/* 
  =========================================
  DESIGN SYSTEM & BASE STYLES
  Theme: Blue & White (Azul e Branco)
  =========================================
*/

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --primary: #0284c7;       /* Bright Sky Blue */
  --primary-hover: #0369a1; /* Darker Sky Blue */
  --primary-light: #e0f2fe; /* Light sky blue background */
  --secondary: #0f172a;     /* Deep Slate Blue (Contrast) */
  --accent: #38bdf8;        /* Electric Light Blue */
  --white: #ffffff;
  --bg-light: #f8fafc;      /* Very soft grey-blue */
  --bg-card: rgba(255, 255, 255, 0.85);
  --border-light: #e2e8f0;
  
  /* Text Colors */
  --text-main: #0f172a;     /* Slate 900 */
  --text-muted: #475569;    /* Slate 600 */
  --text-light: #94a3b8;    /* Slate 400 */
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(2, 132, 199, 0.08), 0 2px 4px -1px rgba(2, 132, 199, 0.04);
  --shadow-lg: 0 10px 25px -5px rgba(2, 132, 199, 0.1), 0 8px 10px -6px rgba(2, 132, 199, 0.05);
  --shadow-glow: 0 0 20px rgba(56, 189, 248, 0.35);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Layout */
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-light);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--secondary);
}

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

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

ul {
  list-style: none;
}

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

/* Reusable Components & Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-title-wrapper {
  text-align: center;
  margin-bottom: 60px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.subtitle {
  color: var(--primary);
  text-transform: uppercase;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  display: inline-block;
}

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

.section-title span {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  cursor: pointer;
  border: 2px solid transparent;
  gap: 8px;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(2, 132, 199, 0.3);
}

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

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

.btn-white {
  background-color: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  background-color: var(--bg-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Header & Navbar */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: var(--transition-normal);
}

header.scrolled {
  padding: 12px 0;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: var(--transition-normal);
}

header.scrolled .navbar {
  height: 60px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.logo span {
  color: var(--primary);
  font-size: 2.1rem;
  font-weight: 900;
  text-shadow: 0 0 12px rgba(2, 132, 199, 0.25);
  line-height: 1;
  display: inline-block;
  transform: translateY(-1px);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: var(--transition-normal);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--secondary);
  margin: 5px 0;
  transition: var(--transition-normal);
  border-radius: var(--radius-full);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 180px 0 120px 0;
  background: radial-gradient(circle at 85% 15%, rgba(56, 189, 248, 0.15) 0%, transparent 60%),
              radial-gradient(circle at 15% 85%, rgba(2, 132, 199, 0.08) 0%, transparent 50%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.05), rgba(56, 189, 248, 0.05));
  filter: blur(80px);
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 650px;
}

.badge {
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  border: 1px solid rgba(2, 132, 199, 0.15);
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--secondary);
}

.hero-title span {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.125rem;
  margin-bottom: 36px;
  color: var(--text-muted);
}

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

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

.hero-card-container {
  position: relative;
  width: 100%;
  max-width: 450px;
  aspect-ratio: 1;
}

.visual-shape {
  position: absolute;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-slow);
}

.shape-main {
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
  background: linear-gradient(135deg, var(--primary), #025a87);
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 30px;
  color: var(--white);
  overflow: hidden;
}

.shape-main::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.1);
  transform: rotate(45deg);
  pointer-events: none;
}

.shape-sub1 {
  width: 50%;
  height: 50%;
  bottom: 0;
  right: 0;
  background: var(--white);
  z-index: 2;
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
  text-align: center;
  box-shadow: 0 15px 35px rgba(2, 132, 199, 0.15);
}

.shape-sub2 {
  width: 45%;
  height: 35%;
  top: 0;
  left: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  z-index: 0;
  transform: translate(-15px, -15px);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.tech-stack {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.tech-icon {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.875rem;
}

/* Services Section */
.services {
  background-color: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.service-card {
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 40px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  background-color: var(--white);
  box-shadow: var(--shadow-lg);
  border-color: rgba(2, 132, 199, 0.15);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 60px;
  height: 60px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 28px;
  transition: var(--transition-normal);
}

.service-card:hover .service-icon {
  background-color: var(--primary);
  color: var(--white);
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.service-title {
  font-size: 1.35rem;
  margin-bottom: 16px;
}

.service-desc {
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.service-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-link svg {
  transition: var(--transition-fast);
}

.service-card:hover .service-link svg {
  transform: translateX(4px);
}

/* About / Features Section */
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.features-visual {
  position: relative;
}

.features-visual-box {
  background: linear-gradient(135deg, var(--bg-light) 0%, rgba(224, 242, 254, 0.4) 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 50px;
  position: relative;
  overflow: hidden;
}

.features-visual-box::after {
  content: '';
  position: absolute;
  top: -50px;
  left: -50px;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0.2;
  filter: blur(20px);
}

.stat-item {
  display: flex;
  gap: 20px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-light);
}

.stat-item:last-child {
  border-bottom: none;
}

.stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  min-width: 100px;
}

.stat-label {
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 4px;
}

.features-list {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.feature-list-item {
  display: flex;
  gap: 16px;
}

.feature-check {
  width: 24px;
  height: 24px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-list-content h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

/* Portfolio Section */
.portfolio {
  background-color: var(--white);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-normal);
}

.filter-btn.active, .filter-btn:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 30px;
}

.portfolio-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
}

.portfolio-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(2, 132, 199, 0.15);
}

.portfolio-img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background-color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.1), rgba(56, 189, 248, 0.1));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--primary);
  transition: var(--transition-normal);
}

.portfolio-card:hover .portfolio-placeholder {
  transform: scale(1.05);
}

.portfolio-info {
  padding: 24px;
}

.portfolio-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  display: inline-block;
}

.portfolio-title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.portfolio-desc {
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.portfolio-link {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Call to Action Section */
.cta-section {
  background: linear-gradient(135deg, var(--secondary) 0%, #020617 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.15) 0%, transparent 60%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  color: var(--white);
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.cta-desc {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 36px;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

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

.contact-card-content h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.contact-card-content p {
  font-size: 0.95rem;
}

.contact-card-content a:hover {
  color: var(--primary);
}

.contact-form-panel {
  background-color: var(--white);
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--secondary);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background-color: var(--bg-light);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-main);
  transition: var(--transition-normal);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  background-color: var(--white);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

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

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--secondary);
  color: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateY(100px);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
  z-index: 2000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast-success {
  border-left: 4px solid var(--accent);
}

/* Footer */
footer {
  background-color: var(--secondary);
  color: var(--text-light);
  padding: 80px 0 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand h3 {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.footer-brand h3 span {
  color: var(--primary);
  font-size: 2.1rem;
  font-weight: 900;
  text-shadow: 0 0 12px rgba(2, 132, 199, 0.25);
  line-height: 1;
  display: inline-block;
  transform: translateY(-1px);
}

.footer-brand p {
  color: var(--text-light);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 38px;
  height: 38px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: var(--transition-fast);
}

.social-link:hover {
  background-color: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-nav h4 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.footer-links {
  display: grid;
  gap: 12px;
}

.footer-links a {
  color: var(--text-light);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  flex-wrap: wrap;
  gap: 20px;
}

/* Mobile & Tablet Responsiveness */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 50px;
    text-align: center;
  }
  
  .hero-content {
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .section {
    padding: 80px 0;
  }
  
  .navbar {
    position: relative;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--white);
    flex-direction: column;
    padding: 40px 24px;
    gap: 24px;
    align-items: stretch;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    transform: translateX(100%);
    transition: var(--transition-normal);
    z-index: 999;
  }
  
  .nav-links.open {
    transform: translateX(0);
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .mobile-menu-btn.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-btn.open span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .hero-title {
    font-size: 2.75rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}