:root {
    --bg: #f4f4f5;
    --fg: #18181b;
    --muted: #52525b;
    --card-bg: #ffffff;
    --border: #18181b;
    --border-soft: #d4d4d8;
    --accent: #18181b;
    --accent-fg: #ffffff;
    --danger: #b91c1c;
    --shadow: 6px 6px 0 var(--border);
    --radius: 2px;
    --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-mono);
    line-height: 1.5;
}

a {
    color: inherit;
}

.wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

.wrap.wrap-top {
    padding-bottom: 0;
}

.wrap.wrap-bottom {
    padding-top: 0;
}

.site-header {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
    padding: 24px 0 32px;
}

.site-header .header-actions {
    position: absolute;
    top: 24px;
    right: 20px;
}

.site-header .logo-row {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}

.site-header img.logo {
    display: block;
}

.site-header .site-title {
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 8px;
}

.header-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 2px solid var(--border);
    background: var(--card-bg);
    color: var(--fg);
    padding: 10px 16px;
    font-family: inherit;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
    border-radius: var(--radius);
    text-decoration: none;
}

.btn:hover {
    background: var(--accent);
    color: var(--accent-fg);
}

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

/* Same position and hit target as any other button, just rendered invisible
   against the page background — intentionally hidden from casual visitors. */
.btn-invisible,
.btn-invisible:hover {
    background: var(--bg);
    border-color: var(--bg);
    color: var(--bg);
}

.btn-danger {
    border-color: var(--danger);
    color: var(--danger);
}

.panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 32px;
}

.panel {
    border: 2px solid var(--border);
    background: var(--card-bg);
    padding: 18px 20px;
}

.panel h2 {
    margin: 0 0 12px;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
}

.panel ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.panel li {
    display: flex;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-soft);
    font-size: 0.9rem;
}

.panel li:last-child {
    border-bottom: none;
}

.panel .date {
    color: var(--muted);
    white-space: nowrap;
}

.panel li .article-title {
    flex: 1 1 auto;
}

.read-post-link {
    color: var(--accent);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    text-decoration: none;
    white-space: nowrap;
}

.read-post-link:hover {
    text-decoration: underline;
}

/* --- Article overlay --- */

body.article-overlay-open {
    overflow: hidden;
}

.article-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.article-overlay.is-open {
    display: flex;
}

.article-overlay-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(24, 24, 27, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.article-overlay-panel {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 640px;
    max-height: 80vh;
    overflow-y: auto;
    background: var(--card-bg);
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
    padding: 36px 28px 28px;
}

.article-overlay-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border);
    background: var(--card-bg);
    color: var(--fg);
    font-family: inherit;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    border-radius: var(--radius);
}

.article-overlay-close:hover {
    background: var(--accent);
    color: var(--accent-fg);
}

.article-full .date {
    color: var(--muted);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.article-full h2 {
    margin: 0 0 16px;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 2px solid var(--border);
    padding-bottom: 12px;
}

.article-full .details {
    font-size: 0.92rem;
    line-height: 1.7;
}

.ads-row {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    margin: 0 auto;
    padding: 0 20px;
}

.tool-grid-wrap {
    flex: 1 1 auto;
    min-width: 0;
    max-width: 1100px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ad-slot {
    flex-shrink: 0;
    text-align: center;
}

.ad-slot-banner {
    width: 100%;
}

.ad-slot-top {
    margin-bottom: 20px;
}

.ad-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 6px;
}

@media (max-width: 1000px) {
    .ad-slot-side {
        display: none;
    }
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.tool-card {
    border: 2px solid var(--border);
    background: var(--card-bg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    box-shadow: var(--shadow);
}

.tool-card .tool-head {
    display: flex;
    align-items: center;
    gap: 14px;
}

.tool-card img.tool-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border: 2px solid var(--border);
    background: #fff;
    flex-shrink: 0;
}

.tool-card h3 {
    margin: 0;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tool-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.88rem;
    flex-grow: 1;
}

.tool-card .btn {
    align-self: flex-start;
}

footer {
    text-align: center;
    color: var(--muted);
    font-size: 0.8rem;
    padding-top: 40px;
}

@media (max-width: 720px) {
    .panels {
        grid-template-columns: 1fr;
    }

    .site-header {
        padding: 16px 0 24px;
    }

    .site-header .header-actions {
        position: static;
        margin-top: 4px;
    }
}

/* --- Admin panel --- */

.admin-shell {
    min-height: 100vh;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-mono);
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--accent);
    color: var(--accent-fg);
    flex-wrap: wrap;
    gap: 10px;
}

.admin-topbar h1 {
    margin: 0;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.admin-layout {
    display: flex;
    align-items: flex-start;
    max-width: 1300px;
    margin: 0 auto;
}

.admin-sidebar {
    width: 220px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 24px 16px;
    position: sticky;
    top: 0;
}

.admin-nav-link {
    display: block;
    padding: 10px 12px;
    text-decoration: none;
    color: var(--fg);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
    border: 2px solid transparent;
    border-radius: var(--radius);
}

.admin-nav-link:hover {
    border-color: var(--border-soft);
}

.admin-nav-link.active {
    background: var(--accent);
    color: var(--accent-fg);
    border-color: var(--border);
}

.admin-main {
    flex-grow: 1;
    min-width: 0;
    padding: 24px 20px 60px;
    display: grid;
    gap: 20px;
}

.admin-page-title {
    margin: 0;
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

@media (max-width: 800px) {
    .admin-layout {
        flex-direction: column;
    }

    .admin-sidebar {
        position: static;
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 16px 20px 0;
    }

    .admin-nav-link {
        flex-grow: 1;
        text-align: center;
    }
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

.card {
    border: 2px solid var(--border);
    background: var(--card-bg);
    padding: 20px;
}

.card h2 {
    margin: 0 0 16px;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
}

.field {
    margin-bottom: 14px;
}

.field label {
    display: block;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 6px;
}

.field input[type="text"],
.field input[type="url"],
.field input[type="number"],
.field input[type="password"],
.field textarea,
.field select {
    width: 100%;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--fg);
    padding: 9px 10px;
    font-family: inherit;
    font-size: 0.9rem;
    border-radius: var(--radius);
}

.field textarea {
    resize: vertical;
    min-height: 80px;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

th, td {
    text-align: left;
    padding: 8px 6px;
    border-bottom: 1px solid var(--border-soft);
}

th {
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    color: var(--muted);
}

.table-wrap {
    overflow-x: auto;
}

.alert {
    padding: 12px 14px;
    border: 2px solid var(--border);
    margin-bottom: 16px;
    font-size: 0.88rem;
}

.alert-error {
    border-color: var(--danger);
    color: var(--danger);
}

.alert-success {
    border-color: var(--accent);
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-mono);
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 380px;
    border: 2px solid var(--border);
    background: var(--card-bg);
    padding: 28px;
    box-shadow: var(--shadow);
}

.login-card h1 {
    margin: 0 0 20px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border);
    padding-bottom: 14px;
}

.actions-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* --- Stat tiles & bar chart (analytics overview) --- */

.stat-tiles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 2px;
    background: var(--border);
    border: 2px solid var(--border);
    margin-bottom: 20px;
}

.stat-tile {
    background: var(--card-bg);
    padding: 16px 18px;
}

.stat-tile .stat-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 8px;
}

.stat-tile .stat-value {
    font-size: 1.6rem;
    font-weight: 700;
}

.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bar-row {
    display: grid;
    grid-template-columns: minmax(100px, 200px) 1fr auto;
    align-items: center;
    gap: 12px;
}

.bar-label {
    font-size: 0.82rem;
    color: var(--fg);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bar-track {
    height: 24px;
    background: var(--border-soft);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 0 4px 4px 0;
    min-width: 4px;
}

.bar-value {
    font-size: 0.85rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    min-width: 2.5em;
    text-align: right;
}

@media (max-width: 560px) {
    .bar-row {
        grid-template-columns: 90px 1fr auto;
        gap: 8px;
    }
}