body { 
    background-color: #1a202c; 
    color: #e2e8f0; 
    font-family: 'Inter', sans-serif; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    min-height: 100vh; 
    margin: 0; 
    flex-direction: column; 
    padding: 1rem; 
}

/* === Title Screen Styles === */

#loading-message {
    margin-top: 1rem;
}

/* === Game Container & Canvas === */
#game-container { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    background-color: #2d3748; 
    padding: 1rem; 
    border-radius: 1rem; 
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); 
    width: 100%; 
    max-width: 500px; 
}
canvas { 
    background-color: #4a5568; 
    border-radius: 0.5rem; 
    border: 2px solid #a0aec0; 
    touch-action: none; 
    width: 100%; 
    height: auto; 
}

/* === Info Panel (Scores) === */
#info-panel { 
    display: flex; 
    justify-content: space-between;
    width: 100%; 
    margin-top: 1rem; 
    padding: 0 0.5rem; 
}
#info-panel h2 {
    font-size: 1.25rem; /* text-xl */
    font-weight: 700; /* font-bold */
}
#high-score-display {
    color: #f6e05e;
}
#score-display { 
    color: #48bb78; 
}
#lives-display { 
    color: #ef4444; 
}

/* === Controls === */
#controls-container { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    width: 100%; 
}
#game-controls { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    width: 100%; 
    padding: 0 1rem; 
    margin-top: 1rem; 
}
#direction-controls-circle { 
    position: relative; 
    width: 150px; 
    height: 150px; 
    border-radius: 50%; 
    background-color: #4a5568; 
    border: 2px solid #a0aec0; 
    margin-bottom: 0; 
}

/* === Buttons === */
.game-button { 
    padding: 0.75rem 1.5rem; 
    font-size: 1rem; 
    font-weight: 600; 
    color: white; 
    background-image: linear-gradient(to right, #4c51bf, #6b46c1); 
    border: none; 
    border-radius: 9999px; 
    cursor: pointer; 
    transition: all 0.2s ease-in-out; 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); 
}
.game-button:hover { 
    transform: translateY(-2px); 
    background-image: linear-gradient(to right, #6b46c1, #4c51bf); 
}
#shootButton { 
    width: 120px; 
    height: 120px; 
    border-radius: 50%; 
    font-size: 1.5rem; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    padding: 0; 
}
.game-arrow-button { 
    position: absolute; 
    width: 50px; 
    height: 50px; 
    background-color: #2d3748; 
    color: white; 
    font-size: 1.5rem; 
    border: none; 
    border-radius: 50%; 
    cursor: pointer; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    transition: background-color 0.2s ease-in-out; 
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2); 
}
.game-arrow-button:active { 
    background-color: #1a202c; 
}
#upButton { top: 5px; left: 50%; transform: translateX(-50%); }
#downButton { bottom: 5px; left: 50%; transform: translateX(-50%); }
#leftButton { left: 5px; top: 50%; transform: translateY(-50%); }
#rightButton { right: 5px; top: 50%; transform: translateY(-50%); }

/* === Message Box (Game Over) === */
#message-box { 
    position: fixed; 
    top: 50%; 
    left: 50%; 
    transform: translate(-50%, -50%); 
    background-color: #2d3748; 
    padding: 2rem 3rem; 
    border-radius: 1rem; 
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); 
    display: none; 
    z-index: 10; 
    text-align: center; 
}
#message-box h2 {
    font-size: 1.875rem; /* text-3xl */
    font-weight: 700; /* font-bold */
    margin-bottom: 1rem; /* mb-4 */
}
#message-box p {
    font-size: 1.5rem;
}
#message-box button { 
    margin-top: 1rem; 
}

/* === Utility Class === */
.hidden {
    display: none !important;
}
/* === Start Screen Overlay === */
#start-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(26, 32, 44, 0.95); /* #1a202c พร้อมโปร่งใส */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 20;
    text-align: center;
    padding: 2rem;
    backdrop-filter: blur(6px);
}

#start-screen h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #f6e05e; /* ดาวสีเหลือง */
    text-shadow: 0 0 10px rgba(246, 224, 94, 0.6);
}

#start-screen .start-info {
    font-size: 1.25rem;
    color: #e2e8f0;
    margin-bottom: 2rem;
    max-width: 500px;
    line-height: 1.6;
}

/* ปุ่ม Start Screen ใช้สไตล์เดียวกับปุ่มเกม */
.start-button {
    padding: 0.75rem 2rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    background-image: linear-gradient(to right, #4c51bf, #6b46c1);
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    margin-top: 1rem;
}

.start-button:hover {
    transform: translateY(-3px);
    background-image: linear-gradient(to right, #6b46c1, #4c51bf);
}

.start-button:active {
    transform: scale(0.96);
}