/* --- CSS cho các trang con --- */

/* Ẩn hero section trên các trang con */
#hero {
    display: none;
}

/* Định dạng nội dung chính */
.page-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 120px 5% 80px 5%; /* Thêm padding top để bù cho header fixed */
    background-color: var(--card-bg);
    min-height: 60vh;
}

.page-content h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: 10px;
}

.page-content h2 {
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-top: 40px;
    margin-bottom: 15px;
    text-align: left;
}

.page-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.page-content ul {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 20px;
}

.page-content ul li {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 10px;
}

/* --- CSS cho trang Contact --- */
.contact-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.contact-form label {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    font-family: 'Montserrat', sans-serif;
}

.contact-form button {
    background-color: var(--primary-color);
    color: #fff;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: var(--accent-color);
}

/* --- CSS cho Filter/Search Bar (Trang groups.html) --- */

.filter-container {
    width: 100%;
    margin: 20px 0 40px 0;
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.search-wrapper {
    position: relative;
    width: 100%;
    margin-bottom: 20px;
}

.search-wrapper i {
    position: absolute;
    top: 50%;
    left: 15px;
    transform: translateY(-50%);
    color: var(--text-color);
    opacity: 0.5;
}

#search-bar, #search-bar-en {
    width: 100%;
    padding: 15px 15px 15px 45px; /* Thêm padding trái cho icon */
    font-size: 1rem;
    font-family: 'Montserrat', sans-serif;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    border: 2px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background-color: var(--border-color);
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}