/* ═══════════════════════════════════════════════════════════
   UTILITY DATA COPILOT  ·  Enterprise Light Theme  v2.1
   Clean, airy, business-grade formatting
   ═══════════════════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  /* Brand */
  --brand-primary:   #1252a3;
  --brand-mid:       #1a6fd4;
  --brand-light:     #dbeafe;
  --brand-xlight:    #eff6ff;

  /* Surfaces */
  --bg-page:         #f4f6f9;
  --bg-white:        #ffffff;
  --bg-subtle:       #f8fafc;
  --bg-hover:        #eef3fb;
  --bg-active:       #dbeafe;

  /* Borders */
  --border:          #e4e8f0;
  --border-mid:      #cdd4e0;
  --border-strong:   #a0aec0;

  /* Text */
  --text-primary:    #0f172a;
  --text-secondary:  #334155;
  --text-muted:      #64748b;
  --text-faint:      #94a3b8;
  --text-white:      #ffffff;

  /* Semantic */
  --red:             #dc2626;
  --red-bg:          #fef2f2;
  --red-border:      #fecaca;
  --orange:          #d97706;
  --orange-bg:       #fffbeb;
  --orange-border:   #fde68a;
  --green:           #16a34a;
  --green-bg:        #f0fdf4;
  --green-border:    #bbf7d0;
  --blue:            #2563eb;
  --blue-bg:         #eff6ff;
  --blue-border:     #bfdbfe;
  --purple:          #7c3aed;
  --purple-bg:       #f5f3ff;
  --purple-border:   #ddd6fe;
  --gray:            #64748b;
  --gray-bg:         #f8fafc;
  --gray-border:     #e2e8f0;

  /* Domain accents */
  --d-outage:        #dc2626;
  --d-assets:        #d97706;
  --d-perf:          #2563eb;
  --d-der:           #16a34a;
  --d-cust:          #7c3aed;

  /* Layout */
  --nav-h:           60px;
  --sidebar-w:       272px;
  --footer-h:        38px;
  --content-max:     1440px;

  /* Shape */
  --radius-xs:       4px;
  --radius-sm:       6px;
  --radius:          8px;
  --radius-lg:       12px;
  --radius-xl:       16px;

  /* Motion */
  --ease:            0.16s ease;

  /* Shadows — gentle elevation for light UI */
  --shadow-xs:       0 1px 3px rgba(15,23,42,0.06);
  --shadow-sm:       0 2px 6px rgba(15,23,42,0.08), 0 0 0 1px rgba(15,23,42,0.03);
  --shadow-md:       0 4px 16px rgba(15,23,42,0.10);
  --shadow-focus:    0 0 0 3px rgba(18,82,163,0.20);
}

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

html {
  height: 100%;
}

body {
  height: 100%;
  display: flex;
  flex-direction: column;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  font-size: 13.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════════
   TOP NAVIGATION BAR
   ═══════════════════════════════════════════════════════ */
.top-nav {
  height: var(--nav-h);
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px 0 18px;
  gap: 0;
  flex-shrink: 0;
  position: relative;
  z-index: 200;
  box-shadow: 0 1px 0 var(--border), 0 2px 8px rgba(15,23,42,0.04);
}

/* Brand */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  padding-right: 22px;
  border-right: 1px solid var(--border);
  margin-right: 8px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-mid) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(18,82,163,0.30);
}

.brand-text { display: flex; flex-direction: column; gap: 2px; }
.brand-name  { font-weight: 700; font-size: 14px; color: var(--text-primary); letter-spacing: -0.2px; line-height: 1; }
.brand-tagline { font-size: 10.5px; color: var(--text-faint); font-weight: 400; line-height: 1; letter-spacing: 0.1px; }

/* Nav Tabs */
.nav-tabs {
  display: flex;
  align-items: stretch;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
  height: 100%;
  padding: 0 4px;
}
.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tab {
  height: 100%;
  padding: 0 18px;
  background: transparent;
  border: none;
  border-bottom: 2.5px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
  display: flex;
  align-items: center;
  gap: 7px;
  position: relative;
  letter-spacing: -0.1px;
}
.nav-tab i { font-size: 12px; opacity: 0.8; }
.nav-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-subtle);
}
.nav-tab.active {
  color: var(--brand-primary);
  border-bottom-color: var(--brand-primary);
  font-weight: 600;
  background: transparent;
}
.nav-tab.active i { opacity: 1; }

/* Status pill */
.nav-status {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
  margin-left: 16px;
  padding: 5px 12px;
  background: var(--green-bg);
  border: 1px solid var(--green-border);
  border-radius: 20px;
}
.status-dot {
  width: 7px; height: 7px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2.8s infinite;
}
.status-label { font-size: 11.5px; color: var(--green); font-weight: 600; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* ═══════════════════════════════════════════════════════
   APP LAYOUT
   ═══════════════════════════════════════════════════════ */
.app-layout {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.view {
  display: none;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}
.view.active { display: flex; }

/* Dataset views scroll independently */
#view-outage.active,
#view-assets.active,
#view-performance.active,
#view-der.active,
#view-customers.active {
  display: block;
  overflow-y: auto;
  background: var(--bg-page);
}

/* ═══════════════════════════════════════════════════════
   CHAT VIEW
   ═══════════════════════════════════════════════════════ */
#view-chat { flex-direction: row; }

/* ── Sidebar ── */
.chat-sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-white);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar-section {
  padding: 20px 18px;
}
.sidebar-section + .sidebar-section {
  border-top: 1px solid var(--border);
}

.sidebar-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-faint);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.sidebar-title i { font-size: 10px; }

/* Source list */
.source-list { list-style: none; display: flex; flex-direction: column; gap: 1px; }
.source-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all var(--ease);
  font-weight: 450;
  letter-spacing: -0.1px;
}
.source-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.source-item.active {
  background: var(--bg-active);
  color: var(--brand-primary);
  font-weight: 600;
}

.source-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.source-dot.all         { background: var(--brand-mid); }
.source-dot.outage      { background: var(--d-outage); }
.source-dot.assets      { background: var(--d-assets); }
.source-dot.performance { background: var(--d-perf); }
.source-dot.der         { background: var(--d-der); }
.source-dot.customers   { background: var(--d-cust); }

/* Suggestions */
.suggestion-list { list-style: none; display: flex; flex-direction: column; gap: 5px; }
.suggestion-chip {
  padding: 8px 11px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--ease);
  line-height: 1.4;
  letter-spacing: -0.1px;
}
.suggestion-chip:hover {
  background: var(--bg-hover);
  border-color: var(--brand-mid);
  color: var(--brand-primary);
}

/* Context filters */
.filter-group { margin-bottom: 12px; }
.filter-group:last-child { margin-bottom: 0; }

.filter-label {
  display: block;
  font-size: 10.5px;
  color: var(--text-muted);
  margin-bottom: 5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.filter-select {
  width: 100%;
  background: var(--bg-white);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 30px 8px 10px;
  font-size: 12.5px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--ease), box-shadow var(--ease);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%2364748b' d='M4.5 6l3.5 3.5L11.5 6'stroke='%2364748b' stroke-width='1.2' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 9px center;
  background-size: 14px;
}
.filter-select:focus {
  outline: none;
  border-color: var(--brand-mid);
  box-shadow: var(--shadow-focus);
}

/* ── Chat main area ── */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-page);
  min-width: 0;
}

/* Chat header strip */
.chat-header {
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.chat-header-info h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}
.chat-header-info p {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.4;
}

.btn-icon {
  width: 32px; height: 32px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: all var(--ease);
}
.btn-icon:hover {
  background: var(--red-bg);
  border-color: var(--red-border);
  color: var(--red);
}

/* ── Messages ── */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 32px 32px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.message {
  display: flex;
  gap: 14px;
  animation: msgIn 0.22s ease;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.message.user { flex-direction: row-reverse; }

.message-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  box-shadow: var(--shadow-xs);
  margin-top: 2px;
}
.message.assistant .message-avatar {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-mid) 100%);
  color: #fff;
}
.message.user .message-avatar {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

.message-body { flex: 1; min-width: 0; max-width: 86%; }
.message.user .message-body { display: flex; flex-direction: column; align-items: flex-end; }

.message-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.message.user .message-meta { flex-direction: row-reverse; }

.message-role { font-size: 12px; font-weight: 700; color: var(--text-primary); }
.message-time { font-size: 11px; color: var(--text-faint); }

/* Bubble */
.message-content {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  border-top-left-radius: 3px;
  padding: 16px 20px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  box-shadow: var(--shadow-xs);
}
.message.user .message-content {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: #fff;
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: 3px;
  box-shadow: 0 2px 8px rgba(18,82,163,0.25);
}
.message-content p          { margin-bottom: 9px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content strong     { color: var(--text-primary); font-weight: 700; }
.message.user .message-content strong { color: #fff; }
.message-content ul         { padding-left: 20px; margin: 8px 0; }
.message-content li         { margin-bottom: 5px; }
.message-content em         { color: var(--brand-mid); font-style: normal; font-weight: 500; }
.message.user .message-content em { color: #bfdbfe; }

/* Domain pills */
.domain-pills { display: flex; flex-wrap: wrap; gap: 7px; margin: 12px 0 8px; }
.domain-pill {
  padding: 4px 11px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
  border: 1px solid;
  letter-spacing: -0.1px;
}
.domain-pill.outage      { background: var(--red-bg);    border-color: var(--red-border);    color: var(--red);    }
.domain-pill.assets      { background: var(--orange-bg); border-color: var(--orange-border); color: var(--orange); }
.domain-pill.performance { background: var(--blue-bg);   border-color: var(--blue-border);   color: var(--blue);   }
.domain-pill.der         { background: var(--green-bg);  border-color: var(--green-border);  color: var(--green);  }
.domain-pill.customers   { background: var(--purple-bg); border-color: var(--purple-border); color: var(--purple); }

/* Source footer */
.message-sources {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.source-tag {
  padding: 3px 9px;
  border-radius: var(--radius-xs);
  font-size: 10.5px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  letter-spacing: 0.1px;
}
.source-tag.outage      { background: var(--red-bg);    color: var(--red);    border: 1px solid var(--red-border);    }
.source-tag.assets      { background: var(--orange-bg); color: var(--orange); border: 1px solid var(--orange-border); }
.source-tag.performance { background: var(--blue-bg);   color: var(--blue);   border: 1px solid var(--blue-border);   }
.source-tag.der         { background: var(--green-bg);  color: var(--green);  border: 1px solid var(--green-border);  }
.source-tag.customers   { background: var(--purple-bg); color: var(--purple); border: 1px solid var(--purple-border); }

/* Inline table inside chat bubble */
.inline-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  margin: 12px 0 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.inline-data-table th {
  background: var(--bg-subtle);
  color: var(--text-muted);
  padding: 9px 13px;
  text-align: left;
  font-weight: 600;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.inline-data-table td {
  padding: 9px 13px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}
.inline-data-table tr:last-child td { border-bottom: none; }
.inline-data-table tr:hover td { background: var(--bg-hover); }

/* Typing indicator */
.typing-indicator .message-content {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 16px 20px;
}
.typing-dot {
  width: 6px; height: 6px;
  background: var(--border-strong);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.18s; }
.typing-dot:nth-child(3) { animation-delay: 0.36s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%           { transform: translateY(-5px); opacity: 1; }
}

/* ── Chat input bar ── */
.chat-input-bar {
  padding: 16px 28px 18px;
  border-top: 1px solid var(--border);
  background: var(--bg-white);
  flex-shrink: 0;
}

.input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-white);
  border: 1.5px solid var(--border-mid);
  border-radius: var(--radius);
  padding: 4px 5px 4px 16px;
  transition: border-color var(--ease), box-shadow var(--ease);
}
.input-wrapper:focus-within {
  border-color: var(--brand-mid);
  box-shadow: var(--shadow-focus);
}

.chat-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13.5px;
  padding: 8px 0;
}
.chat-input::placeholder { color: var(--text-faint); }

.input-actions  { display: flex; align-items: center; gap: 8px; }
.char-counter   { font-size: 11px; color: var(--text-faint); }

.btn-send {
  width: 36px; height: 36px;
  background: var(--brand-primary);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: all var(--ease);
  flex-shrink: 0;
}
.btn-send:hover    { background: var(--brand-mid); box-shadow: 0 2px 8px rgba(18,82,163,0.30); }
.btn-send:disabled { opacity: 0.45; cursor: not-allowed; }

.input-hint {
  font-size: 11.5px;
  color: var(--text-faint);
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.input-hint i { font-size: 10px; }

/* ═══════════════════════════════════════════════════════
   DATASET VIEWS  (tab content panels)
   ═══════════════════════════════════════════════════════ */
.dataset-view {
  padding: 32px 36px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
}

/* Page heading row */
.dataset-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.dataset-header-left h2 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 11px;
  letter-spacing: -0.4px;
  line-height: 1.2;
}
.dataset-header-left h2 i {
  font-size: 18px;
  color: var(--brand-primary);
  opacity: 0.85;
}
.dataset-header-left p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 5px;
  font-weight: 400;
  line-height: 1.4;
}

.dataset-controls {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.table-search {
  background: var(--bg-white);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 13px 8px 34px;
  font-family: inherit;
  font-size: 13px;
  width: 240px;
  transition: border-color var(--ease), box-shadow var(--ease);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%2394a3b8' fill-rule='evenodd' d='M9.965 11.026a5 5 0 1 1 1.06-1.06l2.755 2.754a.75.75 0 1 1-1.06 1.06l-2.755-2.754ZM10.5 7a3.5 3.5 0 1 1-7 0 3.5 3.5 0 0 1 7 0Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 11px center;
  background-size: 14px;
}
.table-search:focus {
  outline: none;
  border-color: var(--brand-mid);
  box-shadow: var(--shadow-focus);
}
.table-search::placeholder { color: var(--text-faint); }

/* Select in dataset controls */
.dataset-controls .filter-select {
  height: 38px;
  padding: 0 30px 0 11px;
  font-size: 13px;
  width: auto;
}

/* ── KPI Cards ── */
.kpi-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.kpi-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  flex: 1;
  min-width: 155px;
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--ease), transform var(--ease);
  position: relative;
  overflow: hidden;
}
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--brand-primary);
  opacity: 0.18;
}
.kpi-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.kpi-label {
  font-size: 10.5px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin-bottom: 8px;
}
.kpi-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 5px;
  letter-spacing: -0.8px;
}
.kpi-sub { font-size: 11.5px; color: var(--text-faint); }

.kpi-value.red    { color: var(--red);    }
.kpi-value.orange { color: var(--orange); }
.kpi-value.green  { color: var(--green);  }
.kpi-value.blue   { color: var(--blue);   }
.kpi-value.purple { color: var(--purple); }
.kpi-value.yellow { color: #92400e;       }
.kpi-value.cyan   { color: #0e7490;       }

/* ── Data Table ── */
.table-wrapper {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table thead {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.data-table th {
  padding: 12px 18px;
  text-align: left;
  font-weight: 700;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color var(--ease);
}
.data-table th:hover { color: var(--text-secondary); }
.data-table th.sorted-asc::after  { content: ' ↑'; color: var(--brand-mid); }
.data-table th.sorted-desc::after { content: ' ↓'; color: var(--brand-mid); }

.data-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
  white-space: nowrap;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--bg-hover); }

/* ── Status Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
  letter-spacing: 0.1px;
}
.badge-red    { background: var(--red-bg);    color: var(--red);    border-color: var(--red-border);    }
.badge-orange { background: var(--orange-bg); color: var(--orange); border-color: var(--orange-border); }
.badge-yellow { background: #fffbeb;          color: #92400e;       border-color: #fde68a;              }
.badge-green  { background: var(--green-bg);  color: var(--green);  border-color: var(--green-border);  }
.badge-blue   { background: var(--blue-bg);   color: var(--blue);   border-color: var(--blue-border);   }
.badge-purple { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-border); }
.badge-gray   { background: var(--gray-bg);   color: var(--gray);   border-color: var(--gray-border);   }
.badge-cyan   { background: #ecfeff;          color: #0e7490;       border-color: #a5f3fc;              }

/* ── Score bars ── */
.score-bar {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 95px;
}
.score-track {
  flex: 1;
  height: 5px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.score-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}
.score-fill.high   { background: var(--green);  }
.score-fill.medium { background: var(--orange); }
.score-fill.low    { background: var(--red);    }
.score-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  min-width: 28px;
  text-align: right;
}

/* ── Pagination ── */
.table-pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 16px 0 4px;
  font-size: 12.5px;
  color: var(--text-muted);
}
.table-pagination > span { margin-right: 10px; }

.page-btn {
  min-width: 34px;
  height: 34px;
  padding: 0 9px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 500;
  transition: all var(--ease);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.page-btn:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--brand-mid);
  color: var(--brand-primary);
}
.page-btn.active {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: #fff;
  font-weight: 700;
}
.page-btn:disabled { opacity: 0.35; cursor: not-allowed; }

/* ═══════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════ */
.app-footer {
  height: var(--footer-h);
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  font-size: 11.5px;
  color: var(--text-faint);
  flex-shrink: 0;
  letter-spacing: 0.1px;
}

/* ═══════════════════════════════════════════════════════
   SCROLLBARS  (thin, subtle)
   ═══════════════════════════════════════════════════════ */
::-webkit-scrollbar         { width: 5px; height: 5px; }
::-webkit-scrollbar-track   { background: transparent; }
::-webkit-scrollbar-thumb   { background: var(--border-mid); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ═══════════════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════════════ */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-faint);
}
.empty-state i { font-size: 34px; margin-bottom: 16px; display: block; opacity: 0.35; }
.empty-state p { font-size: 14px; }

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
  :root { --sidebar-w: 248px; }
  .dataset-view { padding: 24px 24px 32px; }
}

@media (max-width: 1024px) {
  .dataset-view { padding: 20px 20px 28px; gap: 18px; }
  .nav-tab      { padding: 0 13px; }
}

@media (max-width: 768px) {
  body { overflow: auto; }
  #view-chat { flex-direction: column; }
  .chat-sidebar {
    width: 100%;
    height: auto;
    max-height: 220px;
    border-right: none;
    border-bottom: 1px solid var(--border);
    flex-direction: row;
    flex-wrap: wrap;
    overflow-x: auto;
  }
  .sidebar-section { padding: 14px 16px; }
  .nav-tabs { gap: 0; }
  .nav-tab  { padding: 0 11px; font-size: 11.5px; }
  .nav-tab i { display: none; }
  .brand-tagline { display: none; }
  .dataset-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .dataset-controls { width: 100%; }
  .table-search { width: 100%; }
  .kpi-card { min-width: 140px; }
  .dataset-view { padding: 16px; gap: 14px; }
  .chat-messages { padding: 20px 16px 12px; gap: 20px; }
  .chat-input-bar { padding: 12px 16px 14px; }
  .chat-header { padding: 12px 16px; }
}

/* ═══════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════ */
.fade-in { animation: fadeIn 0.25s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}