:root{
  --bg:#0a0c16;
  --bg-2:#10131f;
  --panel:rgba(255,255,255,.04);
  --panel-border:rgba(255,255,255,.09);
  --panel-hover:rgba(255,255,255,.07);
  --text:#eef0fb;
  --muted:#9aa1c4;
  --accent-1:#22d3ee;
  --accent-2:#8b5cf6;
  --accent-3:#f472b6;
  --grad:linear-gradient(120deg,#22d3ee,#8b5cf6 55%,#f472b6);
  --radius:18px;
  --radius-sm:12px;
  --danger:#fb7185;
  --success:#34d399;
  --shadow:0 24px 70px -20px rgba(0,0,0,.7);
}

*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none !important}

html,body{width:100%;min-height:100%}
body{
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  min-height:100dvh;
  overflow-x:hidden;
  position:relative;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}

/* ---------- Animated background ---------- */
.bg-blob{position:fixed;border-radius:50%;filter:blur(90px);opacity:.5;z-index:0;pointer-events:none;animation:float 20s ease-in-out infinite}
.blob-1{width:520px;height:520px;background:radial-gradient(circle,#1d4ed8,transparent 70%);top:-140px;left:-120px}
.blob-2{width:460px;height:460px;background:radial-gradient(circle,#7c3aed,transparent 70%);bottom:-120px;right:-80px;animation-delay:-7s}
.blob-3{width:380px;height:380px;background:radial-gradient(circle,#0e7490,transparent 70%);top:40%;right:22%;animation-delay:-13s;opacity:.35}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-30px) scale(1.06)}}

/* ---------- Layout ---------- */
.app{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:28px clamp(16px,4vw,40px) 40px;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;gap:22px}

.app-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;box-shadow:0 8px 24px -8px rgba(139,92,246,.8)}
.brand-title{font-family:'Sora',sans-serif;font-size:1.5rem;font-weight:800;letter-spacing:-.02em}
.brand-title span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-sub{color:var(--muted);font-size:.95rem;font-weight:500}

.app-main{display:flex;flex-direction:column;gap:20px;flex:1}

/* ---------- Drop zone ---------- */
.dropzone{position:relative;border:2px dashed rgba(255,255,255,.18);border-radius:22px;background:var(--panel);backdrop-filter:blur(12px);min-height:clamp(300px,42vh,440px);display:grid;place-items:center;cursor:pointer;transition:border-color .25s,background .25s,transform .2s;overflow:hidden}
.dropzone:hover{border-color:rgba(139,92,246,.6);background:var(--panel-hover)}
.dropzone.dragover{border-color:var(--accent-1);background:rgba(34,211,238,.08);transform:scale(1.01)}
.dropzone.dragover .dz-icon{animation:bounce 1s infinite}
.dz-inner{text-align:center;padding:24px;display:flex;flex-direction:column;align-items:center;gap:14px}
.dz-icon{width:92px;height:92px;border-radius:26px;background:linear-gradient(160deg,rgba(139,92,246,.25),rgba(34,211,238,.15));display:grid;place-items:center;color:#c4b5fd;border:1px solid rgba(255,255,255,.1)}
.dz-title{font-family:'Sora',sans-serif;font-size:clamp(1.25rem,2.6vw,1.7rem);font-weight:700;letter-spacing:-.01em}
.dz-sub{color:var(--muted)}
.dz-hint{color:var(--muted);font-size:.85rem}
.dz-hint b{color:var(--text)}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

.dz-overlay{position:absolute;inset:0;background:rgba(10,12,22,.86);backdrop-filter:blur(6px);display:none;place-items:center;z-index:2}
.dz-overlay.show{display:grid}
.dz-overlay-inner{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--accent-1);font-weight:600;font-size:1.05rem}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:inherit;font-size:.95rem;font-weight:600;border:none;cursor:pointer;border-radius:12px;padding:12px 22px;transition:transform .15s,box-shadow .2s,background .2s,opacity .2s;color:#fff}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);box-shadow:0 10px 30px -10px rgba(139,92,246,.9)}
.btn-primary:hover{box-shadow:0 14px 34px -10px rgba(139,92,246,1);transform:translateY(-1px)}
.btn-secondary{background:rgba(255,255,255,.08);border:1px solid var(--panel-border)}
.btn-secondary:hover{background:rgba(255,255,255,.14)}
.btn-ghost{background:transparent;border:1px solid var(--panel-border);color:var(--muted)}
.btn-ghost:hover{background:rgba(255,255,255,.06);color:var(--text)}
.btn-sm{padding:9px 16px;font-size:.85rem;border-radius:10px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- Panel & settings ---------- */
.panel{background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius);backdrop-filter:blur(12px)}
.settings{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:20px 22px}
.setting{display:flex;flex-direction:column;gap:10px;min-width:0}
.setting-label{font-size:.85rem;color:var(--muted);font-weight:500}
.setting-label b{color:var(--text);font-weight:700}

.segmented{display:flex;background:rgba(0,0,0,.3);border:1px solid var(--panel-border);border-radius:12px;padding:4px;gap:4px}
.seg{flex:1;font-family:inherit;font-size:.85rem;font-weight:600;padding:9px 10px;border:none;border-radius:9px;background:transparent;color:var(--muted);cursor:pointer;transition:all .2s}
.seg:hover{color:var(--text)}
.seg.active{background:var(--grad);color:#fff;box-shadow:0 6px 16px -6px rgba(139,92,246,.8)}

.range{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:100px;background:rgba(255,255,255,.12);outline:none;cursor:pointer}
.range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:#fff;border:3px solid var(--accent-2);box-shadow:0 4px 12px rgba(0,0,0,.4);cursor:pointer}
.range::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--accent-2);cursor:pointer}

.bg-picker{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.swatch{width:34px;height:34px;border-radius:10px;border:2px solid transparent;background:var(--c);cursor:pointer;position:relative;transition:transform .15s;box-shadow:inset 0 0 0 1px rgba(255,255,255,.15)}
.swatch:hover{transform:scale(1.1)}
.swatch.active{border-color:#fff;box-shadow:0 0 0 3px rgba(139,92,246,.5)}
.swatch-custom{display:grid;place-items:center;background:rgba(255,255,255,.08);color:var(--muted);font-size:1.1rem;border:2px dashed var(--panel-border)}
.swatch-custom input{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer}
.swatch-plus{pointer-events:none;line-height:1}

/* ---------- Status ---------- */
.status{display:flex;align-items:center;justify-content:center;gap:12px;padding:16px;color:var(--muted);font-weight:500}
.spinner{width:22px;height:22px;border-radius:50%;border:3px solid rgba(255,255,255,.15);border-top-color:var(--accent-1);animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Results ---------- */
.results{display:flex;flex-direction:column;gap:16px}
.results-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.results-title{font-family:'Sora',sans-serif;font-size:1.15rem;font-weight:700}
.results-stats{color:var(--muted);font-size:.85rem;font-weight:500}
.results-actions{display:flex;gap:10px}
.results-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}

.card{background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;animation:cardIn .4s ease both;transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-3px);border-color:rgba(139,92,246,.5)}
@keyframes cardIn{from{opacity:0;transform:translateY(16px) scale(.98)}to{opacity:1;transform:none}}

.card-thumb{position:relative;aspect-ratio:1;background:repeating-conic-gradient(#1a1d2e 0 25%,#12141f 0 50%) 0 0/24px 24px;display:grid;place-items:center;overflow:hidden;cursor:zoom-in}
.card-thumb img{max-width:100%;max-height:100%;object-fit:contain}
.card-format{position:absolute;top:10px;right:10px;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.2);font-size:.72rem;font-weight:700;letter-spacing:.04em;padding:4px 9px;border-radius:8px;color:#fff}

.card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:10px}
.card-name{font-size:.9rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:.78rem;color:var(--muted)}
.size-badge{font-weight:700;padding:3px 8px;border-radius:7px;font-size:.74rem}
.size-badge.smaller{color:#34d399;background:rgba(52,211,153,.12)}
.size-badge.bigger{color:#fb7185;background:rgba(251,113,133,.12)}
.size-badge.equal{color:#a5b4fc;background:rgba(165,180,252,.12)}
.card-sizes{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--muted)}
.card-sizes .arrow{color:var(--accent-2)}
.card-actions{display:flex;gap:8px;margin-top:2px}
.card-actions .btn{flex:1;justify-content:center}
.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--panel-border);background:transparent;color:var(--muted);cursor:pointer;font-size:1rem;transition:all .2s;display:grid;place-items:center;flex-shrink:0}
.icon-btn:hover{background:rgba(251,113,133,.15);color:var(--danger);border-color:rgba(251,113,133,.4)}

/* ---------- Footer ---------- */
.app-footer{text-align:center;color:var(--muted);font-size:.82rem;border-top:1px solid rgba(255,255,255,.06);margin-top:auto;padding:18px 0 4px}

/* ---------- Lightbox ---------- */
.lightbox{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:24px}
.lightbox-backdrop{position:absolute;inset:0;background:rgba(5,6,12,.85);backdrop-filter:blur(8px)}
.lightbox-content{position:relative;z-index:1;max-width:min(92vw,900px);max-height:90vh;display:flex;flex-direction:column;gap:12px;align-items:center}
.lightbox-content img{max-width:100%;max-height:74vh;border-radius:14px;box-shadow:var(--shadow);background:repeating-conic-gradient(#1a1d2e 0 25%,#12141f 0 50%) 0 0/24px 24px}
.lightbox-close{position:absolute;top:-14px;right:-14px;width:42px;height:42px;border-radius:50%;border:none;background:#fff;color:#111;font-size:1rem;cursor:pointer;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.lightbox-bar{display:flex;align-items:center;gap:16px;background:rgba(255,255,255,.06);border:1px solid var(--panel-border);padding:8px 12px 8px 16px;border-radius:12px}
.lightbox-bar span{font-size:.85rem;color:var(--text);max-width:46vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- Toasts ---------- */
.toasts{position:fixed;bottom:24px;right:24px;z-index:60;display:flex;flex-direction:column;gap:10px;max-width:340px}
.toast{background:rgba(20,23,38,.95);border:1px solid var(--panel-border);backdrop-filter:blur(10px);color:var(--text);padding:13px 16px;border-radius:12px;font-size:.88rem;box-shadow:var(--shadow);opacity:0;transform:translateY(12px);transition:all .3s}
.toast.show{opacity:1;transform:none}
.toast.success{border-left:3px solid var(--success)}
.toast.error{border-left:3px solid var(--danger)}
.toast.info{border-left:3px solid var(--accent-1)}

/* ---------- Responsive ---------- */
@media (max-width:720px){
  .settings{grid-template-columns:1fr}
  .brand-sub{display:none}
  .results-head{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}