:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-highlight: rgba(255, 255, 255, 0.2);

  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.25);

  --status-unstarted: #64748b;
  --status-unstarted-bg: rgba(100, 116, 139, 0.2);
  --status-learning: #f59e0b;
  --status-learning-bg: rgba(245, 158, 11, 0.2);
  --status-mastered: #10b981;
  --status-mastered-bg: rgba(16, 185, 129, 0.2);

  --level-associate: #10b981;
  --level-associate-bg: rgba(16, 185, 129, 0.15);
  --level-em1: #f97316;
  --level-em1-bg: rgba(249, 115, 22, 0.15);
  --level-em2: #ef4444;
  --level-em2-bg: rgba(239, 68, 68, 0.15);
  --level-seniorem: #a855f7;
  --level-seniorem-bg: rgba(168, 85, 247, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.35);
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --border-highlight: #cbd5e1;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 60px; /* space for mobile nav */
}

@media (min-width: 769px) {
  body {
    padding-bottom: 0;
  }
}

/* App Header */
header.app-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);

  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  box-shadow: 0 0 15px var(--accent-glow);
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-text p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Framework Selector Dropdown */
.framework-select-wrap {
  position: relative;
}

.framework-select {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search-box {
  position: relative;
  min-width: 220px;
}

.search-box input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}

.search-box input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.btn-icon-text {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.btn-icon-text:hover {
  background: var(--border-highlight);
}

/* Navigation Tabs */
.view-tabs {
  display: flex;
  background: var(--bg-primary);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.45rem 0.85rem;
  font-size: 0.825rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.tab-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

/* Container */
.main-container {
  flex: 1;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Progress Overview Bar */
.progress-summary-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.progress-summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.progress-title {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.progress-stats-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-unstarted { background: var(--status-unstarted); }
.dot-learning { background: var(--status-learning); }
.dot-mastered { background: var(--status-mastered); }

.overall-progress-bar-bg {
  height: 10px;
  background: var(--bg-primary);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
}

.progress-fill-mastered {
  background: var(--status-mastered);
  transition: width 0.3s ease;
}

.progress-fill-learning {
  background: var(--status-learning);
  transition: width 0.3s ease;
}

/* Filters Bar */
.filters-bar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.85rem 1.15rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-right: 0.2rem;
}

.filter-chip {
  padding: 0.3rem 0.65rem;
  border-radius: 20px;
  font-size: 0.775rem;
  font-weight: 600;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-chip:hover {
  border-color: var(--border-highlight);
  color: var(--text-primary);
}

.filter-chip.active {
  background: var(--accent-primary);
  color: #fff;
}

.filter-chip.level-associate.active { background: var(--level-associate); }
.filter-chip.level-em1.active { background: var(--level-em1); }
.filter-chip.level-em2.active { background: var(--level-em2); }
.filter-chip.level-seniorem.active { background: var(--level-seniorem); }

.filter-chip.status-learning.active { background: var(--status-learning); }
.filter-chip.status-mastered.active { background: var(--status-mastered); }

/* Matrix View Layout */
.matrix-container {
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.matrix-grid {
  display: grid;
  grid-template-columns: 200px repeat(4, minmax(250px, 1fr));
  gap: 0.85rem;
  min-width: 1100px;
}

.matrix-header-cell {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.85rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.matrix-header-cell.level-associate { border-top: 4px solid var(--level-associate); }
.matrix-header-cell.level-em1 { border-top: 4px solid var(--level-em1); }
.matrix-header-cell.level-em2 { border-top: 4px solid var(--level-em2); }
.matrix-header-cell.level-seniorem { border-top: 4px solid var(--level-seniorem); }

.matrix-pillar-cell {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.85rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.matrix-cell {
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 120px;
}

/* Card Item Styling */
.card-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  position: relative;
}

.card-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--text-muted);
}

.card-item.level-associate::before { background: var(--level-associate); }
.card-item.level-em1::before { background: var(--level-em1); }
.card-item.level-em2::before { background: var(--level-em2); }
.card-item.level-seniorem::before { background: var(--level-seniorem); }

.card-item.status-learning { border-right: 4px solid var(--status-learning); }
.card-item.status-mastered { border-right: 4px solid var(--status-mastered); }

.card-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.status-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 12px;
  text-transform: uppercase;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.status-badge.unstarted { background: var(--status-unstarted-bg); color: var(--status-unstarted); }
.status-badge.learning { background: var(--status-learning-bg); color: var(--status-learning); }
.status-badge.mastered { background: var(--status-mastered-bg); color: var(--status-mastered); }

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  font-size: 0.725rem;
}

.badge {
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-associate { background: var(--level-associate-bg); color: var(--level-associate); }
.badge-em1 { background: var(--level-em1-bg); color: var(--level-em1); }
.badge-em2 { background: var(--level-em2-bg); color: var(--level-em2); }
.badge-seniorem { background: var(--level-seniorem-bg); color: var(--level-seniorem); }
.badge-pillar { background: var(--bg-tertiary); color: var(--text-secondary); }

/* Quick Status Toggle Buttons on Card */
.card-actions-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.status-toggle-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

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

.status-toggle-btn.active-learning {
  background: var(--status-learning-bg);
  color: var(--status-learning);
  border-color: var(--status-learning);
}

.status-toggle-btn.active-mastered {
  background: var(--status-mastered-bg);
  color: var(--status-mastered);
  border-color: var(--status-mastered);
}

/* Scheduler / What's Next View */
.scheduler-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.scheduler-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.scheduler-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.scheduler-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

/* Comments & Notes Section in Modal */
.notes-section {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.notes-title {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.note-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.note-textarea {
  width: 100%;
  min-height: 80px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 0.75rem;
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  resize: vertical;
}

.note-textarea:focus {
  border-color: var(--accent-primary);
}

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

.note-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.note-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.725rem;
  color: var(--text-muted);
}

.note-content {
  font-size: 0.875rem;
  color: var(--text-primary);
  white-space: pre-wrap;
}

/* Modal Drawer */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

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

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform 0.2s ease;
  overflow: hidden;
}

.modal-overlay.active .modal-dialog {
  transform: translateY(0);
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg-primary);
}

.modal-header-info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.modal-badges {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  background: var(--bg-tertiary);
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  font-size: 0.9rem;
  line-height: 1.6;
}

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s;
}

.btn:hover { background: var(--border-highlight); }
.btn-primary { background: var(--accent-primary); color: #fff; border: none; }
.btn-primary:hover { background: var(--accent-primary-hover); }

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 0.4rem;
  z-index: 90;
  justify-content: space-around;
  backdrop-filter: blur(10px);
}

@media (max-width: 768px) {
  .mobile-bottom-nav {
    display: flex;
  }
  .search-box {
    width: 100%;
  }
  .filters-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .view-tabs {
    display: none; /* hidden on mobile header, available in bottom nav */
  }
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

.mobile-nav-item.active {
  color: var(--accent-primary);
}

.mobile-nav-icon {
  font-size: 1.1rem;
}