:root {
  color-scheme: light dark;
  --bg: #f7f9fb;
  --bg-gradient-top: #fff3d4;
  --card: #ffffff;
  --fg: #16324f;
  --fg-muted: #5f7793;
  --primary: #ff7a59;
  --primary-foreground: #ffffff;
  --primary-hover: #f26642;
  --primary-soft: #ffe4da;
  --accent: #2ec4b6;
  --accent-soft: #d6f4f0;
  --border: #e2e8f0;
  --ring: rgba(255, 122, 89, 0.4);
  --shadow-card: 0 1px 2px rgba(22, 50, 79, 0.05), 0 4px 14px rgba(22, 50, 79, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1a2d;
    --bg-gradient-top: rgba(255, 211, 112, 0.16);
    --card: #16324f;
    --fg: #eaf1fa;
    --fg-muted: #9bb1cc;
    --primary: #ff8e70;
    --primary-foreground: #0b1a2d;
    --primary-hover: #ffa088;
    --primary-soft: rgba(255, 142, 112, 0.18);
    --accent: #3fdbcc;
    --accent-soft: rgba(63, 219, 204, 0.16);
    --border: #234a6e;
    --ring: rgba(255, 142, 112, 0.6);
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 14px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

/* The hidden attribute must win over the display rules on .signup / .success. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-feature-settings: "tnum" 1, "ss01" 1;
  background: linear-gradient(180deg, var(--bg-gradient-top) 0%, var(--bg) 180px);
  color: var(--fg);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.card {
  width: min(100%, 44rem);
  padding: 2rem;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.brand {
  width: min(100%, 30rem);
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

.brand-symbol {
  width: clamp(4rem, 8vw, 5rem);
  height: auto;
  flex: 0 0 auto;
}

.brand-wordmark {
  margin: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  font-family: Manrope, Inter, sans-serif;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--fg);
}

.brand-dot {
  color: var(--primary);
  font-size: 0.8em;
  transform: translateY(-0.01em);
}

.eyebrow {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-hover);
}

h1 {
  margin: 0.75rem 0;
  font-family: Manrope, Inter, sans-serif;
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.copy {
  margin: 0;
  color: var(--fg-muted);
  line-height: 1.7;
}

.signup {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.signup input {
  flex: 1 1 14rem;
  min-width: 0;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  padding: 0.85rem 0.95rem;
  font-size: 1rem;
}

.signup button {
  border: none;
  border-radius: 12px;
  background: var(--primary);
  color: var(--primary-foreground);
  padding: 0.85rem 1rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

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

.signup input:focus-visible,
.signup button:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 1px;
}

.note {
  margin: 0.9rem 0 0;
  color: var(--fg);
  background: var(--primary-soft);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  font-size: 0.92rem;
}

.success {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  padding: 1rem 1.1rem;
  line-height: 1.5;
}

.success strong {
  color: var(--fg);
}

.success span {
  color: var(--fg-muted);
}

.success:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 640px) {
  .brand {
    gap: 0.65rem;
  }

  .brand-wordmark {
    gap: 0.28rem;
  }
}