body {
    background-color: #282c34;
    color: white;
    font-family: "Google Sans", sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 2rem 0;
}

header {
    text-align: center;
    width: 100%;
    padding: 1rem 0;
}

.title-container {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 1.5rem;
    flex-wrap: wrap;
}

h1 {
    font-size: 2.5rem;
    margin: 0;
}

#pm25-container {
    position: fixed;
    top: 5px;
    right: 5px;
    z-index: 1000;
    font-size: 1.2rem;
    padding: 1rem 1rem;
    border-radius: 10px;
}

.update-time {
    text-align: center;
    margin-top: 0.5rem;
    color: #ccc;
    font-size: 1.2rem;
}

.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 1.5rem;
    padding: 1.5rem;
    width: 95%;
    max-width: 1400px;
    box-sizing: border-box;
}

.column {
    display: grid;
    gap: 1.5rem;
}

.card {
    background-color: #3c4049;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card.thai-gold {
    height: 100%;
    box-sizing: border-box;
}

.card h2 {
    font-size: 1.5rem;
    margin: 0.5rem 0;
    color: #61dafb;
}

.price {
    font-size: 2.2rem;
    font-weight: bold;
    margin: 0.5rem 0;
}

.card hr {
    border: 0;
    border-top: 1px solid #555;
    margin: 1rem 0;
}

/* ⭐ เพิ่ม .change กลับมา - สำคัญมาก! */
.change {
    font-size: 1.2rem;
    margin-top: 0.5rem;
}

.price-up span {
    color: #4caf50;
}

.price-down span {
    color: #f44336;
}

.price-moderate { 
    color: #ffeb3b; 
}

.price-sensitive { 
    color: #ff9800; 
}

.price-very-unhealthy { 
    color: #9c27b0; 
}

.iframe-container {
    justify-content: center;
    align-items: center;
}

/* Responsive */
@media (max-width: 1200px) {
    .dashboard {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    body {
        height: auto;
        justify-content: flex-start;
    }

    .dashboard {
        grid-template-columns: 1fr;
    }
}