:root {
    --primary: #3b82f6;
    --dark: #0f172a;
    --light: #f8fafc;
    --grey: #334155;
    --text: #cbd5e1;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Vazirmatn', Tahoma, sans-serif;
}

body {
    background-color: var(--dark);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Header */
header {
    background: rgba(15, 23, 42, 0.9);
    padding: 20px 0;
    position: sticky;
    top: 0;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #1e293b;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
}
.logo span { color: var(--primary); }

nav ul { display: flex; gap: 20px; align-items: center; }
nav a { font-size: 0.9rem; transition: 0.3s; }
nav a:hover { color: var(--primary); }

/* Buttons */
.btn-primary {
    background: var(--primary);
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    transition: 0.3s;
}
.btn-primary:hover { background: #2563eb; }

.btn-secondary {
    border: 1px solid var(--grey);
    padding: 10px 20px;
    border-radius: 5px;
    margin-right: 10px;
}

/* Hero Section */
.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at top left, #1e293b, transparent 40%),
                radial-gradient(circle at bottom right, #172554, transparent 40%);
}

.hero h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px;
    color: #94a3b8;
}

/* Services */
.services { padding: 80px 0; }
.section-title { text-align: center; font-size: 2rem; margin-bottom: 50px; color: #fff; }

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

.card {
    background: #1e293b;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #334155;
    transition: 0.3s;
}
.card:hover { transform: translateY(-5px); border-color: var(--primary); }

.icon { font-size: 2.5rem; margin-bottom: 20px; }
.card h3 { color: #fff; margin-bottom: 10px; }

/* Footer */
footer {
    background: #020617;
    text-align: center;
    padding: 60px 0 20px;
    border-top: 1px solid #1e293b;
}

.contact-info {
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    color: #94a3b8;
}

.copyright {
    font-size: 0.8rem;
    margin-top: 40px;
    opacity: 0.5;
}

/* Mobile */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    nav ul { display: none; } /* منو ساده برای موبایل مخفی شده */
}