/* ── Auth pages ── */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "DM Sans", -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
}

button, input { font-family: inherit; font-size: inherit; }

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.auth-card h1 {
  font-family: "DM Sans", -apple-system, "Segoe UI", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

.auth-card .subtitle {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  font-size: 13px;
}

.auth-card form {
  display: grid;
  gap: 1rem;
}

.auth-card label {
  display: grid;
  gap: 0.3rem;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.auth-card input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  padding: 0.5rem 0.6rem;
  transition: border-color 0.18s ease;
}

.auth-card input:focus {
  outline: none;
  border-color: var(--text);
  box-shadow: 0 0 0 3px var(--border);
}
.auth-card input:focus-visible,
.auth-card button:focus-visible,
.theme-toggle:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.auth-card input::placeholder { color: var(--text-muted); }

.auth-card button {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--bg);
  padding: 0.55rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  margin-top: 0.25rem;
}

.auth-card button:hover {
  background: var(--text-secondary);
  border-color: var(--text-secondary);
}
.auth-card button:disabled {
  opacity: 0.65;
  cursor: wait;
}
.auth-card button:disabled:hover {
  background: var(--text);
  border-color: var(--text);
}

.auth-card .error {
  color: var(--danger);
  font-size: 12px;
  margin: 0;
  padding: 0.5rem 0.75rem;
  background: var(--danger-soft);
  border-radius: 6px;
  display: none;
}

.auth-card .error.visible {
  display: block;
}

.auth-card .footer {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

.auth-card .footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.auth-card .footer a:hover {
  color: var(--accent-hover);
}

.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  font-family: "DM Sans", -apple-system, "Segoe UI", sans-serif;
  transition: color 0.15s ease;
}

.theme-toggle:hover {
  color: var(--text);
  background: var(--surface-hover);
}