/* Login page — form card, auth tabs, success state */

.login-split-page {
  --login-card-radius: 24px;
  --login-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --login-space-1: 8px;
  --login-space-2: 12px;
  --login-space-3: 16px;
  --login-space-4: 24px;
  --login-space-5: 32px;
  --login-space-6: 40px;
  --login-text-xs: 11px;
  --login-text-sm: 13px;
  --login-text-base: 15px;
  --login-text-lg: clamp(24px, 3.2vw, 30px);
  font-variant-numeric: tabular-nums;
}

.login-split-form-body {
  position: relative;
  align-content: center;
  padding: clamp(20px, 4vh, 40px) clamp(24px, 5vw, 48px) clamp(12px, 2vh, 20px);
}

.login-split-form-body::before {
  content: '';
  position: absolute;
  width: min(420px, 80vw);
  height: min(420px, 80vw);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -52%);
  border-radius: 50%;
  background:
    radial-gradient(circle, color-mix(in srgb, var(--accent, var(--brand-cyan)) 14%, transparent), transparent 68%);
  pointer-events: none;
  opacity: 0.55;
  filter: blur(2px);
}

.login-form-stack {
  display: flex;
  flex-direction: column;
  gap: var(--login-space-4);
}

.login-card-intro {
  display: flex;
  flex-direction: column;
  gap: var(--login-space-3);
  padding-bottom: var(--login-space-4);
  border-bottom: 1px solid color-mix(in srgb, var(--portal-line, #e2e8f0) 72%, transparent);
}

.login-card-heading {
  min-width: 0;
  flex: 1;
}

.login-notice-stack {
  display: flex;
  flex-direction: column;
  gap: var(--login-space-2);
}

.login-notice-stack:empty {
  display: none;
}

.login-notice-stack .notice {
  margin: 0;
}

.login-form-main {
  display: flex;
  flex-direction: column;
  gap: var(--login-space-3);
}

.login-form-foot {
  padding-top: var(--login-space-4);
  border-top: 1px solid color-mix(in srgb, var(--portal-line, #e2e8f0) 65%, transparent);
}

.login-form-foot .login-security-tip {
  margin-top: 0;
}

.login-form-card {
  position: relative;
  z-index: 1;
  width: min(480px, 100%);
  padding: clamp(28px, 4.5vw, 40px);
  border-radius: var(--login-card-radius);
  background:
    radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--accent, var(--brand-cyan)) 6%, transparent), transparent 38%),
    radial-gradient(circle at 0% 100%, rgba(255, 107, 61, 0.04), transparent 42%),
    color-mix(in srgb, var(--portal-panel, #fff) 94%, transparent);
  border: 1px solid color-mix(in srgb, var(--portal-line, #e2e8f0) 88%, var(--accent, var(--brand-cyan)) 12%);
  box-shadow:
    var(--portal-shadow, 0 16px 40px rgba(15, 23, 42, 0.08)),
    0 0 0 1px color-mix(in srgb, var(--portal-panel, #fff) 40%, transparent) inset;
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
}

.login-form-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--accent, var(--brand-cyan)) 28%, transparent),
    transparent 42%,
    color-mix(in srgb, var(--brand-orange, #ff6b3d) 18%, transparent)
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.55;
}

.login-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--login-space-3);
  margin: 0;
}

.login-card-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--brand-gradient-soft, linear-gradient(135deg, rgba(0, 180, 216, 0.12), rgba(255, 107, 61, 0.08)));
  border: 1px solid color-mix(in srgb, var(--accent, var(--brand-cyan)) 20%, transparent);
  color: var(--accent-strong, var(--brand-cyan-deep));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent, var(--brand-cyan)) 10%, transparent);
}

.login-card-icon svg {
  width: 22px;
  height: 22px;
}

.login-split-page .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong, var(--brand-cyan-deep));
}

.login-split-page h1 {
  margin: 0;
  font-size: var(--login-text-lg);
  line-height: 1.25;
  letter-spacing: var(--portal-display-tracking, -0.04em);
  font-weight: 800;
  text-wrap: balance;
}

.login-split-page .lead {
  margin: 0;
  max-width: 36em;
  color: var(--portal-muted, var(--muted, #64748b));
  font-size: var(--login-text-base);
  line-height: 1.7;
  text-wrap: pretty;
}

.login-split-page .actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.login-split-page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 11px;
  border: 0;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.login-split-page .btn:hover { transform: translateY(-1px); }
.login-split-page .btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.login-split-page .btn-primary {
  color: #fff;
  text-decoration: none;
  gap: 8px;
}

.login-split-page .btn-glow {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 48px;
  font-size: 15px;
  letter-spacing: 0.01em;
}

.login-split-page .btn-glow::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 38%,
    rgba(255, 255, 255, 0.22) 50%,
    transparent 62%
  );
  transform: translateX(-120%);
  transition: transform 0.55s var(--login-ease);
}

.login-split-page .btn-glow:hover::after {
  transform: translateX(120%);
}

.login-split-page .btn-arrow {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform 0.2s var(--login-ease);
}

.login-split-page .btn-glow:hover .btn-arrow {
  transform: translateX(3px);
}
.login-split-page .btn-secondary {
  background: color-mix(in srgb, var(--portal-line, #e2e8f0) 55%, var(--portal-panel, #fff) 45%);
  color: var(--portal-text, var(--text, #0f172a));
  text-decoration: none;
}
.login-split-page .btn-secondary:hover {
  background: color-mix(in srgb, var(--portal-line, #e2e8f0) 72%, var(--portal-panel, #fff) 28%);
  text-decoration: none;
}

.login-split-page .meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.login-split-page .meta-item {
  border: 1px solid color-mix(in srgb, var(--portal-line, #e2e8f0) 90%, var(--accent, var(--brand-cyan)) 10%);
  border-radius: 14px;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--portal-panel, #fff) 88%, var(--accent, var(--brand-cyan)) 4%);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-split-page .meta-item:hover {
  border-color: color-mix(in srgb, var(--accent, var(--brand-cyan)) 24%, var(--portal-line, #e2e8f0));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent, var(--brand-cyan)) 8%, transparent);
}

.login-split-page .meta-item span {
  display: block;
  color: var(--portal-hint, var(--hint, #94a3b8));
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.login-split-page .meta-item strong {
  font-size: 14px;
  word-break: break-word;
  color: var(--portal-text, var(--text, #0f172a));
}

.login-split-page .notice {
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #bbf7d0;
  background: #f0fdf4;
  color: #166534;
  font-size: 13px;
  line-height: 1.55;
}

.login-split-page .notice.warn {
  border-color: #fde68a;
  background: #fffbeb;
  color: #92400e;
}

.login-split-page .notice.blocked,
.login-split-page .notice.error {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.login-split-page .auth-tabs {
  display: inline-flex;
  gap: 4px;
  width: 100%;
  margin-bottom: var(--login-space-3);
  padding: 4px;
  border-radius: 14px;
  border: 1px solid var(--portal-line, var(--line, #e2e8f0));
  background: color-mix(in srgb, var(--portal-panel, #fff) 82%, var(--portal-muted, #64748b) 18%);
}

.login-split-page .auth-tab {
  flex: 1;
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--portal-muted, var(--muted, #64748b));
  font: inherit;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.login-split-page .auth-tab.active {
  background: var(--portal-panel, #fff);
  border-color: color-mix(in srgb, var(--accent, var(--brand-cyan)) 22%, var(--portal-line, #e2e8f0));
  color: var(--accent-strong, var(--brand-cyan-deep));
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent, var(--brand-cyan)) 10%, transparent);
}

.login-split-page .auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--login-space-3);
}

.login-split-page .auth-form label {
  display: block;
  font-size: var(--login-text-sm);
  font-weight: 600;
  color: var(--portal-muted, var(--muted, #64748b));
  margin-bottom: var(--login-space-1);
  letter-spacing: 0.02em;
}

.login-split-page .auth-panel {
  display: none;
  flex-direction: column;
  gap: var(--login-space-2);
}

.login-split-page .auth-panel.active {
  display: flex;
}

.login-split-page .input-wrap {
  position: relative;
  margin-bottom: 0;
}

.login-split-page .input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--portal-hint, var(--hint, #94a3b8));
  pointer-events: none;
  transition: color 0.15s ease;
}

.login-split-page .input-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.login-split-page .auth-form input {
  width: 100%;
  padding: 13px 14px 13px 44px;
  border-radius: 12px;
  border: 1px solid var(--portal-line, var(--line, #e2e8f0));
  font: inherit;
  margin-bottom: 0;
  background: color-mix(in srgb, var(--portal-panel, #fff) 96%, var(--portal-muted, #64748b) 4%);
  color: var(--portal-text, var(--text, #0f172a));
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.login-split-page .auth-form input::placeholder {
  color: var(--portal-hint, var(--hint, #94a3b8));
}

.login-split-page .input-wrap:focus-within .input-icon {
  color: var(--accent, var(--brand-cyan));
}

.login-split-page .auth-form input:focus {
  outline: none;
  border-color: var(--accent, var(--brand-cyan));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent, var(--brand-cyan)) 18%, transparent);
  background: var(--portal-panel, #fff);
}

.login-split-page .success-panel {
  display: none;
  margin-top: 4px;
  animation: loginFadeIn 0.45s var(--login-ease) both;
}

.login-split-page .success-panel.active { display: block; }

.login-split-page .success-hero {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
  padding: 18px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, #16a34a 28%, var(--portal-line, #e2e8f0));
  background: linear-gradient(135deg, color-mix(in srgb, #16a34a 8%, var(--portal-panel, #fff)), var(--portal-panel, #fff));
}

.login-split-page .success-check {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #fff;
  box-shadow: 0 8px 24px rgba(22, 163, 74, 0.35);
  animation: loginPop 0.5s var(--login-ease) 0.1s both;
}

.login-split-page .success-check svg {
  width: 22px;
  height: 22px;
}

.login-split-page .success-title {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--portal-text, #0f172a);
}

.login-split-page .success-sub {
  margin: 0;
  font-size: 14px;
  color: var(--portal-muted, #64748b);
  line-height: 1.55;
}

.login-split-page .details-hint {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--portal-muted, #64748b);
  line-height: 1.55;
}

.login-split-page .login-security-tip {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 0;
  font-size: var(--login-text-sm);
  line-height: 1.6;
}

.login-split-page .btn-account-switch {
  width: 100%;
  margin-top: var(--login-space-3);
}

.login-split-page .login-security-tip svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  opacity: 0.85;
}

@keyframes loginFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes loginPop {
  from { opacity: 0; transform: scale(0.6); }
  to { opacity: 1; transform: scale(1); }
}

.login-split-page details {
  margin-top: 22px;
  border: 1px solid var(--portal-line, var(--line, #e2e8f0));
  border-radius: 14px;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--portal-panel, #fff) 90%, var(--accent, var(--brand-cyan)) 3%);
}

.login-split-page summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--portal-muted, var(--muted, #64748b));
  user-select: none;
}

.login-split-page .code-box {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.login-split-page code {
  flex: 1;
  display: block;
  word-break: break-all;
  background: color-mix(in srgb, var(--portal-panel, #fff) 94%, var(--portal-muted, #64748b) 6%);
  border: 1px solid var(--portal-line, var(--line, #e2e8f0));
  padding: 12px 14px;
  border-radius: 11px;
  font-size: 13px;
  font-family: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;
  color: var(--portal-text, var(--text, #0f172a));
}

.login-split-page .copy-btn {
  min-height: auto;
  padding: 0 16px;
  background: color-mix(in srgb, var(--portal-line, #e2e8f0) 55%, var(--portal-panel, #fff) 45%);
  color: var(--portal-text, var(--text, #0f172a));
}

.login-split-page .copy-btn.ok {
  background: color-mix(in srgb, #16a34a 14%, var(--portal-panel, #fff) 86%);
  color: #166534;
}

.login-split-form-top {
  border-bottom: 1px solid color-mix(in srgb, var(--portal-line, #e2e8f0) 70%, transparent);
  background: color-mix(in srgb, var(--portal-header-bg, rgba(255, 255, 255, 0.88)) 72%, transparent);
  backdrop-filter: blur(10px);
}

/* Dark mode */
[data-theme="dark"] .login-split-page .meta-item,
[data-theme="dark"] .login-split-page details,
[data-theme="dark"] .login-split-page .auth-form input,
[data-theme="dark"] .login-split-page code {
  background: color-mix(in srgb, var(--portal-panel) 92%, #0b1220 8%);
  color: var(--portal-text);
  border-color: var(--portal-line);
}

[data-theme="dark"] .login-split-page .auth-tabs {
  background: color-mix(in srgb, var(--portal-panel) 72%, #0b1220 28%);
}

[data-theme="dark"] .login-split-page .auth-tab.active {
  background: color-mix(in srgb, var(--portal-panel) 88%, var(--accent) 6%);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.28);
}

[data-theme="dark"] .login-split-page .notice.warn {
  background: #422006;
  border-color: #854d0e;
  color: #fde68a;
}

[data-theme="dark"] .login-split-page .notice.error,
[data-theme="dark"] .login-split-page .notice.blocked {
  background: #450a0a;
  border-color: #7f1d1d;
  color: #fecaca;
}

[data-theme="dark"] .login-split-page .notice:not(.warn):not(.error):not(.blocked) {
  background: #052e16;
  border-color: #166534;
  color: #bbf7d0;
}

[data-theme="dark"] .login-split-page .copy-btn.ok {
  background: #052e16;
  color: #86efac;
}

[data-theme="dark"] .login-form-card {
  box-shadow:
    var(--portal-shadow),
    0 0 48px color-mix(in srgb, var(--accent) 6%, transparent);
}

[data-theme="dark"] .login-split-page .success-hero {
  background: linear-gradient(135deg, color-mix(in srgb, #16a34a 12%, var(--portal-panel)), var(--portal-panel));
  border-color: color-mix(in srgb, #16a34a 22%, var(--portal-line));
}

@media (prefers-reduced-motion: reduce) {
  .login-split-page .success-panel,
  .login-split-page .success-check,
  .login-split-page .btn-glow::after {
    animation: none;
    transition: none;
  }
}

@media (max-width: 640px) {
  .login-split-page .meta-grid { grid-template-columns: 1fr; }
  .login-form-card { padding: 24px 20px; width: 100%; }
  .login-card-header { gap: 12px; }
  .login-card-icon { width: 42px; height: 42px; border-radius: 12px; }
  .login-card-intro { padding-bottom: var(--login-space-3); }
  .login-form-stack { gap: var(--login-space-3); }
}