:root {
    --primary: #00f2ff;
    --secondary: #7000ff;
    --bg: #050505;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text: #ffffff;
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Outfit', sans-serif;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

#game-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

#game-canvas {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #101020 0%, #050505 100%);
    display: block;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: none;
    z-index: 10;
}

#start-screen, #game-over-screen {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 3rem;
    border-radius: 24px;
    text-align: center;
    pointer-events: auto;
    max-width: 500px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 242, 255, 0.1);
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
}

#start-screen.hidden, #game-over-screen.hidden {
    display: none;
    opacity: 0;
    transform: scale(0.9) translateY(20px);
}

h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.15em;
    filter: drop-shadow(0 0 10px rgba(0, 242, 255, 0.3));
}

p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    line-height: 1.6;
}

button {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2), 0 0 15px rgba(0, 242, 255, 0.4);
    text-transform: uppercase;
}

button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3), 0 0 25px rgba(0, 242, 255, 0.6);
}

button.hidden {
    display: none;
}

/* Loading Bar */
.loader-container {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    height: 8px;
    border-radius: 4px;
    margin-bottom: 1rem;
    overflow: hidden;
    position: relative;
}

#loading-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.3s ease;
}

#loading-text {
    font-size: 0.9rem;
    opacity: 0.6;
    display: block;
    margin-bottom: 2rem;
}

/* HUD */
#game-hud {
    position: absolute;
    top: 2rem;
    left: 2rem;
    display: flex;
    gap: 2rem;
    pointer-events: none;
}

.hud-item {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.5);
}

#game-hud.hidden {
    display: none;
}

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

.back-to-dashboard-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 99999;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(15, 15, 25, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    color: #fff;
    text-decoration: none;
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}
.back-to-dashboard-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 25px rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}
.back-to-dashboard-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}