* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

button, input { font: inherit; }

.skip-link {
  position: fixed;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 10;
  transform: translateY(-160%);
  padding: 10px 12px;
  border-radius: var(--radius-control);
  background: var(--color-primary);
  color: #fff;
}

.skip-link:focus { transform: translateY(0); }

.auth-layout {
  width: min(1040px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 1.1fr);
  align-items: center;
  gap: 48px;
  padding: 48px 0;
}

.brand-panel {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-accent-bg);
}

.brand-panel::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 12px;
  right: -30px;
  bottom: 22px;
  border-radius: 999px;
  background: linear-gradient(90deg, #bdb4ff, #f96bee, #fe8c2d, #ffd552);
  transform: rotate(-7deg);
  opacity: .72;
}

/* Оригинальная локальная композиция по утверждённой многоцветной палитре. */
.auth-login-page .brand-panel {
  min-height: 430px;
  background: var(--color-surface);
  isolation: isolate;
}

.auth-login-page .brand-panel > * { position: relative; z-index: 1; }

.auth-login-page .brand-panel::before,
.auth-login-page .brand-panel::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border: 0;
  border-radius: 0;
  opacity: 1;
  box-shadow: none;
}

.auth-login-page .brand-panel::before {
  z-index: 0;
  inset: 142px -105px -105px -135px;
  width: auto;
  height: auto;
  background:
    radial-gradient(ellipse at 22% 9%, rgba(115, 183, 255, .94), transparent 43%),
    radial-gradient(ellipse at 76% 24%, rgba(255, 183, 33, .95), transparent 48%),
    radial-gradient(ellipse at 43% 82%, rgba(249, 107, 238, .96), transparent 59%),
    linear-gradient(128deg, #7cafff 4%, #bdb4ff 30%, #f96bee 56%, #fe8c2d 80%, #ffd552 100%);
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 57% 100%);
  transform: rotate(-8deg) translate3d(0, 0, 0);
  animation: login-gradient-drift 13s ease-in-out infinite alternate;
}

.auth-login-page .brand-panel::after {
  z-index: 0;
  top: 159px;
  right: -89px;
  bottom: -100px;
  left: 43%;
  width: auto;
  height: auto;
  background: linear-gradient(114deg, rgba(255, 213, 82, 0), rgba(255, 213, 82, .78) 42%, #fe8c2d 74%, #ffb65e);
  clip-path: polygon(37% 0, 100% 0, 100% 100%, 82% 100%);
  transform: rotate(-7deg) translate3d(0, 0, 0);
  animation: login-highlight-drift 17s ease-in-out infinite alternate;
}

@keyframes login-gradient-drift {
  to { transform: rotate(-5deg) translate3d(-16px, 13px, 0); }
}

@keyframes login-highlight-drift {
  to { transform: rotate(-10deg) translate3d(14px, -12px, 0); }
}

.brand-mark {
  display: grid;
  place-items: center;
  flex: 0 0 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
}

.eyebrow {
  margin: 0 0 var(--space-sm);
  color: var(--color-primary);
  font-size: 13px;
  line-height: 18px;
  font-weight: 700;
  letter-spacing: .08em;
}

.brand-name {
  margin: 0;
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
}

.brand-copy, .intro {
  margin: var(--space-sm) 0 0;
  color: var(--color-muted);
}

.auth-card {
  width: 100%;
  max-width: 520px;
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

h1 {
  margin: 0;
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
}

form { margin-top: var(--space-lg); }

.field { margin-bottom: var(--space-md); }

label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 13px;
  line-height: 18px;
  font-weight: 600;
}

.form-control {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-control);
  outline: none;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}

.form-control::placeholder { color: var(--color-placeholder); }

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(83, 58, 253, 0.16);
}

.password-row { position: relative; }
.password-row .form-control { padding-right: 94px; }

.password-toggle {
  position: absolute;
  top: 4px;
  right: 4px;
  min-height: 36px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.password-toggle:hover { background: var(--color-accent-bg); }

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: var(--radius-control);
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--motion-fast), background var(--motion-fast), box-shadow var(--motion-fast);
}

.button-primary {
  width: 100%;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-button);
}

.button-primary:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-hover);
  background: var(--color-primary-hover);
  box-shadow: 0 7px 16px rgba(64, 50, 200, .20);
}

.button-secondary {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

.button-secondary:hover { background: var(--color-accent-bg); }

.text-link {
  display: inline-block;
  margin-top: var(--space-md);
  color: var(--color-primary);
  font-weight: 600;
  text-underline-offset: 3px;
}

.notice, .support-note {
  margin-top: var(--space-md);
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
}

.notice-error {
  border-color: var(--color-error);
  background: var(--color-error-bg);
  color: var(--color-error);
}

.notice-success {
  border-color: var(--color-success);
  background: var(--color-success-bg);
  color: var(--color-success);
}

.notice-info, .support-note { background: var(--color-accent-bg); }
.support-note p { margin: var(--space-xs) 0 0; color: var(--color-muted); }
.field-error { margin: var(--space-xs) 0 0; color: var(--color-error); font-size: 13px; }
.caps-hint { margin: var(--space-xs) 0 0; color: var(--color-muted); font-size: 13px; }

@media (max-width: 736px) {
  .auth-layout {
    grid-template-columns: 1fr;
    grid-template-rows: max-content max-content;
    align-content: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
  }
  .brand-panel { padding: var(--space-lg); }
  .auth-login-page .brand-panel { min-height: 164px; }
  .auth-login-page .brand-panel::before {
    inset: -28px -65px -32px 46%;
    clip-path: polygon(17% 0, 100% 0, 100% 100%, 0 100%);
  }
  .auth-login-page .brand-panel::after {
    inset: -24px -65px -32px 78%;
    clip-path: polygon(17% 0, 100% 0, 100% 100%, 0 100%);
  }
  .brand-copy { display: none; }
  .auth-card { max-width: none; padding: var(--space-lg); }
}

@media (prefers-reduced-motion: reduce) {
  .auth-login-page .brand-panel::before,
  .auth-login-page .brand-panel::after { animation: none; }
}

@media (max-width: 390px) {
  .auth-layout { width: min(100% - 16px, 520px); }
  .brand-panel { padding: var(--space-md); }
  .auth-login-page .brand-panel::before { left: 58%; }
  .auth-login-page .brand-panel::after { left: 84%; }
  .brand-name, h1 { font-size: 24px; line-height: 32px; }
  .auth-card { padding: var(--space-md); }
}