:root {
  --bg-primary: #1739c0;
  --bg-secondary: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-writh: #ffffff;
  --accent: #1739c0;
  --accent-hover: #0ea5e9;
  --accent-secondary: #818cf8;
  --gradient: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--accent-secondary) 100%
  );
  --bg-buttom-github: #262c36;
  --bg-writh: #ffffff;
}

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

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

/* Background Mesh Effect */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(
      circle at 10% 20%,
      color-mix(in srgb, var(--accent-hover) 18%, transparent) 0%,
      transparent 40%
    ),
    radial-gradient(
      circle at 90% 80%,
      color-mix(in srgb, var(--accent-secondary) 18%, transparent) 0%,
      transparent 40%
    );
  z-index: -1;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-primary);
  backdrop-filter: blur(10px);
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

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

nav ul {
  display: none;
  gap: 2rem;
  list-style: none;
}

nav a {
  color: var(--text-writh);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 6rem 0 0 0; /* Add top padding to clear fixed header */
  background-color: var(--bg-primary);
  background-image: url("img/background_header.svg");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  padding: 0 5%;
  max-width: 1000px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero h1 span {
  /* background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; */
  color: #fff; /* Keep it solid white like mockup */
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 800px;
  margin-bottom: 2.5rem;
  font-weight: 300;
}

/* Services Highlight (3 Boxes) */
.services-highlight {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.service-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2rem 1.5rem;
  min-width: 220px;
  min-height: 140px;
  gap: 1rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  text-decoration: none;
}

.service-box:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.service-box svg {
  color: #4facfe;
}

.service-box span {
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.3;
  color: #fff;
}

/* Laptop Image Area */
.hero-laptop {
  width: 100%;
  max-width: 800px;
  margin: 0 auto 2rem auto;
  position: relative;
}

.hero-laptop img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px; /* Slight border radius for realism if needed */
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.5));
}

/* Large CTA Button */
.cta-container {
  margin-bottom: 4rem;
}

.btn-large {
  background-color: #1a3cb3;
  color: white;
  padding: 1rem 4rem;
  font-size: 1.2rem;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
}

.btn-large:hover {
  background-color: #122880;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.btn-whatsapp {
  background-color: #25D366;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}

.btn-whatsapp:hover {
  background-color: #128C7E;
  box-shadow: 0 6px 20px rgba(18, 140, 126, 0.6);
}

/* Sobre Section */
.section-sobre {
  background-color: var(--bg-secondary);
  position: relative;
  max-width: 100%;
  padding: 4rem 5%;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sobre-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 5%;

}

.sobre-text {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-top: 1rem;
}

.sobre-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  padding: 0.8rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  flex-shrink: 0;
}

.btn-primary {
  /* background: var(--gradient);*/
  background-color: var(--bg-primary);
  color: var(--text-writh);
}

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

.btn-github {
  border: 1px solid var(--bg-buttom-github);
  background: var(--bg-buttom-github);
  color: var(--text-writh);
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Sections */
section {
  padding: 4rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
}

/* Stack Section */
.section-stack {
  padding: 4rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.stack-container {
  max-width: 1000px;
  margin: 0 auto;
}

.section-title.left-align {
  text-align: left;
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

.section-title.left-align::after {
  display: none;
}

.stack-divider {
  border: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin-bottom: 2rem;
}

.tech-tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.tech-tag {
  background: rgba(0, 0, 0, 0.2); /* Dark button background */
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 0.8rem 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.95rem;
  color: #e2e8f0;
  transition: all 0.2s;
}

.tech-tag:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

.tech-tag svg {
  color: #94a3b8;
}

.tech-tag .text-icon {
  color: #94a3b8;
  font-weight: bold;
  font-size: 0.85rem;
}

/* Clients */
.clients-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 2rem;
}

.client-tag {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s;
}

.client-tag:hover {
  background: var(--accent-hover);
  color: var(--text-writh);
  border-color: var(--accent-hover);
}

/* Bottom Contact Bar */
.bottom-bar {
  background-color: #ffffff;
  color: #000;
  padding: 1.5rem 5%;
  border-top: 1px solid #eaeaea;
}

.bottom-bar-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.bottom-bar-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bottom-bar-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.bottom-bar-text.right-align {
  text-align: center;
}

.bottom-bar-text .lbl {
  font-size: 0.8rem;
  color: #666;
}

.bottom-bar-text strong {
  font-size: 1.1rem;
  color: #000;
  font-weight: 700;
}

.bottom-bar-item svg {
  color: #1a3cb3;
}

.contact-icon {
  background-color: #1a3cb3;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  transition: transform 0.2s;
}
.contact-icon svg {
  color: #fff;
}

.contact-icon:hover {
  transform: scale(1.1);
}


/* Desktop Responsiveness (Mobile First) */
@media (min-width: 768px) {
  nav ul {
    display: flex;
  }
  
  .hero-content {
    padding: 2rem 5%;
  }

  .services-highlight {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
  }
  
  section {
    padding: 6rem 10%;
  }
  
  .section-sobre {
    padding: 6rem 5%;
  }

  .section-stack {
    padding: 6rem 10%;
  }

  .cta-group {
    justify-content: flex-start;
  }

  .bottom-bar-content {
    flex-direction: row;
    justify-content: space-between;
  }

  .bottom-bar-text.right-align {
    text-align: right;
  }
}


/* Chat FAB (n8n Integration) */
.chat-fab-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.chat-fab {
  background-color: var(--accent);
  color: white;
  border: none;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: transform 0.3s, background-color 0.3s;
}

.chat-fab:hover {
  transform: scale(1.1);
  background-color: var(--accent-hover);
}

.chat-widget {
  background: white;
  width: 300px;
  height: 400px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.3s, transform 0.3s;
  transform-origin: bottom right;
}

.chat-widget.hidden {
  opacity: 0;
  transform: scale(0);
  pointer-events: none;
}

.chat-header {
  background-color: var(--bg-primary);
  color: white;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.chat-header button {
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.chat-body {
  padding: 1rem;
  flex: 1;
  color: #333;
  display: flex;
  align-items: center;
  text-align: center;
  justify-content: center;
}

/* Tech Carousel */
.tech-carousel-wrapper {
  overflow: hidden;
  width: 100%;
  margin-top: 4rem;
  padding: 1rem 0;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.tech-carousel {
  display: flex;
  gap: 4rem;
  width: max-content;
  animation: scroll 30s linear infinite;
  align-items: center;
}

.tech-carousel:hover {
  animation-play-state: paused;
}

.tech-carousel img {
  height: 50px;
  width: auto;
  opacity: 0.8;
  transition: all 0.3s;
}

.tech-carousel img:hover {
  opacity: 1;
  transform: scale(1.1);
}

@keyframes scroll {
  to {
    transform: translateX(calc(-50% - 2rem));
  }
}