/* --- DESIGN VARIABLES --- */
:root {
    --bg-main: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #161616;
    --bg-glass: rgba(22, 22, 22, 0.7);
    --border-color: #2a2a2a;
    --text-main: #ffffff;
    --text-muted: #888888;
    --text-accent: #e0e0e0;
    --accent: #ffffff;
    --accent-hover: #cccccc;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- RESET & BASIC SETUP --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Golos Text', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
}

.text-accent {
    color: var(--text-muted);
}

.text-muted {
    color: var(--text-muted);
}

.text-sm {
    font-size: 0.875rem;
}

.mb-2 { margin-bottom: 0.5rem; }
.mt-4 { margin-top: 1rem; }

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #222;
    border-color: #444;
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--accent);
    color: var(--bg-main);
}

/* --- HEADER --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.header.scrolled {
    padding: 8px 0;
    background-color: rgba(10, 10, 10, 0.85);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.header.scrolled .header-container {
    height: 64px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.1;
}

.logo-link:hover {
    color: var(--text-main);
}

.logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    object-fit: cover;
    flex: 0 0 auto;
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-main);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 32px;
    height: 24px;
    position: relative;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-main);
    position: absolute;
    left: 0;
    transition: var(--transition);
}

.mobile-menu-btn span:nth-child(1) { top: 0; }
.mobile-menu-btn span:nth-child(2) { top: 11px; }
.mobile-menu-btn span:nth-child(3) { top: 22px; }

.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg); top: 11px; }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg); top: 11px; }

/* --- HERO SECTION --- */
.hero {
    position: relative;
    padding: 180px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(30, 30, 30, 0.5) 0%, var(--bg-main) 60%);
    z-index: -1;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-visual {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image {
    max-width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 40px rgba(255, 255, 255, 0.05));
    animation: float 6s ease-in-out infinite;
}

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

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- COMMON SECTION STYLES --- */
section {
    padding: 100px 0;
}

.section-header {
    margin-bottom: 64px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
}

/* --- SERVICES --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.services-grid-two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.service-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 40px 32px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    min-height: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: #444;
    background-color: #1a1a1a;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
}

.service-icon {
    width: 64px;
    height: 64px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--text-main);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.service-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    height: 32px;
    margin-bottom: 20px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
}

.service-text {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.7;
}

/* --- IT ACTIVITIES MINCIFRA --- */
.activities {
    background-color: var(--bg-main);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.activities-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.activity-item {
    display: flex;
    gap: 24px;
    padding: 24px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.activity-item:hover {
    border-color: #444;
    background-color: var(--bg-tertiary);
}

.activity-code {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
    min-width: 60px;
}

.activity-name {
    font-size: 1.0625rem;
    color: var(--text-accent);
}

/* --- ABOUT --- */
.about-grid {
    max-width: 960px;
}

.about-text {
    font-size: 1.0625rem;
    color: var(--text-muted);
}

.about-text p {
    margin-bottom: 16px;
}

.about-text strong {
    color: var(--text-main);
}

/* --- REQUISITES --- */
.req-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.req-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius-md);
}

.req-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.req-list li {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
}

.req-list li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.req-list strong {
    color: var(--text-main);
    display: inline-block;
    min-width: 180px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.125rem;
    margin-bottom: 16px;
}

.contact-item a:hover {
    color: var(--text-muted);
}

/* --- FOOTER --- */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 80px 0 32px;
    background-color: var(--bg-main);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-desc {
    color: var(--text-muted);
    margin-top: 16px;
    max-width: 300px;
}

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

.footer-links a, .footer-contact p {
    color: var(--text-muted);
}

.footer-links a:hover, .footer-contact a:hover {
    color: var(--text-main);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* --- ANIMATIONS & UTILS --- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1), 
                transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

/* --- RESPONSIVE --- */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        margin-top: 40px;
    }

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

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

@media (max-width: 768px) {
    .nav {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-main);
        padding: 40px 24px;
    }
    
    .header.scrolled .nav {
        top: 64px;
        height: calc(100vh - 64px);
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 32px;
    }
    
    .nav-link {
        font-size: 1.5rem;
    }
    
    .header-actions .btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .activity-item {
        flex-direction: column;
        gap: 12px;
    }
    
    .req-list strong {
        display: block;
        margin-bottom: 4px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}