/* GENERAL */

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&display=swap");
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Poppins", sans-serif;
    animation: fadeIn 1s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@media screen and (max-width: 768px) {
    html {
        font-size: 14px;
    }
}

@media screen and (max-width: 480px) {
    html {
        font-size: 12px;
    }
}

p {
    color: rgb(85, 85, 85);
}


/* TRANSITION */

a,
.btn {
    transition: all 300ms ease;
}


/* DESKTOP NAV */

nav,
.nav-links {
    display: flex;
}

nav {
    justify-content: space-around;
    align-items: center;
    height: 17vh;
    animation: slideDown 0.5s ease;
}

@media screen and (max-width: 768px) {
    nav {
        height: 12vh;
        padding: 0 1rem;
    }
    .nav-links {
        display: none;
    }
    #hamburger-nav {
        display: flex;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

.nav-links {
    gap: 2rem;
    list-style: none;
    font-size: 1.5rem;
}

a {
    color: black;
    text-decoration: none;
    text-decoration-color: white;
    position: relative;
}

a:hover {
    color: grey;
    text-decoration: underline;
    text-underline-offset: 1rem;
    text-decoration-color: rgb(181, 181, 181);
    transform: translateY(-2px);
}

.logo {
    font-size: 2rem;
}

.logo:hover {
    cursor: default;
}


/* HAMBURGER MENU */

#hamburger-nav {
    display: none;
}

@media screen and (max-width: 768px) {
    #hamburger-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        padding: 1rem;
    }
}

.hamburger-menu {
    position: relative;
    display: inline-block;
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 24px;
    width: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hamburger-icon span {
    width: 100%;
    height: 2px;
    background-color: black;
    transition: all 0.3s ease-in-out;
}

.menu-links {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    width: fit-content;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.menu-links a {
    display: block;
    padding: 10px;
    text-align: center;
    font-size: 1.5rem;
    color: black;
    text-decoration: none;
    transition: all 0.3s ease-in-out;
}

.menu-links li {
    list-style: none;
    transform: translateX(-100%);
    animation: slideIn 0.3s forwards;
}

@keyframes slideIn {
    to {
        transform: translateX(0);
    }
}

.menu-links.open {
    max-height: 300px;
}

.hamburger-icon.open span:first-child {
    transform: rotate(45deg) translate(10px, 5px);
}

.hamburger-icon.open span:nth-child(2) {
    opacity: 0;
}

.hamburger-icon.open span:last-child {
    transform: rotate(-45deg) translate(10px, -5px);
}

.hamburger-icon span:first-child {
    transform: none;
}

.hamburger-icon span:first-child {
    opacity: 1;
}

.hamburger-icon span:first-child {
    transform: none;
}


/* SECTIONS */

section {
    padding-top: 4vh;
    height: 96vh;
    margin: 0 10rem;
    box-sizing: border-box;
    min-height: fit-content;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

@media screen and (max-width: 1024px) {
    section {
        margin: 0 5rem;
    }
}

@media screen and (max-width: 768px) {
    section {
        margin: 0 2rem;
        height: auto;
        padding: 4vh 0;
    }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-container {
    display: flex;
}

@media screen and (max-width: 768px) {
    .section-container {
        flex-direction: column;
        gap: 2rem;
    }
}


/* PROFILE SECTION */

#profile {
    display: flex;
    justify-content: center;
    gap: 5rem;
    height: 80vh;
}

@media screen and (max-width: 768px) {
    #profile {
        flex-direction: column;
        height: auto;
        gap: 2rem;
        text-align: center;
    }
}

.section__pic-container {
    display: flex;
    height: 400px;
    width: 400px;
    margin: auto 0;
}

@media screen and (max-width: 768px) {
    .section__pic-container {
        height: 300px;
        width: 300px;
        margin: 0 auto;
    }
}

@media screen and (max-width: 480px) {
    .section__pic-container {
        height: 200px;
        width: 200px;
    }
}

.section__text {
    align-self: center;
    text-align: center;
}

.section__text p {
    font-weight: 600;
}

.section__text__p1 {
    text-align: center;
    animation: slideInLeft 0.8s ease;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.section__text__p2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    animation: slideInRight 0.8s ease;
}

@media screen and (max-width: 768px) {
    .section__text__p2 {
        font-size: 1.5rem;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.title {
    font-size: 3rem;
    text-align: center;
    animation: scaleIn 0.8s ease;
}

@media screen and (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

#socials-container {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
    gap: 1rem;
}


/* ICONS */

.icon {
    cursor: pointer;
    height: 2rem;
    transition: transform 0.3s ease;
}

.icon:hover {
    transform: scale(1.2) rotate(5deg);
}


/* BUTTONS */

.btn-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

@media screen and (max-width: 480px) {
    .btn-container {
        flex-direction: column;
        align-items: center;
    }
}

.btn {
    font-weight: 600;
    transition: all 300ms ease;
    padding: 1rem;
    width: 8rem;
    border-radius: 2rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 200%;
    height: 200%;
}

.btn-color-1,
.btn-color-2 {
    border: rgb(53, 53, 53) 0.1rem solid;
}

.btn-color-1:hover,
.btn-color-2:hover {
    cursor: pointer;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-color-1,
.btn-color-2:hover {
    background: rgb(53, 53, 53);
    color: white;
}

.btn-color-1:hover {
    background: rgb(0, 0, 0);
}

.btn-color-2 {
    background: none;
}

.btn-color-2:hover {
    border: rgb(255, 255, 255) 0.1rem solid;
}

.btn-container {
    gap: 1rem;
}


/* ABOUT SECTION */

#about {
    position: relative;
}

.about-containers {
    gap: 2rem;
    margin-bottom: 2rem;
    margin-top: 2rem;
}

@media screen and (max-width: 768px) {
    .about-containers {
        flex-direction: column;
    }
}

.about-details-container {
    justify-content: center;
    flex-direction: column;
}

.about-containers,
.about-details-container {
    display: flex;
}

.about-pic {
    border-radius: 2rem;
    transition: transform 0.5s ease;
}

.about-pic:hover {
    transform: scale(1.05);
}

.arrow {
    position: absolute;
    right: -5rem;
    bottom: 2.5rem;
}

@media screen and (max-width: 768px) {
    .arrow {
        display: none;
    }
}

.details-container {
    padding: 1.5rem;
    flex: 1;
    background: white;
    border-radius: 2rem;
    border: rgb(53, 53, 53) 0.1rem solid;
    border-color: rgb(163, 163, 163);
    text-align: center;
    transition: all 0.3s ease;
}

.details-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.section-container {
    gap: 4rem;
    height: 80%;
}

.section__pic-container {
    height: 400px;
    width: 400px;
    margin: auto 0;
}


/* EXPERIENCE SECTION */

#experience {
    position: relative;
}

.experience-sub-title {
    color: rgb(85, 85, 85);
    font-weight: 600;
    font-size: 1.75rem;
    margin-bottom: 2rem;
}

@media screen and (max-width: 768px) {
    .experience-sub-title {
        font-size: 1.5rem;
    }
}

.experience-details-container {
    display: flex;
    justify-content: center;
    flex-direction: column;
}

.article-container {
    display: flex;
    text-align: initial;
    flex-wrap: wrap;
    flex-direction: row;
    gap: 2.5rem;
    justify-content: space-around;
}

@media screen and (max-width: 768px) {
    .article-container {
        gap: 1rem;
    }
}

article {
    display: flex;
    width: 10rem;
    justify-content: space-around;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

article:hover {
    transform: translateY(-5px);
}

article .icon {
    cursor: default;
}


/* PROJECTS SECTION */

#projects {
    position: relative;
}

.color-container {
    border-color: rgb(163, 163, 163);
    background: rgb(250, 250, 250);
    transition: all 0.3s ease;
}

.color-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.project-img {
    border-radius: 2rem;
    width: 90%;
    height: 90%;
    transition: transform 0.5s ease;
}

.project-img:hover {
    transform: scale(1.05);
}

.project-title {
    margin: 1rem;
    color: black;
}

.project-btn {
    color: black;
    border-color: rgb(163, 163, 163);
}


/* GALLERY SECTION */

#gallery {
    position: relative;
    height: auto;
    padding-bottom: 4rem;
}

.gallery-container {
    margin-top: 2rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 0 2rem;
}

@media screen and (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        padding: 0 1rem;
    }
}

@media screen and (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 2rem;
    border: rgb(163, 163, 163) 0.1rem solid;
    transition: all 0.3s ease;
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}


/* Modal styles for gallery images */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    overflow: auto;
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 900px;
    position: relative;
    top: 50%;
    transform: translateY(-50%);
    animation: zoomIn 0.3s ease;
}

@media screen and (max-width: 768px) {
    .modal-content {
        width: 95%;
    }
}

@keyframes zoomIn {
    from {
        transform: translateY(-50%) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(-50%) scale(1);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.modal-close:hover {
    color: #bbb;
    text-decoration: none;
}

.modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}


/* CONTACT */

#contact {
    display: flex;
    justify-content: center;
    flex-direction: column;
    height: 70vh;
}

@media screen and (max-width: 768px) {
    #contact {
        height: auto;
        padding: 4vh 0;
    }
}

.contact-info-upper-container {
    display: flex;
    justify-content: center;
    border-radius: 2rem;
    border: rgb(53, 53, 53) 0.1rem solid;
    border-color: rgb(163, 163, 163);
    background: (250, 250, 250);
    margin: 2rem auto;
    padding: 0.5rem;
    transition: all 0.3s ease;
}

@media screen and (max-width: 768px) {
    .contact-info-upper-container {
        flex-direction: column;
        width: 100%;
    }
}

.contact-info-upper-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-info-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1rem;
    transition: all 0.3s ease;
}

.contact-info-container:hover {
    transform: scale(1.05);
}

.contact-info-container p {
    font-size: larger;
}

@media screen and (max-width: 768px) {
    .contact-info-container p {
        font-size: medium;
    }
}

.contact-icon {
    cursor: default;
}

.email-icon {
    height: 2.5rem;
    transition: transform 0.3s ease;
}

.email-icon:hover {
    transform: rotate(10deg);
}


/* FOOTER SECTION */

footer {
    height: 26vh;
    margin: 0 1rem;
    animation: fadeIn 1s ease;
}

@media screen and (max-width: 768px) {
    footer {
        height: auto;
        padding: 2rem 0;
    }
}

footer p {
    text-align: center;
}

.section__pic-container img {
    width: 280px;
    /* chỉnh kích thước cho cân đối */
    height: auto;
    border-radius: 20px;
    /* bo góc mềm mại */
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.15), 0 0 50px rgba(0, 191, 255, 0.3);
    /* hiệu ứng glow xanh giống nền */
    border: 2px solid rgba(255, 255, 255, 0.1);
    /* viền mảnh nhẹ */
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}


/* Hiệu ứng khi hover vào ảnh */

.section__pic-container img:hover {
    transform: scale(1.08);
    /* phóng to nhẹ */
    box-shadow: 0 0 30px rgba(0, 255, 200, 0.6), 0 0 60px rgba(0, 191, 255, 0.8);
}

.music-player {
    position: absolute;
    /* hoặc fixed nếu muốn cố định khi cuộn */
    top: 100px;
    /* chỉnh khoảng cách từ menu xuống */
    left: 40px;
    /* chỉnh khoảng cách từ mép trái */
    z-index: 1000;
    background: rgba(0, 0, 0, 0.5);
    /* nền mờ để nhìn rõ */
    padding: 12px;
    border-radius: 12px;
    backdrop-filter: blur(6px);
    /* hiệu ứng kính mờ */
}

html,
body {
    height: 100%;
}

body {
    background: #0f3854;
    background: radial-gradient(ellipse at center, #0a2e38 0%, #000000 70%);
    background-size: 100%;
}

p {
    margin: 0;
    padding: 0;
}

#clock {
    font-family: 'Share Tech Mono', monospace;
    color: #ffffff;
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: #daf6ff;
    text-shadow: 0 0 20px rgba(10, 175, 230, 1), 0 0 20px rgba(10, 175, 230, 0);
    .time {
        letter-spacing: 0.05em;
        font-size: 80px;
        padding: 5px 0;
    }
    .date {
        letter-spacing: 0.1em;
        font-size: 24px;
    }
    .text {
        letter-spacing: 0.1em;
        font-size: 12px;
        padding: 20px 0 0;
    }
}