/*
 * Além da Média — camada visual compartilhada do site público (Fluent / Windows 11).
 * Tokens em :root, tradução escura em :root[data-theme="dark"]. Landing, autenticação,
 * institucionais e fluxos de e-mail/senha consomem estas mesmas variáveis.
 */
:root {
    color-scheme: light;
    /* superfícies */
    --bg: #eef1f4;
    --bg-alt: #f0f2f5;
    --surface: #ffffff;
    --surface-alt: #f7f8fa;
    --surface-sunk: #e8eaee;
    --hover: #f2f4f7;
    /* bordas */
    --border: #e4e6ea;
    --border-strong: #d3d6db;
    --border-field: #d3d6db;
    /* tinta */
    --ink: #181c26;
    --ink-strong: #20242e;
    --ink-body: #4a4f5c;
    --ink-meta: #5c6370;
    --ink-faint: #8b909a; /* só placeholder e traço decorativo — nunca texto que precise ser lido */
    /* ação e estado */
    --primary: #2b5fb8;
    --primary-hover: #234f9c;
    --primary-solid: #2b5fb8;
    --primary-solid-hover: #234f9c;
    --on-primary: #ffffff;
    --tint-primary: #e8eefb;
    --success: #167d4e;
    --tint-success: #e7f4ee;
    --border-success: #b9ded0;
    --warning: #6d4a05;
    --tint-warning: #fdf3dd;
    --border-warning: #e6d3a4;
    --danger: #b3392b;
    --tint-danger: #fdeceb;
    --border-danger: #eccfcb;
    /* painéis escuros usados dentro do tema claro (mockup da Mesa) */
    --panel: #26282c;
    --panel-deep: #202225;
    --panel-border: #34363b;
    --panel-line: #2f333c;
    --panel-ink: #f3f4f6;
    --panel-body: #b0b3ba;
    --panel-meta: #979da5; /* 5,4:1 sobre #26282c — o #86898f do mockup reprova em AA */
    --accent-warm: #e2b04a;
    --accent-green: #5ecf9a;
    /* forma */
    --raio-controle: 7px;
    --raio-card: 10px;
    --raio-pilula: 99px;
    --sombra-card: 0 1px 2px rgba(20, 24, 32, .04);
    --sombra-flutuante: 0 14px 40px -18px rgba(24, 28, 38, .25);
    --touch-target-min: 44px;
    --header-height: 68px;
    --largura: 1160px;
    --fonte: 'Segoe UI Variable Text', 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #202225;
    --bg-alt: #26282c;
    --surface: #292b2f;
    --surface-alt: #2f3236;
    --surface-sunk: #232528;
    --hover: #32353a;
    --border: #3a3d43;
    --border-strong: #474b52;
    --border-field: #4a4e55;
    --ink: #f3f4f6;
    --ink-strong: #e8eaee;
    --ink-body: #cfd2d8;
    --ink-meta: #b0b3ba;
    --ink-faint: #86898f;
    --primary: #7fb0f5;
    --primary-hover: #a3c6f8;
    --primary-solid: #3f74cc;
    --primary-solid-hover: #4d82db;
    --on-primary: #ffffff;
    --tint-primary: rgba(127, 176, 245, .14);
    --success: #4cc38a;
    --tint-success: rgba(76, 195, 138, .12);
    --border-success: rgba(76, 195, 138, .38);
    --warning: #e2b04a;
    --tint-warning: rgba(226, 176, 74, .12);
    --border-warning: rgba(226, 176, 74, .38);
    --danger: #f0928a;
    --tint-danger: rgba(240, 146, 138, .12);
    --border-danger: rgba(240, 146, 138, .38);
    --panel: #26282c;
    --panel-deep: #1b1d20;
    --panel-border: #34363b;
    --panel-line: #2f333c;
    --sombra-card: 0 1px 2px rgba(0, 0, 0, .3);
    --sombra-flutuante: 0 14px 40px -18px rgba(0, 0, 0, .6);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: var(--bg); }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
    font-family: var(--fonte);
    background: var(--bg);
    color: var(--ink-strong);
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: inherit; font-style: normal; color: var(--ink); letter-spacing: -.015em; }
em { font-style: normal; }

a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--primary-hover); }

:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

svg { flex: none; }

.pular-conteudo {
    position: absolute; left: -999px; top: 8px; z-index: 100;
    background: var(--primary-solid); color: var(--on-primary);
    padding: 10px 14px; border-radius: var(--raio-controle); text-decoration: none;
}
.pular-conteudo:focus { left: 8px; }

.visually-hidden {
    position: absolute !important; width: 1px; height: 1px; overflow: hidden;
    clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; padding: 0; margin: -1px;
}

/* ---------- cabeçalho ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}
.site-header .barra {
    max-width: var(--largura); margin: 0 auto; padding: 0 24px;
    min-height: var(--header-height); display: flex; align-items: center; gap: 20px;
}
.logo, .wordmark {
    /* inline-block, não flex: o flex descartaria o espaço entre "Além da" e <em>Média</em> */
    display: inline-block;
    font-size: 1.4rem; font-weight: 600; letter-spacing: -.01em;
    color: var(--ink-strong); text-decoration: none; white-space: nowrap;
}
.logo:hover, .wordmark:hover { color: var(--ink-strong); }
.logo em, .wordmark em { color: var(--primary); font-weight: inherit; }
.logo-icon { display: none; }

.nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: var(--touch-target-min); min-height: var(--touch-target-min);
    background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: var(--raio-controle); color: var(--ink-body); cursor: pointer;
    margin-left: auto;
}
.nav-toggle:hover { background: var(--hover); color: var(--ink); }

.site-nav { margin-left: auto; }
.site-nav ul { list-style: none; display: flex; gap: 4px; align-items: center; }
.site-nav a {
    display: inline-flex; align-items: center; min-height: 40px; padding: 0 12px;
    color: var(--ink-body); text-decoration: none; border-radius: var(--raio-controle);
    font-size: .91rem; font-weight: 500;
}
.site-nav a:hover { background: var(--hover); color: var(--ink); }
.site-nav a.destaque { background: var(--primary-solid); color: var(--on-primary); }
.site-nav a.destaque:hover { background: var(--primary-solid-hover); color: var(--on-primary); }

.nav-actions { display: flex; align-items: center; gap: 10px; }
.login-link {
    display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px;
    color: var(--primary); font-size: .91rem; font-weight: 600;
    border-radius: var(--raio-controle); text-decoration: none;
}
.login-link:hover { background: var(--tint-primary); }

/* alternador de tema — header público, autenticação e portal do aluno */
.theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; flex: none;
    background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: var(--raio-controle); color: var(--ink-meta); cursor: pointer;
}
.theme-toggle:hover { background: var(--hover); color: var(--ink); }
.theme-toggle svg { width: 16px; height: 16px; }

@media (max-width: 860px) {
    .site-header .barra { padding: 0 16px; gap: 12px; }
    .site-nav {
        display: none; position: absolute; left: 0; right: 0; top: 100%;
        background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px 16px 16px;
        box-shadow: var(--sombra-flutuante); margin: 0;
    }
    .site-nav.aberto { display: block; }
    .site-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
    .site-nav a { width: 100%; min-height: var(--touch-target-min); }
    .nav-actions .button, .nav-actions .login-link { font-size: .88rem; }
}
@media (min-width: 861px) { .nav-toggle { display: none; } }

/* ---------- layout ---------- */
main { flex: 1; }
.secao { padding: 64px 24px; }
.secao > .interno, .interno { max-width: var(--largura); margin: 0 auto; }
.secao h1 { font-size: clamp(1.7rem, 3.5vw, 2.2rem); font-weight: 500; margin-bottom: 10px; }
.secao h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 500; margin-bottom: 10px; }
.secao .lead { color: var(--ink-meta); max-width: 62ch; margin-bottom: 26px; }
p + p { margin-top: 12px; }
.estreito { max-width: 760px; }
.prosa { color: var(--ink-body); }
.prosa h2 { margin-top: 34px; font-size: 1.3rem; font-weight: 600; }
.prosa h3 { margin-top: 22px; margin-bottom: 6px; font-size: 1.05rem; font-weight: 600; }
.prosa ul, .prosa ol { margin: 8px 0 8px 24px; }
.prosa li + li { margin-top: 4px; }
.prosa a { font-weight: 500; }

/* ---------- botões ---------- */
.btn, .button {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: var(--touch-target-min); padding: 0 22px;
    border: 1px solid var(--border-strong); border-radius: var(--raio-controle);
    background: var(--surface); color: var(--ink-strong);
    font-family: inherit; font-weight: 600; font-size: 1rem; line-height: 1.2;
    text-decoration: none; cursor: pointer; box-shadow: var(--sombra-card);
    transition: background .15s, border-color .15s;
}
.btn:hover, .button:hover { background: var(--hover); color: var(--ink); }
.btn-primario, .button-primary {
    background: var(--primary-solid); border-color: var(--primary-solid); color: var(--on-primary);
}
.btn-primario:hover, .button-primary:hover {
    background: var(--primary-solid-hover); border-color: var(--primary-solid-hover); color: var(--on-primary);
}
.btn-secundario, .button-outline { background: var(--surface); color: var(--primary); border-color: var(--primary); }
.btn-secundario:hover, .button-outline:hover { background: var(--primary-solid); border-color: var(--primary-solid); color: var(--on-primary); }
.button-light { background: var(--surface); color: var(--primary); border-color: var(--surface); }
.button-light:hover { background: var(--surface-alt); color: var(--primary-hover); }
.button-small { min-height: 40px; padding: 0 18px; font-size: .91rem; }
.btn-desabilitado { background: var(--surface-alt); color: var(--ink-meta); border-color: var(--border); box-shadow: none; }
.btn:disabled, .button:disabled { opacity: .6; cursor: progress; }
.btn-largo { width: 100%; }
.text-link { color: var(--primary); font-weight: 600; text-decoration: none; border-bottom: 1.5px solid var(--primary); padding-bottom: 2px; }
.text-link:hover { color: var(--primary-hover); border-bottom-color: var(--primary-hover); }

/* ---------- mídia e cards ---------- */
.video-wrap { border: 1px solid var(--border); border-radius: var(--raio-card); overflow: hidden; background: var(--panel-deep); }
.video-wrap video { display: block; width: 100%; height: auto; max-width: 100%; }
.video-legenda { font-size: .85rem; color: var(--ink-meta); margin-top: 8px; }

.grade { display: grid; gap: 16px; }
.grade-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grade-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--raio-card); padding: 22px; box-shadow: var(--sombra-card);
}
.card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
.card p { color: var(--ink-meta); font-size: .95rem; }

.passos { list-style: none; display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.passos li { border-top: 2px solid var(--primary); padding-top: 18px; }
.passos .num { display: block; color: var(--primary); font-size: .81rem; margin-bottom: 8px; }
.passos strong { display: block; margin-bottom: 6px; font-size: 1.05rem; color: var(--ink-strong); }
.passos span.desc { color: var(--ink-meta); font-size: .93rem; }

/* ---------- planos ---------- */
.plano { display: flex; flex-direction: column; }
.plano .preco { font-size: 2rem; font-weight: 500; margin: 6px 0 4px; color: var(--ink); }
.plano ul { list-style: none; margin: 14px 0 22px; color: var(--ink-body); display: grid; gap: 10px; }
.plano li { display: flex; gap: 10px; font-size: .93rem; }
.plano .btn { margin-top: auto; }
.plano.destaque { border-color: var(--primary); border-width: 2px; }

/* ---------- formulários ---------- */
.form { display: grid; gap: 16px; max-width: 560px; }
.campo { display: grid; gap: 6px; }
.campo label { font-weight: 600; font-size: .82rem; color: var(--ink-body); }
.campo .dica { color: var(--ink-meta); font-size: .8rem; line-height: 1.45; }
input[type="text"], input[type="email"], input[type="password"], textarea, select {
    width: 100%; min-height: var(--touch-target-min); padding: 11px 13px;
    background: var(--surface); color: var(--ink-strong);
    border: 1px solid var(--border-field); border-radius: var(--raio-controle);
    font-family: inherit; font-size: .91rem;
}
::placeholder { color: var(--ink-faint); opacity: 1; }
textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
input:focus, textarea:focus, select:focus {
    border-color: var(--primary); outline: 0; box-shadow: 0 0 0 3px var(--tint-primary);
}
.campo-senha { position: relative; }
.campo-senha input { padding-right: 76px; }
.campo-senha .mostrar {
    position: absolute; right: 7px; top: 50%; transform: translateY(-50%);
    min-height: 32px; padding: 0 10px; background: transparent; border: 0;
    color: var(--primary); border-radius: 6px; cursor: pointer;
    font-family: inherit; font-size: .78rem; font-weight: 600;
}
.senha-label-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.checkbox { display: flex; align-items: center; gap: 10px; min-height: var(--touch-target-min); color: var(--ink-meta); font-size: .82rem; }
.checkbox input { width: 20px; height: 20px; accent-color: var(--primary-solid); }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.aviso {
    padding: 12px 14px; border-radius: var(--raio-controle);
    border: 1px solid var(--border); background: var(--surface-alt); color: var(--ink-body); font-size: .9rem;
}
.aviso[hidden] { display: none; }
.aviso-erro, .aviso.erro { border-color: var(--border-danger); background: var(--tint-danger); color: var(--danger); }
.aviso-ok { border-color: var(--border-success); background: var(--tint-success); color: var(--success); }
.aviso-info { border-color: var(--border-warning); background: var(--tint-warning); color: var(--warning); }
.linha-links { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: .88rem; color: var(--ink-meta); }

.card-auth {
    max-width: 440px; margin: 40px auto; padding: 36px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; box-shadow: var(--sombra-flutuante);
}
.card-auth h1 { font-size: 1.7rem; font-weight: 500; margin-bottom: 6px; }
.card-auth .lead { margin-bottom: 24px; color: var(--ink-meta); font-size: .9rem; }

/* ---------- banner de saúde ---------- */
.banner-saude {
    background: var(--tint-warning); color: var(--warning);
    border-bottom: 1px solid var(--border-warning);
    text-align: center; padding: 9px 16px; font-size: .85rem;
}
.banner-saude[hidden] { display: none; }

/* ---------- rodapé ---------- */
.site-footer {
    border-top: 1px solid var(--border); padding: 36px 24px;
    color: var(--ink-meta); font-size: .82rem; background: var(--bg);
}
.site-footer .interno { display: grid; gap: 12px; }
.site-footer nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 20px; }
.site-footer a { color: var(--ink-meta); text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

/* ---------- tabelas (privacidade / termos) ---------- */
.tabela-wrap, .prosa table { overflow-x: auto; }
.prosa table { width: 100%; border-collapse: collapse; margin: 14px 0; display: block; }
.prosa th, .prosa td { text-align: left; padding: 9px 11px; border-bottom: 1px solid var(--border); vertical-align: top; }
.prosa th { color: var(--ink-strong); font-weight: 600; }
.prosa td { color: var(--ink-meta); }
.prosa code {
    background: var(--surface-alt); border: 1px solid var(--border);
    padding: 1px 6px; border-radius: 4px; font-size: .9em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- abas (cadastro Professor / Aluno) ---------- */
.abas {
    display: flex; gap: 3px; margin: 18px 0 24px; padding: 3px;
    border: 1px solid var(--border-strong); border-radius: 8px; background: var(--surface-sunk);
}
.abas .aba {
    flex: 1; background: transparent; border: 0; border-radius: 6px;
    color: var(--ink-meta); padding: 9px 14px; font-family: inherit; font-weight: 600;
    font-size: .88rem; cursor: pointer;
}
.abas .aba:hover { color: var(--ink); }
.abas .aba.ativa { background: var(--surface); color: var(--ink); box-shadow: var(--sombra-card); }
.abas .aba:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 6px; }