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

:root {
  --accent:          #5856D6;
  --accent-soft:     rgba(88, 86, 214, 0.12);
  --bg:              #FFFFFF;
  --bg-secondary:    #F2F2F7;
  --separator:       #C6C6C8;
  --label:           #000000;
  --label-secondary: rgba(60, 60, 67, 0.60);
  --label-tertiary:  rgba(60, 60, 67, 0.30);
  --success:         #34C759;
  --danger:          #FF3B30;
  --warning:         #FF9500;
  --radius-sm:       8px;
  --radius-md:       12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-secondary);
  color: var(--label);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  -webkit-font-smoothing: antialiased;
}

a.back {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 32px;
  align-self: flex-start;
  max-width: 420px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}
a.back:hover { text-decoration: underline; }

.card {
  background: var(--bg);
  border: 1px solid var(--separator);
  border-radius: 20px;
  padding: 40px;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}
.logo-wrap img { height: 32px; width: auto; }
.logo-wrap span {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--label);
}

h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 15px;
  color: var(--label-secondary);
  line-height: 1.5;
  margin-bottom: 32px;
}

.form-group { margin-bottom: 14px; text-align: left; }
.name-row { display: flex; gap: 12px; }
.name-row .form-group { flex: 1; min-width: 0; }

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--label-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  height: 44px;
  border: 1.5px solid var(--separator);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--label);
  background: var(--bg);
  transition: border-color 0.15s;
  outline: none;
}
.form-input::placeholder { color: var(--label-tertiary); }
.form-input:focus { border-color: var(--accent); }

/* Slug row */
.slug-row {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--separator);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.15s;
  background: var(--bg);
}
.slug-row:focus-within { border-color: var(--accent); }
.slug-row.state-error { border-color: var(--danger); }
.slug-row.state-ok { border-color: var(--success); }
.slug-prefix {
  padding: 0 2px 0 12px;
  font-size: 13px;
  color: var(--label-tertiary);
  white-space: nowrap;
  line-height: 42px;
  user-select: none;
}
.slug-suffix {
  padding: 0 12px 0 2px;
  font-size: 13px;
  color: var(--label-tertiary);
  white-space: nowrap;
  line-height: 42px;
  user-select: none;
}
.slug-input {
  flex: 1;
  height: 42px;
  border: none;
  padding: 0;
  font-size: 15px;
  font-family: inherit;
  color: var(--label);
  background: transparent;
  outline: none;
  min-width: 0;
}
.slug-hint {
  font-size: 12px;
  margin-top: 5px;
  min-height: 16px;
  transition: color 0.15s;
  text-align: left;
}
.slug-hint.checking { color: var(--label-tertiary); }
.slug-hint.available { color: var(--success); }
.slug-hint.taken     { color: var(--danger); }
.slug-hint.invalid   { color: var(--warning); }

.divider {
  border: none;
  border-top: 1px solid var(--separator);
  margin: 20px 0;
}

.section-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--label-tertiary);
  text-align: left;
  margin-bottom: 12px;
}

.submit-btn {
  width: 100%;
  height: 50px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 24px;
  transition: opacity 0.15s;
  font-family: inherit;
}
.submit-btn:hover:not(:disabled) { opacity: 0.88; }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.error-msg {
  background: rgba(255, 59, 48, 0.08);
  border: 1px solid rgba(255, 59, 48, 0.2);
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-size: 13px;
  padding: 10px 14px;
  margin-top: 14px;
  display: none;
  text-align: left;
  line-height: 1.4;
}

.success-card { display: none; padding: 12px 0 4px; }
.success-icon { font-size: 48px; margin-bottom: 16px; }
.success-title { font-size: 22px; font-weight: 700; letter-spacing: -0.5px; margin-bottom: 10px; }
.success-sub { font-size: 15px; color: var(--label-secondary); line-height: 1.55; }

.terms {
  font-size: 12px;
  color: var(--label-tertiary);
  margin-top: 18px;
  line-height: 1.5;
}
.terms a { color: var(--accent); text-decoration: none; }
.terms a:hover { text-decoration: underline; }

@media (max-width: 460px) {
  .card { padding: 28px 20px; }
  h1 { font-size: 22px; }
}