/* ==========================================================================
   UITS Course Mastery - Modern Minimalist Style System (Pure Black & White)
   ========================================================================== */

/* --- CSS Variables & Design Tokens (Dark Theme is Default) --- */
:root {
  --bg-primary: #000000;
  --bg-secondary: #0d0d0d;
  --bg-tertiary: #141414;
  --card-bg: #000000;
  --border-color: #262626;
  --border-hover: #525252;

  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #525252;

  --accent: #ffffff;
  --accent-inverse: #000000;

  --btn-primary-bg: #ffffff;
  --btn-primary-text: #000000;
  --btn-secondary-bg: #000000;
  --btn-secondary-text: #ffffff;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --transition-speed: 0.25s;
  --container-max-width: 1100px;
  --hero-shadow: 0 0 50px rgba(255, 255, 255, 0.12), 0 20px 40px rgba(255, 255, 255, 0.06), 0 0 100px rgba(255, 255, 255, 0.04);
}

/* --- Light Theme Variables --- */
body.light-theme {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e5e5e5;
  --card-bg: #ffffff;
  --border-color: #e5e5e5;
  --border-hover: #737373;

  --text-primary: #000000;
  --text-secondary: #525252;
  --text-muted: #a3a3a3;

  --accent: #000000;
  --accent-inverse: #ffffff;

  --btn-primary-bg: #000000;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: #ffffff;
  --btn-secondary-text: #000000;
  --hero-shadow: 0 25px 70px rgba(0, 0, 0, 0.12), 0 10px 30px rgba(0, 0, 0, 0.08), 0 0 80px rgba(0, 0, 0, 0.06);
}

/* ==========================================================================
   Reset & Core Styles
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  height: 100%;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ==========================================================================
   Typography & Helpers
   ========================================================================== */
.accent-text {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 6px;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem auto;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 4px 12px;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.section-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 4rem 0;
  width: 100%;
}

.fade-in {
  animation: fadeIn 0.4s ease-out forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.logo-accent {
  font-weight: 900;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-speed) ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  font-weight: 700;
  border-color: var(--text-primary);
}

/* Theme Toggle Switch */
.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.theme-toggle-btn:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-secondary);
}

.theme-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.sun-icon {
  display: none;
}

body.light-theme .sun-icon {
  display: block;
}

body.light-theme .moon-icon {
  display: none;
}

/* Mobile Toggle Hamburger */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
}

.mobile-menu-toggle .bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease;
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-content {
  flex: 1;
  max-width: var(--container-max-width);
  width: 100%;
  margin: 0 auto;
  padding: 3rem 1.5rem 8rem 1.5rem;
}

/* ==========================================================================
   1. Home Section
   ========================================================================== */
.hero-wrapper {
  padding: 5rem 2rem;
  border: 1px solid var(--border-color);
  text-align: center;
  background-color: var(--bg-secondary);
  border-radius: 6px;
  box-shadow: var(--hero-shadow);
  transition: box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero-motto {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 650px;
  margin: 0 auto 2.5rem auto;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition-speed) ease;
}

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

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

.btn-secondary {
  background-color: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--accent);
  color: var(--accent-inverse);
  border-color: var(--accent);
}

.btn-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2.5;
}

/* Roadmap Container & Bounce Animation */
.roadmap-container {
  will-change: transform;
}

.roadmap-container.bounce-active {
  animation: singleRoadmapBounce 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

@keyframes singleRoadmapBounce {
  0% {
    transform: translateY(0);
  }

  45% {
    transform: translateY(-12px);
  }

  100% {
    transform: translateY(0);
  }
}

/* Roadmap Grid */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  position: relative;
}

.roadmap-block {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  padding: 1.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
}

.roadmap-block:hover,
.roadmap-block:focus {
  border-color: var(--border-hover);
  background-color: var(--bg-secondary);
  transform: translateY(-4px);
}

.roadmap-step-num {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.roadmap-block:hover .roadmap-step-num {
  color: var(--text-primary);
}

.roadmap-step-subtitle {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 0.25rem;
}

.roadmap-step-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.roadmap-step-summary {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.roadmap-step-arrow {
  margin-top: 1rem;
  align-self: flex-end;
  color: var(--text-muted);
  transition: transform var(--transition-speed) ease, color var(--transition-speed) ease;
}

.roadmap-block:hover .roadmap-step-arrow {
  transform: translateX(4px);
  color: var(--text-primary);
}

.roadmap-step-arrow svg {
  width: 16px;
  height: 16px;
}

/* ==========================================================================
   2. Discussions Page
   ========================================================================== */
.discussions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.discussion-card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  padding: 1.75rem;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-speed) ease;
}

.discussion-card:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-secondary);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: 1rem;
}

.semester-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 20px;
}

.discussion-card:hover .semester-tag {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.course-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.instructor-name {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.75rem;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.card-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  transition: all var(--transition-speed) ease;
}

.card-btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.card-btn svg {
  width: 14px;
  height: 14px;
}

/* ==========================================================================
   3. Resources Page
   ========================================================================== */
.resources-container {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.resource-category-section {
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 4px;
  background-color: var(--bg-secondary);
}

.category-heading {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.category-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  max-width: 800px;
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.resource-card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  padding: 1.5rem;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-speed) ease;
}

.resource-card:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-secondary);
}

.resource-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.resource-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.resource-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: auto;
  border-bottom: 1px dashed var(--border-color);
  align-self: flex-start;
  padding-bottom: 2px;
}

.resource-link:hover {
  border-color: var(--text-primary);
}

.resource-link svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-speed) ease;
}

.resource-link:hover svg {
  transform: translate(2px, -2px);
}

/* ==========================================================================
   4. About Us Page
   ========================================================================== */
.about-content {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 2.5rem;
  align-items: start;
}

.about-vision-block {
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: 4px;
}

.about-main-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.community-link {
  width: 100%;
  justify-content: center;
}

.about-points-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.about-point-card {
  border: 1px solid var(--border-color);
  padding: 1.75rem;
  border-radius: 4px;
  background-color: var(--bg-primary);
}

.point-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.point-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ==========================================================================
   5. Join Us Page
   ========================================================================== */
.join-container {
  display: grid;
  grid-template-columns: 1.7fr 1.3fr;
  gap: 2.5rem;
}

.join-steps-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.join-step-card {
  display: flex;
  gap: 1.25rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  padding: 1.75rem;
  border-radius: 4px;
}

.join-step-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-muted);
}

.join-step-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.join-step-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.join-channels-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.channel-card {
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 4px;
  background-color: var(--bg-secondary);
  display: flex;
  flex-direction: column;
}

.channel-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.channel-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 4px;
  transition: all var(--transition-speed) ease;
  border: 1px solid var(--text-primary);
}

.btn-fb {
  background-color: var(--text-primary);
  color: var(--accent-inverse);
}

.btn-fb:hover {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.btn-wa {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.btn-wa:hover {
  background-color: var(--text-primary);
  color: var(--accent-inverse);
}

.btn-discord {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.btn-discord:hover {
  background-color: var(--text-primary);
  color: var(--accent-inverse);
}

.privacy-disclaimer {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  border-radius: 4px;
  margin-top: 1.5rem;
  align-items: flex-start;
  width: 100%;
}

.privacy-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke: var(--text-primary);
}

.privacy-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.privacy-text strong {
  color: var(--text-primary);
}

/* ==========================================================================
   Global Footer
   ========================================================================== */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  padding: 0.75rem 1.5rem;
  transition: border-color var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-container a {
  color: var(--text-primary);
  font-weight: 600;
}

.footer-container a:hover {
  text-decoration: underline;
}

.footer-links {
  margin-top: 0.25rem;
}

/* ==========================================================================
   Overlay Modal window
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 1.5rem;
}

body.light-theme .modal-overlay {
  background-color: rgba(255, 255, 255, 0.8);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-wrapper {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  max-width: 550px;
  width: 100%;
  max-width: calc(100vw - 3rem);
  border-radius: 4px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  transform: translateY(20px);
  transition: transform 0.25s ease;
  overflow: hidden;
  box-sizing: border-box;
}

body.light-theme .modal-wrapper {
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.modal-overlay.open .modal-wrapper {
  transform: translateY(0);
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 20px;
}

.modal-close-btn {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-secondary);
  transition: color var(--transition-speed) ease;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 2rem 1.5rem;
  overflow: hidden;
  box-sizing: border-box;
  width: 100%;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.modal-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.modal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.modal-link {
  font-size: 0.85rem;
  padding: 0.6rem 1.2rem;
}

/* Card Links (for About Features & Join Instructions) */
.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 1px;
}

.card-link:hover {
  border-color: var(--text-primary);
}

/* Course & Root Accordion Dropdown Styles */
.root-discussions-container {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  max-width: 950px;
  margin: 0 auto;
}

.root-accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  overflow: visible;
  transition: border-color var(--transition-speed) ease;
  position: relative;
  z-index: 1;
}

.root-accordion-item:hover {
  border-color: var(--border-hover);
}

.root-accordion-header {
  width: 100%;
  padding: 1.5rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  background: var(--bg-secondary);
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  cursor: pointer;
  border: none;
  color: var(--text-primary);
  position: relative;
  z-index: 2;
  overflow: visible !important;
}

.root-title-text {
  flex: 1;
}

.root-count,
.lectures-count {
  position: absolute;
  top: 1rem;
  right: 0.5rem;
  transform: translateY(-50%);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 4px 8px;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  z-index: 50;
}

.root-accordion-header[aria-expanded="true"] .accordion-arrow {
  transform: rotate(180deg);
}

.root-accordion-content {
  max-height: 0;
  overflow: clip;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0;
  border-bottom-left-radius: 4px;
  border-bottom-right-radius: 4px;
  position: relative;
  z-index: 3;
}

.root-accordion-header[aria-expanded="true"]+.root-accordion-content {
  border-top: 1px solid var(--border-color);
  padding: 1.5rem;
  overflow: visible !important;
}

.topics-accordion,
.courses-accordion {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 100%;
  margin: 0;
  position: relative;
  z-index: 4;
}

.topic-accordion-item,
.course-accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-secondary);
  overflow: visible !important;
  transition: border-color var(--transition-speed) ease;
  position: relative;
  z-index: 5;
}

.topic-accordion-item:hover,
.course-accordion-item:hover {
  border-color: var(--border-hover);
}

.topic-accordion-header,
.course-accordion-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  background: none;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  color: var(--text-primary);
  position: relative;
  z-index: 6;
  overflow: visible !important;
}

.topic-title-text {
  flex: 1;
  text-align: center;
}

.course-title-text {
  flex: 1;
}

.accordion-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-speed) ease;
}

.topic-accordion-header[aria-expanded="true"] .accordion-arrow,
.course-accordion-header[aria-expanded="true"] .accordion-arrow {
  transform: rotate(180deg);
}

.topic-accordion-content,
.course-accordion-content {
  max-height: 0;
  overflow: clip;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-top: 0px solid transparent;
  position: relative;
  z-index: 7;
}

.topic-accordion-header[aria-expanded="true"]+.topic-accordion-content,
.course-accordion-header[aria-expanded="true"]+.course-accordion-content {
  border-top: 1px solid var(--border-color);
  overflow: visible !important;
}

.lectures-grid {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.discussion-accordion-item {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  border-radius: 4px;
  overflow: visible !important;
  transition: border-color var(--transition-speed) ease;
}

.discussion-accordion-item:hover {
  border-color: var(--border-hover);
}

.discussion-accordion-header-wrapper {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  position: relative;
}

.discussion-accordion-header {
  flex: 1;
  background: none;
  border: none;
  padding: 0 2.5rem 0 0;
  text-align: left;
  cursor: pointer;
  color: var(--text-primary);
  position: relative;
  font-family: inherit;
}

.discussion-header-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}

.id-tag {
  font-size: 0.75rem;
  font-weight: 700;
  font-family: monospace;
  padding: 2px 8px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 4px;
}

.discussion-accordion-header .lecture-title {
  margin-bottom: 0.35rem;
}

.discussion-accordion-header .lecture-instructor {
  margin-bottom: 0;
}

.discussion-accordion-header .accordion-arrow {
  position: absolute;
  top: 0.2rem;
  right: 0.5rem;
  width: 18px;
  height: 18px;
  transition: transform var(--transition-speed) ease;
}

.discussion-accordion-header[aria-expanded="true"] .accordion-arrow {
  transform: rotate(180deg);
}

.discussion-accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-top: 0px solid transparent;
}

.discussion-accordion-item.expanded .discussion-accordion-content,
.discussion-accordion-header[aria-expanded="true"]+.discussion-accordion-content,
.discussion-accordion-header[aria-expanded="true"]~.discussion-accordion-content {
  border-top: 1px solid var(--border-color);
  overflow: visible !important;
}

.discussion-card-body {
  padding: 1.25rem 1.5rem;
  background-color: var(--bg-secondary);
  border-bottom-left-radius: 4px;
  border-bottom-right-radius: 4px;
}

/* Card Nested Description Dropdown Styles */
.card-desc-wrapper {
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  overflow: hidden;
}

.card-desc-toggle {
  width: 100%;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.card-desc-toggle:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.card-desc-toggle .accordion-arrow {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-speed) ease;
}

.card-desc-toggle[aria-expanded="true"] .accordion-arrow {
  transform: rotate(180deg);
}

.card-desc-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-top: 0px solid transparent;
}

.card-desc-toggle[aria-expanded="true"]+.card-desc-content {
  border-top: 1px solid var(--border-color);
  padding: 0.85rem 1rem;
  background-color: var(--bg-primary);
}

.card-desc-text {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

.lecture-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.lecture-instructor {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}


/* Related Redirect Links in Resource Cards */
.related-link {
  color: var(--text-secondary);
}

.related-link:hover {
  color: var(--text-primary);
}

/* Highlight Flash Animation for Redirect Target */
.highlight-flash {
  animation: flash-highlight-animation 2s ease-out;
}

@keyframes flash-highlight-animation {
  0% {
    border-color: var(--text-primary);
    background-color: var(--border-color);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.25);
  }

  100% {
    border-color: var(--border-color);
    background-color: var(--bg-primary);
    box-shadow: none;
  }
}

/* ==========================================================================
   Skeleton Shimmer loaders
   ========================================================================== */
.skeleton-card {
  border: 1px solid var(--border-color);
  height: 220px;
  padding: 1.5rem;
  border-radius: 4px;
  background: linear-gradient(90deg,
      var(--bg-primary) 25%,
      var(--bg-secondary) 50%,
      var(--bg-primary) 75%);
  background-size: 200% 100%;
  animation: loading-shimmer 1.5s infinite;
  pointer-events: none;
}

@keyframes loading-shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

.no-data {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-secondary);
  padding: 3rem 0;
}

/* ==========================================================================
   Responsive Breakpoints & Media Queries
   ========================================================================== */

/* Tablet (1024px and below) */
@media (max-width: 1024px) {
  .roadmap-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile landscape (768px and below) */
@media (max-width: 768px) {
  .header-container {
    padding: 1rem 1.25rem;
  }

  .mobile-menu-toggle {
    display: flex;
    order: 3;
  }

  .nav {
    position: fixed;
    top: 59px;
    right: -100%;
    width: 260px;
    height: calc(100vh - 59px);
    background-color: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 1.5rem;
    gap: 1.5rem;
    transition: right var(--transition-speed) ease;
    z-index: 99;
  }

  .nav.open {
    right: 0;
  }

  /* Hamburger transform when menu is open */
  .mobile-menu-toggle.open .bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .mobile-menu-toggle.open .bar:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.open .bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .theme-toggle-btn {
    margin-left: auto;
    margin-right: 1rem;
    order: 2;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-motto {
    font-size: 1rem;
  }

  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .join-container {
    grid-template-columns: 1fr;
  }
}

/* Mobile Portrait (480px and below) */
@media (max-width: 480px) {
  .hero-wrapper {
    padding: 3rem 1rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
  }

  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .discussions-grid {
    grid-template-columns: 1fr;
  }

  .resource-category-section {
    padding: 1.25rem;
  }

  .resources-grid {
    grid-template-columns: 1fr;
  }

  .about-vision-block {
    padding: 1.5rem;
  }
}



/* ==========================================================================
   Select Related Lecture Modal & Copy Link Button Styles
   ========================================================================== */

/* Related Lectures Selector */
.select-modal-link {
  display: flex;
  flex-direction: column;
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  border-radius: 4px;
  text-align: left;
  transition: all var(--transition-speed) ease;
  cursor: pointer;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
}

.select-modal-link:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-secondary);
}

.select-modal-link .lecture-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.select-modal-link .course-name-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  word-break: break-all;
}

/* Copy ID Link Buttons */
.btn-copy-id {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  background: none;
}

.btn-copy-id:hover {
  color: var(--text-primary);
  border-color: var(--border-color);
  background-color: var(--bg-secondary);
}

.copy-icon {
  width: 14px;
  height: 14px;
  stroke-width: 2;
  transition: transform 0.15s ease, color 0.15s ease;
}

.copy-icon.success {
  color: #10b981;
  /* Green checkmark */
}

.btn-copy-id.copy-success {
  border-color: rgba(16, 185, 129, 0.3);
  background-color: rgba(16, 185, 129, 0.05);
}

/* ==========================================================================
   OBE Cracked - Component & Page Styles (Pure Black & High Contrast)
   ========================================================================== */

/* OBE Hero Section */
.obe-hero-section {
  padding: 3rem 1.5rem 2rem;
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.obe-hero-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.obe-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.obe-hero-title {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.1;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.obe-hero-tagline {
  font-family: var(--font-body);
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 700px;
}

/* Narrative Box (Academic vs Real World) */
.obe-narrative-box {
  width: 100%;
  margin-top: 1rem;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  user-select: none;
  transition: border-color var(--transition-speed) ease;
}

.obe-narrative-box:hover,
.obe-narrative-box:focus {
  border-color: var(--border-hover);
  outline: none;
}

.obe-narrative-column {
  flex: 1;
  padding: 1.5rem;
}

.obe-narrative-column.academic {
  border-right: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.obe-narrative-column.engineering {
  background-color: var(--bg-secondary);
}

.obe-narrative-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.obe-narrative-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.obe-narrative-context {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.obe-cycle-hint {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  color: #2563eb;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

body.light-theme .obe-cycle-hint {
  color: #1d4ed8;
}

.obe-narrative-column.academic .obe-narrative-label {
  color: var(--text-muted);
}

.obe-narrative-column.engineering .obe-narrative-label {
  color: #2563eb;
}

body.light-theme .obe-narrative-column.engineering .obe-narrative-label {
  color: #1d4ed8;
}

.obe-narrative-context,
.obe-narrative-text {
  transition: opacity 0.18s cubic-bezier(0.4, 0, 0.2, 1), transform 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

.obe-narrative-context.cycling,
.obe-narrative-text.cycling {
  opacity: 0;
  transform: translateY(-6px);
}

.obe-narrative-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.obe-narrative-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0 1rem;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 900;
  color: var(--text-muted);
  background-color: var(--bg-tertiary);
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
}

.obe-vs-badge {
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.obe-narrative-counter {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

/* OBE Filters Section */
.obe-filters-section {
  padding: 1.5rem 1.5rem;
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.obe-filters-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.obe-course-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.obe-filter-label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.obe-course-select {
  padding: 0.65rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  outline: none;
  min-width: 280px;
  transition: border-color var(--transition-speed) ease;
}

.obe-course-select:hover,
.obe-course-select:focus {
  border-color: var(--border-hover);
}

/* Category Filter Tabs */
.obe-category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.obe-filter-tab {
  padding: 0.5rem 1rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}

.obe-filter-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.obe-filter-tab.active {
  color: var(--bg-primary);
  background-color: var(--text-primary);
  border-color: var(--text-primary);
}

/* Outcome Mapping Cards Section */
.obe-cards-section {
  padding: 1.5rem 1.5rem 3rem;
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.obe-cards-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.obe-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.obe-section-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
}

.obe-section-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  max-width: 650px;
}

.obe-cards-count {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.obe-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 1.5rem;
}

/* Individual Outcome Card */
.obe-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition-speed) ease;
}

.obe-card:hover {
  border-color: var(--border-hover);
}

.obe-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.obe-card-badge-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.obe-tag {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.obe-tag-co {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.obe-tag-po1 {
  background-color: #1e3a8a;
  color: #93c5fd;
  border: 1px solid #2563eb;
}

.obe-tag-po3 {
  background-color: #064e3b;
  color: #6ee7b7;
  border: 1px solid #059669;
}

.obe-tag-po5 {
  background-color: #4c1d95;
  color: #c4b5fd;
  border: 1px solid #7c3aed;
}

.obe-tag-po9_po10 {
  background-color: #78350f;
  color: #fde68a;
  border: 1px solid #d97706;
}

body.light-theme .obe-tag-po1 {
  background-color: #eff6ff;
  color: #1d4ed8;
  border-color: #93c5fd;
}

body.light-theme .obe-tag-po3 {
  background-color: #ecfdf5;
  color: #047857;
  border-color: #6ee7b7;
}

body.light-theme .obe-tag-po5 {
  background-color: #f5f3ff;
  color: #6d28d9;
  border-color: #c4b5fd;
}

body.light-theme .obe-tag-po9_po10 {
  background-color: #fffbeb;
  color: #b45309;
  border-color: #fde68a;
}

.obe-bloom-tag {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.obe-card-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.obe-block-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.obe-formal-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-secondary);
  font-style: italic;
}

.obe-practical-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 500;
}

.obe-applied-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

.obe-resume-box {
  background-color: var(--bg-primary);
  border-left: 3px solid #2563eb;
  padding: 0.75rem 1rem;
  border-radius: 0 6px 6px 0;
}

body.light-theme .obe-resume-box {
  border-left-color: #1d4ed8;
  background-color: #f8fafc;
}

.obe-resume-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 600;
}

/* Sandbox Section */
.obe-sandbox-section {
  padding: 3rem 1.5rem 4rem;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.obe-sandbox-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.obe-sandbox-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.obe-sandbox-subtitle {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.obe-sandbox-checklist-wrapper,
.obe-sandbox-dashboard-wrapper {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}

.obe-sandbox-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.obe-task-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}

.obe-task-item:hover {
  border-color: var(--border-hover);
}

.obe-task-checkbox {
  margin-top: 0.2rem;
  width: 18px;
  height: 18px;
  accent-color: #2563eb;
  cursor: pointer;
}

.obe-task-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.obe-task-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.obe-task-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* PO Status Cards Dashboard */
.obe-sandbox-po-badges {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
}

.obe-po-status-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: all var(--transition-speed) ease;
}

.obe-po-status-card.active {
  border-color: #2563eb;
  background-color: rgba(37, 99, 235, 0.08);
}

body.light-theme .obe-po-status-card.active {
  border-color: #1d4ed8;
  background-color: #eff6ff;
}

.obe-po-status-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.obe-po-code {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.obe-po-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.obe-po-status-indicator {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--text-muted);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
}

.obe-po-status-card.active .obe-po-status-indicator {
  color: #2563eb;
  border-color: #2563eb;
  background-color: var(--bg-primary);
}

body.light-theme .obe-po-status-card.active .obe-po-status-indicator {
  color: #1d4ed8;
  border-color: #1d4ed8;
}

/* Log Box */
.obe-sandbox-log-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
}

.obe-log-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.obe-log-content {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.obe-log-empty {
  font-style: italic;
  color: var(--text-muted);
}

.obe-log-item {
  padding: 0.5rem;
  background-color: var(--bg-primary);
  border-left: 2px solid #2563eb;
  border-radius: 0 4px 4px 0;
  color: var(--text-primary);
}

/* Responsive Media Queries for OBE */
@media (max-width: 900px) {
  .obe-sandbox-layout {
    grid-template-columns: 1fr;
  }

  .obe-cards-grid {
    grid-template-columns: 1fr;
  }

  .obe-narrative-box {
    flex-direction: column;
  }

  .obe-narrative-column.academic {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .obe-narrative-divider {
    padding: 0.5rem;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
  }
}

/* ==========================================================================
   Homepage Batchwise Admins Dropdown Styles
   ========================================================================== */
.admins-container {
  max-width: 950px;
  margin: 0 auto;
  padding: 1rem 0;
}

.admins-dropdown-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.departments-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dept-accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-secondary);
  overflow: hidden;
  transition: border-color var(--transition-speed) ease;
}

.dept-accordion-item:hover {
  border-color: var(--border-hover);
}

.dept-accordion-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  background: var(--bg-secondary);
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  color: var(--text-primary);
  transition: background-color var(--transition-speed) ease;
}

.dept-accordion-header:hover {
  background-color: var(--bg-tertiary);
}

.dept-header-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.dept-name-tag {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
}

.dept-full-name {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.dept-accordion-header[aria-expanded="true"] .accordion-arrow {
  transform: rotate(180deg);
}

.dept-accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background-color: var(--bg-primary);
}

.dept-accordion-item.expanded .dept-accordion-content,
.dept-accordion-header[aria-expanded="true"] + .dept-accordion-content {
  border-top: 1px solid var(--border-color);
  padding: 1.5rem;
}

.dept-batches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.25rem;
}

@media (max-width: 640px) {
  .dept-batches-grid {
    grid-template-columns: 1fr;
  }
  .dept-full-name {
    display: none;
  }
}

.batch-card {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-secondary);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition-speed) ease;
}

.batch-card:hover {
  border-color: var(--border-hover);
}

.batch-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.batch-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.batch-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.batch-admins-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.admin-member-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
}

.admin-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.admin-avatar-placeholder {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.admin-avatar-placeholder svg {
  width: 18px;
  height: 18px;
}

.admin-details {
  display: flex;
  flex-direction: column;
}

.admin-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.admin-role {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.admin-contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  text-decoration: none;
  transition: all var(--transition-speed) ease;
  flex-shrink: 0;
}

.admin-contact-btn:hover {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.admin-contact-btn svg {
  width: 12px;
  height: 12px;
}

.admins-note {
  text-align: center;
  padding-top: 0.5rem;
}

.note-badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  font-style: italic;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
}