:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #111827;
  --accent-hover: #1f2937;
}

/* =========================
   Base / Global
========================= */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  width: 100%;
}

/* =========================
   Header
========================= */

.topbar {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: 14px 20px 6px;
  max-width: 1180px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  white-space: nowrap;
}

/* =========================
   Hero
========================= */

.hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 20px;
  text-align: center;
}

.hero h1 {
  margin: 0 auto;
  max-width: 700px;
  font-size: 4.5rem;
  line-height: 1.03;
  letter-spacing: -0.05em;
}

.subcta {
  margin: 24px auto 0;
  max-width: 620px;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--muted);
}

/* =========================
   Form / Signup
========================= */

.primary-button,
.signup-form button {
  display: inline-block;
  border: none;
  background: var(--accent);
  color: white;
  text-decoration: none;
  padding: 13px 18px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
}

.primary-button:hover,
.signup-form button:hover {
  background: var(--accent-hover);
}

.signup {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

.signup-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 22px;
}

.signup-card h2 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.6rem;
}

.signup-card p {
  margin-top: 0;
  color: var(--muted);
}

.signup-form {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.signup-form input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 1rem;
  background: white;
}

.signup-form input:focus {
  outline: 2px solid #cbd5e1;
  outline-offset: 1px;
}

.signup-status {
  min-height: 1.25rem;
  margin: 10px 4px 0;
  font-size: 0.95rem;
}

.signup-status-success {
  color: #166534;
}

.signup-status-error {
  color: #b91c1c;
}

/* =========================
   Mobile
========================= */

@media (max-width: 767px) {
  .hero h1 {
    font-size: 3.15rem;
    line-height: 1.02;
    max-width: 640px;
  }

  .subcta {
    font-size: 1.08rem;
    line-height: 1.65;
    max-width: 34rem;
  }
}

/* =========================
   Tablet / Small Desktop
========================= */

@media (min-width: 768px) {
  .hero {
    padding-top: 44px;
    padding-bottom: 28px;
  }

  .hero h1 {
    font-size: 4rem;
  }

  .signup-card {
    padding: 32px;
  }
}

/* =========================
   Desktop Layout
========================= */

@media (min-width: 900px) {
  .hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 460px;
    gap: 40px;
    align-items: start;
    max-width: 1180px;
    margin: 0 auto;
    padding: 12px 20px 64px;
  }

  .topbar {
    padding-top: 18px;
    padding-bottom: 0;
  }

  .brand-logo {
    width: 54px;
    height: 54px;
  }

  .brand-name {
    font-size: 0.98rem;
  }

  .hero {
    text-align: left;
    max-width: none;
    padding: 40px 0 0;
  }

  .hero h1 {
    margin: 0;
    max-width: 620px;
    font-size: 4.2rem;
    line-height: 1.02;
  }

  .subcta {
    margin: 22px 0 0;
    max-width: 560px;
  }

  .signup {
    margin: 0;
    padding: 0;
    max-width: none;
  }
}