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

:root {
  --color-bg: #ffffff;
  --color-surface: #f5f5f5;
  --color-text: #1a1a1a;
  --color-muted: #777;
  --color-pink: #c94277;
  --color-pink-hover: #b33566;
  --font: 'DM Serif Text', Georgia, serif;
}

html, body {
  height: 100%;
}

body {
  font-family: var(--font);
  background-color: var(--color-bg);
  background-image: url('assets/double-bubble-outline.png');
  background-repeat: repeat;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.container {
  text-align: center;
  max-width: 960px;
  width: 100%;
}

/* Branding block */
.branding {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.branding-logo img {
  width: 360px;
  height: auto;
}

.branding-text {
  text-align: left;
}

.branding-text .sir {
  font-size: 4.5rem;
  color: var(--color-pink);
  margin-bottom: -0.6rem;
  line-height: 1;
  padding-left: 0.05em;
}

h1 {
  font-size: 7rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1;
  margin-bottom: 0.35rem;
}

h1 .name {
  color: var(--color-text);
}

h1 .ai {
  color: var(--color-pink);
}

.tagline {
  font-size: 1.75rem;
  font-style: italic;
  color: var(--color-pink);
  line-height: 1.4;
  padding-left: 0.05em;
}

/* Body copy */
.body-copy {
  max-width: 960px;
  margin: 0 auto 2.5rem;
  font-family: 'DM Sans', Helvetica, Arial, sans-serif;
  font-size: 1.2rem;
  line-height: 1.7;
  text-align: left;
  color: var(--color-text);
}

.body-copy p + p {
  margin-top: 1rem;
}

/* Beta note */
.beta-note {
  max-width: 460px;
  margin: 0 auto 1.5rem;
  font-family: 'DM Sans', Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-muted);
}

/* Signup form */
.signup-form {
  max-width: 460px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  gap: 0.5rem;
}

.form-group input {
  flex: 1;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  font-family: var(--font);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid #ddd;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input::placeholder {
  color: var(--color-muted);
}

.form-group input:focus {
  border-color: var(--color-pink);
}

.form-group button {
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-family: var(--font);
  color: #fff;
  background-color: var(--color-pink);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.2s;
}

.form-group button:hover {
  background-color: var(--color-pink-hover);
}

.form-note {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
  font-style: italic;
}

.thank-you {
  font-family: 'DM Sans', Helvetica, Arial, sans-serif;
  font-size: 1.1rem;
  color: var(--color-pink);
  margin-top: 0.5rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem 2rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

/* Responsive */
@media (max-width: 960px) {
  .branding {
    flex-direction: column;
    gap: 1.5rem;
  }

  .branding-text {
    text-align: center;
  }

  .branding-text .sir {
    padding-left: 0;
  }

  .tagline {
    padding-left: 0;
  }

  .branding-logo img {
    width: 240px;
  }

  h1 {
    font-size: 4rem;
  }

  .branding-text .sir {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .branding-logo img {
    width: 180px;
  }

  h1 {
    font-size: 3rem;
  }

  .branding-text .sir {
    font-size: 1.5rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .form-group {
    flex-direction: column;
  }

  .form-group button {
    width: 100%;
  }
}