/* 赛博霓虹：光轨重构 (Cyber Lightcycle Flux) Design System */
:root {
    --bg-dark: #070B19;
    --card-bg: rgba(13, 20, 41, 0.85);
    --neon-cyan: #00F0FF;
    --neon-pink: #FF007F;
    --neon-yellow: #FFE600;
    --neon-purple: #9D4EDD;
    --text-light: #F0F6FC;
    --text-muted: #8B949E;
    --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.6);
    --glow-pink: 0 0 15px rgba(255, 0, 127, 0.6);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Outfit', 'Noto Sans SC', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.synthwave-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at 50% 30%, #150d2a 0%, #070B19 70%);
    z-index: -1;
}

.app-container {
    width: 100%;
    max-width: 640px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* Header Navigation */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 16px;
    padding: 12px 18px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--neon-cyan);
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.2s ease;
}

.back-link:hover {
    text-shadow: var(--glow-cyan);
    transform: translateX(-2px);
}

.header-title {
    text-align: center;
}

.header-title h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 1.5px;
    color: var(--text-light);
}

.header-title h1 span {
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
}

.subtitle {
    font-size: 11px;
    color: var(--text-muted);
}

.header-controls {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    color: var(--text-light);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
}

/* HUD Panel */
.hud-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    background: var(--card-bg);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 16px;
    padding: 10px;
    backdrop-filter: blur(10px);
}

.hud-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 6px;
}

.hud-label {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
}

.hud-val {
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: 700;
}

.glow-cyan {
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
}

.glow-pink {
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
}

.energy-track {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin: 4px 0;
}

.energy-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-cyan));
    box-shadow: var(--glow-cyan);
    transition: width 0.3s ease;
}

.energy-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 10px;
    color: var(--neon-cyan);
}

/* Game Area & Canvas */
.game-area {
    width: 100%;
    display: flex;
    justify-content: center;
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    max-width: 520px;
    aspect-ratio: 1 / 1;
    border-radius: 20px;
    background: #030611;
    border: 2px solid rgba(0, 240, 255, 0.4);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.8);
    overflow: hidden;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Overlays */
.overlay-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 11, 25, 0.45);
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 20;
    padding: 20px;
}

.overlay-content {
    background: rgba(13, 20, 41, 0.92);
    border: 1px solid var(--neon-cyan);
    border-radius: 20px;
    padding: 24px;
    text-align: center;
    max-width: 380px;
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.cyber-crest {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: rgba(0, 240, 255, 0.1);
    border: 2px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-size: 28px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--glow-cyan);
}

.cyber-crest.dead {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    box-shadow: var(--glow-pink);
}

.overlay-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
}

.overlay-desc {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-light);
}

.glow-btn {
    background: linear-gradient(135deg, var(--neon-cyan), #0099FF);
    color: #030611;
    border: none;
    border-radius: 25px;
    padding: 12px 28px;
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
    transition: all 0.2s ease;
}

.glow-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.9);
}

.glow-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    box-shadow: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Mobile Controls */
.mobile-controls-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 16px;
    padding: 12px;
}

.dpad-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.dpad-row {
    display: flex;
    gap: 4px;
}

.dpad-btn {
    width: 44px;
    height: 44px;
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.3);
    color: var(--neon-cyan);
    border-radius: 10px;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.dpad-btn:active {
    background: var(--neon-cyan);
    color: #030611;
}

.skill-btn {
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: #FFF;
    border: 1px solid #FFF;
    border-radius: 16px;
    padding: 10px 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    box-shadow: var(--glow-pink);
    transition: all 0.2s ease;
}

.skill-btn:disabled {
    background: #334155;
    box-shadow: none;
    border-color: #475569;
    opacity: 0.5;
}