/* ============================================================
   双人 PK · 街霸对决 — 样式表
   适配希沃一体机横屏（1080p/4K），触屏优先
   ============================================================ */

:root {
    --bg-dark:        #0a0a1a;
    --bg-stage:       linear-gradient(180deg, #1a0033 0%, #330066 40%, #000033 100%);
    --red-primary:    #e74c3c;
    --red-glow:       #ff6b35;
    --blue-primary:   #3498db;
    --blue-glow:      #45b7d1;
    --hp-green:       #2ecc71;
    --hp-yellow:      #f1c40f;
    --hp-red:         #e74c3c;
    --hp-empty:       #444;
    --text-color:     #fff;
    --text-dim:       #aaa;
    --border-glow:    #ffd700;
    --transition:     all 0.3s ease;
}

/* ---- 全局 ---- */
* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: "黑体", "Microsoft YaHei", Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-color);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* ---- 主舞台 ---- */
#game-container {
    display: grid;
    grid-template-columns: 80px 1fr 1fr 1fr 80px;
    grid-template-rows: auto 1fr auto auto;
    height: 100vh;
    width: 100%;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-stage);
}

#header {
    grid-column: 1 / span 5;
    text-align: center;
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    color: var(--border-glow);
    text-shadow: 0 0 8px var(--border-glow), 0 0 16px var(--red-glow);
    margin: 0.2rem 0;
    letter-spacing: 0.2em;
    font-weight: bold;
}

/* ---- 血量柱 ---- */
.hp-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    grid-row: 2 / span 1;
    height: 100%;
    z-index: 15;
}

.hp-bar-left  { grid-column: 1; align-items: flex-end; }
.hp-bar-right { grid-column: 5; align-items: flex-start; }

.hp-bar-name {
    font-size: clamp(0.9rem, 1.5vw, 1.3rem);
    font-weight: bold;
    margin-bottom: 0.4rem;
    text-shadow: 0 0 6px currentColor;
}

.hp-bar-left  .hp-bar-name { color: var(--red-primary); }
.hp-bar-right .hp-bar-name { color: var(--blue-primary); }

.hp-bar-track {
    display: flex;
    flex-direction: column-reverse;
    gap: 0.25rem;
    width: 2.2rem;
    height: 100%;
    padding: 0.2rem;
    background: rgba(0,0,0,0.5);
    border: 0.15rem solid #555;
    border-radius: 0.5rem;
    box-shadow: inset 0 0 8px rgba(0,0,0,0.6);
}

.hp-segment {
    flex: 1 1 0;
    background: var(--hp-green);
    border-radius: 0.15rem;
    transition: background 0.3s ease, opacity 0.5s ease, transform 0.3s ease;
    box-shadow: 0 0 4px currentColor;
}

.hp-segment.lost {
    background: var(--hp-empty);
    opacity: 0.35;
    transform: scaleX(0.4);
    box-shadow: none;
}

.hp-bar.warn  .hp-segment:not(.lost) { background: var(--hp-yellow); }
.hp-bar.crit  .hp-segment:not(.lost) { background: var(--hp-red); animation: pulse 0.5s infinite alternate; }

/* ---- 角色 ---- */
.fighter {
    grid-row: 2 / span 1;
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    height: 100%;
    overflow: visible;
    transition: transform 0.4s ease, opacity 0.4s ease;
    z-index: 5;
}

.fighter-red  { grid-column: 2; }
.fighter-blue { grid-column: 4; }

.fighter-sprite {
    width: 100%;
    height: 90%;
    max-height: 480px;
    background-repeat: no-repeat;
    background-position: center bottom;
    background-size: contain;
    image-rendering: pixelated;
    transition: transform 0.2s ease;
}

.fighter-red  .fighter-sprite { background-image: url("assets/fighters/red-base.png"); }
.fighter-blue .fighter-sprite { background-image: url("assets/fighters/blue-base.png"); }

.fighter.in-question {
    opacity: 0.35;
    pointer-events: none;
}
.fighter-red.in-question  { transform: scale(0.30); transform-origin: bottom left; }
.fighter-blue.in-question { transform: scale(0.30); transform-origin: bottom right; }

.fighter.attack-red  .fighter-sprite { animation: sprite-attack-red 1.6s steps(1) forwards; }
.fighter.attack-blue .fighter-sprite { animation: sprite-attack-blue 1.6s steps(1) forwards; }

/* 受击动画（1 帧抖动，保留兼容）*/
.fighter.hit .fighter-sprite {
    animation: hit-shake 0.6s ease;
    filter: drop-shadow(0 0 12px var(--red-primary)) hue-rotate(-30deg);
}

/* 红方受击 5 帧动画（蓝方攻击时触发）*/
.fighter.hit-red .fighter-sprite { animation: sprite-hit-red 1.6s steps(1) forwards; }

/* 蓝方受击 5 帧动画（红方攻击时触发）*/
.fighter.hit-blue .fighter-sprite { animation: sprite-hit-blue 1.6s steps(1) forwards; }

/* ✅ 答错反噬：角色显示在最顶层（z-index 30 > answer-container 10） */
.fighter.self-penalty {
    z-index: 30 !important;
    opacity: 1 !important;
    transform: scale(1.15) !important;
    pointer-events: none;
    filter: drop-shadow(0 0 30px #ff0000);
}

.fighter.self-penalty .fighter-sprite {
    animation: self-penalty-shake 0.7s ease;
    filter: drop-shadow(0 0 18px #ff0000) hue-rotate(60deg) brightness(1.3);
}

/* ---- 中央区域（关键修复：不拦截下方按钮点击）---- */
#center {
    grid-column: 3;
    grid-row: 2 / span 1;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    z-index: 20;
    gap: 0.5rem;
    pointer-events: none;            /* ✅ 容器不拦截点击（让 col 3 内的按钮可点击）*/
}

/* ✅ 内部按钮仍可点击（结果横幅 + FIGHT 按钮） */
#result-banner,
.fight-btn {
    pointer-events: auto;
}

#result-banner {
    font-size: clamp(1.4rem, 2.8vw, 2.4rem);
    font-weight: 900;
    color: var(--border-glow);
    text-shadow: 0 0 20px currentColor, 2px 2px 0 #000;
    letter-spacing: 0.08em;             /* 减少字间距防止换行 */
    animation: result-flash 0.8s ease-in-out infinite alternate;
    margin: 0;
    order: 1;
    white-space: nowrap;                 /* 强制不换行 */
    max-width: 95%;                      /* 加宽容器 */
    width: max-content;                  /* 宽度自适应内容 */
    min-width: 0;
    text-align: center;
    padding: 0.3rem 1rem;                /* 内边距避免紧贴 */
}

.fight-btn {
    font-family: "Impact", "Arial Black", sans-serif;
    font-size: clamp(1.25rem, 3vw, 2.5rem);
    font-weight: 900;
    color: #fff;
    background: linear-gradient(180deg, #ff4500 0%, #b22222 100%);
    border: 0.2rem solid #ffd700;
    border-radius: 0.7rem;
    padding: 0.5rem 1.5rem;
    cursor: pointer;
    letter-spacing: 0.1em;
    text-shadow: 0 0 8px #000, 1px 1px 0 #000;
    box-shadow:
        0 0 15px rgba(255, 69, 0, 0.7),
        inset 0 0 15px rgba(255, 215, 0, 0.4);
    animation: btn-glow 1.5s ease-in-out infinite alternate;
    transition: transform 0.2s ease;
    order: 2;
}

.fight-btn:hover { transform: scale(1.08); }
.fight-btn:active { transform: scale(0.96); }
#fight-btn.hidden { display: none; }

/* ---- 答题面板：上下布局 ---- */
#answer-container {
    grid-column: 2 / span 3;
    grid-row: 2 / span 1;
    display: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0.6rem;
    padding: 0.8rem 1rem;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10;
}

#answer-container.visible { display: flex; }

/* 题目框：字号 2 倍（基础版：题干 < 12 字） */
#question-box {
    flex: 0 0 auto;
    max-width: 70%;
    align-self: center;
    background: rgba(0, 0, 0, 0.85);
    border: 0.2rem solid var(--border-glow);
    border-radius: 1rem;
    padding: 0.6rem 1.2rem;
    font-family: "楷体", "KaiTi", "STKaiti", serif;
    font-size: clamp(2.8rem, 6vw, 4.8rem);
    color: #fff;
    text-align: center;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
    margin-bottom: 0.4rem;
    word-break: break-word;
    line-height: 1.2;
    transition: max-width 0.2s ease, font-size 0.2s ease;
}

/* ✅ 题干较长（12-20 字）：缩小字号 + 加宽区域 */
#question-box.long-text {
    max-width: 85%;
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    padding: 0.5rem 1rem;
}

/* ✅ 题干很长（> 20 字）：再缩小字号 + 加更宽 */
#question-box.extra-long-text {
    max-width: 95%;
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    padding: 0.4rem 0.8rem;
    line-height: 1.15;
}

#question-box .answer-fill {
    color: var(--hp-green);
    font-weight: bold;
    text-shadow: 0 0 8px var(--hp-green);
}

/* 答题行 */
.answer-row {
    flex: 0 0 auto;
    max-height: 42%;
    display: flex;
    gap: 1rem;
    align-items: stretch;
    min-height: 0;
}

.answer-panel {
    flex: 1 1 0;
    min-width: 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.8rem;
    padding: 0.4rem 1.2rem;
    border: 0.15rem solid transparent;
    display: flex;
    justify-content: center;
}

.answer-panel-left  { border-color: var(--red-primary);  box-shadow: 0 0 12px rgba(231, 76, 60, 0.4); }
.answer-panel-right { border-color: var(--blue-primary); box-shadow: 0 0 12px rgba(52, 152, 219, 0.4); }

.answer-grid {
    display: grid;
    gap: 1rem;
    height: 100%;
    width: 100%;
    max-width: 90%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: center;
    align-content: center;
}

/* ✅ 关键修复：去掉所有悬停效果，只追求准确响应 */
.answer-btn {
    border: none;
    border-radius: 0.6rem;
    cursor: pointer;
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: bold;
    color: #fff;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    padding: 0.5rem 0.8rem;
    transition: none;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3.5rem;
    min-width: 4.5rem;
    max-width: 9rem;
    word-break: keep-all;
    white-space: nowrap;
}

/* ✅ 答案文本较长（4-5 字，如「白居易」「李商隐」）：缩小字号 + 加宽按钮 */
.answer-btn.long-text {
    font-size: clamp(1.7rem, 3.4vw, 2.8rem);
    min-width: 7rem;
    max-width: 12rem;
    padding: 0.5rem 1rem;
}

/* ✅ 答案文本很长（> 5 字，罕见）：再缩小 + 再加宽 */
.answer-btn.extra-long-text {
    font-size: clamp(1.4rem, 2.8vw, 2.2rem);
    min-width: 9rem;
    max-width: 15rem;
    padding: 0.4rem 1.2rem;
}

/* ✅ 统一红方按钮底色（4 个按钮全部红色渐变） */
.answer-panel-left  .answer-btn {
    background: linear-gradient(180deg, #ff6b35, #c0392b);
}

/* ✅ 统一蓝方按钮底色（4 个按钮全部蓝色渐变） */
.answer-panel-right .answer-btn {
    background: linear-gradient(180deg, #45b7d1, #2471a3);
}

/* ---- 控制条 ---- */
.controls-container {
    grid-column: 1 / span 5;
    grid-row: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: rgba(0,0,0,0.6);
    border-radius: 0.8rem;
    border: 0.15rem solid #555;
}

#timer {
    font-family: "Impact", "Arial Black", monospace;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    color: #fff;
    background: #000;
    padding: 0.4rem 1rem;
    border-radius: 0.6rem;
    border: 0.2rem solid var(--hp-red);
    min-width: 5rem;
    text-align: center;
    transition: color 0.3s ease;
}

#timer.warn { color: var(--hp-yellow); animation: pulse 0.6s infinite alternate; }
#timer.crit { color: var(--hp-red);   animation: pulse 0.4s infinite alternate; }

.time-selector {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-color);
    font-size: clamp(0.8rem, 1.4vw, 1rem);
}

#time-input {
    padding: 0.4rem 0.6rem;
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    background: #000;
    color: var(--border-glow);
    border: 0.15rem solid var(--border-glow);
    border-radius: 0.6rem;
    width: 4.5rem;
    text-align: center;
    font-weight: bold;
}

#file-controls {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

input[type="file"] {
    color: var(--text-color);
    background: transparent;
    border: 0.15rem solid var(--blue-primary);
    border-radius: 0.6rem;
    padding: 0.3rem 0.6rem;
    font-size: clamp(0.8rem, 1.3vw, 1rem);
    cursor: pointer;
}

input[type="file"]::file-selector-button {
    background: var(--blue-primary);
    color: #fff;
    border: none;
    padding: 0.3rem 0.8rem;
    border-radius: 0.4rem;
    cursor: pointer;
    margin-right: 0.5rem;
}

.ctrl-btn {
    background: transparent;
    border: 0.15rem solid var(--border-glow);
    color: var(--border-glow);
    border-radius: 50%;
    width: 2.4rem;
    height: 2.4rem;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.ctrl-btn:hover {
    background: var(--border-glow);
    color: #000;
}

/* ---- 页脚版权 ---- */
#footer {
    grid-column: 1 / span 5;
    grid-row: 4;
    text-align: center;
    color: var(--text-dim);
    font-size: clamp(0.7rem, 1vw, 0.9rem);
    letter-spacing: 0.1em;
    padding: 0.4rem 0;
    border-top: 0.05rem solid rgba(255,255,255,0.1);
    text-shadow: 0 0 4px rgba(255,215,0,0.2);
}

/* ---- 火球特效（pointer-events: none，不拦截按钮）---- */
#fx-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 50;
}

.fireball {
    position: absolute;
    top: 50%;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    transform: translateY(-50%);
    filter: blur(1px);
    will-change: transform, opacity;
}

.fireball.red {
    left: 22%;
    background: radial-gradient(circle, #fff 0%, #ffd700 30%, #ff4500 65%, #8b0000 100%);
    box-shadow:
        0 0 30px #ff4500,
        0 0 60px #ff8c00,
        0 0 100px #ff4500;
    animation: fireball-fly-right 0.55s linear forwards;
}

.fireball.blue {
    right: 22%;
    background: radial-gradient(circle, #fff 0%, #87cefa 30%, #1e90ff 65%, #00008b 100%);
    box-shadow:
        0 0 30px #1e90ff,
        0 0 60px #4169e1,
        0 0 100px #1e90ff;
    animation: fireball-fly-left 0.55s linear forwards;
}

.flash-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 0, 0, 0.4);
    pointer-events: none;
    animation: flash 0.3s ease-out forwards;
    z-index: 60;
}

/* ---- 关键帧动画 ---- */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-10px); }
    40% { transform: translateX(10px); }
    60% { transform: translateX(-6px); }
    80% { transform: translateX(6px); }
}

@keyframes pulse {
    0%   { transform: scale(1);    opacity: 1;   }
    100% { transform: scale(1.15); opacity: 0.7; }
}

@keyframes btn-glow {
    0%   { box-shadow: 0 0 15px rgba(255,69,0,0.6), inset 0 0 15px rgba(255,215,0,0.4); }
    100% { box-shadow: 0 0 30px rgba(255,69,0,1),   inset 0 0 25px rgba(255,215,0,0.7); }
}

@keyframes sprite-attack-red {
    0%   { background-image: url("assets/fighters/red-base.png");                  transform: translateX(0); }
    15%  { background-image: url("assets/fighters/生图/red_attack1.png");        transform: translateX(8px); }
    30%  { background-image: url("assets/fighters/生图/red_attack2.png");        transform: translateX(22px) scale(1.05); }
    45%  { background-image: url("assets/fighters/生图/red_attack3.png");        transform: translateX(36px) scale(1.10); }
    60%  { background-image: url("assets/fighters/生图/red_attack4.png");        transform: translateX(48px) scale(1.15); }
    75%  { background-image: url("assets/fighters/生图/red_attack5.png");        transform: translateX(36px); }
    90%  { background-image: url("assets/fighters/red-base.png");                  transform: translateX(15px); }
    100% { background-image: url("assets/fighters/red-base.png");                  transform: translateX(0); }
}

@keyframes sprite-attack-blue {
    0%   { background-image: url("assets/fighters/blue-base.png");                  transform: translateX(0); }
    15%  { background-image: url("assets/fighters/生图/blue_attack1.png");       transform: translateX(-8px); }
    30%  { background-image: url("assets/fighters/生图/blue_attack2.png");       transform: translateX(-22px) scale(1.05); }
    45%  { background-image: url("assets/fighters/生图/blue_attack3.png");       transform: translateX(-36px) scale(1.10); }
    60%  { background-image: url("assets/fighters/生图/blue_attack4.png");       transform: translateX(-48px) scale(1.15); }
    75%  { background-image: url("assets/fighters/生图/blue_attack5.png");       transform: translateX(-36px); }
    90%  { background-image: url("assets/fighters/blue-base.png");                  transform: translateX(-15px); }
    100% { background-image: url("assets/fighters/blue-base.png");                  transform: translateX(0); }
}

@keyframes hit-shake {
    0%, 100% { transform: translateX(0); }
    10% { transform: translateX(-15px) rotate(-3deg); }
    30% { transform: translateX(15px)  rotate(3deg); }
    50% { transform: translateX(-10px); }
    70% { transform: translateX(10px); }
    90% { transform: translateX(-5px); }
}

@keyframes sprite-hit-red {
    0%   { background-image: url("assets/fighters/red-base.png");                          transform: translateX(0); }
    15%  { background-image: url("assets/fighters/生图/目录/red_hit1.png");             transform: translateX(-5px); }
    30%  { background-image: url("assets/fighters/生图/目录/red_hit2.png");             transform: translateX(-15px) scale(1.05); }
    45%  { background-image: url("assets/fighters/生图/目录/red_hit3.png");             transform: translateX(-10px) scale(0.95); }
    60%  { background-image: url("assets/fighters/生图/目录/red_hit4.png");             transform: translateX(-8px); }
    75%  { background-image: url("assets/fighters/生图/目录/red_hit5.png");             transform: translateX(-3px); }
    90%  { background-image: url("assets/fighters/red-base.png");                          transform: translateX(0); }
    100% { background-image: url("assets/fighters/red-base.png");                          transform: translateX(0); }
}

@keyframes sprite-hit-blue {
    0%   { background-image: url("assets/fighters/blue-base.png");                          transform: translateX(0); }
    15%  { background-image: url("assets/fighters/生图/目录/blue_hit1.png");            transform: translateX(5px); }
    30%  { background-image: url("assets/fighters/生图/目录/blue_hit2.png");            transform: translateX(15px) scale(1.05); }
    45%  { background-image: url("assets/fighters/生图/目录/blue_hit3.png");            transform: translateX(10px) scale(0.95); }
    60%  { background-image: url("assets/fighters/生图/目录/blue_hit4.png");            transform: translateX(8px); }
    75%  { background-image: url("assets/fighters/生图/目录/blue_hit5.png");            transform: translateX(3px); }
    90%  { background-image: url("assets/fighters/blue-base.png");                          transform: translateX(0); }
    100% { background-image: url("assets/fighters/blue-base.png");                          transform: translateX(0); }
}

@keyframes self-penalty-shake {
    0%, 100% { transform: translateX(0) scale(1); }
    10%      { transform: translateX(-25px) scale(1.08); }
    20%      { transform: translateX(25px)  scale(1.08); }
    30%      { transform: translateX(-20px) scale(1.10); }
    40%      { transform: translateX(20px)  scale(1.10); }
    50%      { transform: translateX(-15px) scale(1.12); }
    60%      { transform: translateX(15px)  scale(1.12); }
    70%      { transform: translateX(-10px) scale(1.10); }
    80%      { transform: translateX(10px)  scale(1.08); }
    90%      { transform: translateX(-5px); }
}

@keyframes fireball-fly-right {
    0%   { transform: translate(0, -50%) scale(0.4); opacity: 0; }
    20%  { opacity: 1; }
    100% { transform: translate(60vw, -50%) scale(1.3); opacity: 0; }
}

@keyframes fireball-fly-left {
    0%   { transform: translate(0, -50%) scale(0.4); opacity: 0; }
    20%  { opacity: 1; }
    100% { transform: translate(-60vw, -50%) scale(1.3); opacity: 0; }
}

@keyframes flash {
    0%   { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes result-flash {
    0%   { transform: scale(1);    text-shadow: 0 0 20px currentColor; }
    100% { transform: scale(1.1);  text-shadow: 0 0 40px currentColor, 0 0 80px currentColor; }
}

@keyframes fade-in {
    from { opacity: 0; transform: scale(0.95); }
    to   { opacity: 1; transform: scale(1); }
}

.fade-in { animation: fade-in 0.4s ease; }

/* ---- 撒花 ---- */
.confetti {
    position: fixed;
    width: 12px;
    height: 12px;
    pointer-events: none;
    z-index: 100;
    animation: fall 3s linear forwards;
}

@keyframes fall {
    0%   { transform: translateY(-10vh) rotate(0deg);   opacity: 1; }
    100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* ---- 隐藏类 ---- */
.hidden { display: none !important; }

/* ---- 移动端 / 小屏适配 ---- */
@media (max-width: 900px) {
    #game-container {
        grid-template-columns: 50px 1fr 1fr 1fr 50px;
    }
    .hp-bar-track { width: 1.6rem; }
    .fighter.in-question { transform: scale(0.25); }
    .answer-btn { max-width: 7rem; min-width: 3.5rem; }
}