:root {
  --ink: #16161A;
  --ink-soft: #4A4A52;
  --ink-faint: #87878F;
  --paper: #FAFAF8;
  --paper-raised: #FFFFFF;
  --line: #E6E4DD;
  --accent: #3730A9;
  --accent-soft: #ECEAFA;
  --accent-deep: #2A2480;
  --sage: #4D7C5F;
  --sage-soft: #E7F0E9;
  --vermilion: #C24A3B;
  --vermilion-soft: #FBEAE7;
  --radius: 10px;
  --max: 1140px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Source Sans 3', -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
}

h1, h2, h3, .display {
  font-family: 'Inter', -apple-system, sans-serif;
  letter-spacing: -0.02em;
  color: var(--ink);
}

a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ---------- Nav ---------- */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px;
  max-width: var(--max); margin: 0 auto;
}
.logo { font-family: 'Inter', sans-serif; font-weight: 800; font-size: 1.3rem; letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; }
.logo-mark { width: 26px; height: 26px; flex-shrink: 0; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--ink-soft); transition: color 0.15s; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; gap: 12px; align-items: center; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 22px; border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer; transition: all 0.15s;
  font-family: 'Inter', sans-serif;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-deep); }
.btn-ghost { color: var(--ink); border-color: var(--line); background: transparent; }
.btn-ghost:hover { border-color: var(--ink-faint); }
.btn-lg { padding: 15px 30px; font-size: 1.02rem; }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero { padding: 92px 0 70px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.eyebrow {
  font-family: 'Inter', sans-serif; font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--sage); display: inline-block; }
h1.hero-title {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  font-weight: 800; line-height: 1.08; margin-bottom: 22px;
}
h1.hero-title .accent { color: var(--accent); }
.hero-sub { font-size: 1.15rem; color: var(--ink-soft); max-width: 480px; margin-bottom: 34px; line-height: 1.65; }
.hero-ctas { display: flex; gap: 14px; margin-bottom: 28px; flex-wrap: wrap; }
.hero-note { font-size: 0.88rem; color: var(--ink-faint); }

/* Voice demo card — signature element */
.voice-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 24px 60px -24px rgba(22,22,26,0.12);
}
.voice-card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.voice-dot { width: 9px; height: 9px; border-radius: 50%; background: #E5484D; }
.voice-dot:nth-child(2) { background: #F5A623; }
.voice-dot:nth-child(3) { background: var(--sage); }
.voice-card-label { font-size: 0.82rem; color: var(--ink-faint); font-weight: 500; margin-left: 6px; }

.chat-row { display: flex; gap: 12px; margin-bottom: 18px; align-items: flex-start; }
.chat-row.user { justify-content: flex-end; }
.waveform-icon {
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.waveform-icon svg { width: 18px; height: 18px; }
.bubble { padding: 12px 16px; border-radius: 12px; max-width: 78%; font-size: 0.95rem; }
.bubble.q { background: var(--accent-soft); color: var(--ink); }
.bubble.a { background: var(--paper); border: 1px solid var(--line); }
.bubble .orig { font-weight: 600; }
.bubble .translit { font-size: 0.82rem; color: var(--ink-faint); margin-top: 2px; font-style: italic; }
.stat-line { display: flex; align-items: baseline; gap: 8px; margin-top: 8px; padding-top: 10px; border-top: 1px solid var(--line); }
.stat-num { font-family: 'Inter', sans-serif; font-weight: 800; font-size: 1.4rem; color: var(--sage); }
.stat-label { font-size: 0.82rem; color: var(--ink-faint); }
.speaker-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.76rem; color: var(--accent); font-weight: 600; margin-top: 8px;
}

/* Language tabs — CSS-only radio toggle */
.lang-tabs { position: relative; }
.lang-radio { position: absolute; opacity: 0; pointer-events: none; }
.lang-tab {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 7px 16px; border-radius: 20px; font-size: 0.88rem; font-weight: 600;
  background: var(--paper); border: 1px solid var(--line); color: var(--ink-soft);
  cursor: pointer; margin-right: 8px; margin-bottom: 18px; transition: all 0.15s;
}
#lang-hi:checked ~ label[for="lang-hi"],
#lang-ta:checked ~ label[for="lang-ta"],
#lang-bn:checked ~ label[for="lang-bn"],
#lang-te:checked ~ label[for="lang-te"] {
  background: var(--accent); color: white; border-color: var(--accent);
}
.lang-panel { display: none; }
#lang-hi:checked ~ #panel-hi,
#lang-ta:checked ~ #panel-ta,
#lang-bn:checked ~ #panel-bn,
#lang-te:checked ~ #panel-te { display: block; }

/* ---------- Logos / trust strip ---------- */
.trust-strip { padding: 36px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-raised); }
.trust-inner { display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap; }
.trust-item { font-size: 0.88rem; color: var(--ink-faint); font-weight: 500; display: flex; align-items: center; gap: 8px; }
.trust-item svg { width: 16px; height: 16px; color: var(--sage); }

/* ---------- Section shared ---------- */
section { padding: 88px 0; }
.section-head { max-width: 620px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-eyebrow { font-family: 'Inter', sans-serif; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
h2.section-title { font-size: clamp(1.9rem, 3vw, 2.5rem); font-weight: 700; line-height: 1.15; margin-bottom: 16px; }
.section-sub { font-size: 1.08rem; color: var(--ink-soft); }

/* ---------- Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.feature-card { background: var(--paper-raised); padding: 32px 28px; }
.feature-icon {
  width: 42px; height: 42px; border-radius: 10px; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; color: var(--accent); }
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 0.94rem; color: var(--ink-soft); line-height: 1.6; }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step-num {
  font-family: 'Inter', sans-serif; font-weight: 800; font-size: 0.85rem;
  color: var(--accent); background: var(--accent-soft);
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.step h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 8px; }
.step p { color: var(--ink-soft); font-size: 0.94rem; }

/* ---------- Channels ---------- */
.channels-band { background: var(--ink); color: var(--paper); border-radius: 20px; padding: 56px 48px; }
.channels-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.channels-band h2 { color: white; font-size: clamp(1.7rem, 2.6vw, 2.2rem); margin-bottom: 16px; }
.channels-band p { color: rgba(255,255,255,0.72); font-size: 1.02rem; margin-bottom: 28px; }
.channel-list { display: flex; flex-direction: column; gap: 16px; }
.channel-item { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
.channel-item:last-child { border-bottom: none; }
.channel-icon { width: 38px; height: 38px; border-radius: 9px; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.channel-icon svg { width: 19px; height: 19px; color: var(--sage); }
.channel-text strong { display: block; font-size: 0.98rem; margin-bottom: 2px; }
.channel-text span { font-size: 0.86rem; color: rgba(255,255,255,0.6); }

/* ---------- CTA ---------- */
.cta-section { text-align: center; padding: 90px 0; }
.cta-section h2 { font-size: clamp(2rem, 3.4vw, 2.7rem); margin-bottom: 16px; }
.cta-section p { color: var(--ink-soft); font-size: 1.1rem; margin-bottom: 32px; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-ctas { display: flex; gap: 14px; justify-content: center; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 56px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { color: var(--ink-faint); font-size: 0.9rem; max-width: 260px; }
.footer-col h4 { font-family: 'Inter', sans-serif; font-size: 0.85rem; font-weight: 700; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 10px; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 28px; border-top: 1px solid var(--line); font-size: 0.85rem; color: var(--ink-faint); flex-wrap: wrap; gap: 12px; }

/* ---------- Auth pages (login/register) ---------- */
.auth-wrap { min-height: calc(100vh - 73px); display: flex; align-items: center; justify-content: center; padding: 60px 28px; }
.auth-card { width: 100%; max-width: 420px; background: var(--paper-raised); border: 1px solid var(--line); border-radius: 16px; padding: 40px; box-shadow: 0 24px 60px -24px rgba(22,22,26,0.10); }
.auth-head { text-align: center; margin-bottom: 30px; }
.auth-head h1 { font-size: 1.6rem; font-weight: 800; margin-bottom: 8px; }
.auth-head p { color: var(--ink-soft); font-size: 0.95rem; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 7px; font-family: 'Inter', sans-serif; }
.field input {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 0.96rem; font-family: 'Source Sans 3', sans-serif; background: var(--paper);
  transition: border-color 0.15s;
}
.field input:focus { outline: none; border-color: var(--accent); }
.field-hint { font-size: 0.8rem; color: var(--ink-faint); margin-top: 5px; }
.auth-divider { display: flex; align-items: center; gap: 12px; margin: 22px 0; color: var(--ink-faint); font-size: 0.85rem; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.auth-foot { text-align: center; margin-top: 22px; font-size: 0.92rem; color: var(--ink-soft); }
.auth-foot a { color: var(--accent); font-weight: 600; }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin-bottom: 22px; font-size: 0.88rem; color: var(--ink-soft); }
.checkbox-row input { width: 16px; height: 16px; }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-card { background: var(--paper-raised); border: 1px solid var(--line); border-radius: 16px; padding: 36px 30px; display: flex; flex-direction: column; }
.price-card.featured { border: 2px solid var(--accent); position: relative; }
.price-badge { position: absolute; top: -13px; left: 30px; background: var(--accent); color: white; font-family: 'Inter', sans-serif; font-size: 0.72rem; font-weight: 700; padding: 5px 12px; border-radius: 20px; letter-spacing: 0.04em; }
.price-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; }
.price-card .price-desc { font-size: 0.9rem; color: var(--ink-faint); margin-bottom: 22px; }
.price-amount { font-family: 'Inter', sans-serif; font-size: 2.4rem; font-weight: 800; margin-bottom: 4px; }
.price-amount span { font-size: 1rem; font-weight: 500; color: var(--ink-faint); }
.price-period { font-size: 0.85rem; color: var(--ink-faint); margin-bottom: 26px; }
.price-features { list-style: none; margin-bottom: 28px; flex-grow: 1; }
.price-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 13px; }
.price-features svg { width: 17px; height: 17px; color: var(--sage); flex-shrink: 0; margin-top: 1px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); padding: 22px 0; }
.faq-q { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; font-size: 1.02rem; font-family: 'Inter', sans-serif; gap: 16px; }
.faq-q .icon { flex-shrink: 0; transition: transform 0.2s; color: var(--ink-faint); }
.faq-item[open] .faq-q .icon { transform: rotate(45deg); }
.faq-a { padding-top: 14px; color: var(--ink-soft); font-size: 0.96rem; line-height: 1.7; max-width: 640px; }
.page-hero { padding: 64px 0 50px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 3.4vw, 2.7rem); margin-bottom: 14px; }
.page-hero p { color: var(--ink-soft); font-size: 1.08rem; max-width: 560px; margin: 0 auto; }

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .channels-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}