:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0f172a;
    --accent: #38bdf8;
    --text: #334155;
    --text-light: #94a3b8;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --border: #e2e8f0;
    --max-width: 1200px;
    --header-height: 70px;
}

/* Dark Mode Support (Optional base, but sticking to a clean tech look) */
@media (prefers-color-scheme: dark) {
    :root {
        --primary: #3b82f6;
        --primary-dark: #2563eb;
        --secondary: #f8fafc; /* Text on dark bg */
        --text: #e2e8f0;
        --text-light: #94a3b8;
        --bg: #0f172a;
        --bg-card: #1e293b;
        --border: #334155;
    }
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3 {
    color: var(--secondary);
    line-height: 1.2;
}

h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; }
h2 { font-size: 2rem; font-weight: 600; margin-bottom: 2rem; }
h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
p { margin-bottom: 1rem; color: var(--text); }

.highlight {
    color: var(--primary);
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    margin-left: 10px;
}

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

.full-width {
    width: 100%;
}

/* Header */
.header {
    height: var(--header-height);
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nav-list {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.nav-list a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-list .btn-primary {
    color: white;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text);
    margin: 5px 0;
    transition: 0.3s;
}

/* Hero */
.hero {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-card), var(--bg));
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Products */
.product-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.product-content {
    padding: 30px;
}

.feature-list {
    list-style: none;
    margin-top: 1rem;
}

.feature-list li {
    margin-bottom: 0.5rem;
    padding-left: 20px;
    position: relative;
    color: var(--text-light);
}

.feature-list li::before {
    content: "✓";
    color: var(--primary);
    position: absolute;
    left: 0;
}

/* Contact */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info {
    padding-right: 20px;
}

.info-item {
    margin-top: 20px;
    font-size: 1.1rem;
}

.contact-form {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background-color: var(--bg);
    color: var(--text);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    ring: 2px solid var(--primary);
}

/* Footer */
.footer {
    background-color: var(--bg-card);
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .mobile-menu-btn {
        display: block;
        z-index: 1001;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--bg-card);
        padding: 80px 20px;
        transition: 0.3s ease-in-out;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .grid-2 {
        grid-template-columns: 1fr;
    }
}