0.75rem; font-weight: 600; border: none; cursor: pointer; }
.user-avatar:hover { filter: brightness(1.08); }
.account-menu { position: relative; outline: none; }
.account-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 280px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  color: var(--text-main);
}
.account-dropdown-header strong { color: var(--text-main); }
.account-dropdown-body { background: var(--bg-surface); }
.account-menu:focus-within .account-dropdown,
.account-menu.account-open .account-dropdown { display: block; }
.account-dropdown-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.account-dropdown-body { padding: 0.75rem 1rem; }
.account-row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.35rem 0; font-size: 0.9rem; }
.account-label { color: var(--text-muted); }
.account-dropdown-footer { padding: 0.75rem 1rem; border-top: 1px solid var(--border); }
.btn-block { width: 100%; }

.pagination { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-top: 1.5rem; }
.page-btn { padding: 0.4rem 0.8rem; border: 1px solid var(--border); background: var(--bg-surface); border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition); }
.page-btn:hover:not(:disabled) { background: #f1f5f9; }
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.page-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* =========================================
   🏷️ BADGES & ALERTS
   ========================================= */
.badge { display: inline-flex; align-items: center; padding: 0.2rem 0.5rem; border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600; gap: 0.25rem; white-space: nowrap; }
.badge-success { background: var(--success-bg); color: var(--success-text); }
.badge-warning { background: var(--warning-bg); color: var(--warning-text); }
.badge-danger { background: var(--danger-bg); color: var(--danger-text); }
.badge-info { background: var(--info-bg); color: var(--info-text); }
.badge-neutral { background: var(--neutral-bg); color: var(--neutral-text); }

.alert { padding: 0.8rem 1rem; border-radius: var(--radius-md); margin-bottom: 1rem; border-left: 4px solid transparent; display: flex; align-items: flex-start; gap: 0.75rem; }
.alert-success { background: var(--success-bg); color: var(--success-text); border-color: var(--success); }
.alert-warning { background: var(--warning-bg); color: var(--warning-text); border-color: var(--warning); }
.alert-danger { background: var(--danger-bg); color: var(--danger-text); border-color: var(--danger); }
.alert-info { background: var(--info-bg); color: var(--info-text); border-color: var(--info); }

/* =========================================
   🚪 MODALS & OVERLAYS
   ========================================= */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
  opacity: 0; visibility: hidden; transition: var(--transition);
}
.modal-backdrop.active { opacity: 1; visibility: visible; }
.modal {
  background: var(--bg-surface); border-radius: var(--radius-lg); width: 100%; max-width: 550px;
  max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg); transform: translateY(20px); transition: var(--transition);
}
.modal-backdrop.active .modal { transform: translateY(0); }
.modal-header { padding: 1.2rem 1.5rem; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-title { font-size: 1.25rem; font-weight: 600; }
.modal-close { background: none; border: none; cursor: pointer; padding: 0.3rem; color: var(--text-muted); font-size: 1.2rem; }
.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 0.5rem; }

/* =========================================
   🧭 TABS & BREADCRUMB
   ========================================= */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.tab-btn { padding: 0.8rem 1.5rem; background: none; border: none; cursor: pointer; font-weight: 500; color: var(--text-muted); border-bottom: 2px solid transparent; transition: var(--transition); }
.tab-btn:hover { color: var(--text-main); background: rgba(0,0,0,0.02); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-content { display: none; } .tab-content.active { display: block; }

.breadcrumb { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--text-muted); margin-bottom: 1rem; }
.breadcrumb-item a { color: var(--text-muted); }
.breadcrumb-item a:hover { color: var(--primary); text-decoration: underline; }
.breadcrumb-sep { opacity: 0.5; }

/* =========================================
   🏥 ARM POS (Фармацевт-Кассир)
   ========================================= */
.pos-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 1.5rem; height: calc(100vh - 14rem); }
.pos-search-bar { position: relative; margin-bottom: 1rem; }
.pos-search-bar .form-control { padding-left: 2.8rem; border-radius: var(--radius-lg); }
.pos-search-bar .search-icon { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }

.pos-product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.8rem; overflow-y: auto; max-height: calc(100vh - 12rem); padding-right: 0.5rem; align-content: start; }
.pos-item {
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 1rem; cursor: pointer; transition: var(--transition); display: flex; flex-direction: column; height: 100%;
}
.pos-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.pos-item-price { font-weight: 700; color: var(--primary); margin-top: auto; padding-top: 0.5rem; font-size: 1.1rem; }
.pos-item-stock { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.2rem; }

.pos-cart { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg-surface); overflow: hidden; }
.pos-cart-header { padding: 1rem; border-bottom: 1px solid var(--border); background: #f8fafc; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.pos-cart-items { flex: 1; overflow-y: auto; padding: 0.5rem 1rem; }
.pos-cart-item { display: flex; justify-content: space-between; align-items: center; padding: 0.6rem 0; border-bottom: 1px dashed var(--border); font-size: 0.9rem; }
.pos-cart-item .qty-control { display: flex; align-items: center; gap: 0.5rem; }
.pos-cart-item .qty-btn { width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--border); background: white; cursor: pointer; display: grid; place-items: center; font-size: 0.8rem; }
.pos-cart-footer { padding: 1rem; border-top: 1px solid var(--border); background: #f8fafc; }
.pos-cart-total { font-size: 1.3rem; font-weight: 700; display: flex; justify-content: space-between; margin-bottom: 0.8rem; }
.pos-cart-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }

/* =========================================
   📦 СКЛАД & ПАРТИИ (Inventory)
   ========================================= */
.batch-table tr.expiring-soon td { background: rgba(245, 158, 11, 0.08); }
.batch-table tr.expired td { background: rgba(239, 68, 68, 0.1); }
.data-table tr.row-written-off td { background: #fef2f2; }
.data-table tr.row-written-off:hover td { background: #fee2e2; }
.storage-zone { display: inline-block; padding: 0.2rem 0.5rem; background: #e2e8f0; border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 500; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.dot-active { background: var(--success); }
.dot-written-off { background: var(--danger); }
.card-title { font-size: 1.1rem; font-weight: 600; }
.fifo-indicator { font-size: 0.7rem; color: var(--success); font-weight: 600; display: flex; align-items: center; gap: 0.3rem; }
.marking-status { display: flex; align-items: center; gap: 0.3rem; font-size: 0.8rem; }
.marking-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

/* =========================================
   📊 ОТЧЁТНОСТЬ & АУДИТ
   ========================================= */
.report-filters { display: flex; flex-wrap: wrap; gap: 1rem; padding: 1rem; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); margin-bottom: 1.5rem; align-items: flex-end; }
.report-filters .form-group { margin-bottom: 0; flex: 1; min-width: 180px; }
.audit-log-item { display: flex; justify-content: space-between; padding: 0.8rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.audit-log-item:last-child { border-bottom: none; }
.audit-meta { color: var(--text-muted); font-size: 0.75rem; }

/* =========================================
   🔐 БЕЗОПАСНОСТЬ & АВТОРИЗАЦИЯ
   ========================================= */
.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%); }
.auth-card { width: 100%; max-width: 400px; padding: 2rem; background: var(--bg-surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.role-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; margin: 1rem 0; }
.role-checkbox { padding: 0.5rem; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; transition: var(--transition); }
.role-checkbox:hover { background: #f8fafc; }
.role-checkbox input:checked + span { font-weight: 600; color: var(--primary); }

/* =========================================
   🛠 УТИЛИТЫ
   ========================================= */
.flex { display: flex; } .flex-col { flex-direction: column; } .flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-1 { gap: 1rem; } .gap-2 { gap: 2rem; } .gap-05 { gap: 0.5rem; }
.mt-1 { margin-top: 1rem; } .mb-1 { margin-bottom: 1rem; } .mt-2 { margin-top: 2rem; }
.p-1 { padding: 1rem; } .p-2 { padding: 2rem; }
.w-100 { width: 100%; } .h-100 { height: 100%; }
.text-primary { color: var(--primary); } .text-success { color: var(--success); } .text-danger { color: var(--danger); } .text-warning { color: var(--warning); }
.bg-surface { background: var(--bg-surface); } .bg-body { background: var(--bg-body); }
.border { border: 1px solid var(--border); } .rounded { border-radius: var(--radius-md); }
.hidden { display: none !important; } .visible { display: block; }
.cursor-pointer { cursor: pointer; } .select-none { user-select: none; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* =========================================
   📱 АДАПТИВНОСТЬ
   ========================================= */
@media (max-width: 1024px) {
  .pos-layout { grid-template-columns: 1fr; height: auto; }
  .pos-product-grid { max-height: 400px; }
  .sidebar { position: fixed; transform: translateX(-100%); z-index: 999; }
  .sidebar.open { transform: translateX(0); }
}
@media (max-width: 768px) {
  .topbar { padding: 0 1rem; }
  .content-scroll { padding: 1rem; }
  .grid-4 { grid-template-columns: 1fr; }
  .report-filters { flex-direction: column; }
  .pos-cart-actions { grid-template-columns: 1fr; }
}
@media (min-width: 769px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1025px) { .sidebar { transform: translateX(0); } }