* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Hide scrollbar but keep functionality */
::-webkit-scrollbar {
    width: 0px;
    background: transparent;
}

html {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

:root {
    --primary-color: #0a0a0a;
    --secondary-color: #1a1a1a;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --text-color: #0f0f0f;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-alt: #f8fafc;
    --border-color: #e5e7eb;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    --gradient-accent: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --navbar-bg: rgba(255, 255, 255, 0.98);
    --hero-bg: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
    --button-shine: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    --input-focus-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    --body-bg-1: radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.04) 0%, transparent 50%);
    --body-bg-2: radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.03) 0%, transparent 50%);
    --danger-color: #dc3545;
    --danger-hover: #c82333;
    --footer-border: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    --footer-text: #0a0a0a;
    --footer-gradient: linear-gradient(135deg, #f8fafc 0%, #e5e7eb 100%);
}

[data-theme="dark"] {
    --primary-color: #f5f5f5;
    --secondary-color: #e5e5e5;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --text-color: #f5f5f5;
    --text-light: #9ca3af;
    --bg-color: #0a0a0a;
    --bg-alt: #111111;
    --border-color: #2a2a2a;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.6);
    --gradient-primary: linear-gradient(135deg, #f5f5f5 0%, #e5e5e5 100%);
    --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    --navbar-bg: rgba(10, 10, 10, 0.98);
    --hero-bg: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    --button-shine: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    --input-focus-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
    --body-bg-1: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.06) 0%, transparent 50%);
    --body-bg-2: radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --footer-border: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    --footer-text: white;
    --footer-gradient: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    background-image: 
        var(--body-bg-1),
        var(--body-bg-2);
    background-attachment: fixed;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeOut 0.6s ease-out 1.2s forwards;
}

.loading-screen.hidden {
    display: none;
}

.loader {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

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

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease, transform 0.2s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

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

.theme-toggle {
    background: #ffffff;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
}

[data-theme="dark"] .theme-toggle {
    background: #0a0a0a;
    border-color: #2a2a2a;
}

.theme-toggle:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: var(--text-color);
    transition: fill 0.3s ease;
}

.theme-toggle:hover svg {
    fill: var(--accent-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-alt) 0%, var(--bg-color) 100%);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

/* Portfolio Section */
.portfolio {
    padding: 6rem 2rem;
    background: var(--bg-color);
}

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

.portfolio-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    color: var(--text-color);
    box-shadow: var(--shadow);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.portfolio-image {
    height: 250px;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-image svg {
    width: 64px;
    height: 64px;
    stroke: var(--accent-color);
}

.portfolio-content {
    padding: 1.5rem;
}

.portfolio-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.portfolio-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 40%;
    height: 40%;
    background: var(--accent-color);
    opacity: 0.03;
    border-radius: 50%;
    filter: blur(80px);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: var(--hero-bg);
    animation: float 20s ease-in-out infinite;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease-out;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.35rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    padding: 1.1rem 3rem;
    background: var(--gradient-accent);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--button-shine);
    transition: left 0.6s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.cta-button:active {
    transform: translateY(-2px);
}

/* Services Section */
.services {
    padding: 7rem 2rem;
    background: var(--bg-alt);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.services h2 {
    text-align: center;
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--bg-color);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.7s ease-out forwards;
}

.service-card:nth-child(1) { 
    animation-delay: 0.1s;
    border-radius: 18px 14px 16px 18px;
}
.service-card:nth-child(2) { 
    animation-delay: 0.2s;
    border-radius: 14px 18px 18px 14px;
}
.service-card:nth-child(3) { 
    animation-delay: 0.3s;
    border-radius: 16px 16px 14px 18px;
}
.service-card:nth-child(4) { 
    animation-delay: 0.4s;
    border-radius: 18px 16px 14px 16px;
}

.service-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-16px) scale(1.03);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: 16px;
    color: white;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover .service-icon svg {
    transform: scale(1.15) rotate(5deg);
}

.service-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.service-card p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 7rem 2rem;
    background: var(--bg-color);
}

.about h2 {
    text-align: center;
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about p {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
    font-size: 1.15rem;
    color: var(--text-light);
    line-height: 1.9;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 5rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat:hover {
    transform: translateY(-8px);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat:hover .stat-number {
    transform: scale(1.1);
}

.stat-label {
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
}

/* Contact Section */
.contact {
    padding: 7rem 2rem;
    background: var(--bg-alt);
}

.contact h2 {
    text-align: center;
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-color);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-color);
    color: var(--text-color);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: var(--input-focus-shadow);
    transform: translateY(-3px);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--accent-color);
}

.submit-button {
    width: 100%;
    padding: 1.15rem;
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--button-shine);
    transition: left 0.6s ease;
}

.submit-button:hover::before {
    left: 100%;
}

.submit-button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.submit-button:active {
    transform: translateY(-2px);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    33% {
        transform: translateY(-15px) rotate(2deg);
    }
    66% {
        transform: translateY(-8px) rotate(-3deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* Scroll-triggered animations */
.fade-in-section {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.9s cubic-bezier(0.4, 0, 0.2, 1), transform 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
.footer {
    background: #f8fafc;
    color: #0a0a0a;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .footer {
    background: #0a0a0a;
    color: #ffffff;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

[data-theme="dark"] .footer::before {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.footer .container {
    padding: 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section p {
    margin-bottom: 0.5rem;
    opacity: 0.85;
    line-height: 1.6;
}

.footer-section a {
    color: inherit;
    text-decoration: none;
    opacity: 0.85;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    opacity: 0.7;
    font-size: 0.9rem;
}

[data-theme="dark"] .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1.5rem;
        font-size: 0.9rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .services h2,
    .about h2,
    .contact h2 {
        font-size: 2rem;
    }

    .stats {
        gap: 2.5rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .contact-form {
        padding: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}