/* ===== 全局 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
    background-size: 400% 400%;
    animation: bgShift 15s ease infinite;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

@keyframes bgShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

#game-container {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===== 顶部信息栏 ===== */
#hud {
    display: flex;
    justify-content: space-around;
    margin-bottom: 10px;
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.hud-label {
    font-size: 12px;
    opacity: 0.85;
}

.hud-item span:last-child {
    font-size: 22px;
    font-weight: bold;
}

#score-display {
    color: #ffe66d;
}

/* ===== 进度条 ===== */
#progress-bar-outer {
    width: 100%;
    height: 12px;
    background: rgba(0, 0, 0, 0.35);
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
}

#progress-bar-inner {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #4ade80, #22d3ee);
    border-radius: 6px;
    transition: width 0.4s ease;
}

/* ===== 棋盘 ===== */
#board {
    display: grid;
    grid-template-columns: repeat(8, 56px);
    grid-template-rows: repeat(8, 56px);
    gap: 4px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.35);
    border-radius: 12px;
    position: relative;
    touch-action: none;
}

.candy {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 32px;
    cursor: pointer;
    position: relative;
    transition: transform 0.15s ease;
    box-shadow: inset 0 -4px 8px rgba(0, 0, 0, 0.25), inset 0 4px 8px rgba(255, 255, 255, 0.3);
}

.candy:hover {
    transform: scale(1.08);
}

.candy.selected {
    animation: selectedPulse 0.5s ease infinite alternate;
    outline: 3px solid #fff;
    outline-offset: 2px;
}

@keyframes selectedPulse {
    from { transform: scale(1.05); }
    to { transform: scale(1.18); }
}

/* 无操作提示：模拟交换动画 */
.candy.hint-swap {
    animation: hintSwap 0.9s ease-in-out infinite;
    z-index: 5;
    outline: 3px dashed rgba(255, 255, 255, 0.9);
    outline-offset: 2px;
}

@keyframes hintSwap {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(var(--hx, 0), var(--hy, 0)); }
}

/* 糖果颜色 */
.candy[data-color="0"] { background: #ef4444; } /* 红 */
.candy[data-color="1"] { background: #3b82f6; } /* 蓝 */
.candy[data-color="2"] { background: #22c55e; } /* 绿 */
.candy[data-color="3"] { background: #eab308; } /* 黄 */
.candy[data-color="4"] { background: #a855f7; } /* 紫 */
.candy[data-color="5"] { background: #f97316; } /* 橙 */

/* 特殊糖果发光 */
.candy[data-special="striped-h"] {
    background-image: repeating-linear-gradient(0deg, transparent, transparent 10px, rgba(255,255,255,0.5) 10px, rgba(255,255,255,0.5) 14px);
}

.candy[data-special="striped-v"] {
    background-image: repeating-linear-gradient(90deg, transparent, transparent 10px, rgba(255,255,255,0.5) 10px, rgba(255,255,255,0.5) 14px);
}

.candy[data-special="bomb"] {
    border-radius: 50%;
    box-shadow: 0 0 14px #fff, inset 0 -4px 8px rgba(0,0,0,0.3);
    animation: bombSpin 1.5s linear infinite;
}

@keyframes bombSpin {
    0% { transform: rotate(0deg) scale(1.05); }
    50% { transform: rotate(180deg) scale(1.12); }
    100% { transform: rotate(360deg) scale(1.05); }
}

.candy[data-special="rainbow"] {
    background: conic-gradient(red, orange, yellow, green, blue, purple, red);
    border-radius: 50%;
    animation: rainbowGlow 1s linear infinite;
    box-shadow: 0 0 18px #fff;
}

@keyframes rainbowGlow {
    from { filter: hue-rotate(0deg); }
    to { filter: hue-rotate(360deg); }
}

/* 消除动画 */
.candy.clearing {
    animation: clearPop 0.35s ease forwards;
    pointer-events: none;
}

@keyframes clearPop {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.35); opacity: 0.8; }
    100% { transform: scale(0); opacity: 0; }
}

/* 掉落动画 */
.candy.falling {
    transition: transform 0.25s cubic-bezier(0.55, 0, 1, 0.45);
}

/* ===== 连击横幅 ===== */
#combo-banner {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 48px;
    font-weight: bold;
    color: #ffe66d;
    text-shadow: 0 0 20px #ff6600, 0 4px 8px rgba(0,0,0,0.5);
    z-index: 100;
    pointer-events: none;
    transition: transform 0.25s ease;
}

#combo-banner.show {
    transform: translate(-50%, -50%) scale(1);
}

/* ===== 飞行分数 ===== */
.fly-score {
    position: absolute;
    color: #ffe66d;
    font-size: 20px;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.6);
    pointer-events: none;
    z-index: 99;
    animation: flyUp 0.9s ease forwards;
}

@keyframes flyUp {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-50px); }
}

/* ===== 奖励光点（剩余步数飞入棋盘） ===== */
.bonus-orb {
    position: fixed;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: radial-gradient(circle, #fff 0%, #ffe66d 40%, #ff9500 100%);
    box-shadow: 0 0 12px #ffe66d, 0 0 24px #ff9500, 0 0 40px rgba(255, 149, 0, 0.5);
    pointer-events: none;
    z-index: 9999;
}

/* 步数消耗脉冲 */
#moves-display {
    display: inline-block;
}

#moves-display.moves-pulse {
    animation: movesPulse 0.35s ease;
}

@keyframes movesPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.5); color: #ffe66d; text-shadow: 0 0 14px #ff9500; }
    100% { transform: scale(1); }
}

/* ===== 道具栏 ===== */
#tools-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 14px;
}

.tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 8px 14px;
    color: #fff;
    cursor: pointer;
    transition: all 0.2s;
}

.tool-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.tool-btn.active {
    border-color: #ffe66d;
    box-shadow: 0 0 12px #ffe66d;
    background: rgba(255, 230, 109, 0.25);
}

.tool-btn:disabled,
.tool-btn.disabled {
    opacity: 0.35;
    cursor: not-allowed;
    transform: none;
}

.tool-icon {
    font-size: 24px;
}

.tool-name {
    font-size: 12px;
}

.tool-count {
    font-size: 12px;
    color: #ffe66d;
    font-weight: bold;
}

/* ===== 提示 ===== */
#hint {
    text-align: center;
    color: rgba(255, 255, 255, 0.75);
    font-size: 12px;
    margin-top: 10px;
}

/* ===== 弹窗 ===== */
#modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
}

#modal.hidden {
    display: none;
}

#modal-content {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    padding: 36px 48px;
    text-align: center;
    color: #fff;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalIn 0.35s ease;
}

@keyframes modalIn {
    from { transform: scale(0.5); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

#modal-title {
    font-size: 32px;
    margin-bottom: 12px;
}

#modal-text {
    font-size: 18px;
    margin-bottom: 24px;
    opacity: 0.9;
}

#modal-btn {
    padding: 10px 40px;
    font-size: 18px;
    border: none;
    border-radius: 24px;
    background: #ffe66d;
    color: #333;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.15s;
}

#modal-btn:hover {
    transform: scale(1.08);
}

/* ===== 返回选关按钮 ===== */
#level-back-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: #fff;
    padding: 4px 10px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    align-self: center;
}

#level-back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ===== 隔断块（不可交换/不可消除的障碍） ===== */
.candy.wall {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    font-size: 26px;
    cursor: not-allowed;
    box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.4), inset 0 3px 6px rgba(255, 255, 255, 0.15);
    border: 2px solid #374151;
}

.candy.wall:hover {
    transform: none;
}

/* ===== 冻结块（冰层覆盖，相邻消除即可破冰） ===== */
.candy.frozen {
    border: 3px solid rgba(191, 233, 255, 0.95);
    box-shadow: inset 0 0 12px rgba(147, 220, 255, 0.55), inset 0 -4px 8px rgba(0, 0, 0, 0.2), 0 0 10px rgba(125, 211, 252, 0.6);
    filter: brightness(1.1) saturate(0.45);
    cursor: not-allowed;
    animation: icePulse 1.6s ease-in-out infinite;
}

.candy.frozen:hover {
    transform: none;
}

/* 冰层覆盖：半透明冰蓝蒙版 */
.candy.frozen::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 11px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(147, 220, 255, 0.35) 50%, rgba(255, 255, 255, 0.4));
    box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.65);
    pointer-events: none;
    z-index: 1;
}

/* 大号雪花标识（居中） */
.candy.frozen::after {
    content: "❄";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: #ffffff;
    text-shadow: 0 0 5px #38bdf8, 0 0 10px #0ea5e9, 0 1px 2px rgba(0, 0, 0, 0.35);
    pointer-events: none;
    z-index: 2;
}

@keyframes icePulse {
    0%, 100% { box-shadow: inset 0 0 12px rgba(147, 220, 255, 0.55), 0 0 8px rgba(125, 211, 252, 0.45); }
    50% { box-shadow: inset 0 0 16px rgba(147, 220, 255, 0.75), 0 0 16px rgba(125, 211, 252, 0.85); }
}

/* 破冰动画 */
.candy.ice-break {
    animation: iceBreak 0.35s ease forwards;
    pointer-events: none;
}

@keyframes iceBreak {
    0% { transform: scale(1); filter: brightness(1.3) saturate(0.7); }
    40% { transform: scale(1.2); filter: brightness(1.8) saturate(0.4); box-shadow: 0 0 20px #bfe9ff; }
    100% { transform: scale(1); filter: brightness(1); }
}

/* ===== 关卡选择首页 ===== */
#level-select {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
    background-size: 400% 400%;
    animation: bgShift 15s ease infinite;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 500;
    padding: 20px;
    overflow-y: auto;
}

#level-select.hidden {
    display: none;
}

.ls-title {
    font-size: 42px;
    color: #fff;
    text-shadow: 0 0 20px rgba(255, 230, 109, 0.6), 0 4px 8px rgba(0, 0, 0, 0.5);
    margin-bottom: 6px;
}

.ls-sub {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    margin-bottom: 24px;
}

#level-grid {
    display: grid;
    grid-template-columns: repeat(5, 76px);
    gap: 14px;
    margin-bottom: 24px;
}

.level-btn {
    width: 76px;
    height: 76px;
    border-radius: 16px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(6px);
    color: #fff;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2px;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.level-btn:hover {
    transform: translateY(-4px) scale(1.06);
    background: rgba(255, 230, 109, 0.3);
    border-color: #ffe66d;
    box-shadow: 0 8px 20px rgba(255, 230, 109, 0.3);
}

.level-btn.locked {
    opacity: 0.4;
    cursor: not-allowed;
    font-size: 28px;
}

.level-btn.locked:hover {
    transform: none;
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.lv-num {
    font-size: 24px;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.lv-stars {
    font-size: 11px;
    letter-spacing: 1px;
}

.ls-legend {
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    text-align: center;
}

/* ===== 响应式 ===== */
@media (max-width: 560px) {
    #board {
        grid-template-columns: repeat(8, 38px);
        grid-template-rows: repeat(8, 38px);
        gap: 3px;
    }
    .candy {
        width: 38px;
        height: 38px;
        font-size: 22px;
        border-radius: 10px;
    }
    .candy.wall {
        font-size: 18px;
    }
    .candy.frozen::after {
        font-size: 16px;
    }
    #level-grid {
        grid-template-columns: repeat(4, 68px);
        gap: 10px;
    }
    .level-btn {
        width: 68px;
        height: 68px;
    }
    .ls-title {
        font-size: 32px;
    }
}