:root {
    /* Global Theme Configuration */
    /* Primary: The main dark base color (e.g., Headers, Footer, Dark Backgrounds) */
    --color-primary: #0f172a;
    /* Slate 900 */
    --color-primary-light: #1e293b;
    /* Slate 800 */

    /* Secondary: The accent/action color (e.g., Buttons, Highlights, Icons) */
    --color-secondary: #facc15;
    /* Yellow 400 */
    --color-secondary-hover: #eab308;
    /* Yellow 500 */

    /* Neutrals */
    --color-bg-gray: #f3f4f6;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Poppins', sans-serif;
}

.glass-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.scrollbar-hide::-webkit-scrollbar {
    display: none;
}

.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.tab-active {
    color: var(--color-primary);
    font-weight: 600;
    border-bottom: 2px solid var(--color-secondary);
}

/* Mobile Menu Styles */
.mobile-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: white;
    z-index: 100;
    transition: left 0.3s ease-in-out;
    overflow-y: auto;
    box-shadow: 4px 0 25px rgba(0, 0, 0, 0.15);
}

.mobile-menu.active {
    left: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Search */
.mobile-search {
    display: none;
    padding: 0 1rem 1rem;
}

/* Hamburger Button Animation */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 24px;
    height: 24px;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Button Styles */
.btn-primary {
    background: var(--color-primary);
    color: white;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--color-secondary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(250, 204, 21, 0.4);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-primary);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--color-secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(250, 204, 21, 0.4);
}

/* Card hover effect */
.product-card {
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

/* Smooth image loading */
img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

img[loading] {
    opacity: 0;
}

/* Custom focus states for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Pulse animation for notifications */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.pulse-animation {
    animation: pulse 2s infinite;
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Toast notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    background: var(--color-primary);
    color: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 90;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-secondary);
    color: var(--color-primary);
    transform: translateY(-3px);
}

/* Responsive Typography */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .mobile-search {
        display: block;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
}

/* Hero responsive adjustments */
@media (max-width: 1024px) {
    .hero-text h2 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-text h2 {
        font-size: 2rem;
    }
    
    .hero-text {
        padding: 1rem;
    }
}

/* Product Grid Responsive */
@media (max-width: 640px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .product-card {
        padding: 0.75rem;
    }
}

/* Footer Responsive */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}

/* Safe area for mobile devices with notch */
@supports (padding-top: env(safe-area-inset-top)) {
    .glass-header {
        padding-top: env(safe-area-inset-top);
    }
    
    footer {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background: var(--color-secondary);
    color: var(--color-primary);
}

/* Print styles */
@media print {
    .no-print,
    header,
    footer,
    .mobile-menu,
    .back-to-top {
        display: none !important;
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}