/* =============================================================================
   1. 核心变量与基础设置 (Core System)
   ============================================================================= */
:root {
    /* 核心色调 (HSL 驱动) */
    --h: 210;
    --s: 100%;
    --bg-deep:  hsl(var(--h), 30%, 5%);
    --bg-panel: hsla(var(--h), 30%, 8%, 0.75);
    
    --primary:      hsl(198, 93%, 65%);
    --primary-glow: hsla(198, 93%, 60%, 0.4);
    --secondary:    hsl(220, 20%, 75%);
    --accent:       hsl(290, 93%, 65%);
    --danger:       hsl(0, 85%, 60%);
    --success:      hsl(145, 63%, 49%);
    --warning:      hsl(45, 100%, 50%);

    /* 字体堆栈 */
    --font-head: 'Orbitron', sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;

    /* 玻璃边缘 */
    --glass-border: hsla(var(--h), 100%, 100%, 0.1);
    --glass-highlight: hsla(var(--h), 100%, 100%, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    background-color: var(--bg-deep);
    background-image: radial-gradient(circle at center, hsl(var(--h), 40%, 12%) 0%, var(--bg-deep) 100%);
    color: var(--secondary);
    font-family: var(--font-body);
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    -webkit-font-smoothing: antialiased;
}

/* =============================================================================
   2. 沉浸式三列布局 (The Cockpit Layout)
   ============================================================================= */
.app-layout {
    display: grid;
    grid-template-columns: 320px 1fr 320px;
    grid-template-rows: 1fr auto;
    gap: 30px;
    width: 98vw;
    max-width: 1700px;
    height: 90vh;
    padding: 20px;
}

.leaderboard-panel {
    grid-column: 1;
    grid-row: 2;
    width: 100%;
    background: var(--bg-panel);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    backdrop-filter: blur(12px) saturate(150%);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.6),
        inset 0 0 0 1px var(--glass-highlight);
    padding: 15px;
}

.leaderboard-time {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid var(--glass-border);
}

.time-label {
    font-family: var(--font-head);
    font-size: 0.85rem;
    color: var(--text);
    letter-spacing: 1px;
}

.time-value {
    font-family: var(--font-head);
    font-size: 1.1rem;
    color: var(--primary);
    letter-spacing: 2px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 25px;
    height: 100%;
    animation: side-entry 1s cubic-bezier(0.19, 1, 0.22, 1);
}

.left-sidebar { transform-origin: left; }
.right-sidebar { transform-origin: right; }

@keyframes side-entry {
    from { opacity: 0; transform: perspective(1000px) rotateY(15deg); }
    to { opacity: 1; transform: perspective(1000px) rotateY(0deg); }
}

/* =============================================================================
   3. 高级面板：玻璃拟态 (Glassmorphism Pannels)
   ============================================================================= */
.glass-panel {
    background: var(--bg-panel);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    backdrop-filter: blur(12px) saturate(150%);
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.6),
        inset 0 0 0 1px var(--glass-highlight);
    padding: 24px;
    position: relative;
    overflow: hidden;
}

/* 面板装饰线 */
.glass-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 40px; height: 1px;
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.instructions-panel h3, .controls-panel h3 {
    font-family: var(--font-head);
    font-size: 0.95rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.game-header h1 {
    font-family: var(--font-head);
    font-size: 2.4rem;
    font-weight: 900;
    line-height: 1;
    color: white;
    text-shadow: 0 0 20px var(--primary-glow);
    margin-bottom: 8px;
}

.badge {
    font-size: 0.8rem;
    background: var(--primary);
    color: var(--bg-deep);
    padding: 2px 8px;
    border-radius: 4px;
    vertical-align: middle;
    margin-left: 10px;
    filter: drop-shadow(0 0 5px var(--primary));
}

.subtitle {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--primary);
    opacity: 0.7;
    letter-spacing: 1px;
}

/* =============================================================================
   4. 中央：主监控视窗与滤镜 (Main Monitor & CRT)
   ============================================================================= */
.main-stage {
    position: relative;
    width: 100%;
    height: 100%;
}

.game-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: #000;
    border: 2px solid hsla(var(--h), 100%, 50%, 0.3);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.9), inset 0 0 20px hsla(var(--h), 100%, 50%, 0.1);
}

/* CRT 扫描线与暗角增强 */
.crt-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    background: 
        linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%),
        linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
    background-size: 100% 3px, 3px 100%;
    z-index: 5;
    opacity: 0.4;
}

/* 暗角 */
.game-container::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    background: radial-gradient(circle, transparent 70%, rgba(0,0,0,0.5) 100%);
    z-index: 6;
}

canvas {
    width: 100%;
    height: 100%;
    image-rendering: pixelated; /* 复古渲染感 */
}

/* =============================================================================
   5. 状态数据显示 (Tactical Data)
   ============================================================================= */
.game-info {
    display: flex;
    flex-direction: column;
    padding: 10px 24px !important;
}

.info-box {
    padding: 18px 0;
    border-bottom: 1px solid var(--glass-border);
}

.info-box:last-child { border-bottom: none; }

.info-label {
    font-family: inherit;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.5;
    margin-bottom: 5px;
}

.info-value {
    font-family: var(--font-head);
    font-size: 2rem;
    font-weight: 700;
    text-align: right;
}

.text-score { color: var(--warning); text-shadow: 0 0 10px hsla(45, 100%, 50%, 0.3); }
.text-life { color: var(--danger); }
.text-level { color: var(--primary); }
.text-combo { color: var(--accent); }

.combo-box {
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    opacity: 0;
    max-height: 0;
}

.combo-box.visible {
    opacity: 1;
    max-height: 120px;
    padding: 15px 0;
}

.combo-progress-bar {
    width: 100%;
    height: 4px;
    background: hsla(290, 80%, 50%, 0.1);
    border-radius: 2px;
    margin-top: 10px;
}

.combo-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
    transition: width 0.1s linear;
}

/* =============================================================================
   6. 屏幕交互层 (Screens & Buttons)
   ============================================================================= */
.screen {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(5, 5, 15, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 20;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.screen.active { opacity: 1; pointer-events: all; }

.screen h2 {
    font-family: var(--font-head);
    font-size: 3.5rem;
    letter-spacing: 12px;
    margin-bottom: 20px;
    text-shadow: 0 0 30px var(--primary-glow);
}

.btn {
    font-family: var(--font-head);
    background: transparent;
    padding: 16px 48px;
    font-size: 1.1rem;
    border: 2px solid var(--primary);
    color: var(--primary);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 4px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    margin-top: 30px;
    font-weight: bold;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.btn:hover::after { left: 100%; }

.btn:hover {
    background: var(--primary);
    color: var(--bg-deep);
    box-shadow: 0 0 40px var(--primary);
    transform: translateY(-3px);
}

.btn-primary { border-color: var(--primary); color: var(--primary); }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: white; box-shadow: 0 0 40px var(--danger); }

.btn-secondary { border-color: var(--secondary); color: var(--secondary); }
.btn-secondary:hover { background: var(--secondary); color: var(--bg-deep); box-shadow: 0 0 40px var(--secondary); }

/* 用户名输入样式 */
.username-input {
    margin: 20px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 80%;
    max-width: 400px;
}

.username-input label {
    font-family: var(--font-head);
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
}

.username-input input {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--secondary);
    font-family: var(--font-body);
    font-size: 1rem;
    text-align: center;
    transition: all 0.3s;
}

.username-input input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.skill-selection {
    margin: 20px 0;
    text-align: center;
}

.skill-selection h3 {
    font-family: var(--font-head);
    font-size: 0.9rem;
    color: var(--secondary);
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.skill-options {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.skill-option {
    background: var(--bg-panel);
    border: 2px solid var(--glass-border);
    border-radius: 8px;
    padding: 15px 20px;
    cursor: pointer;
    transition: all 0.3s;
    width: 140px;
}

.skill-option:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px var(--primary-glow);
}

.skill-option.selected {
    border-color: var(--accent);
    background: hsla(290, 50%, 20%, 0.5);
    box-shadow: 0 0 20px var(--accent);
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.skill-name {
    font-family: var(--font-head);
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.skill-desc {
    font-family: var(--font-body);
    font-size: 0.7rem;
    color: var(--secondary);
}



.leaderboard-title {
    font-family: var(--font-head);
    font-size: 0.9rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-align: center;
}

.leaderboard-content {
    max-height: 250px;
    overflow-y: auto;
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-head);
    font-size: 0.8rem;
}

.leaderboard-table th {
    padding: 8px;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.7rem;
}

.leaderboard-table td {
    padding: 6px 8px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--secondary);
}

.leaderboard-table tr:last-child td {
    border-bottom: none;
}

.leaderboard-table tr:hover td {
    color: var(--primary);
}

.leaderboard-table td:first-child {
    font-weight: bold;
    color: var(--warning);
}

.leaderboard-table td:nth-child(2) {
    font-weight: bold;
    color: var(--accent);
}

.leaderboard-table td:nth-child(3) {
    font-weight: bold;
    color: var(--success);
}

/* 滚动条样式 */
.leaderboard-content::-webkit-scrollbar {
    width: 6px;
}

.leaderboard-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.leaderboard-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.leaderboard-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.final-score {
    font-size: 1.5rem;
    margin: 20px 0;
    color: var(--warning);
    font-family: var(--font-head);
    letter-spacing: 2px;
}

/* 排行榜高亮动画 */
@keyframes highlight {
    0% { box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), inset 0 0 0 1px var(--glass-highlight); }
    50% { box-shadow: 0 10px 40px var(--primary-glow), inset 0 0 0 2px var(--primary); border-color: var(--primary); }
    100% { box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), inset 0 0 0 1px var(--glass-highlight); }
}

/* 排行榜模态框样式 */
.leaderboard-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.leaderboard-modal.active {
    opacity: 1;
    pointer-events: all;
}

.leaderboard-modal-content {
    background: var(--bg-panel);
    border: 2px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.8),
        inset 0 0 0 1px var(--glass-highlight);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.leaderboard-modal.active .leaderboard-modal-content {
    transform: scale(1);
}

.leaderboard-modal-title {
    font-family: var(--font-head);
    font-size: 2.5rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 30px;
    text-shadow: 0 0 20px var(--primary-glow);
}

.leaderboard-modal-body {
    width: 100%;
    overflow-y: auto;
    margin-bottom: 30px;
}

.leaderboard-table-large {
    font-size: 1.2rem;
}

.leaderboard-table-large th {
    padding: 15px;
    font-size: 1rem;
}

.leaderboard-table-large td {
    padding: 12px 15px;
}

/* 清空排行榜确认模态框样式 */
.clear-leaderboard-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 150;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.clear-leaderboard-modal.active {
    opacity: 1;
    pointer-events: all;
}

.clear-leaderboard-content {
    background: var(--bg-panel);
    border: 2px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.8),
        inset 0 0 0 1px var(--glass-highlight);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.clear-leaderboard-modal.active .clear-leaderboard-content {
    transform: scale(1);
}

.clear-leaderboard-title {
    font-family: var(--font-head);
    font-size: 2rem;
    color: var(--danger);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 20px;
    text-shadow: 0 0 20px var(--danger-glow);
}

.clear-leaderboard-text {
    font-size: 1.2rem;
    color: var(--text);
    margin-bottom: 30px;
}

.clear-leaderboard-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

/* =============================================================================
   7. 细节装饰与动画 (Micro-details)
   ============================================================================= */
.item-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 20px;
}

.item h4 { font-size: 0.85rem; margin-bottom: 4px; font-family: var(--font-head); }
.item p { font-size: 0.75rem; opacity: 0.8; line-height: 1.4; }

.color-double { color: var(--primary); }
.color-shield { color: var(--accent); }

/* 虚拟键位效果 */
.kbm-layout { display: flex; flex-direction: column; gap: 20px; align-items: center; }
.key-group { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.key-row { display: flex; gap: 5px; }

.key {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--primary);
    box-shadow: 0 2px 0 var(--bg-deep);
}

.key-long { min-width: 120px; }

/* Boss HP */
.boss-hp-container {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    z-index: 15;
}

.boss-name {
    font-family: var(--font-head);
    font-size: 0.6rem;
    color: var(--danger);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
    text-align: center;
}

.boss-hp-bar {
    width: 100%;
    height: 6px;
    background: rgba(255,0,0,0.1);
    border: 1px solid var(--danger);
    border-radius: 3px;
    overflow: hidden;
}

.boss-hp-fill {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--danger), #ff8a80);
    box-shadow: 0 0 10px var(--danger);
    transition: width 0.2s ease-out;
}

/* 动效补丁 */
.blink { animation: blink 1.5s infinite; }
@keyframes blink { 50% { opacity: 0; } }

.glitch-text { animation: glitch 4s infinite; position: relative; }
@keyframes glitch {
    0%, 100% { transform: none; }
    2% { transform: skewX(-10deg); }
    4% { transform: skewX(10deg); }
    6% { transform: none; }
}

/* 手机适配 (基础) */
@media (max-width: 1100px) {
    .app-layout { grid-template-columns: 1fr; height: auto; overflow: auto; padding: 10px; }
    .sidebar { max-width: none; }
    .main-stage { aspect-ratio: 4/3; }
    body { overflow: auto; }
}