:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark-bg: #f8fafc;
    /* Now Light BG */
    --card-bg: rgba(255, 255, 255, 0.85);
    /* White Glass */
    --text-light: #0f172a;
    /* Now Dark Text */
    --text-dim: #64748b;
    --glass-border: 1px solid rgba(0, 0, 0, 0.08);
    /* Darker border for light bg */
    --font-main: 'Outfit', sans-serif;
    --nav-height: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* Utilities */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

.section-padding {
    padding: 6rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Top Bar */
.top-bar {
    background: #f1f5f9;
    /* Light Grey */
    color: var(--text-dim);
    font-size: 0.85rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
}

.top-bar-links {
    display: flex;
    gap: 1.5rem;
}

.top-bar a:hover {
    color: var(--primary);
}

/* Advanced Navbar */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    /* White Glass */
    backdrop-filter: blur(12px);
    border-bottom: var(--glass-border);
    height: auto;
    padding: 0.75rem 0;
    z-index: 1000;
}

.nav-container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-image {
    width: 40px;
    height: 40px;
    color: var(--primary);
    flex-shrink: 0;
}

.logo-main {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-light);
    display: block;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: block;
    margin-top: -5px;
}

/* Search Bar */
.search-bar {
    position: relative;
    max-width: 600px;
    width: 100%;
}

.search-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.05);
    /* Darker tint for input */
    border: 1px solid rgba(0, 0, 0, 0.1);
    padding: 0.8rem 1rem 0.8rem 3rem;
    border-radius: 50px;
    color: var(--text-light);
    font-size: 0.95rem;
    transition: all 0.3s;
}

.search-input:focus {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    width: 18px;
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-dim);
    cursor: pointer;
}

.action-item:hover {
    color: var(--primary);
}

.action-icon-box {
    position: relative;
    margin-bottom: 2px;
}

.badge {
    position: absolute;
    top: -5px;
    right: -8px;
    background: var(--accent);
    color: #000;
    font-weight: bold;
    font-size: 0.7rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Category Menu (Below Main Header) */
.cat-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    margin-top: 0.5rem;
}

.cat-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-light);
    opacity: 0.8;
}

.cat-link:hover {
    opacity: 1;
    color: var(--primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    /* Ensure visible on light bg */
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    transition: right 0.3s ease;
    z-index: 10001;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

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

/* Mobile Menu Link Styles */
.nav-link-mobile:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* Responsive Overrides */
@media (max-width: 968px) {
    .nav-container {
        grid-template-columns: 1fr auto;
        gap: 1rem;
        padding: 0.5rem 0;
    }

    /* Hide search bar and category nav on mobile */
    .search-bar,
    .cat-nav {
        display: none;
    }

    .top-bar-links {
        display: none;
    }

    /* Mobile nav actions */
    .nav-actions {
        display: flex;
        gap: 0.8rem;
        align-items: center;
    }

    /* Show menu toggle */
    .menu-toggle {
        display: flex !important;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
    }

    /* Hide desktop-only action items on mobile */
    .nav-actions>.action-item:not([href="cart.html"]) {
        display: none !important;
    }

    /* Ensure cart is visible on mobile */
    .nav-actions>a[href="cart.html"].action-item {
        display: flex !important;
        position: relative;
    }

    /* Hide text labels on mobile, keep icons */
    .action-item span {
        display: none;
    }

    /* Compact action icons */
    .action-icon-box {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Ensure cart badge is visible and positioned correctly */
    .badge {
        display: flex !important;
        position: absolute;
        top: 0;
        right: 0;
        font-size: 0.65rem;
        min-width: 16px;
        height: 16px;
        padding: 2px 4px;
        border-radius: 10px;
    }

    /* Logo adjustments for mobile - keep full text visible */
    .logo {
        gap: 0.6rem;
        flex: 1;
    }

    .logo-image {
        width: 32px;
        height: 32px;
    }

    .logo-main {
        font-size: 1.2rem;
        white-space: nowrap;
    }

    /* Keep subtitle visible but smaller */
    .logo-sub {
        font-size: 0.6rem;
        display: block;
    }

    /* Navbar padding */
    .navbar {
        padding: 0.5rem 0;
    }
}

/* Hero Section */
.hero {
    position: relative;
    height: 90vh;
    /* Slightly smaller for pro feel */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
    margin-bottom: 3rem;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-dim);
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Blobs */
.blob {
    position: absolute;
    filter: blur(80px);
    z-index: 0;
    opacity: 0.6;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: purple;
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: var(--primary-dark);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

/* =========================================
   MOBILE RESPONSIVENESS FIXES
   ========================================= */
@media (max-width: 768px) {

    /* Stack generic grids */
    [style*="grid-template-columns: 1fr 1fr"],
    [style*="grid-template-columns: auto 1fr"],
    [style*="grid-template-columns: 250px 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    .section-padding {
        padding: 3rem 0;
    }

    .hero h1 {
        font-size: 2.5rem !important;
    }

    .hero p {
        font-size: 1rem !important;
    }

    /* Stats Grid */
    .container>div>div[style*="grid-template-columns: repeat(3"] {
        grid-template-columns: 1fr !important;
    }

    /* Certificate Grid */
    #certificates div[style*="grid-template-columns"] {
        grid-template-columns: 1fr 1fr !important;
        /* 2 cols on tablet */
    }

    /* Top bar - stack on mobile */
    .top-bar .container {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .top-bar-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {

    /* Product Catalog Page Layout */
    .container[style*="grid-template-columns: 250px 1fr"] {
        display: flex !important;
        flex-direction: column;
    }

    /* Product Sidebar */
    aside.glass {
        width: 100%;
        margin-bottom: 2rem;
        overflow-x: auto;
    }

    #cat-filter {
        flex-direction: row !important;
        gap: 1rem;
        padding-bottom: 5px;
    }

    #cat-filter li {
        white-space: nowrap;
        background: rgba(0, 0, 0, 0.05);
        padding: 0.5rem 1rem;
        border-radius: 50px;
    }

    /* Certificates - stack on phone */
    #certificates div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    /* Global Section Padding */
    .section-padding {
        padding: 3rem 0 !important;
    }

    /* Mobile Menu Z-Index Fix */
    .navbar {
        z-index: 1000;
    }

    .mobile-menu {
        z-index: 9999;
    }

    .mobile-overlay {
        z-index: 998;
    }

    .admin-only {
        display: none !important;
    }
}

/* Toast Animations */
@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* AI Chat Mobile Responsiveness */
@media (max-width: 768px) {
    #ai-chat-window {
        bottom: 80px !important;
        right: 10px !important;
        left: 10px !important;
        width: auto !important;
        max-width: none !important;
    }

    #ai-chat-btn {
        bottom: 10px !important;
        right: 10px !important;
    }
}