/* ========================================
   🔥 MODERN YOUTH-ORIENTED TRAINER REDESIGN
   Inspired by: Nike Training Club, Apple Fitness+, Peloton
   CACHE BUSTER: v2.0 - Safari Grid Fix with webkit prefixes
   ======================================== */

/* ========================================
   1. EXERCISE CARDS - BOLD & MODERN
   ======================================== */

.exercise-card {
  background: linear-gradient(135deg, #1a1a24 0%, #252535 100%) !important;
  border: 2px solid rgba(255, 107, 53, 0.15) !important;
  border-radius: 24px !important;
  padding: 32px !important;
  margin-bottom: 32px !important;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
}

/* Accent bar on left */
.exercise-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(180deg, var(--neon-orange), var(--neon-purple));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.exercise-card:hover::before {
  opacity: 1;
}

/* Hover effect - LIFT & GLOW */
.exercise-card:hover {
  transform: translateY(-8px) scale(1.02) !important;
  border-color: rgba(255, 107, 53, 0.5) !important;
  box-shadow: 
    0 20px 60px rgba(255, 107, 53, 0.3),
    0 0 80px rgba(255, 107, 53, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
}

/* ========================================
   2. EXERCISE HEADER - BOLD TYPOGRAPHY
   ======================================== */

.exercise-card .exercise-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid rgba(255, 107, 53, 0.2);
}

/* Exercise number - BIG & BOLD */
.exercise-card .exercise-number {
  width: 64px !important;
  height: 64px !important;
  background: linear-gradient(135deg, var(--neon-orange), var(--neon-purple)) !important;
  border-radius: 16px !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem !important;
  font-weight: 900 !important;
  color: #000 !important;
  flex-shrink: 0;
  box-shadow: 
    0 8px 24px rgba(255, 107, 53, 0.4),
    inset 0 2px 0 rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
}

.exercise-card:hover .exercise-number {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 
    0 12px 32px rgba(255, 107, 53, 0.6),
    inset 0 2px 0 rgba(255, 255, 255, 0.4);
}

/* Exercise name - HUGE & BOLD */
.exercise-card .exercise-info h3 {
  font-size: 2rem !important;
  font-weight: 900 !important;
  color: #ffffff !important;
  margin-bottom: 8px !important;
  letter-spacing: -0.5px !important;
  line-height: 1.2 !important;
  text-transform: uppercase;
}

/* Muscle group badge - COLORFUL */
.exercise-card .exercise-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.exercise-card .meta-badge {
  padding: 6px 14px !important;
  background: rgba(255, 107, 53, 0.15) !important;
  border: 2px solid rgba(255, 107, 53, 0.4) !important;
  border-radius: 12px !important;
  font-size: 0.75rem !important;
  font-weight: 700 !important;
  color: var(--neon-orange) !important;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.exercise-card:hover .meta-badge {
  background: rgba(255, 107, 53, 0.25) !important;
  border-color: rgba(255, 107, 53, 0.6) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

/* ========================================
   3. VIDEO CONTAINER - ALWAYS VISIBLE, STYLED
   ======================================== */

.exercise-card .video-container {
  margin: 24px 0 !important;
  border-radius: 20px !important;
  overflow: hidden !important;
  position: relative;
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.5),
    inset 0 0 0 2px rgba(255, 107, 53, 0.2) !important;
  max-height: none !important;
  opacity: 1 !important;
  transition: all 0.4s ease !important;
}

.exercise-card:hover .video-container {
  box-shadow: 
    0 16px 56px rgba(255, 107, 53, 0.3),
    inset 0 0 0 3px rgba(255, 107, 53, 0.4) !important;
  transform: scale(1.02);
}

.exercise-card .video-container video {
  width: 100% !important;
  height: auto !important;
  display: block !important;
  border-radius: 18px !important;
}

/* Video overlay gradient */
.exercise-card .video-container::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.exercise-card:hover .video-container::after {
  opacity: 1;
}

/* ========================================
   4. STATS - MODERN GRID
   ======================================== */

.exercise-card .exercise-stats {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: 16px !important;
  margin-top: 24px !important;
}

.exercise-card .stat-box {
  background: rgba(255, 107, 53, 0.08) !important;
  border: 2px solid rgba(255, 107, 53, 0.25) !important;
  border-radius: 16px !important;
  padding: 16px !important;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.exercise-card .stat-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.1), transparent);
  transition: left 0.5s ease;
}

.exercise-card:hover .stat-box::before {
  left: 100%;
}

.exercise-card:hover .stat-box {
  background: rgba(255, 107, 53, 0.12) !important;
  border-color: rgba(255, 107, 53, 0.4) !important;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.2);
}

.exercise-card .stat-label {
  font-size: 0.7rem !important;
  color: rgba(255, 255, 255, 0.6) !important;
  margin-bottom: 6px !important;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.exercise-card .stat-value {
  font-size: 1.5rem !important;
  font-weight: 900 !important;
  color: var(--neon-orange) !important;
  text-shadow: 0 0 20px rgba(255, 107, 53, 0.5);
}

/* ========================================
   5. DESCRIPTION - EXPANDABLE
   ======================================== */

.exercise-card .exercise-description {
  margin-top: 20px !important;
  padding: 20px !important;
  background: rgba(255, 107, 53, 0.05) !important;
  border-left: 4px solid var(--neon-orange) !important;
  border-radius: 12px !important;
  font-size: 0.95rem !important;
  color: rgba(255, 255, 255, 0.8) !important;
  line-height: 1.6 !important;
  max-height: none !important;
  opacity: 1 !important;
}

/* ========================================
   6. TABLET LAYOUT (768px - 1023px)
   ======================================== */

@media (min-width: 768px) and (max-width: 1023px) {
  /* TWO COLUMNS SIDE BY SIDE! */
  .exercise-list {
    display: -webkit-box !important;
    display: -ms-grid !important;
    display: grid !important;
    -ms-grid-columns: 1fr 20px 1fr !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
    -webkit-column-gap: 20px !important;
    column-gap: 20px !important;
    -webkit-row-gap: 20px !important;
    row-gap: 20px !important;
  }
  
  .exercise-card {
    padding: 24px !important;
    margin-bottom: 0 !important;
  }
  
  .exercise-card .exercise-number {
    width: 56px !important;
    height: 56px !important;
    font-size: 1.5rem !important;
  }
  
  .exercise-card .exercise-info h3 {
    font-size: 1.5rem !important;
  }
  
  .exercise-card .video-container {
    margin: 16px 0 !important;
  }
  
  .exercise-card .exercise-stats {
    gap: 12px !important;
  }
  
  .exercise-card .stat-box {
    padding: 12px !important;
  }
  
  .exercise-card .stat-value {
    font-size: 1.2rem !important;
  }
}

/* ========================================
   6.5. DESKTOP LAYOUT (1024px+)
   ======================================== */

@media (min-width: 1024px) {
  /* TWO COLUMNS ON DESKTOP TOO! */
  .exercise-list {
    display: -webkit-box !important;
    display: -ms-grid !important;
    display: grid !important;
    -ms-grid-columns: 1fr 20px 1fr !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 24px !important;
    -webkit-column-gap: 24px !important;
    column-gap: 24px !important;
    -webkit-row-gap: 24px !important;
    row-gap: 24px !important;
  }
  
  .exercise-card {
    margin-bottom: 0 !important;
  }
}

/* ========================================
   7. MOBILE LAYOUT (< 768px)
   ======================================== */

@media (max-width: 767px) {
  .exercise-card {
    padding: 20px !important;
    margin-bottom: 24px !important;
    border-radius: 20px !important;
  }
  
  .exercise-card .exercise-number {
    width: 48px !important;
    height: 48px !important;
    font-size: 1.3rem !important;
    border-radius: 12px !important;
  }
  
  .exercise-card .exercise-info h3 {
    font-size: 1.3rem !important;
  }
  
  .exercise-card .video-container {
    margin: 16px 0 !important;
    border-radius: 16px !important;
  }
  
  .exercise-card .exercise-stats {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  
  .exercise-card .stat-box {
    padding: 14px !important;
  }
}

/* ========================================
   8. MUSCLE GROUP COLORS
   ======================================== */

/* Chest - Orange */
.exercise-card[data-muscle="chest"] .exercise-number {
  background: linear-gradient(135deg, #ff6b35, #ff8c42) !important;
}

.exercise-card[data-muscle="chest"] .meta-badge {
  border-color: #ff6b35 !important;
  color: #ff6b35 !important;
}

/* Back - Blue */
.exercise-card[data-muscle="back"] .exercise-number {
  background: linear-gradient(135deg, #667eea, #764ba2) !important;
}

.exercise-card[data-muscle="back"] .meta-badge {
  border-color: #667eea !important;
  color: #667eea !important;
}

/* Legs - Purple */
.exercise-card[data-muscle="legs"] .exercise-number {
  background: linear-gradient(135deg, #764ba2, #a044ff) !important;
}

.exercise-card[data-muscle="legs"] .meta-badge {
  border-color: #764ba2 !important;
  color: #764ba2 !important;
}

/* Shoulders - Cyan */
.exercise-card[data-muscle="shoulders"] .exercise-number {
  background: linear-gradient(135deg, #4facfe, #00f2fe) !important;
}

.exercise-card[data-muscle="shoulders"] .meta-badge {
  border-color: #4facfe !important;
  color: #4facfe !important;
}

/* Arms - Pink */
.exercise-card[data-muscle="arms"] .exercise-number {
  background: linear-gradient(135deg, #f093fb, #f5576c) !important;
}

.exercise-card[data-muscle="arms"] .meta-badge {
  border-color: #f093fb !important;
  color: #f093fb !important;
}

/* Core - Green */
.exercise-card[data-muscle="core"] .exercise-number {
  background: linear-gradient(135deg, #43e97b, #38f9d7) !important;
}

.exercise-card[data-muscle="core"] .meta-badge {
  border-color: #43e97b !important;
  color: #43e97b !important;
}

/* ========================================
   9. ANIMATIONS
   ======================================== */

@keyframes cardEntrance {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.exercise-card {
  animation: cardEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.exercise-card:nth-child(1) { animation-delay: 0.1s; }
.exercise-card:nth-child(2) { animation-delay: 0.2s; }
.exercise-card:nth-child(3) { animation-delay: 0.3s; }
.exercise-card:nth-child(4) { animation-delay: 0.4s; }
.exercise-card:nth-child(5) { animation-delay: 0.5s; }
.exercise-card:nth-child(6) { animation-delay: 0.6s; }

/* ========================================
   10. SIDEBAR IMPROVEMENTS
   ======================================== */

.sidebar .card {
  background: linear-gradient(135deg, #1a1a24 0%, #252535 100%) !important;
  border: 2px solid rgba(255, 107, 53, 0.15) !important;
  border-radius: 24px !important;
  padding: 28px !important;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
}

.sidebar .card h2 {
  font-size: 1.5rem !important;
  font-weight: 900 !important;
  color: #ffffff !important;
  margin-bottom: 20px !important;
  text-transform: uppercase;
  letter-spacing: -0.5px;
}

/* Generate button - HUGE & BOLD */
#generate-plan-btn {
  padding: 20px 40px !important;
  font-size: 1.2rem !important;
  font-weight: 900 !important;
  background: linear-gradient(135deg, var(--neon-orange), var(--neon-purple)) !important;
  color: #000 !important;
  border: none !important;
  border-radius: 16px !important;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
  box-shadow: 
    0 8px 32px rgba(255, 107, 53, 0.5),
    inset 0 2px 0 rgba(255, 255, 255, 0.3) !important;
  position: relative;
  overflow: hidden;
}

#generate-plan-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

#generate-plan-btn:hover::before {
  width: 400px;
  height: 400px;
}

#generate-plan-btn:hover {
  transform: translateY(-4px) scale(1.05) !important;
  box-shadow: 
    0 16px 48px rgba(255, 107, 53, 0.7),
    inset 0 2px 0 rgba(255, 255, 255, 0.4) !important;
}

#generate-plan-btn:active {
  transform: translateY(-2px) scale(0.98) !important;
}

/* ========================================
   11. MOOD/SPLIT BUTTONS - MODERN
   ======================================== */

.mood-btn,
.split-btn,
.level-btn {
  padding: 14px 20px !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border: 2px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: 12px !important;
  color: rgba(255, 255, 255, 0.7) !important;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
  transition: all 0.3s ease !important;
  cursor: pointer;
}

.mood-btn:hover,
.split-btn:hover,
.level-btn:hover {
  background: rgba(255, 107, 53, 0.1) !important;
  border-color: rgba(255, 107, 53, 0.4) !important;
  color: var(--neon-orange) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.2);
}

.mood-btn.active,
.split-btn.active,
.level-btn.active {
  background: linear-gradient(135deg, var(--neon-orange), var(--neon-purple)) !important;
  border-color: transparent !important;
  color: #000 !important;
  box-shadow: 
    0 4px 16px rgba(255, 107, 53, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* ========================================
   12. SPACING IMPROVEMENTS
   ======================================== */

.exercise-list {
  margin-top: 32px !important;
}

.main-content {
  padding: 32px !important;
}

@media (max-width: 767px) {
  .main-content {
    padding: 20px !important;
  }
}