@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
    /* paleta: as 6 cores que você trouxe (5 + branco), tudo derivado daqui via color-mix() */
    --bg: #FFFFFF;         /* fundo geral da página */
    --paper-raised: #F2F2F2; /* conteúdo "quase branco", cards, blocos, inputs */
    --ink: #011126;        /* texto principal e fundo do topo/footer, navy quase preto */
    --muted: #777E8C;      /* texto secundário, cinza-azulado */
    --accent: #0669BF;     /* azul principal, links, botões, tags */
    --accent-deep: #033F73; /* azul escuro, hover, ênfase */

    /* tons derivados, não contam como cor nova, só variações da paleta acima */
    --line: color-mix(in srgb, var(--muted) 35%, white);
    --accent-soft: color-mix(in srgb, var(--accent) 12%, white);
    --accent-ink: var(--accent-deep);
    --on-dark: color-mix(in srgb, white 92%, var(--ink));
    --on-dark-muted: color-mix(in srgb, white 55%, var(--ink));

    --font-display: 'Space Grotesk', sans-serif;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    line-height: 1.5;
}

a { color: inherit; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* --- Header --- */

.main-header {
    background: var(--ink);
    border-bottom: 1px solid var(--accent-deep);
}

@media (min-width: 600px) {
    .main-header {
        position: sticky;
        top: 0;
        z-index: 10;
    }
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--on-dark);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 1.05rem;
    color: var(--on-dark);
}

.logo-mark {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
}

.logo-mark img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.main-nav {
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
}

.main-nav a {
    text-decoration: none;
    color: var(--on-dark-muted);
    padding-bottom: 2px;
    border-bottom: 1px solid transparent;
    transition: color 0.15s, border-color 0.15s;
}

.main-nav a:hover {
    color: var(--on-dark);
    border-color: var(--accent);
}

/* --- Layout de conteúdo (laterais ficam a cargo do Google Auto ads) --- */

.page-layout {
    max-width: 760px;
    margin: 0 auto;
    padding: 24px;
}

.ad-placeholder {
    border: 1px dashed var(--line);
    border-radius: var(--radius);
    background: var(--paper-raised);
    color: var(--muted);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 12px;
    height: 240px;
}

.horizontal-ad .ad-placeholder {
    height: 90px;
    margin: 8px 0 28px;
}

/* --- Hero --- */

.welcome-hero {
    padding: 8px 0 20px;
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent-ink);
    margin: 0 0 10px;
}

.welcome-hero h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 2.2rem;
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin: 0 0 10px;
    max-width: 16ch;
}

.hero-sub {
    color: var(--muted);
    font-size: 1rem;
    max-width: 46ch;
    margin: 0 0 22px;
}

.hero-demo {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 20px;
}

.hero-demo-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 16px;
}

.hero-demo-row label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--muted);
}

.hero-demo-row input {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--bg);
    color: var(--ink);
}

.hero-demo-row input:focus {
    border-color: var(--accent);
}

.hero-demo-result {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    border-top: 1px dashed var(--line);
    padding-top: 14px;
}

.hero-demo-result span {
    font-size: 0.8rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.hero-demo-result strong {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    color: var(--accent-ink);
}

/* --- Diretório de ferramentas --- */

.tools-directory {
    display: flex;
    flex-direction: column;
    gap: 36px;
    margin-top: 8px;
}

.category-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    padding-bottom: 8px;
    margin-bottom: 15px;
}

.category-head h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: -0.005em;
    margin: 0;
}

.category-count {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--muted);
}

.tools-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.tool-link-card {
    position: relative;
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px;
    padding-top: 34px;
    text-decoration: none;
    color: var(--ink);
    transition: border-color 0.15s, transform 0.15s;
}

.tool-link-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.tool-tag {
    position: absolute;
    top: 14px;
    left: 18px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    background: var(--accent-soft);
    color: var(--accent-ink);
    padding: 2px 7px;
    border-radius: 4px;
}

.tool-link-card h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 6px;
}

.tool-link-card p {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.45;
    margin: 0;
}

/* --- Página de ferramenta: breadcrumb --- */

.breadcrumb {
    font-size: 0.8rem;
    color: var(--muted);
    margin-bottom: 14px;
}

.breadcrumb a {
    text-decoration: none;
    color: var(--muted);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb .current {
    color: var(--ink);
}

/* --- Página de ferramenta: intro --- */

.tool-intro h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.9rem;
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin: 0 0 12px;
}

.tool-intro p {
    color: var(--muted);
    max-width: 68ch;
    margin: 0 0 24px;
}

/* --- Calculadora --- */

.calculator-card {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 22px;
    margin-bottom: 20px;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 18px;
}

.calc-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--muted);
}

.calc-field-inline {
    display: flex;
    gap: 8px;
}

.calc-field input,
.calc-field select {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    padding: 10px 11px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--bg);
    color: var(--ink);
    width: 100%;
}

.calc-field select {
    font-family: var(--font-sans);
    max-width: 110px;
}

.calc-field input:focus,
.calc-field select:focus {
    border-color: var(--accent);
}

.calc-submit {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.92rem;
    background: var(--accent);
    color: #FFFFFF;
    border: none;
    border-radius: 8px;
    padding: 12px 22px;
    cursor: pointer;
    transition: background 0.15s;
}

.calc-submit:hover {
    background: var(--accent-deep);
}

/* --- Resultado --- */

.result-block {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 22px;
    margin-bottom: 20px;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 18px;
}

.result-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.result-item span {
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.result-item strong {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--ink);
}

.result-item.destaque strong {
    color: var(--accent-deep);
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.result-table th,
.result-table td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--line);
}

.result-table th {
    color: var(--muted);
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
}

.result-table td:last-child,
.result-table th:last-child {
    font-family: var(--font-mono);
}

/* --- Conteúdo de apoio --- */

.support-content h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.25rem;
    margin: 32px 0 12px;
}

.support-content p {
    color: var(--ink);
    max-width: 70ch;
    margin: 0 0 14px;
}

.support-content ul {
    max-width: 70ch;
    margin: 0 0 14px;
    padding-left: 20px;
    color: var(--ink);
}

.support-content li {
    margin-bottom: 6px;
}

.support-content code {
    font-family: var(--font-mono);
    background: var(--paper-raised);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

/* --- FAQ --- */

.faq-list {
    margin: 12px 0 32px;
}

.faq-item {
    border-bottom: 1px solid var(--line);
    padding: 14px 0;
}

.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::before {
    content: '+ ';
    color: var(--accent);
    font-family: var(--font-mono);
}

.faq-item[open] summary::before {
    content: '– ';
}

.faq-item p {
    color: var(--muted);
    margin: 10px 0 0;
    max-width: 65ch;
}

/* --- Related tools --- */

.related-tools h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.1rem;
    margin: 0 0 14px;
}

/* --- Página de ferramenta: responsividade --- */

@media (max-width: 600px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }
    .result-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Formulário de contato --- */

.contact-card {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 22px;
    margin-bottom: 20px;
}

.contact-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 16px;
}

.contact-field input,
.contact-field textarea {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--bg);
    color: var(--ink);
    width: 100%;
    resize: vertical;
}

.contact-field input:focus,
.contact-field textarea:focus {
    border-color: var(--accent);
}

.contact-note {
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: 14px;
}

.contact-note a {
    color: var(--accent);
    text-decoration: none;
}

.contact-note a:hover {
    color: var(--accent-deep);
}

/* --- Histórico de cálculos (localStorage) --- */

.history-toggle {
    margin-bottom: 12px;
}

.history-button {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.85rem;
    background: var(--accent-soft);
    border: 1px solid var(--accent-soft);
    border-radius: 8px;
    padding: 9px 16px;
    color: var(--accent-deep);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.history-button:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #FFFFFF;
}

.history-panel {
    background: var(--paper-raised);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 16px 18px;
    margin-bottom: 20px;
}

.history-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 10px;
}

.history-clear {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    text-transform: none;
    letter-spacing: normal;
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    padding: 0;
}

.history-clear:hover {
    color: var(--accent-deep);
}

.history-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-list li {
    font-size: 0.85rem;
    color: var(--ink);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
}

.history-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.history-list .history-dates {
    font-family: var(--font-mono);
    color: var(--muted);
    font-size: 0.78rem;
    display: block;
}

.history-empty {
    font-size: 0.85rem;
    color: var(--muted);
}

/* --- Footer --- */

.main-footer {
    background: var(--ink);
    border-top: 1px solid var(--accent-deep);
}

.main-footer p {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 24px 8px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--on-dark-muted);
}

.footer-links {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 24px;
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 16px;
    font-size: 0.78rem;
}

.footer-links a {
    color: var(--on-dark-muted);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--on-dark);
}

/* --- Responsividade --- */

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}


@media (max-width: 600px) {
    .header-container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    .welcome-hero h1 {
        font-size: 1.6rem;
        max-width: none;
    }
    .hero-demo-row {
        grid-template-columns: 1fr;
    }
    .tools-list {
        grid-template-columns: 1fr;
    }
}