/* ════════════════════════════════════════════════════════════════════════════
   DOCCHAT DEMO  —  Modernized palette
   Built off the original .NET brand (electric blue / teal / navy / green)
   but shifted toward an enterprise-premium indigo/cyan/magenta on deep navy.
   ════════════════════════════════════════════════════════════════════════════ */

:root {
  /* ─── Brand palette (modernized) ─── */
  --primary:        #6366F1;   /* indigo-500  ── replaces #0808EE electric blue  */
  --primary-deep:   #4338CA;   /* indigo-700  ── replaces #171777 navy           */
  --primary-soft:   #818CF8;   /* indigo-400                                  */
  --accent:         #06B6D4;   /* cyan-500    ── replaces #09C698 teal          */
  --accent-deep:   #0E7490;   /* cyan-700                                    */
  --hot:            #EC4899;   /* pink-500    ── new dazzle accent             */
  --success:        #10B981;   /* emerald-500 ── replaces #BBFF05 lime         */
  --warning:        #F59E0B;   /* amber-500                                   */
  --danger:         #EF4444;   /* red-500                                     */

  /* ─── Surfaces (deep theme) ─── */
  --bg-0:           #060818;   /* void background                            */
  --bg-1:           #0A0E27;   /* app background                            */
  --bg-2:           #0F172A;   /* slate-900  panel background                */
  --card:           rgba(255, 255, 255, 0.04);
  --card-hover:     rgba(255, 255, 255, 0.07);
  --card-border:    rgba(255, 255, 255, 0.08);
  --card-border-strong: rgba(255, 255, 255, 0.16);

  /* ─── Text ─── */
  --text:           #F1F5F9;   /* slate-100                                  */
  --text-soft:      #CBD5E1;   /* slate-300                                  */
  --muted:          #94A3B8;   /* slate-400                                  */
  --muted-dim:      #64748B;   /* slate-500                                  */

  /* ─── Glow tokens ─── */
  --glow-primary:   0 0 32px rgba(99, 102, 241, 0.45);
  --glow-accent:    0 0 28px rgba(6, 182, 212, 0.40);
  --glow-hot:       0 0 24px rgba(236, 72, 153, 0.40);
  --glow-success:   0 0 24px rgba(16, 185, 129, 0.35);

  /* ─── Glassmorphic shadows ─── */
  --shadow-card:    0 8px 32px rgba(0, 0, 0, 0.28), 0 2px 8px rgba(0, 0, 0, 0.18);
  --shadow-pop:     0 24px 64px rgba(0, 0, 0, 0.55), 0 8px 24px rgba(0, 0, 0, 0.35);

  /* ─── Gradient mesh background ─── */
  --mesh-1: radial-gradient(ellipse 800px 600px at 10% 5%, rgba(99, 102, 241, 0.18), transparent 60%);
  --mesh-2: radial-gradient(ellipse 700px 500px at 90% 0%, rgba(236, 72, 153, 0.10), transparent 60%);
  --mesh-3: radial-gradient(ellipse 900px 700px at 50% 100%, rgba(6, 182, 212, 0.14), transparent 60%);

  /* ─── Animation timings ─── */
  --t-fast: 140ms;
  --t-base: 240ms;
  --t-slow: 480ms;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-bounce: cubic-bezier(.34, 1.56, .64, 1);

  /* ─── Radii ─── */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* ─── Typography ─── */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* ════════════════════════════════════════════════════════════════════════════
   RESET
   ════════════════════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg-1);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: var(--mesh-1), var(--mesh-2), var(--mesh-3);
  background-attachment: fixed;
  background-size: cover;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  line-height: 1.5;
}

button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
a { color: var(--accent); text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--primary-soft); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(99, 102, 241, 0.28); border-radius: var(--r-pill); }
::-webkit-scrollbar-thumb:hover { background: rgba(99, 102, 241, 0.55); }

::selection { background: rgba(99, 102, 241, 0.45); color: #fff; }

/* ════════════════════════════════════════════════════════════════════════════
   LAYOUT
   ════════════════════════════════════════════════════════════════════════════ */
.app {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 28px 96px;
}

/* ─── Topbar — blends into background, no hard rectangle ─── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 20px;
  margin-bottom: 20px;
  background: transparent;
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  border-bottom: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.35), transparent 50%),
    linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  box-shadow: 0 2px 8px rgba(99,102,241,0.20);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  position: relative;
  overflow: hidden;
}

/* Blend: soft blurred glow ring that fades into background */
.brand-mark::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--hot));
  opacity: 0.12;
  z-index: -1;
  filter: blur(4px);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.02em;
}
.brand-sub {
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ─── Pills & chips ─── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  font-size: 10px;
  font-weight: 500;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-soft);
  transition: all var(--t-fast) var(--ease);
}
.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}
.pill--ok .pill-dot { background: var(--success); box-shadow: 0 0 8px var(--success); animation: pulse-dot 2s ease-in-out infinite; }
.pill--warn .pill-dot { background: var(--warning); box-shadow: 0 0 8px var(--warning); }
.pill--err .pill-dot { background: var(--danger); box-shadow: 0 0 8px var(--danger); }

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--r-md);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: all var(--t-fast) var(--ease);
  white-space: nowrap;
}
.btn--ghost {
  background: var(--card);
  border-color: var(--card-border);
  color: var(--text-soft);
}
.btn--ghost:hover {
  background: var(--card-hover);
  border-color: var(--card-border-strong);
  color: var(--text);
}
.btn--primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
}
.btn--primary:active { transform: translateY(0); }
.btn--accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
}
.btn--accent:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(6, 182, 212, 0.5); }

.btn--icon {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 8px;
  font-size: 11px;
}

/* ════════════════════════════════════════════════════════════════════════════
   SECTION NAV (sticky)
   ════════════════════════════════════════════════════════════════════════════ */
.section-nav {
  position: sticky;
  top: 67px;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 0;
  margin: 0 0 24px;
  background: transparent;
  backdrop-filter: blur(8px) saturate(110%);
  -webkit-backdrop-filter: blur(8px) saturate(110%);
  border-bottom: none;
}
.section-nav__item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  border-radius: var(--r-pill);
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  transition: all var(--t-fast) var(--ease);
  border: 1px solid transparent;
}
.section-nav__item i { font-size: 9px; }
.section-nav__item:hover {
  color: var(--text);
  background: var(--card-hover);
}
.section-nav__item.is-active {
  color: #fff;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.30), rgba(6, 182, 212, 0.20));
  border-color: rgba(99, 102, 241, 0.40);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
}
.section-nav__spacer { flex: 1; }
.section-nav__hint-extra {
  display: none;
}
.section-nav__hint {
  font-size: 9px;
}
.section-nav__hint kbd {
  font-family: var(--font-mono);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 10px;
  color: var(--text-soft);
}

/* ════════════════════════════════════════════════════════════════════════════
   HERO (compact variant)
   ════════════════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  margin: 0 0 36px;
  padding: 44px 36px;
  border-radius: var(--r-xl);
  background:
    linear-gradient(135deg, rgba(99, 102, 241, 0.10) 0%, rgba(6, 182, 212, 0.06) 50%, rgba(236, 72, 153, 0.05) 100%),
    var(--card);
  border: 1px solid var(--card-border);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.hero--compact {
  padding: 32px 32px;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px 3px 6px;
  border-radius: var(--r-pill);
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-soft);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 18px;
  background: linear-gradient(120deg, #fff 0%, var(--primary-soft) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.lead {
  font-size: 16px;
  color: var(--text-soft);
  margin: 0 0 28px;
  max-width: 560px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.hero-stat {
  position: relative;
  padding: 18px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  overflow: hidden;
}
.hero-stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10px;
  right: 10px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  opacity: 0.4;
}
.hero-stat .label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  font-weight: 600;
  margin-bottom: 8px;
}
.hero-stat .value {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.hero-stat .delta {
  margin-top: 6px;
  font-size: 11px;
  color: var(--success);
  font-weight: 600;
}
.hero-stat .delta.neg { color: var(--danger); }

/* ════════════════════════════════════════════════════════════════════════════
   GRID — main split
   ════════════════════════════════════════════════════════════════════════════ */
.grid-main {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 24px;
  margin-bottom: 36px;
}

@media (max-width: 1100px) {
  .grid-main { grid-template-columns: 1fr; }
  .hero-content { grid-template-columns: 1fr; }
}

/* ─── Card primitive ─── */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--r-xl);
  padding: 22px;
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.card--flush { padding: 0; }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px 12px;
  border-bottom: 1px solid var(--card-border);
}
.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}
.card-title i {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary-soft);
  font-size: 12px;
}
.card-actions { display: flex; gap: 6px; }

/* ════════════════════════════════════════════════════════════════════════════
   DOCUMENT LIBRARY
   ════════════════════════════════════════════════════════════════════════════ */
.dropzone {
  margin: 18px 22px;
  padding: 22px 18px;
  border-radius: var(--r-lg);
  border: 2px dashed var(--card-border-strong);
  background: rgba(99, 102, 241, 0.04);
  text-align: center;
  transition: all var(--t-base) var(--ease);
  cursor: pointer;
}
.dropzone--compact {
  margin: 14px 22px;
  padding: 18px 18px;
}
.dropzone--compact i { font-size: 22px; margin-bottom: 6px; }
.dropzone--compact .dz-title { font-size: 13px; }
.dropzone--compact .dz-hint { font-size: 11px; }
.dropzone:hover, .dropzone.is-drag {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.10);
  box-shadow: inset 0 0 32px rgba(99, 102, 241, 0.18);
}
.dropzone i {
  font-size: 28px;
  color: var(--primary-soft);
  margin-bottom: 10px;
  display: block;
}
.dropzone .dz-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}
.dropzone .dz-hint { font-size: 12px; color: var(--muted); }

.doc-list {
  list-style: none;
  margin: 0;
  padding: 0 14px 14px;
  max-height: 290px;
  overflow-y: auto;
}
.doc-item {
  display: grid;
  grid-template-columns: 36px 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border-radius: var(--r-md);
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--t-fast) var(--ease);
  cursor: pointer;
}
.doc-item:hover {
  background: var(--card-hover);
  border-color: var(--card-border);
  transform: translateX(2px);
}
.doc-item.is-selected {
  background: rgba(99, 102, 241, 0.10);
  border-color: rgba(99, 102, 241, 0.30);
}

.doc-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.doc-icon.type-pdf { background: linear-gradient(135deg, var(--hot), #BE185D); box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3); }
.doc-icon.type-docx { background: linear-gradient(135deg, var(--accent), var(--accent-deep)); box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3); }
.doc-icon.type-xlsx { background: linear-gradient(135deg, var(--success), #047857); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); }

.doc-info { min-width: 0; }
.doc-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 2px;
}
.doc-meta {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: center;
}
.doc-chunks {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--r-pill);
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent);
}

.doc-actions { display: flex; gap: 4px; }
.icon-btn {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: all var(--t-fast) var(--ease);
  background: transparent;
  border: 0;
  font-size: 12px;
}
.icon-btn:hover {
  background: var(--card-hover);
  color: var(--text);
}
.icon-btn.danger:hover { color: var(--danger); background: rgba(239, 68, 68, 0.10); }

/* ════════════════════════════════════════════════════════════════════════════
   CHAT
   ════════════════════════════════════════════════════════════════════════════ */
.chat-shell {
  display: flex;
  flex-direction: column;
  height: 420px;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.chat-messages::-webkit-scrollbar { width: 6px; }

.msg {
  display: flex;
  gap: 12px;
  max-width: 92%;
  animation: msgIn var(--t-base) var(--ease-bounce) both;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.msg.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}
.msg.user .msg-avatar {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.4);
}

.msg-bubble {
  padding: 12px 16px;
  border-radius: 14px 14px 14px 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-soft);
  position: relative;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
  max-height: none;
}
.msg.user .msg-bubble {
  border-radius: 14px 14px 4px 14px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.22), rgba(99, 102, 241, 0.10));
  border-color: rgba(99, 102, 241, 0.30);
  color: var(--text);
}
.msg.assistant .msg-bubble {
  background: rgba(6, 182, 212, 0.06);
  border-color: rgba(6, 182, 212, 0.18);
}

.msg-bubble code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(0,0,0,0.35);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}

.msg-sources {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-size: 11px;
  border-radius: var(--r-pill);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--accent);
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
}
.source-chip:hover {
  background: rgba(6, 182, 212, 0.22);
  transform: translateY(-1px);
}

.msg-meta {
  margin-top: 6px;
  display: flex;
  gap: 10px;
  font-size: 10px;
  color: var(--muted-dim);
  font-variant-numeric: tabular-nums;
}

/* ─── Message footer (status + actions) ─── */
.msg-footer {
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 14px;
}

.msg-status {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 9px;
  color: var(--muted-dim);
  cursor: default;
  user-select: none;
  transition: color 220ms ease;
}

.msg-status[data-status="read"] {
  color: var(--accent);
}

.msg-status-text {
  line-height: 1;
}

.msg-actions {
  margin-left: auto;
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 140ms ease;
}

.msg:hover .msg-actions {
  opacity: 1;
}

.msg-action-btn {
  width: 18px;
  height: 18px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--muted-dim);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 100ms ease;
}

.msg-action-btn:hover {
  background: var(--card-hover);
  color: var(--text-soft);
}

.msg-action-btn.danger:hover {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
}

.typing-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  height: 18px;
}
.typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: typing 1.4s ease-in-out infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* ─── Composer ─── */
.chat-composer {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.18);
}
.chat-input-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}
.chat-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--r-md);
  padding: 12px 14px;
  font-size: 13.5px;
  resize: none;
  min-height: 44px;
  max-height: 140px;
  font-family: var(--font-sans);
  transition: all var(--t-fast) var(--ease);
}
.chat-input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.06);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.chat-input::placeholder { color: var(--muted-dim); }

.chat-send {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  border: 0;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  font-size: 14px;
}
.chat-send:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(99, 102, 241, 0.5);
}
.chat-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--muted-dim);
  box-shadow: none;
}

.chat-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 11px;
  color: var(--muted);
}
.chat-meta-row select {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 11px;
  color: var(--text-soft);
  cursor: pointer;
}
.chat-meta-row select:focus { outline: 1px solid var(--primary); }

/* ════════════════════════════════════════════════════════════════════════════
   ANALYTICS GRID
   ════════════════════════════════════════════════════════════════════════════ */
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.section-title::before {
  content: "";
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.4);
}
.section-title-icon { display: none; }
.section-title .small {
  margin-left: auto;
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}

.grid-analytics {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

@media (max-width: 1100px) {
  .span-3, .span-4 { grid-column: span 6; }
  .span-6, .span-8 { grid-column: span 12; }
}

.chart-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  padding: 18px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-base) var(--ease);
}
.chart-card:hover {
  border-color: var(--card-border-strong);
}
.chart-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 18px;
  right: 18px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  opacity: 0.6;
}
.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.chart-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.chart-value {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary-soft);
  font-variant-numeric: tabular-nums;
}
.chart-host {
  width: 100%;
  height: 220px;
}
.chart-host.tall { height: 280px; }
.chart-host.short { height: 160px; }

/* ─── Liquid gauge ─── */
.gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.gauge-host {
  width: 200px;
  height: 200px;
}
.gauge-caption {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
}

/* ════════════════════════════════════════════════════════════════════════════
   SETTINGS MODAL
   ════════════════════════════════════════════════════════════════════════════ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(6, 8, 24, 0.65);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base) var(--ease);
}
.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}
.modal {
  width: min(560px, 100%);
  background: var(--bg-2);
  border: 1px solid var(--card-border-strong);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-pop);
  overflow: hidden;
  transform: translateY(20px) scale(0.96);
  transition: transform var(--t-base) var(--ease-bounce);
}
.modal-backdrop.is-open .modal {
  transform: translateY(0) scale(1);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--card-border);
}
.modal-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
}
.modal-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.modal-foot {
  padding: 14px 22px;
  border-top: 1px solid var(--card-border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: rgba(0, 0, 0, 0.18);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: -0.01em;
}
.form-field .hint {
  font-size: 11px;
  color: var(--muted);
}
.form-input, .form-select {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--r-md);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text);
  transition: all var(--t-fast) var(--ease);
  font-family: var(--font-mono);
}
.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.06);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.form-input::placeholder { color: var(--muted-dim); }

.provider-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 4px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--r-md);
  border: 1px solid var(--card-border);
}
.provider-toggle button {
  padding: 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  transition: all var(--t-fast) var(--ease);
}
.provider-toggle button.is-active {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

/* ════════════════════════════════════════════════════════════════════════════
   TOAST
   ════════════════════════════════════════════════════════════════════════════ */
.toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--r-md);
  background: var(--bg-2);
  border: 1px solid var(--card-border-strong);
  box-shadow: var(--shadow-pop);
  font-size: 13px;
  color: var(--text);
  min-width: 260px;
  animation: toastIn var(--t-base) var(--ease-bounce) both;
  pointer-events: auto;
}
.toast.is-out { animation: toastOut var(--t-base) var(--ease) forwards; }
@keyframes toastIn {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes toastOut {
  to { transform: translateX(20px); opacity: 0; }
}
.toast i.toast-icon { color: var(--success); }
.toast.err i.toast-icon { color: var(--danger); }
.toast.warn i.toast-icon { color: var(--warning); }

/* ════════════════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════════════════ */
.footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--card-border);
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}
.footer code {
  font-family: var(--font-mono);
  background: rgba(99, 102, 241, 0.10);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--primary-soft);
  font-size: 11px;
}

/* ════════════════════════════════════════════════════════════════════════════
   UTIL
   ════════════════════════════════════════════════════════════════════════════ */
.hidden { display: none !important; }
.fade-in { animation: fadeIn var(--t-base) var(--ease) both; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}


.msg-content {
  min-width: 0;
  overflow: visible;
  flex: 1;
}