/* =====================================================
   PharmaCare Pro - Main Stylesheet
   ===================================================== */
:root {
  --primary: #0d6efd;
  --primary-dark: #0b5ed7;
  --success: #198754;
  --success-light: #d1e7dd;
  --warning: #ffc107;
  --danger: #dc3545;
  --info: #0dcaf0;
  --sidebar-bg: #1a1f2e;
  --sidebar-width: 260px;
  --sidebar-collapsed: 70px;
  --topbar-h: 65px;
  --font: 'Inter', sans-serif;
  --card-radius: 12px;
  --transition: all 0.3s ease;
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-hover: 0 8px 32px rgba(0,0,0,.15);

  /* Light theme */
  --bg: #f0f4f8;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --topbar-bg: #ffffff;
}
[data-theme="dark"] {
  --bg: #0f1117;
  --card-bg: #1a1f2e;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #2d3748;
  --topbar-bg: #1a1f2e;
  --shadow: 0 4px 24px rgba(0,0,0,.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--text); transition: var(--transition); overflow-x: hidden; }
a { text-decoration: none; }

/* ======= SIDEBAR ======= */
.sidebar {
  position: fixed; top: 0; left: 0;
  width: var(--sidebar-width); height: 100vh;
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  transition: var(--transition); z-index: 1000;
  overflow: hidden;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 20px; border-bottom: 1px solid rgba(255,255,255,.08);
  min-height: var(--topbar-h);
}
.brand-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, #0d6efd, #0dcaf0);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px; flex-shrink: 0;
}
.brand-name { color: #fff; font-weight: 700; font-size: 16px; display: block; }
.brand-sub  { color: rgba(255,255,255,.4); font-size: 11px; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 0; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 4px; }
.nav-list { list-style: none; padding: 0; }
.nav-divider {
  padding: 14px 20px 6px;
  color: rgba(255,255,255,.3); font-size: 10px;
  text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600;
}
.sidebar .nav-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 20px; color: rgba(255,255,255,.65);
  font-size: 14px; font-weight: 500; transition: var(--transition);
  border-left: 3px solid transparent; cursor: pointer;
}
.sidebar .nav-link i { width: 18px; text-align: center; font-size: 15px; flex-shrink: 0; }
.sidebar .nav-link:hover, .sidebar .nav-link.active {
  color: #fff; background: rgba(255,255,255,.08);
  border-left-color: var(--primary);
}
.sidebar .nav-link.active { color: #fff; }
.sidebar-footer {
  padding: 16px 20px; border-top: 1px solid rgba(255,255,255,.08);
}
.user-info { display: flex; align-items: center; gap: 10px; }
.user-avatar { font-size: 32px; color: rgba(255,255,255,.5); }
.user-name  { color: #fff; font-size: 13px; font-weight: 600; display: block; }
.user-role  { font-size: 10px; padding: 2px 8px; border-radius: 20px; background: rgba(13,110,253,.3); color: #90cdf4; }

/* ======= MAIN CONTENT ======= */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh; transition: var(--transition);
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }
.sidebar.collapsed .brand-text,
.sidebar.collapsed .nav-link span:not(.badge),
.sidebar.collapsed .nav-divider span,
.sidebar.collapsed .user-details { display: none; }
.sidebar.collapsed + .main-content { margin-left: var(--sidebar-collapsed); }
.sidebar.collapsed .nav-link { justify-content: center; padding: 12px; }
.sidebar.collapsed .nav-link i { width: auto; font-size: 18px; }

/* ======= TOP NAVBAR ======= */
.top-navbar {
  position: sticky; top: 0; z-index: 999;
  height: var(--topbar-h);
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; gap: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.navbar-left, .navbar-right { display: flex; align-items: center; gap: 12px; }
.sidebar-toggle {
  background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text); font-size: 16px; transition: var(--transition);
}
.sidebar-toggle:hover { background: var(--bg); }
.breadcrumb { font-size: 13px; }
.breadcrumb-item a { color: var(--primary); }
.breadcrumb-item.active { color: var(--text-muted); }
.btn-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--bg); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text); font-size: 14px; cursor: pointer; transition: var(--transition);
}
.btn-icon:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.badge-dot {
  position: absolute; top: -4px; right: -4px;
  min-width: 18px; height: 18px; border-radius: 9px;
  background: var(--danger); color: #fff; font-size: 10px;
  font-weight: 700; display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}
.pulse { animation: pulse 2s infinite; }
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* Quick Search */
.quick-search { position: relative; }
.quick-search .form-control { border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: 13px; width: 220px; }
.quick-search .form-control:focus { box-shadow: none; border-color: var(--primary); }
.quick-search .input-group-text { background: var(--bg); border-color: var(--border); color: var(--text-muted); }
.search-dropdown {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow);
  max-height: 300px; overflow-y: auto; z-index: 9999; display: none;
}
.search-item { padding: 10px 14px; border-bottom: 1px solid var(--border); cursor: pointer; font-size: 13px; transition: background .2s; }
.search-item:hover { background: var(--bg); }
.search-item:last-child { border-bottom: none; }

/* User Menu */
.user-menu-btn {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 6px 12px; color: var(--text);
  transition: var(--transition);
}
.user-menu-btn:hover { border-color: var(--primary); }
.user-avatar-sm {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--info));
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px;
}
.user-name-sm { font-size: 13px; font-weight: 600; line-height: 1.2; }
.user-role-sm { font-size: 10px; color: var(--text-muted); }

/* Notifications Dropdown */
.notif-dropdown { width: 340px; padding: 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); }
.notif-header { padding: 14px 16px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: var(--card-bg); }
.notif-header h6 { font-weight: 700; margin: 0; }
.notif-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--card-bg); border-bottom: 1px solid var(--border); transition: background .2s; }
.notif-item:hover { background: var(--bg); }
.notif-icon { width: 36px; height: 36px; border-radius: 9px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px; flex-shrink: 0; }
.notif-text { font-size: 13px; color: var(--text); }
.notif-text small { display: block; color: var(--text-muted); font-size: 11px; margin-top: 2px; }
.notif-footer { padding: 12px 16px; text-align: center; background: var(--card-bg); }
.notif-footer a { color: var(--primary); font-size: 13px; font-weight: 600; }
.user-dropdown { border-radius: 12px; border: 1px solid var(--border); box-shadow: var(--shadow); padding: 8px; min-width: 200px; background: var(--card-bg); }
.user-dropdown .dropdown-item { border-radius: 8px; padding: 9px 12px; font-size: 13px; color: var(--text); transition: background .2s; }
.user-dropdown .dropdown-item:hover { background: var(--bg); }

/* ======= PAGE CONTENT ======= */
.page-content { padding: 24px; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }
.page-title { font-size: 22px; font-weight: 700; color: var(--text); margin: 0; }
.page-subtitle { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* ======= CARDS ======= */
.card {
  background: var(--card-bg); border-radius: var(--card-radius);
  border: 1px solid var(--border); box-shadow: var(--shadow);
  transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-hover); }
.card-header {
  background: transparent; border-bottom: 1px solid var(--border);
  padding: 16px 20px; display: flex; align-items: center; justify-content: space-between;
}
.card-header h5, .card-header h6 { margin: 0; font-weight: 700; font-size: 15px; }
.card-body { padding: 20px; }

/* ======= STAT CARDS ======= */
.stat-card {
  border-radius: var(--card-radius); padding: 22px 20px;
  border: none; position: relative; overflow: hidden;
  transition: var(--transition); cursor: default;
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.stat-card .stat-icon {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 48px; opacity: 0.15;
}
.stat-card .stat-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; opacity: .8; }
.stat-card .stat-value { font-size: 28px; font-weight: 800; line-height: 1.2; margin: 6px 0 4px; }
.stat-card .stat-change { font-size: 12px; opacity: .85; }
.stat-card .stat-change i { margin-right: 3px; }

.stat-primary { background: linear-gradient(135deg, #0d6efd, #6610f2); color: #fff; }
.stat-success { background: linear-gradient(135deg, #198754, #20c997); color: #fff; }
.stat-warning { background: linear-gradient(135deg, #fd7e14, #ffc107); color: #fff; }
.stat-danger  { background: linear-gradient(135deg, #dc3545, #e91e63); color: #fff; }
.stat-info    { background: linear-gradient(135deg, #0dcaf0, #0d6efd); color: #fff; }
.stat-purple  { background: linear-gradient(135deg, #6f42c1, #e83e8c); color: #fff; }

/* ======= TABLES ======= */
.table { color: var(--text); }
.table thead th { background: var(--bg); color: var(--text-muted); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; border-bottom: 2px solid var(--border); padding: 12px 14px; white-space: nowrap; }
.table tbody td { padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 13.5px; vertical-align: middle; }
.table tbody tr:hover { background: rgba(13,110,253,.04); }
.table tbody tr:last-child td { border-bottom: none; }
.dataTables_wrapper .dataTables_filter input { border: 1px solid var(--border); border-radius: 8px; padding: 6px 12px; background: var(--card-bg); color: var(--text); font-size: 13px; }
.dataTables_wrapper .dataTables_length select { border: 1px solid var(--border); border-radius: 8px; padding: 4px 8px; background: var(--card-bg); color: var(--text); }
.dataTables_wrapper .dataTables_info, .dataTables_wrapper .dataTables_paginate { font-size: 13px; }
.page-link { color: var(--primary); background: var(--card-bg); border-color: var(--border); }
.page-item.active .page-link { background: var(--primary); border-color: var(--primary); }

/* ======= BADGES ======= */
.badge-status { padding: 4px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.badge-status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; display: inline-block; }
.badge-active   { background: var(--success-light); color: var(--success); }
.badge-inactive { background: #fde8e8; color: var(--danger); }
.badge-pending  { background: #fff3cd; color: #856404; }
.badge-partial  { background: #cfe2ff; color: #0a58ca; }

/* ======= FORMS ======= */
.form-label { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-control, .form-select {
  background: var(--card-bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 13px; font-size: 13.5px; transition: border-color .2s;
}
.form-control:focus, .form-select:focus {
  background: var(--card-bg); color: var(--text);
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(13,110,253,.12);
}
.form-control::placeholder { color: var(--text-muted); }
.input-group-text { background: var(--bg); border-color: var(--border); color: var(--text-muted); }
.invalid-feedback { font-size: 12px; }

/* ======= BUTTONS ======= */
.btn { border-radius: 8px; font-weight: 600; font-size: 13.5px; transition: var(--transition); }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-1px); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; border-radius: 6px; }

/* ======= NAV TABS ======= */
.nav-tabs { border-bottom-color: var(--border); }
.nav-tabs .nav-link {
  color: var(--text-muted); font-weight: 600; font-size: 13.5px;
  border: 1px solid transparent; border-radius: 8px 8px 0 0;
  padding: 10px 18px; transition: var(--transition);
}
.nav-tabs .nav-link:hover {
  color: var(--primary); border-color: transparent;
  background: rgba(13,110,253,.06);
}
.nav-tabs .nav-link.active {
  color: var(--primary); background: var(--card-bg);
  border-color: var(--border) var(--border) var(--card-bg);
  font-weight: 700;
}

/* ======= POS BILLING ======= */
.pos-layout { display: grid; grid-template-columns: 1fr 380px; gap: 20px; min-height: calc(100vh - 130px); }
.pos-left { display: flex; flex-direction: column; gap: 16px; }
.pos-right { background: var(--card-bg); border-radius: var(--card-radius); border: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; }
.pos-cart-header { padding: 16px; border-bottom: 1px solid var(--border); }
.pos-cart-body { flex: 1; overflow-y: auto; padding: 12px; }
.pos-cart-footer { padding: 16px; border-top: 1px solid var(--border); background: var(--bg); }
.cart-item { background: var(--bg); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.cart-item-name { font-size: 13px; font-weight: 600; flex: 1; }
.cart-item-price { font-size: 12px; color: var(--text-muted); }
.cart-qty-btn { width: 26px; height: 26px; border-radius: 6px; border: 1px solid var(--border); background: var(--card-bg); cursor: pointer; font-size: 14px; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.cart-qty-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.cart-qty-input { width: 44px; text-align: center; border: 1px solid var(--border); border-radius: 6px; padding: 3px; font-size: 13px; background: var(--card-bg); color: var(--text); }
.pos-summary-row { display: flex; justify-content: space-between; padding: 5px 0; font-size: 13px; }
.pos-summary-row.total { font-size: 18px; font-weight: 800; color: var(--primary); padding-top: 10px; border-top: 2px solid var(--border); margin-top: 5px; }

/* Customer Search Dropdown */
.customer-search-dropdown {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow-hover);
  max-height: 280px; overflow-y: auto; z-index: 9999;
  display: none; margin-top: 4px;
}
.cust-result {
  padding: 10px 14px; cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background .2s;
}
.cust-result:last-child { border-bottom: none; }
.cust-result:hover { background: var(--bg); }
.cust-avatar {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--info));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; flex-shrink: 0;
}
.cust-no-result { padding: 16px; text-align: center; font-size: 13px; color: var(--text-muted); }
#customerSearch.border-success { border-color: var(--success) !important; box-shadow: 0 0 0 3px rgba(25,135,84,.12); }

/* ======= INVOICE ======= */
.invoice-box { max-width: 800px; margin: 0 auto; background: #fff; padding: 40px; border: 1px solid #e0e0e0; font-size: 14px; color: #333; }
.invoice-box table { width: 100%; border-collapse: collapse; }
.invoice-box table td { padding: 8px; }
.invoice-box table tr.top td { padding-bottom: 20px; }
.invoice-box table tr.heading td { background: #0d6efd; color: #fff; font-weight: 700; padding: 10px 8px; }
.invoice-box table tr.item td { border-bottom: 1px solid #eee; }
.invoice-box table tr.total td { font-weight: 700; font-size: 15px; }

/* ======= ALERTS & MODALS ======= */
.alert { border-radius: 10px; border: none; font-size: 13.5px; }
.modal-content { background: var(--card-bg); border: 1px solid var(--border); border-radius: 14px; }
.modal-header { border-bottom-color: var(--border); }
.modal-footer { border-top-color: var(--border); }

/* ======= LOGIN PAGE ======= */
.login-page {
  min-height: 100vh; background: linear-gradient(135deg, #0d6efd 0%, #6610f2 50%, #0dcaf0 100%);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.login-card {
  width: 100%; max-width: 440px; background: rgba(255,255,255,.97);
  border-radius: 20px; padding: 44px 40px;
  box-shadow: 0 30px 80px rgba(0,0,0,.25);
  animation: slideUp .5s ease;
}
@keyframes slideUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .icon { width: 64px; height: 64px; border-radius: 16px; background: linear-gradient(135deg,#0d6efd,#0dcaf0); display:flex; align-items:center; justify-content:center; margin:0 auto 12px; color:#fff; font-size:28px; }
.login-logo h3 { font-weight: 800; font-size: 22px; color: #1e293b; margin: 0; }
.login-logo p { color: #64748b; font-size: 13px; margin: 4px 0 0; }
.login-card .form-control { background: #f8fafc; border-color: #e2e8f0; border-radius: 10px; padding: 12px 14px; font-size: 14px; }
.login-card .form-control:focus { border-color: #0d6efd; box-shadow: 0 0 0 3px rgba(13,110,253,.15); }
.btn-login { width: 100%; padding: 13px; font-size: 15px; font-weight: 700; border-radius: 10px; background: linear-gradient(135deg,#0d6efd,#0b5ed7); border: none; color: #fff; transition: var(--transition); }
.btn-login:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(13,110,253,.4); }
.demo-creds { background: #f0f9ff; border-radius: 10px; padding: 12px 14px; margin-top: 20px; font-size: 12px; color: #0369a1; border: 1px solid #bae6fd; }
.demo-creds strong { display: block; margin-bottom: 4px; font-size: 12px; }

/* ======= SCROLLBAR ======= */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100,116,139,.3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(100,116,139,.5); }

/* ======= CHART CONTAINERS ======= */
.chart-container { position: relative; height: 280px; }

/* ======= RESPONSIVE ======= */
@media (max-width: 991px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-content { margin-left: 0 !important; }
  .pos-layout { grid-template-columns: 1fr; }
}
@media (max-width: 576px) {
  .page-content { padding: 16px; }
  .stat-card .stat-value { font-size: 22px; }
  .login-card { padding: 28px 22px; }
}

/* ======= ANIMATIONS ======= */
.fade-in { animation: fadeIn .4s ease; }
@keyframes fadeIn { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }

/* ======= MISC ======= */
.text-primary { color: var(--primary) !important; }
.text-muted { color: var(--text-muted) !important; }
.border-top { border-top-color: var(--border) !important; }
.bg-light { background: var(--bg) !important; }