:root {
  --auth-primary: #2563eb;
  --auth-primary-dark: #1e40af;
  --auth-primary-soft: rgba(37, 99, 235, 0.12);
  --auth-muted: #64748b;
  --auth-border: #e2e8f0;
  --auth-card: #ffffff;
  --auth-radius: 1.25rem;
  --auth-sky-start: #f0f9ff;
  --auth-sky-mid: #e0f2fe;
  --auth-sky-end: #f8fafc;
}

.auth-page {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: "Poppins", "Segoe UI", system-ui, sans-serif;
  position: relative;
  background: var(--auth-sky-end);
  color: #1f2937;
  overflow-x: hidden;
}

.auth-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 85% 55% at 100% 0%, rgba(37, 99, 235, 0.14), transparent 55%),
    radial-gradient(ellipse 70% 50% at 0% 100%, rgba(30, 64, 175, 0.1), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 50%, rgba(224, 242, 254, 0.9), transparent 70%),
    linear-gradient(135deg, var(--auth-sky-start) 0%, var(--auth-sky-mid) 42%, var(--auth-sky-end) 100%);
}

.auth-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 32 32'%3E%3Ccircle cx='16' cy='16' r='1' fill='%232563eb' fill-opacity='0.06'/%3E%3C/svg%3E");
  background-size: 32px 32px;
  pointer-events: none;
}

.auth-split {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

@media (min-width: 992px) {
  .auth-split {
    flex-direction: row;
    align-items: stretch;
  }
}

.auth-side.auth-side-full {
  width: 100%;
  background: linear-gradient(165deg, #0b1426 0%, #132347 42%, #1e3a8a 100%);
  color: #fff;
  position: relative;
  padding: 2.5rem 2rem;
  flex-shrink: 0;
  overflow: hidden;
}

@media (min-width: 992px) {
  .auth-side.auth-side-full {
    flex: 0 0 58%;
    width: 58%;
    max-width: 880px;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 2.5rem 2.5rem 2rem;
    display: flex;
  }
}

@media (min-width: 1400px) {
  .auth-side.auth-side-full {
    flex: 0 0 60%;
    width: 60%;
    max-width: 960px;
    padding: 3rem 3rem 2.25rem;
  }
}

.auth-side-bg-pattern {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    radial-gradient(ellipse 90% 55% at 50% 38%, rgba(37, 99, 235, 0.45), transparent 58%),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
  pointer-events: none;
}

.auth-side-bg-pattern::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(1.5px 1.5px at 12% 18%, rgba(255, 255, 255, 0.35), transparent),
    radial-gradient(1.5px 1.5px at 78% 22%, rgba(255, 255, 255, 0.25), transparent),
    radial-gradient(1.5px 1.5px at 88% 70%, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(1.5px 1.5px at 25% 82%, rgba(255, 255, 255, 0.22), transparent);
  pointer-events: none;
}

.auth-side.auth-side-full::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 85%, rgba(255, 255, 255, 0.1), transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.auth-side-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 1.5rem;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.auth-side-brand-block {
  flex: 0 0 auto;
}

.auth-side-visual {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  margin-top: 0.25rem;
}

.auth-side-hero-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: min(62vh, 560px);
  object-fit: cover;
  object-position: center;
  border-radius: 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 20px 50px -12px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}

.auth-side-logo {
  display: block;
  height: clamp(40px, 4vw, 52px);
  width: auto;
  margin-bottom: 0.5rem;
  filter: brightness(0) invert(1);
}

.auth-side-headline {
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 1rem 0 1rem;
  color: #fff;
}

.auth-side-lead {
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0 0 1.5rem;
  opacity: 0.92;
  color: rgba(255, 255, 255, 0.95);
}

.auth-side-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.auth-side-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 0.75rem;
  color: rgba(255, 255, 255, 0.95);
}

.auth-side-list-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  margin-top: 0.15rem;
}

.auth-side-copy {
  margin: auto 0 0;
  padding-top: 1rem;
  font-size: 0.8rem;
  opacity: 0.65;
  color: rgba(255, 255, 255, 0.9);
}

.auth-side-mobile {
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--auth-primary) 0%, var(--auth-primary-dark) 100%);
  color: #fff;
  padding: 1.25rem 1.25rem 1.5rem;
  text-align: center;
}

.auth-side-mobile-logo {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
}

.auth-side-mobile-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0.75rem 0 0;
  padding: 0 0.5rem;
  opacity: 0.95;
}

@media (min-width: 992px) {
  .auth-side-mobile {
    display: none !important;
  }
}

.auth-main {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--auth-card);
  position: relative;
  box-shadow: -12px 0 40px rgba(15, 23, 42, 0.06);
}

@media (min-width: 992px) {
  .auth-main {
    min-height: 100vh;
    min-height: 100dvh;
  }
}

.auth-main-topbar {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #f1f5f9;
}

@media (min-width: 992px) {
  .auth-main-topbar {
    padding: 1.25rem 1.75rem;
  }
}

.auth-back-home {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--auth-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.auth-back-home:hover {
  color: var(--auth-primary);
}

.auth-lang-inline {
  position: relative;
  z-index: 20;
}

.auth-lang-inline .modern-language-selector {
  z-index: 21;
}

.auth-lang-inline .language-options {
  right: 0;
  left: auto;
}

.auth-main-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem clamp(1rem, 4vw, 3rem) 2rem;
  overflow-y: auto;
  background: linear-gradient(165deg, #f1f5f9 0%, #ffffff 38%, #f8fafc 100%);
}

@media (min-width: 992px) {
  .auth-main-inner {
    padding: 2rem clamp(1.5rem, 5vw, 4rem) 3rem;
  }
}

.auth-form-wrap {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

@media (min-width: 576px) {
  .auth-form-wrap {
    max-width: 520px;
  }
}

@media (min-width: 992px) {
  .auth-form-wrap {
    max-width: 640px;
  }
}

@media (min-width: 1200px) {
  .auth-form-wrap {
    max-width: 680px;
  }
}

.auth-form-wrap-wide {
  max-width: 100%;
}

@media (min-width: 576px) {
  .auth-form-wrap-wide {
    max-width: 540px;
  }
}

@media (min-width: 992px) {
  .auth-form-wrap-wide {
    max-width: 680px;
  }
}

@media (min-width: 1200px) {
  .auth-form-wrap-wide {
    max-width: 720px;
  }
}

.auth-form-panel {
  background: #ffffff;
  border: 1px solid rgba(37, 99, 235, 0.1);
  border-radius: 1.35rem;
  padding: 1.75rem 1.5rem 2rem;
  box-shadow:
    0 4px 6px -1px rgba(15, 23, 42, 0.06),
    0 20px 45px -15px rgba(37, 99, 235, 0.12);
}

@media (min-width: 768px) {
  .auth-form-panel {
    padding: 2.25rem 2.25rem 2.5rem;
  }
}

@media (min-width: 992px) {
  .auth-form-panel {
    padding: 2.75rem 3rem 3rem;
    border-radius: 1.5rem;
  }
}

.auth-form-panel .form-floating.mb-3 {
  margin-bottom: 1.35rem !important;
}

.auth-form-panel .form-check-label {
  font-size: 0.95rem;
}

.auth-heading {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.auth-sub {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  color: var(--auth-muted);
  margin: 0;
  line-height: 1.55;
  max-width: 42em;
}

.auth-muted {
  color: var(--auth-muted);
  font-size: clamp(0.9rem, 1.1vw, 1rem);
}

.auth-link {
  color: var(--auth-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.auth-link:hover {
  color: var(--auth-primary-dark);
  text-decoration: underline;
}

.auth-alert {
  border-radius: 0.75rem;
  border: none;
}

.form-container {
  position: relative;
}

.form-section {
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.form-section.d-none {
  display: none !important;
}

.form-floating > .form-control {
  border-radius: 0.85rem;
  border: 1px solid var(--auth-border);
  min-height: 58px;
  padding-top: 1.15rem;
  padding-bottom: 0.4rem;
  font-size: 1.05rem;
}

.form-floating > .form-control:focus {
  border-color: var(--auth-primary);
  box-shadow: 0 0 0 3px var(--auth-primary-soft);
}

.form-floating > label {
  padding-top: 0.95rem;
  color: var(--auth-muted);
  font-size: 0.95rem;
}

.form-check-input:checked {
  background-color: var(--auth-primary);
  border-color: var(--auth-primary);
}

.form-check-input:focus {
  border-color: var(--auth-primary);
  box-shadow: 0 0 0 3px var(--auth-primary-soft);
}

.auth-btn.btn-primary {
  --bs-btn-bg: var(--auth-primary);
  --bs-btn-border-color: var(--auth-primary);
  --bs-btn-hover-bg: var(--auth-primary-dark);
  --bs-btn-hover-border-color: var(--auth-primary-dark);
  --bs-btn-active-bg: var(--auth-primary-dark);
  --bs-btn-active-border-color: var(--auth-primary-dark);
  border-radius: 0.85rem;
  padding: 0.9rem 1.25rem;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.38);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.auth-btn.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.4);
}

.auth-btn.btn-primary:disabled {
  opacity: 0.65;
  transform: none;
}

#userAgreementContent {
  max-height: 400px;
  overflow-y: auto;
  padding: 1.25rem;
  background-color: #f8fafc;
  border-radius: 0.75rem;
  border: 1px solid var(--auth-border);
}

#userAgreementContent h4 {
  color: #0f172a;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

#userAgreementContent h5 {
  color: #334155;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

#userAgreementContent p,
#userAgreementContent ul {
  color: #475569;
  line-height: 1.6;
  font-size: 0.9rem;
}

#userAgreementContent ul {
  padding-left: 1.25rem;
}

#userAgreementContent li {
  margin-bottom: 0.35rem;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}