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

body {
    background: #000;
    overflow-x: hidden;
    color: #fff;
}

/* CARD — NEON GLASS */
.card {
    width: 90%;
    max-width: 420px;
    margin: 80px auto;
    padding: 35px;
    border-radius: 22px;
    backdrop-filter: blur(20px) brightness(1.2);
    background: rgba(20, 20, 20, 0.35);
    border: 2px solid;
    border-image: linear-gradient(130deg,
    #00f, #0ff, #ff00ff, #ff0055) 1;
    animation: borderFlow 6s linear infinite;
    box-shadow: 0 0 25px rgba(0, 140, 255, 0.4);
}

@keyframes borderFlow {
    0% { border-image-source: linear-gradient(0deg, #00f, #0ff, #ff00ff); }
    50% { border-image-source: linear-gradient(180deg, #ff00ff, #0ff, #00f); }
    100% { border-image-source: linear-gradient(360deg, #00f, #0ff, #ff00ff); }
}

h1 {
    text-align: center;
    margin-bottom: 25px;
    font-size: 32px;
    color: #fff;
    text-shadow: 0 0 12px #0ff;
}

/* Ícones */
.icons-top {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 25px;
}

.icon {
    font-size: 26px;
    color: #0ff;
    transition: .3s;
    cursor: pointer;
}

.icon:hover {
    color: #fff;
    text-shadow: 0 0 14px #0ff, 0 0 24px #0ff;
    transform: scale(1.15);
}

/* Botões */
.btn {
    display: block;
    padding: 14px;
    margin: 10px 0;
    text-align: center;
    border-radius: 14px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(0, 255, 255, .5);
    text-decoration: none;
    font-size: 18px;
    color: #0ff;
    transition: .25s;
}

.btn:hover {
    background: rgba(0, 255, 255, 0.15);
    transform: scale(1.04);
    box-shadow: 0 0 12px #0ff;
}

/* Partículas */
canvas#particles {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: -1;
}

/* Botão engrenagem */
.settings-btn {
    position: fixed;
    top: 22px;
    right: 22px;
    width: 50px;
    height: 50px;
    background: #111;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #0ff;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 0 12px #0ff;
    transition: .3s;
    z-index: 9999;
}

/* Painel */
.settings-panel {
    position: fixed;
    top: 90px;
    right: 20px;
    width: 260px;
    padding: 22px;
    background: rgba(10, 10, 10, 0.88);
    border-radius: 18px;
    backdrop-filter: blur(20px);
    border: 1px solid #0ff;
    box-shadow: 0 0 20px #0ff;
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: .4s ease;
    z-index: 9999;
}

.settings-panel.active {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.settings-panel button {
    width: 100%;
    margin: 10px 0;
    padding: 10px;
    background: #222;
    color: #0ff;
    border-radius: 10px;
    border: 1px solid #0ff;
    cursor: pointer;
}

/* CONTATO */
.contato {
    width: 100%;
    margin-top: 90px;
    padding-bottom: 180px;
}

.contato h2 {
    text-align: center;
    font-size: 34px;
    margin-bottom: 30px;
}

.contato-box {
    width: 92%;
    max-width: 520px;
    margin: auto;
    padding: 25px;
    border-radius: 20px;
    background: rgba(20, 20, 20, 0.35);
    backdrop-filter: blur(15px);
    border: 2px solid #0ff;
    box-shadow: 0 0 10px #0ff;
}

.input-neon,
.textarea-neon {
    width: 100%;
    margin: 12px 0;
    padding: 12px;
    border-radius: 10px;
    border: 2px solid #333;
    background: #111;
    color: #fff;
}

.textarea-neon {
    height: 130px;
}

.btn-enviar {
    width: 100%;
    margin-top: 10px;
    padding: 14px;
    font-size: 18px;
    border-radius: 12px;
    background: #0ff;
    color: #000;
    border: none;
    cursor: pointer;
    font-weight: bold;
}

#fadeScreen {
    display: none;
}