:root{
  --gold: #c082d7;
  --light-gold: #df91fc;
  --dark-gold: #a154bd;
  --black:#0f1011;
  --charcoal:#141517;
  --charcoal-light:#1a1c1f;
  --ivory:#f6f2e9;
  --muted:#a8a294;
  --muted-dark:#8a8375;
  --border:#2a2b2f;
  --border-light:#363740;
  --success:#22c55e;
  --error:#ef4444;
  --radius:16px;
  --radius-sm:12px;
  --shadow-sm:0 4px 12px rgba(0,0,0,.15);
  --shadow-md:0 8px 24px rgba(0,0,0,.25);
  --shadow-lg:0 20px 40px rgba(0,0,0,.4);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}

/* page shell */
.pd-container{max-width:1400px;margin:0 auto;padding:2rem}
.pd-breadcrumb{display:flex;align-items:center;gap:.5rem;margin-bottom:2rem;font-size:.9rem}
.pd-breadcrumb a{color:var(--muted);text-decoration:none;transition:var(--transition)}
.pd-breadcrumb a:hover{color:var(--gold)}
.pd-breadcrumb span{color:var(--muted-dark)}

/* grid */
.pd-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:3rem;align-items:start}
@media (max-width:1024px){.pd-grid{grid-template-columns:1fr;gap:2rem}}

/* media card */
.pd-media-card{background:var(--charcoal);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow-md);position:relative;overflow:hidden}
.pd-media-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.3}

.pd-stage{height:600px;border-radius:var(--radius-sm);overflow:hidden;background:linear-gradient(135deg,#0a0b0d 0%,#12131a 100%);display:flex;align-items:center;justify-content:center;position:relative;margin-bottom:1.5rem}
@media (max-width:768px){.pd-stage{height:400px}}

.pd-3d,.pd-cover{width:100%;height:100%;border-radius:var(--radius-sm)}
.pd-cover img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.pd-cover:hover img{transform:scale(1.05)}
.pd-empty{color:var(--muted);font-size:1.1rem}

/* thumbs */
.pd-thumbs{display:flex;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}
.pd-thumb{width:80px;height:80px;border-radius:var(--radius-sm);border:2px solid var(--border);background:var(--charcoal-light);cursor:pointer;transition:var(--transition);display:flex;align-items:center;justify-content:center;overflow:hidden}
.pd-thumb:hover{border-color:var(--gold-light);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.pd-thumb.is-active{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold)}
.pd-thumb img{width:100%;height:100%;object-fit:cover;border-radius:calc(var(--radius-sm) - 2px)}
.pd-thumb-3d{font-weight:700;color:var(--gold);font-size:.9rem}

/* description */
.pd-desc-wrap{position:relative}
.pd-desc{color:var(--muted);line-height:1.7;font-size:.95rem}
.pd-desc-collapsed{max-height:120px;overflow:hidden;position:relative}
.pd-desc-fade{position:absolute;bottom:0;left:0;right:0;height:60px;background:linear-gradient(to bottom,transparent,var(--charcoal));pointer-events:none}
.pd-desc-toggle{margin-top:1rem;background:transparent;border:1px solid var(--border);color:var(--gold);padding:.75rem 1.5rem;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);font-size:.9rem}
.pd-desc-toggle:hover{background:var(--gold);color:var(--black);border-color:var(--gold)}

/* info card */
.pd-info-card{background:linear-gradient(135deg,var(--charcoal) 0%,var(--charcoal-light) 100%);border:1px solid var(--border-light);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow-lg);position:sticky;top:100px}
@media (max-width:1024px){.pd-info-card{position:static}}

.pd-title{margin:0 0 1rem;font-size:clamp(1.5rem,4vw,2rem);font-weight:700;line-height:1.2;background:linear-gradient(135deg,var(--ivory) 0%,var(--gold-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.pd-price{display:flex;align-items:baseline;gap:.5rem;margin-bottom:2rem;padding:1rem;background:rgba(212,175,55,.1);border:1px solid rgba(212,175,55,.2);border-radius:var(--radius-sm)}
.pd-price-curr{color:var(--muted);font-size:1rem}
.pd-price-amt{color:var(--gold);font-weight:700;font-size:clamp(1.5rem,3vw,2rem)}

/* actions */
.pd-actions{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}
.pd-qty{display:flex;align-items:center;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--charcoal-light)}
.pd-qty button{width:44px;height:44px;background:transparent;border:0;color:var(--ivory);cursor:pointer;transition:var(--transition);font-size:1.2rem;font-weight:700}
.pd-qty button:hover{background:var(--gold);color:var(--black)}
.pd-qty input{width:80px;height:44px;background:transparent;border:0;color:var(--ivory);text-align:center;font-size:1rem;font-weight:600}

.btn-primary{background:linear-gradient(135deg,var(--gold) 0%,var(--gold-light) 100%);border:0;color:var(--black);padding:.875rem 2rem;border-radius:var(--radius-sm);cursor:pointer;font-weight:700;font-size:1rem;transition:var(--transition);position:relative;overflow:hidden;flex:1;min-width:180px}
.btn-primary::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}
.btn-primary:hover::before{left:100%}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}

.pd-attrs{list-style:none;margin:0 0 2rem 0;padding:0;display:grid;gap:1rem}
.pd-attr-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:var(--radius-sm);transition:var(--transition)}
.pd-attr-item:hover{background:rgba(255,255,255,.05);border-color:var(--border-light)}
.pd-attr-label{color:var(--muted);font-size:.9rem}
.pd-attr-value{color:var(--ivory);font-weight:600}

.pd-quick{display:flex;gap:1rem}
.btn-secondary{background:transparent;border:1px solid var(--border);color:var(--ivory);padding:.75rem 1.5rem;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);font-size:.9rem;flex:1}
.btn-secondary:hover{background:var(--border);border-color:var(--border-light);transform:translateY(-1px)}

/* sticky */
.pd-sticky{display:none;position:fixed;bottom:1rem;left:1rem;right:1rem;z-index:1000;background:rgba(15,16,17,.95);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;box-shadow:var(--shadow-lg);transform:translateY(100%);transition:var(--transition)}
.pd-sticky-content{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.pd-sticky-info{min-width:0;flex:1}
.pd-sticky-name{font-weight:600;font-size:.9rem;margin-bottom:.25rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pd-sticky-price{color:var(--gold);font-size:.85rem;font-weight:600}
.pd-sticky-actions{display:flex;align-items:center;gap:.75rem}
.pd-sticky-qty{width:60px;height:36px;background:var(--charcoal-light);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--ivory);text-align:center;font-size:.9rem}
.pd-sticky-btn{background:var(--gold);border:0;color:var(--black);padding:.5rem 1rem;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;cursor:pointer;transition:var(--transition)}
.pd-sticky-btn:hover{background:var(--gold-light)}

@media (max-width:768px){
  .pd-container{padding:1rem}
  .pd-sticky{display:block}
  .pd-info-card{padding-bottom:120px}
}

/* states */
.success-flash{animation:successPulse .6s ease-out}
@keyframes successPulse{0%{background-color:var(--success)}100%{background-color:var(--gold)}}
.loading{opacity:.6;pointer-events:none;position:relative}
.loading::after{content:'';position:absolute;top:50%;left:50%;width:20px;height:20px;margin:-10px 0 0 -10px;border:2px solid transparent;border-top:2px solid var(--ivory);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}


/* /css/product-details.css */
/* keep your existing colors and layout above; only button alignment changes below */

/* let global .btn, .btn-primary, .btn-secondary from site.css control visuals */
.pd-actions .btn-primary{min-width:180px;flex:1}
.pd-actions .btn{height:44px}

.pd-quick .btn{flex:1}

.pd-desc-toggle.btn{height:auto;padding:.75rem 1.5rem}

/* mobile sticky uses main button */
.pd-sticky .btn-primary{min-width:120px}

/* quantity buttons remain local */
.pd-qty{display:flex;align-items:center;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--charcoal-light)}
.pd-qty button{width:44px;height:44px;background:transparent;border:0;color:var(--ivory);cursor:pointer}
.pd-qty input{width:80px;height:44px;background:transparent;border:0;color:var(--ivory);text-align:center;font-size:1rem;font-weight:600}