/* ============================================
   Yassy Store - Inventory Management System
   Main Stylesheet
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&display=swap');

/* ── Reset & Base ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f1117;
  --bg-2:        #161922;
  --bg-3:        #1e2230;
  --surface:     #242838;
  --surface-2:   #2d3347;
  --border:      #2f3548;
  --border-2:    #3d4460;
  --text:        #e8eaf2;
  --text-2:      #9ba3c0;
  --text-3:      #636b87;
  --accent:      #5b8dee;
  --accent-2:    #7aa3f4;
  --accent-glow: rgba(91,141,238,0.18);
  --green:       #22c87a;
  --green-bg:    rgba(34,200,122,0.12);
  --amber:       #f5a623;
  --amber-bg:    rgba(245,166,35,0.12);
  --red:         #f04f5e;
  --red-bg:      rgba(240,79,94,0.12);
  --purple:      #a78bfa;
  --purple-bg:   rgba(167,139,250,0.12);
  --radius:      12px;
  --radius-sm:   8px;
  --radius-lg:   18px;
  --shadow:      0 4px 20px rgba(0,0,0,0.35);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.5);
  --transition:  all 0.2s ease;
  --sidebar-w:   260px;
  --header-h:    64px;
  --font-display:'Syne', sans-serif;
  --font-body:   'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Scrollbar ────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ── Typography ───────────────────────────── */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.text-lg { font-size: 16px; }
.text-xl { font-size: 20px; }
.text-2xl { font-size: 24px; }
.text-muted { color: var(--text-2); }
.text-faint { color: var(--text-3); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ── Layout ───────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 0 18px var(--accent-glow);
}

.sidebar-logo .logo-text {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
}

.sidebar-logo .logo-text span { color: var(--accent); }

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

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

.nav-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 0 8px;
  margin-bottom: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  margin-bottom: 2px;
  position: relative;
}

.nav-item:hover {
  background: var(--surface);
  color: var(--text);
}

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent-2);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 20px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.nav-item .nav-icon {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.nav-item .nav-badge {
  margin-left: auto;
  background: var(--red);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 99px;
  min-width: 18px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.user-profile:hover { background: var(--surface); }

.avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: white;
  flex-shrink: 0;
}

.user-info .user-name {
  font-weight: 600;
  font-size: 13px;
  line-height: 1.2;
}

.user-info .user-role {
  font-size: 11px;
  color: var(--text-3);
}

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

.topbar {
  height: var(--header-h);
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
}

.topbar-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  flex: 1;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.menu-toggle {
  display: none;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-2);
  font-size: 18px;
  transition: var(--transition);
}

.menu-toggle:hover { background: var(--surface-2); color: var(--text); }

.page-content {
  flex: 1;
  padding: 28px;
  overflow-x: hidden;
}

/* ── Cards ────────────────────────────────── */
.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
}

/* ── Stat Cards ───────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}

.stat-card.blue::before { background: var(--accent); }
.stat-card.green::before { background: var(--green); }
.stat-card.amber::before { background: var(--amber); }
.stat-card.red::before { background: var(--red); }

.stat-icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}

.stat-icon.blue { background: var(--accent-glow); }
.stat-icon.green { background: var(--green-bg); }
.stat-icon.amber { background: var(--amber-bg); }
.stat-icon.red { background: var(--red-bg); }

.stat-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
}

/* ── Buttons ──────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 0 20px rgba(91,141,238,0.3);
}
.btn-primary:hover {
  background: var(--accent-2);
  box-shadow: 0 0 28px rgba(91,141,238,0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface-2);
  border-color: var(--border-2);
}

.btn-danger {
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid rgba(240,79,94,0.25);
}
.btn-danger:hover {
  background: var(--red);
  color: white;
}

.btn-success {
  background: var(--green-bg);
  color: var(--green);
  border: 1px solid rgba(34,200,122,0.25);
}
.btn-success:hover {
  background: var(--green);
  color: white;
}

.btn-icon {
  width: 34px; height: 34px;
  padding: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 15px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* ── Badges / Status ──────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11.5px;
  font-weight: 600;
}

.badge-green { background: var(--green-bg); color: var(--green); }
.badge-amber { background: var(--amber-bg); color: var(--amber); }
.badge-red   { background: var(--red-bg);   color: var(--red); }
.badge-blue  { background: var(--accent-glow); color: var(--accent-2); }
.badge-purple{ background: var(--purple-bg); color: var(--purple); }

/* ── Table ────────────────────────────────── */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

thead th {
  background: var(--surface);
  color: var(--text-2);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

thead th:hover { color: var(--text); }

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

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

tbody td {
  padding: 13px 16px;
  color: var(--text);
  vertical-align: middle;
}

.sort-icon { font-size: 10px; margin-left: 4px; opacity: 0.5; }
.sort-icon.active { opacity: 1; color: var(--accent); }

/* ── Forms ────────────────────────────────── */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 7px;
}

.form-control {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 14px;
  font-size: 14px;
  transition: var(--transition);
  outline: none;
  -webkit-appearance: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder { color: var(--text-3); }

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%239ba3c0' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
  cursor: pointer;
}

select.form-control option {
  background: var(--surface);
  color: var(--text);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  font-size: 11.5px;
  color: var(--text-3);
  margin-top: 5px;
}

.form-error {
  font-size: 12px;
  color: var(--red);
  margin-top: 5px;
}

/* ── Modal ────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease;
}

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

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px) scale(0.98); } to { opacity: 1; transform: none; } }

.modal {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.25s ease;
}

.modal-lg { max-width: 720px; }
.modal-sm { max-width: 420px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px 18px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
}

.modal-close {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-2);
  font-size: 17px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.modal-close:hover { background: var(--red-bg); color: var(--red); }

.modal-body { padding: 22px 24px; }
.modal-footer {
  padding: 16px 24px 22px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* ── Search Bar ───────────────────────────── */
.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-bar input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 9px 14px 9px 38px;
  font-size: 13.5px;
  width: 260px;
  outline: none;
  transition: var(--transition);
}

.search-bar input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  width: 300px;
}

.search-bar .search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-3);
  font-size: 14px;
  pointer-events: none;
}

/* ── Toolbar ──────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.toolbar-right { margin-left: auto; display: flex; gap: 10px; }

/* ── Pagination ───────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-2);
}

.pagination-controls {
  display: flex;
  gap: 4px;
}

.page-btn {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.page-btn:hover, .page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Toast Notifications ──────────────────── */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
  min-width: 280px;
  max-width: 380px;
  pointer-events: all;
  animation: toastIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.toast.out { animation: toastOut 0.3s ease forwards; }

@keyframes toastIn { from { opacity: 0; transform: translateX(30px) scale(0.95); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateX(30px) scale(0.95); } }

.toast-icon { font-size: 18px; flex-shrink: 0; }
.toast-body { flex: 1; }
.toast-title { font-weight: 600; font-size: 13.5px; }
.toast-msg { font-size: 12.5px; color: var(--text-2); }

.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.warning { border-left: 3px solid var(--amber); }
.toast.info    { border-left: 3px solid var(--accent); }

/* ── Empty State ──────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-icon {
  font-size: 52px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 13.5px;
  color: var(--text-2);
  margin-bottom: 20px;
}

/* ── Charts ───────────────────────────────── */
.chart-wrapper {
  position: relative;
  height: 200px;
}

/* ── Activity Feed ────────────────────────── */
.activity-feed { display: flex; flex-direction: column; gap: 0; }

.activity-item {
  display: flex;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
}

.activity-item:last-child { border-bottom: none; }

.activity-dot {
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
  margin-top: 2px;
}

.activity-content { flex: 1; }
.activity-title { font-weight: 500; font-size: 13.5px; margin-bottom: 2px; }
.activity-meta { font-size: 12px; color: var(--text-3); }

/* ── Color Dot ────────────────────────────── */
.color-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
}

/* ── Auth Pages ───────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(91,141,238,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.auth-page::after {
  content: '';
  position: absolute;
  bottom: -200px; left: -200px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(34,200,122,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.auth-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px 44px;
  width: 100%;
  max-width: 430px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}

.auth-logo .logo-icon {
  width: 44px; height: 44px;
  background: var(--accent);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  box-shadow: 0 0 24px var(--accent-glow);
}

.auth-logo .logo-text {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
}

.auth-logo .logo-text span { color: var(--accent); }

.auth-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  text-align: center;
}

.auth-subtitle {
  font-size: 14px;
  color: var(--text-2);
  text-align: center;
  margin-bottom: 30px;
}

.auth-divider {
  text-align: center;
  position: relative;
  margin: 22px 0;
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 1px;
  background: var(--border);
}

.auth-divider span {
  background: var(--bg-2);
  padding: 0 12px;
  position: relative;
  font-size: 12px;
  color: var(--text-3);
}

.auth-link {
  text-align: center;
  font-size: 13.5px;
  color: var(--text-2);
  margin-top: 20px;
}

.auth-link a { color: var(--accent-2); font-weight: 600; }
.auth-link a:hover { text-decoration: underline; }

/* ── Grid Layouts ─────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; }

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* ── Dashboard specific ───────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 18px;
}

/* ── Confirm Dialog ───────────────────────── */
.confirm-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--red-bg);
  color: var(--red);
  font-size: 26px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
}

/* ── Loading ──────────────────────────────── */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,17,23,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  z-index: 10;
}

/* ── Overlay sidebar ──────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 99;
}

/* ── Responsive ───────────────────────────── */
@media (max-width: 1200px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  :root { --sidebar-w: 0px; }

  .sidebar {
    transform: translateX(-260px);
    width: 260px;
    box-shadow: 4px 0 24px rgba(0,0,0,0.5);
  }

  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .menu-toggle { display: flex; }
  .main-content { margin-left: 0; }
  .page-content { padding: 18px; }
  /* Disable sticky topbar on mobile to prevent floating issues */
  .topbar { position: relative; padding: 0 18px; }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .auth-card { padding: 28px 22px; }
  .toolbar { gap: 6px; }
  .search-bar input { width: 100%; }
  .search-bar input:focus { width: 100%; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-right { margin-left: 0; }

  /* Mobile Topbar Fixes */
  .topbar { position: relative; height: auto; padding: 12px 18px; flex-wrap: wrap; }
  .topbar-title { font-size: 17px; margin-bottom: 0; }
  .topbar-actions { width: 100%; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); justify-content: space-between; }
  
  /* Mobile Grid Fixes */
  .category-grid { grid-template-columns: 1fr; }
  
  /* Form Fixes */
  select.form-control[style] { width: 100% !important; max-width: 100% !important; }
}

/* ── Utility ──────────────────────────────── */
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-4 { margin-top: 16px; }
.w-full { width: 100%; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Chart Helpers ────────────────────────── */
.chart-legend-wrapper {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 190px;
}
.chart-legend-wrapper canvas {
  flex: 1;
  height: 100%;
}
.legend-items {
  flex-shrink: 0;
  width: 160px;
}

@media (max-width: 600px) {
  .page-content { padding: 16px; }
  .card { padding: 16px; }
  
  .chart-legend-wrapper { flex-direction: column; height: auto; }
  .chart-legend-wrapper canvas { width: 100%; height: 200px; margin-bottom: 16px; flex: none; }
  .legend-items { width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  
  .activity-item { gap: 10px; }
  .activity-dot { width: 28px; height: 28px; font-size: 13px; }
  
  .modal { width: 92%; margin: 10px; max-height: 90vh; }
  
  th, td { padding: 10px 12px; }
}