/* Reset e configurações base para a página index */
body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow-x: hidden;
    font-family: 'Arial', sans-serif;
    /* Evita conflitos com outros estilos */
    position: relative;
}

/* Container principal com efeito de profundidade */
main {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background:
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
}

/* Container da imagem com múltiplos efeitos */
.hero-container {
    position: relative;
    max-width: 800px;
    width: 100%;
    perspective: 1000px;
    /* Garante que o container tenha altura suficiente */
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;

    overflow: visible; /* para o título não “cortar” no slide-in */

}

/* Círculos de fundo animados */
.background-circles {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    z-index: 0;
    /* Evita overflow */
    pointer-events: none;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
    /* Melhora a performance */
    will-change: transform;
}

.circle:nth-child(1) {
    width: 200px;
    height: 200px;
    background: #fff;
    top: 10%;
    left: 10%;
    animation-delay: -1s;
}

.circle:nth-child(2) {
    width: 150px;
    height: 150px;
    background: #4facfe;
    top: 70%;
    right: 20%;
    animation-delay: -3s;
}

.circle:nth-child(3) {
    width: 100px;
    height: 100px;
    background: #00f2fe;
    bottom: 20%;
    left: 20%;
    animation-delay: -5s;
}

/* Imagem principal com animação complexa */
.hero-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 20px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    /* Removeu rotação inicial para deixar reta */
    transform: rotateX(0deg) rotateY(0deg);
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: heroEntrance 2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards,
               gentleFloat 4s ease-in-out 2s infinite;
    opacity: 0;
    position: relative;
    z-index: 2;
    /* Melhora a performance */
    will-change: transform, opacity;
}

/* Efeito de brilho que passa pela imagem */
.hero-image::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.5) 50%,
        transparent 70%);
    transform: rotate(-45deg) translateX(-100%);
    animation: shine 3s ease-in-out 1s infinite;
    z-index: 1;
    border-radius: 20px;
    pointer-events: none;
}

/* Hover effects */
.hero-image:hover {
    transform: rotateX(0deg) rotateY(0deg) scale(1.08);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.2);
}



.particle:nth-child(odd) {
    background: rgba(79, 172, 254, 0.6);
    animation-duration: 12s;
}

/* Título animado */
.hero-title {
    position: absolute;
    bottom: min(8vw, 48px);             /* em vez de -80px */
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 2.5rem;
    font-weight: bold;
    text-align: center;
    opacity: 0;
    animation: titleSlideUp 1.5s ease-out 1.5s forwards;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.5);
    /* Evita quebra de linha */
    white-space: nowrap;
    /* Melhora a legibilidade */
    letter-spacing: 1px;
    z-index: 3;                         /* acima da imagem (z:2) e partículas (z:1) */

}

/* Pulso de energia */
.energy-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    animation: pulse 4s ease-in-out infinite;
    z-index: 0;
    pointer-events: none;
}

/* ANIMAÇÕES */
@keyframes heroEntrance {
    0% {
        opacity: 0;
        transform: rotateX(0deg) rotateY(0deg) scale(0.5) translateY(100px);
    }
    50% {
        opacity: 0.7;
        transform: rotateX(0deg) rotateY(0deg) scale(0.8) translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: rotateX(0deg) rotateY(0deg) scale(1) translateY(0px);
    }
}

/* Nova animação de flutuação suave */
@keyframes gentleFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-15px) scale(1.02);
    }
}

@keyframes shine {
    0% {
        transform: rotate(-45deg) translateX(-100%);
    }
    100% {
        transform: rotate(-45deg) translateX(100%);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(180deg);
    }
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

@keyframes titleSlideUp {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0px);
    }
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.7;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.3;
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.7;
    }
}

/* Responsivo */
@media (max-width: 768px) {
    .hero-title {
        font-size: 1.8rem;
        bottom: 6vw;           /* em vez de -50px */
        /* Permite quebra em telas pequenas */
        white-space: normal;
    }

    .hero-container {
        max-width: 90%;
        min-height: 300px;
    }

    main {
        padding: 1rem;
        min-height: 80vh;
    }

    .hero-image {
        max-width: 90%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
         bottom: 7vw;           /* em vez de -40px */
    }

    .hero-container {
        min-height: 250px;
    }

    /* Reduz partículas em telas pequenas para melhor performance */
    .particle:nth-child(n+15) {
        display: none;
    }
}

/* Efeito de carregamento (opcional) */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeOut 1s ease-out 2s forwards;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeOut {
    0% { opacity: 1; }
    100% { opacity: 0; visibility: hidden; }
}

/* Otimizações de performance */
* {
    box-sizing: border-box;
}

/* Melhora a renderização de elementos animados */
.hero-image,
.particle,
.circle,
.energy-pulse {
    transform-style: preserve-3d;
    backface-visibility: hidden;
}

/* CSS: brilho, glow e animação com drift */
.particles {
  position: absolute;      /* ou fixed, conforme seu layout */
  inset: 0;
  overflow: hidden;
  pointer-events: none;    /* não bloquear cliques */
  z-index: 1;              /* aumente se ficar atrás */
}

.particle {
  position: absolute;
  top: 100vh;                          /* nasce fora da tela, embaixo */
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  background: var(--color, #fff);
  opacity: var(--opacity, .7);
  filter: blur(0.3px);
  box-shadow:
    0 0 6px rgba(255,255,255,.8),
    0 0 14px rgba(180,220,255,.6);     /* glow suave */
  transform: translate3d(0,0,0);
  will-change: transform, opacity;
  animation: rise var(--duration, 12s) linear var(--delay, 0s) infinite;
}

@keyframes rise {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  50% {
    transform: translate3d(var(--drift, 0px), -50vh, 0) scale(1.02);
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translate3d(calc(var(--drift, 0px) * 2), -100vh, 0) scale(1);
    opacity: 0;
  }
}