/* CSS đã sửa lỗi và tổ chức lại */

/* ===== BIẾN VÀ RESET ===== */
:root{
    --primary:#6c63ff;
    --secondary:#ff6584;
    --dark:#0e0e0e;
    --light:#f7fafc;
    --success:#0cce6b;
    --text:#4a5568;
    --card-bg:hsla(0,0%,100%,.03);
    --card-border:hsla(0,0%,100%,.1);
    --gradient-1:linear-gradient(45deg,#6c63ff,#764ba2);
    --gradient-2:linear-gradient(45deg,#ff6584,#ff8c69);
    --gradient-3:linear-gradient(45deg,#0cce6b,#00b4d8);
    --gradient-4:linear-gradient(45deg,#ffb700,#ff6b00);
    --contact-gradient:linear-gradient(135deg, #8a2be2, #4169e1);
    --typing-color: #ff3333;
}

*{
    box-sizing:border-box;
    font-family:Poppins,sans-serif;
    margin:0;
    padding:0;
}

body{
    background-color:var(--dark);
    color:var(--light);
    min-height:100vh;
    overflow-x:hidden;
}

a {
    text-decoration: none;
}

button {
    font-family: 'Poppins', sans-serif;
}

/* ===== BACKGROUND EFFECTS ===== */
.noise{
    background-image:url(https://grainy-gradients.vercel.app/noise.svg);
    left:0;
    opacity:.03;
    pointer-events:none;
    top:0;
    z-index:1;
    height:100%;
    position:fixed;
    width:100%;
}

#particles-js{
    height:100%;
    position:fixed;
    width:100%;
    z-index:0;
}

.glow{
    animation:pulse 8s infinite alternate;
    background:radial-gradient(circle,var(--primary) 0,rgba(108,99,255,0) 70%);
    border-radius:50%;
    filter:blur(50px);
    height:300px;
    opacity:.3;
    position:fixed;
    width:300px;
    z-index:-1;
}

.glow:first-child{
    left:10%;
    top:20%;
}

.glow:nth-child(2){
    animation-delay:2s;
    background:radial-gradient(circle,var(--secondary) 0,rgba(255,101,132,0) 70%);
    right:10%;
    top:20%;
}

.glow:nth-child(3){
    animation-delay:4s;
    background:radial-gradient(circle,var(--success) 0,rgba(12,206,107,0) 70%);
    bottom:20%;
    left:30%;
}

@keyframes pulse{
    0%{
        opacity:.2;
        transform:scale(.8);
    }
    to{
        opacity:.4;
        transform:scale(1.2);
    }
}

/* ===== MAIN LAYOUT ===== */
.container{
    margin:0 auto;
    max-width:1400px;
    padding:3rem 20px;
    position:relative;
    z-index:2;
    padding-top: 80px; /* Đảm bảo nội dung không bị che bởi header cố định */
}

/* ===== HEADER & NAVIGATION ===== */
/* Header cố định */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 15, 25, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 40px;
    max-width: 1400px;
    margin: 0 auto;
    height: 60px;
}

/* Logo và tên website trong header */
.header-logo {
    display: flex;
    align-items: center;
    transition: opacity 0.3s ease;
}

.header-logo:hover {
    opacity: 0.9;
}

.nav-logo {
    height: 36px;
    width: auto;
    margin-right: 12px;
    border-radius: 50%;
}

.header-title {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(90deg, #9b59b6, #e74c3c);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 1px;
}

/* Navigation buttons */
.nav-buttons {
    display: flex;
    gap: 15px;
}

.nav-button {
    border-radius: 6px;
    padding: 8px 18px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
    border: 1px solid;
    color: white;
    background-color: transparent;
}

.service-btn {
    border-color: rgba(231, 76, 60, 0.6);
    background: rgba(231, 76, 60, 0.1);
}

.service-btn:hover {
    background: rgba(231, 76, 60, 0.25);
    box-shadow: 0 6px 14px rgba(231, 76, 60, 0.25);
    transform: translateY(-3px);
}

.tech-btn {
    border-color: rgba(52, 152, 219, 0.6);
    background: rgba(52, 152, 219, 0.1);
}

.tech-btn:hover {
    background: rgba(52, 152, 219, 0.25);
    box-shadow: 0 6px 14px rgba(52, 152, 219, 0.25);
    transform: translateY(-3px);
}

.contact-btn {
    border-color: rgba(46, 204, 113, 0.6);
    background: rgba(46, 204, 113, 0.1);
}

.contact-btn:hover {
    background: rgba(46, 204, 113, 0.25);
    box-shadow: 0 6px 14px rgba(46, 204, 113, 0.25);
    transform: translateY(-3px);
}

.nav-button:active {
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

/* Menu mobile */
.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: #fff;
    cursor: pointer;
    transition: color 0.3s ease;
}

.mobile-menu-toggle:hover {
    color: #e74c3c;
}

.mobile-nav {
    display: none;
    padding: 15px;
    background: rgba(15, 15, 25, 0.95);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-link {
    display: block;
    color: #fff;
    text-decoration: none;
    padding: 15px 10px;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    padding-left: 15px;
    color: #e74c3c;
}

/* ===== HERO SECTION ===== */
.header{
    align-items:center;
    display:flex;
    flex-direction:column;
    margin-bottom:4rem;
    text-align:center;
}

.logo-container{
    margin-bottom:2rem;
}

.logo{
    filter:drop-shadow(0 0 10px rgba(108,99,255,.5));
    width: 180px;
    height: 180px;
    margin: 0 auto 15px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.title{
    background:linear-gradient(to right,var(--primary),var(--secondary));
    -webkit-background-clip:text;
    font-size:4rem;
    font-weight:800;
    margin-bottom:1rem;
    -webkit-text-fill-color:transparent;
    line-height:1.1;
}

.subtitle{
    color:hsla(0,0%,100%,.8);
    font-size:1.2rem;
    margin-bottom:2rem;
    max-width:700px;
}

/* Typing effect */
.subtitle-container {
    display: inline-block;
    margin: 10px 0 15px;
}

.typing-effect {
    font-weight: 700;
    font-size: 1.2rem;
    color: #ffffff;
    text-shadow: 0 0 5px var(--typing-color), 0 0 10px var(--typing-color), 0 0 15px var(--typing-color);
    border-right: 3px solid var(--typing-color);
    white-space: nowrap;
    overflow: hidden;
    animation: typing 3.5s steps(30, end), 
               blink-caret 0.75s step-end infinite,
               glow 2s ease-in-out infinite alternate;
    display: inline-block;
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--typing-color) }
}

@keyframes glow {
    from {
        text-shadow: 0 0 5px var(--typing-color), 0 0 10px var(--typing-color), 0 0 15px var(--typing-color);
    }
    to {
        text-shadow: 0 0 10px var(--typing-color), 0 0 20px var(--typing-color), 0 0 30px var(--typing-color);
    }
}

/* ===== SECTION TITLES ===== */
.section-title{
    display:inline-block;
    font-size:2rem;
    font-weight:700;
    left:50%;
    margin-bottom:2rem;
    position:relative;
    text-align:center;
    transform:translateX(-50%)!important;
}

.section-title2{
    left:unset;
    text-align:center;
    transform:unset!important;
}

.section-title:after{
    background:linear-gradient(to right,var(--primary),var(--secondary));
    border-radius:3px;
    bottom:-10px;
    content:"";
    height:3px;
    left:0;
    position:absolute;
    width:100%;
}

/* ===== PROJECTS SECTION ===== */
.projects-section{
    margin-top:3rem;
}

.projects-grid{
    display:grid;
    gap:2rem;
    grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
    margin-top:3rem;
}

.project-card{
    backdrop-filter:blur(10px);
    background:var(--card-bg);
    border:1px solid var(--card-border);
    border-radius:15px;
    display:flex;
    flex-direction:column;
    height:100%;
    overflow:hidden;
    padding:2rem;
    position:relative;
    transition:all .3s ease;
}

.project-card:hover{
    border-color:hsla(0,0%,100%,.2);
    box-shadow:0 20px 30px rgba(0,0,0,.2);
    transform:translateY(-10px);
}

.project-card:before{
    background:var(--gradient-1);
    content:"";
    height:5px;
    left:0;
    position:absolute;
    top:0;
    width:100%;
}

.project-card:nth-child(2):before{
    background:var(--gradient-2);
}

.project-card:nth-child(3):before{
    background:var(--gradient-3);
}

.project-card:nth-child(4):before{
    background:var(--gradient-4);
}

.project-icon{
    align-items:center;
    background:var(--gradient-1);
    border-radius:12px;
    box-shadow:0 10px 20px rgba(108,99,255,.3);
    display:flex;
    font-size:1.8rem;
    height:60px;
    justify-content:center;
    margin-bottom:1.5rem;
    width:60px;
}

.project-card:nth-child(2) .project-icon{
    background:var(--gradient-2);
    box-shadow:0 10px 20px rgba(255,101,132,.3);
}

.project-card:nth-child(3) .project-icon{
    background:var(--gradient-3);
    box-shadow:0 10px 20px rgba(12,206,107,.3);
}

.project-card:nth-child(4) .project-icon{
    background:var(--gradient-4);
    box-shadow:0 10px 20px rgba(255,183,0,.3);
}

.project-title{
    color:var(--light);
    font-size:1.5rem;
    font-weight:700;
    margin-bottom:1rem;
}

.project-description{
    color:hsla(0,0%,100%,.7);
    flex-grow:1;
    line-height:1.6;
    margin-bottom:1.5rem;
}

.project-features{
    margin-top:1.5rem;
}

.project-feature{
    align-items:center;
    display:flex;
    margin-bottom:.8rem;
}

.project-feature i{
    color:var(--primary);
    font-size:.9rem;
    margin-right:.8rem;
}

.project-card:nth-child(2) .project-feature i{
    color:var(--secondary);
}

.project-card:nth-child(3) .project-feature i{
    color:var(--success);
}

.project-card:nth-child(4) .project-feature i{
    color:#ffb700;
}

.project-feature-text{
    color:hsla(0,0%,100%,.8);
    font-size:.9rem;
}

.project-status{
    background:rgba(108,99,255,.2);
    border:1px solid rgba(108,99,255,.3);
    border-radius:50px;
    color:var(--primary);
    display:inline-block;
    font-size:.8rem;
    font-weight:600;
    margin-top:1.5rem;
    padding:.5rem 1rem;
}

.project-card:nth-child(2) .project-status{
    background:rgba(255,101,132,.2);
    border:1px solid rgba(255,101,132,.3);
    color:var(--secondary);
}

.project-card:nth-child(3) .project-status{
    background:rgba(12,206,107,.2);
    border:1px solid rgba(12,206,107,.3);
    color:var(--success);
}

.project-card:nth-child(4) .project-status{
    background:rgba(255,183,0,.2);
    border:1px solid rgba(255,183,0,.3);
    color:#ffb700;
}

/* ===== TECH STACK SECTION ===== */
.tech-stack{
    margin-top:5rem;
    text-align:center;
}

.tech-title{
    color:hsla(0,0%,100%,.9);
    font-size:1.2rem;
    font-weight:600;
    margin-bottom:2rem;
}

.tech-grid{
    display:flex;
    flex-wrap:wrap;
    gap:2rem;
    justify-content:center;
    margin-top:2rem;
}

.tech-item{
    align-items:center;
    display:flex;
    flex-direction:column;
    transition:all .3s ease;
}

.tech-item:hover{
    transform:translateY(-5px);
}

.tech-icon{
    align-items:center;
    background:var(--card-bg);
    border:1px solid var(--card-border);
    border-radius:12px;
    display:flex;
    font-size:2rem;
    height:60px;
    justify-content:center;
    margin-bottom:1rem;
    transition:all .3s ease;
    width:60px;
}

.tech-item:hover .tech-icon{
    background:var(--gradient-1);
    border-color:transparent;
}

.tech-item:nth-child(2):hover .tech-icon{
    background:var(--gradient-2);
}

.tech-item:nth-child(3):hover .tech-icon{
    background:var(--gradient-3);
}

.tech-item:nth-child(4):hover .tech-icon{
    background:var(--gradient-4);
}

.tech-item:nth-child(5):hover .tech-icon{
    background:linear-gradient(45deg,#00c6ff,#0072ff);
}

.tech-item:nth-child(6):hover .tech-icon{
    background:linear-gradient(45deg,#f857a6,#ff5858);
}

.tech-name{
    color:hsla(0,0%,100%,.8);
    font-size:.9rem;
}

/* ===== CONTACT SECTION ===== */
.contact-section {
    padding: 40px 20px;
    text-align: center;
    margin-top: 60px;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.contact-description {
    color: #ccc;
    margin-bottom: 40px;
    font-size: 1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contact-row {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: nowrap;
    padding: 0 20px;
}

.contact-item {
    background: rgba(20, 20, 20, 0.7);
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    flex: 1;
    min-width: 0;
    margin: 0 5px;
}

.contact-row a.contact-item {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    background: rgba(20, 20, 20, 0.7);
    border-radius: 10px;
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    flex: 1;
    min-width: 0;
    margin: 0 5px;
}

.contact-item:hover,
.contact-row a.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(138, 43, 226, 0.7);
    background: rgba(30, 30, 30, 0.8);
}

.contact-row a.contact-item:active {
    transform: translateY(-2px);
    transition: transform 0.1s ease;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--contact-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 1.2rem;
    color: white;
    flex-shrink: 0;
}

.contact-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.contact-title {
    font-size: 1rem;
    margin: 0 0 5px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
}

.contact-detail {
    font-size: 0.9rem;
    margin: 0;
    color: #aaa;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== FOOTER ===== */
.footer{
    border-top:1px solid hsla(0,0%,100%,.1);
    margin-top:5rem;
    padding:2rem 0;
    text-align:center;
}

.footer-text{
    color:hsla(0,0%,100%,.6);
    font-size:.9rem;
}

.footer_link{
    background:linear-gradient(to right,var(--primary),var(--secondary));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    font-weight:600;
    text-decoration:none;
}

/* ===== CUSTOM CURSORS ===== */
.custom-cursor{
    background:var(--primary);
    border-radius:50%;
    height:20px;
    mix-blend-mode:difference;
    pointer-events:none;
    position:fixed;
    transform:translate(-50%,-50%);
    transition:width .3s,height .3s,background .3s;
    width:20px;
    z-index:9999;
}

.cursor-dot{
    background:#fff;
    border-radius:50%;
    height:5px;
    pointer-events:none;
    position:fixed;
    transform:translate(-50%,-50%);
    transition:transform .1s;
    width:5px;
    z-index:9999;
}

/* ===== MEDIA QUERIES ===== */
@media (max-width:992px){
    .title{
        font-size:3rem;
    }
    .projects-grid{
        grid-template-columns:repeat(auto-fill,minmax(250px,1fr));
    }
    .contact-row {
        flex-wrap: wrap;
        padding: 0 10px;
    }
    .contact-item,
    .contact-row a.contact-item {
        flex-basis: calc(50% - 20px);
        min-width: calc(50% - 20px);
    }
}

@media (max-width:768px){
    .tech-grid{
        gap:1.5rem;
    }
    .tech-icon{
        font-size:1.5rem;
        height:50px;
        width:50px;
    }
    .header-container {
        padding: 12px 20px;
    }
    .desktop-nav {
        display: none;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .mobile-nav.open {
        display: block;
    }
    .header-title {
        font-size: 1.2rem;
    }
    .nav-logo {
        height: 30px;
    }
    .contact-item,
    .contact-row a.contact-item {
        flex-basis: 100%;
        min-width: 100%;
    }
}

@media (max-width:576px){
    .title{
        font-size:2.5rem;
    }
    .subtitle{
        font-size:1rem;
    }
    .projects-grid{
        grid-template-columns:1fr;
    }
    .tech-grid{
        gap:1rem;
    }
    .tech-icon{
        font-size:1.3rem;
        height:45px;
        width:45px;
    }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.9), rgba(118, 75, 162, 0.9));
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
}

.back-to-top i {
    font-size: 20px;
}

.verified-badge {
    color: #1da1f2; /* Màu xanh Twitter/Facebook */
    font-size: 0.85em;
    margin-left: 4px;
    vertical-align: middle;
}

/* Hiệu ứng lấp lánh nhẹ cho tích xanh */
@keyframes badge-glow {
    0%, 100% { text-shadow: 0 0 3px rgba(29, 161, 242, 0.4); }
    50% { text-shadow: 0 0 6px rgba(29, 161, 242, 0.6); }
}

.verified-badge {
    animation: badge-glow 2s infinite;
}
#particles-js, .noise, .three-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#particles-js {
    z-index: 0;
}

.three-background {
    z-index: 0;
    pointer-events: none;
}

.noise {
    background-image: url(https://grainy-gradients.vercel.app/noise.svg);
    opacity: .03;
    pointer-events: none;
    z-index: 1;
}

.glow {
    animation: pulse 8s infinite alternate;
    border-radius: 50%;
    filter: blur(50px);
    height: 300px;
    opacity: .3;
    position: fixed;
    width: 300px;
    z-index: -1;
}

.glow:first-child {
    background: radial-gradient(circle, var(--primary) 0, rgba(108,99,255,0) 70%);
    left: 10%;
    top: 20%;
}

.glow:nth-child(2) {
    animation-delay: 2s;
    background: radial-gradient(circle, var(--secondary) 0, rgba(255,101,132,0) 70%);
    right: 10%;
    top: 20%;
}

.glow:nth-child(3) {
    animation-delay: 4s;
    background: radial-gradient(circle, var(--success) 0, rgba(12,206,107,0) 70%);
    bottom: 20%;
    left: 30%;
}

@keyframes pulse {
    0% {
        opacity: .2;
        transform: scale(.8);
    }
    100% {
        opacity: .4;
        transform: scale(1.2);
    }
}

/* Đảm bảo nội dung trang hiển thị trên các hiệu ứng */
.container {
    position: relative;
    z-index: 2;
}
/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.9), rgba(118, 75, 162, 0.9));
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 999;
}

.theme-toggle:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
}

.theme-toggle i {
    font-size: 20px;
    transition: transform 0.5s ease;
}

/* Dark theme là mặc định, thêm class cho theme sáng */
body.light-theme {
    background-color: #f0f0f0;
    color: #333;
}

/* Các styles cho theme sáng */
body.light-theme .noise {
    opacity: 0.05;
}

body.light-theme .glow {
    opacity: 0.2;
}

body.light-theme .main-header {
    background: rgba(240, 240, 240, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .header-title {
    background: linear-gradient(90deg, #7048e8, #e74c3c);
    -webkit-background-clip: text;
    background-clip: text;
}

body.light-theme .mobile-nav {
    background: rgba(240, 240, 240, 0.95);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .mobile-nav-link {
    color: #333;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .mobile-nav-link:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #e74c3c;
}

body.light-theme .nav-button {
    color: #333;
}

body.light-theme .title {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
}

body.light-theme .subtitle {
    color: rgba(0, 0, 0, 0.8);
}

body.light-theme .typing-effect {
    color: #333;
    text-shadow: 0 0 2px var(--typing-color), 0 0 4px var(--typing-color);
}

body.light-theme .project-card {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .project-title {
    color: #333;
}

body.light-theme .project-description {
    color: rgba(0, 0, 0, 0.7);
}

body.light-theme .project-feature-text {
    color: rgba(0, 0, 0, 0.8);
}

body.light-theme .tech-name {
    color: rgba(0, 0, 0, 0.8);
}

body.light-theme .tech-icon {
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .contact-item {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .contact-title {
    color: #333;
}

body.light-theme .contact-detail {
    color: #555;
}

body.light-theme .footer {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-theme .footer-text {
    color: rgba(0, 0, 0, 0.6);
}

/* Đổi icon khi ở light theme */
body.light-theme .theme-toggle i {
    transform: rotate(360deg);
}

body.light-theme .theme-toggle i:before {
    content: "\f185"; /* Đổi icon sang mặt trời */
}