body {
    font-family: Tahoma, Arial, sans-serif;
    background-color: #f7f5f2;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background-color: #5b3a29;
    color: white;
    padding: 15px 30px;
    position: relative;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hamburger-btn {
    font-size: 26px;
    cursor: pointer;
    user-select: none;
}

.menu-toggle {
    display: none;
}

header h1 a {
    color: white;
    text-decoration: none;
}

nav {
    margin-top: 10px;
}

nav a {
    color: white;
    margin-left: 15px;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

nav span {
    margin-left: 15px;
}

main {
    padding: 20px 30px;
}

.search-bar-wrap {
    display: flex;
    justify-content: center;
    padding: 20px 30px 0;
}

.search-bar {
    display: flex;
    align-items: center;
    background-color: #eceaf5;
    border-radius: 30px;
    overflow: hidden;
    width: 100%;
    max-width: 500px;
}

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 14px 18px;
    font-family: inherit;
    font-size: 15px;
    outline: none;
    text-align: right;
}

.search-bar button {
    background-color: #f5943a;
    border: none;
    width: 46px;
    height: 46px;
    margin: 4px;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
}

.book-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.book-card {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    width: 220px;
}

.book-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 5px;
}

.book-card a {
    display: block;
    margin-top: 8px;
}

.book-card a:not(.btn) {
    color: #5b3a29;
    text-decoration: none;
}

.book-card a:not(.btn):hover {
    text-decoration: underline;
}

.book-detail {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    max-width: 500px;
}

.book-detail img {
    width: 200px;
    border-radius: 5px;
    margin-bottom: 15px;
}

.btn {
    display: inline-block;
    background-color: #5b3a29;
    color: white;
    padding: 8px 15px;
    border-radius: 5px;
    text-decoration: none;
    margin-left: 10px;
}

table {
    border-collapse: collapse;
    width: 100%;
    max-width: 700px;
    background-color: white;
}

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

th, td {
    padding: 10px;
    text-align: right;
}

td a {
    color: #5b3a29;
    text-decoration: none;
}

td a:hover {
    text-decoration: underline;
}

form {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    max-width: 350px;
    display: flex;
    flex-direction: column;
}

form label {
    margin-top: 10px;
}

form input {
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

form button {
    margin-top: 15px;
    padding: 10px;
    background-color: #5b3a29;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.error {
    color: red;
}

footer {
    text-align: center;
    padding: 15px;
    color: #777;
}

.flash-message {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 15px;
    animation: fadeOut 0.5s ease-in-out 3s forwards;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* ---------- منوی کشویی دسته‌بندی ---------- */
.side-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 260px;
    height: 100%;
    background-color: white;
    color: #333;
    padding: 20px;
    box-shadow: -3px 0 10px rgba(0, 0, 0, 0.3);
    transition: right 0.3s ease;
    z-index: 1000;
}

.menu-toggle:checked ~ .side-menu {
    right: 0;
}

.side-menu h3 {
    color: #5b3a29;
    margin-bottom: 15px;
}

.side-menu a {
    display: block;
    padding: 10px 0;
    color: #5b3a29;
    text-decoration: none;
    border-bottom: 1px solid #eee;
}

.side-menu a:hover {
    text-decoration: underline;
}

.close-btn {
    display: block;
    text-align: left;
    font-size: 26px;
    cursor: pointer;
    margin-bottom: 10px;
}

.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 999;
}

.menu-toggle:checked ~ .menu-overlay {
    display: block;
}

.order-card {
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    max-width: 500px;
}