:root {
    --aselsan-blue: #0055A6;
    --aselsan-dark: #222831;
    --aselsan-light: #F5F7FA;
    --aselsan-gray: #3A4750;
    --aselsan-accent: #0090D0;
}

body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background: var(--aselsan-light);
    color: var(--aselsan-dark);
    margin: 0;
    padding: 0;
}

header {
    background: var(--aselsan-blue);
    color: #fff;
    padding: 0.5rem 0;
}

.logo {
    font-weight: bold;
    font-size: 1.6rem;
    margin-left: 2rem;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

nav ul {
    display: flex;
    gap: 1.2rem;
    list-style: none;
    margin-right: 2rem;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
nav ul li a:hover {
    color: var(--aselsan-accent);
}

.hero {
    background: linear-gradient(100deg, var(--aselsan-blue) 60%, var(--aselsan-accent) 100%);
    color: #fff;
    padding: 4rem 2rem 2rem 2rem;
    text-align: center;
}
.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}
.hero .btn {
    background: var(--aselsan-dark);
    color: #fff;
    padding: 0.7rem 2rem;
    border-radius: 2rem;
    text-decoration: none;
    font-weight: 600;
    margin-top: 1.5rem;
    display: inline-block;
    transition: background 0.2s;
}
.hero .btn:hover {
    background: var(--aselsan-gray);
}

section {
    max-width: 800px;
    margin: 2rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.07);
}

section h2 {
    color: var(--aselsan-blue);
    margin-bottom: 1.2rem;
    font-size: 1.6rem;
}

.products {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 0;
    list-style: none;
}
.products li {
    flex: 1 1 250px;
    background: var(--aselsan-light);
    border: 1px solid var(--aselsan-gray);
    border-radius: 0.7rem;
    padding: 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.faq .faq-item {
    margin-bottom: 1.2rem;
}
.faq h4 {
    color: var(--aselsan-dark);
    margin-bottom: 0.3rem;
}
.faq p {
    margin-top: 0;
}

.contact-info {
    margin-bottom: 2rem;
}
.contact-info p {
    margin: 0.3rem 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}
.contact-form input,
.contact-form textarea {
    padding: 0.7rem;
    border: 1px solid var(--aselsan-gray);
    border-radius: 0.3rem;
    font-size: 1rem;
}
.contact-form button {
    background: var(--aselsan-blue);
    color: #fff;
    border: none;
    padding: 0.9rem;
    border-radius: 0.3rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}
.contact-form button:hover {
    background: var(--aselsan-dark);
}

footer {
    text-align: center;
    background: var(--aselsan-gray);
    color: #fff;
    padding: 1rem 0;
    margin-top: 2rem;
    border-top-left-radius: 1rem;
    border-top-right-radius: 1rem;
    font-size: 1rem;
}