/* ============================================================
   AutoKhata — marketing site
   Original design. Emerald brand, light theme, Bengali-first.
   ============================================================ */
:root {
  --emerald: #10B981;
  --emerald-dark: #059669;
  --emerald-deep: #065F46;
  --emerald-soft: #ECFDF5;
  --navy: #143A5E;
  --ink: #1E293B;
  --muted: #64748B;
  --bg: #FFFFFF;
  --bg-alt: #F4F8F6;
  --line: #E2E8F0;
  --amber: #F59E0B;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 58, 94, 0.08);
  --shadow-lg: 0 24px 60px rgba(20, 58, 94, 0.14);
  --font: "Hind Siliguri", "Noto Sans Bengali", "SolaimanLipi", "Nirmala UI", "Vrinda", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 76px; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container { width: min(1140px, 92%); margin: 0 auto; }
.container.narrow { width: min(820px, 92%); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-weight: 700;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-align: center;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--emerald); color: #fff; box-shadow: 0 8px 20px rgba(16, 185, 129, 0.35); }
.btn-primary:hover { background: var(--emerald-dark); }
.btn-outline { border-color: var(--emerald); color: var(--emerald-deep); background: #fff; }
.btn-outline:hover { background: var(--emerald-soft); }
.btn-light { background: #fff; color: var(--emerald-deep); box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18); }
.btn-light:hover { background: #F0FDF4; }
.btn-lg { padding: 14px 34px; font-size: 1.1rem; }
.btn-sm { padding: 9px 22px; font-size: 0.95rem; }
.btn-block { display: block; width: 100%; padding: 12px 20px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(20, 58, 94, 0.10); }
.header-inner { display: flex; align-items: center; gap: 28px; padding: 12px 0; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-mark { width: 42px; height: 42px; border-radius: 10px; overflow: hidden; background: #0B0B0C; flex: none; }
.brand-mark img { width: 100%; height: 100%; object-fit: cover; object-position: center 18%; }
.brand-text { font-size: 1.45rem; font-weight: 800; color: var(--emerald-deep); letter-spacing: 0.2px; }
.main-nav { display: flex; gap: 26px; }
.main-nav a { font-weight: 600; color: var(--ink); font-size: 1rem; }
.main-nav a:hover { color: var(--emerald-dark); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 24px; height: 2.5px; background: var(--ink); border-radius: 2px; margin: 5px 0; transition: 0.2s; }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(135deg, #ECFDF5 0%, #F8FAFC 55%, #FFF7ED 100%);
  overflow: hidden;
  position: relative;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center; padding: 72px 0 88px; }
.badge {
  display: inline-block; background: #fff; color: var(--emerald-deep);
  border: 1.5px solid var(--emerald); border-radius: 999px;
  padding: 6px 18px; font-weight: 700; font-size: 0.92rem; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: 1.3; color: var(--navy); font-weight: 800; }
.hero h1 .accent { color: var(--emerald-dark); }
.hero-tagline { font-size: 1.05rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--emerald-dark); margin: .4rem 0 0; }
.lede { font-size: 1.15rem; color: var(--muted); margin: 16px 0 28px; max-width: 34rem; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.trust-line { margin-top: 20px; color: var(--emerald-deep); font-weight: 700; display: flex; align-items: center; gap: 8px; }
.check { width: 22px; height: 22px; border-radius: 50%; background: var(--emerald); position: relative; flex: none; }
.check::after { content: ""; position: absolute; left: 7px; top: 4px; width: 6px; height: 11px; border: solid #fff; border-width: 0 2.5px 2.5px 0; transform: rotate(42deg); }

/* phone mockup */
.hero-visual { position: relative; display: flex; justify-content: center; }
.phone {
  width: 250px; border-radius: 38px; background: #0F172A; padding: 12px;
  box-shadow: var(--shadow-lg); position: relative;
}
.phone-notch { width: 110px; height: 22px; background: #0F172A; border-radius: 0 0 14px 14px; margin: 0 auto 8px; position: relative; z-index: 2; }
.phone-notch::before { content: ""; position: absolute; left: 0; right: 0; top: -12px; height: 12px; background: #0F172A; }
.phone-screen { background: #F8FAFC; border-radius: 28px; padding: 16px 14px 20px; min-height: 380px; }
.mini-app-head { font-weight: 800; color: var(--emerald-deep); font-size: 1.05rem; margin-bottom: 12px; text-align: center; }
.mini-invoice { background: #fff; border-radius: 12px; padding: 12px; box-shadow: var(--shadow); font-size: 0.8rem; }
.mini-invoice-top { display: flex; justify-content: space-between; align-items: center; font-weight: 700; margin-bottom: 8px; }
.paid-badge { background: var(--emerald-soft); color: var(--emerald-deep); font-size: 0.7rem; padding: 2px 10px; border-radius: 999px; }
.mini-row { display: flex; justify-content: space-between; color: var(--muted); padding: 3px 0; }
.mini-total { display: flex; justify-content: space-between; font-weight: 800; color: var(--navy); border-top: 1px dashed var(--line); margin-top: 8px; padding-top: 8px; }
.mini-bars { margin-top: 14px; display: grid; gap: 10px; }
.mini-bar span { font-size: 0.72rem; color: var(--muted); font-weight: 600; }
.mini-bar i { display: block; height: 8px; border-radius: 99px; background: linear-gradient(90deg, var(--emerald), #34D399); margin-top: 4px; }
.chip {
  position: absolute; background: #fff; border-radius: 12px; box-shadow: var(--shadow-lg);
  padding: 10px 16px; text-align: center; animation: float 4s ease-in-out infinite;
}
.chip strong { display: block; color: var(--emerald-deep); font-size: 1.15rem; line-height: 1.2; }
.chip span { font-size: 0.75rem; color: var(--muted); }
.chip-a { top: 8%; right: 2%; }
.chip-b { bottom: 10%; left: 0; animation-delay: 2s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- stats ---------- */
.stats { background: var(--navy); color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 34px 0; text-align: center; }
.stat strong { display: block; font-size: 2rem; color: #fff; }
.stat span { color: #BFDBFE; font-size: 1rem; }

/* ---------- sections ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 40rem; margin: 0 auto 48px; }
.section-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); color: var(--navy); font-weight: 800; margin-bottom: 8px; }
.section-head p { color: var(--muted); font-size: 1.08rem; }

/* ---------- features ---------- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; box-shadow: var(--shadow); transition: transform 0.18s ease, box-shadow 0.18s ease; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.f-icon { display: inline-flex; width: 54px; height: 54px; border-radius: 14px; background: var(--emerald-soft); color: var(--emerald-dark); align-items: center; justify-content: center; margin-bottom: 16px; }
.f-icon svg { width: 28px; height: 28px; }
.feature-card h3 { font-size: 1.2rem; color: var(--navy); margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: 0.98rem; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: step; }
.step { background: #fff; border-radius: var(--radius); padding: 34px 28px; box-shadow: var(--shadow); position: relative; text-align: center; }
.step-num { display: inline-flex; width: 58px; height: 58px; border-radius: 50%; background: var(--emerald); color: #fff; font-size: 1.6rem; font-weight: 800; align-items: center; justify-content: center; margin-bottom: 16px; box-shadow: 0 8px 18px rgba(16, 185, 129, 0.4); }
.step h3 { color: var(--navy); margin-bottom: 8px; font-size: 1.2rem; }
.step p { color: var(--muted); }

/* ---------- pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-card { background: #fff; border: 1.5px solid var(--line); border-radius: 18px; padding: 36px 30px; position: relative; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.price-card.featured { border-color: var(--emerald); box-shadow: 0 20px 50px rgba(16, 185, 129, 0.22); transform: scale(1.04); }
.popular { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); background: var(--amber); color: #fff; font-weight: 700; font-size: 0.85rem; padding: 4px 20px; border-radius: 999px; white-space: nowrap; }
.price-card h3 { font-size: 1.25rem; color: var(--navy); }
.price { margin: 10px 0 20px; font-size: 2.6rem; font-weight: 800; color: var(--emerald-deep); }
.price .currency { font-size: 1.6rem; vertical-align: top; }
.price .per { font-size: 1rem; color: var(--muted); font-weight: 600; }
.price-card ul { list-style: none; margin-bottom: 28px; flex: 1; }
.price-card li { padding: 7px 0 7px 30px; position: relative; color: var(--ink); }
.price-card li::before { content: ""; position: absolute; left: 4px; top: 13px; width: 8px; height: 14px; border: solid var(--emerald); border-width: 0 3px 3px 0; transform: rotate(42deg); }
.pricing-note { text-align: center; color: var(--muted); margin-top: 30px; font-weight: 600; }

/* ---------- faq ---------- */
.faq-list { display: grid; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.faq-q { width: 100%; background: none; border: 0; font-family: var(--font); font-size: 1.08rem; font-weight: 700; color: var(--navy); padding: 20px 24px; display: flex; justify-content: space-between; align-items: center; gap: 16px; cursor: pointer; text-align: left; }
.faq-arrow { width: 12px; height: 12px; border: solid var(--emerald-dark); border-width: 0 2.5px 2.5px 0; transform: rotate(45deg); flex: none; transition: transform 0.2s ease; margin-bottom: 4px; }
.faq-item.open .faq-arrow { transform: rotate(225deg); margin-bottom: -4px; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.28s ease; }
.faq-a p { padding: 0 24px 22px; color: var(--muted); }

/* ---------- cta band ---------- */
.cta-band { background: linear-gradient(120deg, var(--emerald-deep), var(--emerald-dark)); color: #fff; text-align: center; padding: 72px 0; }
.cta-band h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); font-weight: 800; margin-bottom: 8px; }
.cta-band p { color: #D1FAE5; margin-bottom: 28px; font-size: 1.1rem; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 26px; text-align: center; box-shadow: var(--shadow); transition: transform 0.18s ease; display: block; }
a.contact-card:hover { transform: translateY(-5px); }
.c-icon { display: inline-flex; width: 58px; height: 58px; border-radius: 50%; background: var(--emerald-soft); color: var(--emerald-dark); align-items: center; justify-content: center; margin-bottom: 14px; }
.c-icon svg { width: 28px; height: 28px; }
.contact-card h3 { color: var(--navy); margin-bottom: 4px; }
.contact-card p { color: var(--muted); font-weight: 600; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy); color: #BFDBFE; }
.footer-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; padding: 48px 0 24px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; max-width: 320px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand p { width: 100%; font-size: 0.95rem; margin-top: 4px; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.15); padding: 18px 0; text-align: center; font-size: 0.9rem; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- live demo (Feature 1) ---------- */
.demo-shell { background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-lg); overflow: hidden; }
.demo-tabs { display: flex; gap: 6px; padding: 14px 16px 0; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.demo-tab { flex: 1; font-family: var(--font); font-weight: 700; font-size: 1rem; color: var(--muted); background: none; border: 0; border-bottom: 3px solid transparent; padding: 12px 8px 14px; cursor: pointer; }
.demo-tab.active { color: var(--emerald-deep); border-bottom-color: var(--emerald); }
.demo-pane { display: none; padding: 28px; }
.demo-pane.active { display: block; }
.demo-pane-h { color: var(--navy); font-size: 1.1rem; margin: 26px 0 12px; }
.demo-hint { color: var(--muted); font-size: 0.92rem; margin-bottom: 12px; }
.demo-note { text-align: center; color: var(--muted); font-weight: 600; margin-bottom: 18px; }
.demo-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.demo-stat { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; text-align: center; }
.demo-stat-label { display: block; color: var(--muted); font-size: 0.9rem; margin-bottom: 4px; }
.demo-stat strong { color: var(--emerald-deep); font-size: 1.5rem; }
.demo-chart { display: flex; align-items: flex-end; gap: 10px; height: 190px; padding: 10px 4px 0; border-bottom: 2px solid var(--line); }
.demo-bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; gap: 6px; }
.demo-bar { width: 70%; max-width: 44px; border-radius: 8px 8px 0 0; background: linear-gradient(180deg, var(--emerald), var(--emerald-dark)); min-height: 6px; }
.demo-bar-col span { font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.demo-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.demo-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; min-width: 560px; }
.demo-table th { background: var(--navy); color: #fff; text-align: left; padding: 12px 14px; font-weight: 700; white-space: nowrap; }
.demo-table td { padding: 12px 14px; border-top: 1px solid var(--line); vertical-align: top; }
.demo-table .mono { font-weight: 700; color: var(--emerald-deep); white-space: nowrap; }
.demo-table .num { font-weight: 700; white-space: nowrap; }
.demo-table .sub { display: block; color: var(--muted); font-size: 0.82rem; font-weight: 400; }
.demo-job-row { cursor: pointer; }
.demo-job-row:hover { background: var(--emerald-soft); }
.status-badge { display: inline-block; font-size: 0.82rem; font-weight: 700; padding: 3px 14px; border-radius: 999px; white-space: nowrap; }
.st-open { background: #FEF3C7; color: #92400E; }
.st-done { background: var(--emerald-soft); color: var(--emerald-deep); }
.st-ready { background: #DBEAFE; color: #1E40AF; }
.demo-detail { margin-top: 18px; background: var(--bg-alt); border: 1.5px solid var(--emerald); border-radius: var(--radius); padding: 24px; position: relative; }
.demo-detail-close { position: absolute; top: 10px; right: 14px; background: none; border: 0; font-size: 1.6rem; color: var(--muted); cursor: pointer; line-height: 1; }
.demo-detail h3 { color: var(--navy); margin-bottom: 2px; }
.demo-detail-meta { color: var(--muted); font-size: 0.92rem; margin-bottom: 14px; }
.demo-detail h4 { color: var(--emerald-deep); font-size: 1rem; margin-bottom: 8px; }
.demo-lines { list-style: none; }
.demo-lines li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px dashed var(--line); }
.demo-lines li em { font-style: normal; color: var(--muted); font-size: 0.88rem; }
.demo-detail-total { display: flex; justify-content: space-between; margin-top: 10px; padding-top: 10px; border-top: 2px solid var(--emerald); font-weight: 800; color: var(--navy); font-size: 1.1rem; }
.demo-invoice { max-width: 640px; margin: 0 auto; background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius); padding: 28px; position: relative; box-shadow: var(--shadow); }
.demo-invoice-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 2px solid var(--emerald); }
.demo-invoice-shop strong { display: block; font-size: 1.25rem; color: var(--emerald-deep); }
.demo-invoice-shop span { color: var(--muted); font-size: 0.9rem; }
.demo-invoice-no { text-align: right; }
.demo-invoice-no span { display: block; color: var(--muted); font-size: 0.85rem; }
.demo-invoice-no strong { color: var(--navy); font-size: 1.1rem; }
.demo-invoice-meta { display: flex; gap: 32px; margin-bottom: 16px; flex-wrap: wrap; }
.demo-invoice-meta span { display: block; color: var(--muted); font-size: 0.85rem; }
.demo-invoice-meta strong { color: var(--ink); }
.demo-invoice-totals { margin-top: 6px; display: grid; gap: 4px; max-width: 280px; margin-left: auto; }
.demo-invoice-totals div { display: flex; justify-content: space-between; color: var(--muted); }
.demo-invoice-totals .grand { border-top: 2px solid var(--emerald); padding-top: 8px; margin-top: 4px; color: var(--navy); font-size: 1.15rem; }
.demo-paid { position: absolute; top: 22px; right: 24px; border: 2.5px solid var(--emerald); color: var(--emerald-deep); font-weight: 800; padding: 4px 18px; border-radius: 8px; transform: rotate(8deg); opacity: 0.85; letter-spacing: 1px; }
.demo-cta { text-align: center; margin-top: 28px; font-size: 1.1rem; font-weight: 700; color: var(--navy); display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* ---------- screenshot gallery (Feature 3) ---------- */
.gal-tabs { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 22px; scrollbar-width: thin; }
.gal-tab { flex: none; font-family: var(--font); font-weight: 700; font-size: 0.98rem; color: var(--muted); background: #fff; border: 1.5px solid var(--line); border-radius: 999px; padding: 10px 24px; cursor: pointer; white-space: nowrap; transition: 0.18s; }
.gal-tab:hover { border-color: var(--emerald); color: var(--emerald-dark); }
.gal-tab.active { background: var(--emerald); border-color: var(--emerald); color: #fff; box-shadow: 0 8px 20px rgba(16, 185, 129, 0.35); }
.gal-stage { max-width: 960px; margin: 0 auto; }
.gal-frame { background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-lg); overflow: hidden; padding: 10px; }
.gal-frame img { border-radius: 10px; width: 100%; height: auto; }
.gal-caption { text-align: center; color: var(--muted); font-weight: 600; margin-top: 16px; font-size: 1.05rem; }

/* ---------- promo video (Feature 4) ---------- */
.video-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.video-copy h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); color: var(--navy); font-weight: 800; margin-bottom: 12px; }
.video-copy p { color: var(--muted); font-size: 1.1rem; margin-bottom: 26px; max-width: 28rem; }
.video-visual { display: flex; justify-content: center; }
.phone-video { padding: 10px; }
.phone-video video { width: 100%; border-radius: 22px; display: block; background: #000; aspect-ratio: 9/16; max-height: 480px; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; padding: 52px 0 64px; }
  .hero-visual { margin-top: 10px; }
}
@media (max-width: 860px) {
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0; background: #fff;
    flex-direction: column; gap: 0; padding: 0; max-height: 0; overflow: hidden;
    border-bottom: 1px solid var(--line); transition: max-height 0.28s ease;
  }
  .main-nav.open { max-height: 400px; }
  .main-nav a { padding: 14px 5%; border-top: 1px solid var(--line); }
  .menu-toggle { display: block; }
  .steps, .pricing-grid, .contact-grid { grid-template-columns: 1fr; }
  .price-card.featured { transform: none; }
  .stats-grid { grid-template-columns: 1fr; gap: 8px; padding: 26px 0; }
  .chip-a { right: 0; }
  .chip-b { left: 0; }
}
@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { flex: 1; }
  .section { padding: 60px 0; }
  .video-grid { grid-template-columns: 1fr; }
  .demo-pane { padding: 18px 14px; }
  .demo-stats { grid-template-columns: 1fr 1fr; }
  .demo-stat:last-child { grid-column: 1 / -1; }
  .demo-invoice { padding: 20px 16px; }
  .demo-paid { top: 14px; right: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .chip { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ---------- language toggle ---------- */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 36px;
  padding: 0 12px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.lang-toggle:hover {
  border-color: var(--emerald);
  color: var(--emerald-dark);
  background: var(--emerald-soft);
}
.lang-toggle:focus-visible {
  outline: 2px solid var(--emerald);
  outline-offset: 2px;
}