/* =========================================================
   ShopEasy — Enhanced UI
   No product images required: product visuals use emoji/CSS.
   Existing app.js + e-commerce.js remain compatible.
   ========================================================= */

:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-2: #f1f4fb;
  --text: #171b2e;
  --text-muted: #70778b;
  --border: #e6e8ef;
  --primary: #2f66f5;
  --primary-dark: #2453d3;
  --primary-light: #eaf0ff;
  --accent: #8b6cf6;
  --danger: #dc2626;
  --success: #16a34a;
  --shadow: 0 8px 25px rgba(31, 45, 80, 0.08);
  --shadow-lg: 0 18px 50px rgba(31, 45, 80, 0.14);
  --radius: 18px;
}

[data-theme="dark"] {
  --bg: #0e1220;
  --surface: #171c2d;
  --surface-2: #20263a;
  --text: #f5f7ff;
  --text-muted: #aab1c5;
  --border: #2b3248;
  --primary: #5d87ff;
  --primary-dark: #456fe2;
  --primary-light: #202b4a;
  --shadow: 0 8px 25px rgba(0,0,0,.28);
  --shadow-lg: 0 18px 50px rgba(0,0,0,.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: Inter, "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background .25s ease, color .25s ease;
}

a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }

main, .benefits, .nav-inner, .hero-inner, .footer-inner, .footer-bottom {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

/* ================= NAVBAR ================= */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.88);
  border-bottom: 1px solid rgba(230,232,239,.85);
  backdrop-filter: blur(14px);
}

[data-theme="dark"] .navbar {
  background: rgba(23,28,45,.88);
  border-color: var(--border);
}

.nav-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -.5px;
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-size: 17px;
  box-shadow: 0 7px 18px rgba(47,102,245,.25);
}

.brand-accent { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 14px;
}

.nav-links a {
  padding: 9px 12px;
  color: var(--text-muted);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 600;
  transition: .2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 7px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: .2s ease;
}

.icon-btn:hover { background: var(--surface-2); }

.nav-auth {
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  transition: .2s ease;
}

.login-link {
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface);
}

.login-link:hover { border-color: var(--primary); color: var(--primary); }

.signup-link {
  color: white;
  background: var(--primary);
  border: 1px solid var(--primary);
}

.signup-link:hover { background: var(--primary-dark); }

.cart-button { font-size: 19px; }

.cart-badge {
  position: absolute;
  top: 1px;
  right: 0;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 99px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  font-size: 10px;
  font-weight: 800;
  border: 2px solid var(--surface);
}

.hamburger {
  display: none;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 24px;
}

/* ================= HERO ================= */

.hero {
  background:
    radial-gradient(circle at 80% 25%, rgba(139,108,246,.20), transparent 28%),
    radial-gradient(circle at 15% 90%, rgba(47,102,245,.14), transparent 28%),
    linear-gradient(135deg, #eef3ff 0%, #f8f9ff 55%, #f4f1ff 100%);
  overflow: hidden;
}

[data-theme="dark"] .hero {
  background:
    radial-gradient(circle at 80% 25%, rgba(139,108,246,.22), transparent 28%),
    linear-gradient(135deg, #171f38, #121729);
}

.hero-inner {
  min-height: 500px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 30px;
  padding: 70px 0;
}

.hero-copy { max-width: 620px; }

.eyebrow,
.section-kicker,
.promo-kicker,
.drawer-kicker {
  font-size: 11px;
  letter-spacing: 1.4px;
  font-weight: 800;
  color: var(--primary);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 15px;
}

.eyebrow span {
  width: 25px;
  height: 3px;
  border-radius: 5px;
  background: var(--primary);
}

.hero h1 {
  font-size: clamp(42px, 5.4vw, 70px);
  line-height: .99;
  letter-spacing: -3.5px;
  margin-bottom: 20px;
}

.hero h1 span {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy > p {
  color: var(--text-muted);
  max-width: 540px;
  line-height: 1.75;
  font-size: 15px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 45px;
  padding: 0 19px;
  border-radius: 11px;
  font-size: 13px;
  font-weight: 700;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  color: white;
  background: var(--primary);
  box-shadow: 0 10px 24px rgba(47,102,245,.22);
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 26px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
}

.trust-row div {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-row span {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #dff8e7;
  color: var(--success);
  font-size: 10px;
}

.hero-art {
  min-height: 360px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.art-circle {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: linear-gradient(145deg, #dfe8ff, #eee7ff);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.7), 0 30px 60px rgba(74,83,130,.12);
}

[data-theme="dark"] .art-circle {
  background: linear-gradient(145deg, #29395e, #3b315d);
}

.shopping-bag {
  position: absolute;
  z-index: 2;
  width: 150px;
  height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 92px;
  filter: drop-shadow(0 20px 25px rgba(38,54,100,.18));
  transform: rotate(-4deg);
}

.floating-card {
  position: absolute;
  z-index: 3;
  width: 88px;
  height: 88px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(255,255,255,.9);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.card-one { left: 12%; top: 18%; transform: rotate(-10deg); }
.card-two { right: 9%; bottom: 16%; transform: rotate(10deg); }

.art-glow {
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(47,102,245,.15);
  filter: blur(35px);
}

/* ================= BENEFITS ================= */

.benefits {
  transform: translateY(-1px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 17px;
  box-shadow: var(--shadow);
  margin-top: -24px;
  position: relative;
  z-index: 5;
}

.benefit {
  min-height: 90px;
  padding: 17px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-right: 1px solid var(--border);
}

.benefit:last-child { border-right: 0; }

.benefit-icon {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  flex-shrink: 0;
}

.benefit strong {
  display: block;
  font-size: 12px;
  margin-bottom: 3px;
}

.benefit span {
  display: block;
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.4;
}

/* ================= SECTIONS ================= */

.section {
  padding: 78px 0 0;
}

.section-heading {
  margin-bottom: 26px;
}

.section-heading.centered { text-align: center; }

.section-heading h2 {
  font-size: clamp(27px, 3vw, 36px);
  letter-spacing: -1.2px;
  margin: 5px 0 7px;
}

.section-heading > div > p:last-child {
  color: var(--text-muted);
  font-size: 13px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.category-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 17px;
  border-radius: 15px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: 0 4px 18px rgba(31,45,80,.04);
  transition: .2s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  border-color: rgba(47,102,245,.35);
  box-shadow: var(--shadow);
}

.category-icon {
  width: 51px;
  height: 51px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  font-size: 25px;
}

.category-icon.fashion { background: #eaf0ff; }
.category-icon.electronics { background: #f0eaff; }
.category-icon.accessories { background: #fff1e5; }
.category-icon.all { background: #e7f8ef; }

.category-card h3 { font-size: 13px; margin-bottom: 3px; }
.category-card p { color: var(--text-muted); font-size: 10px; }

.category-arrow {
  margin-left: auto;
  color: var(--primary);
  font-size: 17px;
}

/* ================= PRODUCTS ================= */

.products-section { padding-bottom: 72px; }

.products-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.filters {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
}

.search-wrap {
  position: relative;
}

.search-wrap > span {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 18px;
}

.search-box,
.category-select {
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  outline: none;
  font-size: 12px;
  transition: .2s ease;
}

.search-box {
  width: 235px;
  padding: 0 13px 0 35px;
}

.category-select {
  padding: 0 34px 0 12px;
  cursor: pointer;
}

.search-box:focus,
.category-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

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

.product-card {
  position: relative;
  padding: 10px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 4px 18px rgba(31,45,80,.045);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(47,102,245,.24);
}

.product-image {
  min-height: 175px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--surface-2), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 68px;
  margin-bottom: 13px;
}

.product-card h3 {
  padding: 0 5px;
  font-size: 14px;
  margin-bottom: 8px;
}

.product-price {
  padding: 0 5px;
  color: var(--primary);
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 11px;
}

.product-card > button {
  width: 100%;
  border: 0;
  min-height: 38px;
  border-radius: 9px;
  background: var(--primary);
  color: white;
  font-size: 12px;
  font-weight: 700;
  transition: .2s ease;
}

.product-card > button:hover {
  background: var(--primary-dark);
}

.empty-state {
  grid-column: 1 / -1;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--border);
  border-radius: 15px;
  color: var(--text-muted);
  background: var(--surface);
}

/* ================= PROMO ================= */

.promo {
  margin: 0 0 80px;
  padding: 36px 42px;
  min-height: 220px;
  border-radius: 22px;
  position: relative;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 80% 20%, rgba(139,108,246,.45), transparent 30%),
    linear-gradient(115deg, #1a2340, #2f66f5);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.promo-kicker {
  color: #bfcfff;
  margin-bottom: 9px;
}

.promo h2 {
  font-size: 29px;
  letter-spacing: -1px;
  margin-bottom: 7px;
}

.promo > div:first-child > p:last-of-type {
  color: rgba(255,255,255,.7);
  font-size: 12px;
}

.promo-btn {
  margin-top: 18px;
  background: white;
  color: var(--primary);
}

.promo-btn:hover { background: #edf2ff; }

.promo-art {
  width: 270px;
  height: 160px;
  position: relative;
}

.promo-art span {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: rgba(255,255,255,.13);
  border: 1px solid rgba(255,255,255,.2);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 40px rgba(0,0,0,.12);
}

.promo-art span:nth-child(1) {
  width: 82px; height: 82px; right: 20px; top: 8px; font-size: 37px; transform: rotate(8deg);
}
.promo-art span:nth-child(2) {
  width: 62px; height: 62px; left: 40px; top: 4px; font-size: 27px;
}
.promo-art span:nth-child(3) {
  width: 100px; height: 80px; left: 82px; bottom: 0; font-size: 43px; transform: rotate(-7deg);
}

/* ================= FOOTER ================= */

footer {
  background: #12182a;
  color: rgba(255,255,255,.68);
}

.footer-inner {
  padding: 55px 0 38px;
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
}

.footer-logo { color: white; margin-bottom: 13px; }

.footer-brand > p {
  font-size: 11px;
  max-width: 190px;
  line-height: 1.7;
}

.footer-col h4 {
  color: white;
  font-size: 12px;
  margin-bottom: 13px;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,.62);
  font-size: 11px;
  margin-bottom: 9px;
  transition: .2s ease;
}

.footer-col a:hover { color: white; }

.footer-bottom {
  padding: 17px 0;
  border-top: 1px solid rgba(255,255,255,.09);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 10px;
}

/* ================= CART DRAWER ================= */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(12,17,31,.45);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: .25s ease;
  backdrop-filter: blur(2px);
}

.overlay.open {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(390px, 92vw);
  background: var(--surface);
  z-index: 201;
  transform: translateX(100%);
  transition: transform .28s ease;
  display: flex;
  flex-direction: column;
  box-shadow: -18px 0 55px rgba(0,0,0,.16);
}

.cart-drawer.open { transform: translateX(0); }

.cart-header {
  padding: 21px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.cart-header h3 {
  font-size: 18px;
  margin-top: 2px;
}

.drawer-kicker { font-size: 9px; }

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.cart-item-emoji {
  width: 47px;
  height: 47px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--surface-2);
  font-size: 25px;
}

.cart-item-info { flex: 1; min-width: 0; }

.cart-item-info h4 {
  font-size: 12px;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cart-item-info span {
  color: var(--text-muted);
  font-size: 11px;
}

.qty-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.qty-controls button {
  width: 25px;
  height: 25px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface-2);
  color: var(--text);
}

.qty-controls button:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.remove-btn {
  border: 0;
  background: transparent;
  color: var(--danger);
  font-size: 12px;
  padding: 4px;
}

.cart-footer {
  padding: 18px 22px 22px;
  border-top: 1px solid var(--border);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-weight: 800;
  margin-bottom: 13px;
  font-size: 16px;
}

.checkout-btn {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: white;
  font-size: 13px;
  font-weight: 700;
}

.checkout-btn:hover { background: var(--primary-dark); }

/* ================= TOAST ================= */

.toast-container {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.toast {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  padding: 12px 16px;
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  font-size: 12px;
  min-width: 220px;
  animation: slideIn .25s ease;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ================= RESPONSIVE ================= */

@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 55px 0 70px;
  }

  .hero-copy { text-align: center; margin: 0 auto; }
  .eyebrow, .hero-actions, .trust-row { justify-content: center; }
  .hero-copy > p { margin-inline: auto; }
  .hero-art { min-height: 290px; }

  .benefits { grid-template-columns: repeat(2, 1fr); }
  .benefit:nth-child(2) { border-right: 0; }
  .benefit:nth-child(-n+2) { border-bottom: 1px solid var(--border); }

  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }

  .products-heading { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 720px) {
  main, .benefits, .nav-inner, .hero-inner, .footer-inner, .footer-bottom {
    width: min(100% - 28px, 600px);
  }

  .nav-inner { height: 64px; }

  .nav-links {
    position: absolute;
    top: 64px;
    left: 14px;
    right: 14px;
    padding: 12px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px 12px; }

  .nav-auth { display: none; }
  .hamburger { display: inline-flex; align-items: center; justify-content: center; }

  .hero-inner { padding: 48px 0 55px; }
  .hero h1 { font-size: 45px; letter-spacing: -2.4px; }
  .hero-art { min-height: 250px; transform: scale(.85); }

  .benefits { margin-top: 0; grid-template-columns: 1fr; }
  .benefit, .benefit:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--border); }
  .benefit:last-child { border-bottom: 0; }

  .section { padding-top: 55px; }
  .category-grid, .product-grid { grid-template-columns: 1fr; }

  .filters { width: 100%; }
  .search-wrap { flex: 1; }
  .search-box { width: 100%; }
  .category-select { width: 100%; }

  .promo { padding: 28px 25px; margin-bottom: 55px; }
  .promo-art { display: none; }

  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }

  .toast-container { left: 14px; right: 14px; }
  .toast { min-width: 0; }
}

@media (max-width: 420px) {
  .hero h1 { font-size: 39px; }
  .hero-actions .btn { width: 100%; }
  .trust-row { gap: 10px 14px; }
}