:root {
  --bg: #0A1E5B;
  --card: #0f141b;
  --muted: #8b9bb0;
  --text: #e6eef8;
  --primary: #6aa6ff;
  --primary-600: #4b8ef5;
  --positive: #36d399;
  --negative: #f87272;
  --warning: #fbbf24;
  --ring: 0 0 0 6px rgba(106, 166, 255, 0.15);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --gradient: linear-gradient(135deg, rgba(106, 166, 255, 0.1), rgba(54, 211, 153, 0.05));
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(1200px 600px at 10% -20%, rgba(106, 166, 255, 0.15), transparent 50%),
    radial-gradient(900px 500px at 100% 0%, rgba(54, 211, 153, 0.12), transparent 40%);
  z-index: -1;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header, .site-footer {
  position: sticky;
  top: 0;
  backdrop-filter: blur(20px);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border-bottom: 1px solid rgba(255,255,255,0.1);
  z-index: 100;
}

.site-header .container, .site-footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 0;
}

.site-footer {
  position: static;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: none;
  margin-top: 48px;
}

.site-footer a {
  color: #5194F7;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.site-footer a:hover {
  color: #3d7ae8;
  text-decoration: underline;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-logo { 
  width: 208px; 
  height: auto; 
  display: block; 
  transition: transform 0.3s ease;
}

.brand-logo:hover {
  transform: scale(1.05);
}

main.container { padding: 32px 0; }

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  text-align: center;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--positive));
}

.card:hover {
  transform: translateY(-4px);
}

.card + .card { margin-top: 20px; }

.hidden { display: none; }

h1, h2 { 
  margin: 0 0 16px; 
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
}

h1 {
  font-size: 32px;
  background: linear-gradient(135deg, var(--text), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

h2 {
  font-size: 24px;
  color: var(--text);
}

p { 
  margin: 0 0 32px; 
  color: var(--muted); 
  font-size: 16px;
  line-height: 1.6;
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.button {
  appearance: none;
  border: none;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  color: var(--text);
  padding: 16px 24px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 16px;
  border: 1px solid rgba(255,255,255,0.1);
  position: relative;
  overflow: hidden;
}

.button.primary {
  margin-top:20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  color: white;
  font-weight: 700;
}

.button.ghost { 
  background: transparent; 
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text);
}

.button:disabled { 
  opacity: 0.5; 
  cursor: not-allowed; 
  transform: none !important;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border-color: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
}

.button:hover:not(:disabled) { 
  transform: translateY(-3px); 
}

.button .ph {
  font-size: 20px;
}

/* Formulário inicial - Design 2025 */
.initial-form-container {
  margin: 40px 0;
  padding: 40px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(20px);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  position: relative;
  overflow: hidden;
}

.initial-form-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899, #f59e0b);
  border-radius: 24px 24px 0 0;
}

.initial-form-container .form {
  display: grid;
  gap: 24px;
  margin: 0;
}

.initial-form-container .form-group {
  position: relative;
  margin-bottom: 0;
}

.initial-form-container .form-group label {
  display: block;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.initial-form-container .form-group input {
  width: 100%;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
}

.initial-form-container .form-group input:focus {
  outline: none;
  border-color: #6366f1;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 
    0 0 0 4px rgba(99, 102, 241, 0.1),
    0 8px 25px rgba(99, 102, 241, 0.15);
  transform: translateY(-2px);
}

.initial-form-container .form-group input::placeholder {
  color: rgba(255, 255, 255, 0.4);
  font-weight: 400;
}

.initial-form-container .button {
  margin-top: 32px;
  padding: 18px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 16px;
  background: #00AFEF;
  border: none;
  color: white;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.initial-form-container .button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.initial-form-container .button:hover::before {
  left: 100%;
}

.initial-form-container .button:hover {
  transform: translateY(-3px);
  background: #0099D6;
}

.initial-form-container .button:active {
  transform: translateY(-1px);
}

.quiz-info {
  margin: 30px 0;
  padding: 30px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.05));
  border-radius: 20px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.quiz-info::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.5), transparent);
}

.quiz-info p {
  margin-bottom: 20px;
  line-height: 1.7;
  font-size: 16px;
  color: var(--text);
  position: relative;
  z-index: 1;
}

.quiz-info p:last-child {
  margin-bottom: 0;
  font-weight: 600;
  color: #8b5cf6;
}

/* Animações de entrada */
.initial-form-container .form-group {
  animation: slideInUp 0.6s ease-out forwards;
  opacity: 0;
  transform: translateY(30px);
}

.initial-form-container .form-group:nth-child(1) { animation-delay: 0.1s; }
.initial-form-container .form-group:nth-child(2) { animation-delay: 0.2s; }
.initial-form-container .form-group:nth-child(3) { animation-delay: 0.3s; }
.initial-form-container .form-group:nth-child(4) { animation-delay: 0.4s; }

.initial-form-container .button {
  animation: slideInUp 0.6s ease-out 0.5s forwards;
  opacity: 0;
  transform: translateY(30px);
}

@keyframes slideInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Spinner para loading */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.initial-form-container .button i.ph-spinner {
  animation: spin 1s linear infinite;
}

/* Responsivo */
@media (max-width: 768px) {
  .initial-form-container {
    margin: 20px 0;
    padding: 24px;
    border-radius: 20px;
  }
  
  .initial-form-container .form-group input {
    padding: 14px 16px;
    font-size: 15px;
  }
  
  .initial-form-container .button {
    padding: 16px 24px;
    font-size: 15px;
  }
  
  .quiz-info {
    padding: 20px;
    margin-top: 30px;
  }
}

/* Notificações de quiz */
.quiz-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 16px 20px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1001;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
}

.quiz-notification.show {
  transform: translateX(0);
}

.quiz-notification.quiz-success {
  border-color: var(--positive);
  background: rgba(54, 211, 153, 0.1);
}

.quiz-notification.quiz-error {
  border-color: var(--negative);
  background: rgba(248, 114, 114, 0.1);
}

.quiz-notification i {
  font-size: 20px;
}

.video-container {
  margin: 32px auto;
  display: flex;
  justify-content: center;
  max-width: 800px;
}

.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}

.video-wrapper:hover {
  transform: translateY(-4px);
}

.video-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--positive));
  z-index: 1;
}

.video-placeholder {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: var(--text);
}

.video-thumbnail {
  position: relative;
  flex: 1;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 20px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.video-thumbnail:hover {
  transform: scale(1.02);
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
}

.play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.play-overlay:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: translate(-50%, -50%) scale(1.1);
}

.play-overlay .ph {
  font-size: 32px;
  color: white;
  margin-left: 4px;
}

.video-info {
  text-align: center;
  padding: 0 20px;
}

.video-info h3 {
  font-family: 'DM Sans', sans-serif;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.video-info p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}



.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(106, 166, 255, 0.2), rgba(106, 166, 255, 0.1));
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid rgba(106, 166, 255, 0.3);
  backdrop-filter: blur(10px);
}

.score { color: var(--muted); display: inline-flex; align-items: center; gap: 8px; }

.options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 20px 0 8px;
}

.option {
  padding: 20px 24px;
  border-radius: 16px;
  border: 2px solid rgba(255,255,255,0.1);
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  color: #ffffff;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 16px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.option::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(106, 166, 255, 0.1), rgba(54, 211, 153, 0.05));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.option:hover { 
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  transform: translateY(-2px);
}

.option:hover::before {
  opacity: 1;
}

.option.selected { 
  border-color: var(--primary); 
  background: linear-gradient(135deg, rgba(106, 166, 255, 0.15), rgba(106, 166, 255, 0.05));
}

.option.correct { 
  border-color: var(--positive); 
  background: linear-gradient(135deg, rgba(54,211,153,0.2), rgba(54,211,153,0.1));
  color: var(--positive);
}

.option.incorrect { 
  border-color: var(--negative); 
  background: linear-gradient(135deg, rgba(248,114,114,0.2), rgba(248,114,114,0.1));
  color: var(--negative);
}

.quiz-footer { 
  display: flex; 
  justify-content: space-between; 
  margin-top: 12px; 
  gap: 12px;
}

.result-header { 
  text-align: center; 
  margin-bottom: 32px; 
  padding: 20px 0;
}

.status { 
  font-size: 64px; 
  margin-bottom: 16px; 
  display: flex;
  justify-content: center;
  align-items: center;
}

.status .ph { 
  vertical-align: middle;
}

.result-score {
  margin-top: 20px;
  text-align: center;
}

.result-score .score {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 12px 20px;
  font-weight: 600;
  color: var(--text);
}

.result-score .score i {
  color: var(--primary);
  font-size: 18px;
}

.result-actions {
  margin-top: 32px;
  text-align: center;
}

.form .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  text-align: left;
}

.field { 
  display: flex; 
  flex-direction: column; 
  gap: 10px; 
  text-align: left;
}

.field label { 
  color: var(--text); 
  font-size: 14px; 
  font-weight: 600;
  letter-spacing: 0.5px;
}

.field input {
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 2px solid rgba(255,255,255,0.1);
  color: var(--text);
  border-radius: 12px;
  padding: 16px 20px;
  outline: none;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.field input:focus { 
  border-color: var(--primary); 
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  transform: translateY(-2px);
}

.field input::placeholder {
  color: var(--muted);
  font-weight: 400;
}

.form-message { 
  margin-top: 16px; 
  min-height: 24px; 
  font-size: 14px; 
  font-weight: 500;
  padding: 12px 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-message.success { 
  color: var(--positive); 
  background: rgba(54, 211, 153, 0.1);
  border: 1px solid rgba(54, 211, 153, 0.2);
}

.form-message.error { 
  color: var(--negative); 
  background: rgba(248, 114, 114, 0.1);
  border: 1px solid rgba(248, 114, 114, 0.2);
}

@media (max-width: 720px) {
  .form .grid { 
    grid-template-columns: 1fr; 
    text-align: left;
  }
  .site-header .container, .site-footer .container { padding: 16px 0; }
  
  .card {
    padding: 24px 20px;
    margin: 16px;
  }
  
  h1 {
    font-size: 24px;
    flex-direction: column;
    text-align: center;
    gap: 8px;
    justify-content: center;
  }
  
  .button {
    padding: 14px 20px;
    font-size: 14px;
  }
  
  .option {
    padding: 16px 20px;
    font-size: 14px;
  }
  
  .brand-logo {
    width: 160px;
  }
  
  .video-container {
    margin: 24px auto;
    max-width: 100%;
  }
  
  .video-wrapper {
    max-width: 100%;
    border-radius: 16px;
  }
  
  .video-thumbnail {
    border-radius: 12px;
  }
  
  .video-thumbnail img {
    border-radius: 12px;
  }
  
  .play-overlay {
    width: 60px;
    height: 60px;
  }
  
  .play-overlay .ph {
    font-size: 24px;
  }
  
  .video-info h3 {
    font-size: 18px;
  }
  
  .video-info p {
    font-size: 13px;
  }
  
  
}