Coach — Habit Tracker

:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1f232c;
  --lime: #c2f542;
  --lime-d: #a3d62f;
  --orange: #ff6b35;
  --ink: #f2f4f0;
  --muted: #9aa0a6;
  --line: rgba(255, 255, 255, 0.10);
  --line-2: rgba(255, 255, 255, 0.18);
  --white: #fff;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(900px 500px at 100% -10%, rgba(194, 245, 66, 0.10), transparent 60%),
    radial-gradient(700px 480px at -10% 110%, rgba(255, 107, 53, 0.10), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--lime), var(--lime-d));
  color: #10130a;
  font-size: 22px;
  box-shadow: 0 8px 24px rgba(194, 245, 66, 0.28);
}

.brand-kicker {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime-d);
}

.brand-text h1 {
  margin: 2px 0 0;
  font-size: clamp(22px, 4.5vw, 30px);
  font-weight: 800;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

/* Buttons */
.btn {
  font: inherit;
  font-weight: 700;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  padding: 11px 18px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.btn:active { transform: translateY(1px) scale(0.99); }

.btn:focus-visible {
  outline: 3px solid rgba(194, 245, 66, 0.55);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(160deg, var(--lime), var(--lime-d));
  color: #10130a;
  box-shadow: 0 8px 22px rgba(194, 245, 66, 0.30);
}

.btn-primary:hover {
  box-shadow: 0 10px 30px rgba(194, 245, 66, 0.45);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--surface-2);
  color: var(--ink);
  border-color: var(--line);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 12px;
}

.btn-ghost:hover { border-color: var(--line-2); background: #262b35; }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr) 1.4fr;
  gap: 14px;
  margin-bottom: 22px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-value {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.stat-value--lime { color: var(--lime); }
.stat-value--orange { color: var(--orange); }
.stat-unit { font-size: 15px; font-weight: 700; opacity: 0.7; margin-left: 2px; }
.stat-sub { font-size: 12px; color: var(--muted); }

.stat-card--wide { justify-content: center; }
.stat-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.stat-head .stat-value { font-size: 26px; }

.progress {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  border: 1px solid var(--line);
}

.progress-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--lime-d), var(--lime));
  box-shadow: 0 0 16px rgba(194, 245, 66, 0.5);
  transition: width 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Board */
.board {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 8px 10px 12px;
  overflow-x: auto;
}

.grid-head,
.habit-row {
  display: grid;
  grid-template-columns: minmax(150px, 1.6fr) repeat(7, minmax(38px, 1fr));
  align-items: center;
  gap: 6px;
}

.grid-head {
  padding: 12px 8px 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

.head-habit { color: var(--muted); }

.cell-habit {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.day-head {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.day-head.is-today {
  color: var(--lime);
}

.habit-row {
  padding: 12px 8px;
  border-radius: var(--r-md);
  transition: background 0.15s ease;
}

.habit-row:hover { background: rgba(255, 255, 255, 0.03); }

.habit-info {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.habit-emoji {
  flex: none;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  background: var(--surface-2);
  border: 1px solid var(--line);
  font-size: 18px;
}

.habit-meta { min-width: 0; }

.habit-name {
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.habit-streak {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 3px;
  font-size: 11px;
  font-weight: 700;
  color: var(--orange);
}

.habit-streak.is-zero { color: var(--muted); }

.streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.14);
  border: 1px solid rgba(255, 107, 53, 0.3);
}
.habit-streak.is-zero .streak-badge {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
}

.remove-habit {
  margin-left: 4px;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  padding: 4px;
  border-radius: 6px;
  opacity: 0;
  transition: opacity 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.habit-row:hover .remove-habit,
.remove-habit:focus-visible { opacity: 1; }
.remove-habit:hover { color: var(--orange); background: rgba(255, 107, 53, 0.12); }

/* Cells */
.cell {
  position: relative;
  margin: 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  cursor: pointer;
  display: grid;
  place-items: center;
  color: transparent;
  font-size: 16px;
  font-weight: 800;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.cell:hover { border-color: var(--line-2); transform: translateY(-1px); }

.cell:focus-visible {
  outline: 3px solid rgba(194, 245, 66, 0.55);
  outline-offset: 2px;
}

.cell.is-done {
  background: linear-gradient(160deg, var(--lime), var(--lime-d));
  border-color: transparent;
  color: #10130a;
  box-shadow: 0 6px 16px rgba(194, 245, 66, 0.35);
}

.cell.is-today:not(.is-done) {
  border-color: rgba(194, 245, 66, 0.45);
}

.cell.pop { animation: pop 0.34s cubic-bezier(0.2, 0.9, 0.3, 1.3); }

@keyframes pop {
  0% { transform: scale(0.7); }
  55% { transform: scale(1.18); }
  100% { transform: scale(1); }
}

/* Composer */
.composer { margin-top: 22px; }

.add-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 14px 16px;
}

.emoji-pick { display: flex; gap: 6px; }

.emoji-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--surface-2);
  font-size: 19px;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.emoji-btn:hover { transform: translateY(-1px); border-color: var(--line-2); }
.emoji-btn:focus-visible {
  outline: 3px solid rgba(194, 245, 66, 0.55);
  outline-offset: 2px;
}

.emoji-btn.is-active {
  border-color: var(--lime);
  box-shadow: 0 0 0 1px var(--lime), 0 6px 16px rgba(194, 245, 66, 0.25);
}

.add-input {
  flex: 1 1 200px;
  min-width: 0;
  font: inherit;
  font-weight: 500;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 11px 14px;
}

.add-input::placeholder { color: var(--muted); }
.add-input:focus {
  outline: none;
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(194, 245, 66, 0.18);
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 20px);
  background: var(--surface-2);
  color: var(--ink);
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--lime);
  padding: 12px 18px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.28s ease;
  z-index: 50;
}

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

/* Responsive */
@media (max-width: 720px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .stat-card--wide { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .wrap { padding: 22px 14px 56px; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .btn-ghost { align-self: stretch; }
  .stats { grid-template-columns: 1fr; }
  .grid-head,
  .habit-row {
    grid-template-columns: minmax(120px, 1.4fr) repeat(7, minmax(30px, 1fr));
  }
  .habit-emoji { width: 32px; height: 32px; font-size: 15px; }
  .cell { width: 28px; height: 28px; border-radius: 8px; font-size: 13px; }
  .day-head { font-size: 10px; }
  .add-form { flex-direction: column; align-items: stretch; }
  .emoji-pick { justify-content: space-between; }
  .btn-primary { width: 100%; }
}

(function () {
  "use strict";

  var DAYS = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"];
  // JS getDay(): 0=Sun..6=Sat -> map to our Mon-first index
  var jsDay = new Date().getDay();
  var TODAY = (jsDay + 6) % 7;

  // Seeded starter data — realistic but fictional. done = boolean[7]
  var habits = [
    { id: id(), emoji: "🏋️", name: "Strength training", done: [true, true, false, true, true, false, false] },
    { id: id(), emoji: "💧", name: "Drink 3L water", done: [true, true, true, true, false, false, false] },
    { id: id(), emoji: "🥗", name: "Hit protein target", done: [true, true, true, true, true, false, false] },
    { id: id(), emoji: "🏃", name: "10k steps", done: [false, true, true, false, true, false, false] },
    { id: id(), emoji: "😴", name: "Sleep by 11pm", done: [true, false, true, true, false, false, false] }
  ];

  var gridHead = document.getElementById("gridHead");
  var gridBody = document.getElementById("gridBody");
  var toastEl = document.getElementById("toast");
  var toastTimer;

  function id() {
    return "h" + Math.random().toString(36).slice(2, 9);
  }

  function toast(msg) {
    toastEl.textContent = msg;
    toastEl.classList.add("show");
    clearTimeout(toastTimer);
    toastTimer = setTimeout(function () {
      toastEl.classList.remove("show");
    }, 2200);
  }

  // Current streak = consecutive done days ending at today, walking backwards.
  function streakFor(habit) {
    var s = 0;
    for (var i = TODAY; i >= 0; i--) {
      if (habit.done[i]) s++;
      else break;
    }
    return s;
  }

  function buildHead() {
    gridHead.innerHTML = "";
    var label = document.createElement("span");
    label.className = "cell-habit head-habit";
    label.textContent = "Habit";
    gridHead.appendChild(label);
    DAYS.forEach(function (d, i) {
      var h = document.createElement("span");
      h.className = "day-head" + (i === TODAY ? " is-today" : "");
      h.textContent = d;
      gridHead.appendChild(h);
    });
  }

  function renderRows() {
    gridBody.innerHTML = "";
    habits.forEach(function (habit) {
      var row = document.createElement("div");
      row.className = "habit-row";

      var info = document.createElement("div");
      info.className = "habit-info cell-habit";
      info.style.textTransform = "none";
      info.style.letterSpacing = "0";

      var emoji = document.createElement("span");
      emoji.className = "habit-emoji";
      emoji.textContent = habit.emoji;

      var meta = document.createElement("div");
      meta.className = "habit-meta";
      var name = document.createElement("div");
      name.className = "habit-name";
      name.textContent = habit.name;
      var streak = document.createElement("div");
      var s = streakFor(habit);
      streak.className = "habit-streak" + (s === 0 ? " is-zero" : "");
      streak.innerHTML = '<span class="streak-badge">🔥 ' + s + "</span> day streak";
      meta.appendChild(name);
      meta.appendChild(streak);

      var remove = document.createElement("button");
      remove.className = "remove-habit";
      remove.type = "button";
      remove.setAttribute("aria-label", "Remove " + habit.name);
      remove.textContent = "✕";
      remove.addEventListener("click", function () {
        habits = habits.filter(function (h) { return h.id !== habit.id; });
        render();
        toast("Removed “" + habit.name + "”");
      });

      info.appendChild(emoji);
      info.appendChild(meta);
      info.appendChild(remove);
      row.appendChild(info);

      DAYS.forEach(function (d, i) {
        var cell = document.createElement("button");
        cell.type = "button";
        cell.className = "cell" +
          (habit.done[i] ? " is-done" : "") +
          (i === TODAY ? " is-today" : "");
        cell.textContent = "✓";
        cell.setAttribute(
          "aria-pressed",
          habit.done[i] ? "true" : "false"
        );
        cell.setAttribute("aria-label", habit.name + " — " + d + (habit.done[i] ? " (done)" : ""));
        cell.addEventListener("click", function () {
          habit.done[i] = !habit.done[i];
          if (habit.done[i]) cell.classList.add("pop");
          render();
        });
        row.appendChild(cell);
      });

      gridBody.appendChild(row);
    });
  }

  function renderStats() {
    var total = habits.length * 7;
    var checks = 0;
    var longest = 0;
    habits.forEach(function (h) {
      h.done.forEach(function (v) { if (v) checks++; });
      var s = streakFor(h);
      if (s > longest) longest = s;
    });
    var pct = total ? Math.round((checks / total) * 100) : 0;

    document.getElementById("statChecks").textContent = checks;
    document.getElementById("statChecksSub").textContent =
      habits.length + (habits.length === 1 ? " habit" : " habits") + " tracked";
    document.getElementById("statStreak").innerHTML = longest + '<span class="stat-unit">d</span>';
    document.getElementById("statPct").textContent = pct + "%";

    var bar = document.getElementById("weekProgress");
    document.getElementById("weekProgressFill").style.width = pct + "%";
    bar.setAttribute("aria-valuenow", String(pct));
  }

  function render() {
    renderRows();
    renderStats();
  }

  // Emoji picker
  var selectedEmoji = "🏋️";
  var emojiBtns = document.querySelectorAll(".emoji-btn");
  emojiBtns.forEach(function (btn) {
    btn.addEventListener("click", function () {
      emojiBtns.forEach(function (b) { b.classList.remove("is-active"); });
      btn.classList.add("is-active");
      selectedEmoji = btn.getAttribute("data-emoji");
    });
  });

  // Add habit
  var form = document.getElementById("addForm");
  var input = document.getElementById("habitName");
  form.addEventListener("submit", function (e) {
    e.preventDefault();
    var name = input.value.trim();
    if (!name) {
      toast("Give your habit a name first");
      input.focus();
      return;
    }
    habits.push({
      id: id(),
      emoji: selectedEmoji,
      name: name,
      done: [false, false, false, false, false, false, false]
    });
    input.value = "";
    render();
    toast(selectedEmoji + "  Added “" + name + "” — let's go!");
    // scroll new row into view on small screens
    var rows = gridBody.querySelectorAll(".habit-row");
    if (rows.length) rows[rows.length - 1].scrollIntoView({ behavior: "smooth", block: "nearest" });
  });

  // Reset week
  var resetArmed = false;
  var resetTimer;
  var resetBtn = document.getElementById("resetWeek");
  resetBtn.addEventListener("click", function () {
    if (!resetArmed) {
      resetArmed = true;
      resetBtn.textContent = "Tap again to confirm";
      toast("This clears every check for the week");
      clearTimeout(resetTimer);
      resetTimer = setTimeout(function () {
        resetArmed = false;
        resetBtn.textContent = "Reset week";
      }, 3000);
      return;
    }
    resetArmed = false;
    clearTimeout(resetTimer);
    resetBtn.textContent = "Reset week";
    habits.forEach(function (h) {
      h.done = [false, false, false, false, false, false, false];
    });
    render();
    toast("Week reset — fresh start 💪");
  });

  buildHead();
  render();
})();

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Coach — Habit Tracker</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&display=swap" rel="stylesheet" />
  <link rel="stylesheet" href="style.css" />
</head>
<body>
  <div class="wrap">
    <header class="topbar">
      <div class="brand">
        <span class="brand-mark" aria-hidden="true">⚡</span>
        <div class="brand-text">
          <span class="brand-kicker">Ironpath Coaching</span>
          <h1>Weekly Habit Tracker</h1>
        </div>
      </div>
      <button class="btn btn-ghost" id="resetWeek" type="button">Reset week</button>
    </header>

    <section class="stats" aria-label="Weekly summary">
      <article class="stat-card">
        <span class="stat-label">Checks logged</span>
        <span class="stat-value" id="statChecks">0</span>
        <span class="stat-sub" id="statChecksSub">this week</span>
      </article>
      <article class="stat-card">
        <span class="stat-label">Longest streak</span>
        <span class="stat-value stat-value--orange" id="statStreak">0<span class="stat-unit">d</span></span>
        <span class="stat-sub">consecutive days</span>
      </article>
      <article class="stat-card stat-card--wide">
        <div class="stat-head">
          <span class="stat-label">Weekly completion</span>
          <span class="stat-value stat-value--lime" id="statPct">0%</span>
        </div>
        <div class="progress" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0" id="weekProgress" aria-label="Weekly completion">
          <span class="progress-fill" id="weekProgressFill"></span>
        </div>
      </article>
    </section>

    <section class="board" aria-label="Habit grid">
      <div class="grid-head" id="gridHead">
        <span class="cell-habit head-habit">Habit</span>
        <!-- day headers injected -->
      </div>
      <div class="grid-body" id="gridBody">
        <!-- rows injected -->
      </div>
    </section>

    <section class="composer" aria-label="Add a habit">
      <form id="addForm" class="add-form" autocomplete="off">
        <div class="emoji-pick" role="group" aria-label="Choose an icon">
          <button class="emoji-btn is-active" type="button" data-emoji="🏋️">🏋️</button>
          <button class="emoji-btn" type="button" data-emoji="🥗">🥗</button>
          <button class="emoji-btn" type="button" data-emoji="💧">💧</button>
          <button class="emoji-btn" type="button" data-emoji="🏃">🏃</button>
          <button class="emoji-btn" type="button" data-emoji="🧘">🧘</button>
          <button class="emoji-btn" type="button" data-emoji="😴">😴</button>
        </div>
        <input class="add-input" id="habitName" type="text" maxlength="28" placeholder="New habit — e.g. Cold shower" aria-label="Habit name" />
        <button class="btn btn-primary" type="submit">Add habit</button>
      </form>
    </section>
  </div>

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

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