/* ==========================================================
   PIEDRAS LLANES - TIENDA + BACK OFFICE FINAL
   Fondo blanco · limpio · Plesk safe
   ========================================================== */

:root{
  --ink:#071827;
  --text:#173246;
  --muted:#637889;
  --blue:#2f80c9;
  --aqua:#9ddcff;
  --aqua-soft:#eef8ff;
  --soft:#f8fcff;
  --line:#edf4fa;
  --white:#fff;
  --red:#b83a3a;
  --green:#257a52;
  --shadow:0 18px 55px rgba(7,24,39,.06);
  --shadow-soft:0 10px 30px rgba(7,24,39,.045);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{min-height:100vh;background:#fff;color:var(--ink);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 32px));margin:0 auto}

/* Header */
.site-header{
  position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(14px)
}
.site-nav{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:900;font-size:19px;text-decoration:none;white-space:nowrap}
.brand-gem,.mini-gem{width:16px;height:16px;display:inline-block;flex:0 0 auto;transform:rotate(45deg);background:linear-gradient(135deg,#5fb3d9,var(--aqua));box-shadow:0 0 18px rgba(47,128,201,.20)}
.mini-gem{width:12px;height:12px}
.main-menu{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.main-menu a{color:var(--muted);text-decoration:none;font-weight:800;font-size:14px;padding:10px 15px;border-radius:999px}
.main-menu a:hover,.main-menu a.active{background:var(--aqua-soft);color:#12385a}
.menu-toggle{display:none;width:44px;height:44px;border:0;border-radius:14px;background:var(--aqua-soft);padding:10px;cursor:pointer}
.menu-toggle span{display:block;height:2px;background:var(--ink);margin:5px 0;border-radius:999px}

/* Layout */
.hero,.section,.shop-section{position:relative;overflow:hidden;padding:58px 0 52px;background:#fff}
.hero::before,.section::before{content:"";position:absolute;width:470px;height:470px;right:-140px;top:22px;border-radius:50%;background:#f6fbff;z-index:-1}
.hero::after,.section::after{content:"";position:absolute;width:340px;height:340px;left:-140px;bottom:-160px;border-radius:50%;background:#fbf6f2;z-index:-1}
.hero-grid,.client-grid,.shop-hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:38px;align-items:center}
.client-grid{align-items:start}
.panel,.panel-soft,.card{background:#fff;border-radius:34px;padding:40px;box-shadow:var(--shadow);border:0}
.panel-soft{background:linear-gradient(135deg,#fff,#f8fcff);box-shadow:var(--shadow-soft)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;width:max-content;max-width:100%;margin-bottom:20px;padding:10px 15px;border-radius:999px;background:var(--aqua-soft);color:#12385a;font-weight:900;font-size:14px}
h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(42px,5.7vw,74px);line-height:.98;letter-spacing:-2px;color:var(--ink);margin-bottom:22px}
h1 span{color:var(--blue)}
h2{font-family:Georgia,"Times New Roman",serif;font-size:clamp(32px,4vw,48px);line-height:1.08;letter-spacing:-1px;color:var(--ink);margin-bottom:12px}
h3{color:var(--ink);font-size:20px;line-height:1.25}
p{color:var(--muted);line-height:1.65}
.lead{font-size:19px;line-height:1.65;color:var(--muted)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn,button,.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:14px 22px;border:0;border-radius:999px;text-decoration:none;font-weight:900;font-size:15px;cursor:pointer;background:linear-gradient(135deg,var(--aqua),var(--blue));color:var(--ink);box-shadow:0 16px 32px rgba(47,128,201,.16)}
.btn-secondary,.button.secondary{background:#fff;color:#12385a;box-shadow:var(--shadow-soft)}
.btn-danger{background:#fff;color:var(--red);box-shadow:var(--shadow-soft)}
.btn-small{min-height:40px;padding:10px 16px;font-size:13px}

/* Home QR */
.visual-box{min-height:470px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.qr-frame{width:min(285px,100%);aspect-ratio:1/1;border-radius:32px;background:#fff;padding:18px;box-shadow:0 18px 55px rgba(7,24,39,.075);margin:18px auto 22px}
.qr-frame img{width:100%;height:100%;object-fit:contain}
.qr-note{display:inline-flex;padding:10px 15px;border-radius:999px;background:var(--aqua-soft);color:#12385a;font-weight:900;font-size:14px}

/* Benefits */
.benefit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:32px}
.benefit-card{background:var(--soft);border-radius:24px;padding:20px}
.benefit-card strong{display:block;color:var(--ink);margin-bottom:7px;font-size:15px}
.benefit-card span{display:block;color:var(--muted);font-size:14px;line-height:1.5}

/* Shop */
.shop-tools{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;margin:30px 0}
.shop-search{display:flex;gap:8px}
.shop-search input{min-height:50px}
.category-row{display:flex;gap:10px;overflow:auto;padding:2px 0 8px}
.category-chip{display:inline-flex;padding:10px 15px;border-radius:999px;background:var(--aqua-soft);color:#12385a;text-decoration:none;font-weight:900;white-space:nowrap}
.category-chip.active{background:linear-gradient(135deg,var(--aqua),var(--blue));color:var(--ink)}
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:#fff;border-radius:30px;box-shadow:var(--shadow-soft);overflow:hidden;display:flex;flex-direction:column}
.product-img{min-height:230px;background:var(--soft);display:flex;align-items:center;justify-content:center;color:#12385a;font-weight:900;text-align:center;padding:20px}
.product-img img{width:100%;height:230px;object-fit:cover}
.product-body{padding:20px;display:grid;gap:10px;flex:1}
.product-meta{font-size:12px;font-weight:900;color:#12385a;background:var(--aqua-soft);border-radius:999px;padding:7px 10px;width:max-content}
.price{font-size:21px;font-weight:900;color:#12385a}
.product-actions{margin-top:auto;display:flex;gap:8px;flex-wrap:wrap}
.newsletter-card{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;background:linear-gradient(135deg,#fff,#f8fcff);border-radius:34px;padding:40px;box-shadow:var(--shadow-soft)}
.instagram-tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.insta-tile{background:#fff;border-radius:24px;padding:18px;box-shadow:var(--shadow-soft);min-height:110px;display:flex;align-items:center;justify-content:center;font-weight:900;color:#12385a}

/* Forms */
.client-form,.form{display:grid;gap:18px}
.form-row,.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;margin-bottom:8px;color:var(--text);font-weight:900;font-size:14px}
input,select,textarea{width:100%;min-height:52px;border:0;border-radius:18px;background:#f8fcff;padding:14px 16px;color:var(--ink);font-size:15px;outline:none;font-family:inherit;box-shadow:inset 0 0 0 1px #e8f1f7}
textarea{min-height:118px;resize:vertical}
input:focus,select:focus,textarea:focus{box-shadow:inset 0 0 0 1px #8fc7ff,0 0 0 4px rgba(47,128,201,.10)}
.checks{display:grid;gap:12px}
.check-line{display:grid;grid-template-columns:22px 1fr;gap:11px;align-items:start;color:var(--muted);font-size:14px;line-height:1.45}
.check-line input{width:20px;height:20px;min-height:20px;padding:0;margin-top:1px;box-shadow:none}
.anti-spam-input{display:none!important;position:absolute!important;left:-99999px!important;width:1px!important;height:1px!important;opacity:0!important;pointer-events:none!important}
.legal-note{margin-top:18px;color:#7b8f9e;font-size:12px;line-height:1.55}

/* Admin */
.admin-page{background:#fff}
.admin-layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.admin-sidebar{background:#fff;border-right:1px solid var(--line);padding:24px;position:sticky;top:0;height:100vh}
.admin-sidebar h2{font-size:26px;margin-bottom:20px}
.admin-sidebar a{display:block;text-decoration:none;color:var(--muted);font-weight:900;padding:12px 0}
.admin-sidebar a:hover,.admin-sidebar a.active{color:#12385a}
.admin-main{padding:30px;background:#fff}
.admin-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}
.admin-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat{background:var(--soft);border-radius:24px;padding:20px}
.stat strong{display:block;font-size:28px;color:#12385a}
.table-card{background:#fff;border-radius:30px;box-shadow:var(--shadow-soft);overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
th{color:#12385a;background:var(--soft)}
.admin-form{display:grid;gap:18px;max-width:900px}
.alert{padding:14px 16px;border-radius:18px;background:var(--aqua-soft);color:#12385a;font-weight:900;margin-bottom:18px}
.alert.error{background:#fff2f2;color:var(--red)}
.login-box{width:min(460px,calc(100% - 32px));margin:80px auto;background:#fff;border-radius:34px;box-shadow:var(--shadow);padding:34px}

/* Footer */
.site-footer{padding:34px 0;color:var(--muted);text-align:center;background:#fff;border-top:1px solid var(--line)}

@media(max-width:1020px){
  .hero-grid,.client-grid,.shop-hero-grid,.newsletter-card{grid-template-columns:1fr}
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .admin-layout{grid-template-columns:1fr}
  .admin-sidebar{position:relative;height:auto;border-right:0;border-bottom:1px solid var(--line)}
  .admin-grid{grid-template-columns:repeat(2,1fr)}
  .main-menu{position:fixed;top:74px;left:12px;right:12px;display:none;flex-direction:column;align-items:stretch;padding:18px;background:#fff;border-radius:24px;box-shadow:var(--shadow)}
  body.menu-open .main-menu{display:flex}
  .main-menu a{padding:14px 16px;font-size:15px}
  .menu-toggle{display:block}
}
@media(max-width:720px){
  .container{width:min(100% - 24px,560px)}
  .site-nav{min-height:66px}
  .main-menu{top:66px}
  .hero,.section,.shop-section{padding:34px 0}
  .panel,.panel-soft,.card,.newsletter-card{padding:24px;border-radius:28px}
  h1{font-size:clamp(38px,11vw,54px);letter-spacing:-1.3px}
  .benefit-grid,.form-row,.form-grid,.products-grid,.admin-grid,.instagram-tiles{grid-template-columns:1fr}
  .shop-tools{grid-template-columns:1fr}
  .shop-search{display:grid}
}


/* CUPÓN Y CARRITO */
.coupon-box{
  margin:26px 0;
  padding:24px;
  border-radius:28px;
  background:linear-gradient(135deg,#eef8ff,#fff);
  box-shadow:var(--shadow-soft);
  display:grid;
  gap:8px;
  max-width:420px;
}

.coupon-box span{
  color:var(--muted);
  font-weight:900;
  font-size:14px;
}

.coupon-box strong{
  display:block;
  color:#12385a;
  font-size:30px;
  letter-spacing:.5px;
  text-transform:uppercase;
}

.cart-empty{
  margin-top:28px;
}

.cart-table{
  margin-top:28px;
  overflow:auto;
  border-radius:26px;
  box-shadow:var(--shadow-soft);
}

.cart-table table{
  min-width:720px;
}

.qty-input{
  width:90px;
}

.cart-grid{
  display:grid;
  grid-template-columns:1fr 360px;
  gap:24px;
  margin-top:28px;
  align-items:start;
}

.coupon-panel,
.summary-panel{
  background:#fff;
  border-radius:28px;
  padding:24px;
  box-shadow:var(--shadow-soft);
}

.coupon-panel h2,
.summary-panel h2{
  font-size:30px;
}

.summary-row,
.summary-total{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}

.summary-row span,
.summary-total span{
  color:var(--muted);
  font-weight:900;
}

.summary-total{
  border-bottom:0;
  margin-top:6px;
}

.summary-total strong{
  color:#12385a;
  font-size:28px;
}

@media(max-width:980px){
  .cart-grid{
    grid-template-columns:1fr;
  }
}