.ycsa-login-page {
  --login-indigo: #5142b8;
  --login-indigo-dark: #2f276f;
  --login-emerald: #10b981;
  position: relative;
  flex: 1;
  overflow: hidden;
  background: #f5f4fb;
  padding: 54px 16px 80px;
}

.ycsa-login-backdrop {
  position: absolute;
  inset: 0 0 auto;
  height: 360px;
  overflow: hidden;
  background: linear-gradient(135deg, #40349d 0%, #6350cf 58%, #4738aa 100%);
}

.ycsa-login-grid {
  position: absolute;
  inset: 0;
  opacity: .22;
  background-image: radial-gradient(rgba(255, 255, 255, .65) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}

.ycsa-login-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(4px);
}

.ycsa-login-orb-one {
  right: 11%;
  top: -100px;
  width: 320px;
  height: 320px;
  background: rgba(79, 230, 174, .18);
}

.ycsa-login-orb-two {
  left: 7%;
  top: 145px;
  width: 170px;
  height: 170px;
  background: rgba(255, 255, 255, .09);
}

.ycsa-login-shell {
  position: relative;
  z-index: 2;
  width: min(980px, 100%);
  margin: 0 auto;
}

.ycsa-login-intro {
  max-width: 660px;
  margin: 0 auto 34px;
  color: #fff;
  text-align: center;
}

.ycsa-login-intro p {
  margin: 0 0 10px;
  color: #a7f3d0;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
}

.ycsa-login-intro h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.2;
}

.ycsa-login-card {
  display: grid;
  grid-template-columns: minmax(0, 41%) minmax(0, 59%);
  overflow: hidden;
  min-height: 560px;
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 30px 90px rgba(36, 27, 92, .22);
}

.ycsa-login-brand {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 52px 44px 46px;
  background: linear-gradient(155deg, #211b52 0%, #3e328e 62%, #5142b8 100%);
  color: #fff;
}

.ycsa-login-brand::after {
  position: absolute;
  right: -75px;
  bottom: -110px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 0 36px rgba(255, 255, 255, .035), 0 0 0 72px rgba(255, 255, 255, .025);
}

.ycsa-login-kicker {
  display: inline-flex;
  margin-bottom: 18px;
  color: #6ee7b7;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .18em;
}

.ycsa-login-brand h2 {
  max-width: 310px;
  margin: 0 0 16px;
  font-size: 29px;
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.32;
}

.ycsa-login-brand p {
  margin: 0;
  color: rgba(255, 255, 255, .66);
  font-size: 13px;
  line-height: 1.85;
}

.ycsa-login-visual {
  position: relative;
  width: 210px;
  height: 180px;
  margin: 22px auto 12px;
}

.ycsa-login-visual-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 142px;
  height: 142px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: inset 0 0 50px rgba(255, 255, 255, .04), 0 0 0 22px rgba(255, 255, 255, .035);
}

.ycsa-login-visual-core,
.ycsa-login-visual-chip {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 18px 45px rgba(13, 9, 45, .3);
}

.ycsa-login-visual-core {
  left: 50%;
  top: 50%;
  width: 72px;
  height: 72px;
  border-radius: 22px;
  background: #10b981;
  transform: translate(-50%, -50%) rotate(-7deg);
}

.ycsa-login-visual-core svg {
  width: 30px;
  height: 30px;
  transform: rotate(7deg);
}

.ycsa-login-visual-chip {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 15px;
  background: rgba(255, 255, 255, .14);
  font-size: 11px;
  font-weight: 800;
  backdrop-filter: blur(8px);
}

.chip-code { left: 4px; top: 22px; }
.chip-ai { right: 0; top: 18px; color: #a7f3d0; }
.chip-play { right: 16px; bottom: 2px; }

.ycsa-login-benefits {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: rgba(255, 255, 255, .78);
  font-size: 12px;
}

.ycsa-login-benefits li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.ycsa-login-benefits svg { color: #6ee7b7; }

.ycsa-login-form-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 58px 64px;
}

.ycsa-login-form-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}

.ycsa-login-form-icon {
  display: flex;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: #eefcf5;
  color: #059669;
}

.ycsa-login-form-head h2 {
  margin: 0 0 4px;
  color: #17142e;
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -.02em;
}

.ycsa-login-form-head p,
.ycsa-login-help {
  margin: 0;
  color: #8a869e;
  font-size: 12px;
}

.ycsa-login-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: -12px 0 22px;
  border: 1px solid #fecdd3;
  border-radius: 12px;
  background: #fff1f2;
  padding: 11px 13px;
  color: #be123c;
  font-size: 12px;
  line-height: 1.5;
}

.ycsa-login-form {
  display: grid;
  gap: 20px;
}

.ycsa-login-field label,
.ycsa-login-label-row {
  color: #464158;
  font-size: 12px;
  font-weight: 700;
}

.ycsa-login-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ycsa-login-label-row a {
  color: var(--login-indigo);
  font-weight: 600;
}

.ycsa-login-input-wrap {
  position: relative;
  margin-top: 9px;
}

.ycsa-login-input-wrap > span {
  position: absolute;
  left: 16px;
  top: 50%;
  color: #a7a2b7;
  transform: translateY(-50%);
}

.ycsa-login-input-wrap input {
  width: 100%;
  height: 54px;
  border: 1px solid #e5e2ed;
  border-radius: 14px;
  outline: 0;
  background: #fbfafd;
  padding: 0 16px 0 46px;
  color: #25213d;
  font-size: 14px;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.ycsa-login-input-wrap input:focus {
  border-color: #6655cf;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(81, 66, 184, .09);
}

.ycsa-login-remember {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 8px;
  color: #777287;
  font-size: 12px;
}

.ycsa-login-remember input {
  width: 15px;
  height: 15px;
  accent-color: var(--login-indigo);
}

.ycsa-login-submit {
  display: inline-flex;
  width: 100%;
  height: 54px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 0;
  border-radius: 14px;
  background: var(--login-emerald);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 15px 30px rgba(16, 185, 129, .22);
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}

.ycsa-login-submit:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(16, 185, 129, .28);
}

.ycsa-login-help {
  margin-top: 24px;
  border-top: 1px solid #eeeaf4;
  padding-top: 20px;
  line-height: 1.7;
  text-align: center;
}

.ycsa-auth-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
  margin: -8px 0 24px;
  padding: 4px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #f8fafc;
}

.ycsa-auth-tabs button {
  min-height: 38px;
  padding: 7px 5px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #64748b;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.ycsa-auth-tabs button[aria-selected="true"] {
  background: #fff;
  color: #059669;
  box-shadow: 0 1px 4px rgba(15, 23, 42, .09);
}

.ycsa-login-form[hidden] { display: none !important; }

.ycsa-code-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  gap: 10px;
}

.ycsa-code-send {
  border: 1px solid #d1fae5;
  border-radius: 10px;
  background: #ecfdf5;
  color: #047857;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.ycsa-code-send:disabled,
.ycsa-login-submit:disabled { cursor: wait; opacity: .65; }

.ycsa-login-alert.is-success {
  border-color: #a7f3d0;
  background: #ecfdf5;
  color: #047857;
}

@media (max-width: 820px) {
  .ycsa-login-page { padding-top: 42px; }
  .ycsa-login-card { grid-template-columns: 1fr; }
  .ycsa-login-brand { min-height: 330px; padding: 38px 34px 34px; }
  .ycsa-login-brand h2 { max-width: 500px; font-size: 26px; }
  .ycsa-login-brand p { max-width: 580px; }
  .ycsa-login-visual { position: absolute; right: 28px; bottom: 42px; width: 190px; transform: scale(.8); transform-origin: right bottom; opacity: .72; }
  .ycsa-login-benefits { margin-top: 34px; }
  .ycsa-login-form-panel { padding: 44px 34px 48px; }
}

@media (max-width: 560px) {
  .ycsa-login-page { padding: 30px 12px 56px; }
  .ycsa-login-backdrop { height: 300px; }
  .ycsa-login-intro { margin-bottom: 24px; padding: 0 10px; }
  .ycsa-login-intro h1 { font-size: 27px; }
  .ycsa-login-card { border-radius: 22px; }
  .ycsa-login-brand { min-height: 286px; padding: 30px 26px; }
  .ycsa-login-brand h2 { max-width: 300px; font-size: 23px; }
  .ycsa-login-brand p { max-width: 300px; }
  .ycsa-login-visual { right: -24px; bottom: 8px; transform: scale(.62); opacity: .55; }
  .ycsa-login-benefits { gap: 8px; margin-top: 24px; }
  .ycsa-login-form-panel { padding: 36px 24px 40px; }
  .ycsa-login-form-head { margin-bottom: 28px; }
  .ycsa-login-form-head h2 { font-size: 23px; }
  .ycsa-auth-tabs button { font-size: 11px; }
  .ycsa-code-row { grid-template-columns: 1fr; }
  .ycsa-code-send { min-height: 42px; }
}