:root {
    --bg-color: #050505;
    --text-color: #e0e0e0;
    --accent-color: #00d4ff;
    --secondary-color: #7000ff;
    --success-color: #00ffaa;
    --error-color: #ff0055;
    --font-main: 'Noto Sans JP', sans-serif;
    --font-heading: 'Orbitron', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 2rem 1rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    letter-spacing: 0.5rem;
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-color);
}

/* Main Content */
main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

#hero {
    text-align: center;
    max-width: 800px;
}

.status-badge {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    padding: 0.3rem 1rem;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 20px;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

.glitch {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    position: relative;
    color: var(--text-color);
}

.subtitle {
    margin-top: 1rem;
    font-size: 1.1rem;
    opacity: 0.8;
}

/* Game Styles */
#game-container {
    width: 100%;
    max-width: 600px;
    background: rgba(20, 20, 20, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
    position: relative;
    backdrop-filter: blur(10px);
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--success-color);
}

.icon-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.icon-btn:hover {
    transform: scale(1.1);
}

#canvas-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #000;
    border-radius: 4px;
    overflow: hidden;
}

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

/* Overlays */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    z-index: 10;
    transition: opacity 0.5s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.overlay-content p {
    margin-bottom: 2rem;
}

.primary-btn {
    font-family: var(--font-heading);
    padding: 1rem 2rem;
    background: var(--accent-color);
    border: none;
    color: #000;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px var(--accent-color);
}

.primary-btn:hover {
    background: var(--success-color);
    box-shadow: 0 0 25px var(--success-color);
    transform: translateY(-2px);
}

.game-footer {
    margin-top: 1rem;
    text-align: center;
}

.controls-hint {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Animations */
@keyframes pulse {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}

/* Game Over Shake Animation */
.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
    transform: translate3d(0, 0, 0);
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.8rem;
    opacity: 0.5;
}

@media (max-width: 600px) {
    .glitch { font-size: 2.2rem; }
    .logo { font-size: 1.8rem; }
    #hero { padding: 0 1rem; }
}