/* ─── Reset & Base ─────────────────────────────────────────────── */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    :root {
        --bg: #0A0A09;
        --surface: #141412;
        --surface2: #1C1C1A;
        --border: #2A2A27;
        --accent: #C5FF00;
        --accent-dim: #8AB300;
        --text: #EDE8DC;
        --muted: #7A7468;
        --danger: #FF4040;
        --mark-bg: rgba(197, 255, 0, 0.18);
        --mark-border: rgba(197, 255, 0, 0.6);
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        background: var(--bg);
        color: var(--text);
        font-family: 'Lora', Georgia, serif;
        font-size: 16px;
        line-height: 1.7;
        min-height: 100vh;
        overflow-x: hidden;
    }

    h1,
    h2,
    h3,
    h4,
    .ui-font {
        font-family: 'Syne', sans-serif;
    }

    code,
    pre,
    .mono,
    textarea,
    .output-display {
        font-family: 'Courier Prime', 'Courier New', monospace;
    }

    a {
        color: var(--accent);
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    /* ─── Noise grain overlay ───────────────────────────────────────── */
    body::before {
        content: '';
        position: fixed;
        inset: 0;
        z-index: 0;
        pointer-events: none;
        opacity: 0.035;
        background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
        background-repeat: repeat;
        background-size: 256px;
    }

    /* ─── Layout wrapper ────────────────────────────────────────────── */
    .container {
        position: relative;
        z-index: 1;
        max-width: 1100px;
        margin: 0 auto;
        padding: 0 2rem;
    }

    /* ─── Header / Hero ─────────────────────────────────────────────── */
    header {
        position: relative;
        border-bottom: 1px solid var(--border);
        padding: 4rem 0 3rem;
        overflow: hidden;
    }

    header .container {
        display: flex;
        flex-direction: column;
        gap: 1.25rem;
    }

    .hero-stripe {
        position: absolute;
        top: 0;
        right: -60px;
        width: 420px;
        height: 100%;
        background: repeating-linear-gradient(-55deg,
                transparent,
                transparent 18px,
                rgba(197, 255, 0, 0.04) 18px,
                rgba(197, 255, 0, 0.04) 36px);
        pointer-events: none;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-family: 'Syne', sans-serif;
        font-size: 0.72rem;
        font-weight: 700;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        color: var(--bg);
        background: var(--accent);
        padding: 0.3rem 0.75rem;
        width: fit-content;
    }

    h1 {
        font-size: clamp(3.5rem, 10vw, 6.5rem);
        font-weight: 800;
        line-height: 0.92;
        letter-spacing: -0.03em;
        color: var(--text);
    }

    h1 span.accent {
        color: var(--accent);
    }

    .tagline {
        font-family: 'Lora', serif;
        font-style: italic;
        font-size: 1.2rem;
        color: var(--muted);
        max-width: 540px;
        line-height: 1.5;
    }

    .hero-nav {
        display: flex;
        gap: 1.5rem;
        flex-wrap: wrap;
        margin-top: 0.5rem;
    }

    .hero-nav a {
        font-family: 'Syne', sans-serif;
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--muted);
        border-bottom: 1px solid var(--border);
        padding-bottom: 0.15rem;
        transition: color 0.2s, border-color 0.2s;
    }

    .hero-nav a:hover {
        color: var(--accent);
        border-color: var(--accent);
        text-decoration: none;
    }

    /* ─── Section titles ────────────────────────────────────────────── */
    .section-header {
        display: flex;
        align-items: baseline;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
        font-weight: 800;
        letter-spacing: -0.02em;
    }

    .section-header .rule {
        flex: 1;
        height: 1px;
        background: var(--border);
    }

    /* ─── Tool section ──────────────────────────────────────────────── */
    #tool {
        padding: 4rem 0;
        border-bottom: 1px solid var(--border);
    }

    .editor-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
        border: 1px solid var(--border);
    }

    .editor-pane {
        display: flex;
        flex-direction: column;
    }

    .editor-pane+.editor-pane {
        border-left: 1px solid var(--border);
    }

    .pane-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.6rem 1rem;
        border-bottom: 1px solid var(--border);
        background: var(--surface);
    }

    .pane-label {
        font-family: 'Syne', sans-serif;
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        color: var(--muted);
    }

    .pane-label.output-label {
        color: var(--accent);
    }

    .pane-actions {
        display: flex;
        gap: 0.5rem;
        align-items: center;
    }

    .btn-copy {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        background: transparent;
        border: 1px solid var(--border);
        color: var(--muted);
        padding: 0.25rem 0.7rem;
        cursor: pointer;
        transition: all 0.15s;
    }

    .btn-copy:hover {
        border-color: var(--accent);
        color: var(--accent);
    }

    .btn-copy.copied {
        border-color: var(--accent);
        color: var(--bg);
        background: var(--accent);
    }

    .btn-clear {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        background: transparent;
        border: 1px solid var(--border);
        color: var(--muted);
        padding: 0.25rem 0.7rem;
        cursor: pointer;
        transition: all 0.15s;
    }

    .btn-clear:hover {
        border-color: #555;
        color: var(--text);
    }

    #input-area {
        width: 100%;
        min-height: 340px;
        background: var(--surface);
        border: none;
        outline: none;
        color: var(--text);
        font-size: 0.94rem;
        line-height: 1.75;
        padding: 1.25rem 1.25rem;
        resize: vertical;
        field-sizing: content;
    }

    #input-area::placeholder {
        color: #555248;
    }

    .output-display {
        min-height: 340px;
        background: var(--surface2);
        padding: 1.25rem 1.25rem;
        font-size: 0.94rem;
        line-height: 1.75;
        color: var(--text);
        white-space: pre-wrap;
        word-break: break-word;
        overflow-y: auto;
        user-select: text;
    }

    .output-display mark {
        background: var(--mark-bg);
        color: var(--accent);
        border-bottom: 1px solid var(--mark-border);
        border-radius: 0;
        padding: 0;
        font-style: normal;
        animation: flash-in 0.3s ease;
    }

    @keyframes flash-in {
        from {
            background: rgba(197, 255, 0, 0.45);
        }

        to {
            background: var(--mark-bg);
        }
    }

    .output-empty {
        color: #555248;
        font-style: italic;
    }

    /* ─── Stats bar ─────────────────────────────────────────────────── */
    .stats-bar {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        flex-wrap: wrap;
        padding: 0.75rem 1.25rem;
        background: var(--surface);
        border: 1px solid var(--border);
        border-top: none;
    }

    .stat-item {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-family: 'Syne', sans-serif;
        font-size: 0.72rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--muted);
    }

    .stat-item .stat-num {
        color: var(--accent);
        font-size: 1rem;
        font-weight: 800;
        transition: transform 0.15s;
    }

    .stat-item .stat-num.bump {
        animation: num-bump 0.25s ease;
    }

    @keyframes num-bump {
        0% {
            transform: scale(1);
        }

        50% {
            transform: scale(1.35);
        }

        100% {
            transform: scale(1);
        }
    }

    .stats-bar .stat-divider {
        width: 1px;
        height: 1.2rem;
        background: var(--border);
    }

    .stat-pill {
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }

    .type-badge {
        display: inline-block;
        font-family: 'Syne', sans-serif;
        font-size: 0.6rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        padding: 0.15rem 0.45rem;
        background: var(--surface2);
        border: 1px solid var(--border);
        color: var(--muted);
        transition: all 0.2s;
    }

    .type-badge.active {
        border-color: var(--accent-dim);
        color: var(--accent);
    }

    /* ─── Character map table ──────────────────────────────────────── */
    #what-we-strip {
        padding: 4rem 0;
        border-bottom: 1px solid var(--border);
    }

    .char-table {
        width: 100%;
        border-collapse: collapse;
        font-size: 0.9rem;
    }

    .char-table thead {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--muted);
    }

    .char-table th {
        padding: 0.6rem 1rem;
        border-bottom: 1px solid var(--border);
        text-align: left;
    }

    .char-table td {
        padding: 0.75rem 1rem;
        border-bottom: 1px solid var(--border);
        vertical-align: middle;
    }

    .char-table tr:last-child td {
        border-bottom: none;
    }

    .char-table tr:hover td {
        background: var(--surface);
    }

    .char-cell {
        font-size: 1.4rem;
        color: var(--danger);
    }

    .char-arrow {
        color: var(--muted);
        font-family: 'Syne', sans-serif;
        font-size: 0.85rem;
    }

    .char-result {
        font-size: 1.1rem;
        color: var(--accent);
        font-family: 'Courier Prime', monospace;
    }

    .char-name {
        color: var(--muted);
        font-size: 0.85rem;
        font-style: italic;
    }

    .char-unicode {
        font-family: 'Courier Prime', monospace;
        font-size: 0.8rem;
        color: #555;
    }

    /* ─── File upload / download buttons ───────────────────────────── */
    .btn-file {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        background: transparent;
        border: 1px solid var(--border);
        color: var(--muted);
        padding: 0.25rem 0.7rem;
        cursor: pointer;
        transition: all 0.15s;
        white-space: nowrap;
    }

    .btn-file:hover {
        border-color: var(--accent-dim);
        color: var(--accent);
    }

    .btn-download {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        background: transparent;
        border: 1px solid var(--border);
        color: var(--muted);
        padding: 0.25rem 0.7rem;
        cursor: pointer;
        transition: all 0.15s;
        white-space: nowrap;
        text-decoration: none;
        display: inline-block;
    }

    .btn-download:hover {
        border-color: var(--accent-dim);
        color: var(--accent);
        text-decoration: none;
    }

    .btn-download:disabled,
    .btn-download.disabled {
        opacity: 0.35;
        pointer-events: none;
    }

    /* ─── Install accordion ─────────────────────────────────────────── */
    #install {
        padding: 4rem 0;
        border-bottom: 1px solid var(--border);
    }

    .install-grid {
        border: 1px solid var(--border);
    }

    .install-item {
        border-bottom: 1px solid var(--border);
    }

    .install-item:last-child {
        border-bottom: none;
    }

    .install-item.install-item-wide {
        border-bottom: none;
    }

    .install-toggle {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
        padding: 1rem 1.25rem;
        background: var(--surface);
        border: none;
        cursor: pointer;
        text-align: left;
        transition: background 0.15s;
    }

    .install-toggle:hover {
        background: var(--surface2);
    }

    .install-toggle.open {
        background: var(--surface2);
    }

    .install-toggle-left {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }

    .install-platform-icon {
        font-size: 1.1rem;
        line-height: 1;
        flex-shrink: 0;
    }

    .install-platform-name {
        font-family: 'Syne', sans-serif;
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: var(--text);
    }

    .install-chevron {
        color: var(--muted);
        font-size: 0.65rem;
        transition: transform 0.2s;
        flex-shrink: 0;
    }

    .install-toggle.open .install-chevron {
        transform: rotate(180deg);
        color: var(--accent);
    }

    .install-content {
        display: none;
        padding: 1.25rem;
        background: var(--bg);
        border-top: 1px solid var(--border);
    }

    .install-content.open {
        display: block;
    }

    /* ─── Code blocks ───────────────────────────────────────────────── */
    .code-block-wrap {
        position: relative;
        margin: 0.75rem 0;
    }

    pre.code-block {
        background: var(--bg);
        border: 1px solid var(--border);
        padding: 1rem 1.25rem;
        overflow-x: auto;
        font-size: 0.88rem;
        line-height: 1.6;
        color: var(--text);
        margin: 0;
    }

    pre.code-block .comment {
        color: var(--muted);
        font-style: italic;
    }

    pre.code-block .cmd {
        color: var(--accent);
    }

    .code-label {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--muted);
        margin-bottom: 0.4rem;
        margin-top: 1rem;
    }

    .code-label:first-child {
        margin-top: 0;
    }

    .copy-code-btn {
        position: absolute;
        top: 0.6rem;
        right: 0.6rem;
        z-index: 1;
        font-family: 'Syne', sans-serif;
        font-size: 0.62rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        background: var(--surface2);
        border: 1px solid var(--border);
        color: var(--muted);
        padding: 0.2rem 0.55rem;
        cursor: pointer;
        transition: all 0.15s;
    }

    .copy-code-btn:hover {
        color: var(--accent);
        border-color: var(--accent);
    }

    .copy-code-btn.copied {
        color: var(--bg);
        background: var(--accent);
        border-color: var(--accent);
    }

    /* ─── Usage section ─────────────────────────────────────────────── */
    #usage {
        padding: 4rem 0;
        border-bottom: 1px solid var(--border);
    }

    .usage-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }

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

    .options-table th {
        font-family: 'Syne', sans-serif;
        font-size: 0.65rem;
        font-weight: 700;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--muted);
        padding: 0.5rem 0.75rem;
        border-bottom: 1px solid var(--border);
        text-align: left;
    }

    .options-table td {
        padding: 0.65rem 0.75rem;
        border-bottom: 1px solid var(--border);
        vertical-align: top;
    }

    .options-table tr:last-child td {
        border-bottom: none;
    }

    .options-table tr:hover td {
        background: var(--surface);
    }

    .option-flag {
        font-family: 'Courier Prime', monospace;
        font-size: 0.88rem;
        color: var(--accent);
        white-space: nowrap;
    }

    .option-desc {
        color: var(--muted);
        line-height: 1.5;
    }

    .usage-example {
        margin-top: 0.5rem;
    }

    .usage-example h4 {
        font-family: 'Syne', sans-serif;
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--muted);
        margin-bottom: 0.5rem;
    }

    /* ─── Why Zig ───────────────────────────────────────────────────── */
    #why-zig {
        padding: 4rem 0;
    }

    .why-zig-inner {
        display: grid;
        grid-template-columns: 1fr 2fr;
        gap: 3rem;
        align-items: start;
    }

    .big-zig {
        font-family: 'Syne', sans-serif;
        font-size: 5rem;
        font-weight: 800;
        line-height: 1;
        color: var(--border);
        letter-spacing: -0.04em;
        user-select: none;
    }

    .big-zig span {
        color: var(--accent);
    }

    .why-zig-text p {
        color: var(--muted);
        margin-bottom: 1rem;
        font-size: 0.95rem;
    }

    .why-zig-text p:last-child {
        margin-bottom: 0;
    }

    .why-zig-text strong {
        color: var(--text);
    }

    /* ─── Footer ────────────────────────────────────────────────────── */
    footer {
        border-top: 1px solid var(--border);
        padding: 2rem 0;
    }

    footer .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 1rem;
    }

    .footer-brand {
        font-family: 'Syne', sans-serif;
        font-size: 0.9rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--muted);
    }

    .footer-brand span {
        color: var(--accent);
    }

    .footer-links {
        display: flex;
        gap: 1.5rem;
    }

    .footer-links a {
        font-family: 'Syne', sans-serif;
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--muted);
        transition: color 0.15s;
    }

    .footer-links a:hover {
        color: var(--accent);
        text-decoration: none;
    }

    .footer-author {
        font-family: 'Lora', serif;
        font-size: 0.82rem;
        font-weight: 400;
        letter-spacing: 0;
        text-transform: none;
        color: var(--muted);
        margin-left: 0.5rem;
    }

    .footer-author:hover {
        color: var(--accent);
        text-decoration: none;
    }

    /* ─── Page load animation ───────────────────────────────────────── */
    @keyframes fade-up {
        from {
            opacity: 0;
            transform: translateY(16px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .fade-in {
        animation: fade-up 0.55s ease both;
    }

    .fade-in-1 {
        animation-delay: 0.05s;
    }

    .fade-in-2 {
        animation-delay: 0.15s;
    }

    .fade-in-3 {
        animation-delay: 0.25s;
    }

    .fade-in-4 {
        animation-delay: 0.35s;
    }

    /* ─── Responsive ────────────────────────────────────────────────── */
    @media (max-width: 760px) {
        .container {
            padding: 0 1rem;
        }

        header {
            padding: 2.5rem 0 2rem;
        }

        h1 {
            font-size: clamp(2.4rem, 13vw, 4.5rem);
        }

        h2 {
            font-size: clamp(1.2rem, 6vw, 1.8rem);
        }

        .tagline {
            font-size: 1rem;
        }

        .hero-nav {
            gap: 0.75rem;
        }

        .hero-nav a {
            font-size: 0.72rem;
        }

        .editor-grid {
            grid-template-columns: 1fr;
        }

        .editor-pane {
            min-width: 0;
        }

        .editor-pane+.editor-pane {
            border-left: none;
            border-top: 1px solid var(--border);
        }

        .pane-header {
            flex-wrap: wrap;
            gap: 0.4rem;
            padding: 0.5rem 0.75rem;
        }

        .pane-label {
            font-size: 0.62rem;
        }

        .pane-actions {
            flex-wrap: wrap;
            gap: 0.4rem;
        }

        .stats-bar {
            gap: 0.6rem;
            padding: 0.6rem 0.75rem;
        }

        .stat-pill {
            flex-wrap: wrap;
            gap: 0.35rem;
        }

        .stat-divider {
            display: none;
        }

        .char-table {
            table-layout: fixed;
            width: 100%;
        }

        .char-table th:nth-child(2),
        .char-table td:nth-child(2),
        .char-table th:nth-child(3),
        .char-table td:nth-child(3) {
            display: none;
        }

        .char-table th,
        .char-table td {
            padding: 0.65rem 0.5rem;
        }

        .usage-grid {
            grid-template-columns: 1fr;
        }

        .why-zig-inner {
            grid-template-columns: 1fr;
        }

        .big-zig {
            font-size: 3rem;
        }

        pre.code-block {
            font-size: 0.8rem;
            padding: 0.75rem 0.9rem;
            word-break: break-all;
        }

        footer .container {
            flex-direction: column;
            align-items: flex-start;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: clamp(2rem, 15vw, 3rem);
        }

        .type-badge {
            font-size: 0.55rem;
            padding: 0.12rem 0.35rem;
        }
    }