.battle-meter{background:#fff;padding:25px;margin:30px 0;border-radius:10px;border-left:6px solid #e74c3c}.battle-btn.selected{background:#ffd700;color:#2c3e50;border-color:#ffd700}.result-box.show{display:block;animation:slideIn .5s ease}.hidden-content.revealed{max-height:1000px}.calc-item.checked{border-color:#ffd700;background:rgba(255,255,255,.4)}