body {
    background-color: #f0f8f0;
    font-family: cursive, sans-serif;
    text-align: center;
}

header, footer {
    background-image: url('../img/img_1.png');
    padding: 10px;
    text-align: center;
}

section {
    margin: 20px auto;
    max-width: 800px;
    background-color: #ffffff;
    border-radius: 20px;
}

ul, ol {
    padding-left: 0;
    list-style-position: inside;
}

h1 { color: #2e7d32; }

section h2 { color: #388e3c; }

h2 + h3 { color: #66bb6a; }

nav {
    display: block;
    margin: 10px;
    padding: 10px;
}

nav a {
    text-decoration: none;
    color: black;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 1.2rem;
}

nav a:first-child:hover {
    color: yellow;
    background-color: #1b5e20;
}

nav a:nth-child(2):hover {
    color: orange;
    background-color: #2e7d32;
}

nav a:nth-child(3):hover {
    color: yellow;
    background-color: #388e3c;
}

nav a:nth-child(4):hover {
    color: orange;
    background-color: #1b5e20;
}

a {
    text-decoration: none;
    color: black;
    border-radius: 15px;
}

a:hover {
    background-color: #a9ebba;
}

section a {
    color: #95b7cf;
    font-style: italic;
}

header img {
    width: 50%;
    height: auto;
    border-radius: 1000px;
}
#definition {
    color: blue;
    font-style: italic

}
#citation {
    color: red;
    font-style: italic
}
#postit {
    display: flex;
    flex-wrap: wrap;
    list-style-type: none;
    justify-content: space-around;
    padding: 0;
    margin: 0;
}

.postit-item {
    background-color: #fff9c4;
    border: 2px solid #f9a825;
    position: relative;
    padding: 15px;
    margin: 10px;
    min-width: 150px;
    cursor: pointer;
}

.postit-item ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    z-index: 10;
    background-color: #ffffff;
    border: 1px solid #ccc;
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.postit-item:hover ul {
    display: block;
}

.postit-item ul li {
    color: #2e7d32;
    padding: 8px 12px;
}

.postit-item ul li:hover {
    background-color: #f0f8f0;
}

.postit-item:nth-child(1) { background-color: #fff9c4; border-color: #f9a825; }
.postit-item:nth-child(2) { background-color: #c8e6c9; border-color: #388e3c; }
.postit-item:nth-child(3) { background-color: #bbdefb; border-color: #1565c0; }
.postit-item:nth-child(4) { background-color: #f8bbd0; border-color: #c62828; }
.postit-item:nth-child(5) { background-color: #e1bee7; border-color: #6a1b9a; }



table {
    width: 90%;
    margin: 20px auto;
    border-collapse: collapse;
}

caption {
    color: #2e7d32;
    font-weight: bold;
    margin-bottom: 25px;
    margin-top:25px
}

table, td, th {
    border: 1px solid #388e3c;
}

thead, tfoot {
    background-color: #2e7d32;
    color: #ffffff;
}

thead th {
    padding: 10px;
}

tbody tr {
    background-color: #f0f8f0;
}

tbody tr:nth-child(even) {
    background-color: #c8e6c9;
}

td {
    padding: 10px;
}

form, .box {
    width: 80%;
    margin: 30px auto;
    background-color: #ffffff;
    padding: 20px;
    border-radius: 15px;
}

fieldset {
    border: 2px solid #388e3c;
    border-radius: 10px;
    margin-bottom: 20px;
    padding: 15px;
}

legend {
    color: #2e7d32;
    font-weight: bold;
    font-size: 1.1rem;
    padding: 0 10px;
}

form p {
    margin: 10px 0;
    text-align: left;
}

label {
    color: #2e7d32;
    margin-right: 10px;
}

input[type="text"],
input[type="email"],
input[type="date"],
select {
    padding: 6px 10px;
    border: 1px solid #388e3c;
    border-radius: 8px;
    background-color: #f0f8f0;
    color: #333;
    width: 250px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="date"]:focus,
select:focus {
    outline: none;
    border-color: #1b5e20;
    background-color: #e8f5e9;
}

input[type="radio"],
input[type="checkbox"] {
    margin-right: 8px;
    accent-color: #2e7d32;
}

button {
    display: block;
    margin: 20px auto;
    padding: 10px 30px;
    background-color: #2e7d32;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
}
textarea {
    border: 1px solid #388e3c;
    border-radius: 8px;
    background-color: #f0f8f0;
    padding: 8px;
    font-family: cursive, sans-serif;
    width: 95%;
}

.quiz {
    display: none;
}

input[type="button"] {
    display: block;
    margin: 20px auto;
    padding: 10px 30px;
    background-color: #2e7d32;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
}

/* --- CHATBOT STYLES --- */
.chatbot-section {
    background-color: #ffffff;
    border: 2px solid #388e3c;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 30px;
    max-width: 600px;
}

#chat-box {
    height: 300px;
    border: 1px solid #c8e6c9;
    border-radius: 10px;
    padding: 15px;
    overflow-y: auto;
    background-color: #f0f8f0;
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-input-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

#user-input {
    flex-grow: 1;
    width: auto;
    margin: 0;
}

.send-btn {
    margin: 0;
    padding: 10px 20px;
}

.message {
    padding: 10px 15px;
    border-radius: 15px;
    max-width: 75%;
    display: inline-block;
    word-wrap: break-word;
    text-align: left;
}

.message.user {
    background-color: #c8e6c9;
    color: #1b5e20;
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.message.bot {
    background-color: #ffffff;
    color: #2e7d32;
    border: 1px solid #a9ebba;
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}

.message-meta {
    display: block;
    font-size: 0.75rem;
    margin-top: 5px;
    opacity: 0.7;
    text-align: right;
}

.history-separator {
    text-align: center;
    color: #66bb6a;
    font-size: 0.85rem;
    margin: 10px 0;
    font-style: italic;
    border-bottom: 1px dashed #66bb6a;
    line-height: 0.1em;
}

.history-separator::after {
    background: #f0f8f0;
    padding: 0 10px;
}