.auth-header {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: var(--glass);
  -webkit-backdrop-filter: var(--glass);
}
.auth-header-inner { display: flex; align-items: center; }

.auth-main {
  min-height: calc(100vh - 72px);
  min-height: calc(100dvh - 72px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  backdrop-filter: var(--glass);
  -webkit-backdrop-filter: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
}

.auth-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 28px;
  background: rgba(252, 232, 236, 0.5);
  padding: 4px;
  border-radius: var(--radius-sm);
}
.auth-tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 11px;
  border-radius: 12px;
  font: inherit;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.auth-tab.active {
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.auth-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  text-align: center;
  letter-spacing: -0.02em;
}
.auth-sub {
  margin: 0 0 28px;
  text-align: center;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

.auth-form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field span { font-size: 13px; font-weight: 600; }
.field input {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font: inherit;
  font-size: 16px;
  background: var(--card-solid);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.error {
  color: #b91c1c;
  font-size: 14px;
  text-align: center;
  margin: 0;
  padding: 10px 14px;
  background: #fef2f2;
  border-radius: var(--radius-sm);
}
.ok-msg {
  color: #15803d;
  font-size: 14px;
  text-align: center;
  margin: 0;
  padding: 10px 14px;
  background: #f0fdf4;
  border-radius: var(--radius-sm);
}
.auth-back {
  display: block;
  margin-top: 24px;
  text-align: center;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.auth-back:hover { color: var(--accent); }

@media (max-width: 480px) {
  .auth-main { padding: 20px 16px; align-items: flex-start; }
  .auth-card { padding: 28px 20px; }
  .auth-title { font-size: 1.5rem; }
  .btn-primary { width: 100%; }
}