/* ==========================================================================
   Maolabs.blog — CSS puro, zero build
   ========================================================================== */

/* --- Reset mínimo --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* --- Variáveis de Cor (Extraídas do Logo) --- */
:root {
    --primary: #0092ff;
    --primary-hover: #0076ce;
    --secondary: #d4b400;
    --accent: #226b00;
    --text-main: #374151;
    --text-bold: #111827;
    --text-muted: #6b7280;
    --text-faint: #9ca3af;
    --bg-main: #fafafa;
    --bg-surface: #ffffff;
    --border-light: #f3f4f6;
    --border-input: #e5e7eb;
    --code-color: #c026d3;
    --code-bg: #fae8ff;
    --blockquote-border: #e5e7eb;
}

/* --- Tema Escuro (Classe .dark) --- */
.dark {
    --primary: #3eaaff;
    --primary-hover: #6fc0ff;
    --secondary: #f0ca00;
    --text-main: #d1d5db;
    --text-bold: #f3f4f6;
    --text-muted: #9ca3af;
    --text-faint: #6b7280;
    --bg-main: #111827;
    --bg-surface: #1f2937;
    --border-light: #374151;
    --border-input: #4b5563;
    --code-color: #e879f9;
    --code-bg: #2e1065;
    --blockquote-border: #4b5563;
}

/* --- Base --- */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, .brand {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-bold);
    transition: color 0.3s ease;
}

a {
    color: inherit;
    text-decoration: none;
}

/* --- Skip link (acessibilidade) --- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    background: var(--primary);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 0.5rem 0.5rem;
    font-weight: 600;
    z-index: 100;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

/* --- Só para screen readers --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- Focus visível (acessibilidade) --- */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* --- Layout --- */
.container {
    max-width: 42rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- Header --- */
.header {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-surface);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-bold);
    transition: opacity 0.2s;
}

.brand:hover {
    opacity: 0.8;
}

.logo {
    height: 2.5rem; /* Um pouco maior para destaque */
    width: auto;
    display: block;
}

.brand .dot {
    color: var(--primary);
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

/* --- Theme Toggle --- */
.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.theme-toggle:hover {
    color: var(--primary);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Mostra Sol no Dark, Lua no Light */
.dark .theme-toggle .sun { display: block; }
.dark .theme-toggle .moon { display: none; }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }

/* --- Main --- */
.main {
    padding: 3rem 0;
}

/* --- Footer --- */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-light);
    text-align: center;
    color: var(--text-faint);
    font-size: 0.875rem;
    transition: border-color 0.3s ease, color 0.3s ease;
}

/* --- Search --- */
.search {
    margin-bottom: 4rem;
}

.search-form {
    display: flex;
    align-items: center;
}

.search input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-input);
    padding: 1.25rem 0.25rem;
    font-size: 1.25rem;
    color: var(--text-main);
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s ease;
}

.search input::placeholder {
    color: var(--text-faint);
}

.search input:focus {
    border-color: var(--primary);
}

.search-clear {
    margin-left: 1rem;
    font-size: 0.875rem;
    color: var(--text-faint);
    white-space: nowrap;
    transition: color 0.2s;
}

.search-clear:hover {
    color: var(--primary);
}

/* --- Post list --- */
.posts {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

/* --- Post card (lista) --- */
.post-card .meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-faint);
    margin-bottom: 0.5rem;
}

.post-card .tags {
    display: flex;
    gap: 0.5rem;
}

.tag {
    color: var(--secondary);
    font-weight: 600;
}

.post-card h2 {
    font-size: 1.875rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    transition: color 0.2s;
}

.post-card h2 a:hover {
    color: var(--primary);
}

.post-card .excerpt {
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.read-more {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: color 0.2s;
}

.read-more:hover {
    color: var(--primary-hover);
}

.read-more svg {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s;
}

.post-card:hover .read-more svg {
    transform: translateX(4px);
}

/* --- Post detail --- */
.post-header {
    margin-bottom: 3rem;
}

.post-header .meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-faint);
    margin-bottom: 1rem;
}

.post-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-bold);
}

@media (min-width: 768px) {
    .post-header h1 {
        font-size: 3rem;
    }
}

/* --- Prose (conteúdo markdown) --- */
.prose {
    max-width: 65ch;
    color: var(--text-main);
    line-height: 1.85;
}

.prose h1, .prose h2, .prose h3 {
    color: var(--text-bold);
    margin-top: 2.5em;
    margin-bottom: 0.75em;
    font-weight: 700;
    line-height: 1.3;
}

.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.5rem; }
.prose h3 { font-size: 1.25rem; }

.prose p {
    margin-top: 1.25em;
    margin-bottom: 1.25em;
}

.prose ul {
    list-style-type: disc;
    margin: 1.25em 0;
    padding-left: 1.625em;
}

.prose ol {
    list-style-type: decimal;
    margin: 1.25em 0;
    padding-left: 1.625em;
}

.prose li {
    margin: 0.5em 0;
    padding-left: 0.375em;
}

.prose li::marker {
    color: var(--primary);
    font-weight: 600;
}

.prose strong {
    color: var(--text-bold);
    font-weight: 700;
}

.prose code {
    color: var(--code-color);
    background-color: var(--code-bg);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.prose a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.2s;
}

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

.prose blockquote {
    border-left: 3px solid var(--blockquote-border);
    padding-left: 1.25em;
    color: var(--text-muted);
    font-style: italic;
    margin: 1.5em 0;
}

/* --- Back link --- */
.back-link {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
}

.back-link a {
    color: var(--primary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s;
}

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

.back-link svg {
    width: 1rem;
    height: 1rem;
}

/* --- Empty state --- */
.empty-state {
    text-align: center;
    padding: 3rem 0;
}

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

.empty-state a {
    color: var(--primary);
    margin-top: 1rem;
    display: inline-block;
    text-decoration: underline;
}