:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f8;
  --surface: #ffffff;
  --border: #e9ebee;
  --border-strong: #dfe2e6;
  --text: #0a0a0a;
  --muted: #585e63;
  --muted-2: #8b9097;

  /* Brand: green-led, like easy-flow.ai */
  --green: #2fbf71;
  --green-600: #25a661;
  --green-soft: #e9f9f0;
  --teal: #15b8c4;
  --teal-soft: #e3f6f8;
  --violet: #6c63ff;
  --violet-soft: #ecebff;

  /* Primary action = black (matches the site's "Get Started" button) */
  --ink: #0a0a0a;
  --ink-700: #232323;

  --ok: #1c9a57;
  --danger: #dc2626;

  --radius-card: 22px;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 10px 30px rgba(16, 24, 40, 0.05);
  --shadow-hover: 0 2px 6px rgba(16, 24, 40, 0.06), 0 20px 44px rgba(16, 24, 40, 0.09);
  --maxw: 1160px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Top nav ---------- */
.brand {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.03em;
  color: var(--text);
}
.logo svg { display: block; }
.brand-site {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.brand-site:hover { border-color: var(--text); background: var(--bg-soft); }

/* ---------- Hero ---------- */
.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 64px 28px 8px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(38px, 6.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 8px 0 20px;
  font-weight: 800;
}
.accent { color: var(--green); }
.subtitle {
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--muted);
  margin: 0 auto 24px;
  max-width: 660px;
}
.hint {
  display: inline-block;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
}

/* ---------- Cards ---------- */
.cards {
  max-width: var(--maxw);
  margin: 52px auto;
  padding: 0 28px 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 24px;
}
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 28px 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: var(--border-strong); }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-icon {
  width: 52px; height: 52px;
  border-radius: 16px;
  display: grid; place-items: center;
  font-size: 24px;
}
.card-icon.green { background: var(--green-soft); }
.card-icon.teal { background: var(--teal-soft); }
.card-icon.violet { background: var(--violet-soft); }
.card-num {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.card h2 { margin: 0 0 10px; font-size: 23px; font-weight: 700; letter-spacing: -0.02em; }
.card p { color: var(--muted); margin: 0 0 22px; font-size: 15px; }
.card .btn { margin-top: auto; }

.tag {
  align-self: flex-start;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  margin: 0 0 14px;
}
.tip { font-size: 13px !important; color: var(--muted-2) !important; margin: 14px 0 0 !important; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--ink-700); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--text); background: var(--bg-soft); }
.btn.calling { background: var(--danger); color: #fff; }
.btn:disabled { opacity: 0.55; cursor: default; }

/* ---------- Status ---------- */
.status { margin-top: 12px; font-size: 14px; min-height: 20px; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.err { color: var(--danger); }
.status.live { color: var(--green-600); font-weight: 600; }

/* ---------- Transcript ---------- */
.transcript {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 240px;
  overflow-y: auto;
}
.bubble {
  padding: 9px 13px;
  border-radius: 14px;
  font-size: 14px;
  max-width: 92%;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.bubble.user { align-self: flex-end; background: var(--green-soft); color: #0c3d24; }
.bubble.agent { align-self: flex-start; background: var(--bg-soft); color: var(--text); border: 1px solid var(--border); }
.bubble .role { font-size: 11px; color: var(--muted-2); display: block; margin-bottom: 2px; font-weight: 600; }

/* ---------- Callback form ---------- */
.callback-form { display: flex; flex-direction: column; gap: 10px; margin-top: auto; }
.callback-form input {
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 13px 14px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}
.callback-form input::placeholder { color: var(--muted-2); }
.callback-form input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}

/* ---------- Footer ---------- */
.footer {
  max-width: 720px;
  margin: 16px auto 64px;
  padding: 32px 28px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 15px;
}
.footer .muted { font-size: 13px; color: var(--muted-2); margin-top: 8px; }

@media (max-width: 600px) {
  .hero { padding-top: 40px; }
  .card { padding: 24px 22px; }
}