@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Hind+Siliguri:wght@400;500;600&display=swap');

/* ============================================================
   RUPCHARCHA CONTENT AI — Complete Design System
   ============================================================ */

:root {
  /* Base backgrounds */
  --bg-base:     #06080f;
  --bg-surface:  #0d1117;
  --bg-card:     #111827;
  --bg-elevated: #172033;
  --bg-hover:    #1a2540;
  --bg-input:    #0f1623;

  /* Borders */
  --border:         rgba(255,255,255,0.06);
  --border-soft:    rgba(255,255,255,0.04);
  --border-hover:   rgba(255,255,255,0.12);
  --border-purple:  rgba(168,85,247,0.3);

  /* Primary colors */
  --purple:       #a855f7;
  --purple-light: #c084fc;
  --purple-pale:  #d8b4fe;
  --purple-dim:   rgba(168,85,247,0.12);
  --purple-glow:  rgba(168,85,247,0.2);

  /* Accent */
  --rose:         #f472b6;
  --rose-dim:     rgba(244,114,182,0.1);

  /* Semantic */
  --success:      #4ade80;
  --success-dim:  rgba(74,222,128,0.1);
  --success-border: rgba(74,222,128,0.25);
  --warning:      #fbbf24;
  --warning-dim:  rgba(251,191,36,0.1);
  --warning-border: rgba(251,191,36,0.25);
  --danger:       #f87171;
  --danger-dim:   rgba(248,113,113,0.1);
  --danger-border: rgba(248,113,113,0.25);
  --info:         #60a5fa;
  --info-dim:     rgba(96,165,250,0.1);
  --info-border:  rgba(96,165,250,0.25);

  /* Text */
  --text-primary:   #f0f4ff;
  --text-secondary: #94a3b8;
  --text-tertiary:  #4b5880;
  --text-purple:    #c4b5fd;
  --text-muted:     #374151;

  /* Layout */
  --sidebar-w:    240px;
  --header-h:     60px;
  --radius-xs:    4px;
  --radius-sm:    8px;
  --radius-md:    12px;
  --radius-lg:    16px;
  --radius-xl:    24px;
  --radius-full:  9999px;

  /* Shadows */
  --shadow-sm:     0 1px 4px rgba(0,0,0,0.4);
  --shadow-md:     0 4px 24px rgba(0,0,0,0.5);
  --shadow-lg:     0 16px 48px rgba(0,0,0,0.6);
  --shadow-purple: 0 0 40px rgba(168,85,247,0.15);
  --shadow-glow:   0 0 0 3px rgba(168,85,247,0.2);

  /* Fonts */
  --font-ui:      'Inter', -apple-system, sans-serif;
  --font-bengali: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;

  /* Transitions */
  --t-fast:  0.12s ease;
  --t-base:  0.22s ease;
  --t-slow:  0.35s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-ui);
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--purple-light); text-decoration: none; }
a:hover { color: var(--purple-pale); }
img { max-width: 100%; }
button { cursor: pointer; font-family: var(--font-ui); }
input, select, textarea { font-family: var(--font-ui); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-elevated); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ============================================================
   LAYOUT
   ============================================================ */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border-soft);
}
.sidebar-logo .brand-name {
  font-family: var(--font-bengali);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 1px;
}
.sidebar-logo .brand-sub {
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 2px;
  margin-top: 2px;
}
.brand-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--purple);
  margin-right: 6px;
  box-shadow: 0 0 8px var(--purple);
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
}
.nav-section-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--text-tertiary);
  padding: 14px 10px 6px;
  text-transform: uppercase;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  transition: background var(--t-fast), color var(--t-fast);
  margin-bottom: 2px;
}
.nav-link:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}
.nav-link.active {
  background: var(--purple-dim);
  color: var(--purple-light);
  border: 1px solid var(--border-purple);
}
.nav-link .nav-icon {
  width: 18px;
  text-align: center;
  font-size: 14px;
  opacity: 0.8;
}
.nav-link.active .nav-icon { opacity: 1; }

.sidebar-user {
  padding: 14px;
  border-top: 1px solid var(--border-soft);
  margin-top: auto;
}
.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.user-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--purple-dim);
  border: 1px solid var(--border-purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600;
  color: var(--purple-light);
  flex-shrink: 0;
}
.user-name  { font-size: 13px; font-weight: 500; color: var(--text-primary); }
.user-role  { font-size: 11px; color: var(--text-tertiary); }
.btn-logout {
  display: flex; align-items: center; gap: 6px;
  margin-top: 10px;
  padding: 7px 10px;
  width: 100%;
  border: none;
  background: var(--danger-dim);
  color: var(--danger);
  border-radius: var(--radius-sm);
  font-size: 12px;
  transition: background var(--t-fast);
}
.btn-logout:hover { background: rgba(248,113,113,0.18); }

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

.page-header {
  padding: 28px 32px 0;
}
.page-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.page-body {
  padding: 24px 32px 40px;
  flex: 1;
}

/* ============================================================
   COMPONENTS
   ============================================================ */

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--t-base);
}
.card:hover { border-color: var(--border-hover); }
.card-body { padding: 20px; }
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}
.card-subtitle {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* ---- Stat Cards ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-base), transform var(--t-base);
}
.stat-card:hover { border-color: var(--border-hover); transform: translateY(-1px); }
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  border-radius: 50%;
  opacity: 0.06;
  transform: translate(20px,-20px);
}
.stat-card.purple::before { background: var(--purple); }
.stat-card.rose::before   { background: var(--rose); }
.stat-card.green::before  { background: var(--success); }
.stat-card.blue::before   { background: var(--info); }
.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 11px;
  color: var(--text-tertiary);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.stat-icon {
  position: absolute;
  top: 18px; right: 18px;
  font-size: 18px;
  opacity: 0.5;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  border: none;
  transition: all var(--t-fast);
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--purple);
  color: #fff;
  box-shadow: 0 2px 12px rgba(168,85,247,0.35);
}
.btn-primary:hover:not(:disabled) {
  background: var(--purple-light);
  box-shadow: 0 4px 20px rgba(168,85,247,0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}
.btn-danger:hover:not(:disabled) { background: rgba(248,113,113,0.2); }

.btn-success {
  background: var(--success-dim);
  color: var(--success);
  border: 1px solid var(--success-border);
}
.btn-success:hover:not(:disabled) { background: rgba(74,222,128,0.18); }

.btn-lg { padding: 12px 24px; font-size: 14px; border-radius: var(--radius-md); }
.btn-sm { padding: 5px 11px; font-size: 12px; border-radius: var(--radius-xs); }
.btn-full { width: 100%; justify-content: center; }

/* ---- Form Elements ---- */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.4px;
}
.form-label span.req { color: var(--danger); margin-left: 3px; }

.form-control {
  width: 100%;
  padding: 10px 13px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  outline: none;
}
.form-control::placeholder { color: var(--text-tertiary); }
.form-control:focus {
  border-color: var(--purple);
  box-shadow: var(--shadow-glow);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234b5880' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

textarea.form-control { resize: vertical; min-height: 100px; }

.form-hint {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 500;
}
.badge-purple { background: var(--purple-dim); color: var(--purple-light); border: 1px solid var(--border-purple); }
.badge-green  { background: var(--success-dim); color: var(--success); border: 1px solid var(--success-border); }
.badge-yellow { background: var(--warning-dim); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-red    { background: var(--danger-dim);  color: var(--danger);  border: 1px solid var(--danger-border); }
.badge-blue   { background: var(--info-dim);    color: var(--info);    border: 1px solid var(--info-border); }
.badge-gray   { background: rgba(255,255,255,0.05); color: var(--text-secondary); border: 1px solid var(--border); }

/* ---- Table ---- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-secondary);
  vertical-align: middle;
}
.data-table tr:hover td { background: var(--bg-elevated); color: var(--text-primary); }
.data-table tr:last-child td { border-bottom: none; }

/* ---- Content Type Grid ---- */
.type-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}
.type-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 12px 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 12px;
  font-family: var(--font-bengali);
  transition: all var(--t-fast);
  text-align: center;
  line-height: 1.3;
}
.type-btn:hover {
  background: var(--bg-elevated);
  border-color: var(--border-hover);
  color: var(--text-primary);
}
.type-btn.active {
  background: var(--purple-dim);
  border-color: var(--purple);
  color: var(--purple-light);
  box-shadow: 0 0 20px rgba(168,85,247,0.1);
}
.type-btn .type-icon { font-size: 20px; line-height: 1; }
.type-btn .type-name { font-size: 11px; font-weight: 500; }
.type-btn .type-sub  { font-size: 9px; color: var(--text-tertiary); font-family: var(--font-ui); }
.type-btn.active .type-sub { color: var(--purple-pale); }

/* ---- Loading / Skeleton ---- */
.loading-dots {
  display: flex;
  gap: 6px;
  justify-content: center;
  align-items: center;
}
.loading-dots span {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--purple);
  animation: dotPulse 1.2s ease-in-out infinite;
}
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dotPulse {
  0%, 80%, 100% { opacity: 0.2; transform: scale(0.8); }
  40%           { opacity: 1;   transform: scale(1.1); }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-hover) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---- Toast Notifications ---- */
.toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.25s ease;
  max-width: 340px;
}
.toast.success { border-color: var(--success-border); }
.toast.error   { border-color: var(--danger-border);  }
.toast.info    { border-color: var(--info-border);    }
@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: translateX(0);   opacity: 1; }
}

/* ---- Blog Output (generator) ---- */
.output-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.output-section {
  padding: 22px 26px;
  border-bottom: 1px solid var(--border-soft);
}
.output-section:last-child { border-bottom: none; }
.output-section-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 14px;
}
.blog-headline {
  font-family: var(--font-bengali);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 8px;
}
.blog-subtitle {
  font-family: var(--font-bengali);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.blog-body {
  font-family: var(--font-bengali);
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
}
.blog-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 22px 0 8px;
}
.blog-body p { margin-bottom: 14px; }

.seo-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
.seo-field label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin-bottom: 4px;
  display: block;
}
.seo-field p { font-size: 13px; color: var(--text-primary); line-height: 1.5; }
.char-ok  { color: var(--success); }
.char-bad { color: var(--danger); }

.keyword-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.keyword-chip {
  padding: 3px 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 11px;
  color: var(--text-secondary);
}

.dos-donts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.dos-box, .donts-box {
  border-radius: var(--radius-md);
  overflow: hidden;
}
.dos-box  { border: 1px solid var(--success-border); }
.donts-box { border: 1px solid var(--danger-border);  }
.dos-header {
  padding: 8px 14px;
  background: var(--success-dim);
  color: var(--success);
  font-size: 12px;
  font-weight: 600;
}
.donts-header {
  padding: 8px 14px;
  background: var(--danger-dim);
  color: var(--danger);
  font-size: 12px;
  font-weight: 600;
}
.dos-item, .donts-item {
  display: flex;
  gap: 8px;
  padding: 9px 14px;
  font-family: var(--font-bengali);
  font-size: 13px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-soft);
  line-height: 1.55;
}
.dos-item  .check { color: var(--success); flex-shrink: 0; font-weight: 700; }
.donts-item .cross { color: var(--danger);  flex-shrink: 0; font-weight: 700; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}
.product-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--t-fast);
}
.product-card:hover { border-color: var(--border-hover); }
.product-price { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.product-name  { font-family: var(--font-bengali); font-size: 14px; font-weight: 600; margin: 2px 0; }
.product-brand { font-size: 12px; color: var(--text-tertiary); }
.product-reason { font-family: var(--font-bengali); font-size: 12px; color: var(--text-secondary); margin-top: 8px; flex: 1; line-height: 1.5; }
.product-avail { font-size: 11px; color: var(--text-tertiary); margin-top: 8px; }

.faq-item { border-bottom: 1px solid var(--border-soft); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 13px 0;
  background: none;
  border: none;
  text-align: left;
  gap: 12px;
  cursor: pointer;
}
.faq-question span:first-child {
  font-family: var(--font-bengali);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
}
.faq-arrow { font-size: 10px; color: var(--text-tertiary); flex-shrink: 0; transition: transform var(--t-fast); }
.faq-answer {
  font-family: var(--font-bengali);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  padding-bottom: 14px;
  display: none;
}
.faq-answer.open { display: block; }
.faq-arrow.open  { transform: rotate(180deg); }

/* ---- Output Action Bar ---- */
.output-actions {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* ---- Keyword Cloud ---- */
.kw-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 4px 0;
}
.kw-tag {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--t-fast);
}
.kw-tag:hover { border-color: var(--purple); color: var(--purple-light); }
.kw-tag.freq-high  { background: var(--purple-dim); border-color: var(--border-purple); color: var(--purple-light); font-size: 15px; }
.kw-tag.freq-med   { font-size: 13px; color: var(--text-primary); }

/* ---- Gap Suggestion Cards ---- */
.gap-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  transition: border-color var(--t-fast);
  cursor: pointer;
}
.gap-card:hover { border-color: var(--purple); }
.gap-card .gap-icon { font-size: 18px; }
.gap-card .gap-text { font-size: 13px; color: var(--text-primary); }
.gap-card .gap-action { margin-left: auto; font-size: 11px; color: var(--text-tertiary); }

/* ---- History Filters ---- */
.filter-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.filter-bar .form-control { width: auto; }
.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}
.search-input-wrap input { padding-left: 36px; }
.search-icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 13px;
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 520px;
  padding: 28px;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--t-base);
  box-shadow: var(--shadow-lg);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ---- Dividers ---- */
.divider {
  height: 1px;
  background: var(--border-soft);
  margin: 20px 0;
}

/* ---- Grid helpers ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

/* ---- Login Page ---- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  position: relative;
  overflow: hidden;
}
.login-page::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168,85,247,0.08) 0%, transparent 70%);
  top: -200px; left: -200px;
  pointer-events: none;
}
.login-page::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244,114,182,0.05) 0%, transparent 70%);
  bottom: -100px; right: -100px;
  pointer-events: none;
}
.login-box {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-purple);
}
.login-brand {
  text-align: center;
  margin-bottom: 28px;
}
.login-logo-text {
  font-family: var(--font-bengali);
  font-size: 26px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 2px;
}
.login-tagline {
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 2px;
  margin-top: 4px;
}
.login-error {
  background: var(--danger-dim);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--danger);
  margin-bottom: 16px;
  display: none;
}

/* ---- Chart containers ---- */
.chart-wrap {
  position: relative;
  height: 200px;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .type-grid { grid-template-columns: repeat(3, 1fr); }
  .seo-meta-grid, .dos-donts-grid, .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-body { padding: 16px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .type-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.text-muted  { color: var(--text-tertiary); }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.flex   { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center  { display: flex; align-items: center; }
.flex-wrap    { flex-wrap: wrap; }
.hidden { display: none !important; }

/* ---- Preloader ---- */
.page-loading {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.4s;
}
.page-loading.fade { opacity: 0; pointer-events: none; }