body {
    background-color: #0a0a0a;
    color: #f7f8f8;
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.glass-panel {
    background: rgba(28, 27, 27, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 242, 255, 0.1);
}
.neon-glow-cyan {
    text-shadow: 0 0 20px rgba(0, 242, 255, 0.4), 0 0 40px rgba(0, 242, 255, 0.1);
}
.bg-gradient-primary {
    background: linear-gradient(135deg, #00f2ff 0%, #006a71 100%);
    box-shadow: 0 0 15px rgba(0, 242, 255, 0.2);
}
.bg-gradient-primary:hover {
    box-shadow: 0 0 25px rgba(0, 242, 255, 0.5);
}
.light-leak-purple {
    background: radial-gradient(circle at center, rgba(188, 19, 254, 0.1) 0%, transparent 70%);
}
.light-leak-cyan {
    background: radial-gradient(circle at center, rgba(0, 242, 255, 0.08) 0%, transparent 70%);
}
.digital-rain {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(19, 19, 19, 0.9), rgba(19, 19, 19, 0.9)), 
                url('https://www.transparenttextures.com/patterns/carbon-fibre.png');
    opacity: 0.15;
    pointer-events: none;
}
.parallax-bg {
    transform: translateY(var(--scroll-offset, 0));
    transition: transform 0.1s ease-out;
}
.hover-card {
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}
.hover-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 242, 255, 0.3);
    background: rgba(42, 42, 42, 0.6);
}
.neon-border {
    border: 1px solid rgba(0, 242, 255, 0.2);
    position: relative;
}
.neon-border::after {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(90deg, transparent, rgba(0, 242, 255, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}
.neon-border:hover::after {
    opacity: 1;
}
.brand-logo {
    filter: drop-shadow(0 0 10px rgba(0, 242, 255, 0.25));
}
.brand-logo-wrap {
    width: 188px;
    height: 44px;
    overflow: hidden;
    display: flex;
    align-items: center;
}
.brand-wordmark {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: #f7f8f8;
    line-height: 1;
    white-space: nowrap;
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.25);
}
.brand-wordmark-header {
    font-size: 1.9rem;
    letter-spacing: 0.3em;
}
.brand-logo-header {
    height: 44px;
    width: auto;
    object-fit: contain;
    transform: scale(1.68);
    transform-origin: left center;
}

@media (max-width: 768px) {
    .brand-logo-wrap {
        width: 150px;
        height: 37px;
    }
    .brand-wordmark-header {
        font-size: 1.2rem;
        letter-spacing: 0.24em;
    }
    .brand-logo-header {
        height: 37px;
        transform: scale(1.52);
    }
}

/* ===== HIỆU ỨNG MỚI ===== */

/* Fade-in Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

/* Floating Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* Glow Pulse */
@keyframes glowPulse {
    0%, 100% {
        filter: drop-shadow(0 0 10px rgba(0, 242, 255, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 25px rgba(0, 242, 255, 0.6));
    }
}

.glow-pulse {
    animation: glowPulse 2s ease-in-out infinite;
}

/* Rotating Border */
@keyframes rotateBorder {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.animate-border {
    background: linear-gradient(90deg, #00f2ff, #bc13fe, #00f2ff, #bc13fe, #00f2ff);
    background-size: 200% 200%;
    animation: rotateBorder 3s ease infinite;
}

/* Text shimmer effect */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer-text {
    background: linear-gradient(90deg, #f7f8f8, #00f2ff, #f7f8f8);
    background-size: 200% 100%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s infinite;
}

/* Scale up animation */
@keyframes scaleUp {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.scale-animation {
    animation: scaleUp 0.6s ease-out;
}

/* Slide in animation */
@keyframes slideInLeft {
    from {
        transform: translateX(-100px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

/* Rotating icon animation */
@keyframes rotate360 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.rotate-animation {
    animation: rotate360 4s linear infinite;
}

/* Particle animation */
@keyframes moveParticle {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        transform: translate(var(--tx, 100px), var(--ty, 100px)) rotate(360deg);
        opacity: 0;
    }
}

.particle {
    position: absolute;
    pointer-events: none;
    width: 4px;
    height: 4px;
    background: #00f2ff;
    border-radius: 50%;
    animation: moveParticle 2s ease-out forwards;
}

/* Hover lift effect */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.hover-lift:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 242, 255, 0.15);
}

/* Line animation */
@keyframes lineGrow {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.line-animation {
    animation: lineGrow 0.8s ease-out;
}

/* Bounce animation */
@keyframes bounce360 {
    0%, 100% {
        transform: translateY(0);
    }
    25% {
        transform: translateY(-10px);
    }
    50% {
        transform: translateY(-20px);
    }
    75% {
        transform: translateY(-10px);
    }
}

.bounce-animation {
    animation: bounce360 1.5s ease-in-out infinite;
}

/* Typewriter effect */
@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.typewriter {
    overflow: hidden;
    border-right: 3px solid #00f2ff;
    animation: typewriter 4s steps(50, end) forwards;
    white-space: nowrap;
}

/* Card tilt animation */
.card-tilt {
    perspective: 1000px;
    transition: transform 0.3s ease-out;
}

.card-tilt:hover {
    transform: rotateX(5deg) rotateY(5deg);
}