/* ============================================================
   Blog Enhancements: copy button, reading bar, tag filter
   ============================================================ */

/* ---------- Reading progress bar ---------- */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: linear-gradient(90deg, #00f1e7 0%, #4ade80 100%);
    box-shadow: 0 0 10px rgba(0, 241, 231, 0.55);
    z-index: 1080; /* above Bootstrap fixed-top navbar */
    transition: width 0.08s linear;
    pointer-events: none;
}

/* ---------- Code block: kill horizontal scroll, wrap content instead ---------- */
/* Use overflow:visible so the absolutely-positioned "Terminal" badge and copy
   button (both at top:-1px) stay visible. Aggressive wrapping on <code> guarantees
   content never overflows in the first place. */
.code-block {
    overflow: visible !important;
}
.code-block code {
    white-space: normal;            /* collapse source indentation/newlines */
    overflow-wrap: anywhere;        /* break long URLs / unbreakable strings */
    word-break: normal;             /* prefer breaking at spaces first */
    display: block;                 /* fill the row so wrap respects container width */
    max-width: 100%;
}

/* ---------- Copy-to-clipboard button ---------- */
.code-copy {
    position: absolute;
    top: -1px;
    right: -1px;
    background: var(--dark-accent, #1a1d20);
    color: var(--highlight-color, #00f1e7);
    border: 1px solid var(--highlight-color, #00f1e7);
    border-radius: 0 8px 0 8px;
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    line-height: 1.4;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.code-copy:hover {
    background: var(--highlight-color, #00f1e7);
    color: var(--dark-accent, #1a1d20);
    box-shadow: 0 0 10px rgba(0, 241, 231, 0.45);
}
.code-copy:focus-visible {
    outline: 2px solid var(--highlight-color, #00f1e7);
    outline-offset: 2px;
}
.code-copy.is-copied {
    background: #4ade80;
    color: #0a0a0a;
    border-color: #4ade80;
}
.code-copy svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

@media (max-width: 576px) {
    .code-copy { font-size: 0.65rem; padding: 3px 8px; }
}

/* ---------- Tag filter chips (blog index) ---------- */
.tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0 28px;
    align-items: center;
}
.tag-filter-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.55);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-right: 4px;
}
.tag-chip {
    background: transparent;
    border: 1px solid rgba(0, 241, 231, 0.35);
    color: rgba(255, 255, 255, 0.85);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 0.78rem;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    transition: all 0.15s ease;
    text-transform: lowercase;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.tag-chip:hover {
    border-color: var(--highlight-color, #00f1e7);
    color: var(--highlight-color, #00f1e7);
}
.tag-chip.is-active {
    background: var(--highlight-color, #00f1e7);
    color: #0a0a0a;
    border-color: var(--highlight-color, #00f1e7);
    box-shadow: 0 0 10px rgba(0, 241, 231, 0.45);
}
.tag-chip .count {
    background: rgba(0, 0, 0, 0.25);
    border-radius: 999px;
    padding: 1px 7px;
    font-size: 0.7rem;
    font-weight: 600;
}
.tag-chip.is-active .count {
    background: rgba(0, 0, 0, 0.2);
    color: #0a0a0a;
}

.article-item.is-hidden {
    display: none !important;
}
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: rgba(255, 255, 255, 0.6);
    font-family: 'JetBrains Mono', monospace;
    display: none;
}
.no-results.is-shown { display: block; }