/* ================== 战斗界面 ================== */
#battle-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at center,#1a0a2e 0%,#050510 100%);z-index:200;display:none;flex-direction:column;padding:8px}
#fx-canvas{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:60}
#battle-title-row{display:flex;justify-content:space-between;align-items:center;padding:4px 8px;z-index:5;flex-shrink:0}
#battle-title{color:#ff6b6b;font-size:18px;font-weight:bold;text-shadow:2px 2px 0 #000,0 0 10px rgba(255,107,107,.6)}
#combo-display{font-size:14px;color:#ffd700;font-weight:bold;text-shadow:1px 1px 0 #000;min-height:18px}
#combo-display.crit{color:#ff6b6b;animation:critPulse .5s infinite}
@keyframes critPulse{50%{transform:scale(1.2);text-shadow:0 0 12px #ff6b6b}}

/* 竞技场 */
.battle-arena{background:linear-gradient(135deg,rgba(20,20,40,.95),rgba(10,10,20,.95));border:2px solid #5a5a8a;border-radius:12px;padding:6px;flex:1;display:flex;flex-direction:column;overflow:hidden;z-index:5;position:relative;box-shadow:inset 0 0 20px rgba(0,0,0,1),0 0 15px rgba(100,100,255,.2)}
#battle-stage{position:relative;flex:1;display:flex;justify-content:space-around;align-items:flex-end;padding:6px 4px 2px;min-height:130px;border-radius:8px;overflow:hidden;background:radial-gradient(circle at center,#2a2a4e 0%,#050510 100%);border-bottom:2px solid #4a4a6a}
#battle-stage::after{content:'';position:absolute;left:0;right:0;bottom:0;height:24px;background:linear-gradient(to bottom,rgba(255,255,255,.08),transparent);pointer-events:none}

.fighter{display:flex;flex-direction:column;align-items:center;z-index:2;position:relative}
.fighter .taunt-bubble{background:#fff;color:#1a1a3e;padding:4px 10px;border-radius:12px;font-size:11px;margin-bottom:4px;display:inline-block;font-weight:bold;max-width:130px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;box-shadow:0 4px 8px rgba(0,0,0,.6);position:relative;order:-1}
.fighter .taunt-bubble::after{content:'';position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-top:7px solid #fff}

/* ★ 怪物精灵美化：悬浮动画 */
.battle-sprite-canvas{width:96px;height:96px;background:radial-gradient(circle,rgba(255,255,255,.1),transparent 60%);border-radius:50%;image-rendering:pixelated;image-rendering:crisp-edges;animation:float-idle 3s ease-in-out infinite;filter:drop-shadow(0 4px 8px rgba(0,0,0,.6))}
@keyframes float-idle{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.fighter-right .battle-sprite-canvas{transform:scaleX(-1);animation:float-idle-flip 3s ease-in-out infinite}
@keyframes float-idle-flip{0%,100%{transform:scaleX(-1) translateY(0)}50%{transform:scaleX(-1) translateY(-6px)}}

/* ★ BOSS/精英光环脉动 */
#enemy-fighter.boss .battle-sprite-canvas{animation:boss-aura 2s ease-in-out infinite}
@keyframes boss-aura{0%,100%{filter:drop-shadow(0 0 12px rgba(255,80,80,.6))}50%{filter:drop-shadow(0 0 28px rgba(255,80,80,1))}}
#enemy-fighter.elite .battle-sprite-canvas{box-shadow:0 0 20px rgba(255,215,0,.8)}

.fighter-info{margin-top:6px;text-align:center;width:110px}
.fighter-info .name{font-weight:bold;color:#ffd700;font-size:13px;margin-bottom:4px;text-shadow:1px 1px 2px #000}
.battle-hp-bar{background:#050510;height:14px;border:1px solid #3a3a5a;border-radius:4px;position:relative;overflow:hidden;box-shadow:inset 0 2px 4px rgba(0,0,0,.8)}
.battle-hp-fill{background:linear-gradient(to bottom,#ff6b6b,#c0392b);height:100%;transition:width .3s;box-shadow:inset 0 2px 2px rgba(255,255,255,.4)}
.battle-hp-text{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:10px;color:#fff;text-shadow:1px 1px 1px #000;font-weight:bold;pointer-events:none}

/* 战斗动画 */
.fighter-left.attacking{animation:lungeRight .35s ease-out}
@keyframes lungeRight{0%{transform:translateX(0)}35%{transform:translateX(50px) scale(1.1)}60%{transform:translateX(40px)}100%{transform:translateX(0)}}
.fighter-right.attacking{animation:lungeLeft .35s ease-out}
@keyframes lungeLeft{0%{transform:translateX(0)}35%{transform:translateX(-50px) scale(1.1)}60%{transform:translateX(-40px)}100%{transform:translateX(0)}}
.fighter.hit{animation:hitShake .4s}
@keyframes hitShake{0%,100%{transform:translateX(0);filter:brightness(1)}15%{transform:translateX(-8px);filter:brightness(2.5) sepia(1) hue-rotate(-50deg) saturate(4)}30%{transform:translateX(8px);filter:brightness(2.5) sepia(1) hue-rotate(-50deg) saturate(4)}50%{transform:translateX(-5px);filter:brightness(1.5)}70%{transform:translateX(5px)}}
.fighter.defeating{animation:defeatDissolve .8s forwards}
@keyframes defeatDissolve{0%{opacity:1;filter:blur(0) brightness(1)}30%{filter:blur(0) brightness(3) scale(1.1)}100%{opacity:0;transform:scale(.2) translateY(-40px) rotate(20deg);filter:blur(10px) brightness(2)}}
.fighter-left.charging{animation:skillChargeGlow .5s ease-in-out}
@keyframes skillChargeGlow{0%{filter:brightness(1) drop-shadow(0 0 0 #5dade2)}50%{filter:brightness(2.5) drop-shadow(0 0 20px #9b59b6) drop-shadow(0 0 10px #5dade2);transform:scale(1.15)}100%{filter:brightness(1.5) drop-shadow(0 0 10px #5dade2);transform:scale(1)}}

/* 开场幕布与VS */
.curtain{position:absolute;top:0;width:51%;height:100%;background:#000;z-index:10;pointer-events:none}
.curtain-l{left:0;transform:translateX(0);border-right:2px solid #ffd700}
.curtain-r{right:0;transform:translateX(0);border-left:2px solid #ffd700}
#battle-stage.intro .curtain-l{animation:curtainOutL .6s ease-in .2s forwards}
#battle-stage.intro .curtain-r{animation:curtainOutR .6s ease-in .2s forwards}
@keyframes curtainOutL{to{transform:translateX(-101%)}}
@keyframes curtainOutR{to{transform:translateX(101%)}}
.vs-badge{position:absolute;top:40%;left:50%;transform:translate(-50%,-50%);z-index:11;font-size:28px;font-weight:900;color:#ffd700;text-shadow:0 0 15px #ff0,3px 3px 0 #8a1a1a;opacity:0;pointer-events:none;font-style:italic}
#battle-stage.intro .vs-badge{animation:vsPop .9s ease-out forwards}
@keyframes vsPop{0%{opacity:0;transform:translate(-50%,-50%) scale(4) rotate(-20deg)}30%{opacity:1;transform:translate(-50%,-50%) scale(1) rotate(0)}70%{opacity:1}100%{opacity:0;transform:translate(-50%,-50%) scale(.5)}}

/* 战斗面板 UI */
#timer-row{display:flex;gap:8px;flex-shrink:0;margin:6px 0}
#question-timer,#monster-timer{flex:1;height:14px;background:#050510;border:1px solid #ffd700;border-radius:4px;overflow:hidden;position:relative;box-shadow:inset 0 2px 4px rgba(0,0,0,.8)}
#monster-timer{border-color:#ff6b6b}
#timer-fill,#monster-fill{height:100%;transition:width .1s linear;width:100%;box-shadow:inset 0 2px 2px rgba(255,255,255,.4)}
#timer-fill{background:linear-gradient(to right,#27ae60,#f1c40f,#e74c3c)}
#monster-fill{background:linear-gradient(to right,#ff6b6b,#c0392b)}
#timer-text,#monster-text{position:absolute;top:0;left:0;width:100%;text-align:center;color:#fff;font-size:10px;font-weight:bold;text-shadow:1px 1px 1px #000;line-height:14px;pointer-events:none}
#monster-text{color:#ffd700}
#question-timer.danger #timer-fill{animation:timerPulse .3s infinite}
@keyframes timerPulse{50%{filter:brightness(1.8)}}

#damage-preview{background:rgba(20,20,40,.8);border:1px solid #9b59b6;border-radius:6px;padding:6px 10px;font-size:12px;line-height:1.5;flex-shrink:0;color:#ddd;box-shadow:inset 0 0 10px rgba(155,89,182,.2)}
#question-area{background:linear-gradient(180deg,#1a1a3e,#0f0f1e);border:2px solid #ffd700;border-radius:8px;padding:10px;margin:6px 0;flex:1;overflow-y:auto;min-height:0;box-shadow:0 4px 10px rgba(0,0,0,.5)}
#question-text{color:#fff;margin-bottom:10px;font-size:14px;line-height:1.6;font-weight:bold;text-shadow:1px 1px 2px #000}

/* 答题按钮 */
.answer-btn{display:block;width:100%;text-align:left;font-family:inherit;font-size:13px;font-weight:bold;background:linear-gradient(180deg,#2a2a5a 0%,#1a1a3e 100%);border:1px solid #5a5a8a;border-radius:6px;color:#aed6f1;padding:12px 10px;margin:6px 0;box-shadow:0 4px 0 #0f0f1e,0 5px 6px rgba(0,0,0,.5);transform:translateY(0);transition:all .1s}
.answer-btn:active{transform:translateY(4px);box-shadow:0 0 0 #0f0f1e,0 1px 2px rgba(0,0,0,.5);background:linear-gradient(180deg,#1a1a3e 0%,#0f0f1e 100%)}
.answer-btn.correct{background:linear-gradient(180deg,#27ae60,#1e8449)!important;border-color:#2ecc71;color:#fff}
.answer-btn.wrong{background:linear-gradient(180deg,#c0392b,#922b21)!important;border-color:#e74c3c;color:#fff}

#battle-log{background:linear-gradient(180deg,#0a0a18,#050510);padding:8px 10px;border-radius:6px;font-size:13px;min-height:34px;border:1px solid #4a4a8a;color:#fff;margin:6px 0;flex-shrink:0;box-shadow:inset 0 2px 5px rgba(0,0,0,.8);font-weight:bold;text-align:center}

#battle-actions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;flex-shrink:0}
.battle-action-btn{background:linear-gradient(180deg,#4a4a8a 0%,#2a2a5a 100%);border:1px solid #6a6aaa;color:#fff;padding:12px 4px;border-radius:8px;font-family:inherit;font-size:14px;font-weight:bold;box-shadow:0 4px 0 #0f0f1e,0 5px 6px rgba(0,0,0,.5);transition:all .1s;text-shadow:1px 1px 2px #000}
.battle-action-btn:active{transform:translateY(4px);box-shadow:0 0 0 #0f0f1e}

/* 伤害飘字 */
.damage-float{position:absolute;font-size:28px;font-weight:900;pointer-events:none;animation:floatUpBounce 1.2s forwards;z-index:300;text-shadow:2px 2px 0 #000,-2px -2px 0 #000,2px -2px 0 #000,-2px 2px 0 #000,0 5px 10px rgba(0,0,0,.5)}
.damage-float.enemy{color:#ff6b6b}
.damage-float.player{color:#ffd700}
.damage-float.heal{color:#2ecc71}
.damage-float.crit{color:#ffd700;font-size:38px;font-style:italic}
.damage-float.book{color:#fff099;font-size:22px}
@keyframes floatUpBounce{0%{transform:translateY(0) scale(.3);opacity:0}15%{transform:translateY(-15px) scale(1.4);opacity:1}30%{transform:translateY(-10px) scale(1);opacity:1}100%{transform:translateY(-60px) scale(1);opacity:0}}