:root {
    --primary: #00d9ff;
    --secondary: #7000ff;
    --accent: #ff0099;
    --background: #030014;
    --surface: #0a0a1a;
    --surface-2: #12122a;
    --text: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --glow: 0 0 10px rgba(0, 217, 255, 0.5);
    --neon: 0 0 5px #00d9ff, 0 0 20px rgba(0, 217, 255, 0.3);
}
/*code được viết bởi Cate đăng lại nhớ ghi bản quyền*/
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--background);
    color: var(--text);
    overflow-x: hidden;
    background-image: radial-gradient(circle at 50% 0%, rgba(0, 217, 255, 0.1), transparent 50%);
}

.syne {
    font-family: 'Syne', sans-serif;
}

.orbitron {
    font-family: 'Orbitron', sans-serif;
}

.bg-glass {
    background: rgba(10, 10, 26, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.bg-glass-dark {
    background: rgba(3, 0, 20, 0.8);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(112, 0, 255, 0.1);
    box-shadow: var(--glow);
}
/*code được viết bởi Cate đăng lại nhớ ghi bản quyền*/
.text-gradient {
    background: linear-gradient(to right, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.border-gradient {
    position: relative;
    transition: all 0.3s ease;
}

.border-gradient::before {
    content: "";
    position: absolute;
    inset: 0;
    padding: 1px;
    border-radius: inherit;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    background-size: 400% 400%;
    animation: gradient-rotate 8s linear infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.hover-lift {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.4s ease;
}

.hover-lift:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--neon);
}

.tech-pill {
    background: rgba(10, 10, 26, 0.5);
    border: 1px solid rgba(0, 217, 255, 0.1);
    border-radius: 100px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.tech-pill:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--glow);
}

.tech-pill::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 217, 255, 0.1), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
    pointer-events: none;
}

@keyframes shine {
    0% {
        left: -50%;
        top: -50%;
    }
    100% {
        left: 150%;
        top: 150%;
    }
}

#vanta-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.social-icon {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.social-icon:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--glow);
}

.social-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    border-radius: inherit;
}

.social-icon:hover::before {
    opacity: 0.2;
}

.animated-border {
    position: relative;
    transition: all 0.3s ease;
}

.animated-border::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: width 0.4s ease;
    box-shadow: var(--glow);
}

.animated-border:hover {
    text-shadow: var(--glow);
}

.animated-border:hover::after {
    width: 100%;
}

.progress-bar {
    height: 6px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    border-radius: 3px;
    transition: width 1.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--glow);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: progress-shine 2s infinite;
}

@keyframes progress-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.skill-container:hover .progress-bar {
    background: linear-gradient(to right, var(--accent), var(--primary));
}

.avatar-container {
    position: relative;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--neon);
}

.avatar-container:hover {
    transform: scale(1.05) rotate(2deg);
}

.avatar-container::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent), var(--primary));
    background-size: 400% 400%;
    border-radius: inherit;
    z-index: -1;
    animation: gradient-rotate 5s ease infinite;
    filter: blur(5px);
}

@keyframes gradient-rotate {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.floating-element {
    animation: floating 6s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(1deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
    mix-blend-mode: screen;
}

.scanner-line {
    position: absolute;
    height: 2px;
    width: 100%;
    background: linear-gradient(to right, transparent, var(--primary), transparent);
    top: 0;
    animation: scan 3s ease-in-out infinite;
    box-shadow: var(--glow);
}

@keyframes scan {
    0% { top: 0; opacity: 0; }
    5% { opacity: 1; }
    95% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.grid-pattern {
    background-image: 
        radial-gradient(circle at center, rgba(0, 217, 255, 0.03) 1px, transparent 1px),
        radial-gradient(circle at center, rgba(0, 217, 255, 0.02) 1px, transparent 1px);
    background-size: 30px 30px, 90px 90px;
    background-position: 0 0, 15px 15px;
}

.section-heading {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-heading::before {
    content: '';
    display: block;
    width: 5px;
    height: 30px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    margin-right: 15px;
    border-radius: 3px;
    box-shadow: var(--glow);
}
/*code được viết bởi Cate đăng lại nhớ ghi bản quyền*/
.typing-cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background-color: var(--primary);
    margin-left: 4px;
    animation: blink 1s step-end infinite;
    box-shadow: var(--glow);
}

@keyframes blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

.glow-text {
    text-shadow: var(--glow);
}

.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.card-3d:hover .card-inner {
    transform: rotateY(10deg) rotateX(5deg);
}

.holographic {
    position: relative;
    overflow: hidden;
}

.holographic::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(125deg, 
        rgba(255,255,255,0) 0%, 
        rgba(255,255,255,0.05) 25%, 
        rgba(255,255,255,0.1) 50%, 
        rgba(255,255,255,0.05) 75%, 
        rgba(255,255,255,0) 100%);
    background-size: 400% 400%;
    animation: holographic 5s ease infinite;
    pointer-events: none;
}

@keyframes holographic {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.neon-button {
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    z-index: 1;
}

.neon-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    opacity: 0;
    z-index: -1;
    transition: opacity 0.4s ease;
}

.neon-button:hover::before {
    opacity: 1;
}

.neon-button:hover {
    color: white;
    box-shadow: var(--neon);
    text-shadow: var(--glow);
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 50%;
    animation: particle-float 10s linear infinite;
    opacity: 0.5;
}

@keyframes particle-float {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) translateX(20px); opacity: 0; }
}
/*code được viết bởi Cate đăng lại nhớ ghi bản quyền*/
.cursor-trail {
    position: absolute;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: rgba(0, 217, 255, 0.6);
    pointer-events: none;
    z-index: 9999;
    opacity: 1;
    transform: translate(-50%, -50%);
    animation: trail 1s forwards;
    box-shadow: var(--glow);
}

@keyframes trail {
    0% {
        opacity: 0.6;
        width: 5px;
        height: 5px;
    }
    100% {
        opacity: 0;
        width: 50px;
        height: 50px;
    }
}

.animate-border::before {
    animation: border-pulse 2s infinite;
}

@keyframes border-pulse {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.5;
    }
}
 
html {
    scroll-behavior: smooth;
}
 
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--secondary), var(--accent));
}
 
.flip-card {
    perspective: 1000px;
    height: 100%;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}
/*code được viết bởi Cate đăng lại nhớ ghi bản quyền*/
.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: inherit;
}

.flip-card-back {
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}
 
.glitch {
    position: relative;
}

.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    left: 2px;
    text-shadow: -1px 0 var(--accent);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -1px 0 var(--primary);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(15px, 9999px, 30px, 0); }
    5% { clip: rect(56px, 9999px, 98px, 0); }
    10% { clip: rect(25px, 9999px, 57px, 0); }
    15% { clip: rect(82px, 9999px, 98px, 0); }
    20% { clip: rect(30px, 9999px, 61px, 0); }
    25% { clip: rect(25px, 9999px, 88px, 0); }
    30% { clip: rect(18px, 9999px, 86px, 0); }
    35% { clip: rect(71px, 9999px, 83px, 0); }
    40% { clip: rect(71px, 9999px, 22px, 0); }
    45% { clip: rect(13px, 9999px, 91px, 0); }
    50% { clip: rect(44px, 9999px, 5px, 0); }
    55% { clip: rect(51px, 9999px, 21px, 0); }
    60% { clip: rect(8px, 9999px, 98px, 0); }
    65% { clip: rect(4px, 9999px, 41px, 0); }
    70% { clip: rect(89px, 9999px, 37px, 0); }
    75% { clip: rect(3px, 9999px, 10px, 0); }
    80% { clip: rect(28px, 9999px, 37px, 0); }
    85% { clip: rect(62px, 9999px, 33px, 0); }
    90% { clip: rect(68px, 9999px, 54px, 0); }
    95% { clip: rect(14px, 9999px, 79px, 0); }
    100% { clip: rect(12px, 9999px, 31px, 0); }
}

@keyframes glitch-anim2 {
    0% { clip: rect(65px, 9999px, 91px, 0); }
    5% { clip: rect(1px, 9999px, 46px, 0); }
    10% { clip: rect(20px, 9999px, 55px, 0); }
    15% { clip: rect(89px, 9999px, 46px, 0); }
    20% { clip: rect(87px, 9999px, 30px, 0); }
    25% { clip: rect(42px, 9999px, 60px, 0); }
    30% { clip: rect(61px, 9999px, 49px, 0); }
    35% { clip: rect(81px, 9999px, 63px, 0); }
    40% { clip: rect(10px, 9999px, 75px, 0); }
    45% { clip: rect(6px, 9999px, 100px, 0); }
    50% { clip: rect(82px, 9999px, 31px, 0); }
    55% { clip: rect(41px, 9999px, 22px, 0); }
    60% { clip: rect(23px, 9999px, 76px, 0); }
    65% { clip: rect(38px, 9999px, 27px, 0); }
    70% { clip: rect(71px, 9999px, 68px, 0); }
    75% { clip: rect(2px, 9999px, 70px, 0); }
    80% { clip: rect(71px, 9999px, 42px, 0); }
    85% { clip: rect(28px, 9999px, 25px, 0); }
    90% { clip: rect(25px, 9999px, 55px, 0); }
    95% { clip: rect(24px, 9999px, 75px, 0); }
    100% { clip: rect(52px, 9999px, 11px, 0); }
}

 
.card-3d-wrapper {
    perspective: 1500px;
}

.card-3d-wrapper:hover .card-3d-content {
    transform: rotateY(10deg) rotateX(5deg);
}

.card-3d-content {
    transition: transform 0.5s ease;
    transform-style: preserve-3d;
}
 
.cyberpunk-badge {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--primary);
    box-shadow: var(--glow);
}

.cyberpunk-badge::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 217, 255, 0.2), transparent);
    transform: rotate(45deg);
    animation: badge-shine 3s infinite;
}

@keyframes badge-shine {
    0% {
        left: -50%;
        top: -50%;
    }
    100% {
        left: 150%;
        top: 150%;
    }
}

 
.neon-text {
    text-shadow: 0 0 5px var(--primary), 0 0 10px var(--primary), 0 0 20px var(--primary);
} 
.online-indicator {
position: relative;
display: inline-block;
width: 10px;
height: 10px;
background-color: #00ff4c;
border-radius: 50%;
box-shadow: 0 0 10px #00ff4c;
margin-right: 5px;
vertical-align: middle;
}

.online-indicator.pulse {
animation: pulse 1.5s infinite;
}

@keyframes pulse {
0% {
box-shadow: 0 0 0 0 rgba(0, 255, 76, 0.7);
}
70% {
box-shadow: 0 0 0 10px rgba(0, 255, 76, 0);
}
100% {
box-shadow: 0 0 0 0 rgba(0, 255, 76, 0);
}
}

.social-button {
cursor: pointer;
transition: all 0.3s ease;
position: relative;
overflow: hidden;
}

.social-button:before {
content: '';
position: absolute;
top: -50%;
left: -50%;
width: 200%;
height: 200%;
background: rgba(0, 195, 255, 0.1);
transform: rotate(45deg);
pointer-events: none;
opacity: 0;
transition: opacity 0.5s ease;
}

.social-button.hover-glow:before {
opacity: 1;
animation: rotate 2s linear infinite;
}

.social-button.hover-glow {
transform: translateY(-5px);
box-shadow: 0 0 15px rgba(0, 195, 255, 0.5);
}

@keyframes rotate {
from {
transform: rotate(45deg);
}
to {
transform: rotate(405deg);
}
}

#interactive-bg {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: -1;
pointer-events: none;
}
 
.social-card-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(3, 0, 20, 0.4);
    border: 1px solid rgba(0, 217, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    width: 100%;
    cursor: pointer;
}

.social-card-btn:hover {
    transform: translateY(-5px);
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.social-card-btn:focus {
    outline: none;
    box-shadow: var(--glow), 0 0 0 3px rgba(0, 217, 255, 0.3);
}
.social-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(3, 0, 20, 0.6);
    border: 1px solid rgba(0, 217, 255, 0.2);
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.social-card-btn:hover .social-card-icon {
    background: rgba(0, 217, 255, 0.15);
    transform: scale(1.1);
    box-shadow: var(--glow);
}

.social-card-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-card-btn:hover .social-card-text {
    color: var(--primary);
}
.social-card-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(3, 0, 20, 0.4);
    border: 1px solid rgba(0, 217, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-card-link:hover {
    transform: translateY(-5px);
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.social-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(3, 0, 20, 0.6);
    border: 1px solid rgba(0, 217, 255, 0.2);
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.social-card-link:hover .social-card-icon {
    background: rgba(0, 217, 255, 0.15);
    transform: scale(1.1);
    box-shadow: var(--glow);
}

.social-card-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-card-link:hover .social-card-text {
    color: var(--primary);
}

.donate-option {
    background: rgba(3, 0, 20, 0.4);
    border: 1px solid rgba(0, 217, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.donate-option:hover {
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.donate-header {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(10, 10, 26, 0.6);
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

.donate-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(3, 0, 20, 0.6);
    border: 1px solid rgba(0, 217, 255, 0.2);
    color: var(--accent);
    font-size: 1rem;
    margin-right: 0.75rem;
}

.donate-content {
    padding: 1rem;
}

.donate-address {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid rgba(0, 217, 255, 0.1);
}

.copy-btn {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 217, 255, 0.1);
    color: var(--primary);
    border: 1px solid rgba(0, 217, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: rgba(0, 217, 255, 0.2);
    transform: scale(1.1);
}

.donate-button {
    display: block;
    width: 100%;
    padding: 0.75rem;
    text-align: center;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.donate-button::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
    pointer-events: none;
}

.donate-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow);
}