/* ======================================================
   AgentBrowser — Main Styles
   Aesthetic: Fig-Mint-inspired editorial minimalism
   Typography: Playfair Display (serif) + DM Sans (body)
   Palette: warm cream + charcoal + black accents
   ====================================================== */

/* --- Fonts (self-hosted fallback chain) --- */
@font-face {
  font-family: 'ABSerif';
  src: local('Playfair Display'), local('Georgia'), local('Times New Roman');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'ABSerif';
  src: local('Playfair Display Italic'), local('Georgia Italic'), local('Times New Roman Italic');
  font-weight: 400 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'ABSans';
  src: local('DM Sans'), local('Avenir Next'), local('Avenir'), local('Helvetica Neue'), local('Helvetica');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* --- Custom Properties --- */
:root {
  --color-bg:       #FAF7F2;
  --color-bg-warm:  #F3EDE4;
  --color-bg-card:  #FFFFFF;
  --color-ink:      #1A1A1A;
  --color-ink-soft: #5C5850;
  --color-ink-mute: #9B9689;
  --color-accent:   #1A1A1A;
  --color-border:   #E8E2D9;
  --color-highlight: #D4C5A9;

  --font-serif: 'ABSerif', 'Playfair Display', 'Georgia', 'Times New Roman', serif;
  --font-sans:  'ABSans', 'DM Sans', 'Avenir Next', 'Avenir', 'Helvetica Neue', sans-serif;
  --font-mono:  'SF Mono', 'Menlo', 'Monaco', monospace;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;
  --space-2xl: 10rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --max-width: 1200px;
  --transition: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-bg);
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Utility --- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  margin-bottom: var(--space-xs);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-ink);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85em 1.8em;
  border-radius: 60px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}
.btn-primary:hover {
  background: #333;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.15);
}
.btn-large {
  font-size: 1.1rem;
  padding: 1em 2.4em;
}

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 var(--space-md);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}
.nav.scrolled {
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.nav-logo-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2em;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-ink-soft);
}
.nav-links a { transition: color var(--transition); }
.nav-links a:hover { color: var(--color-ink); }
.nav-cta {
  background: var(--color-accent);
  color: var(--color-bg) !important;
  padding: 0.55em 1.3em;
  border-radius: 60px;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}
.nav-cta:hover {
  background: #333;
  transform: translateY(-1px);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  align-items: center;
  gap: var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  padding: calc(72px + var(--space-lg)) var(--space-md) var(--space-lg);
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  margin-bottom: var(--space-sm);
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}
.hero-title em {
  font-style: italic;
  color: var(--color-ink-soft);
}
.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--color-ink-soft);
  max-width: 440px;
  margin-bottom: var(--space-md);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.hero-version {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-mute);
  letter-spacing: 0.04em;
}
.hero-req {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--color-ink-mute);
  margin-bottom: var(--space-md);
}
.hero-req strong {
  color: var(--color-ink-soft);
  font-weight: 600;
}
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Hero screenshot */
.hero-screenshot-wrapper {
  position: relative;
  width: 100%;
  max-width: 640px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 2px 8px rgba(0,0,0,0.04),
    0 12px 40px rgba(0,0,0,0.08),
    0 40px 80px rgba(0,0,0,0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}
.hero-screenshot-wrapper:hover {
  transform: translateY(-4px) scale(1.005);
  box-shadow:
    0 2px 8px rgba(0,0,0,0.04),
    0 16px 48px rgba(0,0,0,0.1),
    0 48px 96px rgba(0,0,0,0.08);
}
.hero-screenshot {
  width: 100%;
  display: block;
}
/* --- Ticker --- */
.ticker {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
  overflow: hidden;
  white-space: nowrap;
}
.ticker-track {
  display: inline-flex;
  align-items: center;
  gap: 2em;
  animation: ticker-scroll 30s linear infinite;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-mute);
}
.ticker-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-ink-mute);
  opacity: 0.4;
  flex-shrink: 0;
}
@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* --- Features --- */
.features {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.feature-card--large {
  grid-column: span 3;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 0 var(--space-md);
  padding: var(--space-lg) var(--space-md);
}
.feature-card--large .feature-icon {
  grid-row: span 2;
  align-self: start;
}
.feature-icon {
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-sm);
  color: var(--color-ink);
}
.feature-icon svg {
  width: 100%;
  height: 100%;
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.4em;
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--color-ink-soft);
}

/* --- Showcase --- */
.showcase {
  padding: var(--space-2xl) var(--space-md);
  max-width: 1400px;
  margin: 0 auto;
}
.showcase-item {
  display: grid;
  grid-template-columns: 0.4fr 0.6fr;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-2xl);
}
.showcase-item--reverse {
  grid-template-columns: 0.6fr 0.4fr;
}
.showcase-item--reverse .showcase-text {
  order: 2;
}
.showcase-item--reverse .showcase-gallery {
  order: 1;
}
.showcase-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  display: block;
  margin-bottom: var(--space-xs);
}
.showcase-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  font-style: italic;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}
.showcase-desc {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-md);
}
.showcase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
}
.showcase-tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.4em 0.9em;
  border: 1px solid var(--color-border);
  border-radius: 60px;
  color: var(--color-ink-mute);
}

/* Showcase gallery */
.showcase-gallery {
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.showcase-gallery-scroll {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-xs);
  scrollbar-width: none;
}
.showcase-gallery-scroll::-webkit-scrollbar { display: none; }
.showcase-gallery-scroll img {
  flex-shrink: 0;
  width: 85%;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  scroll-snap-align: start;
  transition: transform var(--transition);
}
.showcase-gallery-scroll img:hover {
  transform: scale(1.01);
}

/* --- How it works --- */
.how-it-works {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.step {
  position: relative;
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.step-number {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-border);
  display: block;
  margin-bottom: var(--space-sm);
}
.step h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5em;
}
.step p {
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  line-height: 1.6;
}

/* --- Specs --- */
.specs {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-md);
}
.specs-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}
.spec-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-mute);
  margin-bottom: 0.3em;
}
.spec-value {
  display: block;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
}

/* --- CTA --- */
.cta {
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
}
.cta-content {
  max-width: 600px;
  margin: 0 auto;
}
.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}
.cta-title em {
  font-style: italic;
  color: var(--color-ink-soft);
}
.cta-subtitle {
  font-size: 1.1rem;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}
.cta-note {
  display: block;
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-mute);
  letter-spacing: 0.04em;
}
.cta-req {
  display: block;
  margin-top: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-ink-mute);
  letter-spacing: 0.04em;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-md);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-weight: 700;
  font-size: 0.9rem;
}
.footer-logo-icon {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  object-fit: contain;
}
.footer-email {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-ink-mute);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.footer-email:hover {
  color: var(--color-ink);
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--color-ink-mute);
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: calc(72px + var(--space-md));
    min-height: auto;
  }
  .hero-subtitle { margin: 0 auto var(--space-md); }
  .hero-actions { justify-content: center; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card--large { grid-column: span 1; grid-template-columns: 1fr; }
  .feature-card--large .feature-icon { grid-row: auto; }
  .showcase-item,
  .showcase-item--reverse {
    grid-template-columns: 1fr;
  }
  .showcase-item--reverse .showcase-text { order: 1; }
  .showcase-item--reverse .showcase-gallery { order: 2; }
  .steps { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links a:not(.nav-cta) { display: none; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 2.4rem; }
  .specs-grid { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
}