/* ============================================================
   Real Contábil - Calculadora de Taxas de Cartão
   Paleta sóbria: azul escuro, cinza e branco.
   ============================================================ */

:root {
    --azul-escuro: #0b2545;
    --azul: #13315c;
    --azul-claro: #1f4e8c;
    --cinza-900: #1f2937;
    --cinza-700: #374151;
    --cinza-500: #6b7280;
    --cinza-300: #d1d5db;
    --cinza-100: #f3f4f6;
    --cinza-50:  #f9fafb;
    --branco: #ffffff;
    --verde: #0f766e;
    --verde-claro: #ecfdf5;
    --wpp: #25d366;
    --wpp-escuro: #128c7e;
    --sombra: 0 4px 14px rgba(11, 37, 69, 0.08);
    --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--cinza-900);
    background: var(--cinza-50);
    line-height: 1.5;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ----------- Cabeçalho ----------- */
.site-header {
    background: #f5f5f5;
    color: var(--cinza-900);
    padding: 18px 0;
    border-bottom: 1px solid #e5e7eb;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}
.brand-logo {
    height: 64px;
    width: auto;
    display: block;
}
.brand-text h1 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--azul-escuro);
    letter-spacing: 0.2px;
}
.header-nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.header-nav a {
    color: var(--azul-escuro);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}
.header-nav a:hover {
    text-decoration: underline;
}

/* ----------- Hero ----------- */
.hero {
    background: linear-gradient(135deg, var(--azul-escuro), var(--azul));
    color: var(--branco);
    padding: 48px 0 64px;
    text-align: center;
}
.hero h2 {
    margin: 0 0 12px;
    font-size: 28px;
    font-weight: 700;
}
.hero p {
    margin: 0 auto;
    max-width: 720px;
    color: #cbd5e1;
    font-size: 16px;
}

/* ----------- Cards ----------- */
main {
    padding: 32px 20px 60px;
}
.card {
    background: var(--branco);
    border-radius: var(--radius);
    box-shadow: var(--sombra);
    padding: 28px;
    margin-bottom: 28px;
    border: 1px solid var(--cinza-100);
}
.card h3 {
    margin: 0 0 18px;
    color: var(--azul-escuro);
    font-size: 20px;
}

/* ----------- Formulário ----------- */
.form-card {
    margin-top: -40px;
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px 18px;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--cinza-700);
}
.field input,
.field select {
    padding: 10px 12px;
    border: 1px solid var(--cinza-300);
    border-radius: 8px;
    background: var(--branco);
    font-size: 15px;
    color: var(--cinza-900);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus,
.field select:focus {
    outline: none;
    border-color: var(--azul-claro);
    box-shadow: 0 0 0 3px rgba(31, 78, 140, 0.15);
}

.form-actions {
    margin-top: 22px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.btn {
    display: inline-block;
    padding: 11px 22px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s, transform 0.05s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
    background: var(--azul-escuro);
    color: var(--branco);
}
.btn-primary:hover { background: var(--azul-claro); }
.btn-ghost {
    background: transparent;
    color: var(--cinza-700);
    border-color: var(--cinza-300);
}
.btn-ghost:hover { background: var(--cinza-100); }

/* ----------- Destaque da melhor oferta ----------- */
.best-offer {
    background: linear-gradient(135deg, #0f766e, #0d9488);
    color: var(--branco);
    border: none;
}
.best-offer h3 {
    color: var(--branco);
    margin-bottom: 6px;
    font-size: 16px;
    opacity: 0.9;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.best-offer .best-title {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 6px;
}
.best-offer .best-value {
    font-size: 28px;
    font-weight: 700;
    margin: 4px 0 0;
}
.best-offer .best-meta {
    margin-top: 8px;
    font-size: 14px;
    opacity: 0.9;
}

/* ----------- Tabela de ranking ----------- */
.table-card { padding: 0; overflow: hidden; }
.table-header {
    padding: 22px 24px 12px;
    border-bottom: 1px solid var(--cinza-100);
}
.table-header h3 { margin-bottom: 4px; }
.muted { color: var(--cinza-500); font-size: 14px; margin: 0; }
.small { font-size: 12px; }

.table-wrapper {
    overflow-x: auto;
}
.ranking-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 780px;
}
.ranking-table th,
.ranking-table td {
    padding: 12px 14px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid var(--cinza-100);
}
.ranking-table thead th {
    background: var(--cinza-50);
    color: var(--cinza-700);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}
.ranking-table tbody tr:hover { background: var(--cinza-50); }
.ranking-table tbody tr.best-row {
    background: var(--verde-claro);
    font-weight: 600;
}
.ranking-table tbody tr.best-row:hover { background: #d1fae5; }
.ranking-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--cinza-100);
    color: var(--cinza-700);
    font-weight: 700;
    font-size: 12px;
}
.rank-badge.gold   { background: #fef3c7; color: #92400e; }
.rank-badge.silver { background: #e5e7eb; color: #374151; }
.rank-badge.bronze { background: #fed7aa; color: #9a3412; }

.disclaimer {
    padding: 12px 24px 20px;
    font-size: 12px;
    color: var(--cinza-500);
    margin: 0;
}

/* ----------- Estado vazio ----------- */
.empty-state {
    border-left: 4px solid var(--azul-claro);
}
.empty-state code {
    background: var(--cinza-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

/* ----------- Seção CTA ----------- */
.cta-card {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 28px;
    align-items: center;
    background: var(--cinza-50);
    border: 1px solid var(--cinza-100);
}
.cta-text h3 { margin-bottom: 10px; }
.cta-text p { color: var(--cinza-700); margin: 0 0 14px; }
.cta-list {
    padding-left: 18px;
    margin: 0;
    color: var(--cinza-700);
}
.cta-list li { margin-bottom: 6px; }
.cta-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}
.btn-whatsapp {
    background: var(--wpp);
    color: var(--branco);
    font-size: 16px;
    padding: 14px 22px;
    width: 100%;
    text-align: center;
}
.btn-whatsapp:hover { background: var(--wpp-escuro); }

/* ----------- Rodapé ----------- */
.site-footer {
    background: var(--branco);
    color: #666;
    padding: 28px 0;
    text-align: center;
    font-size: 13px;
    border-top: 1px solid #e5e7eb;
}
.site-footer .footer-line {
    margin: 6px 0;
    line-height: 1.6;
}

/* ----------- Responsivo ----------- */
@media (max-width: 720px) {
    .hero { padding: 36px 0 52px; }
    .hero h2 { font-size: 22px; }
    .form-card { margin-top: -32px; }
    .card { padding: 20px; }
    .cta-card {
        grid-template-columns: 1fr;
    }
    .best-offer .best-value { font-size: 24px; }
    .header-nav { display: none; }
    .brand {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .brand-logo { height: 52px; }
    .brand-text h1 { font-size: 16px; }
}