/* Nguồn: login-dong-thanh.html — scoped dưới .login-page (Django base.html) */
.login-page {
  font-family: var(--dt-font-sans);
  color: var(--dt-ink);
  background: var(--dt-page-bg);
  font-size: var(--dt-text-ui);
  height: 100svh;
  max-height: 100svh;
  overflow: hidden;
  margin: 0;
  padding: 10px;
  box-sizing: border-box;
}

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

.login-page button,
.login-page input {
  font: inherit;
}

.login-page button {
  cursor: pointer;
}

.login-page .shell {
  max-width: 1480px;
  height: calc(100svh - 20px);
  max-height: calc(100svh - 20px);
  margin: auto;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(110deg, var(--dt-shell-gradient-from), var(--dt-shell-gradient-to));
  box-shadow: 0 16px 55px var(--dt-shell-shadow);
  display: flex;
  flex-direction: column;
}

.login-page .main {
  display: grid;
  grid-template-columns: minmax(0, 50fr) minmax(0, 50fr);
  flex: 1;
  min-height: 0;
  align-items: stretch;
}

.login-page .intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px 4%;
  position: relative;
  overflow: hidden;
  min-height: 0;
  background:
    radial-gradient(circle at 85% 5%, var(--dt-intro-radial) 0 15%, transparent 15.2%),
    var(--dt-intro-gradient);
}

.login-page .brand {
  display: flex;
  align-items: center;
  gap: 18px;
  position: relative;
  z-index: 2;
}

.login-page .logo {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: transparent;
  box-shadow: none;
}

.login-page .logo img,
.login-page .logo .brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0;
  aspect-ratio: 1;
  border-radius: 12px;
}

.login-page .brand strong {
  font-size: 17px;
  line-height: 1.35;
  display: block;
}

.login-page .brand small {
  display: block;
  color: var(--dt-muted);
  margin-top: 4px;
  letter-spacing: 1.2px;
  font-size: 13px;
  font-weight: 600;
}

.login-page .intro h1 {
  font-size: clamp(22px, 2.5vw, 36px);
  line-height: 1.15;
  margin: 22px 0 10px;
  letter-spacing: -0.8px;
  position: relative;
  z-index: 2;
  font-weight: 800;
}

.login-page .intro h1 span {
  color: var(--dt-brand-light);
}

.login-page .lead {
  font-size: 13px;
  color: var(--dt-muted-2);
  line-height: 1.65;
  max-width: 440px;
  position: relative;
  z-index: 2;
  margin: 0;
}

.login-page .lead-em {
  font-weight: 800;
  color: var(--dt-brand-light);
}

.login-page .features {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  position: relative;
  z-index: 2;
}

.login-page .feature {
  display: flex;
  align-items: center;
  gap: 10px;
}

.login-page .feature-icon {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 18px;
  color: white;
  background: var(--dt-feature-blue);
}

.login-page .feature-icon i {
  width: 18px;
  height: 18px;
}

.login-page .feature:nth-child(2) .feature-icon {
  background: var(--dt-feature-green);
}

.login-page .feature:nth-child(3) .feature-icon {
  background: var(--dt-feature-orange);
}

.login-page .feature strong {
  display: block;
  font-size: 13px;
}

.login-page .feature small {
  display: block;
  margin-top: 2px;
  color: var(--dt-muted-4);
  font-size: 13px;
  line-height: 1.35;
}

.login-page .art {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 88%;
  max-width: 460px;
  pointer-events: none;
  opacity: 0.94;
}

.login-page .art img {
  display: block;
  width: 100%;
  height: auto;
  mix-blend-mode: multiply;
  mask-image: linear-gradient(to bottom, transparent 0%, black 18%, black 92%, transparent 100%);
}

.login-page .art::before {
  content: "";
  position: absolute;
  inset: 12% 0 0;
  border-radius: 50%;
  background: var(--dt-art-bg);
  opacity: 0.4;
}

.login-page .login-area {
  padding: 10px 3%;
  display: flex;
  justify-content: center;
  align-items: center;
  align-self: stretch;
  height: 100%;
  min-height: 0;
}

.login-page .login-card {
  background: var(--dt-surface);
  border-radius: 18px;
  box-shadow: 0 14px 45px var(--dt-card-shadow);
  width: 100%;
  max-width: 390px;
  max-height: calc(100% - 8px);
  padding: 16px 18px 12px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  margin: auto 0;
}

.login-page .card-head {
  text-align: center;
  margin-bottom: 14px;
  flex-shrink: 0;
}

.login-page .card-head .logo {
  margin: 0 auto 8px;
  width: 56px;
  height: 56px;
}

.login-page .card-head strong {
  display: block;
  font-size: 14px;
  line-height: 1.35;
}

.login-page .card-head h2 {
  font-size: 17px;
  margin: 8px 0 5px;
  font-weight: 700;
}

.login-page .card-head p {
  color: var(--dt-muted-6);
  line-height: 1.45;
  margin: 0;
  font-size: 13px;
}

.login-page .form-scroll {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.login-page .login-card:has(.register.active) {
  max-width: 460px;
}

.login-page .login-card:has(.register.active) .form-scroll {
  overflow-y: auto;
  max-height: min(46vh, 420px);
}

/* Form controls: static/css/components.css (+ tokens.css) */

.login-page .forgot-password {
  margin: -4px 0 10px;
  text-align: right;
  font-size: 12px;
}

.login-page .forgot-password a {
  color: var(--dt-brand);
  font-weight: 600;
  text-decoration: none;
}

.login-page .forgot-password a:hover {
  color: var(--dt-brand-hover);
  text-decoration: underline;
}

.login-page .shell--auth-simple {
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.login-page .main--auth-simple {
  grid-template-columns: minmax(0, 1fr);
  min-height: 100%;
}

.login-page a.auth-back-link {
  display: inline-flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--dt-btn-height);
  border-radius: var(--dt-radius-control);
  font-size: var(--dt-text-ui);
  font-weight: 700;
  text-decoration: none;
  box-sizing: border-box;
  margin-top: 4px;
}

.login-page a.auth-back-link.primary {
  border: 0;
  color: var(--dt-surface);
  background: var(--dt-brand);
  box-shadow: 0 4px 12px var(--dt-brand-shadow);
}

.login-page a.auth-back-link.primary:hover {
  background: var(--dt-brand-hover);
  color: var(--dt-surface);
}

.login-page a.auth-back-link.secondary {
  border: 1px solid var(--dt-field-border);
  background: var(--dt-surface);
  color: var(--dt-ink);
}

.login-page a.auth-back-link.secondary:hover {
  background: var(--dt-surface-muted);
}

.login-page .or {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0;
  color: var(--dt-placeholder);
  font-size: 13px;
}

.login-page .or::before,
.login-page .or::after {
  content: "";
  height: 1px;
  background: var(--dt-divider);
  flex: 1;
}

.login-page .session {
  background: var(--dt-surface-muted);
  color: var(--dt-muted-5);
  padding: 8px;
  border-radius: 8px;
  text-align: center;
  margin-top: 8px;
  font-size: 13px;
  flex-shrink: 0;
  line-height: 1.4;
}

.login-page .footer {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1.1fr 1.2fr;
  gap: 10px;
  background: var(--dt-surface-soft);
  padding: 10px 18px;
  flex-shrink: 0;
}

.login-page .foot-item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.login-page .foot-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--dt-brand-chip-bg);
  color: var(--dt-brand-accent);
  border-radius: 12px;
}

.login-page .foot-icon svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.8;
}

.login-page .foot-item strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--dt-ink-heading);
  margin: 0 0 2px;
}

.login-page .foot-item a,
.login-page .foot-item small,
.login-page .foot-map {
  display: block;
  font-size: 12px;
  color: var(--dt-muted-3);
  line-height: 1.45;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.login-page .foot-item a:hover,
.login-page .foot-map:hover {
  color: var(--dt-brand-accent);
}

.login-page .message {
  font-size: 13px;
  margin-top: 6px;
  text-align: center;
  color: var(--dt-error-text);
}

.login-page .message--empty:empty {
  display: none;
  margin: 0;
}

.login-page .message--ok {
  color: var(--dt-success-text);
}

.login-page .register {
  display: none;
}

.login-page .register.active {
  display: block;
}

.login-page .signin.hidden {
  display: none;
}

@media (max-width: 1050px) {
  .login-page .intro {
    padding: 20px 5%;
  }

  .login-page .intro h1 {
    font-size: 24px;
  }

  .login-page .art {
    width: 100%;
    max-width: 400px;
    opacity: 0.45;
  }

  .login-page .login-area {
    padding: 16px 4%;
  }

  .login-page .footer {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}

/* < 960px: chỉ form đăng nhập/đăng ký, cuộn trang nếu cần */
@media (max-width: 959px) {
  .login-page {
    height: auto;
    min-height: 100svh;
    max-height: none;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 0;
  }

  .login-page .shell {
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100svh;
    max-height: none;
    margin: 0;
    border-radius: 0;
  }

  .login-page .main {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
  }

  .login-page .intro {
    display: none;
  }

  .login-page .footer {
    display: none;
  }

  .login-page .login-area {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    height: auto;
    padding: 24px 16px;
  }

  .login-page .login-card {
    max-width: min(440px, 100%);
    max-height: none;
    padding: 20px 18px 16px;
    margin: 0 auto;
  }

  .login-page .login-card:has(.register.active) {
    max-width: min(480px, 100%);
  }

  .login-page .form-scroll,
  .login-page .login-card:has(.register.active) .form-scroll {
    overflow: visible;
    max-height: none;
  }

  .login-page .field-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .login-page .login-area {
    padding: 20px 12px 12px;
  }

  .login-page .login-card {
    padding: 16px 14px 14px;
  }
}