(function () {
    function byId(id) {
        return document.getElementById(id);
    }

    function updateClock() {
        const dateEl = byId('realtime-date');
        const timeEl = byId('realtime-clock');
        if (!dateEl || !timeEl) return;

        const now = new Date();
        const options = { weekday: 'short', year: 'numeric', month: 'short', day: 'numeric' };
        dateEl.textContent = now.toLocaleDateString(undefined, options).toUpperCase();
        timeEl.textContent = now.toLocaleTimeString();
    }

    setInterval(updateClock, 1000);
    updateClock();

    // Last.fm now-playing widget
    const LASTFM_CACHE_KEY = 'lastfmLastGood';
    const LASTFM_BASE_INTERVAL = 10000;
    const LASTFM_MAX_INTERVAL = 60000;
    let lastfmFailures = 0;
    let lastfmTimer = null;

    function renderLastFmTrack(track) {
        const statusEl = byId('lastfm-status');
        const widgetEl = byId('lastfm-widget');
        if (!statusEl || !track || !track.name || !track.artist) return;
        const prefix = track.nowplaying ? 'Now playing: ' : 'Last played: ';
        statusEl.innerHTML = '';
        const prefixEl = document.createElement('span');
        prefixEl.className = 'lastfm-prefix';
        prefixEl.textContent = prefix;
        const nameEl = document.createElement('span');
        nameEl.className = 'lastfm-track-name';
        nameEl.textContent = track.name;
        const sepEl = document.createElement('span');
        sepEl.className = 'lastfm-sep';
        sepEl.textContent = ' — ';
        const artistEl = document.createElement('span');
        artistEl.className = 'lastfm-track-artist';
        artistEl.textContent = track.artist;
        statusEl.appendChild(prefixEl);
        statusEl.appendChild(nameEl);
        statusEl.appendChild(sepEl);
        statusEl.appendChild(artistEl);
        if (widgetEl) widgetEl.style.display = '';
    }


    (function primeFromCache() {
        try {
            const raw = localStorage.getItem(LASTFM_CACHE_KEY);
            if (raw) renderLastFmTrack(JSON.parse(raw));
        } catch (_) {}
    })();

    function scheduleLastFm() {
        const backoff = Math.min(
            LASTFM_MAX_INTERVAL,
            LASTFM_BASE_INTERVAL * Math.pow(2, lastfmFailures)
        );
        clearTimeout(lastfmTimer);
        lastfmTimer = setTimeout(updateLastFm, backoff);
    }

    function updateLastFm() {
        const statusEl = byId('lastfm-status');
        if (!statusEl) return;

        fetch('/api/lastfm.php')
            .then(function (r) {
                if (!r.ok) throw new Error('HTTP ' + r.status);
                return r.json();
            })
            .then(function (data) {
                if (data && data.error) throw new Error(data.message || 'api error');
                const tracks = Array.isArray(data) ? data : [];
                // Prefer a currently-playing track; otherwise fall back to the most
                // recent scrobble so the widget always has something to show.
                const track = tracks.find(function (t) { return t && t.nowplaying; })
                           || tracks.find(function (t) { return t && t.name; })
                           || null;
                if (track) {
                    renderLastFmTrack(track);
                    try { localStorage.setItem(LASTFM_CACHE_KEY, JSON.stringify(track)); } catch (_) {}
                }
                lastfmFailures = 0;
            })
            .catch(function () {
                // Never show an error message. Keep whatever is currently rendered
                // (primed from localStorage on load), or leave the slot blank.
                lastfmFailures++;
            })
            .finally(scheduleLastFm);
    }

    updateLastFm();

    document.addEventListener('visibilitychange', function () {
        if (document.visibilityState === 'visible') {
            lastfmFailures = 0;
            updateLastFm();
        }
    });

    // Unified search engine switcher
    const SEARCH_ENGINES = [
        { key: 'google',    label: 'G',  title: 'Google Search..',     placeholder: 'Search Google...',    action: 'https://www.google.ca/search',       param: 'q', site: 'https://www.google.ca' },
        { key: 'brave',     label: 'B',  title: 'Brave Search..',      placeholder: 'Search Brave...',     action: 'https://search.brave.com/search',    param: 'q', site: 'https://search.brave.com' },
        { key: 'startpage', label: 'SP', title: 'Startpage Search..',  placeholder: 'Search Startpage...', action: 'https://www.startpage.com/sp/search', param: 'query', site: 'https://www.startpage.com' },
        { key: 'youtube',   label: 'YT', title: 'YouTube Search..',    placeholder: 'Search YouTube...',   action: 'https://www.youtube.com/results',    param: 'search_query', site: 'https://www.youtube.com' },
        { key: 'sillylaird',label: 'SL', title: 'SillyLaird Search..', placeholder: 'Search SillyLaird...', action: 'https://search.sillylaird.ca/search', param: 'q', site: 'https://search.sillylaird.ca' },
        { key: '4get',      label: '4G', title: '4get Search..',       placeholder: 'Search 4get...',       action: 'https://4get.sillylaird.ca/web',      param: 's', site: 'https://4get.sillylaird.ca' }
    ];
    const SEARCH_ENGINE_KEY = 'startpageSearchEngine_v2';

    (function initUnifiedSearch() {
        const form = byId('unified-search-form');
        const input = byId('unified-search-input');
        const toggle = byId('search-engine-toggle');
        const menu = byId('search-engine-menu');
        const title = byId('unified-search-title');
        const clearBtn = byId('unified-search-clear');
        if (!form || !input || !toggle || !menu) return;

        function syncClear() {
            if (!clearBtn) return;
            clearBtn.hidden = input.value.length === 0;
        }
        if (clearBtn) {
            input.addEventListener('input', syncClear);
            clearBtn.addEventListener('click', function () {
                input.value = '';
                syncClear();
                input.focus();
            });
            syncClear();
        }

        let idx = 0;
        try {
            const saved = localStorage.getItem(SEARCH_ENGINE_KEY);
            if (saved) {
                const savedIdx = SEARCH_ENGINES.findIndex(function (e) { return e.key === saved; });
                if (savedIdx >= 0) idx = savedIdx;
            } else {
                idx = SEARCH_ENGINES.findIndex(function (e) { return e.key === 'google'; });
            }
        } catch (_) {
            idx = SEARCH_ENGINES.findIndex(function (e) { return e.key === 'google'; });
        }
        if (idx < 0) idx = 0;

        SEARCH_ENGINES.forEach(function (e, i) {
            const li = document.createElement('li');
            li.setAttribute('role', 'option');
            li.dataset.index = String(i);
            li.innerHTML = '<span class="engine-icon"></span><span class="engine-name"></span>';
            li.querySelector('.engine-icon').textContent = e.label;
            li.querySelector('.engine-name').textContent = e.title.replace(/\.\.$/, '');
            li.addEventListener('click', function () {
                idx = i;
                apply(idx);
                closeMenu();
                input.focus();
            });
            menu.appendChild(li);
        });

        function apply(i) {
            const e = SEARCH_ENGINES[i];
            form.setAttribute('action', e.action);
            input.setAttribute('name', e.param);
            input.setAttribute('placeholder', e.placeholder);
            toggle.innerHTML = '';
            toggle.appendChild(document.createTextNode(e.label + ' '));
            const caret = document.createElement('span');
            caret.className = 'search-engine-caret';
            caret.textContent = '▾';
            toggle.appendChild(caret);
            toggle.setAttribute('title', 'Search engine: ' + e.title);
            if (title) {
                title.innerHTML = '<a href="' + e.site + '" target="_blank" rel="noopener noreferrer">' + e.title + '</a>';
            }
            Array.prototype.forEach.call(menu.children, function (li, li_i) {
                li.setAttribute('aria-selected', li_i === i ? 'true' : 'false');
            });
            try { localStorage.setItem(SEARCH_ENGINE_KEY, e.key); } catch (_) {}
        }

        function openMenu() {
            menu.hidden = false;
            toggle.setAttribute('aria-expanded', 'true');
        }
        function closeMenu() {
            menu.hidden = true;
            toggle.setAttribute('aria-expanded', 'false');
        }

        toggle.addEventListener('click', function (ev) {
            ev.stopPropagation();
            if (menu.hidden) openMenu(); else closeMenu();
        });

        document.addEventListener('click', function (ev) {
            if (menu.hidden) return;
            if (ev.target === toggle || toggle.contains(ev.target)) return;
            if (menu.contains(ev.target)) return;
            closeMenu();
        });

        document.addEventListener('keydown', function (ev) {
            if (ev.key === 'Escape' && !menu.hidden) closeMenu();
        });

        apply(idx);
    })();

})();  // close the main outer IIFE that wraps clock/lastfm/unified/etc.

    // Live card filter (works on data-attrs emitted by render_cards.php)
    (function initCardFilter() {
        const byId = (id) => document.getElementById(id);
        const filterInput = byId('card-filter');
        const grid = byId('cards-grid');
        const countEl = byId('card-filter-count');
        if (!filterInput || !grid) return;

        const cards = Array.from(grid.querySelectorAll('.card'));
        if (!cards.length) return;

        // Ensure clean state (in case of previous inline or classes)
        cards.forEach(function (c) { c.classList.remove('hidden'); });

        // Debug (open console if needed): console.log('[startpage filter] initialized with', cards.length, 'cards');

        function normalize(s) {
            return (s || '').toLowerCase().trim();
        }

        function applyFilter() {
            const q = normalize(filterInput.value);
            let visible = 0;
            cards.forEach(function (card) {
                const title = normalize(card.dataset.title);
                const labels = normalize(card.dataset.labels);
                const hay = title + ' ' + labels;
                const match = !q || hay.indexOf(q) !== -1;
                card.classList.toggle('hidden', !match);
                if (match) visible++;
            });
            if (countEl) {
                countEl.textContent = q ? (visible + ' / ' + cards.length) : '';
            }
        }

        filterInput.addEventListener('input', applyFilter);

        // Keyboard: '/' focuses the card filter (when not in input already)
        document.addEventListener('keydown', function (e) {
            const ae = document.activeElement;
            const isTyping = ae && (ae.tagName === 'INPUT' || ae.tagName === 'TEXTAREA' || ae.isContentEditable);
            if (e.key === '/' && !isTyping) {
                e.preventDefault();
                filterInput.focus();
                filterInput.select();
            }
            if (e.key === 'Escape' && ae === filterInput) {
                filterInput.value = '';
                applyFilter();
                filterInput.blur();
            }
        });

        // Initial
        applyFilter();
    })();

    // Keyboard help overlay (?)
    (function initKeyboardHelp() {
        document.addEventListener('keydown', function (e) {
            if (e.key === '?' && !e.shiftKey) {
                const ae = document.activeElement;
                if (ae && (ae.tagName === 'INPUT' || ae.tagName === 'TEXTAREA' || ae.isContentEditable)) return;
                e.preventDefault();
                let help = document.getElementById('kbd-help');
                if (!help) {
                    help = document.createElement('div');
                    help.id = 'kbd-help';
                    help.style.cssText = 'position:fixed;bottom:12px;right:12px;background:#111;border:1px solid #8b0000;padding:10px 14px;font-size:0.8rem;z-index:999;color:#8b0000;max-width:280px;line-height:1.5;';
                    help.innerHTML = '<strong>Keyboard</strong><br>/ — focus card filter<br>Esc — clear / close<br>? — toggle this<br>Click engine picker or cards<br>Theme toggle in header';
                    document.body.appendChild(help);
                    const remover = function (ev) {
                        if (ev.key === '?' || ev.key === 'Escape') {
                            help.remove();
                            document.removeEventListener('keydown', remover);
                        }
                    };
                    document.addEventListener('keydown', remover);
                } else {
                    help.remove();
                }
            }
        });
    })();

/* Click-to-open cascading Sports menu (left click toggles, like a context menu) */
document.querySelectorAll('.ctx-menu').forEach(function (menu) {
    function closeAll() {
        menu.querySelectorAll('.ctx-parent.open').forEach(function (p) {
            p.classList.remove('open');
        });
    }

    // A "trigger" is any element that owns a flyout: the Sports root or a category label
    menu.querySelectorAll('.ctx-trigger, .ctx-has-sub').forEach(function (trigger) {
        trigger.addEventListener('click', function (e) {
            e.preventDefault();
            e.stopPropagation();
            const parent = trigger.closest('.ctx-parent');
            const wasOpen = parent.classList.contains('open');
            // close siblings at the same level
            const siblings = parent.parentElement.querySelectorAll(':scope > .ctx-parent.open');
            siblings.forEach(function (s) { if (s !== parent) s.classList.remove('open'); });
            // toggle this one (also closes its descendants when collapsing)
            if (wasOpen) {
                parent.classList.remove('open');
                parent.querySelectorAll('.ctx-parent.open').forEach(function (d) { d.classList.remove('open'); });
            } else {
                parent.classList.add('open');
                positionFlyout(parent);
            }
        });
    });

    // Place a category's (fixed-position) link list beside its label, cascading right,
    // flipping left / clamping when it would run off a screen edge.
    // Skips the root dropdown (direct child of .ctx-root), which CSS drops straight down.
    function positionFlyout(parent) {
        const flyout = parent.querySelector(':scope > .ctx-flyout');
        if (!flyout || parent.parentElement.classList.contains('ctx-root')) return;

        const label = parent.getBoundingClientRect();
        const box = parent.parentElement.getBoundingClientRect(); // the whole menu box (incl. scrollbar)
        const fw = flyout.offsetWidth;
        const fh = flyout.offsetHeight;
        const margin = 4;
        const gap = 2;

        // Top-right menus cascade LEFT (toward screen centre); everything else cascades right.
        // Flip to the other side only when the preferred side runs off the viewport edge.
        const openLeft = parent.closest('.top-right-links') !== null;
        let left;
        if (openLeft) {
            left = box.left - fw - gap; // open to the left of the whole box
            if (left < margin) {
                left = box.right + gap; // no room left: flip to the right
            }
        } else {
            left = box.right + gap; // top-left menus only ever cascade right (match the ▶ arrow)
        }
        if (left < margin) left = margin;
        if (left + fw > window.innerWidth - margin) left = window.innerWidth - fw - margin;

        // align top with the label, clamp into the viewport
        let top = label.top;
        if (top + fh > window.innerHeight - margin) {
            top = Math.max(margin, window.innerHeight - fh - margin);
        }

        flyout.style.left = left + 'px';
        flyout.style.top = top + 'px';
    }

    // Clicking a real link closes the whole menu
    menu.querySelectorAll('a.ctx-item').forEach(function (a) {
        a.addEventListener('click', closeAll);
    });

    // Scrolling the category list closes any open (fixed) submenu so it can't float detached
    const rootFlyout = menu.querySelector('.ctx-root > .ctx-parent > .ctx-flyout');
    if (rootFlyout) {
        rootFlyout.addEventListener('scroll', function () {
            rootFlyout.querySelectorAll(':scope > .ctx-parent.open').forEach(function (p) {
                p.classList.remove('open');
            });
        });
    }

    // Click outside closes everything
    document.addEventListener('click', function (e) {
        if (!menu.contains(e.target)) closeAll();
    });
});

/* Auto-extend the red section box so it always contains the absolutely-positioned link columns */
(function () {
    function fitSectionToLinks() {
        const section = document.querySelector('.search-section');
        if (!section) return;
        const groups = section.querySelectorAll('.top-left-links, .top-right-links');
        let needed = 0;
        groups.forEach(function (g) {
            // offsetTop (relative to section) + full height of the link column
            needed = Math.max(needed, g.offsetTop + g.offsetHeight);
        });
        // small breathing room below the last link
        section.style.minHeight = needed > 0 ? (needed + 20) + 'px' : '';
    }

    window.addEventListener('load', fitSectionToLinks);
    window.addEventListener('resize', fitSectionToLinks);
    if (document.readyState === 'complete') fitSectionToLinks();
})();

/* Subtle terminal boot sequence on first visit per session */
(function () {
    var overlay = document.getElementById('boot-overlay');
    var logEl = document.getElementById('boot-log');
    var body = document.body;
    if (!overlay || !logEl) return;

    var skipBoot = window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
    if (skipBoot || sessionStorage.getItem('startpageBooted') === '1') {
        overlay.hidden = true;
        body.classList.remove('startpage-booting');
        body.classList.add('startpage-ready');
        return;
    }

    /* OpenBSD /etc/rc prints plain lines, no OpenRC stars or [ ok ] brackets. */
    var steps = [
        'savecore: no core dump',
        'checking quotas: done.',
        'mounting /startpage/cards.txt',
        'starting network daemons: sshd httpd sndiod.',
        'starting local daemons: cron scrobbler.',
        'bringing up the Wired.'
    ];
    var idx = 0;

    function el(tag, cls, text) {
        var n = document.createElement(tag);
        if (cls) n.className = cls;
        if (text) n.textContent = text;
        return n;
    }

    /* The overlay never scrolls (CSS overflow:hidden), so the log has to fit.
       Measure the untransformed layout size (scrollWidth/Height ignore the
       transform) against the overlay's content box and scale down to fit.
       Runs after every append and on resize/orientation change. */
    /* body{overflow:hidden} only reaches the viewport if the UA propagates it,
       and here it does not — the document stayed scrollable behind the overlay.
       Lock the root directly; CSS does the same via :has for pre-JS paint. */
    var rootStyle = document.documentElement.style;
    var prevRootOverflow = rootStyle.overflow;
    rootStyle.overflow = 'hidden';

    var fitRaf = 0;
    function fitBootLog() {
        fitRaf = 0;
        var cs = window.getComputedStyle(overlay);
        var availW = overlay.clientWidth
            - parseFloat(cs.paddingLeft) - parseFloat(cs.paddingRight);
        var availH = overlay.clientHeight
            - parseFloat(cs.paddingTop) - parseFloat(cs.paddingBottom);
        if (availW <= 0 || availH <= 0) return;

        logEl.style.transform = 'none';
        var w = logEl.scrollWidth;
        var h = logEl.scrollHeight;
        if (!w || !h) return;

        var scale = Math.min(1, availW / w, availH / h);
        logEl.style.transform = scale < 1 ? 'scale(' + scale + ')' : 'none';
    }

    function scheduleFit() {
        if (fitRaf) return;
        fitRaf = window.requestAnimationFrame(fitBootLog);
    }

    window.addEventListener('resize', scheduleFit);
    window.addEventListener('orientationchange', scheduleFit);

    var OPENBSD_WORDMARK =
        '   ____                   ____ _____ ____' + '\n' +
        '  / __ \\____  ___  ____  / __ ) ___// __ \\' + '\n' +
        ' / / / / __ \\/ _ \\/ __ \\/ __  \\__ \\/ / / /' + '\n' +
        '/ /_/ / /_/ /  __/ / / / /_/ /__/ / /_/ /' + '\n' +
        '\\____/ .___/\\___/_/ /_/_____/____/_____/' + '\n' +
        '    /_/';

    var PUFFY_ASCII =
        '                                        _' + '\n' +
        '                                       (_)' + '\n' +
        '              |    .' + '\n' +
        '          .   |L  /|   .          _' + '\n' +
        '      _ . |\\ _| \\--+._/| .       (_)' + '\n' +
        '     / ||\\| Y J  )   / |/| ./' + '\n' +
        '    J  |)\'( |        ` F`.\'/        _' + '\n' +
        '  -<|  F         __     .-<        (_)' + '\n' +
        '    | /       .-\'. `.  /-. L___' + '\n' +
        '    J \\      <    \\  | | O\\|.-\'  _' + '\n' +
        '  _J \\  .-    \\/ O | | \\  |F    (_)' + '\n' +
        ' \'-F  -<_.     \\   .-\'  `-\' L__' + '\n' +
        '__J  _   _.     >-\'  )._.   |-\'' + '\n' +
        ' `-|.\'   /_.          \\_|   F' + '\n' +
        '  /.-   .                _.<' + '\n' +
        ' /\'    /.\'             .\'  `\\' + '\n' +
        '  /L  /\'   |/      _.-\'-\\' + '\n' +
        ' /\'J       ___.---\'\\|' + '\n' +
        '   |\\  .--\' V  | `. `' + '\n' +
        '   |/`. `-.     `._)' + '\n' +
        '      / .-.\\' + '\n' +
        '      \\ (  `\\' + '\n' +
        '       `.\\';

    var avatar = el('img', 'boot-avatar');
    avatar.src = '/assets/img/lain.png';
    avatar.alt = '';
    avatar.width = 96;
    avatar.height = 96;

    /* Lain sits directly above Puffy's bubble column (the `(_)` marks on the
       right of the ASCII), so the bubbles read as rising toward her. */
    var puffyWrap = el('div', 'boot-puffy-wrap');
    puffyWrap.appendChild(avatar);
    puffyWrap.appendChild(el('pre', 'boot-puffy-ascii', PUFFY_ASCII));

    var asciiWrap = el('div', 'boot-ascii-wrap');
    asciiWrap.appendChild(puffyWrap);
    asciiWrap.appendChild(el('pre', 'boot-openbsd-wordmark', OPENBSD_WORDMARK));
    logEl.appendChild(asciiWrap);
    fitBootLog();
    /* lain.png may land after first layout and change the log's height. */
    avatar.addEventListener('load', scheduleFit);

    /* Prefer the version cached by tools/update_openbsd_version.sh (cron pulls
       openbsd.org). Fallback: OpenBSD ships ~1 May and ~1 Nov, rolling
       x.9 -> (x+1).0; anchor 7.9 = May 2026 so the banner never goes stale. */
    function openbsdRelease() {
        var cached = (typeof window.OPENBSD_RELEASE === 'string')
            ? window.OPENBSD_RELEASE.trim() : '';
        if (/^\d+\.\d+$/.test(cached)) return cached;

        var now = new Date();
        var m = now.getMonth();
        var halves = (now.getFullYear() - 2026) * 2 + (m >= 10 ? 1 : (m >= 4 ? 0 : -1));
        var minor = 9 + halves;
        return (7 + Math.floor(minor / 10)) + '.' + (minor % 10);
    }

    logEl.appendChild(el('div', 'boot-title',
        'OpenBSD ' + openbsdRelease() + ' (GENERIC.MP) #1: sillylaird.ca — amd64'));
    fitBootLog();

    function finishBoot() {
        if (fitRaf) window.cancelAnimationFrame(fitRaf);
        rootStyle.overflow = prevRootOverflow;
        window.removeEventListener('resize', scheduleFit);
        window.removeEventListener('orientationchange', scheduleFit);
        sessionStorage.setItem('startpageBooted', '1');
        overlay.hidden = true;
        body.classList.remove('startpage-booting');
        body.classList.add('startpage-ready');
    }

    function fadeOut() {
        overlay.classList.add('boot-fade');
        window.setTimeout(finishBoot, 380);
    }

    function showPrompt() {
        var prompt = el('div', 'boot-login');
        prompt.appendChild(el('span', 'boot-user', 'sillylaird@Navi'));
        prompt.appendChild(el('span', null, ':'));
        prompt.appendChild(el('span', 'boot-path', '~'));
        prompt.appendChild(el('span', null, '$ '));
        prompt.appendChild(el('span', 'boot-cursor', '█'));
        logEl.appendChild(prompt);
        fitBootLog();
        window.setTimeout(fadeOut, 420);
    }

    function typeLogin() {
        var login = el('div', 'boot-login');
        var label = el('span', 'boot-dim', 'Navi login: ');
        var typed = el('span', null, '');
        var cursor = el('span', 'boot-cursor', '█');
        login.appendChild(label);
        login.appendChild(typed);
        login.appendChild(cursor);
        logEl.appendChild(login);
        fitBootLog();

        var name = 'sillylaird';
        var i = 0;
        function typeChar() {
            if (i < name.length) {
                typed.textContent += name.charAt(i);
                fitBootLog();
                i += 1;
                window.setTimeout(typeChar, 70);
                return;
            }
            cursor.remove();
            window.setTimeout(function () {
                logEl.appendChild(el('div', 'boot-login boot-dim',
                    'Password: '));
                logEl.appendChild(el('div', 'boot-dim',
                    'Welcome to OpenBSD: The proactively secure Unix-like operating system.'));
                fitBootLog();
                window.setTimeout(showPrompt, 240);
            }, 180);
        }
        window.setTimeout(typeChar, 150);
    }

    function nextLine() {
        if (idx >= steps.length) {
            typeLogin();
            return;
        }
        var line = el('div', 'boot-line');
        var left = el('span', 'boot-svc', steps[idx]);
        line.appendChild(left);
        logEl.appendChild(line);
        fitBootLog();
        idx += 1;
        window.setTimeout(nextLine, idx === 1 ? 110 : 130);
    }

    window.setTimeout(nextLine, 140);
})();

/* Comfortable line spacing — synced with site-wide comfort toggle (header ↕) */
(function () {
    var KEY = 'siteComfortSpacing_v1';
    var btn = document.getElementById('comfort-toggle');
    var body = document.body;
    if (!btn) return;

    function apply(on) {
        body.classList.toggle('startpage-comfort', on);
        body.classList.toggle('comfort-spacing', on);
        // Keep the header icon button compact (do not replace ↕ with long text).
        btn.setAttribute('aria-pressed', on ? 'true' : 'false');
        btn.setAttribute('title', on ? 'Comfort spacing: ON' : 'Comfort spacing: OFF');
        btn.setAttribute('aria-label', on ? 'Comfort spacing on' : 'Comfort spacing off');
    }

    // Use comfortable spacing unless this browser has explicitly opted out.
    apply(localStorage.getItem(KEY) !== '0');

    btn.addEventListener('click', function () {
        var next = !body.classList.contains('startpage-comfort');
        localStorage.setItem(KEY, next ? '1' : '0');
        apply(next);
    });
})();

/* Konaste / BEMANI PC maintenance status — computed client-side from the fixed
   e-amusement schedule (shared backend, so both games share windows):
     - Daily maintenance 05:00–07:00 JST
     - Extended maintenance 02:00–07:00 JST on the 3rd Tuesday of the month
   JST is a fixed UTC+9 offset (no DST). Display times use the timezone
   configured on the viewer's computer/browser. */
(function () {
    var root = document.getElementById('konaste-status');
    if (!root) return;

    var JST_OFFSET_MS = 9 * 3600 * 1000;
    var DISPLAY_TIME_ZONE = Intl.DateTimeFormat().resolvedOptions().timeZone;

    // JST wall-clock fields for a real Date.
    function jstFields(date) {
        var j = new Date(date.getTime() + JST_OFFSET_MS);
        return {
            y: j.getUTCFullYear(),
            mo: j.getUTCMonth(),
            d: j.getUTCDate(),
            dow: j.getUTCDay()
        };
    }

    // Real epoch ms for a JST wall-clock instant.
    function jstToEpoch(y, mo, d, h, m) {
        return Date.UTC(y, mo, d, h, m) - JST_OFFSET_MS;
    }

    // 3rd Tuesday => Tuesday (dow 2) with day-of-month 15..21.
    function isThirdTuesday(f) {
        return f.dow === 2 && f.d >= 15 && f.d <= 21;
    }

    // Maintenance window [start, end) in real epoch ms for the JST calendar day
    // that a given JST-field set falls on. offsetDays shifts that day.
    function windowFor(baseFields, offsetDays) {
        var day = new Date(Date.UTC(baseFields.y, baseFields.mo, baseFields.d + offsetDays));
        var f = { y: day.getUTCFullYear(), mo: day.getUTCMonth(), d: day.getUTCDate(), dow: day.getUTCDay() };
        var startHour = isThirdTuesday(f) ? 2 : 5;
        return {
            start: jstToEpoch(f.y, f.mo, f.d, startHour, 0),
            end: jstToEpoch(f.y, f.mo, f.d, 7, 0),
            extended: isThirdTuesday(f)
        };
    }

    function pad2(n) { return n < 10 ? '0' + n : '' + n; }

    function fmtLocal(epoch) {
        var d = new Date(epoch);
        try {
            var formatted = new Intl.DateTimeFormat(navigator.language || undefined, {
                weekday: 'short', hour: '2-digit', minute: '2-digit',
                timeZone: DISPLAY_TIME_ZONE
            }).format(d);
            return formatted;
        } catch (e) {
            return d.toLocaleString();
        }
    }

    function fmtCountdown(ms) {
        var total = Math.max(0, Math.floor(ms / 60000));
        var h = Math.floor(total / 60);
        var m = total % 60;
        if (h > 0) return h + 'h ' + m + 'm';
        return m + 'm';
    }

    // Determine status at the current moment.
    function compute(now) {
        var f = jstFields(now);
        var t = now.getTime();
        // Today's window plus the previous day's (guards a window that we might
        // still be inside just after JST midnight — none currently cross it, but
        // this keeps the logic correct if hours ever change).
        var candidates = [windowFor(f, -1), windowFor(f, 0)];
        for (var i = 0; i < candidates.length; i++) {
            var w = candidates[i];
            if (t >= w.start && t < w.end) {
                return { online: false, window: w, until: w.end };
            }
        }
        // Online: find the next upcoming window start.
        var next = null;
        for (var d = 0; d <= 40; d++) {
            var w2 = windowFor(f, d);
            if (w2.start > t) { next = w2; break; }
        }
        return { online: true, next: next };
    }

    // Live local clock — hour / minute / second kept in separate fields, ticks in
    // real time using the computer's connected timezone.
    function renderClock(now) {
        var el = document.getElementById('konaste-clock');
        if (!el) return;
        var h = el.querySelector('[data-clock="h"]');
        var m = el.querySelector('[data-clock="m"]');
        var s = el.querySelector('[data-clock="s"]');
        var ap = el.querySelector('[data-clock="ap"]');
        var parts = new Intl.DateTimeFormat('en-US', {
            timeZone: DISPLAY_TIME_ZONE,
            hour: '2-digit', minute: '2-digit', second: '2-digit', hour12: true
        }).formatToParts(now);
        var clockParts = {};
        for (var i = 0; i < parts.length; i++) clockParts[parts[i].type] = parts[i].value;
        if (h) h.textContent = clockParts.hour || '--';
        if (m) m.textContent = clockParts.minute || '--';
        if (s) s.textContent = clockParts.second || '--';
        if (ap) ap.textContent = clockParts.dayPeriod || '';
        var tz = root.querySelector('[data-clock="tz"]');
        if (tz) tz.textContent = '';
    }

    // Single shared online/offline line — pop'n Lively and GITADORA use the same
    // e-amusement maintenance window, so one status covers both.
    function renderStatus(now) {
        var state = compute(now);
        var row = root.querySelector('.konaste-game');
        if (!row) return;
        var dot = row.querySelector('[data-role="dot"]');
        var text = row.querySelector('[data-role="text"]');
        var cd = row.querySelector('[data-role="countdown"]');

        dot.className = 'konaste-dot';
        cd.textContent = '';

        if (!state.online) {
            dot.classList.add('is-maintenance');
            text.textContent = (state.window.extended ? 'Extended maintenance' : 'Under maintenance') +
                '\nStarted: ' + fmtLocal(state.window.start) +
                '\nEnds: ' + fmtLocal(state.window.end);
            cd.textContent = 'Remaining: ' + fmtCountdown(state.until - now.getTime());
        } else {
            dot.classList.add('is-online');
            text.textContent = 'Online • play now';
            if (state.next) {
                text.textContent += '\nNext maintenance: ' + fmtLocal(state.next.start) +
                    ' to ' + fmtLocal(state.next.end);
                cd.textContent = 'Starts in: ' + fmtCountdown(state.next.start - now.getTime());
            }
        }
    }

    function tick() {
        var now = new Date();
        renderClock(now);
        renderStatus(now);
    }

    tick();
    setInterval(tick, 1000);
    document.addEventListener('visibilitychange', function () {
        if (!document.hidden) tick();
    });
})();