:root {
    --bg-dark: #222222;
    --text-light: #f4f4f4;
    --jarvs-blue: #007bff;
    --jarvs-orange: #ff8c00;
    --card-bg: #333333;
    --border-color: #444444;
}

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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}


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

ul { list-style: none; }


.btn {
    display: inline-block;
    background: linear-gradient(to right, var(--jarvs-blue), var(--jarvs-orange));
    color: var(--text-light);
    padding: 10px 20px;
    border-radius: 5px;
    transition: transform 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover { 
  transform: scale(1.05); }


.header {
    background-color: var(--bg-dark);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 60px;
    gap: 20px;
}

.header .logo h1 {
    font-size: 2.2em;
    color: var(--jarvs-blue);
    display: inline-block;
}

.header .logo h1 .ia-highlight { color: var(--jarvs-orange); }

.header .logo p {
    font-size: 0.8em;
    color: #b0b0b0;
    letter-spacing: 1px;
    margin-top: -5px;
}


.nav-menu ul {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-menu ul li { margin-left: 0; }

.nav-menu ul li a {
    font-weight: bold;
    color: #ccc;
    transition: color 0.3s ease;
    padding: 6px 8px;
}

.nav-menu ul li a:hover { color: var(--jarvs-orange); }


.hero {
    min-height: 60vh;
    display: flex;
    text-align: center;
    position: relative;
    box-shadow: inset 0 0 0 1000px rgba(0,0,0,0.5);
    padding: 0;
}

.hero img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    opacity: 0.7;
}

.hero-content {
    z-index: 2;
    max-width: 900px;
    margin-bottom: 10px;
}

.hero-content h2 {
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    margin-bottom: 20px;
    line-height: 1.2;
}


.about-us {
    padding: 80px 0;
    background-color: var(--bg-dark);
}

.about-us .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.about-text { flex: 1; }

.about-text h3 {
    font-size: 2em;
    margin-bottom: 20px;
    color: var(--jarvs-blue);
}

.about-text p {
    font-size: 1.1em;
    line-height: 1.8;
    color: #d0d0d0;
}

.about-slogan {
    flex: 1;
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.about-slogan h4 {
    font-size: 1.2rem;
    color: var(--jarvs-orange);
    line-height: 1.4;
    text-transform: uppercase;
}


.services {
    padding: 80px 0;
    background-color: #2a2a2a;
}

.services h3 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    color: var(--jarvs-blue);
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}


.service-cards .card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
    color: inherit;
    display: block; 
}

.service-cards .card:hover {
   transform: translateY(-10px);
 }

.service-cards .card i {
    font-size: 3em;
    color: var(--jarvs-orange);
    margin-bottom: 20px;
}

.service-cards .card h4 {
    font-size: 1.5em;
    margin-bottom: 15px;
    color: var(--jarvs-blue);
}

.service-cards .card p {
    font-size: 1em;
    color: #c0c0c0;
}


.contact {
    padding: 80px 0;
    background-color: var(--bg-dark);
}

.contact h3 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    color: var(--jarvs-blue);
}

.contact-content {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    background-color: #3a3a3a;
    border: 1px solid var(--border-color);
    padding: 12px 15px;
    border-radius: 5px;
    color: var(--text-light);
    font-size: 1em;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #a0a0a0; }

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

.contact-info {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
    font-size: 1.1em;
    color: #c0c0c0;
}

.social-links {
    margin-top: 20px;
    display: flex;
    gap: 20px;
   /*justify-content: center;*/
}

.social-links a {
    color: var(--jarvs-orange);
    font-size: 1.8em;
    transition: color 0.3s ease;
}

.social-links a:hover { color: var(--jarvs-blue); }


.footer {
    background-color: #1a1a1a;
    color: #ccc;
    padding: 40px 0;
    font-size: 0.9em;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo h1 {
    font-size: 2em;
    color: var(--jarvs-blue);
    display: inline-block;
}

.footer-logo h1 .ia-highlight { color: var(--jarvs-orange); }

.footer-logo p {
    font-size: 0.7em;
    color: #b0b0b0;
    letter-spacing: 1px;
    margin-top: -5px;
}

.footer .copyright { margin: 0; }

.footer-links a {
    color: #ccc;
    margin-left: 20px;
    transition: color 0.3s ease;
}

.footer-links a:hover { color: var(--jarvs-orange); }


.fixed-bottom-bar {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  z-index: 999;
  transition: transform 0.2s ease-in-out;
}

.fixed-bottom-bar img {
  width: 32px;
  height: 32px;
}

.fixed-bottom-bar:hover { 
    transform: scale(1.1); 
}


.fixed-top-btn {
    position: fixed;
    bottom: 88px;
    right: 20px;
    z-index: 999;
}

.fixed-top-btn a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.6);
    padding: 10px;
    border-radius: 50%;
    color: var(--text-light);
    text-decoration: none;
}


#home {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
}

/* Responsividade - Tablets (<=1024px) */
@media (max-width: 1024px) {
    .header .container {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .nav-menu ul {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    .about-us .container,
    .contact-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }

    .service-cards {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 24px;
    }

    .fixed-bottom-bar {
        right: 16px;
        bottom: 16px;
    }

    .fixed-bottom-bar img { 
        width: 48px; 
        height: 48px;
    }
}

/* Responsividade - Celulares (<=768px) */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        align-items: center;
        gap: 8px;
        padding: 10px 0;
    }

    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 8px;

    }

   .about-us .container,
    .contact-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
  }

    .hero {
        min-height: 48vh;
        box-shadow: inset 0 0 0 1000px rgba(0,0,0,0.55);
    }

    .hero-content h2 {
        font-size: clamp(1.4rem, 7vw, 2.2rem);
        margin-bottom: 12px;
    }

    .about-text h3,
    .services h3,
    .contact h3 { 
        font-size: 1.6rem; 
    }

    .about-text p { 
        font-size: 1rem;
        line-height: 1.6; 
    }

    .service-cards {
         grid-template-columns: 1fr;
          gap: 18px; 
    }

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

    .contact-content {
         flex-direction: column;
          gap: 18px;
    }

    .contact-form input,
    .contact-form textarea {
         font-size: 0.95rem;
     }

    .footer .container { 
        flex-direction: column; 
        text-align: center; 
    }

    .footer-links a { 
        margin-left: 0;
        margin: 6px 8px;
   }

    .fixed-bottom-bar {
         right: 12px; bottom: 12px;
    }

    .fixed-bottom-bar img { 
        width: 44px; 
        height: 44px;
    }
}

/* Extra small phones (<=480px) */
@media (max-width: 480px) {
    .header .logo h1 {
         font-size: 1.4rem;
     }

    .header .logo p  {
         font-size: 0.7rem;
     }

    .hero-content h2 {
         font-size: 1.25rem;
     }

    .service-cards .card i {
        font-size: 2.2em;
    }

    .btn { 
        padding: 8px 12px;
     }

    .fixed-bottom-bar { 
        display: none; 
    } 
}