/**
 * Formation Panel Styles
 * Left slide panel for learning tracks
 */

@import url('./design-tokens.css');

/* ============================================
   BACKDROP
   ============================================ */

.formation-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  transition: opacity var(--duration-fast) ease;
}

.formation-panel.open ~ .formation-backdrop,
.formation-backdrop:has(+ .formation-panel.open) {
  opacity: 1;
}

/* ============================================
   PANEL
   ============================================ */

.formation-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 420px;
  max-width: 90vw;
  height: 100vh;
  background: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  z-index: var(--z-modal);
  transform: translateX(-100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.formation-panel.open {
  transform: translateX(0);
}

.formation-panel-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

/* ============================================
   HEADER
   ============================================ */

.formation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.3);
}

.formation-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: #fff;
  margin: 0;
}

.formation-icon {
  font-size: var(--text-xl);
}

.formation-close {
  width: 36px;
  height: 36px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: #888;
  font-size: var(--text-xl);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.formation-close:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* ============================================
   TRACKS LIST
   ============================================ */

.formation-tracks {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.track-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
}

.track-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--track-color, #666);
  transform: translateY(-2px);
}

.track-card-header {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.track-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  font-size: var(--text-xl);
  color: var(--track-color, #666);
  flex-shrink: 0;
}

.track-info {
  flex: 1;
  min-width: 0;
}

.track-name {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: #fff;
  margin: 0 0 var(--space-2xs);
}

.track-desc {
  font-size: var(--text-xs);
  color: #888;
  margin: 0;
  line-height: 1.4;
}

.track-meta {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  font-size: var(--text-xs);
  color: #666;
}

.track-difficulty {
  text-transform: capitalize;
  padding: var(--space-2xs) var(--space-sm);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xs);
}

.track-progress {
  margin-bottom: var(--space-sm);
}

.progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xs);
  overflow: hidden;
  margin-bottom: var(--space-xs);
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-xs);
  transition: width var(--duration-slow) ease;
}

.progress-label {
  font-size: var(--text-2xs);
  color: #666;
}

.track-start-btn {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: #fff;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.track-start-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
}

/* ============================================
   TRACK DETAIL
   ============================================ */

.formation-detail {
  padding: var(--space-lg);
}

.formation-back {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-sm);
  border: none;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  color: #888;
  font-size: var(--text-sm);
  cursor: pointer;
  margin-bottom: var(--space-lg);
  transition: all var(--duration-fast);
}

.formation-back:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.track-detail-header {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
}

.track-icon-large {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
  color: var(--track-color);
  flex-shrink: 0;
}

.track-name-large {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: #fff;
  margin: 0 0 var(--space-sm);
}

.track-desc-detail {
  font-size: var(--text-sm);
  color: #888;
  margin: 0 0 var(--space-sm);
  line-height: 1.5;
}

.track-stats {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-xs);
  color: #666;
}

.difficulty-badge {
  padding: var(--space-2xs) var(--space-sm);
  background: var(--track-color);
  border-radius: var(--radius-xs);
  color: #fff;
  text-transform: capitalize;
}

/* ============================================
   MODULES LIST
   ============================================ */

.modules-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: #888;
  margin: 0 0 var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modules-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.module-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  animation: moduleSlideIn var(--duration-normal) ease backwards;
}

@keyframes moduleSlideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
}

.module-card:hover:not(.locked) {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--track-color, #666);
}

.module-card.locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.module-card.completed {
  border-color: rgba(74, 222, 128, 0.3);
}

.module-card.next {
  border-color: var(--track-color);
  background: rgba(255, 255, 255, 0.04);
}

.module-number {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: #666;
  flex-shrink: 0;
}

.module-card.completed .module-number {
  background: rgba(74, 222, 128, 0.2);
  color: #4ade80;
}

.module-card.next .module-number {
  background: var(--track-color);
  color: #fff;
}

.module-info {
  flex: 1;
  min-width: 0;
}

.module-name {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: #fff;
  margin: 0 0 var(--space-2xs);
}

.module-desc {
  font-size: var(--text-xs);
  color: #888;
  margin: 0 0 var(--space-sm);
  line-height: 1.4;
}

.module-meta {
  display: flex;
  gap: var(--space-sm);
  font-size: var(--text-2xs);
  color: #666;
}

.module-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.status-icon {
  font-size: var(--text-lg);
}

.status-icon.completed {
  color: #4ade80;
}

.status-icon.locked {
  color: #666;
}

.status-badge.next {
  padding: var(--space-2xs) var(--space-sm);
  background: var(--track-color);
  border-radius: var(--radius-xs);
  font-size: var(--text-2xs);
  color: #fff;
  font-weight: var(--font-medium);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 480px) {
  .formation-panel {
    width: 100%;
  }

  .track-card-header {
    flex-direction: column;
  }

  .track-icon {
    width: 40px;
    height: 40px;
    font-size: var(--text-lg);
  }

  .track-detail-header {
    flex-direction: column;
    text-align: center;
  }

  .track-icon-large {
    margin: 0 auto;
  }
}