/* Core Variables & Design System */
:root {
    --primary: #6C63FF; /* Purple */
    --accent: #FF6584; /* Pink */
    
    /* Light Mode */
    --light-bg: #F5F7FA;
    --light-surface: #FFFFFF;
    --light-text: #2D3748;
    --light-text-muted: #718096;
    
    /* Dark Mode */
    --dark-bg: #1A1A2E;
    --dark-surface: #16213E;
    --dark-text: #E2E8F0;
    --dark-text-muted: #A0AEC0;
    
    /* Misc */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --glass-bg-light: rgba(255, 255, 255, 0.7);
    --glass-bg-dark: rgba(26, 26, 46, 0.7);
    --glass-border-light: rgba(255, 255, 255, 0.18);
    --glass-border-dark: rgba(255, 255, 255, 0.05);
    --hero-overlay: rgba(255, 255, 255, 0.85);
}

/* Base Typo */
body {
    font-family: var(--font-body);
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

/* Light / Dark Mode Classes */
.bg-light-mode {
    background-color: var(--light-bg);
    color: var(--light-text);
}

.bg-light-mode .surface-card {
    background-color: var(--light-surface);
    color: var(--light-text);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.bg-dark-mode {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    --hero-overlay: rgba(15, 15, 30, 0.9);
}

.bg-dark-mode .surface-card {
    background-color: var(--dark-surface);
    color: var(--dark-text);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border-dark);
}

.bg-dark-mode .navbar-brand { color: #fff !important; }

/* Custom Buttons & Colors */
.text-primary-custom { color: var(--primary) !important; }
.bg-primary-custom { background-color: var(--primary) !important; }
.btn-primary-custom {
    background-color: var(--primary) !important;
    color: white !important;
}
.btn-primary-custom:hover {
    background-color: #5B54D8 !important; /* Slightly darker */
}
.text-accent { color: var(--accent) !important; }

.bg-dark-custom {
    background-color: var(--dark-surface) !important;
}

/* Navbar Customization */
.navbar {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.bg-dark-mode .navbar {
    background-color: rgba(22, 33, 62, 0.9) !important;
    border-bottom: 1px solid var(--glass-border-dark);
}
.bg-light-mode .navbar {
    background-color: rgba(255, 255, 255, 0.9) !important;
    border-bottom: 1px solid #e2e8f0;
}
.bg-light-mode .navbar .nav-link,
.bg-light-mode .navbar .navbar-brand {
    color: var(--light-text) !important;
}
.bg-light-mode .navbar .navbar-toggler-icon,
.bg-light-mode .navbar .fas {
    color: var(--light-text);
}

/* Product Cards */
.product-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
    overflow: hidden;
    height: 100%;
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.bg-dark-mode .product-card:hover {
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}
.product-card .card-img-top {
    height: 200px;
    object-fit: cover;
}

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 65px;
    background-color: var(--light-surface);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
    z-index: 1040;
}
.bg-dark-mode .mobile-bottom-nav {
    background-color: var(--dark-surface);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.5);
    border-top: 1px solid var(--glass-border-dark);
}
.mobile-bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--light-text-muted);
    font-size: 0.75rem;
    padding: 8px;
}
.bg-dark-mode .mobile-bottom-nav .nav-item {
    color: var(--dark-text-muted);
}
.mobile-bottom-nav .nav-item.active {
    color: var(--primary);
}
.mobile-bottom-nav .nav-item i {
    font-size: 1.25rem;
    margin-bottom: 4px;
}

/* Utilities */
.rounded-custom { border-radius: 16px !important; }
.shadow-custom { box-shadow: 0 10px 30px rgba(0,0,0,0.08) !important; }

/* Hero Section */
.hero-wrapper {
    position: relative;
    overflow: hidden;
    padding: 80px 0;
}
.bg-light-mode .hero-wrapper {
    background: linear-gradient(135deg, #f5f7fa 0%, #e2e8f0 100%);
    color: var(--light-text);
}
.bg-dark-mode .hero-wrapper {
    background: linear-gradient(135deg, #1A1A2E 0%, #0f0f1e 100%);
    color: var(--dark-text);
}

.bg-dark-mode .hero-wrapper h1, 
.bg-dark-mode .hero-wrapper p {
    color: var(--dark-text) !important;
}

.bg-dark-mode .hero-wrapper .btn-outline-dark {
    background-color: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    color: #fff !important;
}
.bg-dark-mode .hero-wrapper .btn-outline-dark:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
}