दिन 29: Major Project 1: Online Shop Catalogue

sharma-shop/
├── index.html          ← page structure, dialogs, script tags
├── css/
│   └── style.css       ← design tokens, grid, dialogs, dark mode
└── js/
    ├── utils.js        ← $, $$, rupees(), formatQty(), debounce(), storage, toast()
    ├── api.js          ← fetchJSON(), getProducts(), placeOrder()
    ├── store.js        ← the single state object + update/subscribe
    ├── catalogue.js    ← load, filter, sort, render cards, URL, details dialog
    ├── cart.js         ← add / change / remove, totals, cart drawer   (Day 30)
    ├── checkout.js     ← validation, POST order, receipt            (Day 30)
    └── app.js          ← wires events and starts the app (runs last)

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Sharma Sweets Online – Order Fresh Mithai in Jaipur</title>
  <meta name="description" content="Order fresh kaju katli, ghewar, rasmalai, ladoo and Diwali gift boxes online from Sharma Sweets, Johari Bazaar, Jaipur. Search, filter, add to cart and checkout in seconds.">
  <meta name="theme-color" content="#c2410c">
  <link rel="stylesheet" href="css/style.css">
  <!-- classic scripts, in order: helpers first, app.js last -->
  <script src="js/utils.js" defer></script>
  <script src="js/api.js" defer></script>
  <script src="js/store.js" defer></script>
  <script src="js/catalogue.js" defer></script>
  <script src="js/cart.js" defer></script>
  <script src="js/checkout.js" defer></script>
  <script src="js/app.js" defer></script>
</head>
<body>
  <a class="skip" href="#main">Skip to products</a>

  <!-- ========== HEADER ========== -->
  <header class="site-header">
    <div class="bar">
      <a class="brand" href="./">🍬 <span>Sharma Sweets</span></a>
      <label class="search">
        <span class="sr-only">Search sweets</span>
        <input id="search" type="search" placeholder="Search kaju, ghewar, gift box…" autocomplete="off">
      </label>
      <div class="header-actions">
        <button class="icon-btn" id="theme-btn" type="button" aria-pressed="false" aria-label="Toggle dark mode">🌓</button>
        <button class="cart-btn" id="cart-btn" type="button" aria-haspopup="dialog">
          🛒 <span class="sr-only">Cart,</span><span class="badge" id="cart-count">0</span><span class="sr-only">items</span>
        </button>
      </div>
    </div>
  </header>

  <main id="main">
    <!-- ========== HERO ========== -->
    <section class="hero">
      <h1>Fresh mithai, delivered in 2 hours 🛵</h1>
      <p>Made every morning in pure desi ghee at Johari Bazaar, Jaipur. Free delivery above ₹1,500 · use <b>SWEET10</b> for 10% off.</p>
    </section>

    <!-- ========== FILTERS ========== -->
    <section class="filters" aria-label="Filter products">
      <div class="chips" id="category-chips" role="group" aria-label="Category">
        <button type="button" class="chip" data-category="" aria-pressed="true">All</button>
        <button type="button" class="chip" data-category="milk" aria-pressed="false">Milk sweets</button>
        <button type="button" class="chip" data-category="dry" aria-pressed="false">Dry sweets</button>
        <button type="button" class="chip" data-category="box" aria-pressed="false">Gift boxes</button>
      </div>
      <div class="filter-row">
        <label>Sort
          <select id="sort">
            <option value="popular">Most popular</option>
            <option value="price-asc">Price: low to high</option>
            <option value="price-desc">Price: high to low</option>
            <option value="name">Name A–Z</option>
          </select>
        </label>
        <label for="max-price">Max price ₹<span id="max-price-out">1000</span></label>
        <input id="max-price" type="range" min="300" max="1000" step="50" value="1000" aria-describedby="max-price-out">
        <label class="check"><input id="in-stock" type="checkbox"> In stock only</label>
      </div>
    </section>

    <!-- ========== PRODUCTS ========== -->
    <p class="results" id="results-text" aria-live="polite"></p>
    <section class="grid" id="product-grid" aria-label="Products"></section>
  </main>

  <!-- ========== PRODUCT DETAIL ========== -->
  <dialog class="modal" id="product-dialog" aria-labelledby="pd-name">
    <form method="dialog"><button class="close" aria-label="Close">✕</button></form>
    <img id="pd-image" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" alt="" width="640" height="360">
    <div class="modal__body">
      <h2 id="pd-name"></h2>
      <p class="muted" id="pd-meta"></p>
      <p id="pd-desc"></p>
      <div class="qty-row">
        <label for="pd-qty">Quantity</label>
        <select id="pd-qty"></select>
        <strong id="pd-price"></strong>
      </div>
      <button class="btn" id="pd-add" type="button">Add to cart</button>
    </div>
  </dialog>

  <!-- ========== CART DRAWER ========== -->
  <dialog class="drawer" id="cart-dialog" aria-labelledby="cart-title">
    <header class="drawer__head">
      <h2 id="cart-title">Your cart</h2>
      <form method="dialog"><button class="close" aria-label="Close cart">✕</button></form>
    </header>
    <ul class="cart-list" id="cart-list"></ul>
    <p class="empty" id="cart-empty">Your cart is empty. Add something sweet! 🍬</p>
    <div class="totals" id="cart-totals">
      <div><span>Subtotal</span><span id="t-subtotal"></span></div>
      <div><span>Delivery</span><span id="t-delivery"></span></div>
      <p class="hint" id="t-hint"></p>
      <div class="grand"><span>Estimated total</span><span id="t-total"></span></div>
      <button class="btn btn--block" id="checkout-btn" type="button">Checkout →</button>
    </div>
  </dialog>

  <!-- ========== CHECKOUT ========== -->
  <dialog class="modal" id="checkout-dialog" aria-labelledby="co-title">
    <form method="dialog"><button class="close" aria-label="Close checkout">✕</button></form>
    <div class="modal__body" id="checkout-body">
      <h2 id="co-title">Checkout</h2>
      <form id="checkout-form" novalidate>
        <div class="field"><label for="co-name">Full name</label><input id="co-name" name="name" autocomplete="name" aria-describedby="co-name-err"><p class="err" id="co-name-err"></p></div>
        <div class="field"><label for="co-phone">Mobile</label><input id="co-phone" name="phone" type="tel" inputmode="numeric" autocomplete="tel" aria-describedby="co-phone-err"><p class="err" id="co-phone-err"></p></div>
        <fieldset class="field">
          <legend>Delivery or pick-up</legend>
          <label class="check"><input type="radio" name="mode" value="delivery" checked> Home delivery</label>
          <label class="check"><input type="radio" name="mode" value="pickup"> Pick up from Johari Bazaar</label>
        </fieldset>
        <div class="field" id="address-field"><label for="co-address">Address (with PIN)</label><textarea id="co-address" name="address" rows="2" autocomplete="street-address" aria-describedby="co-address-err"></textarea><p class="err" id="co-address-err"></p></div>
        <div class="field"><label for="co-coupon">Coupon (optional)</label><input id="co-coupon" name="coupon" placeholder="SWEET10" aria-describedby="co-coupon-err"><p class="err" id="co-coupon-err"></p></div>
        <p class="err" id="co-form-err" role="alert"></p>
        <button class="btn btn--block" id="place-order" type="submit">Place order</button>
      </form>
    </div>
  </dialog>

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

  <footer class="site-footer">
    <p>Sharma Sweets · Shop 14, Johari Bazaar, Jaipur · <a href="tel:+919829012345">+91 98290 12345</a></p>
    <p class="muted">JavaScript course project – orders go to the CodingEasily practice API and are not stored.</p>
  </footer>
</body>
</html>

// =============================================================
//  utils.js – small helpers used everywhere (Days 5, 9, 15, 24)
// =============================================================

const $ = (selector, root = document) => root.querySelector(selector);
const $$ = (selector, root = document) => [...root.querySelectorAll(selector)];

const inr = new Intl.NumberFormat('en-IN', { style: 'currency', currency: 'INR', maximumFractionDigits: 0 });
const rupees = (amount) => inr.format(Math.round(amount));

// 0.5 kg → "500 g", 1.5 kg → "1.5 kg", boxes → "2 boxes"
function formatQty(qty, unit) {
  if (unit === 'box') return qty === 1 ? '1 box' : `${qty} boxes`;
  return qty < 1 ? `${Math.round(qty * 1000)} g` : `${qty} kg`;
}

function debounce(fn, delay) {
  let timer;
  return (...args) => {
    clearTimeout(timer);
    timer = setTimeout(() => fn(...args), delay);
  };
}

// localStorage that never crashes (private mode, sandboxed previews, full quota)
const storage = {
  get(key, fallback) {
    try {
      const raw = localStorage.getItem(key);
      return raw === null ? fallback : JSON.parse(raw);
    } catch (err) {
      return fallback;
    }
  },
  set(key, value) {
    try {
      localStorage.setItem(key, JSON.stringify(value));
      return true;
    } catch (err) {
      return false;
    }
  },
};

let toastTimer;
function toast(message) {
  const box = $('#toast');
  box.textContent = message;
  box.classList.add('show');
  clearTimeout(toastTimer);
  toastTimer = setTimeout(() => box.classList.remove('show'), 2600);
}

// =============================================================
//  api.js – everything that talks to the server (Day 20)
//  The CodingEasily practice API sends CORS headers, so this
//  works from any page – even a file opened from your computer.
// =============================================================

const API_URL = 'https://codingeasily.in/api/sweets/';

async function fetchJSON(url, { timeout = 8000, ...options } = {}) {
  const controller = new AbortController();
  const timer = setTimeout(() => controller.abort(), timeout);
  try {
    const res = await fetch(url, { ...options, signal: controller.signal });
    const data = await res.json().catch(() => null);
    if (!res.ok) {
      const error = new Error(data?.error || `Server error (HTTP ${res.status})`);
      error.status = res.status;
      error.fields = data?.fields || {};
      throw error;
    }
    return data;
  } catch (err) {
    if (err.name === 'AbortError') throw new Error('The server is taking too long. Please try again.');
    if (err instanceof TypeError) throw new Error('You seem to be offline. Check your internet and retry.');
    throw err;
  } finally {
    clearTimeout(timer);
  }
}

// GET all products once – filtering and sorting happen in the browser (only 8 items)
function getProducts() {
  return fetchJSON(API_URL);
}

// POST an order – only ids and quantities are sent; the SERVER calculates prices (Day 26)
function placeOrder({ name, phone, mode, address, coupon, items }) {
  return fetchJSON(API_URL, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ name, phone, mode, address, coupon, items }),
  });
}

// =============================================================
//  store.js – one state object + subscribe/update (Days 12, 25)
// =============================================================

const CART_KEY = 'ss-shop-cart-v1';
const THEME_KEY = 'ss-shop-theme';

const store = (() => {
  let state = {
    products: [],          // from the API
    status: 'loading',     // 'loading' | 'ready' | 'error'
    error: '',
    filters: { q: '', category: '', sort: 'popular', maxPrice: 1000, inStock: false },
    cart: storage.get(CART_KEY, []),     // [{ id, qty }] – only ids, prices come from products
  };
  const listeners = [];

  return {
    get: () => state,
    // every change goes through update(): new object, save the cart, notify the UI
    update(change) {
      state = { ...state, ...(typeof change === 'function' ? change(state) : change) };
      storage.set(CART_KEY, state.cart);
      listeners.forEach((fn) => fn(state));
    },
    subscribe(fn) {
      listeners.push(fn);
    },
  };
})();

const POPULARITY = { 1: 1, 2: 2, 7: 3, 3: 4, 4: 5, 8: 6, 6: 7, 5: 8 };   // best sellers first

async function loadProducts() {
  store.update({ status: 'loading', error: '' });
  try {
    const products = await getProducts();
    store.update({ products, status: 'ready' });
  } catch (err) {
    store.update({ status: 'error', error: err.message });
  }
}

function visibleProducts({ products, filters }) {
  const q = filters.q.trim().toLowerCase();
  const list = products
    .filter((p) => !q || p.name.toLowerCase().includes(q) || p.description.toLowerCase().includes(q))
    .filter((p) => !filters.category || p.category === filters.category)
    .filter((p) => p.price <= filters.maxPrice)
    .filter((p) => !filters.inStock || p.stock > 0);
  const sorters = {
    popular: (a, b) => POPULARITY[a.id] - POPULARITY[b.id],
    'price-asc': (a, b) => a.price - b.price,
    'price-desc': (a, b) => b.price - a.price,
    name: (a, b) => a.name.localeCompare(b.name),
  };
  return [...list].sort(sorters[filters.sort] || sorters.popular);
}

// the same pure function, tested in Node with sample data
const products = [
  { id: 1, name: 'Kaju Katli', description: 'Cashew fudge', category: 'dry', price: 900, stock: 25 },
  { id: 2, name: 'Malai Ghewar', description: 'Honeycomb disc', category: 'milk', price: 650, stock: 8 },
  { id: 5, name: 'Kalakand', description: 'Milk cake', category: 'milk', price: 600, stock: 0 },
  { id: 6, name: 'Soan Papdi', description: 'Flaky layers', category: 'dry', price: 380, stock: 60 },
];
function visible({ products, filters }) {
  const q = filters.q.trim().toLowerCase();
  return products
    .filter((p) => !q || p.name.toLowerCase().includes(q))
    .filter((p) => !filters.category || p.category === filters.category)
    .filter((p) => p.price <= filters.maxPrice)
    .filter((p) => !filters.inStock || p.stock > 0)
    .sort((a, b) => a.price - b.price)
    .map((p) => `${p.name} ₹${p.price}`);
}
const base = { q: '', category: '', maxPrice: 1000, inStock: false };
console.log('All:', visible({ products, filters: base }));
console.log('Milk:', visible({ products, filters: { ...base, category: 'milk' } }));
console.log('Milk, in stock:', visible({ products, filters: { ...base, category: 'milk', inStock: true } }));
console.log('Under ₹700:', visible({ products, filters: { ...base, maxPrice: 700 } }));
console.log('Search "kaju":', visible({ products, filters: { ...base, q: 'KAJU ' } }));

function productCard(p) {
  const card = document.createElement('article');
  card.className = 'card' + (p.stock === 0 ? ' card--out' : '');

  const media = document.createElement('button');            // image opens the details dialog
  media.type = 'button';
  media.className = 'card__media';
  media.dataset.action = 'details';
  media.dataset.id = p.id;
  media.setAttribute('aria-label', `View details of ${p.name}`);
  const img = document.createElement('img');
  img.src = p.image;
  img.alt = '';
  img.loading = 'lazy';
  media.append(img);
  if (p.stock === 0 || p.stock < 10) {
    const tag = document.createElement('span');
    tag.className = 'card__tag' + (p.stock === 0 ? '' : ' card__tag--low');
    tag.textContent = p.stock === 0 ? 'Sold out' : `Only ${p.stock} left`;
    media.append(tag);
  }

  const body = document.createElement('div');
  body.className = 'card__body';
  const title = document.createElement('h3');
  title.className = 'card__title';
  title.textContent = p.name;
  const desc = document.createElement('p');
  desc.className = 'muted';
  desc.textContent = p.description;
  const price = document.createElement('span');
  price.className = 'card__price';
  price.textContent = `${rupees(p.price)} / ${p.unit}  ·  ★ ${p.rating}`;
  const add = document.createElement('button');
  add.type = 'button';
  add.className = 'btn';
  add.dataset.action = 'add';
  add.dataset.id = p.id;
  add.disabled = p.stock === 0;
  add.textContent = p.stock === 0 ? 'Sold out' : `Add ${p.unit === 'box' ? '1 box' : '½ kg'}`;
  body.append(title, desc, price, add);

  card.append(media, body);
  return card;
}

function renderCatalogue(state) {
  const grid = $('#product-grid');
  const results = $('#results-text');
  if (state.status === 'loading') {
    results.textContent = 'Loading fresh sweets…';
    grid.innerHTML = '<div class="skeleton"></div>'.repeat(4);
    grid.setAttribute('aria-busy', 'true');
    return;
  }
  grid.removeAttribute('aria-busy');
  if (state.status === 'error') {
    results.textContent = '';
    const box = document.createElement('div');
    box.className = 'state';
    box.textContent = '⚠️ ' + state.error + ' ';
    const retry = document.createElement('button');
    retry.className = 'btn';
    retry.dataset.action = 'retry';
    retry.textContent = 'Try again';
    box.append(retry);
    grid.replaceChildren(box);
    return;
  }
  const list = visibleProducts(state);
  results.textContent = `${list.length} of ${state.products.length} sweets`;
  if (list.length === 0) {
    grid.innerHTML = '<div class="state">No sweets match these filters. <button class="btn btn--ghost" data-action="reset">Clear filters</button></div>';
    return;
  }
  grid.replaceChildren(...list.map(productCard));
}

// ---- filter controls ↔ state ↔ URL ----
function filtersToUrl(filters) {
  const params = new URLSearchParams();
  if (filters.q) params.set('q', filters.q);
  if (filters.category) params.set('category', filters.category);
  if (filters.sort !== 'popular') params.set('sort', filters.sort);
  if (filters.maxPrice !== 1000) params.set('max', filters.maxPrice);
  if (filters.inStock) params.set('stock', '1');
  const url = location.pathname + (params.toString() ? '?' + params : '');
  try { history.replaceState(null, '', url); } catch (err) { /* sandboxed preview */ }
}

function filtersFromUrl() {
  const p = new URLSearchParams(location.search);
  return {
    q: p.get('q') || '',
    category: ['milk', 'dry', 'box'].includes(p.get('category')) ? p.get('category') : '',
    sort: ['popular', 'price-asc', 'price-desc', 'name'].includes(p.get('sort')) ? p.get('sort') : 'popular',
    maxPrice: Math.min(1000, Math.max(300, Number(p.get('max')) || 1000)),
    inStock: p.get('stock') === '1',
  };
}

function syncFilterControls({ filters }) {
  $('#search').value = filters.q;
  $('#sort').value = filters.sort;
  $('#max-price').value = filters.maxPrice;
  $('#max-price-out').textContent = filters.maxPrice;
  $('#in-stock').checked = filters.inStock;
  $$('#category-chips .chip').forEach((chip) => chip.setAttribute('aria-pressed', String(chip.dataset.category === filters.category)));
}

function setFilter(change) {
  store.update((s) => ({ filters: { ...s.filters, ...change } }));
  filtersToUrl(store.get().filters);
}

// ---- product details dialog ----
function openDetails(id) {
  const p = store.get().products.find((x) => x.id === id);
  if (!p) return;
  const dialog = $('#product-dialog');
  $('#pd-image').src = p.image.replace('-400.webp', '.webp');
  $('#pd-image').alt = p.name;
  $('#pd-name').textContent = p.name;
  $('#pd-meta').textContent = `★ ${p.rating} · ${p.category === 'box' ? 'Gift box' : p.category === 'milk' ? 'Milk sweet – eat within 2 days' : 'Dry sweet – stays fresh 15 days'}`;
  $('#pd-desc').textContent = p.description;
  const qty = $('#pd-qty');
  const options = p.unit === 'box' ? [1, 2, 3, 5, 10] : [0.25, 0.5, 1, 1.5, 2, 5];
  qty.replaceChildren(...options.map((q) => new Option(formatQty(q, p.unit), q)));
  qty.value = p.unit === 'box' ? 1 : 0.5;
  const updatePrice = () => { $('#pd-price').textContent = rupees(p.price * Number(qty.value)); };
  qty.onchange = updatePrice;
  updatePrice();
  const add = $('#pd-add');
  add.disabled = p.stock === 0;
  add.textContent = p.stock === 0 ? 'Sold out' : 'Add to cart';
  add.onclick = () => { addToCart(p.id, Number(qty.value)); dialog.close(); };
  dialog.showModal();
}

// =============================================================
//  app.js – wires everything together (runs last)
//  1. Theme   2. Render on every state change   3. Events
//  4. Start
// =============================================================

// ---------- 1. THEME (Day 15 storage + CSS variables) ----------
function applyTheme(theme) {
  document.documentElement.classList.toggle('dark', theme === 'dark');
  $('#theme-btn').setAttribute('aria-pressed', String(theme === 'dark'));
}
const savedTheme = storage.get(THEME_KEY, matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
applyTheme(savedTheme);

// ---------- 2. RENDER ON EVERY STATE CHANGE ----------
store.subscribe((state) => {
  renderCatalogue(state);
  renderCart(state);
});

// ---------- 3. EVENTS ----------
// search (debounced, Day 24)
$('#search').addEventListener('input', debounce((e) => setFilter({ q: e.target.value }), 250));

// category chips (delegation, Day 11)
$('#category-chips').addEventListener('click', (e) => {
  const chip = e.target.closest('.chip');
  if (chip) setFilter({ category: chip.dataset.category });
  syncFilterControls(store.get());
});

$('#sort').addEventListener('change', (e) => setFilter({ sort: e.target.value }));
$('#max-price').addEventListener('input', (e) => {
  $('#max-price-out').textContent = e.target.value;
  setFilter({ maxPrice: Number(e.target.value) });
});
$('#in-stock').addEventListener('change', (e) => setFilter({ inStock: e.target.checked }));

// product grid: add / details / retry / reset (one delegated listener)
$('#product-grid').addEventListener('click', (e) => {
  const target = e.target.closest('[data-action]');
  if (!target) return;
  const id = Number(target.dataset.id);
  if (target.dataset.action === 'add') addToCart(id);
  if (target.dataset.action === 'details') openDetails(id);
  if (target.dataset.action === 'retry') loadProducts();
  if (target.dataset.action === 'reset') {
    store.update({ filters: { q: '', category: '', sort: 'popular', maxPrice: 1000, inStock: false } });
    filtersToUrl(store.get().filters);
    syncFilterControls(store.get());
  }
});

// cart drawer
$('#cart-btn').addEventListener('click', () => $('#cart-dialog').showModal());
$('#cart-list').addEventListener('click', (e) => {
  const btn = e.target.closest('[data-action]');
  if (!btn) return;
  const id = Number(btn.closest('.cart-item').dataset.id);
  if (btn.dataset.action === 'inc') changeQty(id, +1);
  if (btn.dataset.action === 'dec') changeQty(id, -1);
  if (btn.dataset.action === 'remove') removeFromCart(id);
});
$('#checkout-btn').addEventListener('click', openCheckout);

// checkout (the form element is kept so it can be restored after a receipt)
checkoutFormNodes = [...$('#checkout-body').childNodes];
$('#checkout-form').addEventListener('submit', submitCheckout);
$('#checkout-form').addEventListener('change', (e) => { if (e.target.name === 'mode') updateAddressVisibility(); });
$('#checkout-form').addEventListener('input', (e) => {
  if (e.target.getAttribute('aria-invalid') === 'true') {
    const rule = checkoutRules[e.target.name];
    const result = rule ? rule(e.target.value, e.currentTarget) : true;
    setFieldError(e.currentTarget, e.target.name, result === true ? '' : result);
  }
});

// clicking the dark backdrop closes any dialog
$$('dialog').forEach((dialog) => dialog.addEventListener('click', (e) => { if (e.target === dialog) dialog.close(); }));

// theme toggle
$('#theme-btn').addEventListener('click', () => {
  const next = document.documentElement.classList.contains('dark') ? 'light' : 'dark';
  applyTheme(next);
  storage.set(THEME_KEY, next);
});

// keep the cart in sync between open tabs (Day 15)
window.addEventListener('storage', (e) => {
  if (e.key === CART_KEY) store.update({ cart: storage.get(CART_KEY, []) });
});

// "/" focuses search
document.addEventListener('keydown', (e) => {
  if (e.key === '/' && !['INPUT', 'TEXTAREA', 'SELECT'].includes(document.activeElement.tagName)) {
    e.preventDefault();
    $('#search').focus();
  }
});

// ---------- 4. START ----------
store.update({ filters: filtersFromUrl() });
syncFilterControls(store.get());
loadProducts();

/* Sharma Sweets online shop – styles (CSS course techniques) */
:root {
  --brand: #c2410c; --brand-600: #9a3412; --gold: #f59e0b; --gold-soft: #fef3c7; --on-brand: #fff;
  --ink: #2b1a12; --text: #44342b; --muted: #7c6a5e; --line: #f0e2d4; --bg: #fffaf3; --surface: #fff;
  --ok: #15803d; --bad: #b91c1c; --radius: 16px; --shadow: 0 10px 30px rgb(87 46 18 / 10%);
}
:root.dark {
  --ink: #fdf2e6; --text: #e9dccf; --muted: #b9a797; --line: #3a2a20; --bg: #1a120d; --surface: #241912;
  --gold-soft: #3d2a12; --brand: #f97316; --brand-600: #fb923c; --on-brand: #1a120d; --shadow: 0 10px 30px rgb(0 0 0 / 45%);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }   /* the one allowed !important: display:grid must never beat the hidden attribute */
body { margin: 0; font-family: system-ui, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.55; }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3 { color: var(--ink); line-height: 1.2; }
a { color: var(--brand); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 8px; top: 8px; z-index: 100; background: var(--surface); padding: 8px; }
.muted { color: var(--muted); }

/* header */
.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.bar { width: min(1120px, 100% - 24px); margin: auto; display: flex; align-items: center; gap: 12px; min-height: 64px; flex-wrap: wrap; padding-block: 8px; }
.brand { font-weight: 800; font-size: 1.2rem; text-decoration: none; color: var(--ink); white-space: nowrap; }
.search { flex: 1 1 220px; }
.search input { width: 100%; padding: 10px 14px; border-radius: 99px; border: 1.5px solid var(--line); background: var(--surface); }
.header-actions { display: flex; gap: 8px; margin-left: auto; }
@media (max-width: 560px) { .search { order: 3; flex-basis: 100%; } }
.icon-btn, .cart-btn { border: 1.5px solid var(--line); background: var(--surface); border-radius: 99px; padding: 8px 14px; }
.cart-btn { background: var(--brand); color: var(--on-brand); border-color: var(--brand); font-weight: 700; display: flex; gap: 6px; align-items: center; }
.badge { background: var(--on-brand); color: var(--brand); border-radius: 99px; min-width: 24px; padding: 0 6px; text-align: center; font-size: .85rem; }
.badge.bump { animation: bump .4s; }
@keyframes bump { 50% { transform: scale(1.4); } }

main { width: min(1120px, 100% - 24px); margin: auto; padding-bottom: 40px; }
.hero { padding: 28px 0 8px; }
.hero h1 { margin: 0 0 6px; font-size: clamp(1.5rem, 1.1rem + 2vw, 2.4rem); }
.hero p { margin: 0; max-width: 65ch; }

/* filters */
.filters { display: grid; gap: 10px; margin: 18px 0 8px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { border: 1.5px solid var(--line); background: var(--surface); border-radius: 99px; padding: 6px 14px; font-weight: 600; }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.filter-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.filter-row label { display: flex; gap: 8px; align-items: center; font-weight: 600; }
.filter-row select { padding: 6px 10px; border-radius: 8px; border: 1.5px solid var(--line); background: var(--surface); }
.filter-row input[type="range"] { accent-color: var(--brand); margin-left: -8px; }
.check { display: inline-flex; gap: 8px; align-items: center; font-weight: 500; }
.check input { accent-color: var(--brand); width: 18px; height: 18px; }
.results { color: var(--muted); margin: 8px 0 12px; }

/* product grid */
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
.card { display: flex; flex-direction: column; background: var(--surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s; }
.card:hover { transform: translateY(-4px); }
.card__media { position: relative; border: 0; padding: 0; background: none; }
.card__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--gold-soft); }
.card__tag { position: absolute; top: 10px; left: 10px; background: var(--bad); color: #fff; font-size: .75rem; font-weight: 700; padding: 3px 8px; border-radius: 6px; }
.card__tag--low { background: var(--gold); color: #1a120d; }
.card__body { padding: 12px 14px 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.card__title { margin: 0; font-size: 1.05rem; }
.card__price { font-weight: 800; color: var(--brand); }
.card__body .btn { margin-top: auto; }
.card--out { opacity: .6; }
.skeleton { height: 290px; border-radius: var(--radius); background: linear-gradient(90deg, var(--line) 25%, var(--surface) 50%, var(--line) 75%); background-size: 200% 100%; animation: shimmer 1.2s linear infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }
.state { grid-column: 1 / -1; text-align: center; padding: 30px; background: var(--surface); border-radius: var(--radius); }

/* buttons */
.btn { display: inline-block; text-align: center; text-decoration: none; background: var(--brand); color: var(--on-brand); border: 0; border-radius: 10px; padding: 10px 16px; font-weight: 700; transition: background-color .2s, transform .1s; }
.btn:hover { background: var(--brand-600); }
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn--ghost { background: transparent; color: var(--brand); border: 1.5px solid var(--brand); }
.btn--block { width: 100%; }

/* dialogs */
dialog { border: 0; padding: 0; color: var(--text); background: var(--surface); box-shadow: 0 30px 60px rgb(0 0 0 / 35%); }
dialog::backdrop { background: rgb(26 18 13 / 55%); backdrop-filter: blur(2px); }
.modal { width: min(92vw, 520px); border-radius: 20px; }
.modal img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; background: var(--gold-soft); }
.modal__body { padding: 18px 22px 22px; }
.modal__body h2 { margin: 0 0 4px; }
.close { position: absolute; top: 10px; right: 10px; z-index: 2; width: 36px; height: 36px; border-radius: 50%; border: 0; background: var(--surface); box-shadow: var(--shadow); }
.qty-row { display: flex; gap: 12px; align-items: center; margin: 12px 0; }
.qty-row select { padding: 6px 10px; border-radius: 8px; border: 1.5px solid var(--line); background: var(--surface); }
.drawer { margin: 0 0 0 auto; height: 100dvh; max-height: 100dvh; width: min(420px, 100vw); display: flex; flex-direction: column; }
.drawer:not([open]) { display: none; }
.drawer[open] { animation: slide .25s ease-out; }
@keyframes slide { from { transform: translateX(100%); } }
.drawer__head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.drawer__head h2 { margin: 0; }
.drawer__head .close { position: static; box-shadow: none; }
.cart-list { list-style: none; margin: 0; padding: 0 18px; overflow: auto; flex: 1; }
.cart-item { display: grid; grid-template-columns: 56px 1fr auto; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.cart-item img { width: 56px; height: 56px; border-radius: 10px; object-fit: cover; }
.cart-item__name { font-weight: 700; color: var(--ink); }
.stepper { display: inline-flex; align-items: center; border: 1.5px solid var(--line); border-radius: 99px; }
.stepper button { border: 0; background: none; width: 30px; height: 30px; font-size: 1.1rem; }
.stepper span { min-width: 54px; text-align: center; font-variant-numeric: tabular-nums; }
.remove { border: 0; background: none; color: var(--bad); font-size: .85rem; text-decoration: underline; }
.empty { text-align: center; padding: 30px 18px; flex: 1; }
.totals { padding: 14px 18px 18px; border-top: 1px solid var(--line); display: grid; gap: 6px; }
.totals div { display: flex; justify-content: space-between; }
.totals .grand { font-weight: 800; font-size: 1.15rem; color: var(--ink); }
.hint { margin: 0; font-size: .85rem; color: var(--ok); }

/* checkout form */
.field { display: grid; gap: 4px; margin-bottom: 10px; border: 0; padding: 0; }
.field > label, legend { font-weight: 700; color: var(--ink); }
.field input:not([type="radio"]), .field textarea { padding: 10px 12px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--bg); }
.field [aria-invalid="true"] { border-color: var(--bad); }
.err { color: var(--bad); font-size: .85rem; margin: 0; min-height: 1em; }
.success { text-align: center; padding: 10px 0; }
.success .big { font-size: 3rem; margin: 0; }
.success table { width: 100%; border-collapse: collapse; margin: 12px 0; text-align: left; }
.success td { padding: 4px 0; border-bottom: 1px solid var(--line); }
.success td:last-child { text-align: right; }

/* toast + footer */
.toast { position: fixed; left: 50%; bottom: 20px; transform: translate(-50%, 160%); background: var(--ink); color: var(--bg); padding: 12px 18px; border-radius: 12px; transition: transform .3s ease; z-index: 50; max-width: calc(100vw - 24px); }
.toast.show { transform: translate(-50%, 0); }
.site-footer { text-align: center; padding: 24px 12px; border-top: 1px solid var(--line); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }