/**
 * QR Studio — Custom QR Code Generator (stylesheet)
 * (c) 2026 @sazkehh. All rights reserved.
 * Instagram : https://www.instagram.com/sazkehh
 * GitHub    : https://github.com/zakuradev
 * Unauthorized copying, modification, or redistribution is prohibited.
 */
:root{
  --bg:#f1f5f9;
  --card:#ffffff;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --line-soft:#eef2f7;
  --accent:#0f172a;
  --accent-blue:#0ea5e9;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px -12px rgba(15,23,42,.18);
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  -webkit-font-smoothing:antialiased;line-height:1.5;
}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 16px}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px;letter-spacing:-.01em}
.brand-text small{font-size:12px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:#334155;background:#f8fafc;border:1px solid var(--line);border-radius:999px;padding:7px 12px;white-space:nowrap}
a.badge{text-decoration:none;cursor:pointer;transition:.15s}
a.badge:hover{border-color:#cbd5e1;background:#eef2f7;color:var(--ink)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px #dcfce7}

/* Layout */
.layout{display:grid;gap:16px;padding-top:18px;padding-bottom:36px}
@media(min-width:1024px){
  .layout{grid-template-columns:400px 1fr;align-items:start;padding-top:28px;padding-bottom:40px}
  .preview-col{position:sticky;top:92px}
  .mobile-bar{display:none !important}
}

/* Preview */
.preview-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.preview-head{display:flex;align-items:flex-start;justify-content:space-between;padding:18px 18px 12px}
.preview-head h1{margin:0;font-size:16px;letter-spacing:-.01em}
.preview-head p{margin:4px 0 0;font-size:12px;color:var(--muted);font-family:var(--mono)}
.icon-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);background:#fff;border-radius:10px;color:#334155;cursor:pointer;transition:.15s}
.icon-btn:hover{border-color:#cbd5e1;background:#f8fafc}
.qr-stage{margin:0 18px;background:#fff;border:1px solid var(--line);border-radius:14px;display:grid;place-items:center;min-height:300px;padding:12px;position:relative;transition:background-color .2s}
.qr-stage.is-transparent{
  background-color:#fff;
  background-image:linear-gradient(45deg,#e2e8f0 25%,transparent 25%),linear-gradient(-45deg,#e2e8f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e2e8f0 75%),linear-gradient(-45deg,transparent 75%,#e2e8f0 75%);
  background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0}
#qr-holder{display:grid;place-items:center;width:100%;max-width:360px}
#qr-holder canvas,#qr-holder svg,#qr-holder img{width:100% !important;height:auto !important;border-radius:6px;display:block}
.qr-empty{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:10px;text-align:center;color:var(--muted);background:#fff;border-radius:14px;padding:20px}
.qr-empty p{margin:0;font-size:13px}
.preview-foot{padding:16px 18px 18px;display:grid;gap:12px}
.seg{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:#f1f5f9;border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px}
.seg > *{min-width:0}
.seg-btn{border:0;background:transparent;border-radius:9px;padding:10px;font:600 13px var(--font);color:var(--muted);cursor:pointer;font-family:var(--mono)}
.seg-btn.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08);border:1px solid var(--line)}
.export-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.hint{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;color:var(--muted);margin:12px 2px 0}
.hint svg{flex:none;margin-top:2px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 16px;border-radius:12px;font:600 14px var(--font);cursor:pointer;border:1px solid transparent;transition:.15s;touch-action:manipulation}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#1e293b}
.btn-secondary{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-secondary:hover{border-color:#cbd5e1;background:#f8fafc}
.btn-ghost{background:#f8fafc;color:#334155;border-color:var(--line)}
.btn-ghost:hover{background:#eef2f7}
.btn-block{width:100%}
.link-btn{background:none;border:0;color:var(--accent-blue);font:600 13px var(--font);cursor:pointer;padding:6px}

/* Controls */
.controls-col{display:grid;gap:16px;align-content:start}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.card-head{display:flex;align-items:center;gap:9px;margin-bottom:14px}
.card-icon{width:30px;height:30px;display:grid;place-items:center;background:#f1f5f9;border:1px solid var(--line);border-radius:9px;color:#334155}
.card-head h2{margin:0;font-size:14px;font-weight:700;letter-spacing:-.01em;flex:1}
.label{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:14px 0 8px}
.label:first-of-type{margin-top:0}

/* Tabs */
.tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;background:#f1f5f9;border:1px solid var(--line);border-radius:12px;padding:4px;margin-bottom:14px}
.tabs > *{min-width:0}
.tabs > *{min-width:0}
.tab{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;background:transparent;border-radius:9px;padding:11px 4px;font:600 12.5px var(--font);color:var(--muted);cursor:pointer;min-height:44px}
.tab.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08);border:1px solid var(--line)}
.panel{display:none}.panel.is-active{display:block}

/* Fields */
.field{display:grid;gap:7px;margin-bottom:12px;align-content:start}
.field:last-child{margin-bottom:0}
.grid-2 > .field{margin-bottom:0}
.tab-panels .grid-2 + .grid-2,
.tab-panels .grid-2 + .field{margin-top:20px}
.field span{font-size:13px;font-weight:600;color:#334155}
.field.inline{margin:0}
input[type=url],input[type=text],input[type=tel],input[type=email],textarea,select{
  width:100%;font:500 16px var(--font);color:var(--ink);background:#fff;border:1px solid #cbd5e1;border-radius:12px;padding:13px 14px;outline:none;transition:.15s;
}
@media(min-width:768px){input[type=url],input[type=text],input[type=tel],input[type=email],textarea,select{font-size:14px}}
input:focus,textarea:focus,select:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px rgba(14,165,233,.15)}
textarea{resize:vertical;min-height:76px}
input,select,textarea{min-width:0;max-width:100%}
input[type=range]{min-width:0}
.row-between > *{min-width:0}
.dropzone > *{min-width:0}
.grid-2{display:grid;gap:12px;row-gap:20px;grid-template-columns:minmax(0,1fr)}
@media(min-width:560px){.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}}
.grid-2 > *{min-width:0}
.grid-2.corners{margin-top:20px}
.grid-2.keep-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:559px){.grid-2.keep-2{gap:8px}}

/* Style picker */
.style-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.style-grid > *{min-width:0}
.style-btn{display:grid;gap:7px;justify-items:center;border:1px solid var(--line);background:#fff;border-radius:12px;padding:11px 6px;font:600 12px var(--font);color:#475569;cursor:pointer;min-height:64px}
.style-btn.is-active{border-color:var(--ink);background:#0f172a;color:#fff}
.style-btn.is-active .sw{border-color:rgba(255,255,255,.25)}
.sw{width:26px;height:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:2px;padding:3px;background:#f1f5f9;border:1px solid var(--line);border-radius:7px}
.style-btn.is-active .sw{background:rgba(255,255,255,.12)}
.sw i{display:block;background:currentColor;min-width:0;min-height:0}
.sw-rounded i{border-radius:3px}.sw-rounded i:nth-child(5){border-radius:50%}
.sw-dots i{border-radius:50%}
.sw-classy i{border-radius:1px}.sw-classy i:nth-child(2),.sw-classy i:nth-child(4),.sw-classy i:nth-child(6),.sw-classy i:nth-child(8){border-radius:50%}
.sw-classy-rounded i{border-radius:50%}.sw-classy-rounded i:nth-child(1),.sw-classy-rounded i:nth-child(3),.sw-classy-rounded i:nth-child(7),.sw-classy-rounded i:nth-child(9){border-radius:3px}
.sw-square i{border-radius:0}
.sw-extra i{border-radius:50%}.sw-extra i:nth-child(1),.sw-extra i:nth-child(9){border-radius:6px}
.pill-group{display:flex;flex-wrap:wrap;gap:6px}
.pill{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 14px;font:600 12.5px var(--font);color:#475569;cursor:pointer;min-height:40px}
.pill.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
@media(max-width:559px){.pill{padding:8px 11px;font-size:12px}}

/* Colors */
.color-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.color-row > *{min-width:0}
@media(max-width:420px){.color-row{grid-template-columns:repeat(2,minmax(0,1fr))}.color-field:last-child{grid-column:1/-1}}
.color-field{display:grid;gap:7px}
.color-field span{font-size:13px;font-weight:600;color:#334155}
.color-wrap{display:flex;align-items:center;gap:8px;border:1px solid #cbd5e1;border-radius:12px;padding:6px 10px 6px 6px;background:#fff}
.color-wrap code{font:500 11px var(--mono);color:#475569;letter-spacing:.02em}
input[type=color]{-webkit-appearance:none;appearance:none;width:40px;height:32px;border:0;border-radius:8px;background:none;cursor:pointer;padding:0}
input[type=color]::-webkit-color-swatch-wrapper{padding:0}
input[type=color]::-webkit-color-swatch{border:1px solid rgba(0,0,0,.12);border-radius:8px}
.row-between{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-top:12px;flex-wrap:wrap}
#bg-only-row{justify-content:flex-start}
.presets{display:flex;justify-content:center;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line-soft)}
.preset{width:34px;height:34px;border-radius:50%;cursor:pointer;border:2px solid #fff;outline:1px solid var(--line);background:linear-gradient(135deg,var(--a) 50%,var(--b) 50%)}
.preset.is-active{outline:2px solid var(--ink);outline-offset:2px}

/* Switch + check */
.switch{display:inline-flex;align-items:center;gap:8px;cursor:pointer}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.switch .track{width:38px;height:22px;border-radius:999px;background:#cbd5e1;display:inline-flex;align-items:center;padding:2px;transition:.15s}
.switch .thumb{width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:.15s}
.switch input:checked + .track{background:var(--ink)}
.switch input:checked + .track .thumb{transform:translateX(16px)}
.switch em{font-style:normal;font-size:12.5px;font-weight:600;color:#475569}
.check{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:500;color:#334155;cursor:pointer;min-height:44px}
.check input{position:absolute;opacity:0;width:1px;height:1px}
.check .box{width:22px;height:22px;flex:none;border-radius:7px;border:1.5px solid #cbd5e1;background:#fff;display:grid;place-items:center;color:#fff;transition:.15s}
.check input:checked + .box{background:var(--ink);border-color:var(--ink)}
.check input:focus-visible + .box{outline:2px solid var(--accent-blue);outline-offset:2px}

/* Dropzone */
.dropzone{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;border:1.5px dashed #cbd5e1;border-radius:14px;padding:14px;cursor:pointer;background:#f8fafc;transition:.15s;position:relative;overflow:hidden}
.dropzone:hover,.dropzone.drag{border-color:var(--accent-blue);background:#f0f9ff}
.dz-icon{width:44px;height:44px;display:grid;place-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;color:#475569}
.dz-text{display:grid;gap:2px}
.dz-text strong{font-size:14px}
.dz-text small{font-size:12px;color:var(--muted)}
#logo-thumb{width:52px;height:52px;object-fit:cover;border-radius:12px;border:1px solid var(--line);background:#fff}

/* Sliders */
.slider-row{margin-top:14px}
.slider-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:2px}
.slider-head label{font-size:13px;font-weight:600;color:#334155}
.slider-head output{font:600 12px var(--mono);color:var(--muted);background:#f1f5f9;border:1px solid var(--line);border-radius:7px;padding:3px 8px}
input[type=range]{width:100%;height:44px;-webkit-appearance:none;appearance:none;background:transparent;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:999px;background:linear-gradient(to right,var(--ink) var(--fill,40%),#e2e8f0 var(--fill,40%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;margin-top:-9px;border-radius:50%;background:#fff;border:2px solid var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.2)}
input[type=range]::-moz-range-track{height:6px;border-radius:999px;background:#e2e8f0}
input[type=range]::-moz-range-progress{height:6px;border-radius:999px;background:var(--ink)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:2px solid var(--ink)}

/* Mobile bar */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-top:1px solid var(--line)}
.mobile-bar .btn-block{flex:1}

/* Toast + footer */
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(12px);background:#0f172a;color:#fff;font-size:13px;font-weight:600;padding:11px 16px;border-radius:999px;opacity:0;pointer-events:none;transition:.2s;z-index:50;max-width:calc(100vw - 32px);text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(min-width:1024px){.toast{bottom:32px}}
.footer{padding:0 16px 104px;text-align:center}
@media(min-width:1024px){.footer{padding-bottom:40px}}
.footer p{font-size:12.5px;color:var(--muted);margin:0}
.footer .love{vertical-align:-2px}
.footer a{color:var(--ink);font-weight:600;text-decoration:none}
.footer a:hover{text-decoration:underline}