/* ============================================
   TECSUL ELETRONICA - ESTILOS PRINCIPAIS
   ============================================ */

/* Reset e Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #ef233c;
    --primary-dark: #c1121f;
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-secondary: #1a1f26;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --accent-red: #ef233c;
    --success: #22c55e;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

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

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 0.95rem;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

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

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 188, 212, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(220, 38, 38, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero h1 .highlight {
    color: var(--primary);
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.hero-logo-container {
    position: relative;
    width: 350px;
    height: 350px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo {
    width: 280px;
    height: auto;
    filter: drop-shadow(0 0 60px rgba(220, 38, 38, 0.3));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.glow-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid rgba(0, 188, 212, 0.2);
    border-radius: 50%;
    animation: glow-pulse 3s ease-in-out infinite;
}

.glow-ring:nth-child(2) {
    width: 120%;
    height: 120%;
    animation-delay: 0.5s;
}

.glow-ring:nth-child(3) {
    width: 140%;
    height: 140%;
    animation-delay: 1s;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.02); }
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 188, 212, 0.1);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: 100px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 24px;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.about-features {
    display: grid;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary);
    font-size: 1.25rem;
}

.feature-item h4 {
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.about-image {
    position: relative;
}

.about-logo {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 0 40px rgba(220, 38, 38, 0.2));
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-items {
    display: grid;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary);
    font-size: 1.25rem;
}

.contact-item h4 {
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

.contact-form-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

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

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    font-size: 1rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 300px;
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color 0.3s;
}

.footer-section ul a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.social-links a:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto 32px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-logo-container {
        width: 280px;
        height: 280px;
    }

    .hero-logo {
        width: 220px;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .header .btn-primary {
        display: none;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .stat-item {
        text-align: center;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

/* Alert Messages */
.alert {
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
}