:root {
  --purple: #7c3aed;
  --purple-dark: #6d28d9;
  --purple-light: #8b5cf6;
  --ink: #142033;
  --muted: #64748b;
  --line: #e2e8f0;
  --navy: #0b1f44;
  --navy-mid: #1a4388;
  --gold: #f5c042;
  --gold-soft: #ffe6a3;
  --font: "Outfit", "Segoe UI", sans-serif;
  --display: "Syne", "Outfit", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

body.auth-body {
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse at 8% 0%, rgba(245, 192, 66, 0.2), transparent 40%),
    radial-gradient(ellipse at 95% 10%, rgba(26, 67, 136, 0.22), transparent 46%),
    radial-gradient(ellipse at 70% 100%, rgba(124, 58, 237, 0.14), transparent 42%),
    linear-gradient(165deg, #eef3fb 0%, #f7f5ff 48%, #f3f7fc 100%);
  position: relative;
  overflow-x: hidden;
}

.auth-fx {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.fx-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(42px);
  opacity: 0.5;
  animation: orbDrift 14s ease-in-out infinite alternate;
}

.fx-1 {
  width: 320px;
  height: 320px;
  left: -80px;
  top: 10%;
  background: radial-gradient(circle, rgba(245, 192, 66, 0.5), transparent 70%);
}

.fx-2 {
  width: 380px;
  height: 380px;
  right: -100px;
  bottom: 5%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.4), transparent 70%);
  animation-duration: 18s;
  animation-delay: -4s;
}

.fx-3 {
  width: 240px;
  height: 240px;
  left: 40%;
  top: 55%;
  background: radial-gradient(circle, rgba(26, 67, 136, 0.35), transparent 70%);
  animation-duration: 16s;
  animation-delay: -7s;
}

@keyframes orbDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(36px, -44px, 0) scale(1.12); }
}

.auth-back {
  position: fixed;
  top: 1.15rem;
  left: 1.15rem;
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 5;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(226, 232, 240, 0.9);
  backdrop-filter: blur(10px);
  transition: color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.auth-back:hover {
  color: var(--navy);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(11, 31, 68, 0.1);
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 4.5rem 1rem 2rem;
  position: relative;
  z-index: 1;
}

.auth-stage {
  width: min(100%, 980px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  border-radius: 28px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow:
    0 30px 80px rgba(11, 31, 68, 0.14),
    0 1px 0 rgba(255, 255, 255, 0.85) inset;
  backdrop-filter: blur(14px);
  animation: stageIn 0.85s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes stageIn {
  from { opacity: 0; transform: translateY(28px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-visual {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  color: #fff;
}

.auth-visual-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  animation: visualZoom 12s ease-in-out infinite alternate;
}

@keyframes visualZoom {
  from { transform: scale(1.08); }
  to { transform: scale(1.16); }
}

.auth-visual-tint {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, rgba(11, 31, 68, 0.88) 0%, rgba(26, 67, 136, 0.72) 55%, rgba(11, 31, 68, 0.82) 100%),
    radial-gradient(circle at 80% 15%, rgba(245, 192, 66, 0.35), transparent 40%);
}

.auth-visual-copy {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem 1.75rem 2.1rem;
  animation: copyRise 1s 0.15s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes copyRise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.auth-visual-kicker {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 0.9rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(245, 192, 66, 0.16);
  border: 1px solid rgba(245, 192, 66, 0.35);
  color: var(--gold-soft);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.auth-visual-copy h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 3.2vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 0.75rem;
}

.auth-visual-copy h1 span {
  color: var(--gold);
}

.auth-visual-copy > p {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 500;
  line-height: 1.5;
  max-width: 28ch;
  margin-bottom: 1.25rem;
}

.auth-visual-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.auth-visual-points li {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.78rem;
  font-weight: 700;
}

.auth-card {
  background: rgba(255, 255, 255, 0.94);
  padding: 1.85rem 1.65rem 1.55rem;
  animation: cardIn 0.9s 0.1s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateX(18px); }
  to { opacity: 1; transform: translateX(0); }
}

.auth-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.auth-brand img {
  height: 58px;
  width: auto;
  max-width: min(240px, 100%);
  object-fit: contain;
  margin-bottom: 0.55rem;
  animation: logoPop 0.8s 0.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes logoPop {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-title {
  font-family: var(--display);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--navy);
}

.auth-brand span {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
  font-weight: 600;
}

.role-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.35rem;
  margin-bottom: 1.05rem;
  padding: 0.3rem;
  background: linear-gradient(180deg, #f1f5f9, #eef2ff);
  border-radius: 999px;
  border: 1px solid #e2e8f0;
}

.role-btn {
  border: 0;
  background: transparent;
  border-radius: 999px;
  min-height: 2.4rem;
  font: inherit;
  font-weight: 800;
  font-size: 0.84rem;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.role-btn:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.role-btn.is-active {
  background: #fff;
  color: var(--navy);
  box-shadow: 0 6px 16px rgba(11, 31, 68, 0.1);
}

.mode-tabs {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 1.2rem;
  border-bottom: 2px solid var(--line);
}

.mode-tab {
  border: 0;
  background: transparent;
  min-height: 2.7rem;
  font: inherit;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s ease;
  position: relative;
  z-index: 1;
}

.mode-tab:hover:not(:disabled) {
  color: var(--ink);
}

.mode-tab.is-active {
  color: var(--navy);
}

.mode-tab:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.mode-ink {
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--navy-mid));
  border-radius: 999px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateX(0);
}

.mode-tabs.is-signup .mode-ink {
  transform: translateX(100%);
}

.auth-panels {
  position: relative;
}

.auth-form {
  display: grid;
  gap: 0.9rem;
  animation: formIn 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.auth-step {
  display: grid;
  gap: 0.85rem;
  width: 100%;
}

#kindFields {
  display: grid;
  gap: 0.85rem;
}

.auth-form.is-off,
.auth-step.is-off {
  display: none !important;
}

.auth-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 750;
  color: #334155;
}

.auth-form input,
.auth-form select {
  min-height: 2.9rem;
  border-radius: 14px;
  border: 1px solid #dbe3ef;
  padding: 0 0.95rem;
  font: inherit;
  background: #f8fafc;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.auth-form input:hover,
.auth-form select:hover {
  background: #fff;
}

.auth-form input:focus,
.auth-form select:focus {
  outline: none;
  background: #fff;
  border-color: #c4b5fd;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.12);
  transform: translateY(-1px);
}

.auth-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 3.15rem;
  margin-top: 0.25rem;
  padding: 0.75rem 1.25rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--gold) 0%, #e8a820 55%, #d49212 100%);
  color: var(--navy);
  font: inherit;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: 0 14px 28px rgba(245, 192, 66, 0.35);
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
  animation: ctaGlow 2.8s ease-in-out infinite;
}

@keyframes ctaGlow {
  0%, 100% { box-shadow: 0 14px 28px rgba(245, 192, 66, 0.32); }
  50% { box-shadow: 0 18px 40px rgba(245, 192, 66, 0.55); }
}

.auth-submit:hover:not(:disabled) {
  filter: brightness(1.04);
  transform: translateY(-2px);
}

.auth-submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  animation: none;
}

.auth-error {
  color: #b91c1c;
  font-size: 0.86rem;
  background: #fef2f2;
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
  border: 1px solid #fecaca;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.auth-hint {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.45;
}

.auth-linkish {
  border: 0;
  background: none;
  color: var(--navy-mid);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  justify-self: start;
  padding: 0.35rem 0;
}

.auth-switch {
  margin-top: 0.25rem;
  text-align: center;
  font-size: 0.88rem;
  color: var(--muted);
}

.auth-switch button {
  border: 0;
  background: none;
  color: var(--navy-mid);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 860px) {
  .auth-stage {
    grid-template-columns: 1fr;
    width: min(100%, 460px);
  }

  .auth-visual {
    min-height: 210px;
  }

  .auth-visual-copy {
    padding: 1.35rem 1.25rem;
  }

  .auth-visual-copy h1 {
    font-size: 1.7rem;
  }

  .auth-visual-copy > p,
  .auth-visual-points {
    display: none;
  }

  .auth-card {
    padding: 1.45rem 1.2rem 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .auth-fx {
    display: none;
  }
}