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

:root {
  --bg: #0d0d0d;
  --surface: #1a1a1a;
  --border: #2e2e2e;
  --text-primary: #f0ece4;
  --text-secondary: #888;
  --accent: #c9a96e;
  --accent-hover: #d4b882;
  --input-bg: #111111;
  --radius: 12px;
}

html, body {
  height: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.container {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

/* Hero */
.hero {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--text-primary);
}

.amp {
  font-style: italic;
  color: var(--accent);
}

.date {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 1.15rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* Card */
.card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.card-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

/* Form */
form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

label {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

input {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 300;
  padding: 0.65rem 0.85rem;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

input::placeholder {
  color: #444;
}

input:focus {
  border-color: var(--accent);
}

input.invalid {
  border-color: #c0392b;
}

button[type="submit"] {
  margin-top: 0.5rem;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #0d0d0d;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 0.75rem;
  transition: background 0.2s, opacity 0.2s;
  width: 100%;
}

button[type="submit"]:hover {
  background: var(--accent-hover);
}

button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error-msg {
  font-size: 0.8rem;
  color: #e74c3c;
  text-align: center;
}

/* Success */
.success-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.success-icon {
  font-size: 1.6rem;
  color: var(--accent);
}

.success-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 300;
}

.success-sub {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

[hidden] {
  display: none !important;
}

@media (max-width: 420px) {
  .row {
    grid-template-columns: 1fr;
  }
}