/* =====================================================
   MENTORIA — dúvidas dos alunos
   Página única, fundo branco, paleta oficial do Portal de Aula.
   ===================================================== */
:root {
    --blue: #4D7CFF;
    --violet: #9B5CFF;
    --orange: #FF8A3D;
    --ink: #0B0B12;
    --text: #2A2B38;
    --mute: #74718A;
    --line: #E6E7EE;
    --surface: #FFFFFF;
    --soft: #F6F7FB;
    --grad: linear-gradient(120deg, var(--blue) 0%, var(--violet) 100%);
    --heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --body: 'DM Sans', system-ui, -apple-system, sans-serif;
    --radius: 18px;
}

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

body {
    background: var(--surface);
    color: var(--text);
    font-family: var(--body);
    font-size: 17px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    /* leve brilho de marca no topo, sem sujar o branco */
    background-image:
        radial-gradient(60rem 30rem at 15% -10%, rgba(77, 124, 255, .10), transparent 60%),
        radial-gradient(50rem 26rem at 95% -6%, rgba(155, 92, 255, .10), transparent 60%);
    background-repeat: no-repeat;
}

.wrap {
    width: min(680px, 100% - 32px);
    margin: 0 auto;
    padding: 28px 0 40px;
}

/* ---------- topo ---------- */
.topo { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
/* Teste de fundo branco: as duas assinaturas na versão escura, direto na página.
   Mesma altura ótica = mesmo peso. */
.marcas { display: inline-flex; align-items: center; gap: 14px; }
.marcas img { display: block; width: auto; }
.m-darlan { height: 22px; }
.m-disce { height: 15px; }
.divisor { width: 1px; height: 20px; background: rgba(11, 11, 18, .18); }
.badge {
    font-family: var(--heading);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--orange);
    border: 1.5px solid rgba(255, 138, 61, .45);
    background: rgba(255, 138, 61, .08);
    border-radius: 999px;
    padding: 6px 14px;
}

/* ---------- hero ---------- */
.hero { margin: 44px 0 26px; }
.hero h1 {
    font-family: var(--heading);
    font-weight: 700;
    font-size: clamp(34px, 8vw, 54px);
    line-height: 1.04;
    letter-spacing: -.03em;
    color: var(--ink);
}
.grad {
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.sub { margin-top: 14px; color: var(--mute); font-size: 17px; max-width: 46ch; }

/* ---------- card do formulário ---------- */
.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 18px 40px -28px rgba(11, 11, 18, .45);
    padding: 22px;
}

.campo { display: block; position: relative; }
.campo + .campo, .linha + .campo, .campo + .linha { margin-top: 16px; }
.rotulo {
    display: block;
    font-family: var(--heading);
    font-weight: 600;
    font-size: 13px;
    color: var(--ink);
    margin-bottom: 7px;
}

textarea, input, select {
    width: 100%;
    font-family: var(--body);
    font-size: 16px;
    color: var(--ink);
    background: var(--soft);
    border: 1.5px solid var(--line);
    border-radius: 14px;
    padding: 14px 15px;
    transition: border-color .15s, background .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 130px; line-height: 1.5; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%2374718A' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 16px center; padding-right: 42px; }

textarea:focus, input:focus, select:focus {
    outline: none;
    background: var(--surface);
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(77, 124, 255, .14);
}
::placeholder { color: #A3A2B2; }

.invalid { border-color: #E5484D; background: #FEF4F4; }

.contador { position: absolute; right: 4px; top: 0; font-size: 12px; color: var(--mute); }
.contador b { font-family: var(--heading); color: var(--text); }

.linha { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; align-items: start; }
.linha .campo + .campo { margin-top: 0; }

.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

/* ---------- botão ---------- */
.btn {
    width: 100%;
    margin-top: 20px;
    font-family: var(--heading);
    font-weight: 700;
    font-size: 17px;
    color: #fff;
    background: var(--grad);
    border: 0;
    border-radius: 14px;
    padding: 16px 20px;
    cursor: pointer;
    transition: transform .12s, box-shadow .2s, opacity .2s;
    box-shadow: 0 14px 26px -16px rgba(77, 124, 255, .9);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .6; cursor: default; transform: none; }
.btn-ghost { background: none; color: var(--blue); border: 1.5px solid var(--line); box-shadow: none; }

.aviso { margin-top: 12px; font-size: 13px; color: var(--mute); text-align: center; }

/* ---------- sucesso ---------- */
.sucesso { text-align: center; padding: 18px 6px 8px; }
.check {
    width: 56px; height: 56px; margin: 0 auto 16px;
    display: grid; place-items: center;
    font-size: 26px; color: #fff;
    background: var(--grad);
    border-radius: 50%;
}
.sucesso h2 { font-family: var(--heading); font-size: 26px; color: var(--ink); letter-spacing: -.02em; }
.sucesso p { margin-top: 8px; color: var(--mute); }
.sucesso .btn { margin-top: 22px; }

/* ---------- rodapé ---------- */
.rodape {
    margin-top: 28px;
    display: flex; justify-content: space-between; gap: 12px;
    font-size: 12.5px; color: var(--mute);
}

@media (max-width: 520px) {
    .wrap { padding-top: 20px; }
    .hero { margin: 32px 0 20px; }
    .linha { grid-template-columns: 1fr; }
    .card { padding: 18px; }
}