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

body {
    background-color: #030712;
    color: #ffffff;
    font-family: system-ui, -apple-system, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    touch-action: none; /* Bloqueia gestos nativos do navegador no mobile */
}

.game-container {
    position: relative;
    width: 100%;
    max-width: 480px;
    height: 100vh;
    max-height: 640px;
    background: #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.9);
    border-radius: 12px;
    overflow: hidden;
}

/* --- Header do Jogo (Ajuste no Z-INDEX) --- */
.game-header {
    width: 100%;
    padding: 12px 18px;
    background: rgba(15, 23, 42, 0.95);
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* ALTERAÇÃO AQUI: z-index alterado de 10 para 30 */
    z-index: 30; 
    border-bottom: 1px solid #334155;
    position: relative; /* Garante que o z-index funcione corretamente */
}

/* --- Header do Jogo com Logo Clicável --- */
.logo-link {
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease;
}

.logo-link:hover {
    transform: scale(1.03);
}

.logo-link h1 {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-link h1 span {
    color: #3b82f6; /* Ou #ec4899 no Neon Flap */
}

.hud {
    font-size: 0.9rem;
    display: flex;
    gap: 15px;
}

.hud strong {
    color: #f59e0b;
}

#gameCanvas {
    background-color: #020617;
    width: 100%;
    height: 100%;
    touch-action: none;
}

/* --- Overlays (Start / Game Over) --- */
.overlay {
    position: absolute;
    /* ALTERAÇÃO AQUI: Ajusta o topo para não cobrir o cabeçalho */
    top: 50px; /* Altura do header */
    left: 0;
    width: 100%;
    height: calc(100% - 50px); /* Ocupa apenas a área do canvas */
    background: rgba(15, 23, 42, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
    z-index: 20; /* Fica abaixo do header (30) */
    overflow-y: auto;
}

.overlay h1 {
    font-size: 2.2rem;
    color: #3b82f6;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.overlay p {
    color: #94a3b8;
    margin-bottom: 20px;
    font-size: 0.95rem;
    max-width: 320px;
}

.btn {
    background: #2563eb;
    color: #fff;
    border: none;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    width: 100%;
    max-width: 280px;
    margin-top: 8px;
}

.btn:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: #475569;
}

.btn-secondary:hover {
    background: #334155;
}

/* Formulário de Nick & Ranking */
.nick-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 280px;
    margin-bottom: 15px;
}

.nick-form input {
    padding: 10px 14px;
    border-radius: 6px;
    border: 1px solid #334155;
    background: #1e293b;
    color: #fff;
    font-size: 1rem;
    text-align: center;
}

.nick-form input:focus {
    outline: none;
    border-color: #3b82f6;
}

.ranking-container {
    width: 100%;
    max-width: 280px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 15px;
    text-align: left;
}

.ranking-container h3 {
    font-size: 0.9rem;
    color: #f59e0b;
    margin-bottom: 8px;
    text-align: center;
}

.ranking-container ol {
    padding-left: 20px;
    font-size: 0.85rem;
    color: #cbd5e1;
}

.ranking-container li {
    margin-bottom: 4px;
}