:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1E40AF;
    --color-secondary: #64748B;
    --color-bg: #FFFFFF;
    --color-surface: #F8FAFC;
    --color-text: #1E293B;
    --color-text-muted: #475569;
    --color-border: #E2E8F0;
    --font-family: "Inter", sans-serif;
    --spacing-xs: .5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --container-width: 1200px;
    --nav-height: 80px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);
    --radius: 12px
}

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

html {
    scroll-behavior: smooth
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6
}

h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm)
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem)
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem)
}

h3 {
    font-size: 1.5rem
}

p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1rem
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md)
}

.section {
    padding: var(--spacing-xl) 0
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translate(-50%)
}

.section-title:after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translate(-50%);
    width: 60px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 2px
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all .3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md)
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary)
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md)
}

.card {
    background: #fff;
    border-radius: var(--radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform .3s ease, box-shadow .3s ease
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg)
}

#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fffffff2;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    height: var(--nav-height)
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md)
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -.5px
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    transition: color .3s;
    font-size: .95rem
}

.nav-menu a:hover {
    color: var(--color-primary)
}

.mobile-phone-btn {
    display: none;
    align-items: center;
    background-color: var(--color-primary);
    color: #fff;
    padding: .5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: .9rem;
    box-shadow: var(--shadow-sm);
    transition: background-color .3s
}

.mobile-phone-btn:hover {
    background-color: var(--color-primary-dark)
}

#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f8fafc, #e0e7ff);
    padding-top: var(--nav-height);
    overflow: hidden
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, .1);
    color: #94a3b8;
    font-size: .9rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center
}

.hero-content h1 {
    margin-bottom: var(--spacing-md);
    color: #0f172a
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: #475569
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform .5s ease
}

.hero-image:hover img {
    transform: perspective(1000px) rotateY(0)
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center
}

.about-image img {
    border-radius: var(--radius);
    box-shadow: var(--shadow-md)
}

.check-list {
    list-style: none;
    margin-top: var(--spacing-md)
}

.check-list li {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: .75rem;
    font-weight: 500
}

.check-list li:before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    font-size: .8rem
}

#services {
    background: var(--color-surface)
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md)
}

.service-card {
    height: 100%;
    display: flex;
    flex-direction: column
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary)
}

.service-card h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm)
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg)
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md)
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: #eff6ff;
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto var(--spacing-sm)
}

#contact {
    background: #fff
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl)
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius)
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color .3s
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px #2563eb1a
}

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

#main-footer {
    background: #0f172a;
    color: #fff;
    padding: var(--spacing-xl) 0 var(--spacing-md)
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg)
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, .1);
    color: #94a3b8;
    font-size: .9rem
}

@media (max-width: 968px) {

    .hero-grid,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md)
    }

    .hero-image {
        order: -1;
        margin-bottom: var(--spacing-md)
    }

    .hero-content {
        text-align: center;
        padding: 0 var(--spacing-sm)
    }

    .hero-content .btn {
        width: 100%;
        margin-bottom: .5rem;
        justify-content: center
    }

    .hero-content>div {
        flex-direction: column;
        align-items: center
    }

    .section-title {
        left: 0;
        transform: none;
        text-align: center;
        margin-bottom: var(--spacing-md)
    }

    .section-title:after {
        left: 50%;
        transform: translate(-50%)
    }

    .about-content {
        text-align: center
    }

    .check-list {
        display: inline-block;
        text-align: left
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2.5rem;
        --spacing-xl: 3rem;
        --nav-height: 70px
    }

    .container {
        padding: 0 1.25rem
    }

    .nav-menu {
        display: none
    }

    .mobile-phone-btn {
        display: flex;
        padding: .4rem .8rem;
        font-size: .85rem
    }

    .nav-logo {
        font-size: 1.2rem
    }

    h1 {
        font-size: 2rem;
        margin-bottom: 1rem
    }

    h2 {
        font-size: 1.75rem
    }

    p {
        font-size: 1rem
    }

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

    .contact-form {
        padding: 1.25rem
    }

    .footer-content {
        text-align: center;
        gap: 2rem
    }

    .footer-content ul {
        align-items: center
    }
}