/**
 * Student Dashboard - Clean Card Design
 * Inspired by modern educational platforms
 */

/* ============================================
   Base & Layout
   ============================================ */

body.sd-dashboard-active,
body.sd-dashboard-active html {
  background-color: #e5e4fa !important;
  background-image: none !important;
  margin: 0 !important;
  padding: 0 !important;
  width: 100% !important;
  overflow-x: hidden !important;
}

.sd-dashboard,
.spellingbee-dashboard-fullwidth {
  min-height: 100vh;
  background: #e5e4fa !important;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1E293B;
  position: relative;
  z-index: 1;
  width: 100% !important;
  max-width: 100% !important;
  display: block !important;
}

.sd-page {
  max-width: 1200px;
  margin: 0 auto !important;
  padding: 40px 28px;
  position: relative;
  z-index: 10;
}

/* ============================================
   Header
   ============================================ */

.sd-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.sd-nav-link {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
  padding: 10px 16px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sd-nav-link:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.sd-shield-inventory {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 10px 18px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s;
}

.sd-shield-inventory:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.sd-shield-badge-count {
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
}

/* ============================================
   Hero Section
   ============================================ */

.sd-hero-new {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 48px;
  gap: 32px;
}

.sd-hero-content {
  margin-bottom: 0px;
  flex-shrink: 0;
}

.sd-hero-title-new {
  font-size: var(--sc4k-font-title, 48px);
  font-weight: 800;
  color: #0F172A !important;
  margin-bottom: 12px;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.sd-hero-title-new span {
  color: #F16334 !important;
}

.sd-hero-subtitle-new {
  font-size: var(--sc4k-font-body, 16px);
  color: #4662c0;
  margin-top: 10px;
  font-weight: 500;
  opacity: 0.9;
}

.sd-hero-illustration {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 20px;
  padding: 20px;
  backdrop-filter: blur(10px);
}

/* Responsive Hero Tablet/Mobile Adjustment */
@media (max-width: 992px) {
  .sd-hero-new {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 32px;
  }
  
  .sd-action-bar {
    justify-content: flex-start;
    width: 100%;
    flex-wrap: wrap;
  }
  
  .sd-action-btn {
    flex: 1 1 calc(50% - 12px); /* 2 per row on smaller screens */
    min-width: 140px;
  }
}

.sd-hero-book-icon {
  width: 60px;
  height: 60px;
}

/* ============================================
   Action Bar
   ============================================ */

.sd-action-bar {
  background: transparent !important;
  border-radius: 20px;
  padding: 10px;
  display: flex !important;
  justify-content: flex-end;
  gap: 12px;
  box-shadow: none !important;
  margin-bottom: 0 !important;
  flex-grow: 1;
}

.sd-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px !important;
  border-radius: 14px;
  font-weight: 700;
  font-size: var(--sc4k-font-body, 16px) !important;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none !important;
  min-width: 160px;
}

#sd-assignments-page #sd-btn-back-dashboard.sd-back-dashboard-btn,
#sd-assignments-page #sd-btn-back-dashboard.sd-back-dashboard-btn span,
#sd-assignments-page #sd-btn-back-dashboard.sd-back-dashboard-btn .material-symbols-outlined {
  color: #4f3c86 !important;
  -webkit-text-fill-color: #4f3c86 !important;
}
#sd-assignments-page #sd-btn-back-dashboard.sd-back-dashboard-btn {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  background: #ffffff !important;
  border: 2px solid #cebcfc !important;
  border-radius: 99px !important;
  padding: 10px 18px !important;
  font-weight: 800 !important;
  font-size: 14px !important;
  min-width: 0;
  box-shadow: 0 2px 8px rgba(79, 60, 134, 0.08) !important;
}

.sd-btn-start {
  background: #6d28d9;
  color: #ffffff;
}

.sd-btn-start:hover {
  background: #5b21b6;
  transform: translateY(-2px);
}

.sd-btn-review {
  background: #fed7aa;
  color: #9a3412;
}

.sd-btn-review:hover {
  background: #fdba74;
  transform: translateY(-2px);
}

.sd-btn-reading {
  background: #a7f3d0;
  color: #065f46;
  text-decoration: none !important;
}

.sd-btn-reading:hover {
  background: #6ee7b7;
  transform: translateY(-2px);
  text-decoration: none !important;
}

/* ============================================
   Stats & Achievements - 4 Column Grid Layout
   ============================================ */

.sd-stats-achievements {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

/* Remove default card styling */
.sd-card.sd-stats-card,
.sd-card.sd-achievements-card {
  background: transparent;
  border: none;
  padding: 0 !important;
  box-shadow: none;
  display: contents;
}

/* Individual stat cards */
.sd-stats-grid {
  display: contents;
}

.sd-stat-tile {
  background: #ffffff;
  border-radius: 20px;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  min-height: 100px;
}

.sd-stat-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.sd-stat-tile.blue {
  background: #eff6ff !important;
  border: 2px solid #3b82f6 !important;
  color: #1e40af !important;
}

.sd-stat-tile.purple {
  background: #fdf4ff !important;
  border: 2px solid #a855f7 !important;
  color: #701a75 !important;
}

.sd-stat-tile.orange {
  background: #fff7ed !important;
  border: 2px solid #f97316 !important;
  color: #9a3412 !important;
}

.sd-stat-icon {
  width: 44px !important;
  height: 44px !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: #ffffff !important;
  border: 1.5px solid currentColor !important;
  color: inherit !important;
  font-size: 20px !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04) !important;
}

.sd-stat-icon.sd-calendar-icon img {
  width: 22px;
  height: 22px;
  display: block;
}

.sd-stat-value {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: inherit;
}

.sd-stat-label {
  font-size: var(--sc4k-font-label, 12px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: inherit;
  opacity: 0.8;
}

/* Achievement cards in grid */
.sd-achievements-grid {
  display: contents;
}

.sd-achievement-streak {
  background: #fefce8 !important;
  border: 2px solid #eab308 !important;
  border-radius: 20px !important;
  padding: 20px 16px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  box-shadow: 0 4px 12px rgba(234, 179, 8, 0.1) !important;
  min-height: 100px;
  opacity: 1 !important;
  filter: none !important;
  transition: all 0.2s;
  color: #854d0e !important;
  order: 1;
}

.sd-achievement-streak:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.sd-card-link-hint {
  margin-top: 2px;
  font-size: 11px;
  font-weight: 800;
  color: #b45309;
  letter-spacing: 0.02em;
  opacity: 0.9;
}
.sd-card-is-link:hover .sd-card-link-hint {
  text-decoration: underline;
}
.sd-wallet-shield-sub {
  margin-top: 2px;
  font-size: 12px;
  font-weight: 700;
  color: #64748b;
  text-align: center;
  line-height: 1.2;
}
.sd-stars-shields-row {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 2px;
  flex-wrap: nowrap;
}
.sd-stars-shields-item {
  flex: 1 1 0;
  min-width: 0;
  text-align: center;
}
.sd-stars-shields-num {
  font-size: 24px !important;
  font-weight: 900 !important;
  line-height: 1.1 !important;
  color: inherit !important;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  overflow: visible;
}
.sd-stars-shields-lbl {
  margin-top: 4px;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.75;
  white-space: nowrap;
}
.sd-stars-shields-divider {
  width: 1px;
  flex: 0 0 1px;
  align-self: stretch;
  background: rgba(55, 48, 163, 0.22);
  margin: 2px 0;
}
.sd-achievement-shield {
  cursor: pointer !important;
}
.sd-achievement-shield:hover {
  transform: translateY(-4px);
}

.sd-achievement-streak .sd-stat-icon {
  background: rgba(255, 255, 255, 0.5);
  font-size: 32px;
  width: 40px;
  height: 40px;
  border: none;
}

.sd-achievement-streak .sd-stat-value {
  font-size: 36px;
  color: #78350f;
  font-weight: 800;
}

.sd-achievement-streak .sd-stat-label {
  font-size: 11px;
  color: #78350f;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.sd-achievement-stars {
  background: #eff6ff !important;
  border: 2px solid #3b82f6 !important;
  order: 3;
  border-radius: 20px !important;
  padding: 20px 16px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1) !important;
  min-height: 100px;
  opacity: 1 !important;
  filter: none !important;
  transition: all 0.2s;
  color: #1d4ed8 !important;
}

.sd-achievement-stars:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}

.sd-achievement-activities {
  background: #ecfdf5 !important;
  border: 2px solid #10b981 !important;
  order: 4;
  border-radius: 20px !important;
  padding: 20px 16px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.1) !important;
  min-height: 100px;
  opacity: 1 !important;
  filter: none !important;
  transition: all 0.2s;
  color: #065f46 !important;
}

.sd-achievement-activities:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.sd-achievement-icon {
  font-size: 32px !important;
  width: 44px !important;
  height: 44px !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: #ffffff !important;
  border: 1.5px solid currentColor !important;
  color: inherit !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04) !important;
}

.sd-achievement-text-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.sd-achievement-label {
  font-size: 11px !important;
  font-weight: 700 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: inherit !important;
  margin: 0 !important;
  opacity: 0.9;
}



.sd-achievement-flashcards {
  background: #fdf4ff !important;
  border: 2px solid #a855f7 !important;
  border-radius: 20px !important;
  padding: 20px 16px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  box-shadow: 0 4px 12px rgba(168, 85, 247, 0.1) !important;
  min-height: 100px;
  transition: all 0.2s;
  color: #701a75 !important;
  order: 2;
}

.sd-achievement-flashcards:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
}

.sd-flashcards-total-value,
.sd-shield-total-value {
  font-size: 36px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  color: inherit !important;
}

/* Shield / My Wallet Card - Indigo (first-row end slot) */
.sd-achievement-shield {
  background: #eef2ff !important;
  border: 2px solid #6366f1 !important;
  border-radius: 20px !important;
  padding: 16px 10px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 6px !important;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1) !important;
  min-height: 100px;
  opacity: 1 !important;
  filter: none !important;
  transition: all 0.2s;
  color: #3730a3 !important;
  order: 0;
  min-width: 0;
  overflow: visible;
}
.sd-achievement-shield .sd-achievement-text-stack {
  width: 100%;
  min-width: 0;
}

.sd-achievement-shield:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.sd-stars-total-value,
.sd-activities-total-value,
.sd-flashcards-total-value,
.sd-shield-total-value {
  font-size: 36px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  color: inherit !important;
}

/* ============================================
   Grade Selector
   ============================================ */

.sd-grade-tabs {
  margin-top: 40px;
  display: flex;
  justify-content: center;
}

.sd-grade-tabs-container {
  padding: 8px !important;
  border-radius: 50px !important;
  display: inline-flex !important;
  gap: 6px !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

.sd-grade-tab {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  font-weight: 700 !important;
  font-size: var(--sc4k-font-small, 14px) !important;
  border: 2px solid #76347d !important;
  background: #fdf2ff !important;
  color: #76347d !important;
  cursor: pointer !important;
  transition: all 0.2s !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05) !important;
}

.sd-grade-tab.active {
  background: #76347d !important;
  color: #ffffff !important;
  border-color: #76347d !important;
}

.sd-grade-tab:hover:not(.active) {
  background: #f3f4f6;
  color: #374151;
}

/* ============================================
   Word Lists
   ============================================ */

/* ============================================
   Word Lists - REBUILT COMPACT CARDS
   ============================================ */

.sd-recommended-lists {
  margin-top: 0px !important;
  width: 100% !important;
}

.sd-lists-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)) !important;
  gap: 32px !important;
  row-gap: 32px !important;
  width: 100% !important;
  justify-content: center !important;
  align-items: stretch !important;
}

/* Base Card Container fallback for Theme stability */
.recommended-card {
  background: #ffffff !important;
  border: 2px solid #cebcfc !important; /* Brand Light Purple Border */
  box-shadow: 0 5px 0 #cebcfc !important; /* Brand Thump Shadow */
  border-radius: 20px !important;
  padding: 1.5rem !important;
  display: flex !important;
  flex-direction: column !important;
  transition: all 0.2s ease-in-out !important;
  position: relative !important;
  min-height: 240px !important;
  width: 100% !important;
}

.recommended-card:hover {
  transform: none !important;
  box-shadow:
    0 8px 15px rgba(118, 52, 125, 0.05),
    0 5px 0 #cebcfc !important;
}

/* Internal Card Sections */
.card-header-v2 {
  margin-bottom: 1.25rem !important;
  width: 100% !important;
}

.card-title-section {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  margin-bottom: 0.75rem !important;
  width: 100% !important;
}

.card-main-title {
  font-size: 22px !important;
  font-weight: 700 !important;
  color: #76347d !important;
  margin: 0 !important;
  letter-spacing: -0.01em !important;
}

.card-mastered-percentage {
  font-size: 14px !important;
  font-weight: 900 !important;
  padding: 4px 12px !important;
  border-radius: 999px !important;
  background: #f1f5f9 !important;
  color: #64748b !important;
}

.card-stars-line {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  margin: 12px 0 !important;
  font-family: 'Outfit', sans-serif !important;
}

.cs-icon {
  font-size: 1rem !important;
}

.cs-label {
  font-size: 17px !important;
  font-weight: 800 !important;
  color: #76347d !important;
}

.cs-metric {
  font-size: 17px !important;
  font-weight: 400 !important;
  color: #76347d !important;
}

.cs-metric strong {
  font-weight: 800 !important;
  color: #76347d !important;
}

.cs-dot {
  color: #cbd5e1 !important;
  font-size: 1rem !important;
}

.card-mastered-pill {
  display: flex !important;
  align-items: center !important;
  gap: 6px !important;
  font-size: 10px !important;
  font-weight: 800 !important;
  padding: 4px 10px !important;
  border-radius: 9999px !important;
  border: 1px solid transparent !important;
  text-transform: uppercase !important;
}

/* Specific colors for the mastery pill when it's the 'DONE' achievement */
.card-mastered-pill.gold_achievement {
  background-color: #fef3c7 !important;
  color: #92400e !important;
  border-color: #fde68a !important;
}

/* Level Indicator Grid */
.card-levels-grid {
  display: flex !important;
  gap: 12px !important;
  margin-top: 1.5rem !important;
  margin-bottom: 1.25rem !important;
  width: 100% !important;
}

.sd-level-column {
  flex: 1 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 8px !important;
  min-width: 0 !important;
}

.status-badge-base {
  font-size: 17px !important;
  font-weight: 700 !important;
  padding: 6px 4px !important;
  border-radius: 6px !important;
  text-transform: none !important;
  border: none !important;
  white-space: nowrap !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 6px !important;
  color: #94a3b8 !important;
  /* Default Todo Gray */
  background: transparent !important;
  transition: all 0.3s ease !important;
}

.status-badge-base span {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 16px !important;
  height: 16px !important;
  border-radius: 4px !important;
  font-size: 0.65rem !important;
}

.status-badge-done {
  color: #10b981 !important;
  background: rgba(16, 185, 129, 0.08) !important;
}

.status-badge-done span {
  background: #10b981 !important;
  color: white !important;
}

.status-badge-active {
  color: #76347d !important;
  background: rgba(206, 188, 252, 0.25) !important;
  box-shadow: 0 0 15px rgba(206, 188, 252, 0.2) !important;
  font-size: 17px !important;
  font-weight: 800 !important;
}

.status-badge-active span {
  background: #76347d !important;
  color: #fbb7fe !important;
}

.status-badge-todo {
  color: #5a6a7c !important;
}

/* New Segmented Progress Tracks */
.sd-level-track-wrapper {
  width: 100% !important;
  height: 6px !important;
  background-color: #f1f5f9 !important;
  border-radius: 999px !important;
  overflow: hidden !important;
}

.sd-level-fill {
  height: 100% !important;
  border-radius: 999px !important;
  transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

.sd-tier-detail-line {
  margin-top: 2px !important;
  margin-bottom: 1.25rem !important;
  font-size: 16px !important;
  font-weight: 600 !important;
  letter-spacing: 0.5px !important;
  text-align: center !important;
  min-height: 1.25rem !important;
}

.sd-done-mini-badge {
  font-size: 9px !important;
  font-weight: 800 !important;
  color: #059669 !important;
  background: #f0fdf4 !important;
  padding: 2px 8px !important;
  border-radius: 999px !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 3px !important;
  margin-left: 8px !important;
  border: 1px solid #dcfce7 !important;
}

.status-badge-progress {
  /* Backward compatibility if needed, but we'll use active mostly */
  background-color: #eff6ff !important;
  color: #1d4ed8 !important;
  border-color: #bfdbfe !important;
}

/* Button Section */
.card-btn-container {
  width: 100% !important;
  display: block !important;
}

.btn-practice-full {
  width: 100% !important;
  display: block !important;
  text-align: center !important;
  padding: 12px 24px !important;
  background-color: transparent !important;
  color: #76347d !important;
  border-radius: 20px !important;
  font-size: 16px !important;
  font-weight: 800 !important;
  border: 2px solid #76347d !important;
  box-shadow: 0 4px 0 rgba(118, 52, 125, 0.2) !important;
  cursor: pointer !important;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
  text-transform: none !important;
  text-decoration: none !important;
}

.btn-practice-full:hover {
  transform: translateY(2px) !important;
  box-shadow: 0 2px 0 rgba(118, 52, 125, 0.2) !important;
  background-color: #76347d !important;
  color: #fbb7fe !important;
  border-color: #76347d !important;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .sd-stats-achievements {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sd-page {
    padding: 32px 20px;
  }

  .sd-hero-title-new {
    font-size: 36px;
  }

  .sd-hero-content {
    flex-direction: column;
    gap: 20px;
  }

  .sd-action-bar {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .sd-hero-title-new {
    font-size: 28px;
  }

  .sd-grade-tabs-container {
    flex-wrap: wrap;
  }
}

/* Due Date & Overdue Badge */
.sd-overdue-badge {
  position: absolute !important;
  top: -10px !important;
  right: -10px !important;
  background-color: #ef4444 !important;
  color: #ffffff !important;
  padding: 4px 10px !important;
  border-radius: 8px !important;
  font-size: 10px !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1) !important;
  z-index: 20 !important;
  border: 1px solid #ffffff !important;
}

.sd-due-date-label {
  font-size: 0.8rem !important;
  font-weight: 700 !important;
  margin-top: 8px !important;
  display: block !important;
}

.sd-due-today {
  animation: sd-due-blink 1.2s ease-in-out infinite;
  text-shadow: 0 0 10px rgba(245, 158, 11, 0.4);
  display: inline-block !important;
}

@keyframes sd-due-blink {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.18);
  }

  100% {
    transform: scale(1);
  }
}

/* ============================================
   Stats Tables & Consistent UI
   ============================================ */

.sd-stats-summary-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 24px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 32px;
  width: fit-content;
  min-width: 200px;
  margin-left: auto;
  margin-right: auto;
}

.sd-stats-summary-card .sd-summary-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #64748b;
  margin-bottom: 8px;
}

.sd-stats-summary-card .sd-summary-value {
  font-size: 48px;
  font-weight: 800;
  color: #1e293b;
  line-height: 1;
}

.sd-card-table-wrap {
  background: #ffffff;
  border-radius: 24px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sd-stats-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
}

.sd-stats-table th {
  background: #f1f5f9;
  color: #6366f1;
  /* Indigo highlight */
  font-weight: 800;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 22px 24px;
  text-align: left;
  border-bottom: 2px solid #e2e8f0;
}

.sd-dashboard-stats .sd-header {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  margin: -40px -28px 40px -28px;
  padding: 15px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.sd-dashboard-stats .sd-nav-link {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sd-dashboard-stats .sd-nav-link:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.sd-stats-table td {
  padding: 18px 24px;
  color: #334155;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid #f1f5f9;
}

.sd-stats-table tr:last-child td {
  border-bottom: none;
}

.sd-stats-table tr:hover {
  background: #f8fafc;
}

/* Empty State */
.sd-empty-state {
  text-align: center;
  padding: 60px 20px;
  background: white;
  border-radius: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.sd-empty-state .empty-state-icon {
  font-size: 64px;
  margin-bottom: 24px;
}

.sd-empty-state h2 {
  font-size: 24px;
  font-weight: 800;
  color: #1e293b;
  margin-bottom: 12px;
}

.sd-empty-state p {
  color: #64748b;
  font-size: 16px;
}

.sd-assign-empty {
  grid-column: 1 / -1;
  text-align: center;
  background: #ffffff;
  border: 1px solid #cebcfc;
  border-radius: 20px;
  padding: 36px 24px;
  box-shadow: 0 4px 16px rgba(79, 60, 134, 0.07);
}
.sd-assign-empty-icon { font-size: 40px; margin-bottom: 10px; }
.sd-assign-empty-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: #4f3c86;
}
.sd-assign-empty-sub {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #7c6aaa;
  line-height: 1.45;
}

/* Pagination */
.sd-slider-pagination-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.sd-pagination-mini-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.sd-page-indicator-text {
  font-size: 16px;
  font-weight: 800;
  color: #76347d;
  background: white;
  padding: 8px 24px;
  border-radius: 30px;
  box-shadow: 0 4px 15px rgba(118, 52, 125, 0.15);
  border: 1.5px solid rgba(118, 52, 125, 0.2);
  min-width: 120px;
  text-align: center;
}

.sd-mini-nav-btn {
  background: white;
  border: 2px solid #76347d;
  color: #76347d;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  padding: 0;
  outline: none !important;
}

.sd-mini-nav-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  pointer-events: none;
}

.sd-mini-nav-btn:hover:not(:disabled) {
  background: #76347d;
  color: white;
  transform: scale(1.15);
  box-shadow: 0 6px 15px rgba(118, 52, 125, 0.3);
  outline: none !important;
  border-color: #76347d !important;
}

.sd-mini-nav-btn:focus,
.sd-mini-nav-btn:focus-visible,
.sd-mini-nav-btn:active {
  outline: none !important;
  border-color: #76347d !important;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1) !important;
}

.sd-mini-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  border-color: #cbd5e1;
  color: #cbd5e1;
  background: #f8fafc;
  box-shadow: none;
}

.sd-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.sd-page-btn {
  background: #ffffff;
  border: none;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 14px;
  color: #6366f1;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.sd-page-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.sd-page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.sd-page-status {
  font-weight: 700 !important;
  color: #ffffff !important;
  background: #6366f1 !important;
  /* Using Indigo to stand out as a status indicator */
  padding: 6px 20px !important;
  border-radius: 50px !important;
  font-size: 14px !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
}

/* ============================================
   Horizontal Carousel with Dual-Row Grid (2 Rows x 3 Columns)
   ============================================ */

.sd-lists-slider-container {
  width: 100%;
  margin-top: 0px;
  padding-bottom: 24px;
  /* Provide breathing room below the slider controls */
}

.sd-slider-main-wrapper {
  position: relative;
  width: 100%;
  padding: 0;
  display: flex;
  align-items: center;
}

.sd-dual-row-grid-slider {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)) !important;
  grid-auto-flow: row !important;
  gap: 24px !important;
  width: 100% !important;
  overflow-x: visible !important;
}

.sd-dual-row-grid-slider .recommended-card {
  width: 100% !important;
  min-width: 0 !important;
  max-width: 100% !important;
  height: auto !important;
  min-height: 260px !important;
  margin: 0 !important;
}

/* Navigation Arrows - Precision Alignment Fix */
.sd-slider-nav-btn {
  display: none !important;
  position: absolute !important;
  top: 50% !important;
  transform: translateY(-50%) !important;
  width: 56px !important;
  height: 56px !important;
  margin: 0 !important;
  padding: 0 !important;
  background-color: #f97316 !important;
  border: none !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  z-index: 100 !important;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4) !important;
  transition: all 0.2s ease !important;
  overflow: visible !important;
}

.sd-slider-nav-btn svg {
  width: 32px !important;
  height: 32px !important;
  stroke: white !important;
  stroke-width: 4px !important;
  display: block !important;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2)) !important;
  pointer-events: none !important;
}

.sd-slider-nav-btn:hover:not(:disabled) {
  background-color: #ea580c !important;
  transform: translateY(-50%) scale(1.1) !important;
  outline: none !important;
}

.sd-slider-nav-btn:focus,
.sd-slider-nav-btn:active {
  outline: none !important;
}

.sd-slider-nav-btn:disabled {
  background-color: #94a3b8 !important;
  cursor: not-allowed !important;
  box-shadow: none !important;
  opacity: 0.6 !important;
}

.sd-slider-nav-btn.prev {
  left: -28px !important;
  margin-top: -6px !important;
  /* Forceful correction for parallel alignment */
}

.sd-slider-nav-btn.next {
  right: -28px !important;
}

/* Pagination Header (Dots & Text) */
.sd-slider-pagination-header {
  display: flex;
  flex-direction: column;
  /* Stack text above dots */
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-top: 0px;
  /* Added space from Grade buttons */
  margin-bottom: 20px;
  width: 100%;
}

.sd-slider-dots.top {
  display: none !important;
}

.sd-page-indicator-text {
  color: #76347d !important;
  font-size: 14px !important;
  font-weight: 800 !important;
  background: #fdf2ff !important;
  padding: 10px 24px !important;
  border-radius: 50px !important;
  border: 1.5px solid #fbb7fe !important;
  box-shadow: 0 4px 10px rgba(118, 52, 125, 0.1) !important;
  font-family: 'Outfit', sans-serif !important;
  letter-spacing: 0.5px !important;
  text-transform: none !important;
}

.sd-slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #e2e8f0;
  /* Light Gray for inactive */
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0.8;
}

.sd-slider-dot.active {
  background-color: #f97316;
  /* Bold Orange for active */
  width: 28px;
  border-radius: 10px;
  opacity: 1;
}

@media (max-width: 768px) {
  .sd-dual-row-grid-slider {
    grid-template-columns: 1fr !important;
    grid-template-rows: repeat(1, auto) !important;
    grid-auto-columns: minmax(0, 1fr) !important;
  }

  .sd-dual-row-grid-slider .recommended-card {
    width: 100% !important;
    min-width: 0 !important;
  }
}

/* ============================================
   Premium Gamified Button Styles (VIBRANT SYNC VERSION)
   ============================================ */
.premium-glass-lock {
  position: relative;
  /* Vivid Indigo Gradient that syncs with the Dashboard theme */
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.55) 0%, rgba(49, 46, 129, 0.8) 100%) !important;
  backdrop-filter: blur(12px) saturate(200%);
  -webkit-backdrop-filter: blur(12px) saturate(200%);
  border: 1.8px solid rgba(255, 255, 255, 0.3) !important;
  display: flex !important;
  align-items: center;
  gap: 12px;
  padding: 10px 20px !important;
  overflow: hidden;
  cursor: default !important;
  box-shadow: 0 10px 30px rgba(49, 46, 129, 0.35), inset 0 0 15px rgba(255, 255, 255, 0.1);
  color: white !important;
  min-width: 220px;
  border-radius: 14px !important;
}

.shimmer-bar {
  position: absolute;
  top: -50%;
  left: -150%;
  width: 200%;
  height: 200%;
  background: linear-gradient(115deg,
      transparent 0%,
      transparent 40%,
      rgba(255, 255, 255, 0.35) 50%,
      transparent 60%,
      transparent 100%);
  animation: shimmer-sweep 4s infinite linear;
}

@keyframes shimmer-sweep {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(150%);
  }
}

.lock-title {
  font-weight: 800 !important;
  font-size: 15px !important;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  /* Strong shadow for readability */
  color: #ffffff !important;
}

.lock-subtitle {
  font-size: 11px !important;
  font-weight: 900 !important;
  color: #FFCC00 !important;
  /* Brighter, bolder Gold */
  text-transform: uppercase;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  letter-spacing: 0.5px;
}

.premium-glass-lock:hover {
  animation: lock-jiggle 0.5s ease-in-out;
  background: rgba(0, 0, 0, 0.2) !important;
}

@keyframes lock-jiggle {

  0%,
  100% {
    transform: scale(1);
  }

  20% {
    transform: scale(1.02) rotate(-1.5deg);
  }

  40% {
    transform: rotate(1.5deg);
  }

  60% {
    transform: rotate(-1.5deg);
  }
}

.progress-lock-icon {
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.4));
}
/* ============================================
   Mobile — 600px and below (phones)
   ============================================ */

@media (max-width: 600px) {
  /* Override inline padding-top: 140px on #sd-dashboard */
  #sd-dashboard[style] {
    padding-top: 74px !important;
  }

  .sd-page {
    padding: 16px 14px !important;
  }

  /* Hero */
  .sd-hero-new {
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
  }

  .sd-hero-title-new {
    font-size: 24px !important;
    line-height: 1.2;
  }

  .sd-hero-subtitle-new {
    font-size: 14px;
    margin-top: 6px;
  }

  /* Action buttons — full width stack */
  .sd-action-bar {
    padding: 0 !important;
    flex-direction: column !important;
    gap: 8px !important;
  }

  .sd-action-btn {
    width: 100% !important;
    min-width: unset !important;
    flex: unset !important;
    font-size: 16px !important;
    padding: 12px 16px !important;
    justify-content: flex-start !important;
  }

  /* Stats grid — 2 columns on phone */
  .sd-stats-achievements {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px;
  }

  .sd-stat-tile {
    padding: 14px 10px;
    min-height: 80px;
  }

  /* Grade tabs — scroll horizontally, don't wrap */
  .sd-grade-tabs {
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .sd-grade-tabs-container {
    flex-wrap: nowrap !important;
    width: max-content;
  }

  .sd-grade-tab {
    padding: 8px 16px !important;
    font-size: 13px !important;
    white-space: nowrap;
  }

  /* Word list cards — single column, full width */
  .sd-lists-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }

  #sd-assignments-page {
    min-width: 0;
    max-width: 100%;
    overflow-x: hidden;
  }

  #sd-assignments-page h1,
  #sd-assignments-page .sd-assignments-title {
    font-size: 1.5rem !important;
    line-height: 1.25 !important;
    margin-bottom: 16px !important;
    overflow-wrap: anywhere;
  }

  #sd-assignments-page .sd-assignment-tabs {
    width: 100% !important;
    max-width: 100% !important;
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
    border-radius: 16px !important;
    box-sizing: border-box !important;
  }

  #sd-assignments-page .sd-tab-pill {
    width: 100% !important;
    padding: 10px 10px !important;
    font-size: 13px !important;
    min-height: 44px !important;
    justify-content: center !important;
    box-sizing: border-box !important;
  }

  .recommended-card {
    min-height: unset !important;
  }

  /* Word list card text — all key elements at 16px on phone */
  .card-main-title           { font-size: 16px !important; }
  .card-mastered-percentage  { font-size: 16px !important; }
  .card-stars-line,
  .cs-metric,
  .cs-metric strong          { font-size: 16px !important; }
  .sd-level-label            { font-size: 16px !important; }
  .btn-practice-full         { font-size: 16px !important; }

  /* Slider cards */
  .sd-dual-row-grid-slider {
    grid-template-columns: 1fr !important;
    grid-auto-columns: minmax(0, 1fr) !important;
  }

  .sd-dual-row-grid-slider .recommended-card {
    width: 100% !important;
    min-width: 0 !important;
  }

  /* Stat tiles — compact for 2-col on 412px */
  .sd-stat-tile {
    padding: 12px 8px !important;
    min-height: 80px !important;
    gap: 6px !important;
  }

  .sd-stat-value,
  .sd-achievement-streak .sd-stat-value,
  .sd-achievement-stars .sd-stat-value,
  .sd-achievement-activities .sd-stat-value {
    font-size: 24px !important;
    line-height: 1 !important;
  }

  .sd-stat-label,
  .sd-achievement-streak .sd-stat-label,
  .sd-achievement-stars .sd-stat-label,
  .sd-achievement-activities .sd-stat-label {
    font-size: 9px !important;
    letter-spacing: 0 !important;
    text-align: center !important;
    word-break: break-word !important;
    white-space: normal !important;
    line-height: 1.2 !important;
  }

  .sd-stat-icon,
  .sd-achievement-streak .sd-stat-icon,
  .sd-achievement-stars .sd-stat-icon,
  .sd-achievement-activities .sd-stat-icon {
    width: 32px !important;
    height: 32px !important;
    font-size: 16px !important;
  }

  .sd-achievement-streak,
  .sd-achievement-stars,
  .sd-achievement-activities {
    padding: 12px 8px !important;
    min-height: 80px !important;
    gap: 6px !important;
    border-radius: 14px !important;
  }

  /* Flashcards & Shield cards */
  .sd-achievement-card {
    padding: 14px 10px !important;
    border-radius: 14px !important;
    min-height: 80px !important;
    gap: 6px !important;
  }

  .sd-achievement-flashcards,
  .sd-achievement-shield {
    padding: 12px 8px !important;
    border-radius: 14px !important;
    min-height: 80px !important;
  }

  .sd-achievement-label {
    font-size: 9px !important;
    letter-spacing: 0 !important;
    word-break: break-word !important;
    text-align: center !important;
  }

  .sd-flashcards-total-value,
  .sd-shield-total-value {
    font-size: 26px !important;
  }

  .sd-stars-shields-num {
    font-size: 20px !important;
  }

  .sd-stars-shields-lbl {
    font-size: 9px;
    letter-spacing: 0;
  }

  .sd-stat-icon {
    width: 32px !important;
    height: 32px !important;
    font-size: 18px !important;
  }
}

/* ============================================
   Full-page loader (until all 8 cards are ready)
   ============================================ */

.sd-page-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(160deg, rgba(229, 228, 250, 0.92), rgba(196, 181, 253, 0.88));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.sd-page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.sd-page-loader-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  min-width: min(320px, 90vw);
  padding: 32px 36px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(124, 106, 170, 0.16);
  box-shadow: 0 18px 50px rgba(79, 60, 134, 0.18);
  text-align: center;
}

.sd-page-loader-orb {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 3px solid rgba(124, 106, 170, 0.18);
  border-top-color: #f16434;
  border-right-color: #4f3c86;
  animation: sd-spin 0.85s linear infinite;
  box-shadow: 0 0 20px rgba(241, 100, 52, 0.2);
}

.sd-page-loader-title {
  margin: 4px 0 0;
  color: #4f3c86;
  font-size: 17px;
  font-weight: 800;
}

.sd-page-loader-sub {
  margin: 0;
  color: #7c6aaa;
  font-size: 13px;
  font-weight: 600;
}

.sd-lists-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 180px;
  width: 100%;
  padding: 36px 24px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.sd-lists-loader-orb {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.28);
  border-top-color: #ffe66d;
  border-right-color: #c4b5fd;
  animation: sd-spin 0.85s linear infinite;
  box-shadow: 0 0 18px rgba(255, 230, 109, 0.35);
}

.sd-lists-loader-text {
  margin: 0;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-shadow: 0 1px 8px rgba(79, 60, 134, 0.35);
}

@keyframes sd-spin {
  to { transform: rotate(360deg); }
}