@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: #f5f7fa;
    color: #222;

}

header {
    padding: 20px;
    background-color: white;

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

nav menu {
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
  }

nav li {
    list-style: none;
}

nav a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
}

nav a:hover {
    color: #0d6efd;
}

#tagline {
    max-width: 700px;
    margin: 0 auto 30px;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
}

h1 {
    margin: 0;
    font-weight: 700;
}

main {
    padding: 40px;
    text-align: center;
}

.login-logo {
    width: 280px;
    max-width: 200%;
    margin-bottom: 10px;
}

.login-form {
    max-width: 400px;
    margin: 30px auto;
    padding: 25px;

    background-color: white;
    border-radius: 10px;
}

.login-form div {
    margin-bottom: 15px;
}

.login-form input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.login-form label {
    display: block;
    text-align: left;
    margin-bottom: 5px;
}

table {
    width: 100%;
    max-width: 900px;
    margin: 25px auto;
    border-collapse: collapse;
    background-color: white;
}

section {
    overflow-x: auto;
}

th,
td {
    padding: 15px;
    border-bottom: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #f0f2f5;
}

select {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin: 15px 0;
}

section {
    max-width: 900px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
}

.session-form {
    max-width: 600px;
    margin: 20px auto;
}

.session-form div {
    margin-bottom: 15px;
}

.session-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.session-form input,
.session-form select {
    width: 100%;
    padding: 10px;
}

.messages {
    max-width: 700px;
    margin: 20px auto;
}

.messages p {
    background-color: #e9ecef;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 10px;
    text-align: left;
}

.messages .my-message {
    background-color: #dbeafe;
}

.chat-form {
    max-width: 700px;
    margin: 20px auto;

    display: flex;
    gap: 10px;
    align-items: center;
}

.chat-form input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

footer {
    padding: 20px;
}

@media (max-width: 600px) {
    header {
        flex-direction: column;
        gap: 15px;
    }

    nav menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    main {
        padding: 20px;
    }

    #tagline {
        font-size: 1.5rem;
    }

    .login-form {
        width: 100%;
    }

  .chat-form {
    flex-direction: column;
    align-items: stretch;
  }
}