:root {
    --bg-main: #0b0b0b;
    --bg-panel: #111;
    --border: #2a2a2a;
    --text-main: #eaeaea;
    --text-muted: #a0a0a0;
    --accent: #4ea1ff;
}

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

/* ===== Base layout ===== */
body {
    background: var(--bg-main);
    color: var(--text-main);
    font-family: system-ui, sans-serif;

    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
.header {
    border-bottom: 1px solid var(--border);
    background: var(--bg-panel);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
}

.logo {
    font-weight: 600;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.3rem;
    cursor: pointer;
}

/* ===== Main layout ===== */
.layout {
    flex: 1;
    display: flex;
    width: 100%;
}

/* ===== Left sidebar ===== */
#sidebar {
    width: 240px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    padding: 20px;
    flex-shrink: 0;
}

.sidebar-nav a {
    display: block;
    color: var(--text-main);
    text-decoration: none;
    margin-bottom: 8px;
}

.sidebar-nav h4 {
    margin: 20px 0 8px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* ===== Content ===== */
.content {
    flex: 1;
    padding: 32px;
}

.content-inner {
    max-width: 900px;
    margin: 0 auto;
}

/* ===== Page content typography ===== */
.page-content {
    padding-top: 16px;
}

.page-content h1 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.page-content h2 {
    font-size: 1.3rem;
    margin: 32px 0 12px;
}

.page-content p {
    margin-bottom: 16px;
    line-height: 1.6;
    color: var(--text-main);
}

.page-content ul {
    margin: 16px 0 24px 20px;
}

.page-content li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.page-content em {
    color: var(--text-muted);
}

/* ===== Right sidebar (ads) — desktop only ===== */
.right-ads {
    width: 260px;
    border-left: 1px solid var(--border);
    background: var(--bg-panel);
    padding: 20px;
    flex-shrink: 0;
}

.ad-box {
    border: 1px dashed var(--border);
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Footer ===== */
footer {
    border-top: 1px solid var(--border);
    background: var(--bg-panel);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    align-items: center;
}

.footer-center {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Responsive ===== */

/* Tablets + mobile */
@media (max-width: 1024px) {

    /* Left sidebar becomes drawer */
    #sidebar {
        position: fixed;
        top: 60px;
        left: -260px;
        height: calc(100vh - 60px);
        z-index: 1000;
        transition: left 0.25s ease;
    }

    body.sidebar-open #sidebar {
        left: 0;
    }

    /* Toggle button appears */
    .menu-toggle {
        display: block;
    }

    /* Right sidebar hidden */
    .right-ads {
        display: none;
    }
}

/* Mobile */
@media (max-width: 700px) {
    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
}