/* Reset e Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-body);
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
  color: var(--color-neutral-white);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ====== Página principal ====== */
.page {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* ====== Partículas animadas de fundo ====== */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-brand-yellow-accent);
  border-radius: 50%;
  opacity: 0.6;
}

.particle:nth-child(2) {
  background: var(--color-brand-logo-accent);
}

.particle:nth-child(4) {
  background: var(--color-brand-blue-primary);
}

/* ====== Livros flutuantes de fundo ====== */
.floating-books {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.05;
}

.floating-book {
  position: absolute;
  width: 60px;
  height: 90px;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
  filter: blur(1px);
}

.book1 {
  top: 15%;
  left: 5%;
  transform: rotate(-15deg);
}

.book2 {
  top: 70%;
  right: 10%;
  transform: rotate(25deg);
}

.book3 {
  top: 45%;
  left: 85%;
  transform: rotate(-20deg);
}

.book4 {
  top: 85%;
  left: 15%;
  transform: rotate(15deg);
}

/* ====== Seção Hero (principal) ====== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl);
  position: relative;
  z-index: 1;
  background: radial-gradient(
    ellipse at center,
    rgba(66, 126, 201, 0.1) 0%,
    transparent 70%
  );
}

.construction-badge {
  background: linear-gradient(45deg, var(--color-brand-yellow-accent), #ff6b35);
  color: var(--color-neutral-white);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: 3rem;
  box-shadow: 0 0 20px rgba(252, 163, 17, 0.5);
  animation: pulse 2s infinite;
}

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

.hero-logo {
  width: 120px;
  height: 120px;
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  box-shadow: 0 20px 60px rgba(66, 126, 201, 0.4),
    0 0 0 5px rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-lg);
  margin-top: var(--space-lg);
  filter: drop-shadow(0 10px 30px rgba(33, 150, 243, 0.3));
}

.hero-title {
  font-family: var(--font-family-headings);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(
    135deg,
    #ffffff,
    var(--color-brand-yellow-accent),
    var(--color-brand-logo-accent)
  );
  background-clip: text;
  -webkit-background-clip: text;
  color: #ffffff;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-xxl);
  line-height: var(--line-height-heading);
  position: relative;
  z-index: 5;
}

.hero-title span {
  display: inline-block;
  opacity: 0;
  transform: translateY(50px);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  max-width: 700px;
  color: rgba(255, 255, 255, 0.9);
  line-height: var(--line-height-body);
  margin-bottom: 4rem;
}

.hero-subtitle strong {
  color: var(--color-brand-yellow-accent);
}

/* ====== Formulário de cadastro de e-mail ====== */
.email-signup {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 500px;
  width: 100%;
}

.email-signup h3 {
  font-family: var(--font-family-headings);
  color: var(--color-neutral-white);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-lg);
}

.email-form {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.email-form input {
  flex: 1;
  padding: var(--space-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-neutral-white);
  font-size: var(--font-size-base);
  transition: var(--transition-default);
}

.email-form input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.email-form input:focus {
  outline: none;
  border-color: var(--color-brand-yellow-accent);
  box-shadow: 0 0 10px rgba(252, 163, 17, 0.3);
}

.email-form input:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.email-form button {
  background: linear-gradient(
    135deg,
    var(--color-brand-yellow-accent),
    #ff8c42
  );
  color: var(--color-neutral-white);
  border: none;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-md);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: var(--transition-default);
  white-space: nowrap;
}

.email-form button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(252, 163, 17, 0.4);
}

.email-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.success-message {
  background: var(--color-action-success);
  color: var(--color-neutral-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  text-align: center;
  animation: slideDown 0.3s ease;
}

.error-message {
  background: var(--color-action-error);
  color: var(--color-neutral-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  text-align: center;
  animation: slideDown 0.3s ease;
  margin-bottom: var(--space-sm);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ====== Responsividade ====== */
@media (max-width: 768px) {
  .email-form {
    flex-direction: column;
  }

  .hero {
    padding: var(--space-lg);
  }

  .hero-subtitle {
    margin-bottom: 2rem;
  }

  .email-signup {
    margin-top: 2rem;
    padding: var(--space-lg);
  }
}