/* --- Global Variables and Reset --- */
:root {
    --primary-color: #00bcd4; /* Cyan/Teal Accent */
    --secondary-color: #ff9800; /* Orange/Gold Accent for Price/Sale */
    --background-dark: #212529; /* Dark Background */
    --background-light: #f8f9fa; /* Light Section Background (rarely used in dark theme) */
    --text-light: #ffffff;
    --text-dark: #343a40;
    --card-background: #343a40; /* Darker Card background */
    --box-shadow-dark: 0 8px 16px rgba(0, 0, 0, 0.4);
    --transition-time: 0.3s;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--background-dark);
    color: var(--text-light);
    line-height: 1.6;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-time);
}

a:hover {
    color: var(--secondary-color);
}

/* --- Navigation Bar --- */
.navbar {
    background-color: #1a1e21; /* Slightly darker than body */
    padding: 1rem 30px;
    box-shadow: var(--box-shadow-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.navbar-links a {
    color: var(--text-light);
    margin-left: 20px;
    font-size: 1rem;
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color var(--transition-time), color var(--transition-time);
}

.navbar-links a:hover {
    background-color: var(--primary-color);
    color: var(--background-dark);
}

/* --- Main Container Layout (Main Page) --- */
.container {
    display: flex;
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
    gap: 30px;
}

/* --- Sidebar/Filters (Main Page) --- */
.sidebar {
    flex: 0 0 250px;
    background-color: var(--card-background);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--box-shadow-dark);
    height: fit-content;
    position: sticky; /* Sticky sidebar for better usability */
    top: 80px;
}

.sidebar h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    border-bottom: 2px solid #555;
    padding-bottom: 10px;
}

.filter-group {
    margin-bottom: 20px;
    padding: 10px 0;
    border-bottom: 1px dashed #444;
}

.filter-group h3 {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.filter-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.95rem;
    cursor: pointer;
}

.filter-group input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--primary-color);
}

/* Custom range style for RAM filter */
.filter-group input[type="range"] {
    width: 100%;
    margin-top: 10px;
    accent-color: var(--primary-color);
}

.filter-group .range-value {
    display: block;
    text-align: right;
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-top: 5px;
}

.apply-button {
    display: block;
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    background-color: var(--secondary-color);
    color: var(--text-dark);
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity var(--transition-time), background-color var(--transition-time);
    font-weight: bold;
}

.apply-button:hover {
    background-color: #ffb74d; /* Lighter orange on hover */
    opacity: 0.9;
}


/* --- Product Grid (main Page) --- */
.product-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    align-content: start; /* Prevents stretching */
}

.product-card {
    background-color: var(--card-background);
    padding: 15px;
    border-radius: 8px;
    box-shadow: var(--box-shadow-dark);
    transition: transform var(--transition-time), box-shadow var(--transition-time);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.6);
}

.product-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 15px;
    border: 1px solid #555;
}

.product-card h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 5px;
    flex-grow: 1;
}

.product-card .price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin: 10px 0;
}

.product-card p {
    font-size: 0.9rem;
    color: #ccc;
    margin-bottom: 10px;
}

.product-card .view-button {
    display: block;
    padding: 10px;
    background-color: var(--primary-color);
    color: var(--text-dark);
    text-align: center;
    border-radius: 5px;
    transition: background-color var(--transition-time);
    font-weight: bold;
    margin-top: 10px;
}

.product-card .view-button:hover {
    background-color: #4dd0e1; /* Lighter cyan on hover */
}

/* --- Product Details Specific Styling --- */
.product-detail-layout {
    display: flex;
    flex-wrap: wrap;
    max-width: 1100px;
    margin: 30px auto;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 10px;
    box-shadow: var(--box-shadow-dark);
    gap: 30px;
}

.image-gallery { flex: 1 1 500px; min-width: 300px; }
.main-image { 
    width: 100%; 
    height: 400px; 
    object-fit: contain; 
    border: 1px solid #495057; 
    margin-bottom: 10px; 
    border-radius: 6px; 
    cursor: zoom-in;
}
.thumbnail-container { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 10px; }
.thumbnail { 
    width: 80px; 
    height: 80px; 
    object-fit: cover; 
    border-radius: 4px; 
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}
.thumbnail:hover, .thumbnail.active {
    border-color: var(--primary-color);
}
.product-info { flex: 1 1 400px; padding: 10px; }
.product-info h1 {
    color: var(--primary-color);
    font-size: 2.2rem;
    margin-bottom: 10px;
}
.price-details { 
    font-size: 1.8rem; 
    color: var(--secondary-color); 
    font-weight: bold; 
    margin-bottom: 20px; 
    padding: 10px 0; 
    border-bottom: 1px solid #495057; 
    border-top: 1px solid #495057; 
}
.short-desc {
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 30px;
}
.buy-button {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: var(--secondary-color);
    color: var(--text-dark);
    text-align: center;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 30px;
    transition: background-color var(--transition-time);
}
.buy-button:hover {
    background-color: #ffb74d;
}

.specs h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 10px;
    border-bottom: 1px solid #495057;
    padding-bottom: 5px;
}
.specs ul {
    list-style: none;
    padding: 0;
}
.specs ul li {
    color: #ccc;
    padding: 8px 0;
    border-bottom: 1px dotted #555;
}
.specs ul li strong {
    color: var(--text-light);
    display: inline-block;
    min-width: 100px;
}


/* --- Form and Content Pages Specific --- */
.content-page, .form-container {
    max-width: 900px;
    margin: 30px auto;
    padding: 40px;
    background-color: var(--card-background);
    border-radius: 10px;
    box-shadow: var(--box-shadow-dark);
}
.content-page h1, .form-container h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}
.content-page h2, .form-container h2 {
    color: var(--secondary-color);
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-light);
    font-weight: 500;
}
.form-group input, .form-group textarea, .form-group .form-input, .form-group .form-textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #6c757d;
    border-radius: 4px;
    background-color: #495057; /* Dark input fields */
    color: var(--text-light);
    font-size: 1rem;
}
.form-group textarea {
    resize: vertical;
}

/* Django Form Specific Styling */
.django-form-container {
    padding: 20px 0;
}
.django-form-container ul {
    list-style: none;
    padding: 0;
}
.django-form-container li {
    margin-bottom: 20px;
}
.django-form-container label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-light);
    font-weight: 500;
}

/* Separate group layout for city/pincode on checkout */
.form-row {
    display: flex;
    gap: 20px;
}
.form-column {
    flex: 1;
}

.submit-button, .contact-button {
    display: block;
    width: 100%;
    padding: 15px;
    margin-top: 30px;
    background-color: var(--primary-color);
    color: var(--text-dark);
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color var(--transition-time);
    font-weight: bold;
}
.submit-button:hover, .contact-button:hover {
    background-color: #4dd0e1;
}

/* Django Messages Styling */
.messages {
    list-style: none;
    padding: 15px;
    margin: 20px auto;
    max-width: 900px;
    border-radius: 8px;
    text-align: center;
}
.messages li.success {
    background-color: #4CAF50; /* Green */
    color: white;
}
.messages li.error {
    background-color: #f44336; /* Red */
    color: white;
}
.messages li.warning {
    background-color: #ff9800; /* Orange */
    color: black;
}


/* --- Footer --- */
.footer {
    background-color: #1a1e21;
    color: #999;
    padding: 20px 0;
    margin-top: 50px;
    text-align: center;
    border-top: 1px solid #333;
}

/* --- Responsive Design --- */
@media (max-width: 992px) {
    .container {
        flex-direction: column;
    }
    .sidebar {
        flex: 0 0 auto;
        width: 100%;
        position: static;
        margin-bottom: 20px;
    }
    .product-detail-layout {
        flex-direction: column;
        padding: 20px;
        margin: 20px;
    }
    .main-image {
        height: 300px;
    }
    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 600px) {
    .navbar {
        padding: 1rem 15px;
    }
    .navbar-links a {
        margin-left: 10px;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
    .content-page, .form-container {
        padding: 20px;
        margin: 15px;
    }
    .form-group input, .form-group textarea, .form-group .form-input, .form-group .form-textarea {
        font-size: 0.9rem;
    }
}