:root {
    --color-primary: #1a1a2e;
    --color-accent: #4A9FF5;
    --color-secondary: #666;
    --color-text-primary: #333;
    --color-text-secondary: #aaa;
    --color-text-inverse: white;
    --color-bg-primary: white;
    --color-bg-secondary: #f5f5f5;
    --color-bg-body: #fafafa;
    --color-bg-dark: #1a1a2e;
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;
    --container-padding: 40px;
    --container-padding-mobile: 16px;
    --section-padding: 80px;
    --section-padding-mobile: 48px;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    color: var(--color-text-primary);
    line-height: 1.6;
    background: var(--color-bg-body);
    font-size: 16px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

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

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

header {
    background: var(--color-bg-primary);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-primary);
    text-decoration: none;
}

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

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

.nav-links a {
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--color-accent);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

.menu-icon {
    font-size: 28px;
    color: var(--color-text-primary);
}

#hero {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: var(--color-text-inverse);
    text-align: center;
    padding: 120px 0;
}

/* #hero::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 50px;
    right: 50px;
    bottom: 50px;
    background-image: url('../img/hero.png');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.5;
    z-index: 0;
} */

#hero .container {
    position: relative;
    z-index: 1;
}

#hero h1 {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.hero-tagline {
    font-size: 1.2rem;
    font-weight: 300;
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.btn {
    display: inline-block;
    padding: 16px 40px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    background: var(--color-bg-primary);
    color: var(--color-primary);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    min-height: 44px;
    line-height: 1.2;
}

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

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

.btn-dark {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border: 2px solid var(--color-primary);
}

.btn-dark:hover {
    background: transparent;
    color: var(--color-primary);
}

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

.btn-light:hover {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

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

.btn-white:hover {
    background: transparent;
    color: var(--color-text-inverse);
    border: 2px solid var(--color-bg-primary);
}

.btn-minimal {
    background: transparent;
    color: var(--color-text-primary);
    border: none;
    padding: 16px 20px;
}

.btn-minimal:hover {
    color: var(--color-accent);
}

.btn-minimal-light {
    background: transparent;
    color: var(--color-text-inverse);
    border: none;
    padding: 16px 20px;
}

.btn-minimal-light:hover {
    color: var(--color-accent);
}

section {
    padding: var(--section-padding) 0;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    color: var(--color-primary);
}

.buttons-showcase {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
    justify-content: center;
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--color-accent);
    color: var(--color-text-inverse);
    border-radius: 50%;
}

.step h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.step p {
    font-size: 1rem;
    font-weight: 300;
    color: var(--color-secondary);
    line-height: 1.7;
}

.service-card {
    padding: 50px 40px;
    text-align: center;
}

.service-icon {
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 48px;
    height: 48px;
    filter: invert(56%) sepia(89%) saturate(612%) hue-rotate(178deg) brightness(99%) contrast(93%);
}

.service-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.service-card p {
    font-size: 1rem;
    font-weight: 300;
    color: var(--color-secondary);
    line-height: 1.7;
}

footer {
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 80px;
    margin-bottom: 50px;
}

.footer-left {
    flex: 1;
}

.footer-right {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    color: var(--color-text-inverse);
}

address {
    font-style: normal;
    font-weight: 300;
}

address p {
    margin-bottom: 8px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

address a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

address a:hover {
    color: var(--color-text-inverse);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 300;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--color-text-inverse);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-text-inverse);
    margin-bottom: 40px;
}

.footer-bottom p {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-text-secondary);
}

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

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-centered {
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    :root {
        --container-padding: 24px;
    }

    h2 {
        font-size: 2.2rem;
        margin-bottom: 48px;
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: var(--container-padding-mobile);
        --section-padding: var(--section-padding-mobile);
    }

    .menu-toggle {
        display: flex;
    }

    nav {
        flex-wrap: wrap;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100vw;
        max-height: 0;
        overflow: hidden;
        background: var(--color-bg-primary);
        flex-direction: column;
        gap: 0;
        box-shadow: 0 8px 16px rgba(0,0,0,0.1);
        transition: max-height 0.3s ease;
    }

    .nav-links.active {
        max-height: 400px;
    }

    .nav-links li {
        width: 100%;
        border-bottom: 1px solid var(--color-border-light);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: block;
        padding: 16px var(--container-padding-mobile);
        font-size: 1rem;
        min-height: 48px;
    }

    #hero {
        padding: 80px 0;
    }

    #hero h1 {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1rem;
        margin-bottom: 32px;
    }

    h2 {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .service-card {
        padding: 32px 24px;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
        margin-bottom: 40px;
    }

    .footer-right {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .btn {
        padding: 14px 32px;
    }
}

@media (max-width: 480px) {
    #hero h1 {
        font-size: 2rem;
        letter-spacing: 0.05em;
    }

    .hero-tagline {
        font-size: 0.95rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .step h3,
    .service-card h3 {
        font-size: 1.2rem;
    }

    .service-card {
        padding: 28px 20px;
    }

    .footer-brand {
        font-size: 1.3rem;
    }
}