:root {
  --primary: #1A56DB;
  --primary-light: #3B82F6;
  --sky-accent: #BFDBFE;
  --bg: #EFF6FF;
  --white: #FFFFFF;
  --text: #1E293B;
  --muted: #64748B;
  --border: #E2E8F0;
  --success: #10B981;
  --error: #EF4444;
  --warning: #F59E0B;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 4px 20px rgba(26, 86, 219, 0.08);
  --sidebar-width: 260px;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
}

a { text-decoration: none; color: inherit; }

/* SIDEBAR */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  height: 100vh;
  width: var(--sidebar-width);
  background: var(--white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  box-shadow: 2px 0 12px rgba(26, 86, 219, 0.04);
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
}

.sidebar-logo .logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.sidebar-logo .logo-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 1px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
  min-height: 0;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 8px;
  margin: 12px 0 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius);
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s;
  cursor: pointer;
}

.nav-item:hover {
  background: var(--bg);
  color: var(--primary);
}

.nav-item.active {
  background: var(--bg);
  color: var(--primary);
  border-left: 3px solid var(--primary);
  font-weight: 600;
}

.nav-item i {
  font-size: 18px;
  width: 22px;
  text-align: center;
}

.nav-badge {
  margin-left: auto;
  background: var(--error);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 20px;
}

.sidebar-user {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}

.user-info .user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

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

/* MAIN LAYOUT */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-bell {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--muted);
  font-size: 18px;
  background: var(--white);
  transition: all 0.15s;
}

.topbar-bell:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.page-content {
  padding: 32px;
}

/* CARDS */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.card-body {
  padding: 24px;
}

/* STAT CARDS */
.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(26, 86, 219, 0.05);
}

.stat-card.success { border-left-color: var(--success); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.error { border-left-color: var(--error); }

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(26, 86, 219, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 16px;
}

.stat-card.success .stat-icon { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.stat-card.warning .stat-icon { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-card.error .stat-icon { background: rgba(239, 68, 68, 0.1); color: var(--error); }

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
  font-weight: 500;
}

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

.data-table th {
  background: var(--bg);
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text);
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg); }

/* BADGES */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: #ECFDF5; color: var(--success); }
.badge-warning { background: #FEF3C7; color: #D97706; }
.badge-error { background: #FEF2F2; color: var(--error); }
.badge-primary { background: #EFF6FF; color: var(--primary); }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  font-family: inherit;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(26, 86, 219, 0.35);
  color: white;
}

.btn-outline {
  background: white;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-danger { background: var(--error); color: white; }

/* FORMS */
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: #F8FAFC;
  color: var(--text);
  transition: border-color 0.15s;
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
  background: white;
}

textarea.form-control { resize: vertical; min-height: 120px; }

/* FILTERS */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 20px;
}

.filter-btn {
  padding: 7px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: white;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--muted);
}

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

/* STARS */
.stars {
  display: flex;
  gap: 2px;
}

.star { color: #FCD34D; font-size: 14px; }
.star.empty { color: #E2E8F0; }

/* AVATAR */
.reviewer-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--sky-accent);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}

/* AI SUGGESTION BOX */
.ai-box {
  background: linear-gradient(135deg, #F0F9FF, #EFF6FF);
  border: 1px solid var(--sky-accent);
  border-radius: var(--radius);
  padding: 16px;
  position: relative;
}

.ai-box-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ai-box-text {
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main-content { margin-left: 0; }
  .topbar { padding: 0 16px; }
  .page-content { padding: 16px; }
}

/* LOGIN PAGE */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: 24px;
  padding: 48px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

/* SEARCH */
.search-input {
  position: relative;
  flex: 1;
  max-width: 300px;
}

.search-input i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 16px;
}

.search-input input {
  padding-left: 38px;
  width: 100%;
}

/* REVIEW DETAIL */
.review-full-text {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
  border: 1px solid var(--border);
}

.reply-section {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: 20px;
}

.reply-preview {
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: var(--radius);
  padding: 14px;
  font-size: 14px;
  color: #166534;
  line-height: 1.6;
}

/* EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state i {
  font-size: 48px;
  color: var(--muted);
  margin-bottom: 16px;
  display: block;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 18px;
  color: var(--text);
  margin: 0 0 8px;
}

.empty-state p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

/* PULSE DOT */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }