/* Auth pages — login & register. Dark theme matching NovelSpark landing. */
:root {
  --bg-primary: #0F0E17;
  --bg-secondary: #1A1826;
  --bg-card: #1E1C2E;
  --bg-card-hover: #252338;
  --fg-primary: #FFFFFE;
  --fg-secondary: #A7A9BE;
  --fg-muted: #6B6D80;
  --accent: #FF8906;
  --accent-dim: rgba(255, 137, 6, 0.12);
  --accent-glow: rgba(255, 137, 6, 0.06);
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(255, 137, 6, 0.2);
  --red-soft: #FF6B6B;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.auth-wrapper::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px;
  position: relative;
  z-index: 1;
}

.auth-logo {
  display: block;
  text-align: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.auth-card h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.auth-subtitle {
  text-align: center;
  color: var(--fg-secondary);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.auth-subtitle strong {
  color: var(--accent);
}

.auth-error {
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.25);
  color: var(--red-soft);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 20px;
  text-align: center;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--fg-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.form-group label .optional {
  color: var(--fg-muted);
  font-weight: 400;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}

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

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.auth-btn {
  width: 100%;
  padding: 13px;
  margin-top: 6px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 8px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: opacity 0.2s, transform 0.1s;
}

.auth-btn:hover {
  opacity: 0.9;
}

.auth-btn:active {
  transform: scale(0.98);
}

.auth-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-switch {
  text-align: center;
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.auth-switch a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.auth-switch a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .auth-card {
    padding: 32px 20px;
    border-radius: 12px;
  }
}