/* HayAICall website. Tokens: tokens.css */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
:lang(vi) body, .vi { font-family: var(--font-vi); }
.ja, :lang(ja) { font-family: var(--font-ja); }
h1, h2, h3, h4, p { margin: 0; }
a { color: inherit; }
img, svg { display: block; }
.icon { width: 20px; height: 20px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-sm { width: 16px; height: 16px; }
.mono { font-family: var(--font-mono); }
.num { font-variant-numeric: tabular-nums; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 768px) { .container { padding: 0 32px; } }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); flex: none; }
.logo img { width: 30px; height: 30px; border-radius: 8px; }
.logo span { font-weight: 800; font-size: 18px; letter-spacing: -0.02em; }
.logo b { color: var(--brand); font-weight: 800; }
.logo small { display: block; font-size: 10.5px; font-weight: 600; color: var(--muted); letter-spacing: .04em; margin-top: -2px; }
.nav-links { display: none; gap: 4px; flex: 1; }
.nav-links a { text-decoration: none; color: var(--ink-2); font-size: 14.5px; font-weight: 600; padding: 8px 12px; border-radius: 10px; }
.nav-links a:hover { background: var(--surface-2); color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--brand); }
.nav-cta { display: none; gap: 8px; align-items: center; }
@media (min-width: 960px) { .nav-links, .nav-cta { display: flex; } .menu { display: none; } }

.menu { margin-left: auto; position: relative; }
.menu summary { list-style: none; cursor: pointer; padding: 8px; border-radius: 10px; }
.menu summary::-webkit-details-marker { display: none; }
.menu[open] .menu-panel { display: grid; }
.menu-panel {
  display: none; position: fixed; inset: 64px 0 auto 0; background: var(--surface); border-bottom: 1px solid var(--line);
  padding: 12px 20px 20px; gap: 2px; box-shadow: var(--shadow-lg);
}
.menu-panel a { text-decoration: none; padding: 12px 8px; font-weight: 600; border-radius: 10px; }
.menu-panel a:hover { background: var(--surface-2); }
.menu-panel .btn { margin-top: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px;
  border-radius: 12px; border: 1px solid transparent; font: 600 15px/1 var(--font); text-decoration: none; cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .08s; white-space: nowrap;
}
.btn:active { transform: scale(.985); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn-primary { background: var(--brand); color: var(--brand-ink); box-shadow: var(--shadow-cta); }
.btn-primary:hover { background: var(--brand-strong); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { background: var(--surface-2); }
.btn-ghost { color: var(--ink-2); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-lg { min-height: 52px; padding: 0 24px; font-size: 16px; border-radius: 14px; }
.btn-dark { background: var(--ink); color: var(--bg); }

/* ---------- type ---------- */
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--brand); }
.display { font-size: clamp(36px, 6vw, 60px); line-height: 1.05; font-weight: 800; letter-spacing: -0.035em; }
.h2 { font-size: clamp(28px, 3.6vw, 40px); line-height: 1.12; font-weight: 800; letter-spacing: -0.025em; }
.h3 { font-size: 19px; line-height: 1.35; font-weight: 700; letter-spacing: -0.01em; }
.lede { font-size: clamp(17px, 1.6vw, 19px); color: var(--ink-2); line-height: 1.6; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.taglines { display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--muted); font-size: 14px; font-weight: 500; }
.taglines span + span::before { content: "·"; margin-right: 14px; color: var(--line-strong); }

/* ---------- sections ---------- */
.section { padding: 72px 0; }
.section-tight { padding: 48px 0; }
.section-head { max-width: 720px; display: grid; gap: 14px; margin-bottom: 40px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; justify-items: center; }
.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
@media (min-width: 768px) { .section { padding: 104px 0; } }

/* ---------- hero ---------- */
.hero { padding: 56px 0 72px; }
.hero .container { display: grid; gap: 48px; align-items: center; }
.hero-copy { display: grid; gap: 22px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (min-width: 1024px) {
  .hero { padding: 88px 0 104px; }
  .hero .container { grid-template-columns: 1.05fr 1fr; gap: 64px; }
}
.page-hero { padding: 64px 0 40px; }
.page-hero .container { display: grid; gap: 18px; max-width: 880px; }

/* ---------- product mock (signature visual) ---------- */
.mock { position: relative; display: grid; gap: 14px; }
.mock-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg); padding: 18px; display: grid; gap: 12px;
}
.mock-head { display: flex; align-items: center; gap: 10px; }
.mock-head .who { flex: 1; min-width: 0; }
.mock-head strong { display: block; font-size: 15px; }
.mock-head span { font-size: 13px; color: var(--muted); }
.live-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--teal); background: var(--teal-soft); padding: 4px 10px; border-radius: var(--r-pill); }
.live-pill i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .3; } }
.wave { display: flex; align-items: center; gap: 3px; height: 22px; }
.wave i { width: 3px; border-radius: 2px; background: var(--teal); animation: wave 1.1s ease-in-out infinite; }
.wave i:nth-child(1) { height: 30%; } .wave i:nth-child(2) { height: 70%; animation-delay: .1s; } .wave i:nth-child(3) { height: 100%; animation-delay: .2s; }
.wave i:nth-child(4) { height: 60%; animation-delay: .3s; } .wave i:nth-child(5) { height: 35%; animation-delay: .4s; }
@keyframes wave { 50% { transform: scaleY(.45); } }
.bubbles { display: grid; gap: 8px; }
.b { max-width: 88%; padding: 9px 13px; border-radius: 14px; font-family: var(--font-ja); font-size: 14px; line-height: 1.55; }
.b small { display: block; font-family: var(--font); font-size: 11px; font-weight: 700; color: var(--muted); margin-bottom: 2px; }
.b.them { background: var(--surface-2); border-top-left-radius: 4px; }
.b.ai { background: var(--brand-soft); justify-self: end; border-top-right-radius: 4px; }
.mock-ask { display: flex; gap: 10px; align-items: flex-start; background: var(--warn-soft); border-radius: 12px; padding: 10px 12px; font-size: 13.5px; }
.mock-ask .icon { color: var(--warn); margin-top: 1px; }
.mock-result { font-family: var(--font-mono); font-size: 12.5px; line-height: 1.7; background: #0b1120; color: #e2e8f0; border-radius: 14px; padding: 14px 16px; overflow-x: auto; }
.mock-result .k { color: #7dd3fc; } .mock-result .s { color: #86efac; } .mock-result .c { color: #64748b; }
@media (min-width: 1024px) { .mock-result { margin-left: 48px; margin-top: -32px; position: relative; } }

/* ---------- audience split ---------- */
.split { display: grid; gap: 16px; }
@media (min-width: 860px) { .split { grid-template-columns: 1fr 1fr; } }
.audience {
  border-radius: var(--r-xl); padding: 28px; border: 1px solid var(--line); background: var(--surface);
  display: grid; gap: 16px; align-content: start; box-shadow: var(--shadow-sm);
}
.audience.biz { background: linear-gradient(180deg, var(--surface), var(--brand-soft)); }
.audience .tag { justify-self: start; }
.audience ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.audience li { display: flex; gap: 10px; color: var(--ink-2); }
.audience li .icon { color: var(--teal); margin-top: 3px; }

.tag { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 700; padding: 5px 10px; border-radius: var(--r-pill); background: var(--surface-2); color: var(--ink-2); }
.tag.brand { background: var(--brand-soft); color: var(--brand); }
.tag.teal { background: var(--teal-soft); color: var(--teal); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }

/* ---------- feature grid ---------- */
.grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; display: grid; gap: 10px; align-content: start; }
.feature .ico { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); }
.feature .ico.teal { background: var(--teal-soft); color: var(--teal); }
.feature p { color: var(--ink-2); font-size: 15px; }

/* ---------- steps ---------- */
.steps { display: grid; gap: 16px; counter-reset: step; list-style: none; padding: 0; margin: 0; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { counter-increment: step; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; display: grid; gap: 8px; align-content: start; }
.steps li::before { content: counter(step, decimal-leading-zero); font: 700 13px var(--font-mono); color: var(--brand); }
.steps p { color: var(--ink-2); font-size: 15px; }

/* ---------- use cases ---------- */
.case { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; display: grid; gap: 12px; align-content: start; }
.case .flow { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--ink-2); }
.case .flow span { background: var(--surface-2); padding: 4px 9px; border-radius: 8px; }
.case .flow .ai { background: var(--brand-soft); color: var(--brand); }
.case .fields { display: flex; flex-wrap: wrap; gap: 6px; }
.case .fields code { font: 12px var(--font-mono); background: var(--teal-soft); color: var(--teal); padding: 3px 7px; border-radius: 6px; }

/* ---------- dashboard preview ---------- */
.dash { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-lg); overflow: hidden; }
.dash-top { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.dash-top i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.dash-body { display: grid; grid-template-columns: 180px 1fr; min-height: 340px; }
.dash-side { border-right: 1px solid var(--line); padding: 14px 10px; display: grid; gap: 2px; align-content: start; font-size: 13px; font-weight: 600; color: var(--ink-2); }
.dash-side span { padding: 7px 10px; border-radius: 8px; }
.dash-side span.on { background: var(--brand-soft); color: var(--brand); }
.dash-main { padding: 18px; display: grid; gap: 14px; align-content: start; }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.kpi { border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.kpi small { display: block; font-size: 11.5px; color: var(--muted); font-weight: 600; }
.kpi strong { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; }
.rows { display: grid; font-size: 13px; }
.rows div { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: 10px; padding: 9px 4px; border-top: 1px solid var(--line); align-items: center; }
.rows div:first-child { border-top: 0; color: var(--muted); font-weight: 600; font-size: 12px; }
@media (max-width: 720px) { .dash-body { grid-template-columns: 1fr; } .dash-side { display: none; } .kpis { grid-template-columns: 1fr 1fr; } }

/* ---------- pricing ---------- */
.plans { display: grid; gap: 16px; }
@media (min-width: 900px) { .plans { grid-template-columns: repeat(3, 1fr); } }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl); padding: 26px; display: grid; gap: 16px; align-content: start; }
.plan.featured { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand), var(--shadow-md); }
.plan .price { font-size: 34px; font-weight: 800; letter-spacing: -0.03em; }
.plan .price small { font-size: 15px; font-weight: 600; color: var(--muted); letter-spacing: 0; }
.plan ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; font-size: 15px; color: var(--ink-2); }
.plan li { display: flex; gap: 10px; }
.plan li .icon { color: var(--teal); margin-top: 3px; }
.placeholder-note { display: inline-flex; gap: 8px; align-items: center; font-size: 13px; color: var(--warn); background: var(--warn-soft); padding: 8px 12px; border-radius: 10px; }
.toggle { display: inline-flex; padding: 4px; background: var(--surface-2); border-radius: var(--r-pill); gap: 2px; }
.toggle a { text-decoration: none; padding: 8px 16px; border-radius: var(--r-pill); font-weight: 700; font-size: 14px; color: var(--muted); }
.toggle a.on { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-sm); }

/* ---------- misc ---------- */
.checks { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; color: var(--ink-2); }
.checks li .icon { color: var(--teal); margin-top: 3px; }
.two-col { display: grid; gap: 40px; align-items: center; }
@media (min-width: 960px) { .two-col { grid-template-columns: 1fr 1fr; gap: 64px; } }
.callout { border-radius: var(--r-xl); padding: 40px 28px; background: var(--ink); color: var(--bg); display: grid; gap: 18px; justify-items: start; }
.callout .lede { color: color-mix(in srgb, var(--bg) 78%, transparent); }
.callout .btn-primary { box-shadow: none; }
@media (min-width: 768px) { .callout { padding: 56px; } }
.policy-mock { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl); padding: 20px; display: grid; gap: 14px; box-shadow: var(--shadow-md); }
.policy-mock h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.policy-mock ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; font-size: 14.5px; }
.policy-mock li { display: flex; gap: 8px; align-items: center; }
.ok { color: var(--success); } .no { color: var(--danger); } .hm { color: var(--warn); }
.prose { max-width: 760px; display: grid; gap: 16px; color: var(--ink-2); }
.prose h2 { color: var(--ink); font-size: 22px; margin-top: 16px; }
.prose ul { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.faq details { border-top: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq p { margin-top: 10px; color: var(--ink-2); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 48px 0 32px; font-size: 14px; color: var(--muted); }
.site-footer .container { display: grid; gap: 32px; }
.foot-cols { display: grid; gap: 28px; grid-template-columns: 1fr 1fr; }
@media (min-width: 860px) { .foot-cols { grid-template-columns: 2fr repeat(3, 1fr); } }
.foot-cols h4 { color: var(--ink); font-size: 13px; margin-bottom: 10px; }
.foot-cols a { display: block; text-decoration: none; padding: 4px 0; color: var(--muted); }
.foot-cols a:hover { color: var(--ink); }
.foot-bottom { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 20px; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }