Hotel PMS — Reservation Edit

:root {
  --navy: #1a2b4a;
  --navy-d: #0f1d36;
  --navy-2: #2d4570;
  --cream: #f7f3eb;
  --cream-2: #ece5d4;
  --bone: #fbf8f2;
  --gold: #c9a649;
  --gold-light: #e0c378;
  --gold-d: #a88a2e;
  --ink: #161e2c;
  --ink-2: #2e3a52;
  --warm-gray: #6c7280;
  --line: rgba(22, 30, 44, 0.1);
  --line-strong: rgba(22, 30, 44, 0.2);
  --success: #4a7752;
  --danger: #b34232;
  --warning: #d99020;
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --r-sm: 6px;
  --r-md: 10px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  height: 100%;
}
body {
  font-family: var(--font-body);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  background: radial-gradient(circle at 18% 14%, rgba(201, 166, 73, 0.18), transparent 55%),
    radial-gradient(circle at 84% 78%, rgba(74, 109, 160, 0.16), transparent 60%),
    linear-gradient(180deg, #14213b 0%, #0f1d36 100%);
}

.bg {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

/* ── Dialog ── */
.dialog {
  width: min(960px, 100%);
  background: var(--bone);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 40px 100px rgba(15, 29, 54, 0.55);
  display: flex;
  flex-direction: column;
  max-height: 92vh;
}
.d-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 22px 28px 18px;
  border-bottom: 1px solid var(--line);
}
.kicker {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold-d);
  font-weight: 700;
  font-family: var(--font-mono);
}
.d-head h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  margin-top: 2px;
  color: var(--navy-d);
}
.d-head h2 span {
  color: var(--gold-d);
}
.d-close {
  background: transparent;
  border: 1px solid var(--line-strong);
  width: 36px;
  height: 36px;
  border-radius: 999px;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--ink-2);
  line-height: 1;
}
.d-close:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.d-body {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  padding: 24px 28px;
  overflow-y: auto;
}

/* ── Form ── */
.form fieldset {
  border: none;
  margin-bottom: 18px;
  padding: 14px 16px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.form legend {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold-d);
  font-weight: 700;
  padding: 0 6px;
  background: var(--cream);
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.field span {
  font-size: 0.74rem;
  color: var(--warm-gray);
  font-weight: 600;
}
.field input,
.field select,
.form textarea {
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--bone);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  padding: 9px 12px;
  color: var(--ink);
  outline: none;
}
.field input:focus,
.field select:focus,
.form textarea:focus {
  border-color: var(--gold);
}

.nights {
  margin-top: 10px;
  font-size: 0.86rem;
  color: var(--ink-2);
}
.nights strong {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navy-d);
  margin-right: 4px;
}
.form textarea {
  width: 100%;
  resize: vertical;
  font-family: inherit;
  margin-top: 10px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  background: var(--bone);
  border: 1px solid var(--line-strong);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-2);
  padding: 7px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.chip:hover {
  border-color: var(--gold);
  color: var(--gold-d);
}
.chip.is-on {
  background: var(--gold);
  color: var(--navy-d);
  border-color: var(--gold);
}

/* ── Summary ── */
.summary {
  background: var(--navy);
  color: var(--bone);
  border-radius: var(--r-md);
  padding: 22px;
  align-self: start;
  position: sticky;
  top: 0;
}
.summary h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.005em;
  margin-bottom: 14px;
  color: var(--gold-light);
}
.lines {
  list-style: none;
}
.lines li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 7px 0;
  font-size: 0.82rem;
  color: rgba(251, 248, 242, 0.78);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}
.lines li:last-child {
  border-bottom: none;
}
.lines li span:last-child {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--bone);
}
.lines li.total {
  margin-top: 6px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  border-bottom: none;
  font-weight: 700;
}
.lines li.total span:first-child {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold-light);
}
.lines li.total span:last-child {
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--gold-light);
}
.deposit {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 255, 255, 0.18);
  font-size: 0.78rem;
  color: rgba(251, 248, 242, 0.65);
}
.deposit strong {
  color: var(--bone);
  font-weight: 600;
}
.diff {
  margin-top: 14px;
  background: rgba(201, 166, 73, 0.15);
  border: 1px solid rgba(201, 166, 73, 0.4);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  font-size: 0.8rem;
}
.diff strong {
  display: block;
  font-weight: 600;
  font-size: 0.86rem;
  color: var(--gold-light);
}
.diff strong span {
  font-family: var(--font-mono);
}
.diff small {
  font-size: 0.74rem;
  color: rgba(251, 248, 242, 0.6);
  display: block;
  margin-top: 4px;
}

/* ── Footer ── */
.d-foot {
  border-top: 1px solid var(--line);
  background: var(--cream);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.d-foot-right {
  display: flex;
  gap: 8px;
}
.ghost,
.primary {
  font-family: inherit;
  font-weight: 600;
  font-size: 0.86rem;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
}
.ghost {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
}
.ghost:hover {
  border-color: var(--navy-2);
  color: var(--navy-d);
}
.primary {
  background: var(--navy);
  color: var(--bone);
  border: none;
}
.primary:hover {
  background: var(--navy-d);
}
.d-foot .ghost:first-child:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--navy-d);
  color: var(--bone);
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(22, 30, 44, 0.18);
}

@media (max-width: 880px) {
  .d-body {
    grid-template-columns: 1fr;
  }
  .summary {
    position: static;
  }
  .d-foot {
    flex-direction: column;
    align-items: stretch;
  }
  .d-foot-right {
    justify-content: flex-end;
  }
}

const ORIGINAL_TOTAL = 1205.5;
const CITY_PER_GUEST_NIGHT = 1.65;
const fmt = (n) =>
  `€${n.toLocaleString("en-GB", { minimumFractionDigits: 2, maximumFractionDigits: 2 })}`;
const fmtSigned = (n) =>
  `${n < 0 ? "−" : "+"}€${Math.abs(n).toLocaleString("en-GB", { minimumFractionDigits: 2, maximumFractionDigits: 2 })}`;

const $ = (id) => document.getElementById(id);
const arrive = $("arrive");
const depart = $("depart");
const cat = $("cat");
const plan = $("plan");
const adults = $("adults");
const children = $("children");
const cots = $("cots");
const toast = $("toast");

function diffNights() {
  const a = new Date(arrive.value);
  const d = new Date(depart.value);
  if (isNaN(a) || isNaN(d)) return 0;
  return Math.max(1, Math.round((d - a) / 86400000));
}

function calc() {
  const nights = diffNights();
  const rate = parseFloat(cat.selectedOptions[0].dataset.rate);
  const mult = parseFloat(plan.selectedOptions[0].dataset.mult);
  const guests =
    Math.max(1, parseInt(adults.value || 1, 10)) + Math.max(0, parseInt(children.value || 0, 10));
  const base = nights * rate;
  const discount = base * (mult - 1);
  const city = guests * CITY_PER_GUEST_NIGHT * nights;
  const total = base + discount + city;
  return { nights, rate, mult, guests, base, discount, city, total };
}

function render() {
  const { nights, rate, mult, guests, base, discount, city, total } = calc();
  $("nights").textContent = nights;
  $("sNights").textContent = nights;
  $("sNights2").textContent = nights;
  $("sRate").textContent = rate;
  $("sBase").textContent = fmt(base);
  $("sMult").textContent = mult === 1 ? "no change" : `${Math.round((mult - 1) * 100)}%`;
  $("sDisc").textContent = discount === 0 ? "—" : fmtSigned(discount);
  $("sGuestsLbl").textContent = guests;
  $("sCity").textContent = fmt(city);
  $("sTotal").textContent = fmt(total);
  $("diffAmt").textContent = fmtSigned(total - ORIGINAL_TOTAL);
}

[arrive, depart, cat, plan, adults, children, cots].forEach((el) =>
  el.addEventListener("input", render)
);
document.getElementById("chips").addEventListener("click", (e) => {
  const c = e.target.closest(".chip");
  if (!c) return;
  c.classList.toggle("is-on");
});
document.getElementById("save").addEventListener("click", () => {
  toast.textContent = `Saved · confirmation re-issued (${fmtSigned(calc().total - ORIGINAL_TOTAL)})`;
  toast.hidden = false;
  clearTimeout(window.__t);
  window.__t = setTimeout(() => (toast.hidden = true), 2000);
});
document.querySelector(".d-close").addEventListener("click", () => {
  toast.textContent = "Closed without saving";
  toast.hidden = false;
  clearTimeout(window.__t);
  window.__t = setTimeout(() => (toast.hidden = true), 1400);
});

render();

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      rel="stylesheet"
      href="https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;700&display=swap"
    />
    <link rel="stylesheet" href="style.css" />
    <title>Edit Reservation · Aurelia Hotels</title>
  </head>
  <body>
    <div class="bg">
      <section class="dialog" role="dialog" aria-modal="true" aria-labelledby="dTitle">
        <header class="d-head">
          <div>
            <p class="kicker">AUR-21847</p>
            <h2 id="dTitle">Edit reservation · <span>Aiko Tanaka</span></h2>
          </div>
          <button class="d-close" aria-label="Close">×</button>
        </header>

        <div class="d-body">
          <form class="form" id="form">
            <fieldset>
              <legend>Stay dates</legend>
              <div class="grid-2">
                <label class="field"><span>Arrival</span>
                  <input id="arrive" type="date" value="2026-05-24" />
                </label>
                <label class="field"><span>Departure</span>
                  <input id="depart" type="date" value="2026-05-29" />
                </label>
              </div>
              <p class="nights"><strong id="nights">5</strong> nights · <span id="checkTime">15:00 → 12:00</span></p>
            </fieldset>

            <fieldset>
              <legend>Room &amp; rate</legend>
              <label class="field"><span>Room category</span>
                <select id="cat">
                  <option value="single" data-rate="142">Single Standard · €142/night</option>
                  <option value="double" data-rate="184">Classic Double · €184/night</option>
                  <option value="twin" data-rate="184">Twin Standard · €184/night</option>
                  <option value="deluxe" data-rate="232">Deluxe Double · €232/night</option>
                  <option value="junior" data-rate="241" selected>Junior Suite · €241/night</option>
                  <option value="exec" data-rate="412">Executive Suite · €412/night</option>
                  <option value="ph" data-rate="612">Penthouse · €612/night</option>
                </select>
              </label>
              <label class="field"><span>Rate plan</span>
                <select id="plan">
                  <option value="bar" data-mult="1">Flex BAR (refundable)</option>
                  <option value="promo" data-mult="0.88" selected>Promo · −12% non-refundable</option>
                  <option value="ci" data-mult="0.78">Corporate Innovo · −22%</option>
                  <option value="bb" data-mult="1.06">B&amp;B · +€18/night</option>
                </select>
              </label>
            </fieldset>

            <fieldset>
              <legend>Guests</legend>
              <div class="grid-3">
                <label class="field"><span>Adults</span>
                  <input id="adults" type="number" min="1" max="6" value="2" />
                </label>
                <label class="field"><span>Children</span>
                  <input id="children" type="number" min="0" max="4" value="0" />
                </label>
                <label class="field"><span>Cots</span>
                  <input id="cots" type="number" min="0" max="2" value="0" />
                </label>
              </div>
            </fieldset>

            <fieldset>
              <legend>Special requests</legend>
              <div class="chips" id="chips">
                <button type="button" class="chip" data-tag="high-floor">High floor</button>
                <button type="button" class="chip is-on" data-tag="quiet">Quiet room</button>
                <button type="button" class="chip" data-tag="late-checkin">Late check-in</button>
                <button type="button" class="chip is-on" data-tag="vegan">Vegan breakfast</button>
                <button type="button" class="chip" data-tag="airport">Airport pickup</button>
                <button type="button" class="chip" data-tag="celebration">Anniversary setup</button>
              </div>
              <textarea id="notes" placeholder="Internal notes (visible to staff only)…" rows="3">Guest prefers king bed; arrival possibly after 22:00.</textarea>
            </fieldset>
          </form>

          <aside class="summary">
            <h3>Rate summary</h3>
            <ul class="lines">
              <li><span><span id="sNights">5</span> nights × €<span id="sRate">241</span></span><span id="sBase">€1,205.00</span></li>
              <li><span>Promo · <span id="sMult">−12%</span></span><span id="sDisc">−€144.60</span></li>
              <li><span>City tax · <span id="sGuestsLbl">2</span> × €1.65 × <span id="sNights2">5</span></span><span id="sCity">€16.50</span></li>
              <li class="total"><span>Total stay</span><span id="sTotal">€1,076.90</span></li>
            </ul>

            <div class="deposit">
              <p><strong>Deposit on file:</strong> €100 · captured on Visa •••• 4421</p>
            </div>

            <div class="diff" id="diff">
              <strong>Δ vs original: <span id="diffAmt">−€128.60</span></strong>
              <small>Original confirmation issued at €1,205.50 · re-issue confirmation on save.</small>
            </div>
          </aside>
        </div>

        <footer class="d-foot">
          <button class="ghost">Cancel reservation</button>
          <div class="d-foot-right">
            <button class="ghost">Send updated confirmation</button>
            <button class="primary" id="save">Save changes</button>
          </div>
        </footer>
      </section>
    </div>

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

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