:root {
  --marrom-escuro: #2B1B1B;
  --marrom-medio: #7A4F2B;
  --bege: #FFF3E0;
  --ambar: #FFB300;
  --cta-hover: #FFC400;
  --laranja: #FF6D00;
  --dourado: #FFD700;
  --branco: #FFFFFF;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background-color: var(--marrom-escuro);
  color: var(--bege);
  line-height: 1.6;
  overflow-x: hidden;
}

/* HERO */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 50px 5%;
  text-align: center;
}

.hero-text {
  display: flex;
  flex-direction: column; /* para ter linha 1 e linha 2 */
  align-items: center;
  gap: 2rem;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  text-align: left;
}

.hero-text h1 {
  font-size: 3rem;
  line-height: 1.2;
  text-align: center;
  margin-bottom: 1.5rem;
}

.hero-subcontainer {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 3vw;
  width: 100%;
}

.hero-subcontainer p {
  flex: 1;
  font-size: 1.1rem;
  line-height: 1.5;
  max-width: 45%;
  text-align: left;
}

#container-arthur-endo-principal {
  width: 30vw;
  height: 40vw;
  background: linear-gradient(to right, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 40%),
              url('./arthur-endo1.jpg');
  background-size: cover;
  background-position: center;
  border-radius: 10px;
  z-index: 2;
}

.hero-text span {
  font-weight: 700;
  color: var(--dourado);
  text-align: center;
  line-height: 1.2;
  position: relative;
  animation: glow 2s infinite alternate;
  overflow: hidden;
}

@keyframes glow {
  0% { text-shadow: 0 0 0.3vw var(--dourado), 0 0 0.6vw var(--laranja), 0 0 0.9vw #FF8C00; }
  50% { text-shadow: 0 0 0.5vw var(--dourado), 0 0 1vw var(--laranja), 0 0 1.2vw #FF4500; }
  100% { text-shadow: 0 0 0.3vw var(--dourado), 0 0 0.6vw var(--laranja), 0 0 0.9vw #FF8C00; }
}

.btn {
  display: inline-block;
  margin-top: 25px;
  padding: 15px 30px;
  background-color: var(--laranja);
  color: var(--branco);
  font-weight: bold;
  text-decoration: none;
  border-radius: 8px;
  transition: 0.3s;
}

.btn:hover {
  background-color: #ff9500;
}

.cta-button {
  background-color: var(--ambar);
  color: var(--marrom-escuro);
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.2s, background 0.3s;
  display: inline-block;
  margin-bottom: 1rem;
}

.cta-button:hover {
  background-color: var(--cta-hover);
  transform: scale(1.05);
}

/* FOTO PROFESSOR */
#foto-arthur {
  width: 120px;
  height: 120px;
  aspect-ratio: 1/1;
  border-radius: 50%;
  border: 3px solid var(--ambar);
  object-fit: cover;
  display: block;
}

/* DEMO VIDEO */
.demo-video-section {
  color: var(--marrom-escuro);
  text-align: center;
  padding: 2rem 5%;
  border-radius: 12px;
  margin: 2rem auto;
  max-width: 800px;
}

.demo-video-section h2 {
  font-size: 2rem;
  color: var(--ambar);
  margin-bottom: 1.5rem;
}

.demo-video-section video {
  width: 100%;
  max-width: 700px;
  height: auto;
  aspect-ratio: 16/9;
  border-radius: 12px;
  border: 4px solid var(--marrom-escuro);
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

/* restante do CSS permanece inalterado... */

/* MOBILE */
@media (max-width: 600px) {
  .hero-text {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero-subcontainer {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
  }

  .hero-subcontainer p {
    max-width: 90%;
    text-align: center;
  }

  #container-arthur-endo-principal {
    width: 80%;
    height: 60vw;
  }
}