/* Sang Café — KHQR checkout demo
   Restrained near-monochrome: warm paper, ink, hairlines. The KHQR red is the only
   colour, reserved for payment moments so it means something when it appears. */
:root{
  --paper:#f6f4f0;
  --surface:#ffffff;
  --surface-2:#f0ede7;
  --ink:#1c1a17;
  --ink-2:#57524b;
  --ink-3:#8f887e;
  --line:#e6e1d8;
  --line-2:#d7d0c4;
  --accent:#e2231a;      /* KHQR red */
  --accent-ink:#c21d15;
  --ok:#2f8f52;
  --shadow:0 1px 2px rgba(28,26,23,.04), 0 18px 40px -24px rgba(28,26,23,.28);
  --display:'Bricolage Grotesque',Georgia,serif;
  --sans:'Hanken Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif;
  --khmer:'Kantumruy Pro',var(--sans);
  --r:12px; --r-lg:18px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#14120f;
    --surface:#1c1916;
    --surface-2:#252019;
    --ink:#f0ebe3;
    --ink-2:#b9b1a4;
    --ink-3:#867e72;
    --line:#2c2721;
    --line-2:#3a332b;
    --accent:#ff5a4d;
    --accent-ink:#ff6d61;
    --shadow:0 1px 2px rgba(0,0,0,.5), 0 20px 46px -24px rgba(0,0,0,.85);
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
:lang(km),.brand-sub,.km{font-family:var(--khmer)}
h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.02em;line-height:1.08;text-wrap:balance;margin:0}
a{color:var(--accent-ink);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1000px;margin:0 auto;padding-inline:22px}
.muted{color:var(--ink-2)}
.small{font-size:13px}
.center{text-align:center}
.opt{color:var(--ink-3);font-weight:400;font-size:.85em}
.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,Menlo,Consolas,monospace}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-family:var(--sans);font-size:15px;font-weight:600;cursor:pointer;line-height:1;transition:transform .08s ease,background .15s ease,border-color .15s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:#000}
.btn-ghost{background:transparent;color:var(--ink-2)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-block{width:100%}
.btn:disabled{opacity:.38;cursor:not-allowed;transform:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn-primary:hover{background:#fff;color:#000}}

/* top bar */
.topbar{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;padding-block:13px;gap:12px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)}
.brand:hover{text-decoration:none}
.logo{width:40px;height:40px;border-radius:11px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-family:var(--khmer);font-size:20px;font-weight:600;flex:none}
.brand-name{display:block;font-family:var(--display);font-weight:700;font-size:17px;letter-spacing:-.02em}
.brand-sub{display:block;font-size:11.5px;color:var(--ink-3)}
.topbar-right{display:flex;align-items:center;gap:10px}
.badge{font-size:11px;font-weight:600;letter-spacing:.03em;padding:5px 10px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line)}
.badge.live{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.cart-btn{position:relative;border:1px solid var(--line-2);background:var(--surface);border-radius:10px;padding:9px 15px;font-size:14px;font-weight:600;cursor:pointer;color:var(--ink)}
.cart-btn:hover{border-color:var(--ink-3)}
.cart-count{position:absolute;top:-8px;right:-8px;display:grid;place-items:center;min-width:20px;height:20px;padding:0 5px;background:var(--accent);color:#fff;border-radius:999px;font-size:11.5px;font-weight:700}

/* hero */
.hero{border-bottom:1px solid var(--line)}
.hero-in{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:center;padding-block:clamp(44px,8vw,84px)}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 16px}
.hero h1{font-size:clamp(36px,6.4vw,60px);margin:0 0 18px}
.hero h1 .accent{color:var(--accent-ink)}
.lede{font-size:clamp(15px,1.7vw,17px);color:var(--ink-2);max-width:42ch;margin:0 0 26px}
/* hero KHQR receipt card */
.hero-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--accent);color:#fff;font-weight:700;letter-spacing:.1em}
.hero-card-amt{font-family:var(--sans);font-variant-numeric:tabular-nums;letter-spacing:0}
.qr-frame{padding:22px;display:grid;place-items:center;background:var(--surface)}
.qr-frame-code{width:150px;height:150px}
.qr-frame-code img,.qr-frame-code canvas{width:100%!important;height:100%!important;display:block}
.hero-card-note{margin:0;padding:0 16px 16px;text-align:center;font-size:12.5px;color:var(--ink-3)}

/* section head */
.section-head{padding-block:clamp(36px,5vw,52px) 20px}
.section-head h2{font-size:clamp(24px,3.4vw,30px);margin:0 0 5px}

/* product grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;padding-bottom:44px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;transition:border-color .12s ease}
.card:hover{border-color:var(--line-2)}
.card.in-cart{border-color:var(--ink)}
.card-media{width:56px;height:56px;border-radius:14px;background:var(--surface-2);display:grid;place-items:center;font-size:30px;line-height:1;margin-bottom:14px}
.card-body{display:flex;flex-direction:column;flex:1}
.card-tag{align-self:flex-start;font-size:10.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:7px}
.card h3{font-family:var(--sans);font-weight:600;font-size:15.5px;letter-spacing:-.01em}
.card .km{font-size:12.5px;color:var(--ink-3);margin-top:1px}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;gap:8px;min-height:38px}
.card-action{display:inline-flex;align-items:center}
.price{font-weight:600;font-size:16px;font-variant-numeric:tabular-nums}
.add-btn{border:1px solid var(--line-2);background:var(--surface);color:var(--ink);border-radius:9px;padding:8px 16px;font-weight:600;font-size:13.5px;cursor:pointer;font-family:var(--sans)}
.add-btn:hover{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.stepper{display:inline-flex;align-items:center;gap:2px;border:1px solid var(--line-2);border-radius:9px;padding:2px}
.stepper button{width:30px;height:30px;border:none;background:transparent;color:var(--ink);font-size:18px;line-height:1;cursor:pointer;border-radius:7px}
.stepper button:hover{background:var(--surface-2)}
.stepper .n{min-width:24px;text-align:center;font-weight:600;font-variant-numeric:tabular-nums}

/* footer */
.foot{border-top:1px solid var(--line);padding-block:24px;font-size:13.5px}
.foot-in{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* checkout bar */
.checkout-bar{position:sticky;bottom:0;z-index:35;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--line-2)}
.checkout-bar-in{display:flex;align-items:center;gap:14px;padding-block:12px}
.bar-review{flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:1px;background:none;border:none;cursor:pointer;color:var(--ink);padding:2px 0;text-align:left}
.bar-review span{font-size:12.5px;color:var(--ink-3)}
.bar-review strong{font-size:19px;font-variant-numeric:tabular-nums}
#barCheckout{padding-inline:30px}

/* overlay / drawer / modal */
.overlay{position:fixed;inset:0;background:rgba(20,15,8,.42);z-index:50;animation:fade .16s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(400px,92vw);background:var(--surface);z-index:60;box-shadow:var(--shadow);display:flex;flex-direction:column;animation:slide .2s ease}
@keyframes slide{from{transform:translateX(24px);opacity:.6}to{transform:none;opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-head h3{font-family:var(--display);font-size:18px}
.icon-btn{border:none;background:none;font-size:16px;cursor:pointer;color:var(--ink-2);width:36px;height:36px;border-radius:9px}
.icon-btn:hover{background:var(--surface-2)}
.cart-lines{flex:1;overflow-y:auto;padding:4px 20px}
.cart-line{display:grid;grid-template-columns:1fr auto;gap:6px 12px;padding:16px 0;border-bottom:1px solid var(--line)}
.cart-line .nm{font-weight:600;font-size:14.5px}
.cart-line .km{font-size:12px;color:var(--ink-3)}
.mini-step{display:inline-flex;align-items:center;gap:10px;margin-top:9px}
.mini-step button{width:27px;height:27px;border:1px solid var(--line-2);background:var(--surface);border-radius:7px;cursor:pointer;font-size:15px;color:var(--ink);line-height:1}
.mini-step button:hover{border-color:var(--ink)}
.mini-step .n{min-width:16px;text-align:center;font-weight:600;font-variant-numeric:tabular-nums}
.cart-line .ln-price{font-weight:600;font-variant-numeric:tabular-nums;text-align:right;align-self:center}
.empty{color:var(--ink-3);text-align:center;padding:52px 16px;line-height:1.7}
.drawer-foot{border-top:1px solid var(--line);padding:18px 20px;display:flex;flex-direction:column;gap:14px}
.total-row{display:flex;justify-content:space-between;align-items:baseline}
.total-row strong{font-size:22px;font-variant-numeric:tabular-nums}

.modal{position:fixed;z-index:60;top:50%;left:50%;transform:translate(-50%,-50%);width:min(400px,94vw);max-height:94vh;overflow-y:auto;background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:24px 24px 26px;animation:pop .16s ease}
@keyframes pop{from{transform:translate(-50%,-47%);opacity:.4}to{transform:translate(-50%,-50%);opacity:1}}
.modal-close{position:absolute;top:14px;right:14px}
.pay-step h3{font-size:20px;margin:0 0 14px}

/* steps */
.steps{list-style:none;display:flex;gap:6px;margin:2px 0 20px;padding:0;counter-reset:s}
.steps li{flex:1;font-size:11.5px;font-weight:600;color:var(--ink-3);text-align:center;padding-top:22px;position:relative}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;top:0;left:50%;transform:translateX(-50%);width:22px;height:22px;border-radius:50%;background:var(--surface-2);color:var(--ink-3);display:grid;place-items:center;font-size:11px;font-variant-numeric:tabular-nums}
.steps li.on{color:var(--ink)}
.steps li.on::before{background:var(--ink);color:var(--paper)}
.steps li.done::before{content:"✓";background:var(--ok);color:#fff}

/* order summary */
.order-summary{background:var(--surface-2);border-radius:12px;padding:13px 15px;margin-bottom:18px}
.os-line{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;padding:3px 0;color:var(--ink-2)}
.os-line .os-name{color:var(--ink)}
.os-total{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--line-2);margin-top:9px;padding-top:10px;font-weight:600}
.os-total strong{font-size:19px;font-variant-numeric:tabular-nums}

/* form */
.cust-form{display:flex;flex-direction:column;gap:13px}
.cust-form label{display:flex;flex-direction:column;gap:6px;font-size:12.5px;font-weight:600;color:var(--ink-2)}
.cust-form input{border:1px solid var(--line-2);background:var(--paper);border-radius:9px;padding:11px 12px;font-family:var(--sans);font-size:15px;color:var(--ink)}
.cust-form input:focus{outline:none;border-color:var(--ink)}
.cust-form input.invalid{border-color:var(--accent)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* KHQR card */
.khqr-card{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:2px 0 14px;background:#fff}
.khqr-top{display:flex;align-items:center;justify-content:space-between;background:var(--accent);color:#fff;padding:13px 16px}
.khqr-brand{font-weight:700;letter-spacing:.12em;font-size:16px}
.khqr-amount{font-weight:700;font-variant-numeric:tabular-nums}
.qr-box{display:grid;place-items:center;padding:22px;background:#fff;min-height:200px}
.qr-box img,.qr-box canvas{width:196px!important;height:196px!important;display:block}
.khqr-merchant{text-align:center;font-weight:700;color:#1a1a1a;letter-spacing:.05em;margin:0 0 3px;font-size:13px}
#qrTran{margin:0 0 14px}

/* success */
.check{width:60px;height:60px;border-radius:50%;background:var(--ok);color:#fff;font-size:30px;display:grid;place-items:center;margin:4px auto 14px}
.done-meta{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border-radius:12px;overflow:hidden;margin:18px 0}
.done-meta div{background:var(--surface-2);padding:13px}
.done-meta span{display:block;font-size:11px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:3px}
.done-meta strong{font-size:14.5px}

/* spinner + toast */
.spinner{width:16px;height:16px;border:2.5px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.btn.loading .btn-label{opacity:.6}
.toast{position:fixed;bottom:82px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:11px 20px;border-radius:10px;font-size:14px;font-weight:500;z-index:80;box-shadow:var(--shadow)}

@media (max-width:760px){
  .hero-in{grid-template-columns:1fr;gap:30px}
  .hero-card{max-width:280px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
}
@media (max-width:560px){
  .drawer{top:auto;right:0;left:0;bottom:0;width:auto;max-height:82vh;border-radius:18px 18px 0 0;animation:sheet .22s ease}
  .modal{width:calc(100vw - 24px)}
}
@keyframes sheet{from{transform:translateY(24px);opacity:.5}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}