/* ============================================================
   THẢO MỘC UYÊN NHIÊN — CHECKOUT
   Phong cách: thaomocuyennhien.com original
   Palette: moss · cream · gold · ink (8/5/4/4 tiers)
   ============================================================ */

:root{
  --moss-deepest:#0f1f12; --moss-deep:#14281a; --moss-dark:#1e3a23; --moss:#2f4a32;
  --moss-mid:#4a6b45; --moss-light:#7a9b6e; --moss-pale:#a8c49a; --moss-mist:#cde0bf;
  --cream:#faf6ee; --cream-warm:#f4ebd8; --cream-soft:#fbf3e1; --beige:#e8dcc0; --beige-deep:#d4c4a0;
  --gold:#b8943a; --gold-light:#d6b85a; --gold-soft:#e8d394; --gold-pale:#f3e6b8;
  --ink:#1a2418; --ink-mid:#3d4d3a; --ink-soft:#6b7a64; --ink-pale:#9aa498;
  --white:#ffffff;
  --easing:cubic-bezier(.22,1,.36,1);
  --easing-back:cubic-bezier(.34,1.56,.64,1);
  --trans:.5s var(--easing);
  --trans-slow:.9s var(--easing);
  --shadow-soft:0 4px 24px rgba(30,58,35,.08);
  --shadow-mid:0 14px 44px rgba(30,58,35,.14);
  --shadow-deep:0 34px 88px rgba(20,40,26,.22);
  --shadow-glow:0 0 80px rgba(184,148,58,.28);
  --shadow-gold:0 14px 44px rgba(184,148,58,.32);
  --danger:#b85a3a;
  --success:#4a8a3a;
}

*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
/* Ưu tiên HTML hidden attribute trên mọi class có display:flex/grid */
[hidden]{display:none !important}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  font-family:'Be Vietnam Pro',sans-serif;
  background:var(--cream);
  color:var(--ink);
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;color:inherit;font-size:inherit}
.font-serif{font-family:'Cormorant Garamond',serif}
.italic{font-style:italic}
::selection{background:var(--moss-dark);color:var(--gold-light)}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--cream-warm)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--moss-mid),var(--moss-dark));border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--moss-dark),var(--moss-deepest))}

/* ===== SCROLL PROGRESS ===== */
.scroll-prog{
  position:fixed;top:0;left:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--gold-light),var(--moss-pale),var(--gold));
  background-size:200% 100%;
  z-index:9999;width:0;
  box-shadow:0 0 14px rgba(184,148,58,.7);
  transition:width .1s linear;
  animation:gradshift 4s linear infinite;
}
@keyframes gradshift{to{background-position:200% 0}}

/* ===== LOADER ===== */
#loader{
  position:fixed;inset:0;
  background:radial-gradient(circle at center,var(--moss-dark) 0%,var(--moss-deepest) 80%);
  z-index:99999;display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:36px;
  transition:opacity 1s var(--easing),visibility 1s;
}
#loader.gone{opacity:0;visibility:hidden;pointer-events:none}
.ld-leaf{
  width:84px;height:84px;
  animation:ldspin 2.6s var(--easing) infinite;
  filter:drop-shadow(0 0 22px rgba(184,148,58,.5));
}
@keyframes ldspin{
  0%{transform:rotate(0) scale(1)}
  50%{transform:rotate(180deg) scale(1.15)}
  100%{transform:rotate(360deg) scale(1)}
}
.ld-leaf path{fill:var(--gold-light)}
.ld-logo{
  font-family:'Cormorant Garamond',serif;font-size:2.6rem;
  color:var(--cream);text-align:center;letter-spacing:1px;font-weight:600;
}
.ld-logo span{
  color:var(--gold-light);font-style:italic;display:block;
  font-size:1rem;letter-spacing:6px;text-transform:uppercase;
  margin-top:6px;opacity:.75;font-family:'Be Vietnam Pro',sans-serif;
}
.ld-bar{width:260px;height:2px;background:rgba(255,255,255,.12);border-radius:2px;overflow:hidden}
.ld-fill{
  height:100%;width:0;
  background:linear-gradient(90deg,var(--moss-pale),var(--gold-light),var(--gold-soft));
  border-radius:2px;animation:ldfill 2.2s var(--easing) forwards;
  box-shadow:0 0 12px rgba(184,148,58,.6);
}
@keyframes ldfill{to{width:100%}}
.ld-cap{font-size:.7rem;color:rgba(255,255,255,.5);letter-spacing:5px;text-transform:uppercase;font-weight:500}

/* ===== FLOATING LEAVES BG ===== */
.leaves-bg{position:fixed;inset:0;pointer-events:none;z-index:1;overflow:hidden}
.leaf{position:absolute;opacity:0;animation:leaffall linear infinite}
.leaf svg{width:100%;height:100%;fill:var(--moss-light);opacity:.16}
@keyframes leaffall{
  0%{transform:translateY(-10vh) rotate(0) translateX(0);opacity:0}
  10%{opacity:.5}
  90%{opacity:.5}
  100%{transform:translateY(110vh) rotate(720deg) translateX(120px);opacity:0}
}

/* ===== CUSTOM CURSOR ===== */
.cursor-dot,.cursor-ring{position:fixed;pointer-events:none;z-index:99998;border-radius:50%;transform:translate(-50%,-50%);transition:transform .25s var(--easing),opacity .3s}
.cursor-dot{width:6px;height:6px;background:var(--gold-light);box-shadow:0 0 12px var(--gold-light)}
.cursor-ring{width:38px;height:38px;border:1.5px solid rgba(184,148,58,.45);transition:transform .12s var(--easing),width .3s,height .3s,border-color .3s,background .3s}
.cursor-ring.hovering{width:64px;height:64px;border-color:var(--gold);background:rgba(184,148,58,.08)}
@media(max-width:1024px){.cursor-dot,.cursor-ring{display:none}}

/* ===== DEMO BANNER ===== */
.demo-banner{
  position:relative;z-index:50;
  background:linear-gradient(90deg,var(--gold-pale),var(--cream-warm),var(--gold-pale));
  background-size:200% 100%;
  color:#8c6f24;
  padding:12px 28px;
  display:flex;align-items:center;gap:14px;
  font-size:.85rem;font-weight:500;
  border-bottom:1px solid rgba(184,148,58,.32);
  animation:gradshift 8s linear infinite;
}
.demo-dot{width:8px;height:8px;border-radius:50%;background:var(--gold);flex-shrink:0;animation:pulse 2s infinite;box-shadow:0 0 10px var(--gold)}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:.6}}
.demo-close{margin-left:auto;background:transparent;border:none;color:#8c6f24;font-size:18px;padding:4px 12px;border-radius:8px;transition:var(--trans)}
.demo-close:hover{background:rgba(184,148,58,.18)}

/* ===== HEADER ===== */
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:20px 0;transition:var(--trans);backdrop-filter:blur(0);
}
.hdr.with-banner{top:42px}
.hdr.scrolled{
  background:rgba(250,246,238,.92);
  backdrop-filter:blur(28px) saturate(160%);
  box-shadow:0 1px 0 rgba(30,58,35,.06),0 10px 36px rgba(20,40,26,.08);
  padding:12px 0;
}
.hdr-in{max-width:1280px;margin:0 auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.brand{display:flex;align-items:center;gap:14px;font-family:'Cormorant Garamond',serif;font-size:1.55rem;font-weight:700;color:var(--moss-dark);letter-spacing:.3px;transition:var(--trans)}
.brand:hover{transform:translateX(2px)}
.brand-mark{
  width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--moss-dark),var(--moss-mid));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 22px rgba(30,58,35,.28),inset 0 1px 0 rgba(255,255,255,.1);
  position:relative;overflow:hidden;
}
.brand-mark::before{
  content:'';position:absolute;inset:-2px;
  background:conic-gradient(from 0deg,transparent,var(--gold-light),transparent);
  animation:rotaring 4s linear infinite;opacity:.55;
}
.brand-mark svg{width:26px;height:26px;fill:var(--gold-light);position:relative;z-index:1}
@keyframes rotaring{to{transform:rotate(360deg)}}
.brand em{font-style:italic;color:var(--gold);font-weight:600;font-size:.82em;display:block;letter-spacing:1.5px;text-transform:uppercase;margin-top:-4px}
.brand-name{display:flex;flex-direction:column;line-height:1}
.hdr-nav{display:flex;gap:6px;align-items:center}
.hdr-nav a{font-size:.9rem;font-weight:500;color:var(--ink-mid);padding:10px 18px;border-radius:30px;transition:var(--trans);position:relative}
.hdr-nav a:hover{color:var(--moss-dark);background:rgba(122,155,110,.12)}
.hdr-back{display:inline-flex;align-items:center;gap:8px}

/* ===== HERO ===== */
.hero{
  position:relative;
  padding:160px 0 80px;
  overflow:hidden;
  background:linear-gradient(180deg,var(--cream) 0%,var(--cream-soft) 50%,var(--cream-warm) 100%);
}
.hero::before{
  content:'';position:absolute;inset:0;background:
    radial-gradient(ellipse at 20% 30%,rgba(122,155,110,.22) 0%,transparent 50%),
    radial-gradient(ellipse at 80% 70%,rgba(184,148,58,.16) 0%,transparent 55%),
    radial-gradient(ellipse at 50% 100%,rgba(168,196,154,.18) 0%,transparent 60%);
  pointer-events:none;
}
.hero::after{
  content:'';position:absolute;inset:0;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cpath fill='%237a9b6e' fill-opacity='.04' d='M100 30 L130 100 L100 170 L70 100 Z'/%3E%3C/svg%3E");
  opacity:.5;pointer-events:none;
}
.hero-in{max-width:1280px;margin:0 auto;padding:0 32px;text-align:center;position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 20px;background:rgba(255,255,255,.7);
  border:1px solid rgba(184,148,58,.32);backdrop-filter:blur(10px);
  border-radius:50px;font-size:.78rem;font-weight:600;
  color:var(--moss-dark);letter-spacing:2.5px;text-transform:uppercase;
  margin-bottom:28px;box-shadow:var(--shadow-soft);
  animation:fadeUp 1s var(--easing) .3s both;
}
.hero-tag .dot{width:7px;height:7px;background:var(--gold);border-radius:50%;box-shadow:0 0 12px var(--gold);animation:pulse 2s infinite}
.hero h1{
  font-family:'Cormorant Garamond',serif;
  font-size:clamp(2.4rem,5vw,4rem);font-weight:600;line-height:1.08;
  color:var(--moss-deepest);margin-bottom:24px;letter-spacing:-1.2px;
  animation:fadeUp 1s var(--easing) .5s both;
}
.hero h1 .gold{
  background:linear-gradient(135deg,var(--gold),var(--gold-light),var(--gold-soft));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-style:italic;font-weight:500;display:inline-block;position:relative;
}
.hero h1 .gold::after{
  content:'';position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  transform:scaleX(0);transform-origin:left;
  animation:lineExpand 1.4s var(--easing) 1.5s forwards;
}
@keyframes lineExpand{to{transform:scaleX(1)}}
.hero-sub{
  font-size:1.1rem;color:var(--ink-mid);
  max-width:620px;margin:0 auto 32px;line-height:1.85;
  animation:fadeUp 1s var(--easing) .7s both;
}
.hero-trust{
  display:flex;justify-content:center;gap:32px;flex-wrap:wrap;
  animation:fadeUp 1s var(--easing) .9s both;
}
.hero-trust-item{
  display:flex;align-items:center;gap:10px;
  font-size:.86rem;color:var(--ink-soft);
}
.hero-trust-item::before{
  content:'✓';color:var(--gold);font-weight:700;font-size:.9rem;
}
.hero-trust-item strong{color:var(--moss-dark);font-weight:600}
@keyframes fadeUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}

/* ===== TRUST STRIP ===== */
.trust-strip{background:linear-gradient(180deg,var(--moss-deepest) 0%,var(--moss-deep) 100%);padding:50px 0;position:relative;overflow:hidden}
.trust-strip::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(184,148,58,.12) 0%,transparent 70%)}
.trust-in{max-width:1280px;margin:0 auto;padding:0 32px;display:grid;grid-template-columns:repeat(4,1fr);gap:50px;position:relative;z-index:2}
.trust-item{text-align:center;color:var(--cream)}
.trust-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  display:flex;align-items:center;justify-content:center;
  color:var(--moss-deepest);font-size:1.4rem;font-weight:700;
  box-shadow:0 8px 22px rgba(184,148,58,.42);position:relative;
}
.trust-icon::before{content:'';position:absolute;inset:-4px;border:1px solid rgba(184,148,58,.4);border-radius:50%;animation:pulseRing 2.4s infinite}
@keyframes pulseRing{0%{transform:scale(1);opacity:1}100%{transform:scale(1.5);opacity:0}}
.trust-title{font-size:1.02rem;font-weight:700;margin-bottom:6px;letter-spacing:.3px;color:var(--gold-soft)}
.trust-sub{font-size:.82rem;color:rgba(250,246,238,.7);line-height:1.5}

/* ===== SECTION BASE ===== */
section.checkout-sec{position:relative;padding:90px 0;z-index:2}
.container{max-width:1280px;margin:0 auto;padding:0 32px;position:relative;z-index:2}
.section-title{text-align:center;margin-bottom:60px}
.section-tag{display:inline-block;padding:8px 20px;background:rgba(184,148,58,.12);border:1px solid rgba(184,148,58,.32);border-radius:30px;font-size:.74rem;font-weight:700;color:var(--gold);letter-spacing:3px;text-transform:uppercase;margin-bottom:22px}
.section-title h2{font-family:'Cormorant Garamond',serif;font-size:clamp(2rem,3.6vw,3.2rem);font-weight:600;line-height:1.12;color:var(--moss-deepest);margin-bottom:18px;letter-spacing:-.8px}
.section-title h2 .gold{color:var(--gold);font-style:italic;font-weight:500}
.section-title p{font-size:1.04rem;color:var(--ink-mid);max-width:640px;margin:0 auto;line-height:1.8}

.reveal{opacity:0;transform:translateY(40px);transition:opacity 1s var(--easing),transform 1s var(--easing)}
.reveal.in{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.12s}
.reveal-delay-2{transition-delay:.24s}
.reveal-delay-3{transition-delay:.36s}

/* ===== CHECKOUT GRID ===== */
.checkout-grid{
  display:grid;
  grid-template-columns:1fr 440px;
  gap:48px;align-items:start;
}
@media (max-width:1024px){.checkout-grid{grid-template-columns:1fr}}

/* ===== STEP CARDS ===== */
.step{
  background:linear-gradient(180deg,var(--white) 0%,var(--cream-soft) 100%);
  border-radius:28px;padding:40px 36px;margin-bottom:24px;
  box-shadow:var(--shadow-soft);
  border:1px solid rgba(184,148,58,.14);
  position:relative;overflow:hidden;
  transition:var(--trans);
}
.step::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--moss-light),var(--gold));
  background-size:200% 100%;
  animation:gradshift 4s linear infinite;
  opacity:.7;
}
.step:hover{box-shadow:var(--shadow-mid)}
.step-head{display:flex;align-items:center;gap:16px;margin-bottom:30px}
.step-num{
  width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--moss-dark),var(--moss));
  color:var(--gold-light);
  display:flex;align-items:center;justify-content:center;
  font-family:'Cormorant Garamond',serif;font-size:1.4rem;font-weight:700;
  flex-shrink:0;box-shadow:0 6px 16px rgba(30,58,35,.28);
  border:2px solid var(--gold-soft);
}
.step-title{font-family:'Cormorant Garamond',serif;font-weight:600;font-size:1.7rem;color:var(--moss-deepest);margin:0;letter-spacing:-.3px;line-height:1.2}
.step-title em{color:var(--gold);font-style:italic}

/* ===== PRODUCT CARDS ===== */
.products{display:grid;gap:20px}
.product-card{
  display:grid;grid-template-columns:160px 1fr;gap:24px;
  padding:24px;border-radius:22px;
  border:2px solid rgba(184,148,58,.14);
  background:var(--white);
  transition:var(--trans);position:relative;overflow:hidden;
}
.product-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--gold-light));
  opacity:0;transition:var(--trans);
}
.product-card:hover{
  border-color:rgba(184,148,58,.35);
  transform:translateY(-4px);box-shadow:var(--shadow-mid);
}
.product-card:hover::before{opacity:1}
.product-card.is-selected{
  border-color:var(--gold);
  background:linear-gradient(180deg,var(--white) 0%,var(--cream-soft) 100%);
  box-shadow:0 0 0 4px rgba(184,148,58,.1),var(--shadow-mid);
}
.product-card.is-selected::before{opacity:1}

.product-visual{
  position:relative;
  background:var(--cream-warm);
  border-radius:18px;aspect-ratio:1;
  overflow:hidden;
  box-shadow:inset 0 2px 8px rgba(30,58,35,.08);
}
.product-visual img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1s var(--easing);
}
.product-card:hover .product-visual img{transform:scale(1.08)}
.product-visual::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(20,40,26,.18) 100%);
  pointer-events:none;z-index:1;
}
.product-ribbon{
  position:absolute;top:12px;left:12px;
  background:linear-gradient(135deg,var(--moss-deepest),var(--moss-dark));
  color:var(--gold-light);
  font-size:.66rem;font-weight:700;
  padding:5px 12px;border-radius:30px;
  letter-spacing:1.5px;text-transform:uppercase;
  box-shadow:0 4px 12px rgba(30,58,35,.32);z-index:2;
}

.product-info{display:flex;flex-direction:column;gap:8px}
.product-tag{font-size:.7rem;color:var(--gold);letter-spacing:2.5px;text-transform:uppercase;font-weight:700}
.product-name{font-family:'Cormorant Garamond',serif;font-weight:600;font-size:1.5rem;color:var(--moss-deepest);margin:0;letter-spacing:-.2px;line-height:1.15}
.product-name em{color:var(--gold);font-style:italic}
.product-meta{font-size:.82rem;color:var(--ink-pale);margin:0;font-style:italic}
.product-desc{font-size:.92rem;color:var(--ink-mid);margin:6px 0 0;line-height:1.65}

.product-foot{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-top:auto;padding-top:14px;border-top:1px solid rgba(184,148,58,.18)}
.product-price{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.price-num{font-family:'Cormorant Garamond',serif;font-weight:700;font-size:1.7rem;color:var(--moss-dark);line-height:1}
.price-unit{font-size:.82rem;color:var(--ink-soft)}
.price-tag-demo{font-size:.6rem;color:var(--gold);background:rgba(184,148,58,.15);padding:2px 8px;border-radius:30px;font-style:italic;letter-spacing:.5px;margin-left:6px;text-transform:uppercase;font-weight:600}

/* QTY CONTROL */
.qty-control{
  display:flex;align-items:center;gap:0;
  border:1.5px solid rgba(184,148,58,.32);
  border-radius:50px;background:var(--white);
  overflow:hidden;
  box-shadow:inset 0 2px 6px rgba(30,58,35,.04);
}
.qty-btn{
  width:40px;height:40px;background:transparent;border:none;
  font-size:18px;font-weight:600;color:var(--moss-dark);
  display:flex;align-items:center;justify-content:center;
  transition:background .2s var(--easing);
}
.qty-btn:hover{background:var(--moss-mist);color:var(--moss-deepest)}
.qty-btn:active{transform:scale(.94)}
.qty-input{
  width:46px;height:40px;text-align:center;
  border:none;background:transparent;
  font-size:1rem;font-weight:600;color:var(--moss-deepest);
  font-family:'Cormorant Garamond',serif;
  -moz-appearance:textfield;
}
.qty-input::-webkit-outer-spin-button,.qty-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}

/* COMBO HINT */
.combo-hint{
  margin-top:24px;padding:18px 24px;
  background:linear-gradient(135deg,rgba(184,148,58,.12),rgba(122,155,110,.08));
  border-radius:18px;
  border:1px dashed rgba(184,148,58,.42);
  font-size:.9rem;color:#7a5e1f;line-height:1.7;
  display:flex;align-items:center;gap:14px;
  position:relative;overflow:hidden;
}
.combo-hint::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(184,148,58,.06),transparent);
  pointer-events:none;
}
.combo-icon{
  font-size:24px;flex-shrink:0;
  filter:drop-shadow(0 4px 8px rgba(184,148,58,.32));
  animation:floatY 3s var(--easing) infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.combo-hint strong{color:var(--moss-dark);font-weight:700}

/* ===== FORM ===== */
.form{display:flex;flex-direction:column;gap:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:600px){.form-row{grid-template-columns:1fr}}

.form-field{display:flex;flex-direction:column;gap:8px;position:relative}
.form-label{font-size:.82rem;font-weight:600;color:var(--moss-dark);letter-spacing:.3px;display:flex;align-items:center;gap:6px}
.form-label em{font-style:normal;color:var(--gold);font-weight:700}
.form-label .hint{font-style:italic;color:var(--ink-pale);font-weight:400;font-size:.78rem}

.form-field input,.form-field select,.form-field textarea{
  padding:14px 18px;
  border:1.5px solid rgba(184,148,58,.22);
  border-radius:14px;background:var(--white);
  font-size:.96rem;color:var(--ink);
  transition:var(--trans);font-family:inherit;
  box-shadow:inset 0 2px 6px rgba(30,58,35,.03);
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--gold);
  background:var(--white);
  box-shadow:0 0 0 4px rgba(184,148,58,.1),inset 0 2px 6px rgba(30,58,35,.04);
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-pale)}
.form-field textarea{resize:vertical;min-height:84px;line-height:1.65}

.form-field.has-error input,.form-field.has-error select,.form-field.has-error textarea{
  border-color:var(--danger);
  background:#fff5f0;
}

/* ===== PAYMENT METHODS ===== */
.payment-methods{display:flex;flex-direction:column;gap:14px}
.payment-option{
  display:grid;
  grid-template-columns:48px 1fr auto;
  gap:18px;align-items:center;
  padding:18px 22px;
  background:var(--white);
  border:2px solid rgba(184,148,58,.14);
  border-radius:18px;
  cursor:pointer;
  transition:var(--trans);
  position:relative;overflow:hidden;
}
.payment-option::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--gold-light));
  opacity:0;transition:var(--trans);
}
.payment-option:hover{
  border-color:rgba(184,148,58,.35);
  transform:translateY(-2px);
  box-shadow:var(--shadow-soft);
}
.payment-option.is-active{
  border-color:var(--gold);
  background:linear-gradient(180deg,var(--white) 0%,var(--cream-soft) 100%);
  box-shadow:0 0 0 4px rgba(184,148,58,.1),var(--shadow-soft);
}
.payment-option.is-active::before{opacity:1}
.payment-option input[type="radio"]{
  position:absolute;opacity:0;pointer-events:none;
}
.payment-icon{
  width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--moss-dark),var(--moss));
  color:var(--gold-light);
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;
  box-shadow:0 6px 14px rgba(30,58,35,.22);
  flex-shrink:0;
}
.payment-option.is-active .payment-icon{
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  color:var(--moss-deepest);
}
.payment-info{display:flex;flex-direction:column;gap:4px}
.payment-info strong{
  font-family:'Cormorant Garamond',serif;
  font-weight:600;font-size:1.1rem;
  color:var(--moss-deepest);letter-spacing:-.2px;
}
.payment-info em{
  font-style:normal;font-size:.86rem;
  color:var(--ink-mid);line-height:1.55;
}
.payment-info em strong{
  font-family:inherit;font-size:.86rem;
  color:var(--gold);font-weight:600;
}
.payment-tag{
  font-size:.7rem;font-weight:700;
  padding:5px 12px;border-radius:30px;
  letter-spacing:1.2px;text-transform:uppercase;
  white-space:nowrap;
}
.payment-tag-recommend{
  background:linear-gradient(135deg,var(--moss-dark),var(--moss));
  color:var(--gold-light);
  box-shadow:0 4px 12px rgba(30,58,35,.25);
}
.payment-option.is-active .payment-tag-recommend{
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  color:var(--moss-deepest);
}
.payment-tag-extra{
  background:rgba(184,90,58,.12);
  color:#9a3a1a;
  border:1px solid rgba(184,90,58,.32);
}
@media (max-width:600px){
  .payment-option{grid-template-columns:40px 1fr;gap:12px;padding:14px 16px}
  .payment-tag{grid-column:2;justify-self:start;margin-top:6px}
  .payment-icon{width:40px;height:40px;font-size:1.1rem}
  .payment-info strong{font-size:1rem}
}

/* ===== SUMMARY (cột phải sticky) ===== */
.summary-column{position:sticky;top:120px}
@media (max-width:1024px){.summary-column{position:static}}

.summary-card{
  background:linear-gradient(180deg,var(--white) 0%,var(--cream-soft) 100%);
  border-radius:28px;padding:36px;
  box-shadow:var(--shadow-mid);
  border:1px solid rgba(184,148,58,.18);
  position:relative;overflow:hidden;
}
.summary-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--moss-light),var(--gold),var(--moss-light));
  background-size:200% 100%;
  animation:gradshift 4s linear infinite;
}

.summary-title{
  font-family:'Cormorant Garamond',serif;font-weight:600;
  font-size:1.5rem;color:var(--moss-deepest);
  margin:0 0 24px;letter-spacing:-.2px;
  display:flex;align-items:center;gap:10px;
}
.summary-title::before{
  content:'';width:6px;height:24px;
  background:linear-gradient(180deg,var(--gold),var(--gold-light));
  border-radius:3px;
}

.summary-items{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}
.summary-empty{
  font-style:italic;color:var(--ink-pale);
  font-size:.92rem;padding:24px;text-align:center;
  background:rgba(184,148,58,.04);
  border:1px dashed rgba(184,148,58,.24);
  border-radius:14px;
}
.summary-item{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:12px 16px;
  background:rgba(122,155,110,.06);
  border-radius:12px;font-size:.92rem;
  transition:var(--trans);
}
.summary-item:hover{background:rgba(122,155,110,.1)}
.summary-item-name strong{color:var(--moss-deepest);font-weight:600}
.summary-item-qty{font-size:.78rem;color:var(--gold);font-weight:700;margin-left:6px;font-family:'Cormorant Garamond',serif}
.summary-item-price{font-weight:600;color:var(--moss-dark);font-family:'Cormorant Garamond',serif;font-size:1rem}

.summary-divider{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(184,148,58,.32),transparent);
  margin:20px 0;
}

.summary-rows{margin:0;display:flex;flex-direction:column;gap:10px}
.summary-row{display:flex;justify-content:space-between;align-items:center;font-size:.92rem}
.summary-row dt{color:var(--ink-mid)}
.summary-row dd{margin:0;color:var(--moss-deepest);font-weight:600;font-family:'Cormorant Garamond',serif}
.summary-row-discount dd{color:var(--success)}

.summary-total{
  display:flex;justify-content:space-between;align-items:baseline;
  margin:20px 0;padding:20px 24px;
  background:linear-gradient(135deg,var(--moss-deepest),var(--moss-dark));
  border-radius:18px;color:var(--cream);
  box-shadow:0 8px 22px rgba(30,58,35,.28);
  position:relative;overflow:hidden;
}
.summary-total::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(184,148,58,.18),transparent 70%);pointer-events:none}
.summary-total-label{
  font-family:'Cormorant Garamond',serif;font-size:1.1rem;
  color:var(--gold-soft);font-style:italic;
  position:relative;z-index:1;
}
.summary-total-amount{
  font-family:'Cormorant Garamond',serif;font-weight:700;
  font-size:2rem;color:var(--gold-light);letter-spacing:-.5px;
  position:relative;z-index:1;
  text-shadow:0 2px 12px rgba(184,148,58,.4);
}

.summary-bonus{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  background:linear-gradient(135deg,rgba(184,148,58,.16),rgba(184,148,58,.08));
  border:1px solid rgba(184,148,58,.32);
  border-radius:14px;
  font-size:.88rem;color:#7a5e1f;font-weight:500;
  margin-bottom:16px;
}
.summary-bonus::before{content:'🎁';font-size:1.3rem}
.summary-bonus strong{color:var(--moss-dark)}

/* ===== QR BLOCK ===== */
.qr-block{
  margin:24px 0;padding:28px;
  background:linear-gradient(180deg,var(--moss-deepest) 0%,var(--moss-deep) 100%);
  border-radius:22px;color:var(--cream);
  position:relative;overflow:hidden;
  box-shadow:var(--shadow-deep);
}
.qr-block::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 50% 0%,rgba(184,148,58,.18),transparent 60%);
  pointer-events:none;
}
.qr-title{
  font-family:'Cormorant Garamond',serif;font-weight:500;font-size:1.15rem;
  color:var(--gold-soft);margin:0 0 18px;text-align:center;
  letter-spacing:.3px;position:relative;z-index:1;
  display:flex;align-items:center;justify-content:center;gap:10px;
}
.qr-title::before,.qr-title::after{
  content:'';width:20px;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold));
}
.qr-title::after{background:linear-gradient(90deg,var(--gold),transparent)}

.qr-image-wrap{
  position:relative;background:var(--white);
  border-radius:18px;padding:16px;
  margin:0 auto 24px;width:fit-content;
  box-shadow:0 12px 32px rgba(0,0,0,.25);
  border:3px solid var(--gold);
}
.qr-image-wrap img{width:220px;height:220px;display:block;border-radius:6px}
.qr-image-wrap img:not([src]),.qr-image-wrap img[src=""]{background:var(--cream-warm)}
.qr-badge{
  position:absolute;bottom:-12px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  color:var(--moss-deepest);
  font-size:.74rem;font-weight:700;
  padding:6px 16px;border-radius:30px;
  letter-spacing:1.2px;text-transform:uppercase;
  white-space:nowrap;
  box-shadow:0 6px 16px rgba(184,148,58,.4);
}

.qr-info{margin:24px 0 16px;position:relative;z-index:1}
.qr-info > div{
  display:flex;justify-content:space-between;align-items:center;
  padding:10px 14px;font-size:.84rem;
  background:rgba(255,255,255,.05);
  border-radius:10px;margin-bottom:6px;
  border:1px solid rgba(184,148,58,.18);
}
.qr-info dt{color:rgba(250,246,238,.7);margin:0;font-size:.78rem;letter-spacing:.3px;text-transform:uppercase;font-weight:500}
.qr-info dd{margin:0;font-weight:600;color:var(--gold-light);font-family:'Courier New',monospace;font-size:.86rem}
.qr-note{
  font-size:.78rem;color:rgba(250,246,238,.65);
  margin:14px 0 0;text-align:center;font-style:italic;line-height:1.55;
  position:relative;z-index:1;
  padding-top:14px;border-top:1px dashed rgba(184,148,58,.22);
}
.qr-note strong{color:var(--gold-light);font-style:normal;font-weight:600}

/* ===== ACTIONS ===== */
.actions{display:flex;flex-direction:column;gap:12px;margin:24px 0 16px}

.btn{
  padding:18px 28px;border:none;border-radius:50px;
  font-size:.98rem;font-weight:600;font-family:inherit;
  display:flex;align-items:center;justify-content:center;gap:10px;
  transition:var(--trans);text-decoration:none;letter-spacing:.3px;
  position:relative;overflow:hidden;
}
.btn-primary{
  background:linear-gradient(135deg,var(--moss-dark),var(--moss));
  color:var(--cream);
  box-shadow:0 14px 36px rgba(30,58,35,.32),inset 0 1px 0 rgba(255,255,255,.12);
}
.btn-primary::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--gold),var(--moss-mid));
  opacity:0;transition:var(--trans);
}
.btn-primary > *{position:relative;z-index:1}
.btn-primary:hover:not(:disabled)::before{opacity:1}
.btn-primary:hover:not(:disabled){
  transform:translateY(-3px);
  box-shadow:0 22px 50px rgba(30,58,35,.42),0 0 36px rgba(184,148,58,.3);
  color:var(--gold-soft);
}
.btn-primary:disabled{background:linear-gradient(135deg,var(--ink-pale),var(--ink-soft));cursor:not-allowed;opacity:.6;box-shadow:none}
.btn-arrow{font-size:18px;transition:transform .3s var(--easing)}
.btn-primary:hover:not(:disabled) .btn-arrow{transform:translateX(6px)}

.btn-zalo{
  padding:14px 22px;background:rgba(255,255,255,.7);
  border:1.5px solid rgba(30,58,35,.18);
  color:var(--moss-dark);font-size:.88rem;
  border-radius:50px;
  display:flex;align-items:center;justify-content:center;gap:8px;
  transition:var(--trans);backdrop-filter:blur(10px);
}
.btn-zalo:hover{
  background:linear-gradient(135deg,#0084ff,#0068db);color:#fff;
  border-color:#0068db;transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(0,104,255,.32);
}
.zalo-icon{font-size:16px}

/* ===== TRUST FOOTER IN CARD ===== */
.summary-trust{
  padding-top:18px;border-top:1px dashed rgba(184,148,58,.22);
  display:flex;flex-direction:column;gap:8px;
  font-size:.78rem;color:var(--ink-soft);text-align:center;
}
.summary-trust > span{display:flex;align-items:center;justify-content:center;gap:8px}
.summary-trust > span::before{content:'✓';color:var(--gold);font-weight:700}

/* ===== GUARANTEE STRIP ===== */
.guarantee-strip{
  margin-top:60px;padding:40px;
  background:linear-gradient(135deg,var(--moss-deepest),var(--moss-dark));
  border-radius:28px;color:var(--cream);
  text-align:center;position:relative;overflow:hidden;
  box-shadow:var(--shadow-deep);
}
.guarantee-strip::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(184,148,58,.2),transparent 70%)}
.guarantee-icon{
  width:72px;height:72px;margin:0 auto 18px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  display:flex;align-items:center;justify-content:center;
  font-size:2rem;
  box-shadow:0 12px 32px rgba(184,148,58,.42);position:relative;z-index:1;
}
.guarantee-strip h3{
  font-family:'Cormorant Garamond',serif;font-weight:600;
  font-size:clamp(1.6rem,3vw,2.2rem);
  color:var(--cream);margin:0 0 12px;line-height:1.2;
  position:relative;z-index:1;
}
.guarantee-strip h3 .gold{color:var(--gold-light);font-style:italic}
.guarantee-strip p{
  color:rgba(250,246,238,.8);max-width:560px;margin:0 auto;
  font-size:1rem;line-height:1.7;position:relative;z-index:1;
}

.guarantee-disclaimer{
  margin-top:18px!important;padding-top:18px;
  border-top:1px dashed rgba(184,148,58,.22);
  font-size:.78rem!important;font-style:italic;
  color:rgba(250,246,238,.6)!important;
  max-width:560px;margin-left:auto;margin-right:auto;
  position:relative;z-index:1;
}

/* ===== FOOTER ===== */
.site-footer{
  background:linear-gradient(180deg,var(--moss-deepest) 0%,#070e08 100%);
  color:var(--cream);padding:60px 0 30px;
  position:relative;overflow:hidden;margin-top:60px;
}
.site-footer a{color:var(--gold-light);transition:var(--trans)}
.site-footer a:hover{color:var(--cream)}
.site-footer::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold) 50%,transparent);
}
.footer-in{max-width:1280px;margin:0 auto;padding:0 32px;text-align:center}
.footer-brand{
  display:inline-flex;align-items:center;gap:12px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{width:42px;height:42px}
.footer-brand .brand-mark svg{width:22px;height:22px}
.footer-brand-name{
  font-family:'Cormorant Garamond',serif;
  font-size:1.4rem;font-weight:700;color:var(--cream);
}
.footer-tagline{
  font-family:'Cormorant Garamond',serif;font-style:italic;
  color:var(--gold-soft);font-size:1.05rem;margin-bottom:24px;
}
.footer-info{
  font-size:.86rem;color:rgba(250,246,238,.6);margin:6px 0;line-height:1.7;
}
.footer-info strong{color:var(--cream)}
.footer-bottom{
  margin-top:32px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:.78rem;color:rgba(250,246,238,.5);
}

/* ===== FLOATING ZALO ===== */
.float-zalo{
  position:fixed;bottom:24px;right:24px;z-index:998;
  width:60px;height:60px;border-radius:50%;
  background:linear-gradient(135deg,#0084ff,#0068db);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;text-decoration:none;
  box-shadow:0 14px 36px rgba(0,104,255,.42);
  transition:var(--trans);
  animation:floatY 3s var(--easing) infinite;
}
.float-zalo::before{
  content:'';position:absolute;inset:-4px;
  border:2px solid rgba(0,104,255,.5);border-radius:50%;
  animation:pulseRing 2s infinite;
}
.float-zalo:hover{transform:scale(1.1) rotate(-6deg)}

/* ===== MOBILE TWEAKS ===== */
@media (max-width:768px){
  section.checkout-sec{padding:60px 0}
  .hero{padding:130px 0 50px}
  .step{padding:28px 24px}
  .product-card{grid-template-columns:110px 1fr;gap:16px;padding:18px}
  .product-visual{aspect-ratio:1}
  .product-emoji{font-size:44px}
  .product-name{font-size:1.2rem}
  .product-foot{flex-direction:column;align-items:flex-start;gap:14px}
  .summary-card{padding:24px}
  .summary-total-amount{font-size:1.6rem}
  .qr-image-wrap img{width:180px;height:180px}
  .trust-in{grid-template-columns:repeat(2,1fr);gap:30px}
  .hero-trust{gap:20px}
  .container{padding:0 20px}
}

@media (max-width:480px){
  .hdr-back span:not(.brand-mark){display:none}
  .brand{font-size:1.2rem}
  .brand-mark{width:38px;height:38px}
  .brand-mark svg{width:20px;height:20px}
  .step-num{width:40px;height:40px;font-size:1.15rem}
  .step-title{font-size:1.4rem}
}