/* Auth surfaces — Character.ai-inspired stage, card on the right */

:root {
  --auth-brand: #3b488e;
  --auth-brand-deep: #243056;
  --auth-brand-soft: rgba(59, 72, 142, 0.12);
  --auth-ink: #12141c;
  --auth-muted: #5a6275;
  --auth-line: #d5dae6;
  --auth-line-strong: #b4bcd0;
  --auth-canvas: #e7ebf3;
  --auth-card: #ffffff;
  --auth-field: #ffffff;
  --auth-accent: #0f766e;
  --auth-danger: #b42318;
  --auth-danger-bg: #fef3f2;
  --auth-success: #0f766e;
  --auth-success-bg: #f0fdf9;
  --auth-radius: 28px;
  --auth-radius-sm: 10px;
  --auth-font: "DM Sans", "Segoe UI", sans-serif;
  --auth-display: "Outfit", "DM Sans", sans-serif;
  --auth-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --auth-shadow-focus: 0 0 0 3px rgba(59, 72, 142, 0.22);
  --auth-card-shadow:
    0 1px 2px rgba(18, 24, 40, 0.06),
    0 12px 32px rgba(18, 24, 40, 0.12),
    0 24px 48px rgba(18, 24, 40, 0.05);
  --auth-visual-shadow:
    0 8px 24px rgba(21, 32, 61, 0.18),
    0 2px 6px rgba(21, 32, 61, 0.1);
  --auth-visual-border: 1px solid rgba(255, 255, 255, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

.auth-body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--auth-font);
  color: var(--auth-ink);
  background: #eceff4;
  -webkit-font-smoothing: antialiased;
}

.auth-shell {
  display: block;
  width: min(100% - 2.5rem, 1240px);
  margin: 0 auto;
  padding: 1.5rem 0;
  flex: 0 0 auto;
}

/*
  Character.ai-style intersection:
  - Image is a large rounded plane on the LEFT (not full width)
  - Login card sits on the RIGHT and straddles the image edge
  - Part of the card overlays the image; the rest sits on the page background
*/
.auth-stage {
  position: relative;
  min-height: min(72vh, 640px);
  overflow: visible;
}

.auth-visual {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  /* Ends before the right edge so the card can straddle this boundary */
  width: min(84%, calc(100% - 5.5rem));
  overflow: hidden;
  border-radius: 32px;
  background: #15203d;
  color: #f4f6fb;
  isolation: isolate;
  box-shadow: var(--auth-visual-shadow);
  border: var(--auth-visual-border);
}

.auth-visual__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center left;
  transform: scale(1.02);
  animation: auth-media-drift 28s var(--auth-ease) infinite alternate;
}

.auth-visual__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(21, 32, 61, 0.28) 0%, rgba(21, 32, 61, 0.08) 42%, transparent 68%);
  pointer-events: none;
}

.auth-visual__content {
  position: absolute;
  left: clamp(1.5rem, 3.5vw, 2.75rem);
  top: 50%;
  z-index: 1;
  max-width: min(28rem, 46%);
  animation: auth-brand-in 0.7s var(--auth-ease) both;
}

.auth-visual__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 0.85rem;
}

.auth-visual__logo {
  --auth-logo-h: clamp(4.06rem, 6.9vw, 5.31rem);
  height: var(--auth-logo-h);
  width: auto;
  max-width: min(100%, 27.5rem);
  object-fit: contain;
  object-position: left bottom;
  display: block;
  /* Trim transparent padding baked into logo_s1.png (≈5.7% L, 31.5% T, 24.5% B) */
  margin-left: calc(var(--auth-logo-h) * -0.255);
  margin-bottom: calc(var(--auth-logo-h) * -0.2);
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.28));
}

.auth-visual__name {
  margin: 0;
  font-family: var(--auth-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: #f8fafc;
  text-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.auth-visual__title {
  margin: 0 0 0.45rem;
  font-family: var(--auth-display);
  font-size: clamp(1.45rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: #f8fafc;
}

.auth-visual__tagline {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.55;
  color: rgba(226, 232, 240, 0.9);
  max-width: 28ch;
}

/* —— Login card: straddles image’s right edge (Character.ai flipped) —— */
.auth-card {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 3;
  width: min(100%, 25.5rem);
  background: var(--auth-card);
  border-radius: 24px;
  box-shadow: var(--auth-card-shadow);
  padding: clamp(1.6rem, 2.5vw, 2.2rem);
  animation: auth-panel-in 0.65s var(--auth-ease) both;
}

.auth-card__inner {
  width: 100%;
}

.auth-card__eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--auth-accent);
}

.auth-card__title {
  margin: 0 0 0.4rem;
  font-family: var(--auth-display);
  font-size: clamp(1.45rem, 2.2vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--auth-ink);
}

.auth-card__lead {
  margin: 0 0 1.45rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--auth-muted);
}

/* —— Form fields —— */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.auth-field__label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--auth-ink);
}

.auth-field__input,
.auth-form .form-control {
  width: 100%;
  height: 2.85rem;
  padding: 0 0.95rem;
  border: 1px solid var(--auth-line);
  border-radius: var(--auth-radius-sm);
  background: var(--auth-field);
  color: var(--auth-ink);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.4;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.auth-field__input::placeholder,
.auth-form .form-control::placeholder {
  color: #8b93a7;
}

.auth-field__input:hover,
.auth-form .form-control:hover {
  border-color: var(--auth-line-strong);
}

.auth-field__input:focus,
.auth-form .form-control:focus {
  outline: none;
  border-color: var(--auth-brand);
  box-shadow: var(--auth-shadow-focus);
  background: #fff;
}

.auth-field__input.is-invalid,
.auth-form .form-control.input-validation-error {
  border-color: var(--auth-danger);
}

.auth-field__hint,
.auth-form .field-validation-error,
.auth-form .text-danger {
  font-size: 0.8rem;
  color: var(--auth-danger);
  margin: 0;
}

.auth-password {
  position: relative;
}

.auth-password .auth-field__input,
.auth-password .form-control {
  padding-right: 2.85rem;
}

.auth-password__toggle {
  position: absolute;
  right: 0.35rem;
  bottom: 0.3rem;
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--auth-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.auth-password__toggle:hover,
.auth-password__toggle:focus-visible {
  color: var(--auth-brand);
  background: var(--auth-brand-soft);
  outline: none;
}

.auth-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.auth-check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--auth-muted);
  cursor: pointer;
  user-select: none;
}

.auth-check input {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--auth-brand);
  cursor: pointer;
}

.auth-link {
  color: var(--auth-brand);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.15s ease;
}

.auth-link:hover,
.auth-link:focus-visible {
  color: var(--auth-brand-deep);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.auth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 2.95rem;
  margin-top: 0.2rem;
  padding: 0.7rem 1.1rem;
  border: 0;
  border-radius: var(--auth-radius-sm);
  background: var(--auth-brand);
  color: #fff;
  font-family: var(--auth-display);
  font-size: 0.98rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s var(--auth-ease), box-shadow 0.2s ease;
}

.auth-btn:hover {
  background: var(--auth-brand-deep);
}

.auth-btn:focus-visible {
  outline: none;
  box-shadow: var(--auth-shadow-focus);
}

.auth-btn:active {
  transform: translateY(1px);
}

.auth-alert {
  margin: 0.15rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: var(--auth-radius-sm);
  font-size: 0.88rem;
  line-height: 1.45;
}

.auth-alert--error {
  background: var(--auth-danger-bg);
  color: var(--auth-danger);
  border: 1px solid rgba(180, 35, 24, 0.18);
}

.auth-alert--success {
  background: var(--auth-success-bg);
  color: var(--auth-success);
  border: 1px solid rgba(15, 118, 110, 0.2);
}

.auth-footer {
  margin-top: 1.35rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--auth-line);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: var(--auth-muted);
}

.auth-footer a {
  font-weight: 600;
}

.auth-name-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.auth-shell--solo {
  width: min(100% - 2rem, 28rem);
  margin: 0 auto;
  padding: 2rem 0;
  place-items: center;
}

.auth-solo {
  width: 100%;
  text-align: center;
  background: var(--auth-card);
  border-radius: 22px;
  box-shadow: var(--auth-card-shadow);
  padding: 2.25rem 1.75rem;
  animation: auth-panel-in 0.65s var(--auth-ease) both;
}

.auth-solo__logo {
  max-height: 3rem;
  width: auto;
  margin-bottom: 1.25rem;
}

.auth-solo__title {
  font-family: var(--auth-display);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.auth-solo__body {
  color: var(--auth-muted);
  margin: 0 0 1.5rem;
  line-height: 1.5;
}

.auth-solo .auth-btn {
  margin-top: 0;
  text-decoration: none;
}

.auth-error__code {
  margin: 0 0 0.35rem;
  font-family: var(--auth-display);
  font-size: clamp(2.75rem, 8vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--auth-brand);
}

@keyframes auth-panel-in {
  from {
    opacity: 0;
    transform: translate(18px, -50%);
  }
  to {
    opacity: 1;
    transform: translate(0, -50%);
  }
}

@keyframes auth-rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes auth-brand-in {
  from {
    opacity: 0;
    transform: translateY(calc(-50% + 12px));
  }
  to {
    opacity: 1;
    transform: translateY(-50%);
  }
}

@keyframes auth-media-drift {
  from {
    transform: scale(1.02) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.07) translate3d(-1%, -0.8%, 0);
  }
}

@media (max-width: 991.98px) {
  .auth-body {
    justify-content: flex-start;
    padding:
      max(0.75rem, env(safe-area-inset-top))
      max(0.75rem, env(safe-area-inset-right))
      max(1.25rem, env(safe-area-inset-bottom))
      max(0.75rem, env(safe-area-inset-left));
  }

  .auth-shell {
    width: min(100% - 1.5rem, 26rem);
    margin-inline: auto;
    padding: 0.5rem 0 1.75rem;
  }

  .auth-stage {
    position: relative;
    min-height: auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding-bottom: 1.5rem;
  }

  .auth-visual {
    position: absolute;
    top: 0;
    left: 0.7rem;
    right: 0.7rem;
    bottom: -1.5rem;
    z-index: 0;
    display: block;
    width: auto;
    min-height: 100%;
    height: auto;
    padding: 1.35rem 1.15rem 1.5rem;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--auth-visual-shadow);
    border: var(--auth-visual-border);
    background:
      linear-gradient(145deg, #1a2448 0%, #243666 52%, #1a3538 100%);
  }

  .auth-visual__media {
    opacity: 0.42;
    object-position: 72% 42%;
    animation: none;
    transform: none;
  }

  .auth-visual__veil {
    background:
      linear-gradient(180deg, rgba(21, 32, 61, 0.18) 0%, rgba(21, 32, 61, 0.52) 100%);
  }

  .auth-visual__content {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    max-width: 100%;
    transform: none;
    animation-name: auth-rise;
  }

  .auth-visual__brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0;
  }

  .auth-visual__logo {
    --auth-logo-h: 3.5rem;
    height: var(--auth-logo-h);
    max-width: 15.75rem;
    flex: 0 0 auto;
    object-position: left bottom;
    margin-left: calc(var(--auth-logo-h) * -0.255);
    margin-bottom: calc(var(--auth-logo-h) * -0.2);
    transform: none;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.22));
  }

  .auth-visual__name {
    margin: 0;
    padding-left: 0;
    border-left: 0;
    font-size: 1.6rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
    text-shadow: none;
    color: #ffffff;
  }

  .auth-visual__tagline {
    display: block;
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.45;
    color: rgba(226, 232, 240, 0.9);
    max-width: 34ch;
  }

  .auth-card {
    position: relative;
    top: auto;
    right: auto;
    z-index: 1;
    transform: none;
    width: 100%;
    margin: 11rem 0 0;
    border-radius: 18px;
    box-shadow: var(--auth-card-shadow);
    padding: 1.25rem 1.1rem 1.3rem;
    animation-name: auth-rise;
  }

  .auth-card__title {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
  }

  .auth-card__lead {
    margin-bottom: 1.1rem;
    font-size: 0.9rem;
  }

  .auth-form {
    gap: 0.85rem;
  }

  .auth-field__input,
  .auth-form .form-control {
    height: 2.65rem;
    font-size: 0.92rem;
  }

  .auth-btn {
    min-height: 2.75rem;
    font-size: 0.94rem;
  }

  .auth-footer {
    margin-top: 1.1rem;
    padding-top: 0.95rem;
    font-size: 0.88rem;
  }

  .auth-card__eyebrow {
    letter-spacing: 0.1em;
  }

  .auth-name-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575.98px) {
  .auth-shell {
    width: min(100%, 100%);
    padding-inline: 0.15rem;
  }

  .auth-visual {
    left: 0.55rem;
    right: 0.55rem;
    bottom: -1.25rem;
    padding: 1.15rem 1rem 1.3rem;
    border-radius: 18px;
  }

  .auth-stage {
    padding-bottom: 1.25rem;
  }

  .auth-visual__content {
    gap: 0.6rem;
  }

  .auth-visual__brand {
    gap: 0.65rem;
  }

  .auth-visual__logo {
    --auth-logo-h: 3.25rem;
    height: var(--auth-logo-h);
    max-width: 14.625rem;
    margin-left: calc(var(--auth-logo-h) * -0.255);
    margin-bottom: calc(var(--auth-logo-h) * -0.2);
    transform: none;
  }

  .auth-visual__name {
    padding-left: 0;
    font-size: 1.42rem;
  }

  .auth-visual__tagline {
    font-size: 0.875rem;
    line-height: 1.42;
    max-width: 100%;
  }

  .auth-card {
    margin-top: 10.5rem;
    border-radius: 16px;
    padding: 1.1rem 0.95rem 1.15rem;
  }

  .auth-card__title {
    font-size: 1.25rem;
  }

  .auth-card__lead {
    margin-bottom: 1rem;
    font-size: 0.875rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .auth-card,
  .auth-visual__content,
  .auth-solo,
  .auth-visual__media {
    animation: none !important;
  }

  .auth-visual__media {
    transform: none;
  }

  .auth-visual__content {
    transform: translateY(-50%);
  }

  .auth-btn:active {
    transform: none;
  }
}

@media (max-width: 991.98px) and (prefers-reduced-motion: reduce) {
  .auth-visual__content {
    transform: none;
  }
}

@media (min-width: 992px) and (prefers-reduced-motion: reduce) {
  .auth-card {
    transform: translateY(-50%);
  }
}