/* ============================================================
   TEMA LIGHT ULTRA MODERNO — CodeSnippets()
   Paleta clara (branco-azulado) + acentos índigo/violeta.
   Mantém os MESMOS nomes de variáveis (--du-*) do tema dark,
   para que os estilos inline das views continuem funcionando.
   ============================================================ */

/* ── Variáveis ── */
:root {
    --du-bg: #f4f7fd;
    --du-bg-secondary: #eef2f9;
    --du-bg-tertiary: #e7edf8;
    --du-bg-card: #ffffff;
    --du-bg-glass: rgba(255, 255, 255, 0.72);
    --du-bg-navbar: rgba(255, 255, 255, 0.88);

    --du-cyan: #4f46e5;                              /* índigo 600 = acento principal */
    --du-cyan-dim: rgba(79, 70, 229, 0.10);
    --du-purple: #7c3aed;                            /* violeta 600 = acento secundário */
    --du-purple-dim: rgba(124, 58, 237, 0.10);
    --du-emerald: #059669;
    --du-emerald-dim: rgba(5, 150, 105, 0.10);
    --du-amber: #b45309;
    --du-amber-dim: rgba(180, 83, 9, 0.12);
    --du-rose: #e11d48;

    --du-text: #1e293b;
    --du-text-secondary: #475569;
    --du-text-muted: #64748b;

    --du-border: rgba(15, 23, 42, 0.10);
    --du-border-hover: rgba(79, 70, 229, 0.35);

    --du-gradient-1: linear-gradient(135deg, var(--du-cyan), var(--du-purple));
    --du-gradient-2: linear-gradient(135deg, var(--du-emerald), var(--du-cyan));
    --du-gradient-3: linear-gradient(135deg, var(--du-amber), var(--du-rose));

    --du-shadow-glow: 0 10px 30px rgba(79, 70, 229, 0.16);
    --du-shadow-card: 0 2px 10px rgba(15, 23, 42, 0.06);

    --du-code-bg: #f8fafc;
    --du-radius: 12px;
    --du-radius-sm: 8px;
}

/* ── Body ── */
body {
    background-color: var(--du-bg);
    background-image:
        radial-gradient(ellipse at 12% 18%, rgba(79, 70, 229, 0.07) 0%, transparent 45%),
        radial-gradient(ellipse at 88% 12%, rgba(124, 58, 237, 0.06) 0%, transparent 42%),
        radial-gradient(ellipse at 50% 100%, rgba(5, 150, 105, 0.05) 0%, transparent 55%);
    background-attachment: fixed;
    color: var(--du-text);
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
}

/* ── Headings ── */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--du-text);
}

h1 {
    font-size: 2.5rem;
    background: var(--du-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-info {
    color: var(--du-cyan) !important;
}

.text-muted {
    color: var(--du-text-muted) !important;
}

/* ── Navbar ── */
.navbar {
    background: var(--du-bg-navbar) !important;
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    border-bottom: 1px solid var(--du-border);
    box-shadow: 0 1px 14px rgba(15, 23, 42, 0.06);
    padding: 0.6rem 1rem;
}

.navbar-brand {
    font-family: 'Fira Code', monospace;
    font-weight: 700;
    font-size: 1.35rem;
    background: var(--du-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-brand span {
    -webkit-text-fill-color: initial;
    color: var(--du-purple);
}

/* Vale tanto para navbar-light quanto para a navbar-dark herdada */
.navbar .navbar-nav .nav-link,
.navbar-dark .navbar-nav .nav-link,
.navbar-light .navbar-nav .nav-link {
    color: var(--du-text-secondary) !important;
    margin: 0 0.15rem;
    padding: 0.5rem 0.875rem;
    border-radius: var(--du-radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.25s ease;
    position: relative;
}

.navbar .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link:hover,
.navbar-light .navbar-nav .nav-link:hover {
    color: var(--du-text) !important;
    background-color: var(--du-cyan-dim);
}

.navbar .navbar-nav .nav-link.active,
.navbar-dark .navbar-nav .nav-link.active,
.navbar-light .navbar-nav .nav-link.active {
    color: var(--du-cyan) !important;
    background-color: var(--du-cyan-dim);
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 2px;
    background: var(--du-gradient-1);
    border-radius: 2px;
}

.navbar-toggler {
    border-color: var(--du-border);
    color: var(--du-text);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23475569' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ── Search Bar ── */
.search-bar {
    position: relative;
}

.search-bar input {
    background-color: #ffffff;
    border: 1px solid var(--du-border);
    color: var(--du-text);
    padding-right: 2.5rem;
    border-radius: var(--du-radius-sm);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.search-bar input:focus {
    background-color: #ffffff;
    border-color: var(--du-cyan);
    box-shadow: 0 0 0 3px var(--du-cyan-dim);
    color: var(--du-text);
}

.search-bar input::placeholder {
    color: var(--du-text-muted) !important;
    opacity: 1 !important;
}

.search-bar button {
    position: absolute;
    right: 8px;
    top: 6px;
    background: none;
    border: none;
    color: var(--du-text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

.search-bar button:hover {
    color: var(--du-cyan);
}

/* ── Article Cards ── */
.article-card {
    background: var(--du-bg-card);
    border: 1px solid var(--du-border);
    border-radius: var(--du-radius);
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--du-shadow-card);
}

.article-card:hover {
    transform: translateY(-6px) scale(1.01);
    border-color: var(--du-border-hover);
    box-shadow: 0 16px 36px rgba(79, 70, 229, 0.15);
}

.article-card .card-header {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(124, 58, 237, 0.05));
    border-bottom: 1px solid var(--du-border);
    color: var(--du-cyan);
    font-family: 'Fira Code', monospace;
    padding: 0.75rem 1rem;
}

.article-card .card-header a {
    color: var(--du-text-secondary);
    transition: color 0.2s;
}

.article-card .card-header a:hover {
    color: var(--du-cyan);
}

.article-card .card-body {
    padding: 1.25rem;
    background: transparent;
}

.article-card .card-title {
    color: var(--du-text);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.article-card .card-title a {
    color: var(--du-text) !important;
    transition: color 0.2s;
}

.article-card .card-title a:hover {
    color: var(--du-cyan) !important;
}

.article-card .card-text {
    color: var(--du-text-secondary);
    margin-bottom: 1rem;
}

.article-card .card-footer {
    background: #fbfcfe;
    border-top: 1px solid var(--du-border);
    color: var(--du-text-muted);
    font-size: 0.85rem;
    padding: 0.75rem 1rem;
}

/* ── Tags ── */
.article-tag {
    display: inline-block;
    background: rgba(79, 70, 229, 0.08);
    color: #4338ca;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    font-size: 0.78rem;
    margin-right: 0.4rem;
    margin-bottom: 0.4rem;
    font-family: 'Fira Code', monospace;
    border: 1px solid rgba(79, 70, 229, 0.18);
    transition: all 0.2s;
}

.article-tag:hover {
    background: var(--du-cyan-dim);
    border-color: rgba(79, 70, 229, 0.4);
    color: #3730a3;
}

.article-tag.react {
    background: rgba(79, 70, 229, 0.10);
    color: #4338ca;
    border-color: rgba(79, 70, 229, 0.22);
}

.article-tag.node {
    background: var(--du-emerald-dim);
    color: #047857;
    border-color: rgba(5, 150, 105, 0.22);
}

.article-tag.javascript {
    background: var(--du-amber-dim);
    color: var(--du-amber);
    border-color: rgba(180, 83, 9, 0.22);
}

.article-tag.python {
    background: rgba(79, 70, 229, 0.10);
    color: #4338ca;
    border-color: rgba(79, 70, 229, 0.22);
}

/* ── Buttons ── */
.btn {
    font-weight: 600;
    letter-spacing: 0.3px;
    border-radius: var(--du-radius-sm);
    transition: all 0.3s ease;
    position: relative;
}

.btn-primary {
    background: var(--du-gradient-1);
    border: none;
    color: #fff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(79, 70, 229, 0.32);
    color: #fff;
}

.btn-outline-primary {
    color: var(--du-cyan);
    border-color: rgba(79, 70, 229, 0.45);
    background: transparent;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background: var(--du-cyan);
    border-color: var(--du-cyan);
    color: #fff;
}

/* "light" no tema claro vira um contorno escuro, senão fica invisível */
.btn-outline-light {
    border-color: rgba(15, 23, 42, 0.22);
    color: var(--du-text-secondary);
    background: transparent;
}

.btn-outline-light:hover,
.btn-outline-light:focus {
    border-color: var(--du-cyan);
    background: var(--du-cyan-dim);
    color: var(--du-cyan);
}

.btn-outline-secondary {
    border-color: var(--du-border);
    color: var(--du-text-secondary);
}

.btn-outline-secondary:hover {
    background: var(--du-cyan-dim);
    border-color: var(--du-cyan);
    color: var(--du-cyan);
}

/* ─── Article Content (Post View) ─── */
.article-content {
    background: var(--du-bg-card);
    border: 1px solid var(--du-border);
    border-radius: var(--du-radius);
    padding: 2rem;
    box-shadow: var(--du-shadow-card);
}

.article-title {
    color: var(--du-text);
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 0.75rem;
    background: none;
    -webkit-text-fill-color: initial;
    -webkit-background-clip: initial;
    background-clip: initial;
}

.article-meta {
    color: var(--du-text-muted);
    font-size: 0.9rem;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--du-border);
}

.article-body {
    color: var(--du-text);
    font-size: 1.05rem;
    line-height: 1.8;
}

.article-body p {
    margin-bottom: 1.25rem;
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--du-radius-sm);
    border: 1px solid var(--du-border);
}

.article-body ul,
.article-body ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

/* Hashtags geradas no conteúdo */
.article-body a {
    color: #4338ca;
}

.article-body a:hover {
    color: var(--du-purple);
}

.article-share {
    border-top: 1px solid var(--du-border);
    padding-top: 1.5rem;
}

.article-share .social-icons a {
    border-color: var(--du-border);
    color: var(--du-text-muted);
}

.article-share .social-icons a:hover {
    border-color: var(--du-cyan);
    color: var(--du-cyan);
}

/* ─── Sidebar ─── */
.sidebar-section {
    background: var(--du-bg-card);
    border: 1px solid var(--du-border);
    border-radius: var(--du-radius);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--du-shadow-card);
}

.sidebar-section h4,
.sidebar-section h5 {
    color: var(--du-cyan);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--du-cyan-dim);
}

.sidebar-section p {
    color: var(--du-text-secondary);
    font-size: 0.9rem;
}

.related-articles h3 {
    font-family: 'Fira Code', monospace;
    color: var(--du-text-secondary);
    font-size: 1.25rem;
}

/* ── Footer ── */
footer {
    background: var(--du-bg-secondary);
    border-top: 1px solid var(--du-border);
    padding-top: 3rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--du-gradient-1);
    opacity: 0.55;
}

footer h5 {
    color: var(--du-cyan);
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

footer a {
    color: var(--du-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    font-size: 0.9rem;
}

footer a:hover {
    color: var(--du-cyan);
    text-decoration: none;
}

footer p {
    color: var(--du-text-muted);
    font-size: 0.9rem;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--du-border);
    border-radius: 50%;
    color: var(--du-text-muted);
    background: #ffffff;
    margin-right: 0.5rem;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    border-color: var(--du-cyan);
    background: var(--du-cyan-dim);
    color: var(--du-cyan);
    transform: translateY(-2px);
}

.footer-bottom {
    background: rgba(15, 23, 42, 0.03);
    padding: 1.2rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--du-border);
}

.footer-bottom p {
    color: var(--du-text-muted);
    font-size: 0.85rem;
}

/* ── Links gerais ── */
a {
    color: #4338ca;
    transition: color 0.2s;
}

a:hover {
    color: var(--du-purple);
}

/* ── Border highlight ── */
.border-bottom,
.border-top {
    border-color: var(--du-border) !important;
}

/* ── "Você sabia?" box ── */
#voce-sabia {
    background: var(--du-bg-card) !important;
    border-left: 4px solid var(--du-cyan) !important;
    border-radius: var(--du-radius-sm) !important;
    color: var(--du-text) !important;
    box-shadow: var(--du-shadow-card);
}

#voce-sabia strong {
    background: var(--du-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Cards de quiz ── */
.bg-white.rounded {
    background: var(--du-bg-card) !important;
    border: 1px solid var(--du-border);
    border-radius: var(--du-radius-sm) !important;
    transition: all 0.3s;
}

.bg-white.rounded:hover {
    border-color: var(--du-border-hover);
    box-shadow: var(--du-shadow-glow);
}

.bg-white.rounded a {
    color: var(--du-text-secondary) !important;
}

.bg-white.rounded a:hover {
    color: var(--du-cyan) !important;
}

/* ── Pagination ── */
.pagination {
    margin-top: 2rem;
}

.page-item:not(.active) .page-link {
    background: #ffffff;
    border-color: var(--du-border);
    color: var(--du-text-secondary);
    border-radius: var(--du-radius-sm);
    margin: 0 2px;
    transition: all 0.2s;
}

.page-item.active .page-link {
    background: var(--du-gradient-1);
    border: none;
    color: #fff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.page-item:not(.active) .page-link:hover {
    background: var(--du-cyan-dim);
    border-color: var(--du-cyan);
    color: var(--du-cyan);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--du-bg-secondary); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--du-cyan), var(--du-purple));
    border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover { filter: brightness(1.1); }

/* ── Text com gradiente ── */
.text-gradient {
    background: var(--du-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Table ── */
.table {
    border: 1px solid var(--du-border);
    background: #ffffff;
    color: var(--du-text);
    --bs-table-color: var(--du-text);
    --bs-table-bg: transparent;
    --bs-table-border-color: var(--du-border);
}

.table thead th {
    border-bottom: 2px solid var(--du-border);
    background: rgba(79, 70, 229, 0.06);
    color: #4338ca;
    font-weight: 600;
}

.table tbody tr:hover {
    background: rgba(79, 70, 229, 0.04);
}

/* ── Code blocks ── */
pre, code {
    font-family: 'Fira Code', monospace;
}

code {
    background: rgba(79, 70, 229, 0.08);
    color: #4338ca;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875em;
}

pre {
    background: var(--du-code-bg);
    border: 1px solid var(--du-border);
    border-radius: var(--du-radius-sm);
    padding: 1.25rem;
    overflow-x: auto;
    color: var(--du-text);
}

pre code {
    border: none;
    padding: 0;
    background: transparent;
    color: var(--du-text);
}

/* ── Blockquote ── */
blockquote {
    border-left: 3px solid var(--du-cyan);
    background: rgba(79, 70, 229, 0.04);
    padding: 0.75rem 1.25rem;
    margin: 1.5rem 0;
    border-radius: 0 var(--du-radius-sm) var(--du-radius-sm) 0;
    color: var(--du-text-secondary);
    font-style: italic;
}

/* ── Badges ── */
.badge {
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 0.3rem 0.6rem;
}

.badge.bg-info {
    background: var(--du-cyan-dim) !important;
    color: #4338ca !important;
    border: 1px solid rgba(79, 70, 229, 0.22);
}

.badge.bg-success {
    background: var(--du-emerald-dim) !important;
    color: #047857 !important;
    border: 1px solid rgba(5, 150, 105, 0.22);
}

.badge.bg-danger {
    background: rgba(225, 29, 72, 0.10) !important;
    color: #be123c !important;
    border: 1px solid rgba(225, 29, 72, 0.22);
}

.badge.bg-warning {
    background: var(--du-amber-dim) !important;
    color: var(--du-amber) !important;
    border: 1px solid rgba(180, 83, 9, 0.22);
}

/* ── Horizontal Rule ── */
hr {
    border-color: var(--du-border);
    opacity: 1;
}

/* ── Selection ── */
::selection {
    background: rgba(79, 70, 229, 0.22);
    color: var(--du-text);
}

/* ── Glow Effects ── */
.glow-cyan {
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.18);
}

.glow-purple {
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.18);
}

/* ── Loading shimmer (para cards enquanto carregam) ── */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* ── Ajustes de contraste no tema claro ──
   No tema dark o "text-white" era usado sobre fundos escuros.
   Em fundo claro, garante legibilidade sem precisar editar cada view. */
.text-white {
    color: var(--du-text) !important;
}

.text-white-50 {
    color: var(--du-text-secondary) !important;
}

/* Mantém texto branco onde há fundo colorido de verdade */
.bg-primary .text-white, .bg-primary.text-white,
.bg-dark .text-white, .bg-dark.text-white,
.bg-success .text-white, .bg-success.text-white,
.bg-danger .text-white, .bg-danger.text-white,
.bg-warning .text-white, .bg-warning.text-white,
.bg-info .text-white, .bg-info.text-white,
.btn .text-white {
    color: #ffffff !important;
}

.bg-dark {
    background-color: #1e293b !important;
    color: #f8fafc !important;
}

/* ── Botão de alternância de tema ── */
.btn-tema {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    flex: 0 0 auto;
    background: transparent;
    border: 1px solid var(--du-border);
    border-radius: 50%;
    color: var(--du-text-secondary);
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-tema:hover,
.btn-tema:focus-visible {
    border-color: var(--du-cyan);
    background: var(--du-cyan-dim);
    color: var(--du-cyan);
    outline: none;
}

.btn-tema i {
    font-size: 0.95rem;
    line-height: 1;
}