:root {
    /* Color Palette - Modern & Professional */
    --primary: #00CDFA;
    /* Primary Color */
    --primary-dark: #00a6cb;
    --secondary: #FF3366;
    /* Vibrant Pink */
    --accent: #f59e0b;
    /* Attention/Action Orange */
    --background: #ffffff;
    --foreground: #0f172a;
    --muted: #f8fafc;
    --muted-foreground: #64748b;
    --border: #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.2);
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --container-max: 1280px;
    --section-padding: 5rem 1rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #020617;
        --foreground: #f8fafc;
        --muted: #1e293b;
        --muted-foreground: #94a3b8;
        --border: #334155;
        --glass-bg: rgba(15, 23, 42, 0.8);
        --glass-border: rgba(255, 255, 255, 0.1);
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography Utility */
h1,
h2,
h3,
h4 {
    line-height: 1.2;
    font-weight: 700;
}

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

/* Layout */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--border);
    color: var(--foreground);
}

.btn-outline:hover {
    background-color: var(--muted);
    border-color: var(--primary);
}

/* Glassmorphism Classes */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 8rem 1rem 6rem;
    text-align: center;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, rgba(37, 99, 235, 0) 70%);
    z-index: -1;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--muted-foreground);
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.75rem 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    font-weight: 500;
    color: var(--muted-foreground);
}

nav a:hover,
nav a.active {
    color: var(--primary);
}

@media (max-width: 768px) {
    nav {
        display: none;
    }
}

/* Product Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    padding: 2.5rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    background: var(--background);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--card-shadow);
    border-color: var(--primary);
}

.card-icon {
    width: 3.5rem;
    height: 3.5rem;
    background: var(--muted);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary);
    font-size: 1.5rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.animate-fade-in {
    animation: fadeIn 0.8s forwards;
}

/* Tabs Interface */
.tabs-container {
    margin-top: 2rem;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 2rem;
    border: 1px solid var(--border);
    background: var(--background);
    color: var(--muted-foreground);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 205, 250, 0.3);
}

.tab-panel {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.tab-panel.active {
    display: block;
}

@media (max-width: 640px) {
    .tabs-nav {
        gap: 0.5rem;
    }

    .tab-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
}

/* Footer Links Styling */
.footer-links {
    list-style: none;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--muted-foreground);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 2px;
}