/* =========================
   RESET CƠ BẢN
========================= */
* {
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    background-color: #f4f6f9;
    color: #212529;
    font-size: 16px;
}

a {
    text-decoration: none;
}

p {
    line-height: 1.7;
}

/* =========================
   MENU
========================= */
.menu {
    background-color: #111827;
    padding: 0 5%;
    display: flex;
    align-items: center;
    min-height: 55px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

    .menu a {
        color: white;
        padding: 18px 20px;
        font-weight: bold;
        transition: 0.3s;
    }

        .menu a:hover {
            background-color: #0d6efd;
            color: white;
        }

/* =========================
   KHUNG NỘI DUNG CHÍNH
========================= */
.content {
    width: 92%;
    margin: 30px auto;
    background-color: #ffffff;
    padding: 30px;
    min-height: 500px;
    border-radius: 12px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
}

/* =========================
   FOOTER
========================= */
.footer {
    background-color: #111827;
    color: white;
    text-align: center;
    padding: 18px;
    margin-top: 40px;
}

/* =========================
   BUTTON
========================= */
.btn {
    padding: 9px 15px;
    margin: 4px;
    border: none;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    cursor: pointer;
    display: inline-block;
    font-weight: bold;
    transition: 0.3s;
}

    .btn:hover {
        opacity: 0.85;
        transform: translateY(-1px);
    }

.btn-add {
    background-color: #198754;
}

.btn-edit {
    background-color: #ffc107;
    color: black;
}

.btn-delete {
    background-color: #dc3545;
}

.btn-save {
    background-color: #0d6efd;
}

.btn-view {
    background-color: #6f42c1;
}

.btn-reset {
    background-color: #6c757d;
}

/* =========================
   FORM
========================= */
.textbox {
    width: 100%;
    padding: 11px;
    margin: 7px 0 16px 0;
    border: 1px solid #ced4da;
    border-radius: 6px;
    outline: none;
    font-size: 15px;
}

    .textbox:focus {
        border-color: #0d6efd;
        box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
    }

label {
    font-weight: bold;
    color: #343a40;
}

/* =========================
   BOX DÙNG CHUNG
========================= */
.box,
.home-section,
.about-section {
    background-color: #ffffff;
    padding: 25px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
    margin-bottom: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

    .box h3,
    .home-section h2,
    .about-section h2 {
        color: #0d6efd;
        margin-top: 0;
        margin-bottom: 15px;
    }

.box-detail {
    background-color: #f8f9fa;
    padding: 25px;
    border-left: 6px solid #0d6efd;
    border-radius: 8px;
    margin-top: 25px;
}

/* =========================
   TABLE / GRIDVIEW
========================= */
table {
    width: 100%;
}

.grid {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
}

    .grid th {
        background-color: #0d6efd;
        color: white;
        text-align: center;
        padding: 12px;
    }

    .grid td {
        padding: 11px;
        border: 1px solid #dee2e6;
    }

    .grid tr:nth-child(even) {
        background-color: #f8f9fa;
    }

    .grid tr:hover {
        background-color: #eef5ff;
    }

/* =========================
   TRANG CHỦ
========================= */
.home-banner {
    background: linear-gradient(135deg, #0d6efd, #084298);
    color: white;
    padding: 55px 30px;
    border-radius: 14px;
    text-align: center;
    margin-bottom: 30px;
}

    .home-banner h1 {
        font-size: 34px;
        margin-bottom: 15px;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .home-banner p {
        font-size: 18px;
        margin-bottom: 25px;
    }

.home-grid {
    display: flex;
    gap: 22px;
    margin-bottom: 25px;
}

.home-card {
    flex: 1;
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border-left: 6px solid #0d6efd;
    box-shadow: 0 3px 12px rgba(0,0,0,0.07);
    transition: 0.3s;
}

    .home-card:hover {
        transform: translateY(-4px);
    }

    .home-card h3 {
        color: #0d6efd;
        margin-top: 0;
        margin-bottom: 10px;
    }

.feature-list {
    line-height: 2;
    font-size: 16px;
}

    .feature-list li {
        margin-bottom: 5px;
    }

/* =========================
   TIN TỨC MỚI NHẤT
========================= */
.news-item {
    background-color: #f8f9fa;
    padding: 20px;
    border-left: 6px solid #0d6efd;
    border-radius: 8px;
    margin-bottom: 16px;
    transition: 0.3s;
}

    .news-item:hover {
        background-color: #eef5ff;
        transform: translateX(3px);
    }

    .news-item h3 {
        margin-top: 0;
        color: #0d6efd;
    }

    .news-item p {
        line-height: 1.7;
    }

/* =========================
   TRANG GIỚI THIỆU
========================= */
.about-banner {
    background: linear-gradient(135deg, #0d6efd, #084298);
    color: white;
    padding: 50px 30px;
    border-radius: 14px;
    text-align: center;
    margin-bottom: 30px;
}

    .about-banner h1 {
        margin: 0 0 12px 0;
        font-size: 34px;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .about-banner p {
        font-size: 18px;
        margin: 0;
    }

.about-grid {
    display: flex;
    gap: 22px;
    margin-bottom: 25px;
}

.about-card {
    flex: 1;
    background-color: #f8f9fa;
    padding: 24px;
    border-radius: 10px;
    border-left: 6px solid #0d6efd;
    box-shadow: 0 3px 12px rgba(0,0,0,0.07);
    transition: 0.3s;
}

    .about-card:hover {
        transform: translateY(-4px);
    }

    .about-card h3 {
        color: #0d6efd;
        margin-top: 0;
    }

    .about-card p {
        line-height: 1.7;
    }

.about-list {
    line-height: 2;
    font-size: 16px;
}

    .about-list li {
        margin-bottom: 5px;
    }

/* =========================
   RESPONSIVE
========================= */
@media screen and (max-width: 768px) {
    .menu {
        flex-direction: column;
        align-items: stretch;
        padding: 0;
    }

        .menu a {
            display: block;
            padding: 14px;
            border-bottom: 1px solid #333;
        }

    .content {
        width: 95%;
        padding: 18px;
        margin: 18px auto;
    }

    .home-grid,
    .about-grid {
        flex-direction: column;
    }

    .home-banner h1,
    .about-banner h1 {
        font-size: 24px;
    }

    .home-banner,
    .about-banner {
        padding: 35px 20px;
    }

    .grid {
        font-size: 14px;
    }

    .btn {
        padding: 8px 11px;
        font-size: 14px;
    }
}
.news-img {
    width: 150px;
    height: 100px;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid #ddd;
    background-color: #f1f1f1;
}
.detail-img {
    width: 420px;
    max-width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 18px;
    border: 1px solid #ddd;
}
.news-home-vertical {
    display: block;
    padding: 20px;
}

.news-home-img-top {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid #ddd;
    margin-bottom: 18px;
    display: block;
}

.news-home-content {
    width: 100%;
}

    .news-home-content h3 {
        margin-top: 0;
        margin-bottom: 12px;
        color: #0d6efd;
        font-size: 22px;
    }

.news-meta {
    margin-bottom: 12px;
    line-height: 1.7;
}