/* ===========================================================================
   Bravonix Agent — Styles
   Tema claro (padrão) + tema escuro
   Baseado no DESIGN_BRAVONIX.md
   =========================================================================== */

/* ── Fonts ─────────────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── CSS Custom Properties (Light — default) ──────────────────────────────── */

:root {
  --bnx-font-sans: 'Sora', system-ui, -apple-system, sans-serif;
  --bnx-font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Backgrounds */
  --bnx-bg-primary: #FFFFFF;
  --bnx-bg-secondary: #F8F7F5;
  --bnx-bg-tertiary: #EDEAE2;
  --bnx-bg-card: #FFFFFF;
  --bnx-bg-input: #FFFFFF;
  --bnx-bg-hover: rgba(112, 48, 160, 0.06);
  --bnx-bg-user-msg: #7030A0;
  --bnx-bg-agent-msg: #F0EDF4;

  /* Text */
  --bnx-text-primary: #0A0A0A;
  --bnx-text-secondary: rgba(10, 10, 10, 0.68);
  --bnx-text-tertiary: rgba(10, 10, 10, 0.45);
  --bnx-text-on-purple: #FFFFFF;
  --bnx-text-link: #5B2EE0;

  /* Purple (Bravonix) */
  --bnx-purple: #7030A0;
  --bnx-purple-2: #5B2EE0;
  --bnx-purple-bright: #8B5CF6;
  --bnx-purple-deep: #2A0E4A;
  --bnx-purple-light: #E8DDF4;

  /* Lines & borders */
  --bnx-rule: rgba(10, 10, 10, 0.12);
  --bnx-border: rgba(10, 10, 10, 0.10);
  --bnx-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --bnx-shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);

  /* Semantic */
  --bnx-success: #22C55E;
  --bnx-warning: #F59E0B;
  --bnx-danger: #EF4444;
  --bnx-info: #3B82F6;

  /* Radii */
  --bnx-radius-sm: 8px;
  --bnx-radius-md: 12px;
  --bnx-radius-lg: 16px;
  --bnx-radius-xl: 24px;
  --bnx-radius-pill: 999px;

  /* Sizing */
  --bnx-header-h: 60px;
  --bnx-input-h: 56px;
  --bnx-max-w: 900px;
  --bnx-gap: 12px;
  --bnx-gap-lg: 20px;
}

/* ── Dark Theme ──────────────────────────────────────────────────────────── */

[data-theme="dark"] {
  --bnx-bg-primary: #0A0A0A;
  --bnx-bg-secondary: #121212;
  --bnx-bg-tertiary: #1A1A1A;
  --bnx-bg-card: #1A1A1A;
  --bnx-bg-input: #1A1A1A;
  --bnx-bg-hover: rgba(139, 92, 246, 0.10);
  --bnx-bg-user-msg: #8B5CF6;
  --bnx-bg-agent-msg: #1E1030;

  --bnx-text-primary: #FFFFFF;
  --bnx-text-secondary: rgba(255, 255, 255, 0.72);
  --bnx-text-tertiary: rgba(255, 255, 255, 0.45);
  --bnx-text-on-purple: #FFFFFF;
  --bnx-text-link: #A78BFA;

  --bnx-purple: #8B5CF6;
  --bnx-purple-2: #A78BFA;
  --bnx-purple-bright: #C4B5FD;
  --bnx-purple-deep: #2A0E4A;
  --bnx-purple-light: #2A0E4A;

  --bnx-rule: rgba(255, 255, 255, 0.14);
  --bnx-border: rgba(255, 255, 255, 0.10);
  --bnx-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --bnx-shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* ── Reset ────────────────────────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
}

body {
  height: 100%;
  font-family: var(--bnx-font-sans);
  background: var(--bnx-bg-primary);
  color: var(--bnx-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ── Selection ──────────────────────────────────────────────────────────── */

::selection {
  background: rgba(112, 48, 160, 0.2);
  color: var(--bnx-text-primary);
}

/* ── Focus Ring ─────────────────────────────────────────────────────────── */

*:focus-visible {
  outline: 2px solid var(--bnx-purple-bright);
  outline-offset: 2px;
}

/* ── Layout ───────────────────────────────────────────────────────────────── */

.bnx-app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Header ───────────────────────────────────────────────────────────────── */

.bnx-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--bnx-header-h);
  padding: 0 24px;
  border-bottom: 1px solid var(--bnx-rule);
  background: var(--bnx-bg-primary);
  flex-shrink: 0;
  z-index: 10;
}

.bnx-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bnx-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--bnx-text-primary);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.bnx-logo-img {
  height: 32px;
  width: auto;
  object-fit: contain;
}

.bnx-wordmark {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.bnx-logo-mark {
  width: 32px;
  height: 32px;
  background: var(--bnx-purple);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
}

.bnx-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Theme Toggle ─────────────────────────────────────────────────────────── */

.bnx-theme-btn {
  appearance: none;
  border: 1px solid var(--bnx-border);
  background: var(--bnx-bg-secondary);
  color: var(--bnx-text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all 0.2s;
}

.bnx-theme-btn:hover {
  background: var(--bnx-bg-hover);
  color: var(--bnx-purple);
  border-color: var(--bnx-purple);
}

/* ── Chat Messages Container ──────────────────────────────────────────────── */

.bnx-chat {
  flex: 1;
  overflow-y: auto;
  padding: 24px 16px;
  scroll-behavior: smooth;
}

.bnx-chat-inner {
  max-width: var(--bnx-max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--bnx-gap-lg);
}

/* ── Messages ─────────────────────────────────────────────────────────────── */

.bnx-message {
  display: flex;
  gap: 12px;
  max-width: 85%;
  animation: messageIn 0.3s ease-out;
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.bnx-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.bnx-message.agent {
  align-self: flex-start;
}

.bnx-message-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--bnx-radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

.bnx-message.user .bnx-message-avatar {
  background: var(--bnx-purple);
  color: var(--bnx-text-on-purple);
}

.bnx-message.agent .bnx-message-avatar {
  background: var(--bnx-purple-light);
  color: var(--bnx-purple);
}

.bnx-message-avatar img {
  width: 20px;
  height: 20px;
  object-fit: contain;
  display: block;
}

.bnx-message-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bnx-message-bubble {
  padding: 12px 16px;
  border-radius: var(--bnx-radius-lg);
  font-size: 14px;
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.bnx-message.user .bnx-message-bubble {
  background: var(--bnx-bg-user-msg);
  color: var(--bnx-text-on-purple);
  border-bottom-right-radius: 4px;
}

.bnx-message.agent .bnx-message-bubble {
  background: var(--bnx-bg-agent-msg);
  color: var(--bnx-text-primary);
  border-bottom-left-radius: 4px;
}

.bnx-message-time {
  font-size: 11px;
  color: var(--bnx-text-tertiary);
  padding: 0 4px;
}

.bnx-message.user .bnx-message-time {
  text-align: right;
}

/* ── Markdown within messages ─────────────────────────────────────────────── */

.bnx-message-bubble h1,
.bnx-message-bubble h2,
.bnx-message-bubble h3 {
  margin: 12px 0 6px;
  line-height: 1.3;
}

.bnx-message-bubble h2 { font-size: 16px; }
.bnx-message-bubble h3 { font-size: 14px; }

.bnx-message-bubble p {
  margin: 6px 0;
}

.bnx-message-bubble ul,
.bnx-message-bubble ol {
  margin: 6px 0;
  padding-left: 20px;
}

.bnx-message-bubble li {
  margin: 3px 0;
}

.bnx-message-bubble code {
  font-family: var(--bnx-font-mono);
  font-size: 12px;
  background: rgba(0, 0, 0, 0.06);
  padding: 2px 5px;
  border-radius: 4px;
}

[data-theme="dark"] .bnx-message-bubble code {
  background: rgba(255, 255, 255, 0.08);
}

.bnx-message-bubble pre {
  margin: 8px 0;
  padding: 12px;
  border-radius: var(--bnx-radius-sm);
  background: var(--bnx-bg-tertiary);
  overflow-x: auto;
  font-family: var(--bnx-font-mono);
  font-size: 12px;
}

.bnx-message-bubble strong {
  font-weight: 600;
}

/* ── Visual Blocks Container ──────────────────────────────────────────────── */

.bnx-visual-blocks {
  display: flex;
  flex-direction: column;
  gap: var(--bnx-gap);
  margin-top: 8px;
}

/* ── Visual Block: Card ───────────────────────────────────────────────────── */

.bnx-block-card {
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-md);
  padding: 16px;
  box-shadow: var(--bnx-shadow);
}

.bnx-block-card-header {
  margin-bottom: 8px;
}

.bnx-block-card-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--bnx-text-primary);
}

.bnx-block-card-desc {
  font-size: 12px;
  color: var(--bnx-text-secondary);
  margin-top: 2px;
}

/* ── Visual Block: Metric ─────────────────────────────────────────────────── */

.bnx-block-metric {
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-md);
  padding: 20px;
  text-align: center;
  box-shadow: var(--bnx-shadow);
  min-width: 140px;
  flex: 1;
}

.bnx-block-metric-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--bnx-purple);
  line-height: 1.2;
}

.bnx-block-metric-label {
  font-size: 12px;
  color: var(--bnx-text-secondary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bnx-block-metric-delta {
  font-size: 11px;
  margin-top: 4px;
  font-weight: 600;
}

.bnx-block-metric-delta.positive { color: var(--bnx-success); }
.bnx-block-metric-delta.negative { color: var(--bnx-danger); }
.bnx-block-metric-delta.neutral { color: var(--bnx-text-tertiary); }
.bnx-block-metric-delta.warning { color: var(--bnx-warning); }

.bnx-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--bnx-gap);
}

/* ── Visual Block: Panel ──────────────────────────────────────────────────── */

.bnx-block-panel {
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-left: 3px solid var(--bnx-purple);
  border-radius: var(--bnx-radius-md);
  padding: 16px;
  box-shadow: var(--bnx-shadow);
}

.bnx-block-panel-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--bnx-text-primary);
}

.bnx-block-panel-content {
  font-size: 13px;
  color: var(--bnx-text-secondary);
  line-height: 1.6;
}

/* ── Visual Block: Table ──────────────────────────────────────────────────── */

.bnx-block-table-wrap {
  overflow-x: auto;
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-md);
  box-shadow: var(--bnx-shadow);
}

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

.bnx-block-table th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bnx-text-secondary);
  border-bottom: 1px solid var(--bnx-rule);
  background: var(--bnx-bg-secondary);
}

.bnx-block-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--bnx-rule);
  color: var(--bnx-text-primary);
}

.bnx-block-table tr:last-child td {
  border-bottom: none;
}

.bnx-block-table-title {
  font-weight: 600;
  font-size: 14px;
  padding: 12px 12px 8px;
}

/* ── Visual Block: Chart ──────────────────────────────────────────────────── */

.bnx-block-chart {
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-md);
  padding: 16px;
  box-shadow: var(--bnx-shadow);
}

.bnx-block-chart-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 12px;
  color: var(--bnx-text-primary);
}

.bnx-chart-canvas-wrap {
  position: relative;
  height: 200px;
}

.bnx-chart-svg {
  width: 100%;
  height: 100%;
}

/* ── Visual Block: Timeline ───────────────────────────────────────────────── */

.bnx-block-timeline {
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-md);
  padding: 16px;
  box-shadow: var(--bnx-shadow);
}

.bnx-timeline-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 12px;
  color: var(--bnx-text-primary);
}

.bnx-timeline-item {
  display: flex;
  gap: 12px;
  padding-bottom: 12px;
  position: relative;
}

.bnx-timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 24px;
  bottom: 0;
  width: 2px;
  background: var(--bnx-rule);
}

.bnx-timeline-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bnx-purple-light);
  border: 2px solid var(--bnx-purple);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: var(--bnx-purple);
}

.bnx-timeline-content {
  flex: 1;
}

.bnx-timeline-content strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
}

.bnx-timeline-content span {
  font-size: 12px;
  color: var(--bnx-text-secondary);
}

/* ── Visual Block: Action List ────────────────────────────────────────────── */

.bnx-block-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.bnx-action-btn {
  appearance: none;
  border: 1px solid var(--bnx-border);
  background: var(--bnx-bg-card);
  color: var(--bnx-text-primary);
  padding: 8px 16px;
  border-radius: var(--bnx-radius-pill);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--bnx-font-sans);
}

.bnx-action-btn:hover {
  border-color: var(--bnx-purple);
  color: var(--bnx-purple);
  background: var(--bnx-bg-hover);
}

.bnx-action-btn.primary {
  background: var(--bnx-purple);
  color: var(--bnx-text-on-purple);
  border-color: var(--bnx-purple);
}

.bnx-action-btn.primary:hover {
  background: var(--bnx-purple-2);
  border-color: var(--bnx-purple-2);
}

/* ── Visual Block: Text ───────────────────────────────────────────────────── */

.bnx-block-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--bnx-text-primary);
  padding: 4px 0;
}

.bnx-block-text p {
  margin: 6px 0;
}

/* ── Empty State ──────────────────────────────────────────────────────────── */

.bnx-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex: 1;
  padding: 60px 20px;
  gap: 16px;
}

.bnx-empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--bnx-purple-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.bnx-empty h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--bnx-text-primary);
}

.bnx-empty p {
  font-size: 14px;
  color: var(--bnx-text-secondary);
  max-width: 400px;
  line-height: 1.6;
}

.bnx-empty-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
  justify-content: center;
}

.bnx-suggestion-chip {
  appearance: none;
  border: 1px solid var(--bnx-border);
  background: var(--bnx-bg-secondary);
  color: var(--bnx-text-secondary);
  padding: 6px 14px;
  border-radius: var(--bnx-radius-pill);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--bnx-font-sans);
}

.bnx-suggestion-chip:hover {
  border-color: var(--bnx-purple);
  color: var(--bnx-purple);
  background: var(--bnx-bg-hover);
}

/* ── Animations ──────────────────────────────────────────────────────────── */

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

.bnx-fade-in { animation: fade-in 0.3s ease-out; }
.bnx-slide-in { animation: slide-in 0.3s ease-out; }

.bnx-chip-text {
  font-family: var(--bnx-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Input Area ───────────────────────────────────────────────────────────── */

.bnx-input-area {
  border-top: 1px solid var(--bnx-rule);
  padding: 12px 16px;
  background: var(--bnx-bg-primary);
  flex-shrink: 0;
}

.bnx-input-inner {
  max-width: var(--bnx-max-w);
  margin: 0 auto;
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.bnx-input {
  flex: 1;
  min-height: var(--bnx-input-h);
  max-height: 140px;
  padding: 14px 16px;
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-lg);
  background: var(--bnx-bg-input);
  color: var(--bnx-text-primary);
  font-size: 14px;
  font-family: var(--bnx-font-sans);
  line-height: 1.5;
  resize: none;
  outline: none;
  transition: border-color 0.15s;
}

.bnx-input:focus {
  border-color: var(--bnx-purple);
  box-shadow: 0 0 0 3px rgba(112, 48, 160, 0.10);
}

.bnx-input::placeholder {
  color: var(--bnx-text-tertiary);
}

.bnx-send-btn {
  appearance: none;
  border: none;
  background: var(--bnx-purple);
  color: var(--bnx-text-on-purple);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.15s;
  flex-shrink: 0;
}

.bnx-send-btn:hover {
  background: var(--bnx-purple-2);
  transform: translateY(-1px);
}

.bnx-send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.bnx-input-footer {
  max-width: var(--bnx-max-w);
  margin: 6px auto 0;
  font-size: 11px;
  color: var(--bnx-text-tertiary);
  text-align: center;
}

/* ── Loading State ────────────────────────────────────────────────────────── */

.bnx-loading {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  align-items: center;
}

.bnx-loading-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bnx-purple);
  animation: bounce 1.2s infinite;
}

.bnx-loading-dot:nth-child(2) { animation-delay: 0.15s; }
.bnx-loading-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.3; }
  40% { transform: translateY(-6px); opacity: 1; }
}

/* ── Status Badge ─────────────────────────────────────────────────────────── */

.bnx-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--bnx-text-tertiary);
  font-family: var(--bnx-font-mono);
}

.bnx-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

.bnx-status-dot.online {
  background: var(--bnx-success);
}

.bnx-status-dot.offline {
  background: var(--bnx-warning);
}

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

/* ── Error Banner ─────────────────────────────────────────────────────────── */

.bnx-error-banner {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--bnx-radius-md);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--bnx-danger);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.bnx-error-banner-icon {
  font-size: 16px;
  flex-shrink: 0;
}

/* ── Welcome Screen ───────────────────────────────────────────────────────── */

.bnx-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex: 1;
  padding: 80px 20px 40px;
  gap: 12px;
}

.bnx-welcome-mark {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.bnx-welcome-mark img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
}

.bnx-welcome h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--bnx-text-primary);
}

.bnx-welcome p {
  color: var(--bnx-text-secondary);
  font-size: 14px;
  max-width: 480px;
  line-height: 1.6;
}

.bnx-welcome-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  justify-content: center;
  max-width: 500px;
}

/* ── Token Gate ──────────────────────────────────────────────────────────── */

.bnx-token-gate {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 40px 20px;
  min-height: 100vh;
}

.bnx-token-card {
  background: var(--bnx-bg-card);
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-xl);
  padding: 40px 32px 32px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: var(--bnx-shadow-lg);
}

.bnx-token-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  margin-bottom: 16px;
}

.bnx-token-card h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--bnx-text-primary);
  margin-bottom: 8px;
}

.bnx-token-card p {
  font-size: 13px;
  color: var(--bnx-text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
}

.bnx-token-input-wrap {
  display: flex;
  gap: 8px;
}

.bnx-token-input {
  flex: 1;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--bnx-border);
  border-radius: var(--bnx-radius-md);
  background: var(--bnx-bg-input);
  color: var(--bnx-text-primary);
  font-size: 14px;
  font-family: var(--bnx-font-mono);
  letter-spacing: 0.1em;
  outline: none;
  transition: border-color 0.15s;
}

.bnx-token-input:focus {
  border-color: var(--bnx-purple);
  box-shadow: 0 0 0 3px rgba(112, 48, 160, 0.10);
}

.bnx-token-input::placeholder {
  letter-spacing: normal;
  color: var(--bnx-text-tertiary);
  font-family: var(--bnx-font-sans);
}

.bnx-token-btn {
  appearance: none;
  border: none;
  background: var(--bnx-purple);
  color: var(--bnx-text-on-purple);
  height: 44px;
  padding: 0 20px;
  border-radius: var(--bnx-radius-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--bnx-font-sans);
  white-space: nowrap;
  transition: background 0.15s;
}

.bnx-token-btn:hover {
  background: var(--bnx-purple-2);
}

.bnx-token-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bnx-token-error {
  color: var(--bnx-danger);
  font-size: 12px;
  margin-top: 12px;
  min-height: 18px;
}

/* ── Scrollbar Styling ────────────────────────────────────────────────────── */

.bnx-chat::-webkit-scrollbar {
  width: 6px;
}

.bnx-chat::-webkit-scrollbar-track {
  background: transparent;
}

.bnx-chat::-webkit-scrollbar-thumb {
  background: var(--bnx-rule);
  border-radius: 3px;
}

.bnx-chat::-webkit-scrollbar-thumb:hover {
  background: var(--bnx-text-tertiary);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .bnx-header { padding: 0 12px; }
  .bnx-message { max-width: 92%; }
  .bnx-chat { padding: 16px 10px; }
  .bnx-input-area { padding: 8px 10px; }
  .bnx-metrics-grid { grid-template-columns: 1fr 1fr; }
  .bnx-welcome h1 { font-size: 22px; }
  .bnx-block-metric-value { font-size: 22px; }
}

@media (max-width: 400px) {
  .bnx-metrics-grid { grid-template-columns: 1fr; }
}