* {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0 0 50 0;
    background-color: #f6ecec;
}

header {
    background: linear-gradient(to right, #f8bbd0, #f06292, #ba68c8);
    color: white;
    padding: 10px 0;
    text-align: center;
    margin-top: 50px;
}

header h1 {
    margin: 30px 0 10px 0;
    font-size: 48px;
}

nav {
    background-color: black;
    overflow: hidden;
    height: 50px;
    display: flex;
    position: fixed; /* Cố định thẻ nav */
    width: 100%;
    top: 0;
}

.logo {
    height: 100%;
    width: auto;
    padding-right: 15px ;
    margin: 0 20px 0 15px;
    display: flex; /* nếu bỏ display - ảnh logo bị to */
    border-right: 1px solid #f6ecec;
}

.logo a {
    display: flex;
    padding: 0px;
}

.nav_p {
    display: block;
    color: white;
    text-align: center;
    margin: auto 10px;
    font-weight: bold;
    text-decoration: none; /* xóa gạch chân */
}

.logo-img {
    margin: auto 5px;
    height: 90%;
    border-radius: 10px;
}

nav a {
    color: white;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
    transition: all 0.5s ease;
}

.nav-box {
    margin: 5px;
    width: 120px;
    padding-top: 10px;
    padding-bottom: 10px;
    border-radius: 8px;
}

.nav-box-click {
    color: black;
    background-color: #ddd;
    transition: all 0.5s ease;
}

.nav-box-cursor-pointer:hover {
    background-color: rgb(100, 100, 100);
}

section {
    margin-bottom: 50px;
}

footer {
    background-color: black;
    color: white;
    text-align: center;
    padding: 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}

/* TRANG CHỦ */
.index-content {
    text-align: center;
    color: pink;
    margin-top: 50px;
    padding: 1px;
    background-image: url(./images/background.jpg);
    background-size: cover;
    background-position-y: -130px;
    height: 100vh;
}

section h1 {
    text-align: center;
    font-size: 32px;
}

#title {
    display: block;
    width: 50%;
    margin: 10px auto;
    text-align: center;
    font-size: 60px;
    background: linear-gradient(to right, #f8bbd0, #f06292, #ba68c8);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

#slogan {
    display: block;
    width: 50%;
    margin: 0 auto;
    text-align: center;
    font-size: 24px;
    background: linear-gradient(to right, #f8bbd0, #f06292, #ba68c8);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* HOẠT ĐỘNG */
.hoatdong-section {
    display: flex;
    flex-wrap: wrap;
}

.activity-list {
    flex: 3;
    min-width: 150px;
    margin: 15px 5px 0 5px;
    background-color: #f8c5f8;
    border-radius: 5px;
}

.activity-list h2 {
    text-align: center;
}

.activity-list a {
    font-size: 18px;
    display: block;
    width: 100%;
    padding: 10px 10px 0px 10px;
    color: black;
    text-decoration: none;
    border-bottom: 1px solid black;
    transition: all 0.2s linear;
}

.activity-list a:hover {
    background-color: #ffb0ce;
    border-bottom: 1px solid #ff0055;
    box-shadow: 0 5px 9px rgba(0, 0, 0, 0.2);
}

.hoatdong-container {
    flex: 16;
    min-width: 600px;
    max-width: 1200px;
    margin: 15px 2.5%;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.hoatdong-container h2 {
    text-align: center;
    font-size: 32px;
    margin: 10px 0;
}

.text-modau {
    text-align: center;
    font-size: 20px;
    margin: 10px 0;
}

.hoatdong {
    background-color: #f6ecec;
    display: flex;
    width: 100%;
    margin: 30px 0;
    flex-wrap: wrap-reverse;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 5px 5px 12px rgba(0, 0, 0, 0.2);
    transition: all 0.15s linear;
}

.hoatdong:hover {
    background-color: #eedbdb;
}

.hoatdong:nth-child(even) {
    flex-direction: row-reverse;
}

.hoatdong-content {
    flex: 3;
    padding: 10px 30px;
    min-width: 450px;
}

.hoatdong-content h3 {
    text-align: center;
    font-size: 24px;
    margin: 15px 0 5px 0;
}

.day {
    width: 100%;
    display: flex;
}

.day1 {
    font-size: 18px;
    margin: 10px 0;
    font-weight: bold;
}

.day2 {
    font-size: 18px;
    margin: 10px 0 5px 5px;
}

.p-text {
    font-size: 18px;
    margin: 10px 0;
    text-align: justify;
    text-indent: 20px;
}

.hoatdong-button {
    display: block;
    text-align: center;
    font-size: 18px;
    background-color: #feb4cd;
    border: none;
    padding: 5px 10px;
    margin-top: 5px;
    border-radius: 4px;
    text-decoration: none;
    color: black;
    transition: all 0.15s linear;
}

.hoatdong-button:hover {
    background-color: #f48fb1;
    scale: 1.01;
    box-shadow: 0px 5px 9px rgba(0, 0, 0, 0.1);
}

.hoatdong-image {
    flex: 2;
    min-width: 300px;
    min-height: 200px;
    overflow: hidden;
}

.hoatdong-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    overflow: hidden;
}

/* ẢNH TỪNG HOẠT ĐỘNG */
/* .hoatdong-images {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    width: 100%;
}

.hoatdong-item {
    width: calc(50% - 20px);
    margin-bottom: 40px;
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(153, 2, 14, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hoatdong-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(153, 2, 14, 0.3);
}

.hoatdong-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.hoatdong-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.hoatdong-item:hover .hoatdong-image img {
    transform: scale(1.05);
}

.hoatdong-text {
    padding: 20px;
} */

/* THÀNH VIÊN */
.table-member {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    font-size: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s linear;
}

.table-member:hover {
    transform: scale(1.01);
    box-shadow: 5px 5px 9px rgba(0, 0, 0, 0.2);
}

.table-heading {
    background-color: #f48fb1;
    color: white;
}

.table-heading th {
    padding: 10px;
}

.table-member tbody tr {
    background-color: #eedbf1;
    transition: all 0.15s linear;
}

.table-member tbody tr:nth-child(even) {
    background-color: #fadbe5;
}

.table-center {
    text-align: center;
}

.table-member td {
    padding: 10px;
}

.table-member tbody tr:hover {
    background-color:#fbd2e0;
}

.table_button {
    font-size: 20px;
    background-color: #feb4cd;
    border: none;
    padding: 5px 10px;
    border-radius: 8px;
    text-decoration: none;
    color: black;
}

.table_button:hover {
    transition: background-color 0.3s ease;
    background-color: #f48fb1;
}

/* LIÊN HỆ */
.admin {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
}

.admin-member {
    width: 45%;
    min-width: 500px;
    padding: 20px;
    margin: 10px;
    border-radius: 10px;
    background-color: #ffdfea;
    display: flex;
    box-shadow: 0px 5px 9px rgba(0, 0, 0, 0.1);
}

.admin_image {
    height: 150px;
    border-radius: 5px;
}

.admin_bio {
    flex: 1;
    padding: 10px;
}

.admin_bio_element {
    display: flex;
    height: 30px;
    align-items: center;
}

.admin_bio_text {
    font-weight: bold;
    margin: 5px;
    text-align: center;
    font-size: 24px;
}

.admin_bio_text1 {
    font-weight: bold;
    font-size: 18px;
}

.admin_bio_text2 {
    margin-left: 5px;
    font-size: 18px;
}

.admin_bio_button {
    display: block;
    justify-self: end;
    font-size: 20px;
    background-color: #feb4cd;
    border: none;
    padding: 5px 10px;
    margin-top: 5px;
    border-radius: 8px;
    text-decoration: none;
    color: black;
    transition: all 0.15s linear;
}

.admin_bio_button:hover {
    background-color: #f48fb1;
    scale: 1.01;
    box-shadow: 0px 5px 9px rgba(0, 0, 0, 0.1);
}

.contact {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
}

.contact_box {
    flex: 1;
    padding: 20px;
    margin: 20px;
    min-width: 440px;
    max-width: 650px;
    border-radius: 10px;
    background-color: #fbd5e2;
    box-shadow: 5px 5px 9px rgba(0, 0, 0, 0.1);
}

.contact_box h1 {
    padding-bottom: 20px;
    border-bottom: 2px solid #f06292;
}

.contact_group {
    display: flex;
    margin: 20px;
}

.contact_group img {
    width: 50px;
}

.contact_group div {
    margin-left: 15px;
}

.contact-text1 {
    margin: 5px 0;
    font-size: 20px;
    font-weight: bold;
}

.contact-text2 {
    margin: 0;
    font-size: 16px;
}

.form-input {
    display: flex;
    height: 23px;
    margin: 20px;
    font-size: 20px;
}

.form-input label {
    font-weight: bold;
}

.form-input input {
    flex: 1;
    font-size: 20px;
    padding: 0 3px;
    margin-left: 5px;
    border: none;
    background-color: transparent;
    border-bottom: 1px solid black;
    transition: all 0.3s linear;
}

.form-input input:focus {
    outline: none;
    border: none;
    border-bottom: 1px solid #f65389;
}

.form-message {
    margin: 20px;
    font-size: 20px;
}

.form-message label {
    font-weight: bold;
}

.form-message textarea {
    width: 100%;
    font-size: 18px;
    margin-top: 12px;
    transition: all 0.15s linear;
}

.form-message textarea:focus {
    outline-color: #f65389;
}

.form-button {
    display: flex;
    font-size: 20px;
    margin: 20px;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    margin-left: auto;
    background-color: #feb4cd;
    transition: all 0.15s linear;
}

.form-button:hover {
    background-color: #f48fb1;
    scale: 1.01;
    box-shadow: 0px 5px 9px rgba(0, 0, 0, 0.1);
}

.member-section {
    width: 95%;
    max-width: 1000px;
    margin: 0 auto 50px auto;
}

.back-button {
    display: block;
    width: 150px;
    text-align: center;
    padding: 5px 10px;
    margin: 20px 0;
    border-radius: 5px;
    background-color: #feb4cd;
    text-decoration: none;
    color: black;
    font-size: 18px;
    transition: all 0.15s linear;
    box-shadow: 2px 3px 9px rgba(0, 0, 0, 0.1);
}

.back-button:hover {
    background-color: #f48fb1;
    scale: 1.01;
    box-shadow: 0px 5px 9px rgba(0, 0, 0, 0.1);
}

.student-container {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 5px 5px 9px rgba(0, 0, 0, 0.1);
}

.student-box-bio {
    display: flex;
}

.student-image img {
    width: 200px;
    border-radius: 8px;
    margin-right: 20px;
}

.student-bio {
    flex: 1;
    margin-left: 20px;
}

.student-bio h1 {
    margin: 0 0 10px 0;
}

.student-item {
    display: flex;
}

.student-item-text1 {
    margin: 7px 0px;
    font-size: 20px;
    font-weight: bold;
}

.student-item-text2 {
    margin: 7px 0px;
    font-size: 20px;
    margin-left: 5px;
}