/* ================================================================
   chaihub.css — Shared design system for all ChaiHub pages
   Covers: variables, reset, nav, cart, toast, footer, buttons
================================================================ */

/* === VARIABLES === */
:root {
  --cream:#F5F0E8; --cream-dark:#EDE5D4;
  --ink:#1A1612; --ink-light:#3D3530; --ink-soft:#433933;
  --ink-deep:#14110E; --ink-warm:#2C1810; --ink-green:#1A2E1A;
  --ink-blue:#1E2830; --ink-gold:#2A1F0E;
  --gold:#B8955A; --gold-light:#D4AF7A; --gold-deep:#6F5430;
  --sage:#6B7C5E; --sage-deep:#394437;
  --rust:#8B4A2B; --rust-deep:#4C2617;
  --mist:#C8D4C0; --mist-deep:#657168;
  --himalaya:#5B6E8C; --himalaya-deep:#2B3D52;
  --border:rgba(26,22,18,0.12);
  --shadow:0 8px 24px rgba(26,22,18,0.08);
  --shadow-gold:0 4px 12px rgba(184,149,90,0.3);
  --serif:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --sans:'Jost','Segoe UI',Arial,sans-serif;
  --transition:0.25s ease;
}

/* === RESET === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{
  background:var(--cream);color:var(--ink);
  font-family:var(--sans);font-weight:300;line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
  touch-action:manipulation;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
img{max-width:100%;display:block;height:auto;}
button{font-family:inherit;touch-action:manipulation;cursor:pointer;}
a{color:inherit;text-decoration:none;}

/* === NAV === */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 5vw;height:72px;
  background:rgba(245,240,232,0.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  transition:box-shadow 0.3s;
}
nav.scrolled{box-shadow:0 4px 32px rgba(26,22,18,0.08);}
.nav-logo{
  font-family:var(--serif);font-size:1.5rem;font-weight:600;
  letter-spacing:0.04em;color:var(--ink);flex-shrink:0;
}
.nav-logo span{color:var(--gold);}
.nav-links{display:flex;gap:2rem;list-style:none;}
.nav-links a{
  font-size:0.78rem;letter-spacing:0.12em;text-transform:uppercase;
  color:var(--ink-light);transition:color var(--transition);position:relative;
}
.nav-links a::after{
  content:'';position:absolute;bottom:-4px;left:0;
  width:0;height:1px;background:var(--gold);transition:width 0.3s;
}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--gold);}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{width:100%;}
.nav-actions{display:flex;gap:0.75rem;align-items:center;}
.nav-icon-btn{
  background:none;border:none;padding:8px;
  color:var(--ink-light);display:flex;align-items:center;
  transition:color var(--transition);border-radius:4px;
}
.nav-icon-btn:hover,.nav-icon-btn:focus{color:var(--gold);outline:2px solid var(--gold);outline-offset:2px;}
.cart-btn{
  position:relative;background:var(--ink);color:var(--cream);
  border:none;width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  transition:background var(--transition),transform 0.2s;flex-shrink:0;
}
.cart-btn:hover{background:var(--gold);transform:scale(1.06);box-shadow:0 0 0 3px rgba(184,149,90,0.3);}
.cart-count{
  position:absolute;top:-4px;right:-4px;width:18px;height:18px;
  border-radius:50%;background:var(--gold);color:var(--cream);
  font-size:0.6rem;font-weight:500;display:none;
  align-items:center;justify-content:center;
}
.cart-count.visible{display:flex;}
.hamburger{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;padding:6px;
}
.hamburger span{display:block;width:22px;height:1.5px;background:var(--ink);transition:all 0.3s;}

/* === SEARCH BAR === */
.search-bar{
  position:fixed;top:72px;left:0;right:0;z-index:99;
  background:var(--cream);border-bottom:1px solid var(--border);
  padding:0 5vw;height:0;overflow:hidden;
  transition:height 0.3s ease;
  display:flex;align-items:center;gap:1rem;
}
.search-bar.open{height:64px;}
.search-input{
  flex:1;border:none;background:none;outline:none;
  font-family:var(--sans);font-size:1rem;color:var(--ink);
  font-weight:300;max-width:600px;
}
.search-input::placeholder{color:var(--ink-light);opacity:0.5;}
.search-close-btn{
  background:none;border:none;
  color:var(--ink-light);font-size:1.2rem;padding:8px;
  transition:color var(--transition);
}
.search-close-btn:hover{color:var(--rust);}
.search-hint{font-size:0.78rem;color:var(--ink-light);letter-spacing:0.06em;white-space:nowrap;}

/* === MOBILE NAV === */
.mobile-nav{
  position:fixed;inset:0;z-index:99;
  background:var(--cream);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:2rem;
  transform:translateX(-100%);transition:transform 0.35s ease;
}
.mobile-nav.open{transform:translateX(0);}
.mobile-nav a{
  font-family:var(--serif);font-size:2.2rem;font-weight:300;
  color:var(--ink);transition:color var(--transition);padding:0.5rem;
}
.mobile-nav a:hover{color:var(--gold);}
.mobile-close{
  position:absolute;top:1.5rem;right:1.5rem;
  background:none;border:none;font-size:1.5rem;
  color:var(--ink);padding:4px;
}

/* === BUTTONS === */
.btn-primary{
  background:var(--ink);color:var(--cream);
  padding:14px 32px;font-family:var(--sans);font-size:0.78rem;
  letter-spacing:0.14em;text-transform:uppercase;
  border:1px solid var(--ink);
  display:inline-flex;align-items:center;gap:10px;
  transition:background var(--transition),border-color var(--transition),color var(--transition),transform 0.2s;
}
.btn-primary:hover,.btn-primary:focus{background:var(--gold);border-color:var(--gold);transform:translateY(-2px);outline:none;box-shadow:var(--shadow-gold);}
.btn-primary svg{transition:transform var(--transition);}
.btn-primary:hover svg{transform:translateX(4px);}
.btn-secondary{
  background:transparent;color:var(--ink);
  padding:14px 32px;font-family:var(--sans);font-size:0.78rem;
  letter-spacing:0.14em;text-transform:uppercase;
  border:1px solid var(--border);
  display:inline-flex;align-items:center;gap:10px;
  transition:border-color var(--transition),color var(--transition),transform 0.2s;
}
.btn-secondary:hover,.btn-secondary:focus{border-color:var(--gold);color:var(--gold);transform:translateY(-2px);outline:none;}

/* === SECTION COMPONENTS === */
.section-tag{
  font-size:0.7rem;letter-spacing:0.22em;text-transform:uppercase;
  color:var(--gold);display:flex;align-items:center;gap:12px;margin-bottom:1.2rem;
}
.section-tag::before{content:'';display:block;width:28px;height:1px;background:var(--gold);flex-shrink:0;}
.section-title{
  font-family:var(--serif);font-size:clamp(2rem,3.5vw,3.5rem);
  font-weight:300;line-height:1.1;color:var(--ink);margin-bottom:1.5rem;
}
.section-title em{font-style:italic;color:var(--gold);}

/* === FILTER / PILL BUTTONS === */
.filter-btn{
  background:none;border:1px solid var(--border);
  padding:6px 16px;font-family:var(--sans);font-size:0.72rem;
  letter-spacing:0.08em;text-transform:uppercase;
  color:var(--ink-light);
  transition:background 0.2s,color 0.2s,border-color 0.2s,transform 0.1s;
  position:relative;
}
.filter-btn:hover,.filter-btn:focus{transform:translateY(-1px);outline:none;border-color:var(--gold);}
.filter-btn.active{background:var(--ink);color:var(--cream);border-color:var(--ink);}
.filter-btn .btn-count{
  display:inline-block;margin-left:5px;font-size:0.6rem;
  opacity:0.7;padding:0 4px;border-radius:2px;
}
.filter-btn.active .btn-count{background:rgba(255,255,255,0.15);}
.filter-btn:not(.active) .btn-count{background:rgba(0,0,0,0.06);color:var(--gold);}
.sub-pill{
  background:none;border:1px solid var(--border);
  padding:4px 12px;font-family:var(--sans);font-size:0.68rem;
  letter-spacing:0.08em;text-transform:uppercase;
  color:var(--ink-light);transition:all 0.2s;
}
.sub-pill:hover,.sub-pill:focus{border-color:var(--gold);outline:none;}
.sub-pill.active{background:var(--gold);color:var(--ink);border-color:var(--gold);}

/* === PRODUCT CARD === */
.product-card{
  background:var(--cream);
  transition:background 0.2s,transform 0.2s;
  position:relative;overflow:hidden;
  border:none;text-align:left;width:100%;
}
.product-card:hover,.product-card:focus-within{
  background:var(--cream-dark);transform:translateY(-4px);box-shadow:var(--shadow);
}
.product-img{
  aspect-ratio:4/5;display:flex;align-items:center;justify-content:center;
  font-size:4rem;background:linear-gradient(180deg,#fff 0%,var(--cream-dark) 100%);
  position:relative;overflow:hidden;transition:background 0.25s;padding:0.75rem;
}
.product-card:hover .product-img{background:linear-gradient(180deg,#fff 0%,var(--mist) 100%);}
.product-photo{
  width:100%;height:100%;object-fit:contain;object-position:center;
  display:block;transition:transform 0.35s ease;
}
.product-card:hover .product-photo{transform:scale(1.04);}
.product-badge{
  position:absolute;top:12px;left:12px;
  font-size:0.62rem;letter-spacing:0.1em;text-transform:uppercase;
  padding:4px 10px;z-index:1;font-family:var(--sans);
}
.badge-new{background:var(--gold);color:var(--ink);}
.badge-sale{background:var(--rust);color:var(--cream);}
.badge-popular{background:var(--sage);color:var(--cream);}
.badge-rare{background:var(--himalaya);color:var(--cream);}
.product-quick-add{
  position:absolute;bottom:0;left:0;right:0;
  background:var(--ink);color:var(--cream);
  padding:10px;font-family:var(--sans);font-size:0.7rem;
  letter-spacing:0.1em;text-transform:uppercase;text-align:center;
  transform:translateY(100%);transition:transform 0.25s ease;
  pointer-events:none;
}
.product-card:hover .product-quick-add{transform:translateY(0);}
.product-info{padding:1.25rem 1.2rem;}
.product-origin{font-size:0.65rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--gold);margin-bottom:4px;}
.product-type{font-size:0.62rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--ink-light);margin-bottom:6px;}
.product-name{font-family:var(--serif);font-size:1.1rem;font-weight:400;color:var(--ink);margin-bottom:6px;line-height:1.3;}
.product-sub{font-size:0.76rem;color:var(--ink-light);margin-bottom:8px;}
.product-weight{font-size:0.76rem;color:var(--ink-light);margin-bottom:8px;}
.variant-pills{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:10px;}
.vpill{
  background:none;border:1px solid var(--border);
  padding:3px 10px;font-size:0.65rem;letter-spacing:0.06em;text-transform:uppercase;
  color:var(--ink-light);transition:all 0.2s;
}
.vpill.active,.vpill:hover{background:var(--ink);color:var(--cream);border-color:var(--ink);}
.product-footer{display:flex;align-items:center;justify-content:space-between;}
.product-price{font-family:var(--serif);font-size:1.2rem;color:var(--ink);}
.product-old-price{font-size:0.82rem;color:var(--ink-light);text-decoration:line-through;margin-right:6px;}
.product-rating{display:flex;gap:2px;font-size:0.72rem;color:var(--gold);}
.no-results{
  grid-column:1/-1;padding:4rem;text-align:center;
  color:var(--ink-light);font-family:var(--serif);font-size:1.2rem;font-style:italic;
}

/* === CART === */
.cart-overlay{
  position:fixed;inset:0;z-index:200;
  background:rgba(26,22,18,0.5);opacity:0;
  pointer-events:none;transition:opacity 0.3s;
}
.cart-overlay.open{opacity:1;pointer-events:all;}
.cart-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:201;
  width:400px;max-width:95vw;background:var(--cream);
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 0.35s ease;
  box-shadow:-8px 0 40px rgba(26,22,18,0.15);
}
.cart-drawer.open{transform:translateX(0);}
.cart-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:1.5rem;border-bottom:1px solid var(--border);flex-shrink:0;
}
.cart-title{font-family:var(--serif);font-size:1.4rem;font-weight:400;}
.cart-close{
  background:none;border:none;font-size:1.2rem;
  color:var(--ink-light);padding:4px;transition:color 0.2s;
}
.cart-close:hover{color:var(--rust);}
.cart-items{flex:1;overflow-y:auto;padding:1.5rem;}
.cart-empty{
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;height:100%;gap:1rem;
  color:var(--ink-light);font-size:0.9rem;text-align:center;
}
.cart-empty-icon{font-size:3rem;opacity:0.3;}
.cart-item{display:flex;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--border);}
.cart-item-img{
  width:72px;height:72px;background:var(--cream-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:2rem;flex-shrink:0;overflow:hidden;
}
.cart-item-img img{width:100%;height:100%;object-fit:cover;}
.cart-item-info{flex:1;min-width:0;}
.cart-item-name{font-family:var(--serif);font-size:1rem;font-weight:400;color:var(--ink);margin-bottom:4px;}
.cart-item-sub{font-size:0.76rem;color:var(--ink-light);margin-bottom:8px;}
.cart-item-row{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.cart-item-price{font-family:var(--serif);font-size:1.05rem;color:var(--ink);}
.qty-control{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.qty-btn{
  width:26px;height:26px;background:none;border:1px solid var(--border);
  font-size:1rem;display:flex;align-items:center;justify-content:center;
  transition:background 0.2s,color 0.2s,border-color 0.2s;
}
.qty-btn:hover{background:var(--ink);color:var(--cream);border-color:var(--ink);}
.qty-num{font-size:0.9rem;min-width:20px;text-align:center;}
.cart-item-remove{
  background:none;border:none;font-size:0.7rem;color:var(--ink-light);
  letter-spacing:0.08em;text-transform:uppercase;
  transition:color 0.2s;margin-top:8px;display:block;padding:0;
}
.cart-item-remove:hover{color:var(--rust);}
.cart-footer{padding:1.5rem;border-top:1px solid var(--border);flex-shrink:0;}
.cart-subtotal{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem;}
.cart-subtotal-label{font-size:0.8rem;letter-spacing:0.08em;text-transform:uppercase;color:var(--ink-light);}
.cart-subtotal-price{font-family:var(--serif);font-size:1.6rem;}
.btn-checkout{
  width:100%;background:var(--ink);color:var(--cream);border:none;
  padding:16px;font-family:var(--sans);font-size:0.78rem;
  letter-spacing:0.14em;text-transform:uppercase;transition:background 0.2s;
  display:block;text-align:center;
}
.btn-checkout:hover{background:var(--gold);}
.cart-note{font-size:0.7rem;color:var(--ink-light);text-align:center;margin-top:0.8rem;line-height:1.5;}

/* === TOAST === */
.toast{
  position:fixed;bottom:5rem;left:50%;
  transform:translateX(-50%) translateY(120px);
  background:var(--ink);color:var(--cream);
  padding:12px 24px;font-size:0.82rem;letter-spacing:0.04em;
  z-index:400;transition:transform 0.35s ease;
  display:flex;align-items:center;gap:10px;
  white-space:nowrap;max-width:90vw;pointer-events:none;
  box-shadow:0 8px 32px rgba(26,22,18,0.25);
}
.toast.show{transform:translateX(-50%) translateY(0);}
.toast-icon{color:var(--gold);}

/* === PAGE LOADER === */
.page-loader{
  position:fixed;inset:0;background:var(--cream);z-index:1000;
  display:flex;align-items:center;justify-content:center;
  transition:opacity 0.5s ease,visibility 0.5s;
}
.page-loader.hidden{opacity:0;visibility:hidden;}
.loader-spinner{
  width:40px;height:40px;border:2px solid var(--border);
  border-top-color:var(--gold);border-radius:50%;
  animation:spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(28px);}
  to{opacity:1;transform:translateY(0);}
}
.fade-up{opacity:0;animation:fadeUp 0.7s ease forwards;}
.fade-up.d1{animation-delay:0.1s;}.fade-up.d2{animation-delay:0.25s;}
.fade-up.d3{animation-delay:0.4s;}.fade-up.d4{animation-delay:0.55s;}

/* === BACK TO TOP === */
.back-to-top{
  position:fixed;bottom:2rem;right:2rem;z-index:50;
  width:44px;height:44px;background:var(--ink);color:var(--cream);
  border:none;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
  transition:opacity 0.3s,background 0.2s,transform 0.2s;
  box-shadow:0 4px 16px rgba(26,22,18,0.2);
}
.back-to-top.visible{opacity:1;pointer-events:all;}
.back-to-top:hover{background:var(--gold);transform:translateY(-3px);}

/* === FOOTER === */
footer{
  background:var(--ink);color:rgba(245,240,232,0.6);
  padding:4rem 8vw 2rem;border-top:1px solid rgba(245,240,232,0.08);
}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem;}
.footer-brand .nav-logo{display:block;margin-bottom:1.2rem;color:var(--cream);}
.footer-brand p{font-size:0.85rem;line-height:1.7;max-width:260px;}
.footer-col h4{font-size:0.7rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--cream);margin-bottom:1.2rem;}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:0.6rem;}
.footer-col ul a{font-size:0.85rem;color:rgba(245,240,232,0.55);transition:color 0.2s;}
.footer-col ul a:hover{color:var(--gold);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:1rem;
  padding-top:2rem;border-top:1px solid rgba(245,240,232,0.08);font-size:0.78rem;
}
.payment-icons{display:flex;gap:8px;flex-wrap:wrap;}
.pay-icon{
  background:rgba(245,240,232,0.08);border:1px solid rgba(245,240,232,0.15);
  padding:4px 10px;font-size:0.7rem;color:rgba(245,240,232,0.6);border-radius:3px;
}

/* === NEWSLETTER (shared in footer area) === */
.newsletter{
  background:var(--ink);color:var(--cream);
  padding:5rem 8vw;display:flex;align-items:center;
  justify-content:space-between;gap:3rem;flex-wrap:wrap;
}
.newsletter-left{max-width:480px;}
.newsletter-title{font-family:var(--serif);font-size:2.2rem;font-weight:300;line-height:1.2;margin-bottom:0.8rem;color:var(--cream);}
.newsletter-subtitle{font-size:0.9rem;line-height:1.7;color:rgba(245,240,232,0.6);}
.newsletter-form{
  display:flex;border:1px solid rgba(245,240,232,0.2);
  overflow:hidden;min-width:340px;transition:border-color 0.3s;
}
.newsletter-form.success{border-color:var(--sage);}
.newsletter-form.error{border-color:var(--rust);}
.newsletter-input{
  flex:1;background:rgba(245,240,232,0.06);border:none;outline:none;
  padding:14px 20px;font-family:var(--sans);font-size:0.85rem;color:var(--cream);
}
.newsletter-input::placeholder{color:rgba(245,240,232,0.35);}
.newsletter-submit{
  background:var(--gold);color:var(--ink);border:none;
  padding:14px 24px;font-family:var(--sans);font-size:0.75rem;
  letter-spacing:0.1em;text-transform:uppercase;transition:background 0.2s;white-space:nowrap;
}
.newsletter-submit:hover{background:var(--gold-light);}
.newsletter-success{display:none;padding:14px 24px;font-size:0.82rem;color:var(--mist);letter-spacing:0.06em;}
.newsletter-error{display:none;padding:14px 24px;font-size:0.82rem;color:var(--rust);letter-spacing:0.06em;}
.newsletter-form.success .newsletter-submit,.newsletter-form.error .newsletter-submit{display:none;}
.newsletter-form.success .newsletter-success{display:block;}
.newsletter-form.error .newsletter-error{display:block;}

/* === FORM ELEMENTS (shared across checkout/account) === */
.field-group{display:grid;gap:1rem;}
.field-group.two{grid-template-columns:repeat(2,1fr);}
.field{display:grid;gap:0.45rem;}
.field label{font-size:0.78rem;letter-spacing:0.08em;text-transform:uppercase;color:var(--ink-light);}
.field input,.field textarea,.field select{
  width:100%;padding:0.85rem 0.95rem;
  border:1px solid var(--border);background:rgba(245,240,232,0.88);
  color:var(--ink);transition:border-color var(--transition),background var(--transition);
  font-family:var(--sans);
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--gold);background:#fff;}
.field textarea{min-height:120px;resize:vertical;}

/* === RESPONSIVE === */
@media(max-width:1200px){.footer-top{grid-template-columns:1fr 1fr;gap:2rem;}}
@media(max-width:900px){.nav-links{display:none;}.hamburger{display:flex;}}
@media(max-width:600px){
  footer{padding:3rem 6vw 1.5rem;}
  .footer-top{grid-template-columns:1fr;}
  .back-to-top{bottom:1rem;right:1rem;}
  .toast{bottom:3.5rem;font-size:0.75rem;padding:10px 18px;}
  .cart-drawer{width:100%;}
  .newsletter{flex-direction:column;padding:4rem 6vw;}
  .newsletter-form{min-width:unset;width:100%;}
}