/* =========================================================
   Kiara Shop — page styles (mobile-first)
   Depends on colors_and_type.css (brand tokens).
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; overflow-x: hidden; }
img { max-width: 100%; display: block; }
button { font-family: var(--font-sans); cursor: pointer; }
input, select, textarea { font-family: var(--font-sans); }

/* ---------- Language toggle visibility ---------- */
html[data-lang="zh"] .l-en { display: none !important; }
html[data-lang="en"] .l-zh { display: none !important; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 var(--container-pad); }

/* =========================================================
   Header
   ========================================================= */
.shop-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(253, 248, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.shop-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4); padding: var(--space-3) 0; min-height: 56px;
}
.shop-logo { display: flex; align-items: center; gap: var(--space-2); }
.shop-logo img { height: 38px; width: auto; }
.shop-header-right { display: flex; align-items: center; gap: var(--space-4); }

.klang {
  display: inline-flex; border: 1px solid var(--border-purple);
  border-radius: var(--radius-pill); overflow: hidden; background: var(--bg-card);
}
.klang button {
  border: 0; background: transparent; color: var(--fg-3);
  font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.08em;
  padding: 5px 12px; transition: all var(--dur-fast) var(--ease-out);
}
.klang button.is-active { background: var(--kiara-purple); color: var(--kiara-on-dark); }

.header-cart { position: relative; display: inline-flex; align-items: center; color: var(--fg-1); font-size: 1.25rem; text-decoration: none; padding-right: 8px; }
#header-cart-count {
  position: absolute; top: -6px; right: 0;
  background: var(--kiara-magenta); color: var(--kiara-cream);
  font-size: 0.65rem; font-weight: 700; line-height: 1;
  min-width: 17px; height: 17px; border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: center; padding: 0 4px;
}
#header-cart-count.is-empty { display: none; }

/* =========================================================
   Hero (index)
   ========================================================= */
.shop-hero {
  background: var(--kiara-grad-hero);
  color: var(--kiara-on-dark);
  padding: var(--space-10) 0 var(--space-12);
  position: relative; overflow: hidden;
}
.shop-hero::after {
  content: ''; position: absolute; inset: auto -20% -55% -20%; height: 70%;
  background: radial-gradient(ellipse at center, rgba(253,248,245,0.18), transparent 70%);
  pointer-events: none;
}
.shop-hero-inner {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: var(--space-6); position: relative; z-index: 1;
}
.shop-hero .eyebrow { color: var(--kiara-light); }
.shop-hero h1 { color: var(--kiara-on-dark); font-size: var(--fs-display); line-height: var(--lh-tight); }
.shop-hero-sub { color: var(--kiara-on-dark-muted); font-size: var(--fs-body-lg); max-width: 34em; }
.hero-can {
  width: min(200px, 48vw); filter: drop-shadow(0 24px 48px rgba(0,0,0,0.35));
  transform: rotate(-3deg);
}
.hero-pillars {
  display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2);
}
.hero-pillar {
  background: var(--glass-regular); border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill); padding: 7px 16px;
  font-size: var(--fs-small); font-weight: 500; color: var(--kiara-on-dark);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  white-space: nowrap;
}

/* =========================================================
   Products (index)
   ========================================================= */
.shop-products { padding: var(--space-12) 0 calc(var(--space-16) + 96px); }
.shop-products .section-head { text-align: center; margin-bottom: var(--space-8); }
.product-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; }

.product-card {
  background: var(--kiara-grad-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-4);
  transition: box-shadow var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.product-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.product-card-media {
  display: flex; justify-content: center; align-items: flex-end; gap: 4px;
  padding: var(--space-4) 0 0; min-height: 150px;
}
.product-card-media img { height: 140px; width: auto; }
.product-card-media img + img { margin-left: -34px; opacity: 0.92; }
.product-card-media.is-case img { height: 120px; }
.product-card-media.is-case img + img { margin-left: -30px; }
.product-badge {
  align-self: flex-start;
  background: var(--kiara-light); color: var(--kiara-magenta);
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; border-radius: var(--radius-pill); padding: 4px 12px;
}
.product-title { font-size: var(--fs-h3); }
.product-desc { color: var(--fg-2); font-size: var(--fs-small); }
.product-price-row { display: flex; align-items: baseline; gap: var(--space-2); }
.product-price { font-size: 1.7rem; font-weight: 700; color: var(--kiara-purple); font-family: var(--font-display); }
.product-percan { color: var(--fg-3); font-size: var(--fs-small); }

.product-actions { display: flex; gap: var(--space-3); align-items: stretch; margin-top: auto; }
.qty-stepper {
  display: inline-flex; align-items: center; border: 1px solid var(--border-purple);
  border-radius: var(--radius-pill); background: var(--bg-card); overflow: hidden;
}
.qty-stepper button {
  border: 0; background: transparent; color: var(--kiara-purple);
  width: 40px; height: 44px; font-size: 1.15rem; font-weight: 600;
  transition: background var(--dur-fast);
}
.qty-stepper button:hover { background: var(--kiara-light); }
.qty-value { min-width: 28px; text-align: center; font-weight: 600; color: var(--fg-1); }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--cta-bg); color: var(--cta-fg);
  border: 0; border-radius: var(--radius-pill);
  font-size: var(--fs-body); font-weight: 600; letter-spacing: 0.02em;
  padding: 12px 24px; min-height: 44px;
  box-shadow: var(--shadow-cta);
  transition: background var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), transform var(--dur-fast);
  text-decoration: none;
}
.btn-primary:hover { background: var(--cta-bg-hover); color: var(--cta-fg-hover); box-shadow: var(--shadow-cta-hover); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.55; box-shadow: none; cursor: not-allowed; }
.btn-primary.is-added { background: var(--kiara-purple); }
.product-actions .btn-primary { flex: 1; }

.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--kiara-purple);
  border: 1.5px solid var(--kiara-purple); border-radius: var(--radius-pill);
  font-size: var(--fs-body); font-weight: 600; padding: 10px 22px; min-height: 44px;
  transition: all var(--dur-fast); text-decoration: none;
}
.btn-ghost:hover { background: var(--kiara-purple); color: var(--kiara-cream); }

/* Trust strip */
.trust-strip {
  display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3);
  margin-top: var(--space-10); color: var(--fg-3); font-size: var(--fs-small);
}
.trust-strip span { display: inline-flex; align-items: center; gap: 6px; }

/* =========================================================
   Sticky cart bar (index)
   ========================================================= */
.cartbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: var(--bg-card);
  border-top: 1px solid var(--border-soft);
  box-shadow: 0 -8px 32px rgba(58, 47, 134, 0.12);
  transition: transform var(--dur) var(--ease-out);
  padding-bottom: env(safe-area-inset-bottom);
}
.cartbar.is-hidden { transform: translateY(110%); pointer-events: none; }
.cartbar-inner { display: flex; flex-direction: column; }

.cartbar-panel {
  display: none; border-bottom: 1px solid var(--border-soft);
  padding: var(--space-3) var(--container-pad) var(--space-2);
  max-height: 40vh; overflow-y: auto;
}
.cartbar-panel.is-open { display: block; }
.cartline {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) 0; font-size: var(--fs-small);
}
.cartline-name { flex: 1; color: var(--fg-1); font-weight: 500; }
.cartline-controls { display: inline-flex; align-items: center; gap: 6px; }
.qty-btn {
  width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--border-purple); background: var(--bg-card);
  color: var(--kiara-purple); font-weight: 700; line-height: 1;
}
.qty-btn:hover { background: var(--kiara-light); }
.cartline-qty { min-width: 20px; text-align: center; font-weight: 600; }
.cartline-price { min-width: 72px; text-align: right; color: var(--fg-1); font-weight: 600; }
.cartline-remove {
  border: 0; background: transparent; color: var(--fg-3); font-size: 1.1rem;
  width: 30px; height: 30px; border-radius: 50%;
}
.cartline-remove:hover { color: var(--kiara-magenta); background: var(--kiara-light); }

.cartbar-main {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--container-pad);
}
.cartbar-summary {
  flex: 1; display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  background: transparent; border: 0; text-align: left; padding: 0;
}
.cartbar-line1 { display: flex; align-items: baseline; gap: var(--space-2); font-size: var(--fs-body); color: var(--fg-1); }
.cartbar-line1 strong { font-size: 1.15rem; font-family: var(--font-display); color: var(--kiara-purple); }
.cartbar-shipline { font-size: var(--fs-xs); color: var(--fg-3); display: flex; gap: var(--space-2); flex-wrap: wrap; }
#cartbar-shipping.is-free { color: var(--kiara-magenta); font-weight: 700; }
#cartbar-freehint { color: var(--kiara-magenta); }
#cartbar-freehint:not(.is-visible) { display: none; }
.cartbar-cta { white-space: nowrap; }

/* =========================================================
   Checkout
   ========================================================= */
.page-main { padding: var(--space-8) 0 var(--space-16); }
.page-title { margin-bottom: var(--space-6); }

.checkout-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; }

.card {
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-card); box-shadow: var(--shadow-card);
  padding: var(--space-6);
}
.card h2 { font-size: var(--fs-h3); margin-bottom: var(--space-4); }

.summary-line { display: flex; justify-content: space-between; gap: var(--space-3); padding: var(--space-2) 0; font-size: var(--fs-body); color: var(--fg-2); }
.summary-line .qty { color: var(--fg-3); }
.summary-sub { border-top: 1px solid var(--border-soft); margin-top: var(--space-2); padding-top: var(--space-3); }
.summary-total { font-weight: 700; color: var(--kiara-purple); font-size: var(--fs-body-lg); }
.summary-free { color: var(--kiara-magenta); font-weight: 700; }
.summary-note { font-size: var(--fs-xs); color: var(--fg-3); margin-top: var(--space-2); }

.form-grid { display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: var(--fs-small); font-weight: 600; color: var(--fg-1); }
.form-field label .req { color: var(--kiara-magenta); }
.form-field input, .form-field select {
  border: 1px solid var(--border-purple); border-radius: var(--radius-input);
  background: var(--bg-card); color: var(--fg-1);
  font-size: 16px; /* prevents iOS zoom */
  padding: 12px 14px; min-height: 46px; width: 100%;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.form-field input:focus, .form-field select:focus {
  outline: none; border-color: var(--kiara-magenta); box-shadow: var(--focus-ring);
}
.form-field input.is-invalid { border-color: #C0392B; }
.field-error { font-size: var(--fs-xs); color: #C0392B; display: none; }
.field-error.is-visible { display: block; }
.form-row-2 { display: grid; gap: var(--space-4); grid-template-columns: 1fr 1fr; }

.zip-warning {
  display: none; background: #FBEDED; border: 1px solid rgba(192, 57, 43, 0.25);
  color: #8E2A20; border-radius: var(--radius-input);
  padding: var(--space-3) var(--space-4); font-size: var(--fs-small); line-height: 1.5;
}
.zip-warning.is-visible { display: block; }

/* Invoice radios */
.invoice-options { display: flex; flex-direction: column; gap: var(--space-2); }
.invoice-option {
  border: 1px solid var(--border-purple); border-radius: var(--radius-input);
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.invoice-option:has(input:checked) { border-color: var(--kiara-magenta); background: rgba(240, 207, 221, 0.25); }
.invoice-option > label { display: flex; align-items: center; gap: 10px; font-size: var(--fs-body); color: var(--fg-1); cursor: pointer; }
.invoice-option input[type="radio"] { accent-color: var(--kiara-magenta); width: 18px; height: 18px; flex-shrink: 0; }
.invoice-extra { display: none; margin-top: var(--space-3); }
.invoice-option.is-active .invoice-extra { display: grid; gap: var(--space-3); }
.invoice-hint { font-size: var(--fs-xs); color: var(--fg-3); }

.checkout-submit-wrap { display: flex; flex-direction: column; gap: var(--space-3); }
.checkout-error {
  display: none; background: #FBEDED; border: 1px solid rgba(192, 57, 43, 0.25);
  color: #8E2A20; border-radius: var(--radius-input);
  padding: var(--space-3) var(--space-4); font-size: var(--fs-small);
}
.checkout-error.is-visible { display: block; }
.checkout-submit { width: 100%; font-size: var(--fs-body-lg); min-height: 52px; }
.checkout-secure { text-align: center; font-size: var(--fs-xs); color: var(--fg-3); }
.back-link { font-size: var(--fs-small); }

/* =========================================================
   Thanks page
   ========================================================= */
.thanks-card {
  max-width: 460px; margin: var(--space-10) auto; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-4);
}
.thanks-icon { font-size: 3rem; line-height: 1; }
.spinner {
  width: 42px; height: 42px; border-radius: 50%;
  border: 4px solid var(--kiara-light); border-top-color: var(--kiara-magenta);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.thanks-ordernum { font-family: var(--font-display); font-weight: 700; color: var(--kiara-purple); font-size: var(--fs-h3); }
.thanks-detail { color: var(--fg-2); font-size: var(--fs-body); }

/* =========================================================
   Policies
   ========================================================= */
.policy-section { padding: var(--space-8) 0 0; scroll-margin-top: 90px; }
.policy-section:last-of-type { padding-bottom: var(--space-8); }
.policy-section h2 { font-size: var(--fs-h2); margin-bottom: var(--space-2); }
.policy-updated { font-size: var(--fs-xs); color: var(--fg-3); margin-bottom: var(--space-4); }
.policy-section h3 { font-size: var(--fs-body-lg); margin: var(--space-5) 0 var(--space-2); }
.policy-section p, .policy-section li { font-size: var(--fs-body); color: var(--fg-2); line-height: var(--lh-relaxed); }
.policy-section ul { margin: var(--space-2) 0; padding-left: 1.3em; }
.policy-nav { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.policy-nav a {
  border: 1px solid var(--border-purple); border-radius: var(--radius-pill);
  padding: 6px 16px; font-size: var(--fs-small); color: var(--kiara-purple);
}
.policy-nav a:hover { background: var(--kiara-light); }
.policy-divider { border: 0; border-top: 1px solid var(--border-soft); margin: var(--space-8) 0 0; }

/* =========================================================
   Footer (every page)
   ========================================================= */
.shop-footer {
  background: var(--kiara-purple); color: var(--kiara-on-dark);
  padding: var(--space-10) 0 var(--space-8); margin-top: var(--space-8);
}
.shop-footer-inner { display: flex; flex-direction: column; gap: var(--space-5); }
.shop-footer .footer-logo img { height: 48px; filter: brightness(0) invert(1); opacity: 0.9; }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-4); font-size: var(--fs-small); }
.footer-links a { color: var(--kiara-on-dark-muted); }
.footer-links a:hover { color: var(--kiara-on-dark); }
.footer-company {
  font-size: var(--fs-xs); color: var(--kiara-on-dark-muted); line-height: 1.8;
}
.footer-company a { color: var(--kiara-on-dark-muted); text-decoration: underline; }
.footer-caffeine { font-size: var(--fs-xs); color: rgba(253, 248, 245, 0.45); }

/* =========================================================
   Desktop
   ========================================================= */
@media (min-width: 768px) {
  .product-grid { grid-template-columns: 1fr 1fr; max-width: 880px; margin: 0 auto; }
  .checkout-grid { grid-template-columns: 5fr 4fr; align-items: start; }
  .checkout-form-col { order: 1; }
  .checkout-summary-col { order: 2; position: sticky; top: 80px; }
  .shop-hero { padding: var(--space-16) 0; }
  .shop-hero-inner { flex-direction: row; text-align: left; justify-content: space-between; }
  .shop-hero-copy { max-width: 520px; display: flex; flex-direction: column; gap: var(--space-5); align-items: flex-start; }
  .hero-pillars { justify-content: flex-start; }
  .hero-can { width: 230px; }
  .cartbar-main { max-width: 1080px; margin: 0 auto; width: 100%; }
  .cartbar-panel { max-width: 1080px; margin: 0 auto; width: 100%; }
  .shop-footer-inner { flex-direction: row; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; }
  .footer-company { text-align: right; }
}