/* BSeen Advertisement — Design Tokens + Components
   Aesthetic: confident digital agency. Deep navy + electric cyan accent.
   Typography: Plus Jakarta Sans (body) + Fraunces (display).
*/

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 7vw, 7rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Surfaces — pure black */
  --color-bg: #000000;
  --color-surface: #0a0a0a;
  --color-surface-2: #121212;
  --color-surface-offset: #181818;
  --color-surface-offset-2: #1f1f1f;
  --color-divider: #1a1a1a;
  --color-border: #2a2a2a;

  /* Text — pure white */
  --color-text: #ffffff;
  --color-text-muted: #a8a8a8;
  --color-text-faint: #6b6b6b;
  --color-text-inverse: #000000;

  /* Primary — pure white as the accent */
  --color-primary: #ffffff;
  --color-primary-hover: #f0f0f0;
  --color-primary-active: #e5e5e5;
  --color-primary-highlight: #1a1a1a;

  /* Accent — also white, kept for token compatibility */
  --color-accent: #ffffff;
  --color-accent-2: #ffffff;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-lg: 0 20px 48px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(255,255,255,0.08);

  --content-narrow: 720px;
  --content-default: 1080px;
  --content-wide: 1280px;

  --font-body: 'Inter Tight', system-ui, -apple-system, sans-serif;
  --font-display: 'Inter Tight', system-ui, -apple-system, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

/* Light mode — inverted: pure white background, black type */
[data-theme='light'] {
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-surface-2: #f5f5f5;
  --color-surface-offset: #f0f0f0;
  --color-surface-offset-2: #e8e8e8;
  --color-divider: #ececec;
  --color-border: #d4d4d4;
  --color-text: #000000;
  --color-text-muted: #525252;
  --color-text-faint: #a3a3a3;
  --color-text-inverse: #ffffff;
  --color-primary: #000000;
  --color-primary-hover: #1a1a1a;
  --color-primary-active: #2a2a2a;
  --color-primary-highlight: #ececec;
  --color-accent: #000000;
  --color-accent-2: #000000;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 48px rgba(0,0,0,0.12);
  --shadow-glow: 0 12px 40px rgba(0,0,0,0.15);
}

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-10));
}

section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}
.site-header.scrolled {
  border-bottom-color: var(--color-divider);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--space-4);
  gap: var(--space-6);
}
.brand {
  display: inline-flex; align-items: center; gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.02em;
}
.brand-mark { width: 36px; height: 36px; }
.brand-logo {
  display: block;
  height: 44px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 12px rgba(0,0,0,0.35));
  transition: transform 220ms ease, filter 220ms ease;
}
.brand:hover .brand-logo {
  transform: scale(1.04);
  filter: drop-shadow(0 4px 18px rgba(255,255,255,0.12));
}
[data-theme="light"] .brand-logo {
  filter: drop-shadow(0 2px 10px rgba(0,0,0,0.18));
}
.brand-name { font-family: var(--font-body); }
.brand-name em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: -0.01em;
}

.nav { display: none; }
@media (min-width: 880px) {
  .nav {
    display: flex; align-items: center; gap: var(--space-8);
  }
}
.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
}
.nav a:hover { color: var(--color-text); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }

.icon-button {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.icon-button:hover { background: var(--color-surface-offset); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.005em;
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #0a0a0a;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-text-muted);
}
.btn-lg { padding: 0.95rem 1.75rem; font-size: var(--text-base); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: '';
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(255,255,255,0.08), transparent 70%);
}
.hero::after {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 75%);
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--color-primary) 25%, transparent);
}

.hero h1 {
  margin-top: var(--space-6);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-hero);
  line-height: 0.92;
  letter-spacing: -0.045em;
  max-width: 18ch;
}
.hero h1 .accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.hero-lede {
  margin-top: var(--space-6);
  max-width: 56ch;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: 400;
}
.hero-cta {
  margin-top: var(--space-10);
  display: flex; flex-wrap: wrap; gap: var(--space-3);
}
.hero-marquee {
  margin-top: var(--space-16);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-6);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}
.metric { display: flex; flex-direction: column; gap: var(--space-1); }
.metric-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-text);
}
.metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---------- Section heads ---------- */
.section-head {
  display: flex; flex-direction: column; gap: var(--space-4);
  margin-bottom: var(--space-12);
  max-width: 60ch;
}
.section-tag {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-2xl);
  letter-spacing: -0.035em;
  line-height: 1.0;
}
.section-title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.section-lede {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
}

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex; flex-direction: column; gap: var(--space-4);
  position: relative; overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-text);
}
.service-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-lg);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.service-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.service-features {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  display: flex; flex-direction: column; gap: var(--space-2);
  list-style: none;
}
.service-features li {
  font-size: var(--text-sm);
  color: var(--color-text);
  display: flex; align-items: flex-start; gap: var(--space-2);
}
.service-features li svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--color-text);
}

/* ---------- Process ---------- */
.process {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-8);
  counter-reset: step;
}
.process-step {
  display: flex; flex-direction: column; gap: var(--space-3);
  counter-increment: step;
}
.process-step .num {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--color-text);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.process-step h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.process-step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  align-items: stretch;
}
.price-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex; flex-direction: column; gap: var(--space-5);
}
.price-card.featured {
  background: var(--color-surface-2);
  border-color: var(--color-text);
  box-shadow: var(--shadow-glow);
}
.price-card .badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #0a0a0a;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}
.price-name {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.price-amount {
  display: flex; align-items: baseline; gap: var(--space-2);
}
.price-amount .num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--color-text);
}
.price-amount .term {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.price-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.price-features {
  list-style: none;
  display: flex; flex-direction: column; gap: var(--space-3);
  flex-grow: 1;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.price-features li {
  font-size: var(--text-sm);
  color: var(--color-text);
  display: flex; align-items: flex-start; gap: var(--space-2);
}
.price-features li svg {
  flex-shrink: 0; margin-top: 4px;
  color: var(--color-text);
}
.price-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  margin-top: var(--space-8);
}

/* ---------- Why us ---------- */
.why {
  background: var(--color-surface-offset);
}
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}
@media (min-width: 880px) {
  .why-grid { grid-template-columns: 1fr 1fr; gap: var(--space-16); }
}
.why-features {
  display: grid;
  gap: var(--space-6);
}
.why-feature {
  display: flex; gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.why-feature .icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  display: inline-flex; align-items: center; justify-content: center;
}
.why-feature h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.why-feature p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- CTA ---------- */
.cta {
  position: relative; isolation: isolate;
  overflow: hidden;
}
.cta-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  color: var(--color-text);
  text-align: center;
  overflow: hidden;
}
.cta-card::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 20%, rgba(255,255,255,0.08), transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 90%, rgba(255,255,255,0.05), transparent 60%);
  z-index: 0;
}
.cta-card::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  z-index: 0;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
}
.cta-card > * { position: relative; z-index: 1; }
.cta-card h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-2xl);
  letter-spacing: -0.035em;
  max-width: 22ch;
  margin-inline: auto;
}
.cta-card p {
  margin-top: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
}
.cta-buttons {
  margin-top: var(--space-8);
  display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center;
}
.cta-card .btn-primary {
  background: var(--color-primary);
  color: #0a0a0a;
}
.cta-card .btn-primary:hover { background: var(--color-primary-hover); }
.cta-card .btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.cta-card .btn-ghost:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--color-text-muted);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.contact-card:hover {
  border-color: var(--color-text);
  transform: translateY(-2px);
}
.contact-card .icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  display: inline-flex; align-items: center; justify-content: center;
}
.contact-card .label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.contact-card .value {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
}
.site-footer .container {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: var(--space-6);
}
.footer-brand {
  display: block;
  flex: 1 1 100%;
  text-align: center;
  margin-bottom: var(--space-8);
}
.footer-brand img {
  width: 200px;
  max-width: 60vw;
  height: auto;
  display: inline-block;
  opacity: 0.95;
  transition: opacity 220ms ease, transform 220ms ease;
}
.footer-brand:hover img { opacity: 1; transform: scale(1.02); }
[data-theme="light"] .footer-brand img { opacity: 0.92; }
.site-footer p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-links {
  display: flex; gap: var(--space-6); flex-wrap: wrap;
}
.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer-links a:hover { color: var(--color-text); }

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 720ms cubic-bezier(0.16,1,0.3,1), transform 720ms cubic-bezier(0.16,1,0.3,1);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Chat assistant ---------- */
.chat-launcher {
  position: fixed;
  right: clamp(var(--space-4), 3vw, var(--space-8));
  bottom: clamp(var(--space-4), 3vw, var(--space-8));
  z-index: 80;
  width: 60px; height: 60px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #0a0a0a;
  border: none;
  box-shadow: var(--shadow-glow);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-interactive);
}
.chat-launcher:hover { transform: scale(1.06); }
.chat-launcher .pulse {
  position: absolute; inset: -8px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  opacity: 0.4;
  animation: pulse 2.4s ease-out infinite;
  z-index: -1;
}
@keyframes pulse {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.6); opacity: 0; }
}

.chat-window {
  position: fixed;
  right: clamp(var(--space-4), 3vw, var(--space-8));
  bottom: calc(80px + clamp(var(--space-4), 3vw, var(--space-8)));
  z-index: 90;
  width: min(380px, calc(100vw - var(--space-8)));
  height: min(560px, calc(100vh - 140px));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column;
  overflow: hidden;
  transform: translateY(16px) scale(0.96);
  opacity: 0;
  pointer-events: none;
  transition: transform 300ms cubic-bezier(0.16,1,0.3,1), opacity 200ms;
}
.chat-window.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}
.chat-header {
  padding: var(--space-4) var(--space-5);
  background: var(--color-primary);
  color: #0a0a0a;
  display: flex; align-items: center; gap: var(--space-3);
}
.chat-avatar {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: rgba(0,0,0,0.15);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.chat-header-text { flex: 1; min-width: 0; }
.chat-header-text strong {
  font-size: var(--text-sm);
  font-weight: 700;
  display: block;
}
.chat-header-text span {
  font-size: var(--text-xs);
  opacity: 0.85;
  display: flex; align-items: center; gap: var(--space-2);
}
.chat-header-text .dot {
  width: 6px; height: 6px; border-radius: var(--radius-full);
  background: #0a0a0a;
}
.chat-close {
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
  color: #0a0a0a;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.chat-close:hover { background: rgba(0,0,0,0.12); }

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex; flex-direction: column; gap: var(--space-3);
  background: var(--color-bg);
}
.chat-msg {
  max-width: 85%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.5;
  animation: msgIn 280ms cubic-bezier(0.16,1,0.3,1) both;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.chat-msg.bot {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: var(--radius-sm);
  align-self: flex-start;
  color: var(--color-text);
}
.chat-msg.user {
  background: var(--color-primary);
  color: #0a0a0a;
  border-bottom-right-radius: var(--radius-sm);
  align-self: flex-end;
}
.chat-msg a { color: inherit; font-weight: 600; }
.chat-suggestions {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-top: var(--space-2);
}
.chat-chip {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-full);
  font-weight: 500;
}
.chat-chip:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-text);
  color: var(--color-text);
}
.chat-form {
  display: flex; gap: var(--space-2);
  padding: var(--space-3);
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.chat-form input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
}
.chat-form input:focus {
  border-color: var(--color-primary);
}
.chat-form button {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #0a0a0a;
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
}
.chat-form button:hover { background: var(--color-primary-hover); }

/* ---------- Mobile nav ---------- */
.mobile-toggle {
  display: inline-flex;
}
@media (min-width: 880px) {
  .mobile-toggle { display: none; }
}
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--color-bg);
  display: none;
  flex-direction: column;
  padding: var(--space-6);
}
.mobile-menu.open { display: flex; }
.mobile-menu-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: var(--space-10);
}
.mobile-menu a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-xl);
  letter-spacing: -0.03em;
  color: var(--color-text);
  text-decoration: none;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.mobile-menu .btn { margin-top: var(--space-6); }