:root {
    --ac-orange: #fb923c;
  }

  /* ✔ FUNDO DIAGONAL ANIMADO — DARK NAVY BLUE PREMIUM (SEU FUNDO) */
  body {
    min-height: 100vh;
    margin: 0;
    color: #e5e7eb;

    /* base azul escuro (não preto) */
    background-color: #121a2c;  /* navy dark limpo */

    /* gradiente vibrante porém dark */
    background-image: linear-gradient(
        30deg,
        rgba(237, 138, 56, 0.10),   /* laranja suave */
        rgba(42, 17, 65, 0.12),     /* roxo suave */
        rgba(64, 25, 74, 0.5),    /* roxo/azul médio profundo */
        rgba(49, 20, 56, 0.5),    /* roxo/azul médio profundo */
        rgba(171, 30, 30, 0.5),    /* roxo/azul médio profundo */
        rgba(4, 6, 10, 0.85)       /* azul navy dark */
      );

    background-size: 350% 350%;
    background-repeat: no-repeat;
    background-blend-mode: normal;

    animation: diagonalFlow 30s ease-in-out infinite alternate;
  }

  /* ✔ Movimento suave e perceptível */
  @keyframes diagonalFlow {
    0%   { background-position: 0% 0%; }
    25%  { background-position: 55% 30%; }
    50%  { background-position: 100% 60%; }
    75%  { background-position: 45% 100%; }
    100% { background-position: 0% 0%; }
  }

  /* ⭐ GLASS-PANEL PREMIUM (novo “vidro”) */
  .glass-panel {
    position: relative;
    overflow: hidden;

    border: solid 1px white;
    border-radius: 1.75rem;

    /* camada de vidro com leve highlight */
    background:
      radial-gradient(circle at 10% 0%, rgba(255, 255, 255, 0.09), transparent 55%),
      radial-gradient(circle at 120% 10%, rgba(251, 146, 60, 0.22), transparent 55%),
      rgba(20, 16, 38, 0.96);

    box-shadow:
      0 24px 70px rgba(0, 0, 0, 0.9),
      0 0 0 1px rgba(15, 23, 42, 0.9),
      0 0 45px rgba(251, 146, 60, 0.22);

    backdrop-filter: blur(24px) saturate(125%);
    -webkit-backdrop-filter: blur(24px) saturate(125%);
  }

  /* reflexo suave diagonal, bem sutil */
  .glass-panel::before {
    content: "";
    position: absolute;
    inset: -30%;
    background: linear-gradient(
      120deg,
      rgba(255, 255, 255, 0.23) 0%,
      rgba(255, 255, 255, 0.06) 32%,
      rgba(255, 255, 255, 0.01) 65%,
      rgba(255, 255, 255, 0) 100%
    );
    opacity: 0.22;
    mix-blend-mode: screen;
    pointer-events: none;
    transform: translate3d(-12px, -6px, 0);
  }

  /* ruído bem leve pra parecer vidro/textura */
  .glass-panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(
        120deg,
        rgba(255, 255, 255, 0.06) 0.5px,
        transparent 0
      ),
      linear-gradient(
        90deg,
        rgba(15, 23, 42, 0.25) 1px,
        transparent 0
      );
    background-size: 140px 280px, 220px 220px;
    opacity: 0.12;
    mix-blend-mode: soft-light;
    pointer-events: none;
  }

  /* se o usuário pedir menos movimento no sistema */
  @media (prefers-reduced-motion: reduce) {
    .glass-panel::before {
      transform: none;
    }
  }

  .input-focus-glow:focus {
    box-shadow:
      0 0 0 1px rgba(251, 146, 60, 0.55),
      0 0 0 1px rgba(251, 146, 60, 0.22);
  }