/* ===== RESET E BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Paleta de cores inspirada na CTI Tecnologias */
  --primary-purple: #6B46C1;
  --primary-purple-light: #8B5CF6;
  --primary-purple-dark: #553C9A;
  --secondary-blue: #3B82F6;
  --accent-orange: #F59E0B;
  
  /* Cores neutras (estilo Apple) */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* Tipografia */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Espaçamentos */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Bordas */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-50);
  overflow-x: hidden;
}

/* ===== COMPONENTES REUTILIZÁVEIS ===== */

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  font-size: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-purple-light) 100%);
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, var(--primary-purple-dark) 0%, var(--primary-purple) 100%);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary-purple);
  border: 2px solid var(--primary-purple);
}

.btn-secondary:hover {
  background: var(--primary-purple);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
  border: 1px solid var(--gray-300);
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--gray-800);
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-course {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border-radius: var(--radius-lg);
}

.card-course:hover .card-overlay {
  opacity: 1;
}

.card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(107, 70, 193, 0.9), rgba(59, 130, 246, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* Inputs */
.input {
  width: 100%;
  padding: 16px 20px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 16px;
  transition: all 0.3s ease;
  background: var(--white);
}

.input:focus {
  outline: none;
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.1);
}

.input-group {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.input-label {
  position: absolute;
  top: 16px;
  left: 20px;
  color: var(--gray-500);
  font-size: 16px;
  transition: all 0.3s ease;
  pointer-events: none;
}

.input:focus + .input-label,
.input:not(:placeholder-shown) + .input-label {
  top: -8px;
  left: 16px;
  font-size: 12px;
  color: var(--primary-purple);
  background: var(--white);
  padding: 0 8px;
}

/* ===== HEADER E NAVEGAÇÃO ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  z-index: 1000;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--gray-200);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 24px;
  color: var(--primary-purple);
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* ===== LANDING PAGE ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  padding-top: 80px;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

.hero-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

/* Seções da Landing Page */
.section {
  padding: var(--spacing-3xl) 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-xl);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  color: var(--white);
  font-size: 24px;
}

/* ===== LOGIN PAGE ===== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--secondary-blue) 100%);
  padding: var(--spacing-lg);
}

.login-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.login-subtitle {
  color: var(--gray-600);
  font-size: 1rem;
}

.login-form {
  margin-bottom: var(--spacing-xl);
}

.forgot-password {
  text-align: center;
  margin-top: var(--spacing-md);
}

.forgot-password a {
  color: var(--primary-purple);
  text-decoration: none;
  font-size: 14px;
}

.login-footer {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--gray-200);
}

/* ===== COURSES PAGE (Netflix Style) ===== */
.courses-container {
  padding-top: 80px;
  min-height: 100vh;
  background: var(--gray-900);
  color: var(--white);
}

.courses-hero {
  background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.7)), url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%236B46C1" width="1200" height="600"/></svg>');
  background-size: cover;
  background-position: center;
  padding: var(--spacing-3xl) 0;
}

.courses-hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.courses-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.courses-hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

.courses-section {
  padding: var(--spacing-xl) 0;
}

.courses-section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  padding: 0 var(--spacing-lg);
}

.courses-row {
  overflow-x: auto;
  padding-bottom: var(--spacing-md);
}

.courses-grid {
  display: flex;
  gap: var(--spacing-md);
  padding: 0 var(--spacing-lg);
  min-width: max-content;
}

.course-card {
  width: 300px;
  background: var(--gray-800);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.course-card:hover {
  transform: scale(1.05);
  z-index: 10;
}

.course-thumbnail {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 48px;
}

.course-info {
  padding: var(--spacing-md);
}

.course-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.course-description {
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* ===== COURSE DETAIL PAGE ===== */
.course-detail {
  padding-top: 80px;
  min-height: 100vh;
  background: var(--white);
}

.course-header {
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  color: var(--white);
  padding: var(--spacing-3xl) 0;
}

.course-content {
  padding: var(--spacing-3xl) 0;
}

.course-modules {
  display: grid;
  gap: var(--spacing-lg);
}

.module-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.module-header {
  background: var(--gray-100);
  padding: var(--spacing-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.module-title {
  font-weight: 600;
  font-size: 1.1rem;
}

.module-content {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--gray-200);
}

.lesson-list {
  list-style: none;
}

.lesson-item {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--gray-100);
}

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

.lesson-icon {
  width: 24px;
  height: 24px;
  background: var(--primary-purple);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--spacing-md);
  font-size: 12px;
}

.lesson-info {
  flex: 1;
}

.lesson-title {
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.lesson-duration {
  font-size: 0.9rem;
  color: var(--gray-500);
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .nav-links {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .courses-grid {
    padding: 0 var(--spacing-md);
  }
  
  .course-card {
    width: 250px;
  }
}

/* ===== ANIMAÇÕES ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

/* ===== SCROLL SUAVE ===== */
html {
  scroll-behavior: smooth;
}

/* ===== SCROLLBAR PERSONALIZADA ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-purple);
}