/* Zalu landing page. Colors, type and shape come from ./assets/tokens.css (copied from docs/brand by the build). */

@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 400; src: url('./assets/fonts/InstrumentSans-Regular.woff2') format('woff2'); font-display: swap; }
@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 500; src: url('./assets/fonts/InstrumentSans-Medium.woff2') format('woff2'); font-display: swap; }
@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 600; src: url('./assets/fonts/InstrumentSans-SemiBold.woff2') format('woff2'); font-display: swap; }

/* Base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg-page); color: var(--text-primary); font-family: var(--font-sans); font-size: var(--font-size-lead); line-height: var(--leading-body); font-synthesis: none; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; line-height: var(--leading-heading); }
h1 { font-size: clamp(32px, 5vw, 56px); letter-spacing: var(--tracking-h1); }
h2 { font-size: var(--font-size-h1); letter-spacing: var(--tracking-h1); margin-bottom: 24px; }
h3 { font-size: var(--font-size-h3); letter-spacing: var(--tracking-h3); }
a { color: var(--accent); }
img { display: block; }
ul, ol { list-style: none; margin: 0; padding: 0; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 24px; }
.lead { font-size: var(--font-size-h3); letter-spacing: var(--tracking-h3); color: var(--text-secondary); max-width: 560px; }
.fine { font-size: var(--font-size-label); color: var(--text-secondary); }
.tag { display: inline-block; font-size: var(--font-size-caption); font-weight: 500; color: var(--text-secondary); background: var(--bg-selected); border-radius: 6px; padding: 2px 8px; vertical-align: middle; margin-left: 6px; }
.tag.available { background: var(--color-success-bg); color: var(--color-success); margin-left: 0; }
.badge { display: inline-block; font-size: var(--font-size-caption); font-weight: 500; background: var(--color-success-bg); color: var(--color-success); border-radius: 6px; padding: 4px 8px; }

/* Buttons */
.button { display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border-radius: var(--radius-control); border: 1px solid var(--border-strong); background: var(--bg-surface); color: var(--text-primary); font-weight: 500; text-decoration: none; }
.button:hover { background: var(--bg-selected); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--text-on-accent); }
.button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.button.ghost { border-color: transparent; background: transparent; color: var(--text-secondary); }
.button.on-olive { background: var(--color-paper); border-color: var(--color-paper); color: var(--color-olive); }
.button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 2px; }
.closing .button:focus-visible { outline-color: var(--color-paper); }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 10; background: var(--bg-page); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; gap: 32px; height: 72px; }
.brand img { height: 28px; }
.topbar-links { display: flex; gap: 24px; margin-left: 8px; }
.topbar-links a { color: var(--text-secondary); text-decoration: none; font-weight: 500; font-size: var(--font-size-body); }
.topbar-links a:hover { color: var(--text-primary); }
.topbar-actions { margin-left: auto; display: flex; gap: 8px; }

/* Hero */
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; padding-top: 96px; padding-bottom: 96px; }
.hero-copy h1 { margin-bottom: 24px; }
.hero-copy .lead { margin-bottom: 32px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }

/* Demo */
.demo { display: flex; flex-direction: column; gap: 16px; }
.chat { display: flex; flex-direction: column; gap: 10px; }
.bubble { max-width: 82%; padding: 12px 16px; border-radius: var(--radius-card); font-size: var(--font-size-body); line-height: var(--leading-body); }
.bubble.customer { align-self: flex-start; background: var(--bg-selected); color: var(--text-primary); border-bottom-left-radius: 4px; }
.bubble.zalu { align-self: flex-end; background: var(--accent); color: var(--text-on-accent); border-bottom-right-radius: 4px; }
.agenda-card { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: center; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 16px 20px; }
.agenda-card .agenda-when { grid-column: 1; font-size: var(--font-size-caption); color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.agenda-card strong { grid-column: 1; font-weight: 600; }
.agenda-card .agenda-who { grid-column: 1; font-size: var(--font-size-label); color: var(--text-secondary); }
.agenda-card .badge { grid-column: 2; grid-row: 1 / span 3; }

/* The only animation on the page: the conversation appears once, then the card. */
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.demo-item { opacity: 0; animation: rise .5s ease-out forwards; }
.chat .demo-item:nth-child(1) { animation-delay: .3s; }
.chat .demo-item:nth-child(2) { animation-delay: 1.1s; }
.chat .demo-item:nth-child(3) { animation-delay: 1.9s; }
.chat .demo-item:nth-child(4) { animation-delay: 2.6s; }
.agenda-card.demo-item { animation-delay: 3.3s; }
@media (prefers-reduced-motion: reduce) {
  .demo-item { animation: none; opacity: 1; }
  html { scroll-behavior: auto; }
}

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.steps li { display: flex; flex-direction: column; gap: 12px; }
.step-number { display: inline-flex; width: 32px; height: 32px; align-items: center; justify-content: center; border-radius: 50%; background: var(--bg-selected); color: var(--text-primary); font-weight: 600; font-size: var(--font-size-label); font-variant-numeric: tabular-nums; }
.steps p { color: var(--text-secondary); }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.features li { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 24px; display: flex; flex-direction: column; gap: 8px; }
.features p { color: var(--text-secondary); font-size: var(--font-size-body); }

/* Segments */
.segments { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 40px 0 24px; }
.segment { border: 1px solid var(--border); border-radius: var(--radius-card); padding: 24px; display: flex; flex-direction: column; gap: 10px; background: var(--bg-surface); }
.segment.featured { background: var(--bg-selected); border-color: var(--border-strong); }
.segment .tag { align-self: flex-start; margin-left: 0; }
.segment p { color: var(--text-secondary); font-size: var(--font-size-body); }

/* FAQ */
.faq details { border-top: 1px solid var(--border); padding: 20px 0; max-width: 760px; }
.faq details:last-of-type { border-bottom: 1px solid var(--border); }
.faq summary { cursor: pointer; font-weight: 500; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--text-secondary); font-weight: 400; }
.faq details[open] summary::after { content: '–'; }
.faq details p { margin-top: 12px; color: var(--text-secondary); }

/* Closing */
.closing { background: var(--color-olive); color: var(--color-paper); padding: 96px 24px; }
.closing-inner { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; }
.closing-mark { height: 28px; }
.closing h2 { color: var(--color-paper); margin: 0; max-width: 640px; }
.closing .fine { color: var(--color-mist); }

/* Footer */
.footer { padding: 48px 24px; border-top: 1px solid var(--border); }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.footer-brand { display: flex; flex-direction: column; gap: 12px; }
.footer-brand img { height: 20px; }
.footer-brand p { color: var(--text-secondary); font-size: var(--font-size-body); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: var(--font-size-body); }
.footer-links a:hover { color: var(--text-primary); }

@media (max-width: 800px) {
  .topbar-links { display: none; }
  .button.ghost { display: none; }
  .hero { grid-template-columns: 1fr; gap: 48px; padding-top: 56px; padding-bottom: 56px; }
  .section { padding: 64px 24px; }
  .steps, .features, .segments { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
}