/* ============================================================
   AI Enablement Hub — sign-in page
   Layered on css/styles.css (tokens, .btn, .input, .card).
   ============================================================ */

.hidden { display: none !important; }

.login-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.login-theme {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 10;
  border: 1px solid var(--border);
  background: var(--surface);
}

.login-shell {
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 48px 20px 40px;
}

.login-card {
  width: 100%;
  max-width: 430px;
  padding: 30px 30px 26px;
  border-radius: 16px;
}

/* ---------------- brand ---------------- */

.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.login-brand .brand-logo {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 6px 18px rgba(124, 92, 246, 0.4);
}
.login-brand h1 {
  margin: 0;
  font-size: 19px;
  letter-spacing: -0.02em;
}
.login-tagline {
  margin: 3px 0 0;
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------------- error banner ---------------- */

.auth-banner {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-bottom: 16px;
  padding: 11px 13px;
  border-radius: 10px;
  font-size: 13.5px;
  background: var(--red-soft);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: var(--text);
}
.auth-banner .auth-banner-ico { flex: none; line-height: 1.3; }

/* ---------------- provider buttons ---------------- */

.provider-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.provider-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  width: 100%;
  padding: 12px 18px;
  border-radius: 11px;
  font-size: 14.5px;
  font-weight: 650;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
  transition: transform var(--speed) ease, box-shadow var(--speed) ease,
    background var(--speed) ease, border-color var(--speed) ease;
}
.provider-btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  background: var(--surface-3);
  border-color: var(--accent);
  box-shadow: var(--shadow-lift);
}
.provider-btn:active { transform: translateY(0); }
.provider-btn svg { flex: none; }

.login-help {
  margin: 16px 0 0;
  padding: 11px 13px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
  background: var(--accent-soft);
  border: 1px solid transparent;
}
.login-help b { color: var(--text); font-weight: 650; }

.setup-note {
  margin: 14px 0 0;
  padding: 13px 14px;
  border-radius: 10px;
  font-size: 12.8px;
  line-height: 1.55;
  color: var(--text-dim);
  background: var(--amber-soft);
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.setup-note h2 { font-size: 13.5px; margin: 0 0 6px; color: var(--text); }
.setup-note ul { margin: 6px 0 0; padding-left: 18px; }
.setup-note code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--text);
}

.dev-btn {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 1px dashed var(--border-strong);
  transition: color var(--speed) ease, border-color var(--speed) ease;
}
.dev-btn:hover { color: var(--text); border-color: var(--accent); }

/* ---------------- divider + admin ---------------- */

.login-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0 14px;
  color: var(--text-faint);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.login-divider::before,
.login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.admin-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0 auto;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  transition: color var(--speed) ease, background var(--speed) ease;
}
.admin-toggle:hover { color: var(--text); background: var(--surface-2); }
.admin-toggle .chev {
  transition: transform var(--speed) ease;
}
.admin-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }

.admin-panel {
  margin-top: 14px;
  padding: 16px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.admin-panel .field-label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.admin-panel .input { margin-bottom: 12px; background: var(--surface); }
.admin-panel .btn { width: 100%; }

.field-error {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--red);
}

.login-fineprint {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--text-faint);
  text-align: center;
}

.login-foot {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-faint);
  text-align: center;
}
.login-foot a { color: var(--text-dim); }
.login-foot a:hover { color: var(--accent); }

@media (max-width: 480px) {
  .login-shell { padding: 64px 14px 32px; justify-content: flex-start; }
  .login-card { padding: 24px 20px 22px; border-radius: 14px; }
  .login-brand h1 { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  .provider-btn, .provider-btn:hover, .admin-toggle .chev { transition: none; transform: none; }
}