.login-page {
  --hero-from: #173d7c;
  --hero-to: #3b78db;
  --brand-pulse: #173d7c;

  display: grid;
  grid-template-columns: minmax(380px, 5fr) 6fr;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
}

/* Brand panel */

.login-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(0.75rem, 4vh, 2.5rem);
  padding: clamp(1rem, 6vh, 3rem) clamp(2rem, 5vw, 4rem);
  overflow: hidden;
  color: #eaf1fd;
  background:
    radial-gradient(
      circle at 85% 10%,
      rgba(170, 205, 255, 0.35),
      transparent 45%
    ),
    radial-gradient(circle at 0% 100%, rgba(0, 0, 0, 0.25), transparent 55%),
    linear-gradient(160deg, var(--hero-from), var(--hero-to));
}

/* Subtle grid texture */
.login-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 85%);
  mask-image: linear-gradient(to bottom, black, transparent 85%);
  pointer-events: none;
}

.login-hero > * {
  position: relative;
}

.login-hero__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #ffffff;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.login-hero__brand svg {
  color: #ffffff;
}

.login-hero__body h1 {
  max-width: 14ch;
  color: #ffffff;
  font-size: clamp(1.5rem, min(3.2vw, 5.6vh), 2.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.login-hero__body > p {
  max-width: 42ch;
  margin-top: clamp(0.5rem, 2vh, 1rem);
  color: rgba(234, 241, 253, 0.82);
  font-size: clamp(0.875rem, 2.2vh, 1.05rem);
  line-height: 1.55;
}

.login-hero__features {
  display: grid;
  gap: clamp(0.5rem, 2vh, 1.1rem);
  margin: clamp(0.9rem, 4vh, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
}

.login-hero__features li {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.login-hero__features strong {
  display: block;
  color: #ffffff;
  font-weight: 600;
}

.login-hero__features strong + span {
  color: rgba(234, 241, 253, 0.75);
  font-size: clamp(0.8rem, 1.9vh, 0.92rem);
  line-height: 1.45;
}

.login-hero__icon {
  display: grid;
  flex: none;
  place-items: center;
  width: clamp(2rem, 5vh, 2.5rem);
  height: clamp(2rem, 5vh, 2.5rem);
  color: #d6e5fd;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
}

.login-hero__footer {
  color: rgba(234, 241, 253, 0.6);
  font-size: clamp(0.78rem, 1.8vh, 0.85rem);
}

/* Form panel */

.login-main {
  display: grid;
  place-items: center;
  padding: clamp(0.75rem, 4vh, 2.5rem) 1.25rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.login-card__mobile-brand {
  display: none;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.05rem;
}

.login-card__header h2 {
  font-size: clamp(1.4rem, 4.2vh, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.015em;
}

.login-card__header p {
  margin-top: 0.4rem;
  color: var(--muted);
}

.login-form {
  display: grid;
  gap: clamp(0.7rem, 2.4vh, 1.15rem);
  margin-top: clamp(1rem, 4.5vh, 2rem);
}

.login-field {
  display: grid;
  gap: 0.4rem;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
}

.login-input {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0 0.85rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
}

.login-input:focus-within {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.login-input input {
  flex: 1;
  min-width: 0;
  padding: clamp(0.55rem, 1.7vh, 0.8rem) 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 400;
  background: transparent;
  border: none;
  border-radius: 0;
}

.login-input input:focus,
.login-input input:focus-visible {
  outline: none;
  box-shadow: none;
}

/* Keep browser autofill from painting a coloured block inside the field. */
.login-input input:-webkit-autofill,
.login-input input:-webkit-autofill:hover,
.login-input input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--text);
  caret-color: var(--text);
  box-shadow: 0 0 0 1000px var(--surface) inset;
  transition: background-color 9999s ease-out 0s;
}

.login-input input::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.login-input__toggle {
  display: grid;
  place-items: center;
  margin-right: -0.4rem;
  padding: 0.4rem;
  color: var(--muted);
  background: transparent;
  border: none;
  border-radius: 6px;
}

.login-input__toggle:hover:not(:disabled) {
  color: var(--accent);
  background: var(--accent-soft);
  filter: none;
}

.login-error {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.75rem 0.9rem;
  color: var(--danger);
  font-size: 0.9rem;
  background: var(--danger-soft);
  border: 1px solid var(--danger-soft);
  border-color: color-mix(in srgb, var(--danger) 25%, transparent);
  border-radius: 10px;
}

.login-error svg {
  flex: none;
  margin-top: 0.05rem;
}

.login-submit {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  justify-content: center;
  margin-top: 0.4rem;
  padding: clamp(0.6rem, 1.8vh, 0.85rem) 1rem;
  color: var(--accent-contrast);
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--accent) 70%, transparent);
  transition:
    background 0.15s,
    transform 0.1s;
}

.login-submit:hover:not(:disabled) {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.login-submit:disabled {
  cursor: progress;
  opacity: 0.85;
}

.login-submit:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

.login-submit:active:not(:disabled) {
  transform: translateY(1px);
}

.login-spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: login-spin 0.7s linear infinite;
}

@keyframes login-spin {
  to {
    transform: rotate(360deg);
  }
}

.login-forgot {
  justify-self: end;
  margin-top: -0.45rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}

.login-forgot:hover {
  text-decoration: underline;
}

.login-card__help {
  margin-top: clamp(0.9rem, 3.5vh, 1.75rem);
  padding-top: clamp(0.75rem, 2.5vh, 1.25rem);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

/* Small screens: hide the brand panel, keep a compact brand above the form */

@media (max-width: 860px) {
  .login-page {
    grid-template-columns: 1fr;
  }

  .login-hero {
    display: none;
  }

  .login-card__mobile-brand {
    display: flex;
  }

  .login-main {
    align-items: start;
    padding-top: 12vh;
  }
}

/* Longer forms (registration, password change) may scroll on short screens. */
.login-page--scroll .login-hero {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
}

.login-page--scroll .login-main {
  padding-top: clamp(1.5rem, 6vh, 3rem);
  padding-bottom: clamp(1.5rem, 6vh, 3rem);
}

.login-card__help a,
.link-button {
  color: var(--accent);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.login-card__help a:hover,
.link-button:hover {
  text-decoration: underline;
}

.login-input select {
  flex: 1;
  min-width: 0;
  padding: 0.8rem 0;
  color: var(--text);
  font: inherit;
  background: transparent;
  border: none;
}

.login-input select:focus-visible {
  outline: none;
}

.register-success {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.5rem;
  padding: 1.1rem;
  background: var(--accent-soft);
  border-radius: 12px;
}

.register-success .username {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 1.05rem;
}

@media (prefers-reduced-motion: reduce) {
  .login-spinner {
    animation-duration: 2s;
  }
}