:root {
    --bg-primary: #151515;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #202020;
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A0;
    --accent-cyan: #00D4FF;
    --accent-purple: #7B61FF;
    --accent-coral: #FF6B6B;
    --border-color: #2A2A2A;
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Space Grotesk', sans-serif;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

ul {
    list-style: none;
}

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

.accent {
    color: var(--accent-cyan);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.btn-primary:hover {
    background-color: #00b8e0;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.btn-full {
    width: 100%;
}

.section-header {
    margin-bottom: 48px;
}

.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 40px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(21, 21, 21, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
}

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

.logo {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 700;
    display: flex;
}

.logo-80 {
    color: var(--accent-cyan);
}

.logo-pertech {
    color: var(--text-primary);
}

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

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

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

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

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

.header-cta {
    padding: 10px 20px;
    font-size: 12px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(123, 97, 255, 0.06) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 80%, rgba(255, 107, 107, 0.04) 0%, transparent 40%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: 72px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-title-line {
    display: block;
}

.hero-title-line.accent {
    color: var(--accent-cyan);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 480px;
}

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

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

.code-block {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    width: 100%;
    max-width: 480px;
    font-family: 'Consolas', 'Monaco', monospace;
}

.code-header {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot:nth-child(1) {
    background-color: #FF6B6B;
}

.code-dot:nth-child(2) {
    background-color: #FFD93D;
}

.code-dot:nth-child(3) {
    background-color: #6BCB77;
}

.code-content {
    font-size: 13px;
    line-height: 1.8;
    color: var(--text-secondary);
    overflow-x: auto;
}

.code-keyword {
    color: var(--accent-purple);
}

.code-var {
    color: var(--accent-cyan);
}

.code-func {
    color: #FFD93D;
}

.code-prop {
    color: var(--accent-coral);
}

.code-string {
    color: #6BCB77;
}

.code-comment {
    color: #666;
    font-style: italic;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.scroll-indicator span {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-cyan), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 1;
        height: 40px;
    }
    50% {
        opacity: 0.3;
        height: 60px;
    }
}

/* Serviços */
.servicos {
    padding: 120px 0;
    background-color: var(--bg-secondary);
}

.servicos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.servico-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 40px 32px;
    transition: var(--transition);
}

.servico-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-4px);
}

.servico-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 212, 255, 0.1);
    border-radius: 8px;
    margin-bottom: 24px;
    color: var(--accent-cyan);
}

.servico-title {
    font-family: var(--font-secondary);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.servico-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Portfolio */
.portfolio {
    padding: 120px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.portfolio-item {
    cursor: pointer;
}

.portfolio-image {
    aspect-ratio: 4/3;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 16px;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-image {
    border-color: var(--accent-cyan);
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-secondary);
    font-size: 14px;
}

.portfolio-info {
    padding: 0 4px;
}

.portfolio-title {
    font-family: var(--font-secondary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.portfolio-type {
    font-size: 14px;
    color: var(--text-secondary);
}

.portfolio-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* Sobre */
.sobre {
    padding: 120px 0;
    background-color: var(--bg-secondary);
}

.sobre-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.sobre-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.sobre-list {
    margin-top: 24px;
}

.sobre-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.sobre-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 2px;
}

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

.stat-item {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 32px;
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-secondary);
    font-size: 40px;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Contato */
.contato {
    padding: 120px 0;
}

.contato-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contato-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 24px 0 32px;
    line-height: 1.7;
}

.contato-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contato-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 15px;
}

.contato-item svg {
    color: var(--accent-cyan);
}

.contato-item:hover {
    color: var(--accent-cyan);
}

.contato-form {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 40px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 15px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    padding: 64px 0 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand {
    max-width: 280px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 16px;
}

.footer-links {
    display: flex;
    gap: 64px;
}

.footer-title {
    font-family: var(--font-secondary);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

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

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

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

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-secondary);
}

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

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-visual {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.servico-card {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.servico-card:nth-child(1) { animation-delay: 0.1s; }
.servico-card:nth-child(2) { animation-delay: 0.2s; }
.servico-card:nth-child(3) { animation-delay: 0.3s; }

/* Responsive */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 56px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .servicos-grid,
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sobre-grid,
    .contato-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .nav,
    .header-cta {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        margin: 0 auto 32px;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .servicos-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}