body {
  /* same image as the side container */
  background: linear-gradient(rgba(0, 0, 0, 0.819), rgba(0, 0, 0, 0.844)),
    /* dark overlay */ url("img/login1.jpg") center/cover no-repeat;
  min-height: 100vh;
  opacity: 0;
  animation: fadeIn 0.3s ease-in-out forwards;
  color: #fff;
}

.card,
.auth-image-container {
  opacity: 0;
  animation: fadeIn 0.8s ease-in-out forwards;
}

.auth-image-container {
  animation-delay: 0.15s;
}
.auth-image-container {
  width: 100%;
  height: auto;
  min-height: 400px;
  transition: height 0.35s ease, transform 0.35s ease, filter 0.35s ease;
  background-image: url("img/login1.jpg");
  background-size: cover;
  background-position: center;
  border-top-right-radius: 0.5rem;
  overflow: hidden;
}

#authTabsContent {
  transition: height 0.35s ease;
  overflow: hidden;
}

.no-transition {
  transition: none !important;
}

/* New visual states for interactions (login vs signup) */
.auth-image-container.login-active {
  transform: scale(1);
  filter: none;
}

.auth-image-container.signup-active {
  transform: scale(1.03);
  filter: brightness(0.92) saturate(1.05);
}

/* Define fade-in keyframes */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#authTabsContent {
  transition: height 0.35s ease;
  overflow: hidden;
}

.nav-tabs {
  border: none !important;
  background-color: #212529;
  border-top-left-radius: 0.5rem;
}

.nav-tabs .nav-link {
  border: none !important;
  border-radius: 0 !important;
  background-color: #212529;
  color: rgb(255, 255, 255) !important;
  position: relative;
  transform: translateY(0);
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transition: transform 0.25s ease, background-color 0.35s ease,
    color 0.35s ease;
  z-index: 1;
}

/* keep rounded left corner for first tab */
.nav-tabs .nav-item:first-child .nav-link {
  border-top-left-radius: 0.4rem !important;
}

/* hover uses transform (no layout shift) and raises z-index so it doesn't get overlapped */
.nav-tabs .nav-link:hover {
  transform: translateY(-4px);
  background-color: #2d3338;
  transition: transform 0.25s ease, background-color 0.35s ease;
  z-index: 3;
}

/* active tab stays flush (no translate), sits above others */
.nav-tabs .nav-link.active {
  background-color: white !important;
  color: black !important;
  transform: translateY(0);
  border: none !important;
  z-index: 4;
  position: relative;
}

/* White indicator line for active auth tab */
.nav-tabs .nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -1px;
  width: 60%;
  height: 4px;
  background: rgb(227, 222, 222);
  border-radius: 3px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card {
  height: fit-content;
  background-color: white !important;
  border: none;
  border-top-left-radius: 0.9rem;
  border-bottom-left-radius: 0.5rem;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.auth-image-container {
  width: 100%;
  height: auto;
  min-height: 400px;
  transition: height 0.35s ease;
  background-image: url("img/login1.jpg");
  background-size: cover;
  background-position: center;
  border-top-right-radius: 0.5rem;
  overflow: hidden;
}

/* GHOST BUTTON (expands from center) */
.btn-ghost {
  position: relative;
  display: inline-block;
  border: 2px solid #212529;
  color: #212529 !important;
  background: transparent;
  font-weight: 600;
  letter-spacing: 0.5px;
  overflow: hidden;
  transition: color 0.4s ease, box-shadow 0.3s ease;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  z-index: 1;
}

.btn-ghost::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 0%;
  height: 100%;
  background: #212529;
  transform: translateX(-50%);
  transition: all 0.4s ease;
  z-index: -1;
}

.btn-ghost:hover::before {
  width: 100%;
}

.btn-ghost:hover {
  color: white !important;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);
}
.text-center a {
  color: rgb(53, 100, 210);
  font-weight: 500;
  transition: color 0.3s ease;
}

.text-center a:hover {
  color: #15426e;
  text-decoration: underline;
}
.btn-link {
  color: #212529 !important;
  font-weight: 400;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.3s ease;
}

.btn-link i,
.btn-link span {
  transition: transform 0.3s ease;
}

.btn-link:hover i {
  transform: translateX(-5px);
}

.btn-link:hover span {
  transform: translateX(4px);
}

.form-check-input:checked {
  background-color: black;
  border-color: black;
}

.form-check-input:focus {
  border-color: black;
}