:root {
    --primary-color: #00b8ff;
    --secondary-color: #f0f8ff;
    --text-color: #333;
    --border-color: #e0e0e0;
}

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

body {
    font-family: Arial, sans-serif;
    background-color: var(--secondary-color);
    color: var(--text-color);
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 400px;
}

h1 {
    font-size: 2rem;
    text-align: center;
    color: white;
    margin-bottom: 20px;
}

.search-form {
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.input-group {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 15px;
    padding-bottom: 5px;
}

.input-group:last-of-type {
    border-bottom: none;
    margin-bottom: 20px;
}

.input-group i {
    color: #999;
    margin-right: 10px;
}

.input-group input {
    border: none;
    outline: none;
    font-size: 1rem;
    width: 100%;
}

.search-button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-button:hover {
    background-color: #0099cc;
}

nav {
    display: flex;
    justify-content: space-around;
    background-color: white;
    padding: 10px 0;
    border-top: 1px solid var(--border-color);
}

.nav-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    color: #999;
    font-size: 0.75rem;
}

.nav-button.active {
    color: var(--primary-color);
}

.nav-button i {
    margin-bottom: 5px;
}

.nav-button .notification {
    background-color: red;
    color: white;
    font-size: 0.7rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: -5px;
    right: -5px;
}

.avatar {
    width: 24px;
    height: 24px;
    background-color: #ddd;
    border-radius: 50%;
    margin-bottom: 5px;
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .search-form {
        padding: 15px;
    }

    .nav-button span {
        font-size: 0.7rem;
    }
}