/* Reset e Variáveis */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --radius: 0.5rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    color: var(--gray-900);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary);
}

/* Main */
.main {
    min-height: calc(100vh - 200px);
    padding: 3rem 0;
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.version-badge {
    display: inline-block;
    background-color: var(--gray-100);
    color: var(--gray-700);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
}

/* Intro */
.intro {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-sm);
}

.intro p {
    font-size: 1.125rem;
    color: var(--gray-700);
    line-height: 1.8;
}

/* Docs List */
.docs-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.doc-card {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.doc-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.doc-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.doc-filename {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
    font-family: 'Courier New', monospace;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

/* Document Header */
.document-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.back-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

/* Document Content */
.document-content, .changelog-content {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 3rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.document-content h1,
.changelog-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--primary);
}

.document-content h2,
.changelog-content h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.document-content h3,
.changelog-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.document-content p,
.changelog-content p {
    margin-bottom: 1rem;
    color: var(--gray-700);
}

.document-content ul,
.document-content ol,
.changelog-content ul,
.changelog-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.document-content li,
.changelog-content li {
    margin-bottom: 0.5rem;
}

.document-content a,
.changelog-content a {
    color: var(--primary);
    text-decoration: underline;
}

.document-content a:hover,
.changelog-content a:hover {
    color: var(--primary-dark);
}

.document-content table,
.changelog-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.document-content th,
.changelog-content th {
    background-color: var(--gray-100);
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    border: 1px solid var(--gray-300);
}

.document-content td,
.changelog-content td {
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
}

.document-content hr,
.changelog-content hr {
    border: none;
    border-top: 1px solid var(--gray-300);
    margin: 2rem 0;
}

.document-content strong,
.changelog-content strong {
    font-weight: 700;
    color: var(--gray-900);
}

.document-content code,
.changelog-content code {
    background-color: var(--gray-100);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

/* Document Footer */
.document-footer {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.document-meta p {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.small-text {
    font-size: 0.8125rem;
}

/* Versions List */
.versions-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.version-card {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.version-card.version-current {
    border-color: var(--primary);
    border-width: 2px;
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.version-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.badge-current {
    background-color: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.version-meta p {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

/* Error Page */
.error-page {
    text-align: center;
    padding: 4rem 2rem;
}

.error-icon {
    font-size: 4rem;
    margin-bottom: 2rem;
}

.error-page h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.error-message {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    background-color: var(--white);
    border: 1px dashed var(--gray-300);
    border-radius: var(--radius);
}

.empty-state p {
    color: var(--gray-500);
    font-size: 1.125rem;
}

/* Footer */
.footer {
    background-color: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.footer p {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-small {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .docs-list {
        grid-template-columns: 1fr;
    }

    .document-content,
    .changelog-content {
        padding: 2rem 1.5rem;
    }

    .document-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}