:root {
    --fundo: #07110e;
    --painel: rgba(13, 26, 19, .92);
    --verde: #c8ff69;
    --verde-claro: #d7ff83;
    --verde-escuro: #a9f45d;
    --texto: #edf6ef;
    --texto-suave: #c8d8cb;
}

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

body {
    min-height: 100vh;
    display: block;
    color: var(--texto);
    background:
        radial-gradient(
            ellipse at 50% 8%,
            rgba(91, 205, 133, .12),
            transparent 42%
        ),
        var(--fundo);
}

/* Navbar */
header.cabecalho {
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
}

header.cabecalho .navbar {
    width: 96%;
    height: 82px;
    min-height: 82px;
    margin: 12px auto 0;
    padding: 0 7%;
    display: flex;
    align-items: center;
    background: rgba(7, 15, 12, .96);
    border: 1px solid rgba(171, 255, 143, .2);
    border-radius: 18px;
}

header.cabecalho .logo img {
    display: block;
    width: 58px;
    height: auto;
}

header.cabecalho .menu {
    display: flex;
    align-items: center;
    gap: 35px;
    list-style: none;
    margin: 0 35px 0 auto;
}

header.cabecalho .menu li {
    list-style: none;
}

header.cabecalho .menu a {
    color: #edf6ef;
    font-size: 13px;
    font-weight: bold;
    letter-spacing: .06em;
    text-decoration: none;
    transition: color .2s ease;
}

header.cabecalho .menu a:hover {
    color: var(--verde);
}

header.cabecalho .btn-aluno {
    display: inline-block;
    padding: 13px 22px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(
        135deg,
        var(--verde-claro),
        var(--verde-escuro)
    );
    color: #0b160f;
    font-size: 13px;
    font-weight: bold;
    text-decoration: none;
    white-space: nowrap;
    transition: .2s ease;
}

header.cabecalho .btn-aluno:hover {
    background: #efffc6;
    box-shadow: 0 0 25px rgba(177, 255, 105, .2);
}

/* Cartão de cadastro ou login */
main.cadastro {
    width: min(690px, 92vw);
    min-height: 430px;
    margin: 28px auto 0;
    padding: 42px 30px 55px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid rgba(111, 164, 91, .22);
    border-radius: 24px;
    background: var(--painel);
    box-shadow: 0 24px 60px rgba(0, 0, 0, .18);
}

.logo-cadastro {
    width: min(330px, 76vw);
    height: 135px;
    margin-bottom: 5px;
    object-fit: contain;
}

.titulo-cadastro {
    margin-bottom: 32px;
    color: var(--texto);
    font-size: 27px;
    letter-spacing: -.025em;
    text-align: center;
}

.form-cadastro {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.campo {
    display: grid;
    grid-template-columns: 100px minmax(0, 1fr);
    align-items: center;
    gap: 12px;
}

.campo label {
    color: var(--texto-suave);
    font-size: 15px;
    font-weight: bold;
    text-align: right;
}

.campo input {
    width: 100%;
    height: 43px;
    padding: 10px 15px;
    border: 1px solid rgba(171, 255, 143, .2);
    border-radius: 999px;
    background: #09150f;
    color: var(--texto);
    font-size: 15px;
    outline: none;
}

.campo input:focus {
    border-color: var(--verde);
    box-shadow: 0 0 0 3px rgba(200, 255, 105, .13);
}

.area-botao {
    margin-top: 18px;
    text-align: center;
}

.btn-criar {
    min-width: 124px;
    padding: 14px 42px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(
        135deg,
        var(--verde-claro),
        var(--verde-escuro)
    );
    color: #0b160f;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
}

/* Mensagem do formulário */
#mensagem {
    margin-top: 12px;
    color: var(--texto);
    font-size: 13px;
    text-align: center;
}

/* Ajustes para telas menores */
@media (max-width: 650px) {
    header.cabecalho .navbar {
        width: 96%;
        height: auto;
        min-height: 70px;
        margin-top: 10px;
        padding: 12px 18px;
        border-radius: 16px;
    }

    header.cabecalho .logo img {
        width: 48px;
    }

    header.cabecalho .menu {
        display: none;
    }

    header.cabecalho .btn-aluno {
        margin-left: auto;
    }

    main.cadastro {
        width: 92%;
        min-height: auto;
        margin-top: 22px;
        padding: 30px 20px 40px;
    }
}

@media (max-width: 420px) {
    .campo {
        grid-template-columns: 1fr;
        gap: 5px;
    }

    .campo label {
        text-align: left;
    }

    .titulo-cadastro {
        font-size: 22px;
    }
}

/* Efeito de afundar no botão Criar */
button.btn-criar {
    position: relative;
    top: 0;
    transform: scale(1);
    box-shadow:
        0 5px 0 #72b33e,
        0 8px 16px rgba(0, 0, 0, .25);
    transition:
        top .1s ease,
        transform .1s ease,
        box-shadow .1s ease,
        filter .1s ease;
}

button.btn-criar:hover {
    filter: brightness(1.06);
}

button.btn-criar:active {
    top: 4px;
    transform: scale(.97);
    box-shadow:
        0 1px 0 #72b33e,
        0 2px 5px rgba(0, 0, 0, .2);
    filter: brightness(.92);
}

@media (prefers-reduced-motion: reduce) {
    button.btn-criar {
        transition: none;
    }
}

.link-recuperacao {
    margin-top: 16px;
    text-align: center;
}

.link-recuperacao a {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    color: #315f40;
    background: rgba(90, 138, 90, .12);
    font-size: 15px;
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: background-color .18s ease, color .18s ease, box-shadow .18s ease;
}

.link-recuperacao a:hover,
.link-recuperacao a:focus-visible {
    color: #20482e;
    background: rgba(90, 138, 90, .22);
    box-shadow: 0 0 0 2px rgba(49, 95, 64, .2);
}

.link-recuperacao a:focus-visible {
    outline: 2px solid #315f40;
    outline-offset: 2px;
}
.texto-recuperacao {
    max-width: 500px;
    margin: -16px 0 24px;
    color: var(--texto-suave);
    line-height: 1.5;
    text-align: center;
}