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

:root {
    --primary: #BB86FC;
    --primary-variant: #3700B3;
    --secondary: #03DAC6;
    --background: #121212;
    --surface: #1E1E1E;
    --error: #CF6679;
    --on-primary: #000000;
    --on-secondary: #000000;
    --on-background: #FFFFFF;
    --on-surface: #FFFFFF;
    --on-error: #000000;
}

body {
    font-family: 'Roboto', 'Segoe UI', sans-serif;
    background-color: var(--background);
    color: var(--on-background);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.container {
    background-color: var(--background);
    min-height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    position: relative;
}

h1 {
    color: var(--primary);
    padding: 1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
    background: rgba(18, 18, 18, 0.8);
    border-bottom-right-radius: 16px;
    backdrop-filter: blur(8px);
}

.controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    z-index: 10;
    background: rgba(18, 18, 18, 0.8);
    padding: 1rem;
    border-radius: 16px;
    backdrop-filter: blur(8px);
}

button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--surface);
    color: var(--on-surface);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

button::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.3s;
}

button:hover::after {
    opacity: 1;
}

button:active {
    transform: translateY(1px);
}

#startBtn {
    background-color: var(--primary);
    color: var(--on-primary);
}

#pauseBtn {
    background-color: var(--secondary);
    color: var(--on-secondary);
}

#resetBtn {
    background-color: var(--error);
    color: var(--on-error);
}

.pattern-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--surface);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.pattern-selector label {
    color: var(--on-surface);
    font-weight: 500;
}

select {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 2px solid var(--primary);
    background-color: var(--surface);
    color: var(--on-surface);
    cursor: pointer;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

select:hover, select:focus {
    border-color: var(--secondary);
}

#gameCanvas {
    background-color: var(--background);
    cursor: pointer;
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}