@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #fafafa;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --accent-dim: rgba(0, 113, 227, 0.1);
    --gradient-start: #0071e3;
    --gradient-end: #147ce4;
    --border: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.2);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection {
    background: var(--accent);
    color: white;
}

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

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

::-webkit-scrollbar-thumb {
    background: #d2d2d7;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

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

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 113, 227, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 113, 227, 0.6); }
}

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

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

nav.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    transition: color var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0;
    animation: slideIn 0.5s ease forwards;
}

.mobile-menu a:nth-child(1) { animation-delay: 0.1s; }
.mobile-menu a:nth-child(2) { animation-delay: 0.2s; }
.mobile-menu a:nth-child(3) { animation-delay: 0.3s; }
.mobile-menu a:nth-child(4) { animation-delay: 0.4s; }
.mobile-menu a:nth-child(5) { animation-delay: 0.5s; }

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 100px 24px 60px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 113, 227, 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 113, 227, 0.08), transparent);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 113, 227, 0.15) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 113, 227, 0.15) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.hero-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    height: 100%;
}

.hero-right {
    text-align: left;
}

.hero-logo {
    animation: fadeInUp 0.8s ease backwards;
    width: 100%;
    display: flex;
    justify-content: center;
}

.hero-logo .logo-main {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 20px rgba(0, 113, 227, 0.15));
    transition: transform 0.4s ease, filter 0.4s ease;
}

.hero-logo .logo-main:hover {
    transform: scale(1.03);
    filter: drop-shadow(0 8px 30px rgba(0, 113, 227, 0.25));
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--accent-dim);
    border: 1px solid rgba(0, 113, 227, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-badge svg {
    width: 14px;
    height: 14px;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease 0.1s backwards;
}

.hero h1 span {
    display: block;
}

.hero p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 20px rgba(0, 113, 227, 0.3);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-indicator span {
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator svg {
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator svg {
    width: 20px;
    height: 20px;
}

.section {
    padding: 80px 0;
    position: relative;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 20px;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 60px rgba(0, 113, 227, 0.1);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-dim);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--accent);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--accent);
    transition: var(--transition);
}

.service-card:hover .service-icon svg {
    stroke: white;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.technologies {
    overflow: hidden;
    padding: 80px 0;
}

.tech-category {
    margin-bottom: 32px;
}

.tech-category:last-child {
    margin-bottom: 0;
}

.tech-category h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 24px;
    text-align: center;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.tech-badge:hover {
    background: var(--accent-dim);
    border-color: rgba(0, 113, 227, 0.3);
    transform: translateY(-2px);
}

.tech-badge svg {
    width: 20px;
    height: 20px;
    stroke: var(--accent);
}

.about-header-visual {
    position: relative;
    border-radius: 32px;
    overflow: hidden;
    margin-bottom: 60px;
    padding: 80px 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    display: flex;
    justify-content: center;
    text-align: center;
}

.about-header-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.about-header-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.15;
}

.about-header-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) brightness(0.8);
}

.about-header-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent, var(--bg-tertiary) 90%);
}

.about-flex-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-col p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

@media (max-width: 992px) {
    .about-flex-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .about-header-visual {
        padding: 60px 20px;
    }
}

.about-visual {
    position: relative;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-radius: 32px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-height: 400px;
}

.about-visual svg {
    width: 60%;
    height: auto;
    max-width: 280px;
    stroke: var(--accent);
    opacity: 0.5;
    position: relative;
    z-index: 1;
}

.about-image {
    width: 80%;
    height: auto;
    max-width: 400px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
}

.about-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 30%, rgba(0, 113, 227, 0.15), transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(0, 113, 227, 0.1), transparent 50%);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    border: 1px solid var(--border);
}

.about-feature svg {
    width: 20px;
    height: 20px;
    stroke: var(--accent);
    flex-shrink: 0;
}

.about-feature span {
    font-weight: 500;
    font-size: 0.95rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-info > p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-dim);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent);
}

.contact-item-text {
    display: flex;
    flex-direction: column;
}

.contact-item-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.contact-item-value {
    font-weight: 500;
}

.contact-form {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #ff4444;
    animation: shake 0.3s ease;
}

.form-error {
    color: #ff4444;
    font-size: 0.85rem;
    margin-top: 8px;
    display: none;
}

.form-group.error .form-error {
    display: block;
}

.form-success {
    display: none;
    padding: 24px;
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    border-radius: 12px;
    text-align: center;
    animation: scaleIn 0.5s ease;
}

.form-success.active {
    display: block;
}

.form-success svg {
    width: 48px;
    height: 48px;
    stroke: var(--accent);
    margin-bottom: 16px;
}

.form-success h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.form-success p {
    color: var(--text-secondary);
}

.form-submit {
    width: 100%;
    position: relative;
}

.form-submit .btn {
    width: 100%;
    justify-content: center;
}

.form-submit .btn.loading {
    color: transparent;
}

.form-submit .btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

footer {
    background: var(--bg-secondary);
    padding: 80px 0 40px;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.footer-social a:hover svg {
    stroke: white;
}

.footer-social svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-secondary);
    transition: var(--transition);
}

.footer-social-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 16px;
    font-style: italic;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-left {
        align-items: center;
    }
    
    .hero-right {
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .hero-logo .logo-main {
        height: 80px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .scroll-indicator {
        left: 50%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 100px 16px 60px;
    }
    
    .service-card {
        padding: 32px 24px;
    }
    
    .contact-form {
        padding: 32px 24px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}