DIY — Difficulty Meter

:root {
  --blueprint: #0f2a4a;
  --blueprint-d: #0a1e36;
  --blueprint-l: #16385f;
  --grid: rgba(140, 180, 220, 0.14);
  --grid-major: rgba(140, 180, 220, 0.26);
  --orange: #ff6b35;
  --orange-d: #e0521f;
  --orange-soft: #ffe3d6;
  --kraft: #d9c7a7;
  --kraft-l: #efe6d4;
  --ink: #1c2733;
  --ink-2: #3d4a57;
  --muted: #6b7885;
  --bg: #f4f1ea;
  --white: #ffffff;
  --line: rgba(28, 39, 51, 0.12);
  --line-2: rgba(28, 39, 51, 0.2);
  --ok: #2f9e6f;
  --warn: #d98a2b;
  --danger: #d4503e;
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;
  --shadow-sm: 0 1px 3px rgba(28, 39, 51, 0.08), 0 4px 14px rgba(28, 39, 51, 0.06);
  --shadow-md: 0 6px 24px rgba(28, 39, 51, 0.12), 0 2px 6px rgba(28, 39, 51, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.mono {
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 72px;
}

/* ============ Header ============ */
.page-head {
  text-align: center;
  margin-bottom: 28px;
}

.head-kicker {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--orange-d);
  background: var(--orange-soft);
  border: 1px solid rgba(224, 82, 31, 0.25);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 14px;
}

.head-title {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.head-sub {
  margin: 0 auto;
  max-width: 480px;
  color: var(--muted);
  font-size: 15px;
}

/* ============ Preset bar ============ */
.preset-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 22px;
}

.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 12px 14px;
  background: var(--white);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.12s ease, background 0.18s ease;
}

.preset-btn:hover {
  border-color: var(--orange);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.preset-btn:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

.preset-btn:active {
  transform: translateY(0);
}

.preset-btn.is-active {
  background: var(--blueprint);
  border-color: var(--blueprint);
  box-shadow: var(--shadow-md);
}

.preset-btn.is-active .preset-name {
  color: var(--white);
}

.preset-btn.is-active .preset-model {
  color: var(--orange);
}

.preset-icon {
  font-size: 18px;
  line-height: 1;
  margin-bottom: 4px;
}

.preset-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--ink);
}

.preset-model {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ============ Meter card ============ */
.meter-card {
  background: var(--blueprint);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px);
  background-size: 8px 8px, 8px 8px, 80px 80px, 80px 80px;
  border-radius: var(--r-lg);
  padding: 26px 28px 20px;
  box-shadow: var(--shadow-md);
  color: var(--kraft-l);
}

.meter-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.meter-card-title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--white);
}

.meter-device {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--kraft);
  transition: opacity 0.25s ease;
}

.verdict-pill {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.verdict-pill[data-tier="easy"] {
  background: rgba(47, 158, 111, 0.18);
  color: #7fe0b4;
  border-color: rgba(47, 158, 111, 0.5);
}

.verdict-pill[data-tier="moderate"] {
  background: rgba(217, 138, 43, 0.16);
  color: #ffcf8f;
  border-color: rgba(217, 138, 43, 0.5);
}

.verdict-pill[data-tier="hard"] {
  background: rgba(212, 80, 62, 0.16);
  color: #ffab9e;
  border-color: rgba(212, 80, 62, 0.55);
}

.meter-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 30px;
  align-items: center;
}

/* --- Dial --- */
.dial-wrap {
  position: relative;
  text-align: center;
}

.dial {
  width: 100%;
  max-width: 240px;
  display: block;
  margin: 0 auto;
  overflow: visible;
}

.dial-track {
  stroke: rgba(140, 180, 220, 0.18);
}

.dial-fill {
  stroke: var(--orange);
  transition: stroke 0.4s ease;
}

.dial-ticks line {
  stroke: rgba(140, 180, 220, 0.45);
  stroke-width: 1.5;
}

.dial-readout {
  position: absolute;
  left: 0;
  right: 0;
  top: 52%;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  pointer-events: none;
}

.dial-score {
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
  color: var(--white);
}

.dial-outof {
  font-size: 14px;
  color: var(--kraft);
}

.dial-verdict {
  margin: 10px 0 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--kraft-l);
  min-height: 1.5em;
  transition: opacity 0.25s ease;
}

/* --- Criteria rows --- */
.criteria {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.crit-row {
  display: grid;
  grid-template-columns: 132px 1fr 44px;
  align-items: center;
  gap: 12px;
}

.crit-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--kraft-l);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.crit-blocks {
  display: flex;
  gap: 5px;
}

.crit-block {
  height: 12px;
  flex: 1;
  border-radius: 3px;
  background: rgba(140, 180, 220, 0.16);
  border: 1px solid rgba(140, 180, 220, 0.2);
  transform-origin: left center;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.crit-block.is-filled {
  background: var(--orange);
  border-color: var(--orange-d);
  animation: block-pop 0.32s ease both;
}

.crit-row[data-tier="ok"] .crit-block.is-filled {
  background: var(--ok);
  border-color: #257f58;
}

.crit-row[data-tier="warn"] .crit-block.is-filled {
  background: var(--warn);
  border-color: #b06f1f;
}

.crit-row[data-tier="danger"] .crit-block.is-filled {
  background: var(--danger);
  border-color: #ac3c2d;
}

@keyframes block-pop {
  0% {
    transform: scaleX(0.3);
    opacity: 0;
  }
  60% {
    transform: scaleX(1.08);
    opacity: 1;
  }
  100% {
    transform: scaleX(1);
    opacity: 1;
  }
}

.crit-score {
  font-size: 12px;
  font-weight: 600;
  text-align: right;
  color: var(--kraft);
}

/* --- Footer --- */
.meter-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px dashed rgba(140, 180, 220, 0.35);
}

.foot-note {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--kraft);
  transition: opacity 0.25s ease;
}

/* ============ Variants ============ */
.variants {
  margin-top: 36px;
}

.variants-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.variants-kicker {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--orange-d);
}

.variant-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.variant-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.variant-card-title {
  margin: 0 0 2px;
  font-size: 15px;
  font-weight: 700;
}

.variant-card-sub {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--muted);
}

/* --- Badges --- */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.diff-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.diff-badge.is-easy {
  background: rgba(47, 158, 111, 0.12);
  color: #1d7a52;
  border-color: rgba(47, 158, 111, 0.35);
}

.diff-badge.is-moderate {
  background: rgba(217, 138, 43, 0.12);
  color: #a3661a;
  border-color: rgba(217, 138, 43, 0.35);
}

.diff-badge.is-hard {
  background: rgba(212, 80, 62, 0.1);
  color: #b03a29;
  border-color: rgba(212, 80, 62, 0.35);
}

.badge-demo {
  border: 1px dashed var(--line-2);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.badge-demo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 13px;
  transition: background 0.15s ease;
}

.badge-demo-row:hover {
  background: var(--kraft-l);
}

.badge-demo-row + .badge-demo-row {
  border-top: 1px solid var(--line);
}

.badge-demo-part {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
  flex-shrink: 0;
}

.badge-demo-name {
  flex: 1;
  font-weight: 500;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Wrenches --- */
.wrench-list {
  display: flex;
  flex-direction: column;
}

.wrench-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 2px;
  transition: background 0.15s ease;
  border-radius: var(--r-sm);
}

.wrench-row:hover {
  background: var(--kraft-l);
}

.wrench-row + .wrench-row {
  border-top: 1px solid var(--line);
}

.wrench-label {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
}

.wrench-set {
  display: inline-flex;
  gap: 3px;
}

.wrench-set svg {
  width: 16px;
  height: 16px;
  display: block;
}

.wrench-set svg.is-on {
  color: var(--orange);
}

.wrench-set svg.is-off {
  color: rgba(28, 39, 51, 0.18);
}

.wrench-score {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  width: 30px;
  text-align: right;
}

/* ============ Toast ============ */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 16px);
  background: var(--ink);
  color: var(--kraft-l);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 10px 18px;
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 50;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  .crit-block.is-filled {
    animation: none;
  }
  .preset-btn,
  .toast {
    transition: none;
  }
}

/* ============ Responsive ============ */
@media (max-width: 720px) {
  .meter-body {
    grid-template-columns: 1fr;
    gap: 22px;
  }

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

@media (max-width: 520px) {
  .page {
    padding: 28px 14px 56px;
  }

  .preset-bar {
    grid-template-columns: 1fr;
  }

  .preset-btn {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .preset-icon {
    margin-bottom: 0;
  }

  .preset-model {
    margin-left: auto;
  }

  .meter-card {
    padding: 20px 18px 16px;
  }

  .meter-card-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .crit-row {
    grid-template-columns: 104px 1fr 40px;
    gap: 8px;
  }

  .crit-label {
    font-size: 12px;
  }

  .badge-demo-part {
    display: none;
  }
}

/* DIY — Difficulty Meter
   Presets swap the data set; the dial arc + criterion blocks animate on every change. */

(function () {
  "use strict";

  // ---------- Data ----------
  var PRESETS = {
    phone: {
      device: "PX-7 FAIRBIT · 2025 REV B",
      score: 9,
      verdict: "Repairable — grab a spudger",
      time: "EST. REPAIR TIME: 25 MIN",
      tools: "TOOLS: PH00 + SPUDGER",
      criteria: [
        { label: "Opening ease", score: 5 },
        { label: "Fasteners", score: 5 },
        { label: "Modularity", score: 4 },
        { label: "Part availability", score: 5 },
        { label: "Docs & guides", score: 4 }
      ]
    },
    laptop: {
      device: "NB-14 CRAFTBOOK · 2024",
      score: 6,
      verdict: "Repairable with patience",
      time: "EST. REPAIR TIME: 1 H 40 MIN",
      tools: "TOOLS: T5 TORX + PRY PICKS",
      criteria: [
        { label: "Opening ease", score: 4 },
        { label: "Fasteners", score: 3 },
        { label: "Modularity", score: 3 },
        { label: "Part availability", score: 3 },
        { label: "Docs & guides", score: 2 }
      ]
    },
    tablet: {
      device: "TB-11 SEALDECK · 2025",
      score: 2,
      verdict: "Glued shut — heat gun territory",
      time: "EST. REPAIR TIME: 3 H+ (RISKY)",
      tools: "TOOLS: HEAT GUN + SUCTION CUPS",
      criteria: [
        { label: "Opening ease", score: 1 },
        { label: "Fasteners", score: 1 },
        { label: "Modularity", score: 2 },
        { label: "Part availability", score: 2 },
        { label: "Docs & guides", score: 1 }
      ]
    }
  };

  var VERDICT_PILL = {
    easy: "Repairable",
    moderate: "Fixable",
    hard: "Hostile"
  };

  // ---------- Elements ----------
  var dialFill = document.getElementById("dial-fill");
  var dialTicks = document.getElementById("dial-ticks");
  var dialScore = document.getElementById("dial-score");
  var dialVerdict = document.getElementById("dial-verdict");
  var verdictPill = document.getElementById("verdict-pill");
  var meterDevice = document.getElementById("meter-device");
  var criteriaList = document.getElementById("criteria-list");
  var footNote = document.getElementById("foot-note");
  var footTools = document.getElementById("foot-tools");
  var toastEl = document.getElementById("toast");
  var presetBtns = Array.prototype.slice.call(
    document.querySelectorAll(".preset-btn")
  );

  var ARC_LEN = dialFill.getTotalLength(); // semicircle path length
  var reduceMotion = window.matchMedia("(prefers-reduced-motion: reduce)").matches;

  dialFill.style.strokeDasharray = ARC_LEN + " " + ARC_LEN;
  dialFill.style.strokeDashoffset = ARC_LEN;

  // ---------- Helpers ----------
  var toastTimer = null;
  function toast(msg) {
    toastEl.textContent = msg;
    toastEl.classList.add("is-visible");
    clearTimeout(toastTimer);
    toastTimer = setTimeout(function () {
      toastEl.classList.remove("is-visible");
    }, 2200);
  }

  function tierFor10(score) {
    if (score >= 7) return "easy";
    if (score >= 4) return "moderate";
    return "hard";
  }

  function tierFor5(score) {
    if (score >= 4) return "ok";
    if (score >= 3) return "warn";
    return "danger";
  }

  function colorForTier(tier) {
    var styles = getComputedStyle(document.documentElement);
    if (tier === "easy") return styles.getPropertyValue("--ok").trim();
    if (tier === "moderate") return styles.getPropertyValue("--warn").trim();
    return styles.getPropertyValue("--danger").trim();
  }

  function easeOutCubic(t) {
    return 1 - Math.pow(1 - t, 3);
  }

  // ---------- Dial ticks (11 marks, 0..10) ----------
  (function buildTicks() {
    var cx = 100, cy = 110, rOuter = 96, rInner = 90;
    for (var i = 0; i <= 10; i++) {
      var angle = Math.PI - (Math.PI * i) / 10; // 180° → 0°
      var line = document.createElementNS("http://www.w3.org/2000/svg", "line");
      line.setAttribute("x1", (cx + rInner * Math.cos(angle)).toFixed(2));
      line.setAttribute("y1", (cy - rInner * Math.sin(angle)).toFixed(2));
      line.setAttribute("x2", (cx + rOuter * Math.cos(angle)).toFixed(2));
      line.setAttribute("y2", (cy - rOuter * Math.sin(angle)).toFixed(2));
      dialTicks.appendChild(line);
    }
  })();

  // ---------- Dial animation ----------
  var dialAnim = null;
  function animateDial(targetScore) {
    if (dialAnim) cancelAnimationFrame(dialAnim);

    var fromOffset = parseFloat(dialFill.style.strokeDashoffset) || ARC_LEN;
    var fromScore = parseInt(dialScore.textContent, 10) || 0;
    var toOffset = ARC_LEN * (1 - targetScore / 10);
    var duration = reduceMotion ? 0 : 900;
    var start = null;

    function frame(ts) {
      if (start === null) start = ts;
      var t = duration === 0 ? 1 : Math.min((ts - start) / duration, 1);
      var e = easeOutCubic(t);

      dialFill.style.strokeDashoffset =
        fromOffset + (toOffset - fromOffset) * e;
      dialScore.textContent = Math.round(
        fromScore + (targetScore - fromScore) * e
      );

      if (t < 1) {
        dialAnim = requestAnimationFrame(frame);
      } else {
        dialAnim = null;
      }
    }
    dialAnim = requestAnimationFrame(frame);
  }

  // ---------- Criteria rows ----------
  function renderCriteria(criteria) {
    criteriaList.innerHTML = "";
    criteria.forEach(function (crit, rowIdx) {
      var row = document.createElement("div");
      row.className = "crit-row";
      row.setAttribute("data-tier", tierFor5(crit.score));

      var label = document.createElement("span");
      label.className = "crit-label";
      label.textContent = crit.label;

      var blocks = document.createElement("div");
      blocks.className = "crit-blocks";
      blocks.setAttribute("role", "img");
      blocks.setAttribute(
        "aria-label",
        crit.label + ": " + crit.score + " out of 5"
      );

      for (var i = 0; i < 5; i++) {
        var block = document.createElement("span");
        block.className = "crit-block";
        if (i < crit.score) {
          if (reduceMotion) {
            block.classList.add("is-filled");
          } else {
            // stagger: rows cascade, blocks within a row cascade faster
            (function (b, delay) {
              setTimeout(function () {
                b.classList.add("is-filled");
              }, delay);
            })(block, 120 + rowIdx * 90 + i * 55);
          }
        }
        blocks.appendChild(block);
      }

      var score = document.createElement("span");
      score.className = "crit-score mono";
      score.textContent = crit.score + "/5";

      row.appendChild(label);
      row.appendChild(blocks);
      row.appendChild(score);
      criteriaList.appendChild(row);
    });
  }

  // ---------- Preset switching ----------
  function applyPreset(key, opts) {
    var data = PRESETS[key];
    if (!data) return;

    var tier = tierFor10(data.score);

    // text swaps with a light fade
    [meterDevice, dialVerdict, footNote, footTools].forEach(function (el) {
      el.style.opacity = "0";
    });
    setTimeout(function () {
      meterDevice.textContent = data.device;
      dialVerdict.textContent = data.score + " — " + data.verdict;
      footNote.textContent = data.time;
      footTools.textContent = data.tools;
      [meterDevice, dialVerdict, footNote, footTools].forEach(function (el) {
        el.style.opacity = "1";
      });
    }, reduceMotion ? 0 : 180);

    verdictPill.setAttribute("data-tier", tier);
    verdictPill.textContent = VERDICT_PILL[tier];
    dialFill.style.stroke = colorForTier(tier);

    animateDial(data.score);
    renderCriteria(data.criteria);

    presetBtns.forEach(function (btn) {
      var active = btn.getAttribute("data-preset") === key;
      btn.classList.toggle("is-active", active);
      btn.setAttribute("aria-selected", active ? "true" : "false");
    });

    if (!opts || !opts.silent) {
      toast("LOADED PROFILE: " + data.device.split(" · ")[0]);
    }
  }

  presetBtns.forEach(function (btn) {
    btn.addEventListener("click", function () {
      if (btn.classList.contains("is-active")) return;
      applyPreset(btn.getAttribute("data-preset"));
    });
  });

  // ---------- Wrench ratings ----------
  var WRENCH_PATH =
    "M21.7 6.9a.5.5 0 0 0-.8-.2l-2.9 2.9-2.6-.5-.5-2.6 2.9-2.9a.5.5 0 0 0-.2-.8 5.9 5.9 0 0 0-6.4 1.3 5.9 5.9 0 0 0-1.4 6.2L2.5 17.6a2.4 2.4 0 0 0 0 3.4l.5.5a2.4 2.4 0 0 0 3.4 0l7.3-7.3a5.9 5.9 0 0 0 6.2-1.4 5.9 5.9 0 0 0 1.8-5.9z";

  function wrenchSvg(on) {
    var svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
    svg.setAttribute("viewBox", "0 0 24 24");
    svg.setAttribute("aria-hidden", "true");
    svg.setAttribute("class", on ? "is-on" : "is-off");
    var path = document.createElementNS("http://www.w3.org/2000/svg", "path");
    path.setAttribute("d", WRENCH_PATH);
    path.setAttribute("fill", "currentColor");
    svg.appendChild(path);
    return svg;
  }

  Array.prototype.forEach.call(
    document.querySelectorAll(".wrench-set"),
    function (set) {
      var rating = parseInt(set.getAttribute("data-rating"), 10) || 0;
      for (var i = 1; i <= 5; i++) {
        set.appendChild(wrenchSvg(i <= rating));
      }
    }
  );

  // ---------- Boot ----------
  applyPreset("phone", { silent: true });
})();

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>DIY — Difficulty Meter</title>
  <link rel="preconnect" href="https://fonts.googleapis.com" />
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;600;700&display=swap" rel="stylesheet" />
  <link rel="stylesheet" href="style.css" />
</head>
<body>

  <main class="page">

    <!-- ============ Header ============ -->
    <header class="page-head">
      <span class="head-kicker mono">FIELD MANUAL · FIG. 04</span>
      <h1 class="head-title">Repair Difficulty Meter</h1>
      <p class="head-sub">
        Teardown scores rated by the <strong>WrenchWorks Guild</strong> — pick a device
        profile below to see how hard the fix really is.
      </p>
    </header>

    <!-- ============ Preset switcher ============ -->
    <div class="preset-bar" role="tablist" aria-label="Device presets">
      <button class="preset-btn is-active" role="tab" aria-selected="true" data-preset="phone">
        <span class="preset-icon" aria-hidden="true">📱</span>
        <span class="preset-name">Easy phone</span>
        <span class="preset-model mono">PX-7 FAIRBIT</span>
      </button>
      <button class="preset-btn" role="tab" aria-selected="false" data-preset="laptop">
        <span class="preset-icon" aria-hidden="true">💻</span>
        <span class="preset-name">Average laptop</span>
        <span class="preset-model mono">NB-14 CRAFTBOOK</span>
      </button>
      <button class="preset-btn" role="tab" aria-selected="false" data-preset="tablet">
        <span class="preset-icon" aria-hidden="true">📟</span>
        <span class="preset-name">Glued tablet</span>
        <span class="preset-model mono">TB-11 SEALDECK</span>
      </button>
    </div>

    <!-- ============ Main meter card ============ -->
    <section class="meter-card" aria-labelledby="meter-title">
      <div class="meter-card-head">
        <div>
          <h2 class="meter-card-title" id="meter-title">Repairability score</h2>
          <p class="meter-device mono" id="meter-device">PX-7 FAIRBIT · 2025 REV B</p>
        </div>
        <span class="verdict-pill" id="verdict-pill" data-tier="easy">Repairable</span>
      </div>

      <div class="meter-body">
        <!-- Dial -->
        <div class="dial-wrap">
          <svg class="dial" viewBox="0 0 200 120" role="img" aria-labelledby="dial-label">
            <title id="dial-label">Repairability score dial</title>
            <path class="dial-track" d="M 20 110 A 80 80 0 0 1 180 110"
                  fill="none" stroke-linecap="round" stroke-width="14" />
            <path class="dial-fill" id="dial-fill" d="M 20 110 A 80 80 0 0 1 180 110"
                  fill="none" stroke-linecap="round" stroke-width="14" />
            <g class="dial-ticks" id="dial-ticks" aria-hidden="true"></g>
          </svg>
          <div class="dial-readout">
            <span class="dial-score mono" id="dial-score" aria-live="polite">0</span>
            <span class="dial-outof mono">/ 10</span>
          </div>
          <p class="dial-verdict" id="dial-verdict">Loading…</p>
        </div>

        <!-- Criteria breakdown -->
        <div class="criteria" id="criteria-list" aria-label="Criterion breakdown">
          <!-- rows injected by script.js -->
        </div>
      </div>

      <footer class="meter-foot">
        <span class="foot-note mono" id="foot-note">EST. REPAIR TIME: 25 MIN</span>
        <span class="foot-note mono" id="foot-tools">TOOLS: PH00 + SPUDGER</span>
      </footer>
    </section>

    <!-- ============ Inline variants ============ -->
    <section class="variants" aria-labelledby="variants-title">
      <h2 class="variants-title" id="variants-title">
        <span class="mono variants-kicker">APPENDIX A</span>
        Inline variants
      </h2>

      <div class="variant-grid">
        <!-- Pill badges -->
        <article class="variant-card">
          <h3 class="variant-card-title">Difficulty badges</h3>
          <p class="variant-card-sub">Drop into part listings or guide headers.</p>
          <div class="badge-row">
            <span class="diff-badge is-easy"><span class="badge-dot" aria-hidden="true"></span>Easy</span>
            <span class="diff-badge is-moderate"><span class="badge-dot" aria-hidden="true"></span>Moderate</span>
            <span class="diff-badge is-hard"><span class="badge-dot" aria-hidden="true"></span>Hard</span>
          </div>
          <div class="badge-demo">
            <div class="badge-demo-row">
              <span class="badge-demo-part mono">BAT-PX7-01</span>
              <span class="badge-demo-name">Battery swap</span>
              <span class="diff-badge is-easy"><span class="badge-dot" aria-hidden="true"></span>Easy</span>
            </div>
            <div class="badge-demo-row">
              <span class="badge-demo-part mono">SCR-NB14-03</span>
              <span class="badge-demo-name">Screen replacement</span>
              <span class="diff-badge is-moderate"><span class="badge-dot" aria-hidden="true"></span>Moderate</span>
            </div>
            <div class="badge-demo-row">
              <span class="badge-demo-part mono">LGB-TB11-07</span>
              <span class="badge-demo-name">Logic board reflow</span>
              <span class="diff-badge is-hard"><span class="badge-dot" aria-hidden="true"></span>Hard</span>
            </div>
          </div>
        </article>

        <!-- Wrench rating -->
        <article class="variant-card">
          <h3 class="variant-card-title">Wrench rating</h3>
          <p class="variant-card-sub">Five-wrench scale for compact cards.</p>
          <div class="wrench-list">
            <div class="wrench-row">
              <span class="wrench-label">Keycap swap</span>
              <span class="wrench-set" role="img" aria-label="Difficulty 1 of 5 wrenches" data-rating="1"></span>
              <span class="wrench-score mono">1/5</span>
            </div>
            <div class="wrench-row">
              <span class="wrench-label">Fan cleaning</span>
              <span class="wrench-set" role="img" aria-label="Difficulty 2 of 5 wrenches" data-rating="2"></span>
              <span class="wrench-score mono">2/5</span>
            </div>
            <div class="wrench-row">
              <span class="wrench-label">Hinge rebuild</span>
              <span class="wrench-set" role="img" aria-label="Difficulty 4 of 5 wrenches" data-rating="4"></span>
              <span class="wrench-score mono">4/5</span>
            </div>
            <div class="wrench-row">
              <span class="wrench-label">Microsoldering</span>
              <span class="wrench-set" role="img" aria-label="Difficulty 5 of 5 wrenches" data-rating="5"></span>
              <span class="wrench-score mono">5/5</span>
            </div>
          </div>
        </article>
      </div>
    </section>

  </main>

  <div class="toast mono" id="toast" role="status" aria-live="polite"></div>

  <script src="script.js"></script>
</body>
</html>