* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --roxo: #8a3ffc;
    --roxo-claro: #b98cff;
    --roxo-escuro: #14031f;
    --ciano: #3be0f0;
    --texto: #ffffff;
    --texto-suave: rgba(255, 255, 255, 0.75);
    --vidro: rgba(40, 10, 80, 0.4);
    --borda-vidro: rgba(255, 255, 255, 0.18);
    --erro: #fe4366;
}

html, body {
    min-height: 100%;
}

body {
    font-family: "Montserrat", "Segoe UI", Arial, sans-serif;
    color: var(--texto);
    background-color: var(--roxo-escuro);
}

/* ---------- Imagem de fundo ---------- */
.background {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image: url("../img/WhatsApp Image 2026-09-25 at 14.49.29.jpeg");
    background-color: var(--roxo-escuro);
    background-repeat: no-repeat;
    background-size: auto 100%;
    background-position: left center;
}

/* escurece o lado do formulário para dar leitura */
.background::after {
    content: "";
    position: absolute;
    inset: 0;
    /* funde a borda direita da imagem com a cor de fundo */
    background:
        radial-gradient(ellipse 60% 70% at 100% 50%, rgba(138, 63, 252, 0.25), transparent 70%),
        linear-gradient(90deg,
            transparent calc(100vh - 220px),
            var(--roxo-escuro) 100vh);
}

/* ---------- Layout ---------- */
.seccao-formulario {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 32px clamp(20px, 7vw, 120px);
}

/* ---------- Formulário (vidro) ---------- */
.formulario {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    max-width: 420px;
    padding: 32px 28px;
    border-radius: 24px;
    background: var(--vidro);
    border: 1px solid var(--borda-vidro);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    box-shadow: 0 20px 60px rgba(10, 0, 30, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.cabecalho-form img{
    width: 30px;
    height: auto;
}

.cabecalho-form h1 {
    font-size: 1.6rem;
    font-weight: 900;
    line-height: 1.15;
    text-transform: uppercase;
}

.cabecalho-form h1 strong {
    display: block;
    color: var(--roxo-claro);
}

.cabecalho-form p {
    margin-top: 8px;
    font-size: 0.95rem;
    color: var(--texto-suave);
}

.titulo-form {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--borda-vidro);
    font-size: 0.85rem;
}

.titulo-form span:first-child {
    font-weight: 700;
}

.titulo-form span:last-child {
    color: var(--texto-suave);
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field label {
    font-size: 0.9rem;
    font-weight: 600;
}

.field input {
    width: 100%;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--texto);
    padding: 12px 14px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.field input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.field input:focus {
    border-color: var(--roxo-claro);
    background-color: rgba(255, 255, 255, 0.16);
    outline: none;
    box-shadow: 0 0 0 3px rgba(168, 112, 255, 0.35);
}

.field input.invalido {
    border-color: var(--erro);
}

.erro {
    min-height: 0;
    font-size: 0.8rem;
    color: var(--erro);
}

.erro:empty {
    display: none;
}

.field button {
    margin-top: 6px;
    border: none;
    border-radius: 999px;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    padding: 15px;
    color: var(--roxo-escuro);
    background: linear-gradient(90deg, var(--ciano), #8ff3fb);
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(59, 224, 240, 0.35);
    transition: transform 0.15s, box-shadow 0.15s;
}

.field button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(59, 224, 240, 0.5);
}

.field button:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 3px;
}

.field button:disabled {
    opacity: 0.7;
    cursor: wait;
    transform: none;
}

.rodape-form {
    font-size: 0.72rem;
    line-height: 1.4;
    color: var(--texto-suave);
    text-align: center;
}

/* ---------- Mensagem de sucesso ---------- */
.sucesso {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 32px;
    text-align: center;
    border-radius: 24px;
    background: rgba(20, 3, 31, 0.92);
}

.sucesso[hidden] {
    display: none;
}

.sucesso h2 {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--roxo-claro);
}

/* ---------- Tablet / celular ---------- */
@media (max-width: 900px) {
    .background {
        background-image: url("../img/WhatsApp Image 2026-09-25 at 14.48.55.jpeg");
        background-size: 100% auto;
        background-position: center top;
    }

    .background::after {
        background: linear-gradient(180deg,
            transparent 35%,
            rgba(20, 3, 31, 0.6) 60%,
            var(--roxo-escuro) 90%);
    }

    .seccao-formulario {
        justify-content: center;
        align-items: flex-end;
        padding: 45vh 16px 24px;
    }

    /* a imagem já mostra o título no celular */
    .cabecalho-form h1 {
        display: none;
    }
}

@media (max-width: 400px) {
    .formulario {
        padding: 24px 18px;
    }

    .cabecalho-form h1 {
        font-size: 1.35rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}