/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600&display=swap');
:root {
  --brand-primary: #689F99;
  --brand-primary-dark: #4f7f7a;
  --brand-tint: rgba(104, 159, 153, 0.25);
  --brand-card: rgba(255, 255, 255, 0.35);
  --brand-border: rgba(255, 255, 255, 0.45);
  --brand-light: #ffffff;
  --brand-shadow: rgba(104, 159, 153, 0.35);
  --brand-shadow-strong: rgba(79, 127, 122, 0.4);
}

* {
  font-family: 'Montserrat', sans-serif;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.gradient-bg {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(150deg, rgba(104, 159, 153, 0.75), rgba(104, 159, 153, 0.55), rgba(255, 255, 255, 0.85));
  overflow: hidden;
}

.gradient-bg::before,
.gradient-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.65;
  pointer-events: none;
}

.gradient-bg::before {
  width: 420px;
  height: 420px;
  top: -160px;
  right: -120px;
  background: rgba(255, 255, 255, 0.55);
}

.gradient-bg::after {
  width: 380px;
  height: 380px;
  bottom: -140px;
  left: -110px;
  background: rgba(104, 159, 153, 0.55);
}

.container-glass {
  position: relative;
  width: 900px;
  max-width: 95%;
  min-height: 520px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: 0 30px 80px rgba(35, 87, 83, 0.35);
  backdrop-filter: blur(18px);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  transition: all 0.6s ease-in-out;
}

/* Form container */
.form-container {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 40px;
  transition: all 0.6s ease-in-out;
}

/* Form initial positions */
.sign-in { left: 0; z-index: 2; }
.sign-up { left: 50%; opacity: 0; z-index: 1; transform: translateX(-100%); }

/* Toggle active */
.container-glass.active .sign-in {
  transform: translateX(-100%);
  opacity: 0;
  z-index: 1;
}
.container-glass.active .sign-up {
  transform: translateX(0);
  opacity: 1;
  z-index: 5;
}

/* Input fields */
input.form-control {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(104, 159, 153, 0.22);
  border-radius: 14px;
  padding: 12px;
  margin-bottom: 12px;
  color: #2c5b57;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
input.form-control:focus {
  box-shadow: 0 0 12px rgba(104, 159, 153, 0.38);
  border-color: rgba(104, 159, 153, 0.7);
  outline: none;
}
.invalid-feedback {
  color: var(--brand-light);
  text-align: left;
}

/* Buttons */
button.btn {
  border-radius: 14px;
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
button.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(104, 159, 153, 0.32);
}
button.btn-light {
  background: rgba(255, 255, 255, 0.9);
  color: var(--brand-primary-dark);
  border: 1px solid rgba(255, 255, 255, 0.6);
}
button.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: var(--brand-light);
}

/* Toggle Panel */
.toggle-container {
  position: absolute;
  top: 0;
  left: 50%;
  width: 50%;
  height: 100%;
  overflow: hidden;
  z-index: 1000;
  transition: all 0.6s ease-in-out;
}
.container-glass.active .toggle-container {
  transform: translateX(-100%);
}

.toggle {
  width: 200%;
  display: flex;
  height: 100%;
  background: linear-gradient(140deg, rgba(104, 159, 153, 0.6), rgba(104, 159, 153, 0.3));
  backdrop-filter: blur(10px);
  transition: all 0.6s ease-in-out;
  position: relative;
  left: -100%;
}
.container-glass.active .toggle {
  transform: translateX(50%);
}

.toggle-panel {
  width: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 30px;
  color: var(--brand-light);
}

.toggle-panel h2 {
  font-size: 1.9rem;
  letter-spacing: 0.06em;
}

.mobile-shell,
.mobile-tabs,
.mobile-copy {
  display: none;
}

.mobile-brand .mobile-logo {
  letter-spacing: 0.4em;
  font-size: 0.78rem;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--brand-primary-dark);
}

.mobile-tabs {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mobile-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 14px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.15);
  color: var(--brand-light);
  font-weight: 600;
  transition: all 0.3s ease;
}

.mobile-tab i {
  font-size: 1.1rem;
}

.mobile-tab.active {
  background: rgba(255, 255, 255, 0.4);
  color: var(--brand-primary-dark);
  border-color: transparent;
  box-shadow: 0 18px 32px rgba(79, 127, 122, 0.32);
}

.mobile-tab:not(.active):hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(79, 127, 122, 0.22);
}

/* Responsif */
@media (max-width: 768px) {
  .gradient-bg {
    padding: 48px 0 60px;
    align-items: center !important;
    justify-content: center;
  }

  .toast-wrapper {
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: min(100%, calc(100vw - 32px));
    max-width: 420px;
    gap: 10px;
    justify-content: center;
    align-items: center;
  }

  .sinio-toast {
    font-size: 0.95rem;
    border-radius: 16px;
    padding: 12px 16px;
  }

  .container-glass {
    width: 92%;
    max-width: 420px;
    min-height: unset;
    padding: 28px 22px 36px;
    border-radius: 28px;
    flex-direction: column;
    gap: 20px;
  }

  .mobile-shell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    color: var(--brand-light);
  }

  .mobile-tabs {
    display: grid;
  }

  .form-stack {
    position: relative;
    width: 100%;
    min-height: 420px;
  }

  .form-container {
    position: absolute;
    inset: 0;
    width: 100%;
    height: auto;
    padding: 26px 20px 30px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.42);
    box-shadow: 0 24px 48px rgba(79, 127, 122, 0.25);
    transform: translateY(28px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.45s ease, opacity 0.45s ease, box-shadow 0.45s ease;
  }

  .mobile-copy {
    display: block;
  }

  .form-container form {
    background: transparent;
    padding: 0;
    color: var(--brand-primary-dark);
    box-shadow: none;
  }

  .form-container form h2,
  .form-container form p {
    color: var(--brand-primary-dark);
  }

  input.form-control {
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(104, 159, 153, 0.24);
  }

  .toggle-container {
    display: none;
  }

  .container-glass .form-container.sign-in {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
  }

  .container-glass .form-container.sign-up {
    transform: translateY(34px);
    opacity: 0;
    pointer-events: none;
    z-index: 1;
  }

  .container-glass.active .form-container.sign-in {
    transform: translateY(-34px);
    opacity: 0;
    pointer-events: none;
    z-index: 1;
  }

  .container-glass.active .form-container.sign-up {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
  }
}
.mobile-copy h3 {
  font-size: 1.4rem;
  letter-spacing: 0.03em;
  color: var(--brand-primary-dark);
}

.mobile-copy p {
  color: rgba(79, 127, 122, 0.8);
  font-size: 0.95rem;
}
.toast-wrapper {
  position: fixed;
  top: 26px;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(260px, 60vw, 520px);
  max-width: calc(100vw - 48px);
  padding-inline: 0;
  right: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
  align-items: center;
  z-index: 3000;
  transition: opacity 0.45s ease-out, transform 0.45s ease-out;
}

.sinio-toast {
  padding: 14px 18px;
  border-radius: 18px;
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 40px rgba(59, 110, 105, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: var(--brand-primary-dark);
  font-weight: 600;
  letter-spacing: 0.02em;
  animation: toastSlide 0.45s ease forwards;
  text-align: center;
  width: 100%;
}

.sinio-toast::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 10px;
  border-radius: 50%;
  background: currentColor;
}

.sinio-toast-success {
  background: rgba(255, 255, 255, 0.85);
  color: var(--brand-primary-dark);
}

.sinio-toast-danger {
  background: rgba(241, 194, 201, 0.85);
  color: #75404a;
}

.sinio-toast-warning {
  background: rgba(255, 247, 210, 0.9);
  color: #7a5b2b;
}

.toast-wrapper.toast-hide {
  opacity: 0;
  transform: translateX(1px);
}

.sinio-toast.toast-hide {
  opacity: 0;
}

.sinio-toast.toast-hide {
    opacity: 0;
    transition: opacity 0.4s ease-out, transform 0.4s ease-out; 
}

@keyframes toastSlide {
  from {
    opacity: 0;
    transform: translate(-14px);
  }
  to {
    opacity: 1;
    transform: translate(0);
  }
}

.logo-gambar {
  width: 120px; 
  height: auto;
}

.mobile-logo {
  width: 60px;
  height: auto;
  margin-bottom: 16px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.mobile-copy {
  display: block;
  text-align: center;
  margin-bottom: 20px;
}