/* =========================
   THEME VARIABLES
========================= */
:root {
  --bg-color: #ffffff;
  --text-color: #212529;
  --card-bg: #ffffff;
  --border-color: #dee2e6;
  --input-bg: #ffffff;
  --input-border: #ced4da;
  --btn-hover-bg: #f8f9fa;
  --navbar-bg: linear-gradient(
    90deg,
    #2020a0 0%,
    #2020a0 45%,
    #2020a0 55%,
    #f7ae22 100%
  );
  --link-color: #0d6efd;
  --link-hover-color: #0b5ed7;
  --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --card-bg: #1e1e1e;
  --border-color: #404040;
  --input-bg: #2a2a2a;
  --input-border: #404040;
  --btn-hover-bg: #2a2a2a;
  --navbar-bg: #1f3d2b;
  --link-color: #64b5f6;
  --link-hover-color: #90caf9;
  --shadow-color: rgba(0, 0, 0, 0.5);
}

/* =========================
   GLOBAL
========================= */
body {
  padding-top: 80px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.card,
.dropdown-menu,
.sidebar .accordion-button,
.highlight-line {
  background-color: var(--card-bg);
  color: var(--text-color);
}

/* Form Controls */
.form-control,
.form-select,
.form-check-input,
textarea {
  background-color: var(--input-bg);
  color: var(--text-color);
  border-color: var(--input-border);
}

.form-control:focus,
.form-select:focus,
textarea:focus {
  background-color: var(--input-bg);
  color: var(--text-color);
  border-color: var(--link-color);
  box-shadow: 0 0 0 0.25rem rgba(100, 181, 246, 0.25);
}

.form-control::placeholder,
textarea::placeholder {
  color: var(--text-color);
  opacity: 0.6;
}

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

/* Buttons */
.btn {
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--link-color);
  border-color: var(--link-color);
}

.btn-primary:hover {
  background-color: var(--link-hover-color);
  border-color: var(--link-hover-color);
}

.btn-dark,
.btn-outline-dark {
  color: var(--text-color);
  border-color: var(--border-color);
}

body.dark-mode .btn-outline-dark {
  color: var(--text-color);
}

body.dark-mode .btn-outline-dark:hover {
  background-color: var(--btn-hover-bg);
  color: var(--text-color);
}

/* Links */
a {
  color: var(--link-color);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--link-hover-color);
}

.text-muted {
  color: rgba(224, 224, 224, 0.7) !important;
}

body.light-mode .text-muted {
  color: #6c757d !important;
}

/* Borders */
.border,
.border-top,
.border-bottom,
.border-start,
.border-end {
  border-color: var(--border-color);
}

.hr {
  border-color: var(--border-color);
}

/* Tables */
.table {
  color: var(--text-color);
  border-color: var(--border-color);
}

.table-light {
  background-color: var(--card-bg);
  color: var(--text-color);
}

.table thead th {
  background-color: var(--btn-hover-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}

.table tbody td {
  border-color: var(--border-color);
}

/* Alerts */
.alert {
  border-color: var(--border-color);
}

.alert-light {
  background-color: var(--card-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}

/* Badges and Pills */
.badge {
  background-color: var(--link-color);
}

/* Modals */
.modal-content {
  background-color: var(--card-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}

/* =========================
   TOP BAR
========================= */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1050;
  transition: transform 0.3s ease;
  background-color: #212529;
  color: #fff;
}

body.scrolled .top-bar {
  transform: translateY(-100%);
}

/* =========================
   NAVBAR
========================= */
.navbar.fixed-top {
  top: 32px;
  transition: all 0.3s ease;
}

body.scrolled .navbar.fixed-top {
  top: 0;
  padding-top: 0.3rem;
  padding-bottom: 0.3rem;
}

.navbar-custom {
  background: var(--navbar-bg);
}

.navbar-dark .navbar-nav .nav-link {
  color: #ffffff;
  font-weight: 500;
}

.navbar-dark .navbar-nav .nav-link:hover {
  color: #ffeb3b;
}

/* Logo */
.navbar .logo {
  height: 80px;
  transition: height 0.3s ease;
}

body.scrolled .navbar .logo {
  height: 56px;
}

/* Remove caret */
.navbar .dropdown-toggle::after {
  display: none;
}

/* Dropdown icon */
.dropdown-icon {
  font-size: 0.8rem;
  transition: transform 0.2s ease;
}

.show > .nav-link .dropdown-icon {
  transform: rotate(180deg);
}

/* Dropdown items */
.dropdown-item {
  font-size: 13px;
  color: var(--text-color);
}

.dropdown-menu .dropdown-item:hover,
.dropdown-menu .dropdown-item:focus,
.dropdown-menu .dropdown-item.active,
.dropdown-menu .dropdown-item:active {
  background: #295b3e;
  color: #fff;
}

/* Hover dropdown (PC) */
@media (min-width: 992px) {
  .navbar .dropdown:hover .dropdown-menu {
    display: block;
    margin-top: 0;
  }

  .dropdown-menu {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.2s ease;
    display: block;
    visibility: hidden;
  }

  .dropdown:hover .dropdown-menu {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }
}

/* =========================
   TOGGLER ICON
========================= */
.navbar-toggler {
  border: none;
  outline: none;
}

.toggler-icon {
  width: 28px;
  height: 2px;
  background-color: #fff;
  display: block;
  position: relative;
  transition: all 0.3s ease;
}

.toggler-icon::before,
.toggler-icon::after {
  content: '';
  position: absolute;
  width: 28px;
  height: 2px;
  background-color: #fff;
  transition: all 0.3s ease;
}

.toggler-icon::before { top: -8px; }
.toggler-icon::after  { top: 8px; }

.navbar-toggler[aria-expanded="true"] .toggler-icon {
  background-color: transparent;
}

.navbar-toggler[aria-expanded="true"] .toggler-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.navbar-toggler[aria-expanded="true"] .toggler-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

/* =========================
   SIDEBAR
========================= */
.sidebar .accordion-item {
  border: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.sidebar .accordion-button {
  font-weight: 500;
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.sidebar .accordion-button::after {
  display: none;
}

/* =========================
   HOME / HERO
========================= */
.home {
  background: var(--navbar-bg);
  color: var(--text-color);
}

.hero-carousel .carousel-item {
  aspect-ratio: 16 / 7;
}

@media (max-width: 768px) {
  .navbar-custom {
    background: #295b3e;
  }

  .hero-carousel .carousel-item {
    aspect-ratio: 4 / 5;
  }
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.6),
    rgba(0, 0, 0, 0.2)
  );
}

.carousel-caption {
  bottom: 25%;
}

.carousel-caption h1 {
  font-size: clamp(1.5rem, 4vw, 3rem);
}

/* =========================
   ICON BOX
========================= */
.icon-box {
  border-radius: 15px;
  transition: 0.3s;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
}

.icon-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px var(--shadow-color);
}

.team-member {
    transition: transform 0.3s ease-in-out;
    background-color: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
}

.team-member:hover {
    transform: translateY(-10px);
}

.team-member img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid #f8f9fa;
    transition: transform 0.3s ease;
}

.team-member:hover img {
    transform: scale(1.05);
}

.section-title::after {
    content: "";
    display: block;
    width: 50px;
    height: 3px;
    background-color: #0d6efd;
    margin: 20px auto;
}

.profile-sidebar {
    background: linear-gradient(135deg, #4158D0 0%, #C850C0 100%);
}

.nav-pills .nav-link {
    color: var(--text-color);
    border-radius: 10px;
    padding: 12px 20px;
    margin: 4px 0;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.nav-pills .nav-link:hover {
    background-color: var(--btn-hover-bg);
    opacity: 1;
}

.nav-pills .nav-link.active {
    background-color: var(--link-color);
    color: #fff;
    box-shadow: 0 4px 15px var(--shadow-color);
    opacity: 1;
}

.profile-header {
    background: linear-gradient(135deg, #4158D0 0%, #C850C0 100%);
    height: 150px;
    border-radius: 15px;
}

.profile-pic {
    width: 120px;
    height: 120px;
    border: 4px solid #fff;
    margin-top: -60px;
    background-color: #fff;
}

.settings-card {
    border-radius: 15px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: all 0.3s ease;
}

.settings-card:hover {
    box-shadow: 0 8px 25px var(--shadow-color);
}

.form-switch .form-check-input {
    width: 3em;
    height: 1.5em;
    margin-left: -3.5em;
    background-color: var(--input-bg);
    border-color: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.form-check-label {
    cursor: pointer;
    color: var(--text-color);
}

/* Enhanced Theme Switch Button */
.form-switch .form-check-input {
    width: 3em;
    height: 1.5em;
    margin-left: -3.5em;
    background-color: var(--input-bg);
    border-color: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    box-shadow: inset 0 2px 4px var(--shadow-color);
}

.form-switch .form-check-input::before {
    content: '🌙';
    position: absolute;
    left: 4px;
    top: 2px;
    font-size: 0.75rem;
}

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

.form-switch .form-check-input:checked::before {
    content: '☀️';
}

.form-check-label {
    cursor: pointer;
    color: var(--text-color);
    user-select: none;
    border-left: 2px solid var(--border-color);
    padding-left: 20px;
    position: relative;
}

.activity-item::before {
    content: '';
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--link-color);
    position: absolute;
    left: -7px;
    top: 5px;
}

.quiz-container {
      max-width: 720px;
      margin: 40px auto;
    }
    .question {
      margin-bottom: 2.2rem;
    }
    .question h5 {
      margin-bottom: 1rem;
      font-weight: 600;
    }

/* =========================
   FOOTER
========================= */
.footer {
  font-size: 20px;
}

.footer-icon,
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background 0.2s ease;
}

.social-icon:hover {
  background: rgba(255,255,255,0.3);
}

.footer-divider {
  border-color: rgba(255,255,255,0.2);
}

/* =========================
   ADDITIONAL DARK MODE STYLES
========================= */

/* Text utility classes */
body.dark-mode .text-white {
  color: var(--text-color);
}

body.dark-mode .text-dark {
  color: var(--text-color);
}

body.dark-mode .bg-light {
  background-color: var(--card-bg) !important;
}

body.dark-mode .bg-white {
  background-color: var(--card-bg) !important;
}

/* Pagination */
.pagination .page-link {
  background-color: var(--card-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

.pagination .page-link:hover {
  background-color: var(--btn-hover-bg);
  color: var(--text-color);
}

.pagination .page-item.active .page-link {
  background-color: var(--link-color);
  border-color: var(--link-color);
}

/* Tooltips and Popovers */
.tooltip-inner {
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.popover {
  background-color: var(--card-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

.popover-header {
  background-color: var(--btn-hover-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

/* Progress bars */
.progress {
  background-color: var(--btn-hover-bg);
}

/* Dropdowns */
.dropdown-menu {
  background-color: var(--card-bg);
  border-color: var(--border-color);
}

.dropdown-item {
  color: var(--text-color);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--link-color);
  color: #fff;
}

.dropdown-item.active,
.dropdown-item:active {
  background-color: var(--link-color);
}

/* Breadcrumbs */
.breadcrumb {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
}

.breadcrumb-item.active {
  color: var(--text-color);
}

/* List groups */
.list-group-item {
  background-color: var(--card-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

.list-group-item:hover {
  background-color: var(--btn-hover-bg);
}

.list-group-item.active {
  background-color: var(--link-color);
  border-color: var(--link-color);
}

/* Cards within dark mode */
body.dark-mode .card-header {
  background-color: var(--btn-hover-bg);
  border-color: var(--border-color);
}

body.dark-mode .card-footer {
  background-color: var(--btn-hover-bg);
  border-color: var(--border-color);
}

/* Code blocks */
code,
pre {
  background-color: var(--btn-hover-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

/* Blockquote */
blockquote {
  border-left-color: var(--link-color);
  color: var(--text-color);
}

/* Time elements */
time {
  color: var(--text-color);
}

/* HR element */
hr {
  border-color: var(--border-color);
  opacity: 1;
}