/* Attractive sign-in / auth shell — matches IAPTC home look */
html:has(.auth-split) {
  height: 100%;
}
.auth-split {
  --font: "Sora", system-ui, sans-serif;
  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --ink: #0E5C82;
  --ink-soft: #4A7E99;
  --paper: #E6F5FB;
  --surface: #ffffff;
  --line: rgba(14, 92, 130, 0.12);
  --sea: #3999CE;
  --sea-deep: #1D77A5;
  --amber: #FCD116;
  --night: #0E5C82;
  min-height: 100dvh;
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--night);
  display: grid;
  grid-template-columns: minmax(280px, 1.05fr) minmax(320px, 0.95fr);
}
.auth-split-visual {
  position: relative;
  overflow: hidden;
  min-height: 100dvh;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem 2.25rem 2.4rem;
}
.auth-split-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(165deg, rgba(8, 28, 48, 0.35) 0%, rgba(8, 28, 48, 0.82) 55%, rgba(8, 28, 48, 0.94) 100%),
    url("../img/conference/life-4.jpg?v=wa2") center 40%/cover no-repeat;
  animation: auth-pan 22s ease-in-out infinite alternate;
  z-index: 0;
}
@keyframes auth-pan {
  from { transform: scale(1); }
  to { transform: scale(1.08) translate(-1%, -1%); }
}
.auth-split-visual > * { position: relative; z-index: 1; }
.auth-brand {
  position: absolute;
  top: 1.5rem;
  left: 2.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
}
.auth-brand img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: contain;
  background: #fff;
  padding: 2px;
}
.auth-brand:hover { color: var(--amber); }
.auth-visual-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 0.75rem;
}
.auth-visual-kicker::before {
  content: "";
  display: inline-block;
  width: 1.6rem;
  height: 2px;
  background: var(--amber);
  margin-right: 0.55rem;
  vertical-align: middle;
}
.auth-split-visual h1 {
  font-family: var(--display);
  font-size: clamp(1.9rem, 3.4vw, 2.85rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 14ch;
  margin: 0 0 0.85rem;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.auth-split-visual > p {
  max-width: 34ch;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.98rem;
  line-height: 1.55;
  margin: 0 0 1.5rem;
}
.auth-visual-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.auth-visual-chips li {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
}
.auth-split-panel {
  background:
    radial-gradient(ellipse 70% 40% at 100% 0%, rgba(57, 153, 206,) 0.1), transparent 55%),
    radial-gradient(ellipse 50% 35% at 0% 100%, rgba(252, 209, 22, 0.12), transparent 50%),
    var(--paper);
  display: grid;
  place-items: center;
  padding: 2rem 1.5rem;
  min-height: 100dvh;
}
.auth-panel-card {
  width: min(100%, 400px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 1.85rem 1.7rem 1.55rem;
  box-shadow: 0 24px 50px rgba(10, 37, 64, 0.1);
  animation: auth-rise 0.7s ease both;
}
@keyframes auth-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.auth-panel-card .auth-mobile-brand {
  display: none;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
}
.auth-panel-card .auth-mobile-brand img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
}
.auth-panel-card h1 {
  font-family: var(--display);
  font-size: 1.75rem;
  letter-spacing: -0.03em;
  margin: 0 0 0.35rem;
  color: var(--ink);
}
.auth-panel-lead {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0 0 1.25rem;
  line-height: 1.5;
}
.auth-split .field {
  margin-bottom: 0.85rem;
}
.auth-split .field input {
  padding: 0.78rem 0.95rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.auth-split .field input:focus {
  outline: none;
  border-color: var(--sea);
  box-shadow: 0 0 0 4px rgba(57, 153, 206,) 0.18);
}
.auth-split .btn-primary {
  background: linear-gradient(135deg, var(--sea) 0%, var(--sea-deep) 100%);
  border: 0;
  border-radius: 12px;
  padding: 0.85rem 1.2rem;
  font-weight: 700;
  box-shadow: 0 12px 28px rgba(57, 153, 206,) 0.28);
  margin-top: 0.35rem;
}
.auth-split .btn-primary:hover {
  filter: brightness(1.05);
  color: #fff;
}
.auth-split .btn-amber {
  border-radius: 12px;
  font-weight: 700;
}
.auth-foot-link {
  margin: 1rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
  text-align: center;
}
.auth-foot-link a {
  color: var(--sea-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
}
.auth-foot-link a:hover { color: var(--night); }
.auth-contact {
  margin: 0.85rem 0 0;
  font-size: 0.85rem;
  text-align: center;
  color: var(--ink-soft);
}
.auth-contact a {
  color: var(--sea-deep);
  font-weight: 700;
}
.auth-divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1.15rem 0 0.95rem;
}
.auth-split .lang-switch {
  margin: 0 auto 0.85rem;
  width: fit-content;
  border-color: var(--line);
  color: var(--ink);
  display: flex;
}
.auth-split .lang-switch a.is-active {
  background: var(--sea);
  color: #fff;
}
.auth-split .error {
  background: #fdecea;
  color: #b42318;
  border-radius: 10px;
  padding: 0.65rem 0.8rem;
  margin-bottom: 0.9rem;
  font-size: 0.88rem;
}

@media (max-width: 900px) {
  .auth-split {
    grid-template-columns: 1fr;
  }
  .auth-split-visual {
    min-height: 220px;
    padding: 1.25rem 1.25rem 1.5rem;
    justify-content: flex-end;
  }
  .auth-brand { display: none; }
  .auth-split-visual h1 {
    font-size: 1.55rem;
    max-width: none;
  }
  .auth-split-visual > p { display: none; }
  .auth-visual-chips { display: none; }
  .auth-split-panel {
    min-height: auto;
    padding: 1.25rem 1rem 2rem;
    place-items: start center;
  }
  .auth-panel-card .auth-mobile-brand { display: inline-flex; }
  .auth-panel-card {
    width: min(100%, 440px);
    box-shadow: 0 16px 36px rgba(10, 37, 64, 0.08);
  }
}