/* ========== PREMIUM DESIGN ========== */

@import url("https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700&family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,600&display=swap");

:root {
    --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
    --font-serif: "Source Serif 4", Georgia, serif;
    --color-primary: #0f766e;
    --color-primary-hover: #0d9488;
    --color-accent: #0891b2;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-bg: #f8fafc;
    --color-bg-warm: #f1f5f9;
    --color-card: #ffffff;
    --color-border: rgba(15, 23, 42, 0.08);
    --color-border-strong: rgba(15, 23, 42, 0.12);
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(15, 23, 42, 0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* BASE */

html {
    scroll-behavior: smooth;
}

html, body {
    margin: 0;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    background-image: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
    background-attachment: fixed;
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* NAVBAR */

.navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    padding: 16px 24px;
    display: flex;
    gap: 24px;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
    transition: var(--transition);
}

.navbar a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
}

.navbar a:hover {
    color: var(--color-primary-hover);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    padding: 8px 12px;
    color: var(--color-primary);
    transition: var(--transition);
}

.navbar .nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
}

.navbar #search {
    margin-left: auto;
}

/* CONTAINER */

.container {
    max-width: 1200px;
    margin: auto;
    padding: 48px 40px;
}

.container h1 {
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 2rem;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: 40px;
    line-height: 1.3;
}

.advanced-section h2 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: 28px;
}

/* GRID (index) */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

/* CARD (index) */

.card {
    background: var(--color-card);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-strong);
}

.card:hover::before {
    opacity: 1;
}

.card h2, .card h3 {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.15rem;
    margin-top: 0;
    margin-bottom: 12px;
}

.card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.card a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.card a:hover {
    color: var(--color-primary-hover);
    gap: 10px;
}

/* BLOG */

.blog-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.blog-status {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.blog-admin-hint {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.blog-admin-hint a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.blog-admin-hint a:hover {
    color: var(--color-primary-hover);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.blog-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-strong);
}

.blog-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-cover {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.blog-card-body {
    padding: 22px;
}

.blog-title {
    margin: 8px 0 10px;
    font-size: 1.25rem;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--color-text);
    font-weight: 700;
}

.blog-subtitle {
    margin: 0 0 14px;
    color: var(--color-text-muted);
    font-size: 0.98rem;
}

.blog-meta {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.blog-tag {
    font-size: 0.82rem;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: rgba(15, 118, 110, 0.06);
    color: var(--color-primary);
}

.blog-readmore {
    margin-top: 14px;
    color: var(--color-primary);
    font-weight: 600;
}

.blog-post-shell {
    max-width: 860px;
}

.blog-back {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.blog-post-cover {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    margin: 14px 0 18px;
}

.blog-post-title {
    margin: 10px 0 8px;
    font-size: 2rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.blog-post-subtitle {
    margin: 0 0 14px;
    color: var(--color-text-muted);
    font-family: var(--font-serif);
    font-size: 1.1rem;
}

.blog-post-content {
    margin-top: 18px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}

.blog-post-content h1,
.blog-post-content h2,
.blog-post-content h3 {
    font-family: var(--font-sans);
    color: var(--color-text);
}

.blog-post-content p,
.blog-post-content li {
    font-family: var(--font-serif);
}

.blog-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

/* BLOG ADMIN */

.blog-admin-note {
    color: var(--color-text-muted);
    max-width: 950px;
}

.admin-grid {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 24px;
    align-items: start;
    margin-top: 24px;
}

.admin-panel,
.admin-editor {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 22px;
}

.admin-label {
    display: block;
    font-size: 0.92rem;
    color: var(--color-text-muted);
    margin: 12px 0 8px;
}

.admin-input {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-family: var(--font-sans);
}

.admin-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.admin-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.admin-btn {
    border: 1px solid var(--color-border);
    background: linear-gradient(180deg, rgba(15, 118, 110, 0.12), rgba(15, 118, 110, 0.06));
    color: var(--color-primary);
    border-radius: 999px;
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.admin-btn:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-1px);
}

.admin-help {
    margin-top: 14px;
    color: var(--color-text-muted);
    font-size: 0.92rem;
    line-height: 1.5;
}

.editor {
    min-height: 240px;
    border-radius: var(--radius-md);
}

.admin-preview-title {
    margin-top: 18px;
    font-weight: 700;
    color: var(--color-text);
}

.blog-preview {
    margin-top: 12px;
}

/* LAYOUT PÁGINAS INTERNAS */

.layout {
    display: flex;
}

/* SIDEBAR */

.sidebar {
    width: 260px;
    background: var(--color-card);
    border-right: 1px solid var(--color-border);
    height: 100vh;
    position: fixed;
    padding: 28px;
    overflow: auto;
    box-shadow: var(--shadow-sm);
}

.sidebar h2 {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.sidebar a {
    display: block;
    text-decoration: none;
    color: var(--color-text-muted);
    margin: 6px 0;
    font-size: 14px;
    padding: 6px 0;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.sidebar a:hover {
    color: var(--color-primary);
    padding-left: 8px;
}

/* CONTENT */

.content {
    margin-left: 280px;
    padding: 48px 40px;
    max-width: 1100px;
}

.content h1 {
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 1.75rem;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.content p, .content li {
    font-family: var(--font-serif);
    font-size: 1rem;
}

/* SECTIONS */

.section {
    background: var(--color-card);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    margin-bottom: 28px;
    transition: var(--transition);
}

.section:hover {
    box-shadow: var(--shadow-md);
}

/* TÍTULOS */

.section h2 {
    color: var(--color-primary);
    font-weight: 600;
}

.section h3 {
    color: var(--color-accent);
    font-weight: 600;
}

/* LISTAS */

ul {
    line-height: 1.7;
}

/* TABELAS */

.table-wrapper {
    overflow-x: auto;
    margin: 20px 0;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    border: 1px solid var(--color-border);
    padding: 14px 16px;
}

th {
    background: var(--color-bg-warm);
    font-weight: 600;
    color: var(--color-text);
}

td {
    color: var(--color-text-muted);
}

/* CÓDIGO */

pre {
    background: var(--color-bg-warm);
    padding: 20px;
    border-radius: var(--radius-md);
    overflow: auto;
    border: 1px solid var(--color-border);
    font-family: "Consolas", "Monaco", monospace;
}

/* IMAGENS */

img {
    width: 100%;
    border-radius: var(--radius-md);
    margin-top: 12px;
    box-shadow: var(--shadow-sm);
}

/* PDF */

iframe {
    width: 100%;
    height: 800px;
    border: none;
}

/* SEARCH */

#search {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-family: var(--font-sans);
    transition: var(--transition);
}

#search:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.pdf-viewer {
    background: var(--color-card);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    margin-top: 32px;
}

.mindmap {
    margin-top: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

/* FOOTER */

.footer {
    margin-top: 80px;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    border-top: none;
    padding: 48px 24px;
    color: rgba(255, 255, 255, 0.9);
}

/* quando existir sidebar */

.layout + .footer {
    margin-left: 280px;
}

/* container interno */

.footer-container {
    max-width: 1100px;
    margin: auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.footer-left {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.95);
}

.footer-left strong {
    font-weight: 600;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #5eead4;
}

.footer-credit {
    margin-top: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* RESPONSIVO */

/* Tablet: layout sidebar */
@media (max-width: 900px) {

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
    }

    .content {
        margin-left: 0;
    }

    .layout {
        flex-direction: column;
    }

    .layout + .footer {
        margin-left: 0;
    }

}

/* Tablet: iframes */
@media (max-width: 768px) {
    iframe {
        height: 400px;
    }

    .content {
        padding: 24px 20px;
    }
}

/* Mobile */
@media (max-width: 600px) {

    .nav-toggle {
        display: block;
        margin-left: auto;
    }

    .navbar .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        padding-top: 16px;
        border-top: 1px solid var(--color-border);
    }

    .navbar .nav-links a,
    .navbar .nav-links input {
        padding: 14px 0;
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .navbar .nav-links #search {
        margin-left: 0;
    }

    .navbar.menu-open .nav-links {
        display: flex;
    }

    .navbar {
        flex-wrap: wrap;
        padding: 12px 16px;
    }

    .navbar a {
        font-size: 15px;
    }

    .container {
        padding: 20px 16px;
    }

    .card {
        padding: 20px;
    }

    .grid {
        gap: 16px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .footer {
        padding: 24px 16px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}