/* ============================================
   CaraProjetada - Design System
============================================ */

:root {
  --primary: #008CBA;
  --primary-dark: #006699;
  --secondary: #4CAF50;
  --danger: #f44336;
  --warning: #ff9800;
  --dark: #1a1a1a;
  --dark-gray: #2d2d2d;
  --gray: #444;
  --light: #f5f5f5;
  --white: #fff;
  --border-radius: 12px;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-gray) 100%);
  color: var(--light);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.header {
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header__container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header__logo img {
  height: 40px;
  width: auto;
}

.header__logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
}

.header__nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.header__nav a {
  color: var(--light);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--white);
  background: var(--primary);
}

/* Main Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  margin-bottom: 3rem;
  background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.7)), url('https://raw.githubusercontent.com/Deivisan/caraprojetada/main/assets/images/rk3229-tv-box.jpg') center/cover no-repeat;
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--white);
}

.hero__subtitle {
  font-size: 1.5rem;
  color: #ccc;
  margin-bottom: 2rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

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

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

.btn--secondary {
  background: transparent;
  color: var(--light);
  border: 2px solid var(--light);
}

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

/* Section Titles */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--white);
  margin-bottom: 1rem;
}

.section-title p {
  color: #888;
  font-size: 1.1rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.card {
  background: rgba(255,255,255,0.05);
  border-radius: var(--border-radius);
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.card__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.card__title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--white);
}

.card__text {
  color: #aaa;
  margin-bottom: 1.5rem;
}

/* Architecture Diagram */
.architecture {
  margin: 4rem 0;
}

.arch-diagram {
  background: rgba(255,255,255,0.02);
  border-radius: var(--border-radius);
  padding: 2rem;
  overflow-x: auto;
}

.arch-diagram pre {
  font-family: 'Fira Code', monospace;
  color: #00d4ff;
  font-size: 0.9rem;
  line-height: 1.8;
}

/* Features Table */
.features-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: rgba(255,255,255,0.02);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.features-table th,
.features-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.features-table th {
  background: rgba(0,140,186,0.2);
  color: var(--white);
  font-weight: 600;
}

.features-table tr:hover {
  background: rgba(255,255,255,0.05);
}

/* Roadmap */
.roadmap {
  margin: 3rem 0;
}

.roadmap-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: rgba(255,255,255,0.02);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary);
}

.roadmap-item--current {
  border-left-color: var(--warning);
}

.roadmap-item--done {
  border-left-color: var(--secondary);
}

.roadmap-item__status {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
}

.roadmap-item--done .roadmap-item__status {
  color: var(--secondary);
}

.roadmap-item--current .roadmap-item__status {
  color: var(--warning);
}

/* Tutorials */
.tutorial-card {
  background: rgba(255,255,255,0.05);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(255,255,255,0.1);
}

.tutorial-card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tutorial-steps {
  counter-reset: step;
  margin: 1.5rem 0;
}

.tutorial-steps li {
  counter-increment: step;
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
  list-style: none;
}

.tutorial-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  background: var(--primary);
  color: var(--white);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* Code Blocks */
.code-block {
  background: #1e1e1e;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid rgba(255,255,255,0.1);
}

.code-block pre {
  color: #d4d4d4;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

.code-block .comment {
  color: #6a9955;
}

.code-block .keyword {
  color: #569cd6;
}

.code-block .string {
  color: #ce9178;
}

/* Footer */
.footer {
  background: rgba(0,0,0,0.3);
  padding: 3rem 2rem 2rem;
  margin-top: 4rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer__container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.footer__column h4 {
  color: var(--white);
  margin-bottom: 1rem;
}

.footer__column ul {
  list-style: none;
}

.footer__column ul li {
  margin-bottom: 0.5rem;
}

.footer__column ul li a {
  color: #888;
  text-decoration: none;
  transition: var(--transition);
}

.footer__column ul li a:hover {
  color: var(--primary);
}

.footer__bottom {
  max-width: 1400px;
  margin: 2rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  color: #666;
}

/* Responsive */
@media (max-width: 768px) {
  .header__nav ul {
    display: none;
  }
  
  .hero__title {
    font-size: 2rem;
  }
  
  .hero__subtitle {
    font-size: 1.1rem;
  }
  
  .section-title h2 {
    font-size: 2rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* Status Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge--success {
  background: rgba(76, 175, 80, 0.2);
  color: var(--secondary);
}

.badge--warning {
  background: rgba(255, 152, 0, 0.2);
  color: var(--warning);
}

.badge--danger {
  background: rgba(244, 67, 54, 0.2);
  color: var(--danger);
}