/* Human Body Explorer — Premium Styles */

/* Hero Controls */
.hero-controls { display: flex; gap: 12px; justify-content: center; margin-top: var(--space-3); flex-wrap: wrap; }
.ctrl-pill {
  padding: 8px 18px; border-radius: var(--radius-full); background: var(--color-surface);
  border: 1px solid var(--color-border); color: var(--color-text); cursor: pointer;
  transition: all 0.3s; font-size: 0.85rem; display: flex; align-items: center; gap: 6px;
}
.ctrl-pill:hover { border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.ctrl-pill.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pulse-dot { display: inline-block; transition: transform 0.3s; }
.pulse-dot.beating { animation: heartPulse 0.3s ease; }
@keyframes heartPulse { 0% { transform: scale(1); } 50% { transform: scale(1.4); } 100% { transform: scale(1); } }
.pulse-count { font-size: 0.7rem; opacity: 0.6; margin-left: 4px; }

/* Tabs */
.body-tabs { display: flex; gap: 4px; overflow-x: auto; padding: 6px; }
.body-tab-btn {
  flex: 1; min-width: 120px; padding: 10px 14px; font-size: 0.8rem; border-radius: var(--radius-md);
  background: transparent; border: 1px solid var(--color-border); color: var(--color-text);
  cursor: pointer; transition: all 0.25s; white-space: nowrap;
}
.body-tab-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.body-tab-btn:hover:not(.active) { border-color: var(--color-primary); background: rgba(139, 92, 246, 0.1); }
.body-tab-content.hidden { display: none !important; }

/* Systems Grid */
.systems-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.system-card {
  padding: 16px 12px; text-align: center; border-radius: var(--radius-lg); cursor: pointer;
  background: var(--color-surface); border: 2px solid var(--color-border); transition: all 0.3s;
  position: relative; overflow: hidden;
}
.system-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--sys-color); transition: height 0.3s;
}
.system-card:hover { transform: translateY(-4px); border-color: var(--sys-color); box-shadow: 0 8px 25px rgba(0,0,0,0.2); }
.system-card:hover::before { height: 5px; }
.system-card.active { border-color: var(--sys-color); background: rgba(139, 92, 246, 0.1); }
.system-card.active::before { height: 5px; }
.sys-emoji { font-size: 2rem; display: block; margin-bottom: 6px; }
.sys-name { font-weight: 700; font-size: 0.85rem; }
.sys-count { font-size: 0.7rem; color: var(--color-text-secondary); margin-top: 4px; }

/* Section Title */
.section-title { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-3); }

/* Organs Grid */
.organs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
.organ-card {
  padding: 14px 10px; text-align: center; border-radius: var(--radius-md); cursor: pointer;
  border: 1px solid var(--color-border); transition: all 0.3s; position: relative;
}
.organ-card:hover { transform: translateY(-3px); border-color: var(--color-accent); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.organ-card.selected { border-color: var(--color-primary); background: rgba(139, 92, 246, 0.15); box-shadow: 0 0 15px rgba(139, 92, 246, 0.3); }
.organ-card.xray { filter: hue-rotate(180deg) brightness(1.2); border-color: #22d3ee; }
.organ-emoji { font-size: 1.8rem; display: block; margin-bottom: 4px; }
.organ-name { font-weight: 600; font-size: 0.8rem; display: block; }
.organ-weight { font-size: 0.65rem; color: var(--color-text-secondary); }

/* X-Ray Mode */
.xray-mode .organ-card { background: rgba(0, 200, 255, 0.05) !important; border-color: rgba(34, 211, 238, 0.3) !important; }
.xray-mode .organ-emoji { filter: grayscale(1) brightness(2); }

/* Organ Detail Panel */
.organ-detail-panel { min-height: 200px; }
.detail-header { display: flex; align-items: center; gap: 16px; margin-bottom: var(--space-4); padding-bottom: var(--space-3); border-bottom: 2px solid var(--organ-color, var(--color-border)); }
.detail-emoji { font-size: 3rem; }
.detail-name { font-size: 1.5rem; font-weight: 900; margin: 0; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.detail-system { font-size: 0.8rem; color: var(--color-text-secondary); }
.detail-desc { font-size: 0.9rem; line-height: 1.6; color: var(--color-text-secondary); margin-bottom: var(--space-4); }
.detail-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: var(--space-4); }
.stat-card { text-align: center; padding: 12px 8px; background: var(--color-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.stat-icon { font-size: 1.2rem; display: block; margin-bottom: 4px; }
.stat-val { font-weight: 700; font-size: 0.8rem; display: block; color: var(--color-primary); }
.stat-lbl { font-size: 0.65rem; color: var(--color-text-secondary); text-transform: uppercase; }
.detail-section { margin-bottom: var(--space-3); }
.detail-section h4 { font-size: 0.9rem; margin-bottom: 8px; }
.disease-tags, .nutrient-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.disease-tag { padding: 4px 10px; background: rgba(239, 68, 68, 0.15); color: #ef4444; border-radius: var(--radius-full); font-size: 0.75rem; }
.nutrient-tag { padding: 4px 10px; background: rgba(34, 197, 94, 0.15); color: #22c55e; border-radius: var(--radius-full); font-size: 0.75rem; }
.food-cards { display: flex; flex-wrap: wrap; gap: 8px; }
.food-card { display: flex; align-items: center; gap: 8px; padding: 8px 14px; background: var(--color-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border); font-size: 0.8rem; }
.food-emoji { font-size: 1.2rem; }
.food-name { font-weight: 600; }
.food-cal { font-size: 0.7rem; color: var(--color-text-secondary); }
.empty-state { text-align: center; padding: 40px; color: var(--color-text-secondary); font-size: 0.9rem; }

/* Scenarios */
.scenarios-layout { display: grid; grid-template-columns: 300px 1fr; gap: var(--space-4); align-items: start; }
@media (max-width: 768px) { .scenarios-layout { grid-template-columns: 1fr; } }
.scenarios-sidebar { display: flex; flex-direction: column; gap: 8px; }
.scenario-btn {
  padding: 14px 16px; text-align: left; border-radius: var(--radius-md); cursor: pointer;
  background: var(--color-surface); border: 1px solid var(--color-border); color: var(--color-text);
  font-size: 0.85rem; transition: all 0.3s; display: flex; align-items: center; gap: 8px;
}
.scenario-btn:hover { border-color: var(--color-primary); transform: translateX(4px); }
.scenario-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.scenario-title { font-size: 1.2rem; font-weight: 700; margin-bottom: var(--space-4); }

/* Timeline */
.timeline { position: relative; padding-left: 40px; }
.timeline::before { content: ''; position: absolute; left: 15px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--color-primary), var(--color-accent)); }
.timeline-step {
  position: relative; margin-bottom: 20px; animation: slideIn 0.4s ease both;
}
@keyframes slideIn { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
.timeline-marker {
  position: absolute; left: -33px; top: 2px; width: 28px; height: 28px; border-radius: 50%;
  background: var(--color-surface); border: 2px solid var(--color-primary); display: flex;
  align-items: center; justify-content: center; font-size: 0.8rem; z-index: 1;
}
.timeline-content { padding: 12px 16px; background: var(--color-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.timeline-time { font-size: 0.7rem; font-weight: 700; color: var(--color-primary); text-transform: uppercase; }
.timeline-event { font-size: 0.85rem; margin: 4px 0 0; color: var(--color-text-secondary); }

/* Nutrition Grid */
.foods-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.food-tile {
  padding: 16px 12px; text-align: center; border-radius: var(--radius-lg); cursor: default;
  background: var(--color-surface); border: 1px solid var(--color-border); transition: all 0.3s;
}
.food-tile:hover { transform: translateY(-4px); box-shadow: 0 8px 25px rgba(0,0,0,0.15); border-color: var(--color-accent); }
.food-tile-emoji { font-size: 2.5rem; display: block; margin-bottom: 6px; }
.food-tile-name { font-weight: 700; font-size: 0.9rem; display: block; }
.food-tile-cal { font-size: 0.7rem; color: var(--color-accent); display: block; margin: 4px 0; }
.food-tile-benefits { font-size: 0.7rem; color: var(--color-primary); font-weight: 600; }
.food-tile-nutrients { font-size: 0.65rem; color: var(--color-text-secondary); margin-top: 4px; }

/* Quiz */
.quiz-layout { max-width: 600px; margin: 0 auto; }
.quiz-question { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-3); line-height: 1.5; }
.quiz-options { display: flex; flex-direction: column; gap: 8px; }
.quiz-opt-btn {
  padding: 14px 18px; text-align: left; border-radius: var(--radius-md); cursor: pointer;
  background: var(--color-surface); border: 2px solid var(--color-border); color: var(--color-text);
  font-size: 0.9rem; transition: all 0.25s;
}
.quiz-opt-btn:hover:not(:disabled) { border-color: var(--color-primary); background: rgba(139, 92, 246, 0.1); transform: translateX(4px); }
.quiz-opt-btn.correct { border-color: #22c55e; background: rgba(34, 197, 94, 0.2); }
.quiz-opt-btn.wrong { border-color: #ef4444; background: rgba(239, 68, 68, 0.2); }
.quiz-opt-btn:disabled { cursor: default; }
.quiz-feedback { padding: 12px; border-radius: var(--radius-md); font-weight: 700; text-align: center; margin-top: var(--space-3); }
.quiz-stats { display: flex; justify-content: center; gap: var(--space-6); font-size: 0.9rem; }

/* Health Calculators */
.health-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-4); }
.health-card h4 { font-size: 1rem; margin-bottom: var(--space-3); }
.health-inputs { display: flex; flex-direction: column; gap: 8px; margin-bottom: var(--space-3); }
.health-result { text-align: center; padding: var(--space-3); background: var(--color-surface); border-radius: var(--radius-md); min-height: 60px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.bmi-value { font-size: 2.5rem; font-weight: 900; display: block; }
.bmi-cat { font-size: 0.9rem; font-weight: 600; opacity: 0.8; }
.bmi-placeholder { color: var(--color-text-secondary); font-size: 0.85rem; }
.water-val { font-size: 2rem; font-weight: 900; color: #3b82f6; display: block; }
.water-glasses { font-size: 0.8rem; color: var(--color-text-secondary); }
.hr-max { font-size: 0.9rem; margin-bottom: 10px; }
.hr-zones { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.hr-zone { padding: 8px; background: var(--color-surface-alt, rgba(0,0,0,0.2)); border-radius: var(--radius-sm); text-align: center; }
.zone-name { font-size: 0.7rem; font-weight: 700; display: block; color: var(--color-primary); text-transform: uppercase; }
.zone-range { font-size: 0.8rem; font-weight: 600; }

.hidden { display: none !important; }