:root {
    /* Colors */
    --primary: #7e68ff;
    --primary-light: #9d8bff;
    --primary-dark: #6c4ed9;
    --secondary: #00a551;
    --dark-bg: #0c0c15;
    --card-bg: #1a1c2e;
    --sidebar-bg: #111327;
    --button-bg: #2d3349;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --price-green: #00e676;
    --price-red: #ff5252;
    --memory-blue: #4e95ff;

    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-default: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.3);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
}

/* 2. Reset & Base Styles
   ========================================= */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 3. Typography
   ========================================= */
.title {
    font-size: clamp(2rem, 5vw, 4rem);
    text-align: center;
    background: linear-gradient(135deg, #a78bfa 0%, #6366f1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--space-xl);
    font-weight: 800;
    letter-spacing: -0.05em;
}

/* 4. Layout & Container
   ========================================= */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.main-content {
    padding: var(--space-xl) 0 var(--space-xl);
}

.layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

/* 5. Header & Navigation
   ========================================= */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 0;
    background-color: rgba(12, 12, 21, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 1.125rem;
    box-shadow: 0 4px 12px rgba(108, 78, 217, 0.3);
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-item {
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    opacity: 0.8;
    transition: var(--transition-default);
    font-size: 0.875rem;
}

.nav-item:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* 6. Search Component
   ========================================= */
.search-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto var(--space-xl);
}

.search-input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(30, 33, 58, 0.5);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: 'Poppins', sans-serif;
    backdrop-filter: blur(5px);
    transition: var(--transition-default);
    box-shadow: var(--shadow-md);
}

.search-input:focus {
    outline: none;
    background-color: rgba(30, 33, 58, 0.8);
    border-color: var(--primary);
    box-shadow: 0 8px 32px rgba(108, 78, 217, 0.3);
}

.search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

/* 7. Tabs Component
   ========================================= */
   .tabs {
    display: flex;
    background-color: var(--sidebar-bg);
    border-radius: var(--border-radius-lg);
    padding: 8px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    gap: 8px;
}

.tab {
    flex: 1;
    padding: 0.75rem 1.5rem;
    text-align: center;
    cursor: pointer;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    transition: var(--transition-default);
    font-size: 0.9375rem;
    border: none;
    background: transparent;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--secondary);
    opacity: 0;
    transition: opacity var(--transition-default);
    z-index: 1;
    border-radius: inherit;
}

.tab span {
    position: relative;
    z-index: 2;
}

.tab:hover::before {
    opacity: 0.1;
}

.tab.active {
    background-color: var(--secondary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 165, 81, 0.3);
}

.tab.active::before {
    opacity: 0;
}

.tab:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.tab:active {
    transform: scale(0.98);
}

/* 8. Sidebar & Filters
   ========================================= */
.sidebar {
    background-color: var(--sidebar-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    height: fit-content;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 100px;
}

.sidebar-section {
    margin-bottom: var(--space-lg);
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-title {
    font-size: 0.8125rem;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-button {
    display: flex;
    width: 100%;
    padding: 0.75rem;
    text-align: left;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    background-color: transparent;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-default);
    font-family: 'Poppins', sans-serif;
    font-size: 0.875rem;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.filter-button::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-secondary);
    border-radius: 4px;
    transition: all var(--transition-default);
    margin-left: 8px;
}

.filter-button:hover {
    background-color: rgba(45, 51, 73, 0.5);
}

.filter-button:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(126, 104, 255, 0.2);
}

.filter-button.active {
    background-color: var(--button-bg);
    border-left: 3px solid var(--primary);
}

.filter-button.active::after {
    background-color: var(--primary);
    border-color: var(--primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z'/%3E%3C/svg%3E");
    background-size: 12px;
    background-repeat: no-repeat;
    background-position: center;
}
/* 9. GPU Cards
   ========================================= */
.gpu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.gpu-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    overflow: hidden;
    transition: var(--transition-default);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
}

.gpu-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.1);
}

.gpu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.gpu-name {
    font-size: clamp(1.25rem, 3vw, 1.625rem);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.gpu-badge {
    background-color: var(--secondary);
    color: var(--text-primary);
    padding: 5px 10px;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    letter-spacing: 0.5px;
}

.gpu-details {
    display: grid;
    grid-template-columns: 1fr auto;
    row-gap: 15px;
    column-gap: 20px;
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.detail-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.price-green {
    color: var(--price-green);
    font-weight: 600;
    font-size: 1rem;
}

.price-red {
    color: var(--price-red);
    font-weight: 600;
    font-size: 1rem;
}

.memory-blue {
    color: var(--memory-blue);
    font-weight: 600;
    font-size: 1rem;
}

.retailers {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.retailers-count {
    background-color: rgba(255, 255, 255, 0.08);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
}

.view-details {
    color: var(--primary-light);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 600;
    transition: var(--transition-default);
    font-size: 0.875rem;
}

.view-details:hover {
    color: var(--primary);
}

.view-details svg {
    transition: var(--transition-default);
}

.view-details:hover svg {
    transform: translateX(3px);
}

/* 10. Buttons & Interactive Elements
   ========================================= */
.sort-buttons {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.sort-button {
    padding: 0.75rem 1.25rem;
    background-color: var(--button-bg);
    border: none;
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-default);
    font-family: 'Poppins', sans-serif;
    font-size: 0.875rem;
}

.sort-button:hover {
    background-color: rgba(45, 51, 73, 0.8);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* 11. Utilities
   ========================================= */
.section-title {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    margin-bottom: var(--space-lg);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.section-title::before {
    content: "";
    display: block;
    width: 4px;
    height: 22px;
    background-color: var(--primary);
    border-radius: 2px;
}

/* ... (previous CSS remains the same until media queries) ... */

/* 12. Media Queries
   ========================================= */
   @media (max-width: 1400px) {
    .container {
        padding: 0 var(--space-md);
    }

    .gpu-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--space-md);
    }
}

@media (max-width: 1200px) {
    .layout {
        gap: var(--space-md);
    }

    .gpu-card {
        padding: var(--space-md);
    }

    .sidebar {
        width: 240px;
    }
}

@media (max-width: 1024px) {
    .layout {
        grid-template-columns: 220px 1fr;
    }

    .title {
        font-size: clamp(1.75rem, 4vw, 3rem);
    }

    .sidebar {
        padding: var(--space-md);
    }
}

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        width: 100%;
    }

    .gpu-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }

    .header {
        padding: var(--space-md);
    }
}

@media (max-width: 768px) {
    :root {
        --space-xl: 1.5rem;
        --space-lg: 1.25rem;
        --space-md: 1rem;
        --space-sm: 0.5rem;
    }

    .header {
        padding: 12px var(--space-md);
    }

    .logo {
        font-size: 1.125rem;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }

    .nav {
        gap: var(--space-md);
    }

    .nav-item {
        font-size: 0.8125rem;
    }

    .search-input {
        padding: 0.875rem 1rem 0.875rem 3rem;
    }

    .tabs {
        flex-direction: column;
        gap: 8px;
        padding: var(--space-sm);
    }

    .tab {
        padding: 0.625rem;
    }

    .sort-buttons {
        flex-wrap: wrap;
    }

    .sort-button {
        flex: 1;
        min-width: 150px;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
        gap: var(--space-sm);
        padding: var(--space-sm);
    }

    .nav {
        width: 100%;
        justify-content: space-between;
    }

    .search-container {
        margin-bottom: var(--space-md);
    }

    .search-input {
        font-size: 0.875rem;
        padding: 0.75rem 1rem 0.75rem 2.5rem;
    }

    .search-icon {
        left: 12px;
        width: 16px;
        height: 16px;
    }

    .gpu-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .gpu-card {
        padding: var(--space-md);
    }

    .gpu-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .gpu-name {
        font-size: 1.25rem;
    }

    .retailers {
        flex-direction: column;
        gap: var(--space-sm);
        align-items: flex-start;
    }

    .view-details {
        width: 100%;
        justify-content: space-between;
    }
}

/* 13. Dark Mode Support
   ========================================= */
@media (prefers-color-scheme: dark) {
    :root {
        --dark-bg: #0c0c15;
        --card-bg: #1a1c2e;
        --sidebar-bg: #111327;
    }
}

/* 14. Reduced Motion
   ========================================= */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 15. Print Styles
   ========================================= */
@media print {
    .header,
    .search-container,
    .tabs-container,
    .sidebar,
    .sort-buttons,
    .retailers,
    .view-details {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .gpu-card {
        break-inside: avoid;
        border: 1px solid #ccc;
        margin-bottom: 20px;
        background: white;
        color: black;
    }

    .title {
        color: black;
        -webkit-text-fill-color: black;
    }
}

/* 16. High Contrast Mode
   ========================================= */
@media (forced-colors: active) {
    :root {
        --primary: CanvasText;
        --text-primary: CanvasText;
        --text-secondary: CanvasText;
    }

    .gpu-card,
    .sidebar,
    .tabs {
        border: 2px solid CanvasText;
    }
}

/* 17. Loading States
   ========================================= */
.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* 18. Scroll Behavior
   ========================================= */
.smooth-scroll {
    scroll-behavior: smooth;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--button-bg);
    border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}