/* FreeFlashlight.org — "Hardware store" design, 2026 */
:root {
  --bg: #1d1d1b;
  --bg-2: #252523;
  --card: #2b2b28;
  --card-2: #34342f;
  --line: #3a3a36;
  --text: #ecebe6;
  --muted: #a9a8a2;
  --accent: #f2c200;
  --accent-2: #c79f00;
  --accent-ink: #121211;
  --ink: #121211;
  --danger: #d9443a;
  --tape: #0d0d0c;
  --tape-red: #a3241d;
  --tape-blue: #1f4e8c;
  --tape-green: #2f6b3a;
  --radius: 6px;
  --radius-sm: 4px;
  --font: "Archivo", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --display: "Archivo Black", "Arial Black", Impact, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 var(--font); }
img { max-width: 100%; height: auto; }
a { color: var(--accent); }
a:hover { color: #fff; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; font-family: var(--display); font-weight: 400; letter-spacing: .005em; }
p { margin: 0 0 1em; }
button, input, select { font: inherit; color: inherit; }
.kbd { display: inline-block; padding: 0 5px; border: 1px solid var(--line); border-bottom-width: 3px; border-radius: 3px; font: 700 12px/1.6 var(--mono); color: var(--text); background: var(--bg); }

/* ---------- Header ---------- */
.site-header { position: relative; z-index: 50; background: var(--ink); }
.site-header .inner { max-width: 1200px; margin: 0 auto; padding: 0 16px; min-height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--accent); font: 19px/1 var(--display); white-space: nowrap; }
.brand:hover { color: var(--accent); }
.brand-mark { width: 28px; height: 28px; flex: none; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 2px; }
.site-nav a { display: block; padding: 8px 10px; font: 700 13px/1 var(--mono); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); text-decoration: none; border-bottom: 3px solid transparent; }
.site-nav a:hover { color: #fff; }
.site-nav a.active { color: #fff; border-bottom-color: var(--accent); }
.hazard { height: 10px; background: repeating-linear-gradient(-45deg, var(--accent) 0 12px, var(--ink) 12px 24px); }
@media (max-width: 720px) { .site-nav .nav-extra { display: none; } }
@media (max-width: 420px) { .brand span { display: none; } .site-nav a { padding: 8px 8px; font-size: 12px; } }

/* ---------- Ads ---------- */
.ad { max-width: 1200px; margin: 12px auto; padding: 0 16px; text-align: center; position: relative; z-index: 1; }
.ad-label { display: block; font: 500 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: #77766f; margin-bottom: 5px; }
.ad-top { min-height: 100px; }
.ad-rect { min-height: 270px; }
.tool-card .ad { padding: 0; margin: 16px 0; }
.ad-inline { margin: 22px 0; padding: 0; min-height: 100px; }

/* ---------- Layout ---------- */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
main, .site-footer { position: relative; z-index: 1; }
.page-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
@media (max-width: 900px) { .page-grid { grid-template-columns: 1fr; } }
.glass, .card { background: var(--bg-2); border: 2px solid var(--line); border-radius: var(--radius); }
.card { padding: 16px 18px; margin: 16px 0; }

/* The light: a canvas behind the whole page, like the original site */
.light-canvas { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100dvh; z-index: 0; pointer-events: none; display: block; }
body.light-on { background: #000; }
body.immersive { overflow: hidden; }
body.immersive .light-canvas { z-index: 2147483000; pointer-events: auto; }

/* ---------- Tool card ---------- */
.tool-card { padding: 18px; }
.hero { display: flex; align-items: center; gap: 12px; }
.bulb { width: 46%; max-width: 200px; flex: none; }
.kicker { display: block; font: 500 12px/1.3 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 6px; }
.hero h1 { font-size: clamp(24px, 4.4vw, 38px); text-transform: uppercase; margin: 0; }
@media (max-width: 420px) { .bulb { width: 38%; } .kicker { font-size: 11px; } }
.lead { color: #cfcec7; margin: 12px 0 14px; }

.plate {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 18px 20px; border-radius: var(--radius); background: var(--card); border: 2px solid var(--line);
}
.screw { position: absolute; width: 8px; height: 8px; border-radius: 50%; background: #4a4a46; box-shadow: inset 0 1px 0 #5c5c57; }
.screw::after { content: ""; position: absolute; left: 1px; right: 1px; top: 3.5px; height: 1px; background: #2b2b28; transform: rotate(35deg); }
.screw.tl { left: 8px; top: 8px; } .screw.br { right: 8px; bottom: 8px; }
.plate-label { font: 500 12px/1.5 var(--mono); text-transform: uppercase; color: var(--muted); }
.power-btn {
  flex: 1 1 auto; max-width: 270px; min-height: 76px; padding: 0 16px; cursor: pointer;
  border: 0; border-radius: var(--radius); background: var(--accent); color: var(--ink);
  font: 22px/1.1 var(--display); text-transform: uppercase;
  box-shadow: inset 0 -10px 0 var(--accent-2), 0 3px 0 #000;
  transition: transform .06s ease, box-shadow .06s ease;
}
.power-btn:active { transform: translateY(3px); box-shadow: inset 0 -6px 0 var(--accent-2), 0 0 0 #000; }
.power-btn[aria-pressed="true"] { background: #fff; box-shadow: inset 0 -10px 0 #cfcfc8, 0 3px 0 #000; }
.power-btn:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }

.quick-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: space-between; margin: 14px 0 10px; }
.link-btn { font: 700 14px/1 var(--mono); text-transform: uppercase; text-decoration: none; padding: 12px 0; }

.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; min-height: 44px; font: 700 13px/1.2 var(--mono); text-transform: uppercase; color: var(--muted); position: relative; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch .track { width: 52px; height: 26px; background: var(--ink); border: 2px solid #4a4a46; position: relative; flex: none; order: 2; }
.switch .track::after { content: ""; position: absolute; left: 2px; top: 2px; width: 20px; height: 18px; background: var(--muted); transition: transform .15s ease, background .15s ease; }
.switch input:checked + .track { border-color: var(--accent); }
.switch input:checked + .track::after { transform: translateX(24px); background: var(--accent); }
.switch input:focus-visible + .track { outline: 2px solid #fff; outline-offset: 2px; }
.switch.small { font-size: 12px; }
.switch.small .track { order: -1; }
.status { font: 500 13px/1.5 var(--mono); color: var(--accent); margin: 0 0 8px; }
.status:empty { display: none; }

/* Try-next card (shown after the light goes off) */
.next-card { margin: 12px 0; padding: 12px; border: 2px solid var(--accent); border-radius: var(--radius); background: var(--ink); }
.next-card[hidden] { display: none; }
.next-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-size: 16px; }
.next-close { width: 36px; height: 36px; border: 0; background: var(--card); color: var(--text); font-size: 20px; cursor: pointer; border-radius: var(--radius-sm); }
.next-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.next-grid a { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 8px 10px; background: var(--card); border-radius: var(--radius-sm); color: var(--text); text-decoration: none; font-weight: 700; font-size: 15px; }
.next-grid a:hover { background: var(--card-2); }
.chip { width: 28px; height: 28px; flex: none; border-radius: 3px; border: 1px solid #000; }

/* ---------- Modes as label-maker tape ---------- */
.mode-grid { display: flex; flex-wrap: wrap; gap: 9px; margin: 6px 0; }
.mode {
  display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 6px 11px;
  border: 0; border-radius: 1px; background: var(--tape); color: #fff; cursor: pointer;
  font: 700 13px/1.1 var(--mono); text-transform: uppercase; letter-spacing: .1em; text-align: left;
  box-shadow: 0 2px 0 rgba(0,0,0,.45); transform: rotate(-1deg);
}
.mode:nth-child(3n+2) { transform: rotate(.8deg); }
.mode:nth-child(3n) { transform: rotate(-.4deg); }
.mode:hover { background: #22221f; }
.mode[aria-pressed="true"] { background: var(--accent); color: var(--ink); }
.mode-swatch { width: 16px; height: 16px; flex: none; border-radius: 2px; border: 1px solid rgba(255,255,255,.35); position: relative; }
.mode-flash::after { content: "!"; position: absolute; right: -6px; top: -7px; width: 12px; height: 12px; border-radius: 50%; background: var(--danger); color: #fff; font: 700 9px/12px var(--mono); text-align: center; }
.mode-name { white-space: nowrap; }
.mode-grid-quick { min-height: 98px; }
.more-modes { margin-top: 8px; }
.more-modes > summary { cursor: pointer; font: 700 14px/1 var(--mono); text-transform: uppercase; color: var(--accent); padding: 12px 0; list-style: none; }
.more-modes > summary::-webkit-details-marker { display: none; }
.more-modes > summary::after { content: " +"; }
.more-modes[open] > summary::after { content: " –"; }
.mode-group { margin-top: 10px; }
.mode-group-title { font: 700 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
.mode-desc { color: #cfcec7; font-size: 15px; margin: 12px 0 4px; min-height: 2.4em; }
.mode-desc strong { font-family: var(--mono); text-transform: uppercase; font-size: 13px; letter-spacing: .06em; color: var(--accent); }

/* ---------- Settings as a spec sheet ---------- */
.settings { border-top: 2px dashed var(--line); margin-top: 12px; padding-top: 12px; display: grid; gap: 14px; }
.field label, .field .field-label { display: flex; justify-content: space-between; font: 700 12px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 6px; }
.field output { color: var(--text); }
.field[hidden] { display: none; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 30px; background: transparent; cursor: pointer; }
input[type=range]::-webkit-slider-runnable-track { height: 6px; background: var(--ink); border: 1px solid #4a4a46; }
input[type=range]::-moz-range-track { height: 6px; background: var(--ink); border: 1px solid #4a4a46; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 26px; margin-top: -11px; background: var(--accent); border: 2px solid var(--ink); border-radius: 2px; }
input[type=range]::-moz-range-thumb { width: 14px; height: 24px; background: var(--accent); border: 2px solid var(--ink); border-radius: 2px; }
input[type=text], select { width: 100%; min-height: 44px; padding: 8px 10px; border: 2px solid var(--line); border-radius: var(--radius-sm); background: var(--ink); color: var(--text); font-family: var(--mono); }
.swatches { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.swatch { width: 34px; height: 34px; border-radius: 3px; border: 2px solid var(--ink); cursor: pointer; padding: 0; box-shadow: 0 2px 0 #000; }
.swatch[aria-pressed="true"] { outline: 3px solid var(--accent); outline-offset: 2px; }
.color-input { width: 46px; height: 38px; padding: 0; border: 2px solid var(--line); border-radius: var(--radius-sm); background: none; cursor: pointer; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.extras { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
@media (max-width: 420px) { .extras { grid-template-columns: 1fr; } }
.compass-row { display: none; align-items: center; gap: 10px; font: 700 14px/1 var(--mono); }
body.compass-on .compass-row { display: flex; }
.dial { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--muted); position: relative; transition: transform .2s linear; }
.dial::before { content: ""; position: absolute; left: 50%; top: 1px; transform: translateX(-50%); border: 5px solid transparent; border-bottom: 9px solid var(--danger); border-top: 0; }
.tip { font: 500 12px/1.9 var(--mono); color: var(--muted); margin: 2px 0 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 16px;
  border: 2px solid var(--line); border-radius: var(--radius-sm); background: var(--card); color: var(--text);
  font: 700 13px/1 var(--mono); text-transform: uppercase; letter-spacing: .05em; text-decoration: none; cursor: pointer;
}
.btn:hover { background: var(--card-2); color: #fff; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--ink); box-shadow: inset 0 -4px 0 var(--accent-2); }
.btn-primary:hover { background: #ffd21a; color: var(--ink); }

/* ---------- Full-screen controls ---------- */
.hud {
  position: fixed; left: 50%; bottom: max(14px, env(safe-area-inset-bottom)); z-index: 2147483100;
  transform: translate(-50%, 20px); opacity: 0; pointer-events: none; display: none;
  align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; width: min(720px, calc(100% - 20px));
  padding: 10px; border-radius: var(--radius); background: rgba(18,18,17,.92); border: 2px solid var(--line); color: #fff;
  transition: opacity .2s ease, transform .2s ease;
}
body.immersive .hud { display: flex; }
body.immersive .hud.show { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.hud-name { flex: 1 1 140px; text-align: center; font: 700 14px/1.2 var(--mono); text-transform: uppercase; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hud input[type=range] { flex: 1 1 140px; }
.hud-hint { width: 100%; text-align: center; font: 500 11px/1.4 var(--mono); color: var(--muted); }
.icon-btn { width: 44px; height: 44px; flex: none; display: grid; place-items: center; border-radius: var(--radius-sm); background: var(--card); border: 2px solid var(--line); color: #fff; cursor: pointer; }
.icon-btn:hover { background: var(--card-2); }
.icon-btn svg { width: 22px; height: 22px; }
.hud-top { position: fixed; top: max(10px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%); z-index: 2147483100; display: none; align-items: center; gap: 12px; padding: 6px 12px; background: rgba(18,18,17,.9); border: 2px solid var(--line); border-radius: var(--radius); color: #fff; font: 700 13px/1 var(--mono); }
body.immersive.compass-on .hud-top, body.immersive .hud.show ~ .hud-top { display: flex; }
.hud-top [data-ffl-battery]:empty { display: none; }
.lockscreen { position: fixed; inset: 0; z-index: 2147483200; display: none; align-items: flex-end; justify-content: center; padding-bottom: max(24px, env(safe-area-inset-bottom)); }
body.locked .lockscreen { display: flex; }
.unlock-btn { position: relative; overflow: hidden; min-height: 52px; padding: 0 18px; display: inline-flex; align-items: center; gap: 8px; border: 2px solid var(--line); border-radius: var(--radius); background: rgba(18,18,17,.85); color: #fff; font: 700 13px/1 var(--mono); text-transform: uppercase; touch-action: none; user-select: none; -webkit-user-select: none; }
.unlock-btn svg { width: 18px; height: 18px; }
.unlock-btn::before { content: ""; position: absolute; inset: 0; background: rgba(242,194,0,.5); transform: scaleX(0); transform-origin: left; }
.unlock-btn.holding::before { transform: scaleX(1); transition: transform .9s linear; }
.unlock-btn > * { position: relative; }

/* ---------- Content ---------- */
.content { max-width: 880px; margin: 8px auto 40px; padding: 0 16px; position: relative; z-index: 1; }
.content h2, .content-col h2 { font-size: clamp(22px, 3vw, 28px); margin-top: 1.4em; }
.content h3 { font-size: 18px; margin-top: 1.2em; }
.content p, .content li, .content-col p { color: #d8d7d0; }
.content ul, .content ol { padding-left: 1.2em; }
.content li { margin: .3em 0; }
.content-col .glass { padding: 18px 20px; }
.mode-list { list-style: none; padding: 0 !important; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.mode-list li { margin: 0; padding: 12px 14px; background: var(--bg-2); border: 2px solid var(--line); border-radius: var(--radius); }
.mode-list a { font: 700 14px/1.3 var(--mono); text-transform: uppercase; text-decoration: none; }
.mode-list span { display: block; font-size: 15px; color: var(--muted); margin-top: 4px; }
.warn { border-color: var(--danger); background: #2a1c1a; }
.faq details { background: var(--bg-2); border: 2px solid var(--line); border-radius: var(--radius); padding: 2px 16px; margin: 8px 0; }
.faq summary { cursor: pointer; padding: 12px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+"; display: inline-block; width: 1.3em; font: 700 18px/1 var(--mono); color: var(--accent); }
.faq details[open] summary::before { content: "–"; }
.faq summary h3 { display: inline; font-family: var(--font); font-weight: 700; font-size: 17px; margin: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); border-top: 10px solid transparent; border-image: repeating-linear-gradient(-45deg, var(--accent) 0 12px, var(--ink) 12px 24px) 10; padding: 22px 16px 40px; color: var(--muted); font: 500 13px/1.6 var(--mono); }
.site-footer .inner { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }
.site-footer a { color: var(--muted); }
.share { display: flex; gap: 8px; flex-wrap: wrap; }
.share .btn { min-height: 40px; }

/* ---------- Dialog ---------- */
dialog.warn-dialog { max-width: 440px; width: calc(100% - 32px); padding: 22px; border: 2px solid var(--danger); border-radius: var(--radius); background: var(--bg-2); color: var(--text); }
dialog.warn-dialog::backdrop { background: rgba(0,0,0,.75); }
dialog.warn-dialog h2 { font-size: 22px; text-transform: uppercase; }
.dialog-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }