/* ==========================================================================
   Blue Security Ops - Exercise Engine Styles
   Interactive exercise types for course lessons
   ========================================================================== */

/* ==========================================================================
   1. Shared Styles
   ========================================================================== */

.exercise-container {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  margin: 2rem 0;
}

.exercise-container--inline {
  border-left: 4px solid var(--course-accent);
  border-radius: 8px;
  padding: 1.5rem;
  background: #fafafa;
}

.exercise-prompt {
  font-size: 1.125rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.exercise-btn {
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0.75rem 1.5rem;
  display: inline-block;
  margin-top: 1rem;
}

.exercise-btn--primary {
  background: var(--course-accent);
  color: #ffffff;
}

.exercise-btn--primary:hover {
  background: var(--course-accent-dark);
}

.exercise-error {
  color: #d97706;
  font-style: italic;
  padding: 1rem;
}

/* ==========================================================================
   2. Feedback
   ========================================================================== */

.exercise-feedback {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: 8px;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.exercise-feedback--correct {
  background: #dcfce7;
  border-left: 4px solid #22c55e;
}

.exercise-feedback--incorrect {
  background: #fffbeb;
  border-left: 4px solid #d97706;
}

.exercise-feedback__icon {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: bold;
  flex-shrink: 0;
}

.exercise-feedback--correct .exercise-feedback__icon {
  background: #22c55e;
  color: #ffffff;
}

.exercise-feedback--incorrect .exercise-feedback__icon {
  background: #d97706;
  color: #ffffff;
}

.exercise-feedback__text {
  flex: 1;
}

.exercise-feedback__detail {
  font-size: 0.9rem;
  color: #4b5563;
  margin-top: 0.5rem;
}

.exercise-feedback__explanation {
  font-size: 0.9rem;
  color: #4b5563;
  margin-top: 0.5rem;
}

/* ==========================================================================
   3. Toggle
   ========================================================================== */

.exercise-toggle {
  display: flex;
  background: #f3f4f6;
  border-radius: 9999px;
  padding: 4px;
  margin-bottom: 1.5rem;
  gap: 4px;
}

.exercise-toggle__btn {
  flex: 1;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: #4b5563;
  transition: all 0.2s;
}

.exercise-toggle__btn--active {
  background: #ffffff;
  color: #1f2937;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  font-weight: 600;
}

/* ==========================================================================
   4. Quiz Header
   ========================================================================== */

.exercise-quiz__header {
  padding: 1rem 1.5rem;
}

.exercise-quiz__progress-text {
  font-size: 0.875rem;
  color: #6b7280;
  margin-bottom: 0.5rem;
}

.exercise-quiz__progress-bar {
  background: #e5e7eb;
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}

.exercise-quiz__progress-fill {
  background: var(--course-accent);
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s ease;
}

.exercise-quiz__body {
  padding: 1.5rem;
}

/* ==========================================================================
   5. Results
   ========================================================================== */

.exercise-quiz__results {
  text-align: center;
  padding: 3rem 2rem;
  border-radius: 12px;
  animation: ex-results-fadein 0.5s ease;
}

.exercise-quiz__results--passed {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 40%, #f0fdfa 100%);
  border: 1px solid rgba(5, 150, 105, 0.15);
}

.exercise-quiz__results-emoji {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: 0.25rem;
  animation: ex-emoji-bounce 0.6s ease 0.3s both;
}

.exercise-score-ring {
  position: relative;
  display: inline-block;
  margin-bottom: 1.5rem;
}

.exercise-score-ring__text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.exercise-score-ring__number {
  font-size: 2.25rem;
  font-weight: 800;
  color: #1f2937;
  line-height: 1;
}

.exercise-score-ring__label {
  font-size: 0.875rem;
  color: #6b7280;
  margin-top: 0.25rem;
}

.exercise-quiz__message {
  margin-bottom: 1.5rem;
}

.exercise-quiz__message-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.exercise-quiz__results--passed .exercise-quiz__message-title {
  color: #059669;
}

.exercise-quiz__message-detail {
  color: #6b7280;
  font-size: 1.05rem;
  line-height: 1.5;
}

.exercise-quiz__results-actions {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.exercise-quiz__results-actions .exercise-btn {
  min-width: 200px;
}

.exercise-btn--celebrate {
  font-size: 1.1rem;
  padding: 0.875rem 2rem;
}

.exercise-btn--secondary {
  background: #f3f4f6;
  color: #374151;
}

.exercise-btn--secondary:hover {
  background: #e5e7eb;
}

.exercise-btn--ghost {
  background: transparent;
  color: #6b7280;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
}

.exercise-btn--ghost:hover {
  color: #374151;
  background: rgba(0, 0, 0, 0.04);
}

/* ==========================================================================
   6. MCQ (Multiple Choice Question)
   ========================================================================== */

.exercise-mcq__options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.exercise-mcq__option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  background: #ffffff;
}

.exercise-mcq__option:hover {
  border-color: var(--course-accent);
  background: var(--course-accent-light);
}

.exercise-mcq__option--selected {
  border-color: var(--course-accent);
  background: var(--course-accent-light);
}

.exercise-mcq__option--correct {
  border-color: #22c55e;
  background: #dcfce7;
}

.exercise-mcq__option--incorrect {
  border-color: #d97706;
  background: #fffbeb;
}

.exercise-mcq__option input[type="radio"] {
  accent-color: var(--course-accent);
}

/* ==========================================================================
   7. Match (Card-Stacking)
   ========================================================================== */

.exercise-match__targets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.exercise-match__target {
  display: flex;
  flex-direction: column;
}

.exercise-match__hint {
  font-size: 0.85rem;
  color: #9ca3af;
  margin-top: -1rem;
  margin-bottom: 1rem;
}

/* ==========================================================================
   8. Order (Card-Stacking Pipeline)
   ========================================================================== */

.exercise-order__pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.exercise-order__slot {
  flex: 1 1 120px;
  min-width: 100px;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   9. Build (Command Builder)
   ========================================================================== */

.exercise-build__cmdline {
  background: #1a1a2e;
  color: #e2e8f0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  min-height: 3rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.exercise-build__cursor {
  color: #22c55e;
  font-weight: 700;
}

.exercise-build__fragment {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
}

.exercise-build__fragment:hover {
  background: rgba(255, 255, 255, 0.2);
}

.exercise-build__cmdline--correct {
  outline: 2px solid #22c55e;
}

.exercise-build__cmdline--incorrect {
  outline: 2px solid #d97706;
}

.exercise-build__pool {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.exercise-build__chip {
  padding: 0.5rem 0.75rem;
  border: 2px solid #e5e7eb;
  border-radius: 9999px;
  cursor: pointer;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  background: #ffffff;
  transition: all 0.2s;
}

.exercise-build__chip:hover {
  border-color: var(--course-accent);
}

.exercise-build__chip--used {
  opacity: 0.3;
  pointer-events: none;
}

/* ==========================================================================
   10. Fix (Bug Fix)
   ========================================================================== */

.exercise-fix__code {
  background: #1a1a2e;
  color: #e2e8f0;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  font-size: 1.1rem;
  line-height: 1.8;
}

.exercise-fix__segment {
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  transition: background 0.2s;
}

.exercise-fix__segment:hover {
  background: rgba(255, 255, 255, 0.15);
}

.exercise-fix__segment--selected {
  background: rgba(59, 130, 246, 0.3);
  outline: 2px solid #3b82f6;
}

.exercise-fix__segment--bug {
  background: rgba(239, 68, 68, 0.3);
  outline: 2px dashed #ef4444;
}

.exercise-fix__input {
  background: #0d1117;
  color: #e2e8f0;
  border: 2px solid #3b82f6;
  border-radius: 4px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  padding: 0.2rem 0.5rem;
  font-size: inherit;
  outline: none;
}

.exercise-fix__input--correct {
  border-color: #22c55e;
}

.exercise-fix__input--incorrect {
  border-color: #d97706;
}

.exercise-fix__hint {
  color: #9ca3af;
  font-size: 0.875rem;
  margin-top: 0.75rem;
}

/* ==========================================================================
   11. Speed (Speed Round)
   ========================================================================== */

.exercise-speed__container {
  position: relative;
}

.exercise-speed__streak {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  z-index: 1;
}

.exercise-speed__streak-icon {
  font-size: 1.25rem;
}

.exercise-speed__streak-count {
  font-weight: 700;
  color: var(--course-accent);
}

.exercise-speed__streak--pulse {
  animation: ex-pulse 0.3s ease;
}

.exercise-speed__timer {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.exercise-speed__timer-fill {
  height: 100%;
  background: var(--course-accent);
  border-radius: 3px;
}

.exercise-speed__card {
  text-align: center;
  padding: 2rem 1rem;
}

.exercise-speed__card--correct {
  animation: ex-flash-green 0.3s;
}

.exercise-speed__card--incorrect {
  animation: ex-flash-red 0.3s;
}

.exercise-speed__question {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  margin-bottom: 1.5rem;
  color: #1f2937;
}

.exercise-speed__options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  max-width: 500px;
  margin: 0 auto;
}

.exercise-speed__option {
  padding: 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  background: #ffffff;
  transition: all 0.15s;
}

.exercise-speed__option:hover {
  border-color: var(--course-accent);
}

.exercise-speed__option:disabled {
  cursor: default;
  opacity: 1;
}

.exercise-speed__option--correct {
  border-color: #22c55e;
  background: #dcfce7;
}

.exercise-speed__option--incorrect {
  border-color: #d97706;
  background: #fffbeb;
}

.exercise-speed__progress {
  text-align: center;
  color: #9ca3af;
  font-size: 0.875rem;
  margin-top: 1rem;
}

.exercise-speed__results {
  text-align: center;
}

.exercise-speed__stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1.5rem;
}

.exercise-speed__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.exercise-speed__stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--course-accent);
}

.exercise-speed__stat-label {
  font-size: 0.875rem;
  color: #9ca3af;
  margin-top: 0.25rem;
}

/* ==========================================================================
   12. Classify (Card-Stacking Zones)
   ========================================================================== */

.exercise-classify__zones {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.exercise-classify__zone {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ==========================================================================
   13. Terminal Challenge
   ========================================================================== */

.exercise-terminal__wrapper {
  border-radius: 8px;
  overflow: hidden;
  margin: 1rem 0;
}

.exercise-terminal__terminal {
  min-height: 200px;
}

.exercise-terminal__note {
  padding: 1rem;
  background: var(--course-accent-light);
  color: var(--course-accent-dark);
  border-radius: 8px;
  font-size: 0.9rem;
}

/* ==========================================================================
   14. Confetti / Congrats Popup
   ========================================================================== */

.exercise-congrats {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.exercise-congrats--visible {
  opacity: 1;
  visibility: visible;
}

.exercise-congrats__card {
  background: #ffffff;
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  max-width: 400px;
  width: 90%;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.exercise-congrats--visible .exercise-congrats__card {
  transform: scale(1);
}

.exercise-congrats__emoji {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  display: block;
}

.exercise-congrats__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.exercise-congrats__message {
  color: #6b7280;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.exercise-congrats__button {
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0.75rem 1.5rem;
  display: inline-block;
  background: var(--course-accent);
  color: #ffffff;
}

.exercise-congrats__button:hover {
  background: var(--course-accent-dark);
}

/* ==========================================================================
   15. Shared Card Styles (Match, Classify, Order)
   ========================================================================== */

/* --- Base card --- */
.exercise-card {
  background: #ffffff;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  padding: 0.75rem 1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  user-select: none;
  cursor: grab;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, background 0.2s;
  font-size: 0.95rem;
  line-height: 1.4;
}

.exercise-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  transform: scale(1.02);
}

.exercise-card:active {
  cursor: grabbing;
}

/* --- Card variants --- */

/* Term card (match: code text in hand) */
.exercise-card--term {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  background: #f0fdfa;
  border-color: var(--course-accent);
  color: #134e4a;
}

.exercise-card--term:hover {
  background: var(--course-accent-light);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.15);
}

/* Item card (classify/order: code text in hand) */
.exercise-card--item {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Target card (match: definition drop zone) */
.exercise-card--target {
  border-style: dashed;
  border-color: #d1d5db;
  background: #f9fafb;
  color: #4b5563;
  cursor: pointer;
  min-height: 3.5rem;
  display: flex;
  align-items: center;
}

.exercise-card--target:hover {
  border-color: var(--course-accent);
  background: #f0fdfa;
}

/* Category header card (classify: colored zone header) */
.exercise-card--category {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.95rem;
  text-align: center;
  padding: 0.75rem;
  border-style: solid;
}

.exercise-card--category-count {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.7;
  margin-left: 0.5rem;
}

/* Slot placeholder card (order: numbered pipeline position) */
.exercise-card--slot {
  border-style: dashed;
  border-color: #d1d5db;
  background: #f9fafb;
  color: #9ca3af;
  cursor: pointer;
  text-align: center;
  min-height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.exercise-card--slot:hover {
  border-color: var(--course-accent);
  background: #f0fdfa;
}

.exercise-card__slot-num {
  font-weight: 700;
  font-size: 1rem;
  color: #9ca3af;
}

.exercise-card__slot-label {
  font-size: 0.8rem;
}

/* --- Card states --- */

.exercise-card--selected {
  border-color: var(--course-accent);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.25), 0 4px 12px rgba(13, 148, 136, 0.15);
  transform: scale(1.03);
}

.exercise-card--dragging {
  opacity: 0.3;
  border-style: dashed;
  transform: scale(1);
}

.exercise-card--placed {
  opacity: 0.3;
  pointer-events: none;
  transform: scale(1);
  box-shadow: none;
}

.exercise-card--dragover {
  border-color: var(--course-accent) !important;
  border-style: solid !important;
  background: var(--course-accent-light) !important;
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.2);
  transform: scale(1.03);
}

.exercise-card--correct {
  border-color: #22c55e !important;
  background: #dcfce7 !important;
}

.exercise-card--incorrect {
  border-color: #d97706 !important;
  background: #fffbeb !important;
}

/* --- Card stack --- */

.exercise-card-stack {
  position: relative;
  min-height: 0;
}

.exercise-card-stack .exercise-card {
  animation: ex-card-place 0.2s ease;
}

.exercise-card-stack .exercise-card + .exercise-card {
  margin-top: -6px;
}

.exercise-card-stack .exercise-card {
  cursor: pointer;
}

.exercise-card-stack .exercise-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

/* --- Ghost (floating drag card) --- */

.exercise-card-ghost {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 16px 32px rgba(0,0,0,0.2), 0 4px 8px rgba(0,0,0,0.1);
  transform: translate(-50%, -50%) rotate(-2deg) scale(1.06);
  opacity: 0.95;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  background: #1f2937;
  color: #ffffff;
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Hand area (shared across match, classify, order) --- */

.exercise-hand {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1rem;
  background: #f9fafb;
  border: 2px dashed #e5e7eb;
  border-radius: 10px;
  min-height: 3rem;
}

.exercise-hand__label {
  width: 100%;
  font-size: 0.8rem;
  color: #9ca3af;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

/* ==========================================================================
   16. Animations
   ========================================================================== */

@keyframes ex-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.3); }
}

@keyframes ex-flash-green {
  0%, 100% { background-color: transparent; }
  50% { background-color: rgba(34, 197, 94, 0.15); }
}

@keyframes ex-flash-red {
  0%, 100% { background-color: transparent; }
  50% { background-color: rgba(217, 119, 6, 0.15); }
}

@keyframes ex-results-fadein {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ex-emoji-bounce {
  0% { opacity: 0; transform: scale(0.3); }
  50% { opacity: 1; transform: scale(1.15); }
  100% { transform: scale(1); }
}

@keyframes ex-card-place {
  from { transform: scale(1.08); opacity: 0.7; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes ex-card-return {
  from { transform: scale(0.92); opacity: 0.5; }
  to { transform: scale(1); opacity: 1; }
}

.exercise-card--returning {
  animation: ex-card-return 0.2s ease;
}

/* ==========================================================================
   16. Responsive (max-width: 640px)
   ========================================================================== */

@media (max-width: 640px) {
  .exercise-match__targets {
    grid-template-columns: 1fr;
  }

  .exercise-classify__zones {
    flex-direction: column;
  }

  .exercise-order__pipeline {
    flex-direction: column;
  }

  .exercise-order__slot {
    flex: 1 1 auto;
  }

  .exercise-speed__options {
    grid-template-columns: 1fr;
  }

  .exercise-speed__stats {
    flex-direction: column;
    gap: 1rem;
  }

  .exercise-speed__question {
    font-size: 1.25rem;
  }

  .exercise-toggle {
    flex-direction: column;
    border-radius: 8px;
  }

  .exercise-toggle__btn {
    border-radius: 6px;
  }

  .exercise-congrats__card {
    padding: 2rem 1.5rem;
  }
}