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

:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-light: #f5f5f5;
    --color-gray-medium: #e0e0e0;
    --color-gray-dark: #333333;
    --color-gray-text: #666666;
    --font-primary: 'Poppins', sans-serif;
    --transition-smooth: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-gray-dark);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.navbar {
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: 1px;
}

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

.nav-link {
    text-decoration: none;
    color: var(--color-gray-dark);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    transition: var(--transition-smooth);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--color-black);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-smooth);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.hero {
    padding: 180px 0 120px;
    background-image: url('assets/images/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--color-gray-light);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.85);
    z-index: 1;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-gray-text);
    margin-bottom: 40px;
    font-weight: 300;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    padding: 16px 40px;
    background-color: var(--color-black);
    color: var(--color-white);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    border-radius: 4px;
    transition: var(--transition-smooth);
    border: 2px solid var(--color-black);
}

.cta-button:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.services {
    padding: 100px 0;
    background-color: var(--color-white);
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--color-black);
    text-align: center;
    margin-bottom: 60px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.service-card {
    display: block;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    padding: 40px;
    background-color: var(--color-gray-light);
    border-radius: 8px;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-black);
}

.service-icon {
    margin-bottom: 20px;
    color: var(--color-black);
}

.service-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 12px;
}

.service-description {
    font-size: 15px;
    color: var(--color-gray-text);
    line-height: 1.7;
}

.reviews {
    padding: 100px 0;
    background-color: var(--color-gray-light);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.review-card {
    padding: 40px;
    background-color: var(--color-white);
    border-radius: 8px;
    border: 1px solid var(--color-gray-medium);
    transition: var(--transition-smooth);
}

.review-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-black);
}

.review-stars {
    font-size: 20px;
    color: var(--color-black);
    margin-bottom: 20px;
}

.review-text {
    font-size: 16px;
    color: var(--color-gray-text);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.review-author {
    border-top: 1px solid var(--color-gray-medium);
    padding-top: 20px;
}

.author-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 4px;
}

.author-company {
    font-size: 14px;
    color: var(--color-gray-text);
}

.about {
    padding: 100px 0;
    background-color: var(--color-white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 18px;
    color: var(--color-gray-text);
    text-align: center;
    line-height: 1.8;
    margin-bottom: 60px;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.highlight-item {
    text-align: center;
    padding: 30px;
}

.highlight-icon {
    margin-bottom: 20px;
    color: var(--color-black);
    display: flex;
    justify-content: center;
}

.highlight-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 12px;
}

.highlight-text {
    font-size: 15px;
    color: var(--color-gray-text);
    line-height: 1.6;
}

.contact {
    padding: 100px 0;
    background-color: var(--color-gray-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid var(--color-gray-medium);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 15px;
    transition: var(--transition-smooth);
    background-color: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-black);
}

.submit-button {
    padding: 16px 40px;
    background-color: var(--color-black);
    color: var(--color-white);
    border: 2px solid var(--color-black);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.submit-button:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.social-links {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.social-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 30px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 30px;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-gray-dark);
}

.contact-info-item svg {
    flex-shrink: 0;
    color: var(--color-black);
}

.contact-info-item span {
    font-size: 15px;
    line-height: 1.6;
}

.social-icons {
    display: flex;
    gap: 20px;
}

.social-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-black);
    border-radius: 50%;
    color: var(--color-black);
    transition: var(--transition-smooth);
}

.social-icon:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

.footer {
    padding: 40px 0;
    background-color: var(--color-black);
    text-align: center;
}

.footer-text {
    color: var(--color-white);
    font-size: 14px;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: var(--color-white);
        padding: 40px;
        gap: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

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

    .hero {
        padding: 140px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 32px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 20px;
    }

    .logo-img {
        width: 32px;
        height: 32px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .cta-button {
        padding: 14px 32px;
        font-size: 15px;
    }
}