/* --- Fashion Store Color Palette: "Monochrome & Slate" --- */
:root {
    --color-light-bg: #fdfdfd;          /* Near White for main background */
    --color-card-bg: #ffffff;           /* Pure White for product cards */
    --color-primary-accent: #34495e;    /* Slate Gray/Dark Blue for main accent */
    --color-primary-hover: #2c3e50;     /* Darker Slate on hover */
    --color-text-dark: #1f2a37;         /* Very Dark Charcoal */
    --color-text-dim: #7f8c8d;          /* Soft Gray for descriptions */
    --color-border: #e6e6e6;            /* Light border color */
    --spacing-unit: 1rem;
}

body {
    font-family: 'Arial', sans-serif; 
    background-color: var(--color-light-bg);
    color: var(--color-text-dark);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* --- Header Styling --- */
.main-header {
    background-color: var(--color-card-bg);
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); 
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-header h1 {
    margin: 0;
    font-weight: 700; 
    color: var(--color-primary-accent); 
    letter-spacing: 1px;
    text-transform: uppercase;
}

.main-header a {
    color: var(--color-text-dark);
    text-decoration: none;
    margin-left: var(--spacing-unit);
    padding: 0.5rem 0.75rem;
    font-weight: 500;
    transition: color 0.3s;
}

.main-header a:hover {
    color: var(--color-primary-accent);
}

/* --- Product Grid and Card Styling (Robust Grid) --- */
.product-grid-container {
    display: grid; 
    grid-template-columns: repeat(4, 1fr); 
    gap: 1.5rem; 
    padding: 1.5rem; 
    max-width: 1280px; 
    margin: 0 auto;
}

/* Fallback for smaller screens (e.g., tablets) */
@media (max-width: 1024px) {
    .product-grid-container {
        grid-template-columns: repeat(3, 1fr);
    }
}
/* Fallback for mobile screens */
@media (max-width: 600px) {
    .product-grid-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
        padding: 0.5rem;
    }
}


.product-card {
    background-color: var(--color-card-bg);
    border-radius: 0; 
    padding: 0; 
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.05); /* Added subtle base shadow */
    border: 1px solid var(--color-border); 
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s; /* Add transition for smoothness */
}

.product-card:hover {
    /* 💡 HIGHLIGHT EFFECT: Lift the card and add a stronger shadow/border */
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2); 
    transform: translateY(-5px); /* Subtle lift effect */
    border-color: var(--color-primary-accent); /* Highlight border color */
}

.product-image {
    width: 100%;
    height: 300px; 
    object-fit: cover; 
    display: block; 
    border-radius: 0;
    border: none;
}

.product-info {
    padding: 0.75rem;
    flex-grow: 1;
}

.product-title {
    font-size: 1rem;
    font-weight: 600; 
    margin: 0 0 0.15rem 0;
    color: var(--color-text-dark);
}

.product-description {
    display: none; 
}

.product-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary-accent); 
    margin-bottom: 0.75rem; 
    text-align: left; 
    margin-top: 0.25rem; 
}

.add-to-cart-btn {
    background-color: var(--color-primary-accent); 
    color: var(--color-card-bg); 
    border: none;
    padding: 0.7rem; 
    border-radius: 0; 
    cursor: pointer;
    font-size: 0.95rem; 
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: 100%; 
    transition: background-color 0.3s;
}

.add-to-cart-btn:hover {
    background-color: var(--color-primary-hover); 
}

/* --- Loading Spinner Styling --- */
#loading-spinner {
    text-align: center;
    padding: 20px;
    font-size: 1.2rem;
    color: var(--color-primary-accent);
    display: none; 
}