/* =============================================================================
   LEarn2arn — Multi-login (centered about-us style · ultra-modern)
   Form primitives: auth-form.css · shared layout: main.css
   ============================================================================= */

/* ----- Page section background ----- */
.section-multi-login {
  background:
    radial-gradient(ellipse 55% 70% at 50% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 62%),
    radial-gradient(ellipse 45% 55% at 85% 100%, color-mix(in srgb, var(--btn-primary-bg) 14%, transparent), transparent 58%),
    var(--bg-elevated);
  padding-block: clamp(2rem, 5vw, var(--space-6));
}

.section-multi-login .section-kicker {
  text-align: center;
}

.section-multi-login h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
  text-align: center;
  margin-bottom: var(--space-2);
}

.section-multi-login .section-lead {
  text-align: center;
  max-width: 38rem;
  margin-inline: auto;
}

/* ----- Login card shell + credential form overrides ----- */
.multi-login-shell {
  width: min(100%, 42rem);
  margin-top: var(--space-4);
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) + 0.15rem);
  background: var(--surface);
  box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 10%, transparent);
  display: grid;
  gap: var(--space-3);
  animation: multi-login-rise 0.65s var(--ease) both;
}

.multi-login-shell .login-alert {
  margin-bottom: 0;
}

.multi-login-shell .login-form {
  width: 100%;
  text-align: left;
}

.multi-login-social-highlight {
  display: grid;
  gap: var(--space-2);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--border));
  background:
    linear-gradient(
      155deg,
      color-mix(in srgb, var(--highlight-bg) 55%, var(--surface)) 0%,
      color-mix(in srgb, var(--accent-soft) 72%, var(--surface)) 48%,
      color-mix(in srgb, var(--btn-primary-bg) 12%, var(--surface)) 100%
    );
  box-shadow: inset 0 1px 0 color-mix(in srgb, #ffffff 12%, transparent);
  text-align: center;
  animation: multi-login-social-attention 3.2s var(--ease) infinite;
}

@keyframes multi-login-social-attention {
  0%,
  100% {
    transform: scale(1);
    border-color: color-mix(in srgb, var(--accent) 38%, var(--border));
    box-shadow:
      inset 0 1px 0 color-mix(in srgb, #ffffff 12%, transparent),
      0 0 0 0 color-mix(in srgb, var(--btn-primary-bg) 0%, transparent);
  }
  50% {
    transform: scale(1.012);
    border-color: color-mix(in srgb, var(--btn-primary-bg) 55%, var(--border));
    box-shadow:
      inset 0 1px 0 color-mix(in srgb, #ffffff 12%, transparent),
      0 0 0 4px color-mix(in srgb, var(--btn-primary-bg) 18%, transparent),
      0 10px 28px color-mix(in srgb, var(--btn-primary-bg) 16%, transparent);
  }
}

/* ----- Social OAuth highlight block ----- */
.multi-login-social-highlight__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 1.12;
  color: var(--text);
}

.multi-login-social__prefer {
  margin: 0 auto;
  max-width: 28rem;
  color: var(--text-secondary);
  font-size: clamp(1.32rem, 3.6vw, 1.5rem);
  font-weight: 600;
  line-height: 1.45;
}

.multi-login-social__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.multi-login-social__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 3rem;
  min-width: min(100%, 11.5rem);
  padding: 0.7rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 88%, var(--bg));
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.multi-login-social__btn--discord {
  justify-self: center;
  min-height: 4.14rem;
  min-width: min(100%, 29rem);
  width: min(100%, 29rem);
  padding: 0.85rem 2.4rem;
  font-size: clamp(1.65rem, 4.5vw, 2.35rem);
  gap: 0.95rem;
  border-color: transparent;
  background: var(--btn-primary-bg);
  color: var(--btn-primary-fg);
  box-shadow: 0 10px 28px color-mix(in srgb, var(--btn-primary-bg) 28%, transparent);
}

.multi-login-social__discord-icon {
  display: inline-block;
  width: 2.4rem;
  height: 2.4rem;
  flex-shrink: 0;
  background-color: currentColor;
  -webkit-mask-image: url("../rSupplies/login-discord.svg");
  mask-image: url("../rSupplies/login-discord.svg");
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.multi-login-social__btn--secondary {
  min-height: 4.05rem;
  min-width: min(100%, 15.4rem);
  padding: 0.9rem 1.35rem;
  font-size: 1.32rem;
  gap: 0.85rem;
}

.multi-login-social__btn--secondary img {
  width: 1.65rem;
  height: 1.65rem;
}

.multi-login-social__btn:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border-strong));
  background: var(--surface);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 16%, transparent);
}

.multi-login-social__btn--discord:hover {
  border-color: transparent;
  background: var(--btn-primary-bg-hover);
  color: var(--btn-primary-fg);
  box-shadow: 0 14px 32px color-mix(in srgb, var(--btn-primary-bg) 34%, transparent);
}

.multi-login-social__btn img {
  width: 1.25rem;
  height: 1.25rem;
  object-fit: contain;
}

.multi-login-social__more-wrap {
  display: grid;
  justify-items: center;
  gap: 0.35rem;
  margin-top: 0.15rem;
}

.multi-login-social__more-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.15rem;
  height: 2.15rem;
  padding: 0;
  border: 2px solid var(--btn-primary-bg);
  border-radius: 999px;
  background: color-mix(in srgb, var(--btn-primary-bg) 14%, var(--surface));
  color: var(--btn-primary-bg);
  cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.multi-login-social__more-toggle:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--btn-primary-bg) 22%, var(--surface));
  box-shadow: 0 6px 16px color-mix(in srgb, var(--btn-primary-bg) 22%, transparent);
}

.multi-login-social__more-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--btn-primary-bg) 35%, transparent);
}

.multi-login-social__more-arrow {
  width: 0.55rem;
  height: 0.55rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-0.1rem);
  transition: transform 0.2s var(--ease);
}

.multi-login-social__more-toggle[aria-expanded="true"] .multi-login-social__more-arrow {
  transform: rotate(-135deg) translateY(-0.05rem);
}

.multi-login-social__more-caption {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
}

.multi-login-social__more {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.15rem;
}

.multi-login-social__more[hidden] {
  display: none;
}

/* ----- Divider between OAuth and password login ----- */
.multi-login-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.85rem;
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
}

.multi-login-divider::before,
.multi-login-divider::after {
  content: "";
  height: 1px;
  background: var(--border);
}

/* ----- Collapsible username/password login ----- */
.multi-login-credentials {
  display: grid;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 88%, var(--bg));
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.multi-login-credentials.is-open {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border-strong));
  background: var(--surface);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 10%, transparent);
}

.multi-login-credentials__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  width: 100%;
  min-height: 3rem;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  text-align: left;
  transition: background-color 0.2s var(--ease);
}

.multi-login-credentials__toggle:hover {
  background: color-mix(in srgb, var(--accent-soft) 35%, transparent);
}

.multi-login-credentials__toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.multi-login-credentials__toggle img {
  width: 1.35rem;
  height: 1.35rem;
  flex-shrink: 0;
  color: var(--accent);
}

.multi-login-credentials__toggle span:not(.multi-login-credentials__chevron) {
  flex: 1;
}

.multi-login-credentials__chevron {
  width: 0.55rem;
  height: 0.55rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.7;
  transition: transform 0.2s var(--ease);
  flex-shrink: 0;
}

.multi-login-credentials__toggle[aria-expanded="true"] .multi-login-credentials__chevron {
  transform: rotate(-135deg);
  translate: 0 0.15rem;
}

.multi-login-credentials.is-open .multi-login-credentials__toggle {
  border-bottom: 1px solid var(--border);
}

.multi-login-credentials__panel {
  display: grid;
  gap: 0.95rem;
  padding: 0.9rem 1rem 1.05rem;
}

.multi-login-credentials__panel[hidden] {
  display: none;
}

.multi-login-credentials__hint {
  margin: 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
}

.multi-login-form-head {
  display: grid;
  gap: 0.35rem;
  text-align: center;
}

.multi-login-form-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.65rem);
  letter-spacing: -0.03em;
}

.multi-login-form-head__lead {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

[data-theme="macos"] .multi-login-shell,
[data-theme="linux"] .multi-login-shell {
  background: var(--surface);
}

[data-theme="macos"] .multi-login-social-highlight {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

@keyframes multi-login-rise {
  from {
    opacity: 0;
    transform: translateY(0.85rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 540px) {
  .multi-login-social__btn span {
    font-size: 0.88rem;
  }
}

@media (max-width: 767px) {
  .multi-login-shell .login-now-btn {
    width: 80%;
    margin-inline: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .multi-login-shell,
  .multi-login-social-highlight {
    animation: none !important;
  }
}