:root {
    --primary: #1e3a8a;
    --secondary: #f97316;
    --light: #f3f4f6;
    --dark: #222;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background: var(--light);
}

/* Шапка */
header {
    position: fixed;
    width: 100%;
    top: 0;
    background: var(--primary);
    color: white;
    display: flex;
    justify-content: space-between;
    padding: 15px 10%;
    z-index: 1000;
}

header a {
    color: white;
    margin-left: 20px;
    text-decoration: none;
}

header a:hover {
    color: var(--secondary);
}

main {
    padding-top: 100px;
}

/* Top Grid*/
.top-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    padding: 40px 10%;
}

.main-banner {
    background: var(--primary);
    color: white;
    padding: 40px;
    position: relative;
}

.main-banner h1 {
    font-size: 32px;
}

.side-box {
    background: white;
    padding: 20px;
}

/*Flex Card */
.cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 20px 10%;
}

.card {
    flex: 1 1 150px;
    background: white;
    padding: 20px;
    text-align: center;
}

/* Bottom Grid */
.bottom-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    padding: 40px 10%;
}

.content {
    background: white;
    padding: 20px;
}

.sidebar {
    background: white;
    padding: 20px;
}

/* Формы */
form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

input, textarea {
    padding: 8px;
    border: 1px solid #ccc;
}

button {
    background: var(--secondary);
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
}

button:hover {
    background: var(--primary);
}

/* Подвал */
footer {
    background: var(--dark);
    color: white;
    text-align: center;
    padding: 20px;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
}

/* Адаптивность*/
@media (max-width: 900px) {
    .top-grid,
    .bottom-grid {
        grid-template-columns: 1fr;
    }

    .cards {
        flex-direction: column;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
    }
}