* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: linear-gradient(160deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    color: #f0f0f5;
    min-height: 100vh;
}

.site-header {
    text-align: center;
    padding: 1.5rem 1rem 0.5rem;
}

.site-header h1 {
    margin: 0;
    font-size: 1.75rem;
    letter-spacing: 0.02em;
}

.tagline {
    margin: 0.5rem 0 0;
    opacity: 0.85;
    font-size: 0.95rem;
}

.panel {
    max-width: 860px;
    margin: 1rem auto 2rem;
    padding: 1.25rem;
    background: rgba(0, 0, 0, 0.35);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.panel h2 {
    margin-top: 0;
}

#link-form {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

#link-code {
    flex: 1;
    min-width: 160px;
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(0, 0, 0, 0.4);
    color: inherit;
    font-size: 1rem;
    text-transform: uppercase;
}

button {
    padding: 0.6rem 1rem;
    border: none;
    border-radius: 8px;
    background: #e94560;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
}

button:hover {
    background: #ff6b6b;
}

.error {
    color: #ff8a8a;
    margin-top: 0.75rem;
}

.hud {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.hud-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.hud-actions {
    display: flex;
    gap: 0.5rem;
}

#game-canvas {
    display: block;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-radius: 8px;
    border: 2px solid rgba(83, 216, 251, 0.4);
    outline: none;
    background: #1a1a2e;
}

.status {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    opacity: 0.9;
    min-height: 1.2em;
}

code {
    background: rgba(255, 255, 255, 0.12);
    padding: 0.1em 0.35em;
    border-radius: 4px;
}