Upsell — Trial countdown banner

:root {
  --brand: #5b5bf0;
  --brand-d: #4646d6;
  --brand-700: #3a3ab8;
  --brand-50: #eef0ff;
  --accent: #00b4a6;
  --accent-soft: #d8f5f2;
  --ink: #101322;
  --ink-2: #3a4060;
  --muted: #6c7393;
  --bg: #f6f7fb;
  --white: #ffffff;
  --surface: #ffffff;
  --line: rgba(16, 19, 34, 0.1);
  --line-2: rgba(16, 19, 34, 0.16);
  --ok: #2f9e6f;
  --warn: #d98a2b;
  --danger: #d4503e;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --sh-1: 0 1px 2px rgba(16, 19, 34, 0.08);
  --sh-2: 0 8px 24px rgba(16, 19, 34, 0.08);
}

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

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

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

button {
  font: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* ---------- Banner ---------- */
.banner {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(180deg, var(--brand-50), var(--white));
  border-bottom: 1px solid var(--line);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.banner.is-dismissed {
  height: 0 !important;
  padding: 0 !important;
  border-width: 0;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
}

.banner.is-expired {
  background: linear-gradient(180deg, #fdeceb, var(--white));
  border-bottom-color: rgba(212, 80, 62, 0.32);
}

.banner__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
}

.banner__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--brand-d);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--sh-1);
  flex: none;
}

.banner.is-expired .banner__icon {
  color: var(--danger);
  border-color: rgba(212, 80, 62, 0.3);
}

.banner__body {
  min-width: 0;
}

.banner__head {
  margin: 0;
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--ink);
}

.banner__head strong {
  font-weight: 800;
}

.banner__count {
  display: inline-flex;
  align-items: baseline;
  gap: 0.25ch;
  margin-left: 2px;
  padding: 1px 9px;
  border-radius: 999px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--brand-700);
  background: var(--white);
  border: 1px solid var(--line);
}

.banner.is-expired .banner__count {
  color: var(--danger);
  border-color: rgba(212, 80, 62, 0.28);
}

.banner__sub {
  margin: 3px 0 0;
  font-size: 0.84rem;
  color: var(--muted);
}

/* progress */
.progress {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 460px;
}

.progress__track {
  position: relative;
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(91, 91, 240, 0.16);
  overflow: hidden;
}

.banner.is-expired .progress__track {
  background: rgba(212, 80, 62, 0.16);
}

.progress__fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
}

.banner.is-expired .progress__fill {
  width: 100% !important;
  background: linear-gradient(90deg, var(--danger), #e0735f);
}

.progress__label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.banner__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  padding: 9px 15px;
  font-size: 0.86rem;
  font-weight: 700;
  transition: transform 0.12s ease, box-shadow 0.18s ease, background 0.18s ease,
    border-color 0.18s ease, color 0.18s ease;
}

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

.btn--cta {
  color: var(--white);
  background: var(--brand);
  box-shadow: var(--sh-1);
}

.btn--cta:hover {
  background: var(--brand-d);
  box-shadow: var(--sh-2);
}

.banner.is-expired .btn--cta {
  background: var(--danger);
}

.banner.is-expired .btn--cta:hover {
  background: #b8412f;
}

.banner__dismiss {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-2);
  transition: background 0.16s ease, color 0.16s ease;
}

.banner__dismiss:hover {
  background: rgba(16, 19, 34, 0.06);
  color: var(--ink);
}

/* ---------- App chrome ---------- */
.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

.app__bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.app__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--ink);
}

.app__brand svg {
  color: var(--brand);
}

.app__nav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
}

.app__link {
  padding: 7px 12px;
  border-radius: var(--r-sm);
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--muted);
  transition: background 0.16s ease, color 0.16s ease;
}

.app__link:hover {
  background: rgba(16, 19, 34, 0.05);
  color: var(--ink);
}

.app__link.is-active {
  color: var(--brand-700);
  background: var(--brand-50);
}

.app__avatar {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--white);
  background: linear-gradient(135deg, var(--brand), var(--brand-700));
}

.app__content {
  padding-top: 32px;
}

.app__welcome {
  margin-bottom: 24px;
}

.app__plan {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 10px;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--brand-700);
  background: var(--brand-50);
  border: 1px solid var(--line);
}

.app__plan .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
}

.app__title {
  margin: 0 0 6px;
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.app__lede {
  margin: 0;
  max-width: 56ch;
  color: var(--ink-2);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px;
  box-shadow: var(--sh-1);
}

.stat__k {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}

.stat__v {
  margin: 6px 0 2px;
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat__d {
  margin: 0;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 22px;
  box-shadow: var(--sh-1);
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.skel {
  display: block;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(16, 19, 34, 0.06),
    rgba(16, 19, 34, 0.11),
    rgba(16, 19, 34, 0.06)
  );
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}

.skel--lg {
  width: 60%;
}
.skel--md {
  width: 85%;
}
.skel--sm {
  width: 40%;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* demo controls */
.demo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.demo__label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 2px;
}

.demo__btn {
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-2);
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.demo__btn:hover {
  background: var(--brand-50);
  border-color: var(--brand);
  color: var(--brand-700);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%) translateY(16px);
  background: var(--ink);
  color: var(--white);
  font-size: 0.86rem;
  font-weight: 600;
  padding: 11px 18px;
  border-radius: 999px;
  box-shadow: var(--sh-2);
  opacity: 0;
  transition: opacity 0.22s ease, transform 0.22s ease;
  z-index: 60;
  max-width: calc(100vw - 32px);
}

.toast.is-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
  .app__nav {
    display: none;
  }
}

@media (max-width: 520px) {
  .banner__inner {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px 16px;
  }
  .banner__icon {
    display: none;
  }
  .progress {
    max-width: none;
  }
  .banner__actions {
    width: 100%;
  }
  .btn--cta {
    flex: 1;
    justify-content: center;
  }
  .app {
    padding: 0 16px 48px;
  }
  .app__title {
    font-size: 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Northwind — Trial countdown banner
   Vanilla JS. A live-ish countdown from a fixed fictional trial window,
   a usage progress bar, dismiss-to-collapse, and an expired (red) variant. */
(function () {
  "use strict";

  var TRIAL_DAYS = 14;
  var DAY_MS = 24 * 60 * 60 * 1000;
  var HOUR_MS = 60 * 60 * 1000;
  var MIN_MS = 60 * 1000;

  // Fixed fictional timeline: trial started 11.3 days ago, so ~2 days remain.
  // Kept relative to "now" so the countdown ticks live without a real backend.
  var now = Date.now();
  var trialStart = now - Math.round(11.3 * DAY_MS);
  var trialEnd = trialStart + TRIAL_DAYS * DAY_MS;

  var banner = document.getElementById("banner");
  var head = document.getElementById("banner-head");
  var countText = document.getElementById("count-text");
  var sub = document.getElementById("banner-sub");
  var fill = document.getElementById("progress-fill");
  var bar = document.getElementById("progress-bar");
  var progLabel = document.getElementById("progress-label");
  var addBilling = document.getElementById("add-billing");
  var dismiss = document.getElementById("dismiss");
  var planState = document.getElementById("plan-state");
  var toastEl = document.getElementById("toast");

  var timer = null;
  var toastTimer = null;
  var expired = false;

  /* ---- toast helper ---- */
  function toast(msg) {
    if (!toastEl) return;
    toastEl.textContent = msg;
    toastEl.hidden = false;
    // force reflow so the transition runs on re-show
    void toastEl.offsetWidth;
    toastEl.classList.add("is-show");
    window.clearTimeout(toastTimer);
    toastTimer = window.setTimeout(function () {
      toastEl.classList.remove("is-show");
      window.setTimeout(function () {
        toastEl.hidden = true;
      }, 240);
    }, 2600);
  }

  function plural(n, word) {
    return n + " " + word + (n === 1 ? "" : "s");
  }

  /* ---- format the remaining-time label ---- */
  function formatRemaining(ms) {
    if (ms <= 0) return "0 days";
    var days = Math.floor(ms / DAY_MS);
    var hours = Math.floor((ms % DAY_MS) / HOUR_MS);
    var mins = Math.floor((ms % HOUR_MS) / MIN_MS);
    if (days >= 1) {
      return plural(days, "day") + " " + plural(hours, "hr");
    }
    if (hours >= 1) {
      return plural(hours, "hr") + " " + plural(mins, "min");
    }
    var secs = Math.floor((ms % MIN_MS) / 1000);
    return plural(mins, "min") + " " + plural(secs, "sec");
  }

  /* ---- render the expired (red) state ---- */
  function renderExpired() {
    if (expired) return;
    expired = true;
    window.clearInterval(timer);
    timer = null;

    banner.classList.add("is-expired");
    head.innerHTML = "Your <strong>Pro</strong> trial has ended";
    countText.textContent = "expired";
    sub.textContent =
      "Pro features are paused. Add a billing method to restore analytics, SSO and your projects.";
    fill.style.width = "100%";
    bar.setAttribute("aria-valuenow", "100");
    progLabel.textContent = "Day " + TRIAL_DAYS + " of " + TRIAL_DAYS;
    if (planState) planState.textContent = "ended";
  }

  /* ---- render the active countdown state ---- */
  function renderActive() {
    var remaining = trialEnd - Date.now();
    if (remaining <= 0) {
      renderExpired();
      return;
    }
    var elapsed = Date.now() - trialStart;
    var pct = Math.min(100, Math.max(0, (elapsed / (trialEnd - trialStart)) * 100));
    var dayNum = Math.min(TRIAL_DAYS, Math.floor(elapsed / DAY_MS) + 1);

    countText.textContent = formatRemaining(remaining);
    fill.style.width = pct.toFixed(1) + "%";
    bar.setAttribute("aria-valuenow", String(Math.round(pct)));
    progLabel.textContent = "Day " + dayNum + " of " + TRIAL_DAYS;
  }

  function startTicking() {
    renderActive();
    if (timer) window.clearInterval(timer);
    // tick each second; the seconds only surface in the final minute
    timer = window.setInterval(renderActive, 1000);
  }

  /* ---- dismiss collapses the banner ---- */
  function collapse() {
    var h = banner.offsetHeight;
    banner.style.height = h + "px";
    void banner.offsetWidth;
    banner.classList.add("is-dismissed");
    window.clearInterval(timer);
    timer = null;
    toast("Banner dismissed — find your trial under Billing.");
  }

  /* ---- demo jump controls ---- */
  function jump(state) {
    if (state === "default") {
      expired = false;
      banner.classList.remove("is-expired", "is-dismissed");
      banner.style.height = "";
      head.innerHTML =
        'Your <strong>Pro</strong> trial ends in <span class="banner__count" id="count-text">14 days</span>';
      countText = document.getElementById("count-text");
      sub.textContent =
        "Add a billing method now to keep advanced analytics, SSO and unlimited projects without interruption.";
      if (planState) planState.textContent = "active";
      trialStart = Date.now() - Math.round(11.3 * DAY_MS);
      trialEnd = trialStart + TRIAL_DAYS * DAY_MS;
      startTicking();
      toast("Reset — about 2 days left on the trial.");
    } else if (state === "soon") {
      expired = false;
      banner.classList.remove("is-expired", "is-dismissed");
      banner.style.height = "";
      if (planState) planState.textContent = "active";
      // 25 minutes remaining, so hours/minutes show
      trialEnd = Date.now() + 25 * MIN_MS;
      trialStart = trialEnd - TRIAL_DAYS * DAY_MS;
      startTicking();
      toast("Fast-forwarded — trial ends in 25 minutes.");
    } else if (state === "expired") {
      banner.classList.remove("is-dismissed");
      banner.style.height = "";
      trialEnd = Date.now() - 5 * MIN_MS;
      trialStart = trialEnd - TRIAL_DAYS * DAY_MS;
      expired = false;
      renderExpired();
      toast("Trial forced to expired state.");
    }
  }

  /* ---- wire events ---- */
  dismiss.addEventListener("click", collapse);

  addBilling.addEventListener("click", function () {
    toast(
      expired
        ? "Restoring Pro — opening secure billing…"
        : "Opening secure billing to keep your Pro plan…"
    );
  });

  // Esc dismisses the banner if it's open
  document.addEventListener("keydown", function (e) {
    if (e.key === "Escape" && !banner.classList.contains("is-dismissed")) {
      collapse();
    }
  });

  document.querySelectorAll(".demo__btn").forEach(function (b) {
    b.addEventListener("click", function () {
      jump(b.getAttribute("data-jump"));
    });
  });

  startTicking();
})();

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Northwind — Trial countdown banner</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>
  <!-- Top-of-app trial countdown banner -->
  <div
    class="banner"
    id="banner"
    role="region"
    aria-label="Trial status"
    aria-live="polite"
  >
    <div class="banner__inner">
      <span class="banner__icon" id="banner-icon" aria-hidden="true">
        <svg viewBox="0 0 24 24" width="20" height="20">
          <circle cx="12" cy="13" r="8" fill="none" stroke="currentColor" stroke-width="2" />
          <path d="M12 9v4l2.5 2.5" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" />
          <path d="M9 3h6" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" />
        </svg>
      </span>

      <div class="banner__body">
        <p class="banner__head" id="banner-head">
          Your <strong>Pro</strong> trial ends in
          <span class="banner__count" id="count-text">14 days</span>
        </p>
        <p class="banner__sub" id="banner-sub">
          Add a billing method now to keep advanced analytics, SSO and unlimited projects
          without interruption.
        </p>

        <!-- Trial usage progress -->
        <div class="progress" id="progress-wrap">
          <div
            class="progress__track"
            role="progressbar"
            id="progress-bar"
            aria-label="Trial progress"
            aria-valuemin="0"
            aria-valuemax="100"
            aria-valuenow="0"
          >
            <span class="progress__fill" id="progress-fill"></span>
          </div>
          <span class="progress__label" id="progress-label">Day 0 of 14</span>
        </div>
      </div>

      <div class="banner__actions">
        <button type="button" class="btn btn--cta" id="add-billing">
          <svg viewBox="0 0 24 24" width="16" height="16" aria-hidden="true">
            <rect x="3" y="6" width="18" height="12" rx="2" fill="none" stroke="currentColor" stroke-width="2" />
            <path d="M3 10h18" stroke="currentColor" stroke-width="2" />
          </svg>
          Add billing
        </button>
        <button type="button" class="banner__dismiss" id="dismiss" aria-label="Dismiss trial banner">
          <svg viewBox="0 0 24 24" width="18" height="18" aria-hidden="true">
            <path d="M6 6l12 12M18 6 6 18" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" />
          </svg>
        </button>
      </div>
    </div>
  </div>

  <!-- App chrome behind the banner, for realism -->
  <main class="app" role="main">
    <header class="app__bar">
      <span class="app__brand">
        <svg viewBox="0 0 24 24" width="22" height="22" aria-hidden="true">
          <path d="M13 2 4 14h6l-1 8 9-12h-6l1-8z" fill="currentColor" />
        </svg>
        Northwind
      </span>
      <nav class="app__nav" aria-label="Primary">
        <a href="#" class="app__link is-active">Overview</a>
        <a href="#" class="app__link">Projects</a>
        <a href="#" class="app__link">Insights</a>
        <a href="#" class="app__link">Team</a>
      </nav>
      <span class="app__avatar" aria-hidden="true">DR</span>
    </header>

    <section class="app__content">
      <div class="app__welcome">
        <p class="app__plan">
          <span class="dot" aria-hidden="true"></span>
          Pro trial · <span id="plan-state">active</span>
        </p>
        <h1 class="app__title">Good afternoon, Dana</h1>
        <p class="app__lede">
          You're exploring everything in Pro. Here's a snapshot of your workspace while the
          trial runs.
        </p>
      </div>

      <div class="stat-grid">
        <article class="stat">
          <p class="stat__k">Active projects</p>
          <p class="stat__v">12</p>
          <p class="stat__d">3 added this week</p>
        </article>
        <article class="stat">
          <p class="stat__k">Storage used</p>
          <p class="stat__v">41 GB</p>
          <p class="stat__d">of 100 GB on Pro</p>
        </article>
        <article class="stat">
          <p class="stat__k">Team seats</p>
          <p class="stat__v">7</p>
          <p class="stat__d">2 invites pending</p>
        </article>
      </div>

      <div class="panel" aria-hidden="true">
        <span class="skel skel--lg"></span>
        <span class="skel skel--md"></span>
        <span class="skel skel--sm"></span>
      </div>

      <!-- Demo controls: simulate the trial nearing its end -->
      <div class="demo" role="group" aria-label="Demo controls">
        <span class="demo__label">Demo</span>
        <button type="button" class="demo__btn" data-jump="default">Reset</button>
        <button type="button" class="demo__btn" data-jump="soon">Ends soon</button>
        <button type="button" class="demo__btn" data-jump="expired">Force expired</button>
      </div>
    </section>
  </main>

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

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