html {
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.6s ease;
}

html.loaded {
    visibility: visible;
    opacity: 1;
}

html {
    scroll-behavior: smooth;
}

html.dark {
    color-scheme: dark;
}

html:not(.dark) {
    color-scheme: light;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

.dark ::-webkit-scrollbar-track {
    background: #1f2937;
}

::-webkit-scrollbar-thumb {
    background: #9ca3af;
    border-radius: 9999px;
}

.dark ::-webkit-scrollbar-thumb {
    background: #4b5563;
}

::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

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

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);
        transform: translate3d(0,0,0);
    }
    40%, 43% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -8px, 0);
    }
    70% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -4px, 0);
    }
    90% {
        transform: translate3d(0,-1px,0);
    }
}

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

@keyframes profileGlow {
    0%, 100% {
        box-shadow: 0 0 30px rgba(59, 130, 246, 0.4), 0 0 60px rgba(59, 130, 246, 0.2);
    }
    50% {
        box-shadow: 0 0 40px rgba(139, 92, 246, 0.6), 0 0 80px rgba(139, 92, 246, 0.3);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
    }
    50% {
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.8);
    }
}

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

.animate-bounce-slow {
    animation: bounce 2s infinite;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animation-delay-200 {
    animation-delay: 0.2s;
}

.animation-delay-400 {
    animation-delay: 0.4s;
}

.animation-delay-600 {
    animation-delay: 0.6s;
}

.animation-delay-800 {
    animation-delay: 0.8s;
}

.animation-delay-1000 {
    animation-delay: 1s;
}

.animation-delay-1200 {
    animation-delay: 1.2s;
}

.animation-delay-1400 {
    animation-delay: 1.4s;
}

.hero-gradient {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #1e40af 100%);
}

.dark .hero-gradient {
    background: linear-gradient(135deg, #1f2937 0%, #111827 50%, #000000 100%);
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

@keyframes shapes-fade-in {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.shape {
    position: absolute;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 70%;
    animation-delay: 4s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 10%;
    right: 20%;
    animation-delay: 1s;
}

.shape-5 {
    width: 30px;
    height: 30px;
    top: 40%;
    left: 60%;
    animation-delay: 3s;
}

.profile-glow {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.4);
    animation: profileGlow 4s ease-in-out infinite;
}

@keyframes profileGlow {
    0%, 100% {
        box-shadow: 0 0 30px rgba(59, 130, 246, 0.4), 0 0 60px rgba(59, 130, 246, 0.2);
    }
    50% {
        box-shadow: 0 0 40px rgba(139, 92, 246, 0.6), 0 0 80px rgba(139, 92, 246, 0.3);
    }
}

.typing-cursor {
    position: relative;
    display: inline-block;
    min-height: 1.2em;
}

.typing-cursor::after {
    content: '|';
    position: absolute;
    right: -2px;
    animation: blink 1s infinite;
    color: inherit;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

.btn-hero-primary {
    position: relative;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
    overflow: hidden;
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.4);
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.social-link {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    margin-bottom: 12px;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: white;
    margin-bottom: 8px;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

.tech-badge {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.tech-badge:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
    text-decoration: none;
}

.scroll-arrow {
    width: 50px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.scroll-indicator:hover .scroll-arrow {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.1);
}

.scroll-text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.card-hover {
    transition: none;
}

.card-hover:hover {
    transform: none;
    box-shadow: none;
}

.dark .card-hover:hover {
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.nav-link {
    position: relative;
    overflow: hidden;
    color: rgba(75, 85, 99, 0.9);
    transition: color 0.3s ease;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-decoration: none;
}

.dark .nav-link {
    color: rgba(255, 255, 255, 0.9);
}

.nav-link:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    text-decoration: none;
}

.dark .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #93c5fd;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-nav-link {
    color: #374151;
    font-weight: 500;
    padding: 0.75rem 1rem;
    display: block;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.dark .mobile-nav-link {
    color: white;
}

.mobile-nav-link:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    text-decoration: none;
}

.dark .mobile-nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #93c5fd;
}

.skill-icon {
    transition: all 0.3s ease;
}

.skill-card:hover .skill-icon {
    transform: scale(1.1) rotate(5deg);
}

.skill-card {
    transform: translateY(0);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(59, 130, 246, 0.1);
}

.skill-icon {
    transform: scale(1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-card:hover .skill-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.4);
}

.progress-bar {
    width: 0%;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progress-shine 2s infinite;
}

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

.skill-card:nth-child(1) { animation-delay: 0.1s; }
.skill-card:nth-child(2) { animation-delay: 0.2s; }
.skill-card:nth-child(3) { animation-delay: 0.3s; }
.skill-card:nth-child(4) { animation-delay: 0.4s; }
.skill-card:nth-child(5) { animation-delay: 0.5s; }
.skill-card:nth-child(6) { animation-delay: 0.6s; }
.skill-card:nth-child(7) { animation-delay: 0.7s; }
.skill-card:nth-child(8) { animation-delay: 0.8s; }
.skill-card:nth-child(9) { animation-delay: 0.9s; }
.skill-card:nth-child(10) { animation-delay: 1.0s; }

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 1rem;
    z-index: 1;
}

.skill-card:hover::before {
    opacity: 1;
}

.skill-level-badge {
    background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    color: #374151;
    transition: all 0.3s ease;
}

.dark .skill-level-badge {
    background: linear-gradient(135deg, #374151, #4b5563);
    color: #f3f4f6;
}

.skill-card:hover .skill-level-badge {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    transform: scale(1.05);
}

.project-card {
    overflow: hidden;
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.project-card:hover::before {
    left: 100%;
}

.project-card-enhanced {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.project-card-enhanced:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.project-card-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s;
    z-index: 1;
}

.project-card-enhanced:hover::before {
    left: 100%;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
    line-clamp: 3;
}

input:focus,
textarea:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #667eea, transparent);
    margin: 2rem 0;
}

@media (max-width: 768px) {
    .card-hover:hover {
        transform: none;
    }

    .btn-primary:hover,
    .btn-secondary:hover {
        transform: none;
    }

    .parallax {
        background-attachment: scroll;
    }

    .feature-card {
        padding: 1rem;
    }

    .hero-content,
    .hero-stats {
        animation-delay: 0s;
    }

    .project-card-enhanced:hover {
        transform: none;
    }
}

@media print {
    .no-print {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.4;
    }

    .gradient-bg {
        background: #f8f9fa !important;
        color: #333 !important;
    }
}

.feature-card {
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.dark .feature-card {
    background: #1f2937;
    border-color: #374151;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    font-size: 1.25rem;
}

.dark .feature-icon {
    background: rgba(59, 130, 246, 0.2);
}

.breadcrumb {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-active {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

@keyframes hero-fade-in {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: hero-fade-in 0.8s ease-out;
}

.hero-stats {
    animation: hero-fade-in 0.8s ease-out 0.3s both;
}

.btn-detail {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.25);
}

.btn-detail:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.4);
    color: white;
    text-decoration: none;
}

.hero-content {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

html.loaded .hero-content {
    opacity: 1;
    transform: translateY(0);
}

#projects, #skills, #about, #contact {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

html.loaded #projects,
html.loaded #skills,
html.loaded #about,
html.loaded #contact {
    opacity: 1;
    transform: translateY(0);
}

.project-detail-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

html.loaded .project-detail-content {
    opacity: 1;
    transform: translateY(0);
}