/* Reader overlay: full-screen article view */

.reader {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    opacity: 0;
    transition: opacity .18s ease;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 48px 48px;
    background-position: -1px -1px;
}
.reader[hidden] { display: none; }
.reader.open { opacity: 1; }

.reader-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    padding-top: max(10px, calc(10px + env(safe-area-inset-top)));
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    min-height: 56px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    gap: 12px;
    flex-shrink: 0;
}
.reader-icon-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all .15s ease;
    padding: 0;
    flex-shrink: 0;
}
.reader-icon-btn:hover:not(:disabled) {
    color: var(--text);
    border-color: var(--border-strong);
    background: var(--bg-subtle);
}
.reader-icon-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--focus-ring); }
.reader-icon-btn:disabled { opacity: 0.35; cursor: default; }
.reader-icon-btn[aria-pressed="true"] { color: var(--text); border-color: var(--border-strong); background: var(--bg-subtle); }
.reader-icon-btn[aria-pressed="true"] svg { fill: currentColor; }

.reader-nav { display: inline-flex; align-items: center; gap: 8px; }
.reader-index {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    min-width: 72px;
    text-align: center;
}

.reader-article {
    flex: 1;
    overflow-y: auto;
    padding: 40px 20px 80px;
    padding-bottom: max(80px, calc(80px + env(safe-area-inset-bottom)));
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    -webkit-overflow-scrolling: touch;
}
.reader-article:focus { outline: none; }

.reader-article-inner {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.reader-eyebrow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    color: var(--text-subtle);
    letter-spacing: 0.05em;
}
.reader-eyebrow .sep { opacity: 0.4; }
.reader-eyebrow .meta-tone { display: inline-flex; align-items: center; gap: 6px; }

.reader-title {
    font-size: clamp(22px, 3.2vw, 30px);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.25;
    color: var(--text);
}
.reader-body {
    font-size: 16px;
    line-height: 1.65;
    color: var(--text);
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.reader-body p { font-size: inherit; }

.reader-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.reader-tag {
    display: inline-flex;
    align-items: center;
    height: 24px;
    padding: 0 10px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

.reader-foot {
    display: grid;
    grid-template-columns: 140px 1fr;
    row-gap: 10px;
    column-gap: 18px;
    padding-top: 20px;
    margin-top: 8px;
    border-top: 1px solid var(--border);
    font-size: 13px;
}
.reader-foot dt {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-subtle);
}
.reader-foot dd {
    color: var(--text);
    word-break: break-word;
}
.reader-foot a {
    color: var(--text);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    text-decoration-color: var(--border-strong);
}
.reader-foot a:hover { text-decoration-color: var(--text); }