/* ============================================================
   Tributação Online — tributacaonline.com.br
   Paleta: Azul-marinho (#14306e) e verde-financeiro (#1f9d63) — sóbrio e próspero
   Layout: Corporativo/Institucional — limpo, hierárquico, números em mono
   Fontes: Sen (títulos) / Work Sans (corpo) / IBM Plex Mono (botões, tags e cifras)
   ============================================================ */

:root {
    --cor-primaria: #14306e;
    --cor-secundaria: #1f9d63;
    --cor-fundo: #f5f7fb;
    --cor-texto: #1d2430;
    --cor-fundo-footer: #0e2250;
    --cor-texto-footer: #eef2fa;
    --cor-borda: #dbe2ee;
    --fonte-titulo: "Sen", "Segoe UI", sans-serif;
    --fonte-corpo: "Work Sans", "Segoe UI", Arial, sans-serif;
    --fonte-botao: "IBM Plex Mono", "Courier New", monospace;
}

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

body {
    font-family: var(--fonte-corpo);
    font-size: 1.04rem;
    background: var(--cor-fundo);
    color: var(--cor-texto);
    line-height: 1.7;
}

.container { width: 90%; max-width: 1120px; margin: 0 auto; }

a { color: var(--cor-primaria); }
strong { color: #0e2250; }

/* ---------- Cabeçalho ---------- */
.site-header {
    background: var(--cor-primaria);
    padding: .9rem 0;
}
.site-header .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.ledger-brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; }
.brand-seal {
    font-family: var(--fonte-titulo);
    font-weight: 800;
    font-size: 1.25rem;
    color: #0e2250;
    background: var(--cor-secundaria);
    width: 2.1rem; height: 2.1rem;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px;
}
.brand-words {
    font-family: var(--fonte-titulo);
    font-weight: 700;
    color: #fff;
    font-size: 1.3rem;
}
.brand-words em, .footer-sig em { color: #5fd6a4; font-style: normal; }
.main-navigation ul { list-style: none; display: flex; gap: 1.05rem; }
.main-navigation a {
    color: #c3cfe8;
    text-decoration: none;
    font-size: .92rem;
}
.main-navigation a:hover { color: #5fd6a4; }

/* ---------- Hero ---------- */
.hero {
    background:
        radial-gradient(680px 340px at 92% -15%, rgba(31,157,99,.28), transparent 62%),
        linear-gradient(112deg, #0e2250 0%, var(--cor-primaria) 55%, #1b4185 100%);
    color: #fff;
    padding: 5rem 0 4.7rem;
}
.hero-badge {
    display: inline-block;
    font-family: var(--fonte-botao);
    font-size: .8rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: #a8e9c9;
    border: 1px solid rgba(95,214,164,.5);
    border-radius: 6px;
    padding: .28rem .9rem;
    margin-bottom: 1.25rem;
}
.hero h1 {
    font-family: var(--fonte-titulo);
    font-weight: 800;
    font-size: 2.42rem;
    line-height: 1.24;
    max-width: 810px;
    margin-bottom: 1.1rem;
}
.hero-subtitle { font-size: 1.1rem; max-width: 770px; color: #ccd7ef; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.tax-btn {
    display: inline-block;
    padding: .78rem 1.7rem;
    font-family: var(--fonte-botao);
    font-weight: 600;
    font-size: .92rem;
    text-decoration: none;
    border-radius: 8px;
    transition: transform .18s ease, box-shadow .18s ease;
}
.tax-solid { background: var(--cor-secundaria); color: #062d1b; box-shadow: 0 6px 16px rgba(31,157,99,.35); }
.tax-line { border: 1.5px solid rgba(255,255,255,.55); color: #fff; }
.tax-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 24px rgba(0,0,0,.28); }

/* ---------- Conteúdo ---------- */
.main-content { padding: 3.4rem 0 3rem; }
.content-section { margin-bottom: 3rem; }
.content-section > h2 {
    font-family: var(--fonte-titulo);
    font-weight: 700;
    font-size: 1.58rem;
    color: var(--cor-primaria);
    margin-bottom: 1.1rem;
    padding-bottom: .5rem;
    border-bottom: 3px solid var(--cor-secundaria);
    display: inline-block;
}
.content-section p { margin-bottom: 1rem; max-width: 860px; }

/* Regimes — cards institucionais */
.regime-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.15rem; margin-bottom: 1rem; }
.regime-card {
    background: #fff;
    border: 1px solid var(--cor-borda);
    border-top: 5px solid var(--cor-primaria);
    border-radius: 12px;
    padding: 1.45rem 1.3rem;
    transition: transform .18s ease, box-shadow .18s ease;
}
.regime-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(20,48,110,.12); }
.regime-tag {
    display: inline-block;
    font-family: var(--fonte-botao);
    font-size: .78rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #062d1b;
    background: #c9f2dd;
    border-radius: 5px;
    padding: .2rem .6rem;
    margin-bottom: .65rem;
}
.regime-card h3 { font-family: var(--fonte-titulo); font-size: 1.15rem; color: #0e2250; margin-bottom: .45rem; }
.regime-card p { font-size: .95rem; color: #3d4757; margin: 0; }

/* Impostos — dossiês */
.tax-list { list-style: none; max-width: 860px; }
.tax-list li {
    background: #fff;
    border: 1px solid var(--cor-borda);
    border-radius: 10px;
    padding: 1.05rem 1.35rem 1.05rem 2.7rem;
    margin-bottom: .75rem;
    position: relative;
    color: #3d4757;
}
.tax-list li::before {
    content: "§";
    position: absolute;
    left: 1.05rem; top: 1rem;
    font-family: var(--fonte-titulo);
    font-weight: 800;
    color: var(--cor-secundaria);
    font-size: 1.1rem;
}
.tax-list strong { font-family: var(--fonte-titulo); color: #0e2250; }

/* Rotina fiscal — fluxo numerado */
.fiscal-flow { list-style: none; counter-reset: ciclo; max-width: 860px; }
.fiscal-flow li {
    counter-increment: ciclo;
    background: #fff;
    border: 1px solid var(--cor-borda);
    border-radius: 10px;
    padding: 1.1rem 1.3rem 1.1rem 4.5rem;
    margin-bottom: .8rem;
    position: relative;
    color: #3d4757;
}
.fiscal-flow li::before {
    content: counter(ciclo, decimal-leading-zero);
    position: absolute;
    left: 1.15rem; top: 1.1rem;
    font-family: var(--fonte-botao);
    font-weight: 700;
    color: var(--cor-primaria);
    background: #e7edf9;
    border-radius: 7px;
    padding: .22rem .5rem;
}
.fiscal-flow strong { font-family: var(--fonte-titulo); color: #0e2250; }

/* FAQ */
.faq-files { max-width: 860px; }
.faq-files details {
    background: #fff;
    border: 1px solid var(--cor-borda);
    border-radius: 10px;
    margin-bottom: .7rem;
    padding: 1rem 1.3rem;
}
.faq-files summary { font-family: var(--fonte-titulo); font-weight: 600; color: #0e2250; cursor: pointer; }
.faq-files details[open] { border-color: var(--cor-secundaria); }
.faq-files details[open] summary { color: #17734a; margin-bottom: .5rem; }
.faq-files p { margin: 0; font-size: .97rem; }

/* ---------- Rodapé ---------- */
.site-footer {
    background: var(--cor-fundo-footer);
    color: var(--cor-texto-footer);
    padding: 2.8rem 0 1.4rem;
    margin-top: 2rem;
}
.footer-ledger { display: grid; grid-template-columns: 1.7fr 1fr 1.5fr; gap: 2rem; margin-bottom: 1.8rem; }
.footer-sig {
    display: block;
    font-family: var(--fonte-titulo);
    font-weight: 700;
    font-size: 1.35rem;
    color: #fff;
    margin-bottom: .5rem;
}
.footer-note p { color: #a9b8d8; font-size: .93rem; max-width: 330px; }
.site-footer h4 {
    font-family: var(--fonte-botao);
    font-size: .8rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: #5fd6a4;
    margin-bottom: .7rem;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: .45rem; }
.site-footer a { color: #c3cfe8; text-decoration: none; font-size: .92rem; }
.site-footer a:hover { color: #5fd6a4; }
.footer-closing {
    border-top: 1px solid rgba(255,255,255,.12);
    padding-top: 1.1rem;
    text-align: center;
    font-size: .84rem;
    color: #8ea0c6;
}

/* ---------- WhatsApp flutuante ---------- */
.whatsapp-float {
    position: fixed;
    bottom: 1.6rem;
    right: 1.6rem;
    width: 3.4rem;
    height: 3.4rem;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(0,0,0,.3);
    z-index: 999;
    transition: transform .18s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }