Reservation Booking Form

:root {
  --cream: #f5f0e8;
  --cream-2: #ece4d4;
  --bone: #faf7f1;
  --terracotta: #c1714a;
  --terracotta-d: #a05a38;
  --forest: #2d4a3e;
  --forest-d: #1e3329;
  --gold: #c9a84c;
  --gold-light: #e6c97a;
  --ink: #2c1a0e;
  --ink-2: #4a3828;
  --warm-gray: #7a6a58;
  --success: #4f7a3a;
  --danger: #b3432a;
  --warning: #d99020;
  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --shadow-1: 0 1px 2px rgba(44, 26, 14, 0.08), 0 2px 6px rgba(44, 26, 14, 0.06);
  --shadow-2: 0 8px 24px rgba(44, 26, 14, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: var(--font-body);
  background: linear-gradient(180deg, var(--cream-2) 0%, var(--cream) 100%);
  color: var(--ink);
  min-height: 100vh;
  padding: 36px 16px 56px;
  display: flex;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
}

.card {
  width: 100%;
  max-width: 560px;
  background: var(--bone);
  border: 1px solid rgba(44, 26, 14, 0.08);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-2);
  padding: 32px 30px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Head ── */
.card-head {
  text-align: center;
}
.kicker {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--terracotta);
  font-weight: 600;
  margin-bottom: 6px;
}
.card-head h1 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.015em;
}
.sub {
  margin-top: 4px;
  font-size: 0.86rem;
  color: var(--warm-gray);
  font-style: italic;
}

/* ── Form base ── */
.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field-label {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-2);
  font-weight: 700;
}
.optional {
  font-weight: 500;
  color: var(--warm-gray);
  letter-spacing: 0;
  text-transform: none;
  font-size: 0.7rem;
}
.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
input,
textarea {
  border: 1px solid rgba(44, 26, 14, 0.12);
  background: var(--cream);
  border-radius: var(--r-md);
  padding: 11px 14px;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
  resize: vertical;
}
input:focus,
textarea:focus {
  border-color: var(--terracotta);
}
input:invalid:not(:placeholder-shown) {
  border-color: var(--danger);
}

/* ── Party size ── */
.party {
  display: flex;
  align-items: center;
  background: var(--cream);
  border: 1px solid rgba(44, 26, 14, 0.12);
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
}
.party-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--bone);
  border: 1px solid rgba(44, 26, 14, 0.12);
  color: var(--ink);
  font-family: inherit;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  display: grid;
  place-items: center;
  line-height: 1;
  transition: background 0.15s;
}
.party-btn:hover {
  background: var(--cream-2);
  color: var(--terracotta-d);
}
.party-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.party-display {
  flex: 1;
  text-align: center;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
}
.party-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--ink);
}
.party-word {
  font-size: 0.85rem;
  color: var(--warm-gray);
}
.party-hint {
  font-size: 0.8rem;
  color: var(--warning);
  background: rgba(217, 144, 32, 0.12);
  padding: 8px 12px;
  border-radius: var(--r-md);
  border-left: 3px solid var(--warning);
  margin-top: 4px;
}

/* ── Dates scroller ── */
.dates {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: thin;
}
.date {
  background: var(--cream);
  border: 1px solid rgba(44, 26, 14, 0.12);
  border-radius: var(--r-md);
  padding: 8px 10px;
  font-family: inherit;
  cursor: pointer;
  min-width: 60px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.date:hover {
  border-color: var(--terracotta);
}
.date-dow {
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--warm-gray);
}
.date-day {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
}
.date-month {
  font-size: 0.66rem;
  color: var(--warm-gray);
}
.date.is-active {
  background: var(--forest);
  border-color: var(--forest-d);
  color: var(--bone);
}
.date.is-active .date-dow,
.date.is-active .date-month {
  color: var(--gold-light);
}

/* ── Time slots ── */
.slots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 6px;
}
.slot {
  background: var(--cream);
  border: 1px solid rgba(44, 26, 14, 0.12);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink);
  padding: 10px 4px;
  cursor: pointer;
  position: relative;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.slot:hover:not(:disabled) {
  border-color: var(--terracotta);
  color: var(--terracotta-d);
}
.slot.is-recommended::after {
  content: "";
  position: absolute;
  top: 4px;
  right: 4px;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 999px;
}
.slot.is-active {
  background: var(--forest);
  color: var(--bone);
  border-color: var(--forest-d);
}
.slot:disabled {
  background: var(--cream-2);
  color: var(--warm-gray);
  cursor: not-allowed;
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
  opacity: 0.7;
}
.slot-hint {
  font-size: 0.72rem;
  color: var(--warm-gray);
  display: flex;
  gap: 12px;
  margin-top: 4px;
}
.dot-rec,
.dot-disabled {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  margin-right: 4px;
  vertical-align: middle;
}
.dot-rec {
  background: var(--gold);
}
.dot-disabled {
  background: rgba(44, 26, 14, 0.2);
}

/* ── Occasions ── */
.occasions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.occ {
  background: var(--cream);
  border: 1px solid rgba(44, 26, 14, 0.12);
  border-radius: 999px;
  padding: 7px 14px;
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.occ:hover {
  border-color: var(--terracotta);
}
.occ.is-active {
  background: var(--terracotta);
  color: var(--bone);
  border-color: var(--terracotta-d);
}

/* ── CTA ── */
.cta {
  margin-top: 4px;
  background: var(--forest);
  color: var(--bone);
  border: none;
  border-radius: 999px;
  padding: 14px 22px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background 0.15s, transform 0.05s;
}
.cta:hover {
  background: var(--forest-d);
}
.cta:active {
  transform: scale(0.99);
}
.cta-meta {
  font-family: var(--font-mono);
  font-weight: 700;
  background: rgba(250, 247, 241, 0.18);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
}

/* ── Confirm ── */
.confirm {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 4px 0 0;
  animation: pop 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes pop {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.mark {
  width: 84px;
  height: 84px;
  border-radius: 999px;
  background: rgba(79, 122, 58, 0.14);
  color: var(--success);
  display: grid;
  place-items: center;
}
.confirm h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
}
.confirm-sub {
  font-size: 0.95rem;
  color: var(--ink-2);
  line-height: 1.5;
  max-width: 380px;
}
.confirm-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  width: 100%;
  background: var(--cream);
  border: 1px solid rgba(44, 26, 14, 0.08);
  border-radius: var(--r-md);
  padding: 14px 18px;
}
.confirm-meta div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.confirm-meta dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--warm-gray);
  font-weight: 700;
}
.confirm-meta dd {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink);
}
.confirm-fineprint {
  font-size: 0.78rem;
  color: var(--warm-gray);
}
.confirm-actions {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}
.ghost,
.primary {
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  padding: 10px 18px;
  cursor: pointer;
  transition: background 0.15s;
}
.ghost {
  background: transparent;
  border: 1px solid rgba(44, 26, 14, 0.18);
  color: var(--ink-2);
}
.ghost:hover {
  background: var(--cream-2);
  color: var(--ink);
}
.primary {
  background: var(--forest);
  color: var(--bone);
  border: none;
}
.primary:hover {
  background: var(--forest-d);
}


/* Visibility guard: honor the [hidden] attribute over base display */
.confirm[hidden] {
  display: none;
}

const MIN_PARTY = 1;
const MAX_PARTY = 10;
const RECOMMENDED_SLOT = "20:30";

const SLOT_LABELS = [
  "19:00",
  "19:15",
  "19:30",
  "19:45",
  "20:00",
  "20:15",
  "20:30",
  "20:45",
  "21:00",
  "21:15",
  "21:30",
  "21:45",
  "22:00",
  "22:15",
  "22:30",
];

const DOW = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
const MONTH = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

let party = 2;
let occasion = "none";
let selectedDate = startOfDay(new Date());
let selectedSlot = RECOMMENDED_SLOT;

function startOfDay(d) {
  const x = new Date(d);
  x.setHours(0, 0, 0, 0);
  return x;
}

function isSameDay(a, b) {
  return startOfDay(a).getTime() === startOfDay(b).getTime();
}

function fmtDate(d) {
  if (isSameDay(d, new Date())) return "today";
  const tomorrow = new Date();
  tomorrow.setDate(tomorrow.getDate() + 1);
  if (isSameDay(d, tomorrow)) return "tomorrow";
  return `${DOW[d.getDay()]} ${d.getDate()} ${MONTH[d.getMonth()]}`;
}

// Slot availability is a deterministic function of date + party so the demo feels real.
function slotState(date, slot) {
  const key = `${date.getDate()}-${slot}`;
  let hash = 0;
  for (let i = 0; i < key.length; i++) hash = (hash * 31 + key.charCodeAt(i)) & 0xffffffff;
  const v = Math.abs(hash) % 10;
  // Larger parties have fewer options
  if (party >= 8 && v >= 6) return "taken";
  if (party >= 4 && v >= 8) return "taken";
  if (v === 0) return "taken";
  return "open";
}

const datesEl = document.getElementById("dates");
const slotsEl = document.getElementById("slots");
const occEl = document.getElementById("occasions");
const partyNum = document.getElementById("partyNum");
const partyWord = document.getElementById("partyWord");
const partyHint = document.getElementById("partyHint");
const ctaMeta = document.getElementById("ctaMeta");
const form = document.getElementById("form");
const confirmEl = document.getElementById("confirm");
const confirmSub = document.getElementById("confirmSub");
const confRef = document.getElementById("confRef");
const confEmail = document.getElementById("confEmail");

function renderDates() {
  const days = [];
  for (let i = 0; i < 14; i++) {
    const d = new Date();
    d.setDate(d.getDate() + i);
    days.push(d);
  }
  datesEl.innerHTML = days
    .map((d) => {
      const active = isSameDay(d, selectedDate);
      return `<button type="button" class="date ${active ? "is-active" : ""}"
        data-iso="${startOfDay(d).toISOString()}">
        <span class="date-dow">${DOW[d.getDay()]}</span>
        <span class="date-day">${d.getDate()}</span>
        <span class="date-month">${MONTH[d.getMonth()]}</span>
      </button>`;
    })
    .join("");
}

function renderSlots() {
  slotsEl.innerHTML = SLOT_LABELS.map((label) => {
    const state = slotState(selectedDate, label);
    const isRec = label === RECOMMENDED_SLOT && state === "open";
    const isActive = label === selectedSlot && state === "open";
    return `<button type="button" class="slot ${isActive ? "is-active" : ""} ${isRec ? "is-recommended" : ""}"
      data-slot="${label}" ${state === "taken" ? "disabled" : ""}>${label}</button>`;
  }).join("");
  // If selected slot is no longer available, fall back to the first open.
  if (slotState(selectedDate, selectedSlot) === "taken") {
    const open = SLOT_LABELS.find((s) => slotState(selectedDate, s) === "open");
    selectedSlot = open || "";
    renderSlots();
  }
}

function renderParty() {
  partyNum.textContent = party;
  partyWord.textContent = party === 1 ? "guest" : "guests";
  partyHint.hidden = party < 8;
  document.querySelector('[data-step="-1"]').disabled = party <= MIN_PARTY;
  document.querySelector('[data-step="1"]').disabled = party >= MAX_PARTY;
}

function renderCta() {
  ctaMeta.textContent = `${party} ${party === 1 ? "guest" : "guests"} · ${fmtDate(selectedDate)} · ${selectedSlot}`;
}

function refresh() {
  renderParty();
  renderDates();
  renderSlots();
  renderCta();
}

datesEl.addEventListener("click", (e) => {
  const btn = e.target.closest("[data-iso]");
  if (!btn) return;
  selectedDate = new Date(btn.dataset.iso);
  refresh();
});

slotsEl.addEventListener("click", (e) => {
  const btn = e.target.closest("[data-slot]");
  if (!btn || btn.disabled) return;
  selectedSlot = btn.dataset.slot;
  renderSlots();
  renderCta();
});

document.querySelectorAll("[data-step]").forEach((btn) =>
  btn.addEventListener("click", () => {
    party = Math.min(MAX_PARTY, Math.max(MIN_PARTY, party + Number(btn.dataset.step)));
    renderParty();
    renderSlots();
    renderCta();
  })
);

occEl.addEventListener("click", (e) => {
  const btn = e.target.closest("[data-occ]");
  if (!btn) return;
  occEl.querySelectorAll(".occ").forEach((b) => b.classList.remove("is-active"));
  btn.classList.add("is-active");
  occasion = btn.dataset.occ;
});

// Mark "None" active on load
occEl.querySelector('[data-occ="none"]').classList.add("is-active");

form.addEventListener("submit", (e) => {
  e.preventDefault();
  const name = document.getElementById("name");
  const phone = document.getElementById("phone");
  const email = document.getElementById("email");
  if (!name.value || !phone.value || !email.value) {
    if (!name.value) name.focus();
    else if (!phone.value) phone.focus();
    else email.focus();
    return;
  }
  form.hidden = true;
  confirmEl.hidden = false;
  const ref = `R-${Date.now().toString(36).slice(-5).toUpperCase()}`;
  confRef.textContent = ref;
  confirmSub.textContent = `${party} ${party === 1 ? "guest" : "guests"} on ${fmtDate(selectedDate)} at ${selectedSlot}`;
  confEmail.textContent = email.value;
});

document.getElementById("newRes").addEventListener("click", () => {
  form.reset();
  occEl.querySelectorAll(".occ").forEach((b) => b.classList.remove("is-active"));
  occEl.querySelector('[data-occ="none"]').classList.add("is-active");
  party = 2;
  selectedDate = startOfDay(new Date());
  selectedSlot = RECOMMENDED_SLOT;
  form.hidden = false;
  confirmEl.hidden = true;
  refresh();
});

document.getElementById("addCal").addEventListener("click", () => {
  const btn = document.getElementById("addCal");
  btn.textContent = "Added ✓";
  setTimeout(() => (btn.textContent = "+ Add to calendar"), 1500);
});

refresh();

<!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=Playfair+Display: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>Reserve · Casa Olivar</title>
  </head>
  <body>
    <section class="card">
      <header class="card-head">
        <p class="kicker">Casa Olivar · Reservations</p>
        <h1>Reserve a table</h1>
        <p class="sub">
          Dinner service 19:00–23:00 · Walk-ins welcome at the bar
        </p>
      </header>

      <!-- Form -->
      <form class="form" id="form" novalidate>
        <!-- Party size -->
        <div class="field">
          <label class="field-label">Party size</label>
          <div class="party">
            <button class="party-btn" type="button" data-step="-1" aria-label="Smaller party">−</button>
            <div class="party-display">
              <span class="party-num" id="partyNum">2</span>
              <span class="party-word" id="partyWord">guests</span>
            </div>
            <button class="party-btn" type="button" data-step="1" aria-label="Larger party">+</button>
          </div>
          <p class="party-hint" id="partyHint" hidden>
            Groups of 8+ require a deposit — our host will reach out within
            24 hours.
          </p>
        </div>

        <!-- Date scroller -->
        <div class="field">
          <label class="field-label">Date</label>
          <div class="dates" id="dates"></div>
        </div>

        <!-- Slots -->
        <div class="field">
          <label class="field-label">Time</label>
          <div class="slots" id="slots"></div>
          <p class="slot-hint">
            <span class="dot-rec"></span> Recommended ·
            <span class="dot-disabled"></span> Fully booked
          </p>
        </div>

        <!-- Occasion -->
        <div class="field">
          <label class="field-label">Occasion <span class="optional">(optional)</span></label>
          <div class="occasions" id="occasions">
            <button type="button" class="occ" data-occ="none">None</button>
            <button type="button" class="occ" data-occ="birthday">🎂 Birthday</button>
            <button type="button" class="occ" data-occ="anniversary">💍 Anniversary</button>
            <button type="button" class="occ" data-occ="business">💼 Business</button>
            <button type="button" class="occ" data-occ="date">🌙 Date night</button>
          </div>
        </div>

        <!-- Contact -->
        <div class="row">
          <div class="field">
            <label class="field-label">Full name</label>
            <input type="text" id="name" required placeholder="Lina Mendoza" />
          </div>
          <div class="field">
            <label class="field-label">Phone</label>
            <input type="tel" id="phone" required placeholder="+34 612 442 081" />
          </div>
        </div>
        <div class="field">
          <label class="field-label">Email</label>
          <input type="email" id="email" required placeholder="you@example.com" />
        </div>
        <div class="field">
          <label class="field-label">Notes <span class="optional">(allergies, seating preference)</span></label>
          <textarea id="notes" rows="2" maxlength="240"
            placeholder="e.g. peanut allergy, prefer corner booth"></textarea>
        </div>

        <button class="cta" type="submit">
          <span>Confirm reservation</span>
          <span class="cta-meta" id="ctaMeta">2 guests · today · 20:00</span>
        </button>
      </form>

      <!-- Confirmation -->
      <div class="confirm" id="confirm" hidden>
        <div class="mark" aria-hidden="true">
          <svg viewBox="0 0 24 24" width="36" height="36">
            <path
              d="M20 6 9 17l-5-5"
              fill="none"
              stroke="currentColor"
              stroke-width="2.5"
              stroke-linecap="round"
              stroke-linejoin="round"
            />
          </svg>
        </div>
        <h2>Table booked</h2>
        <p class="confirm-sub" id="confirmSub">—</p>
        <dl class="confirm-meta">
          <div><dt>Reference</dt><dd id="confRef">—</dd></div>
          <div><dt>Held for</dt><dd>15 min</dd></div>
        </dl>
        <p class="confirm-fineprint">
          A confirmation has been sent to <span id="confEmail">—</span>. Cancel
          free up to 2 h before arrival.
        </p>
        <div class="confirm-actions">
          <button class="ghost" type="button" id="addCal">+ Add to calendar</button>
          <button class="primary" type="button" id="newRes">New reservation</button>
        </div>
      </div>
    </section>

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