[hidden]{display:none!important}

:root{
  --ink:#141625;
  --ink-2:#4b4f63;
  --muted:#8a8fa5;
  --line:#e4e6ef;
  --bg:#f5f6fa;
  --panel:#ffffff;
  --accent:#4f46e5;
  --accent-dark:#3d36c4;
  --danger:#c0392b;
  --radius:10px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--bg);
  display:flex;flex-direction:column;
}
h2,h3{font-family:'Space Grotesk',sans-serif;margin:0}

/* ---------- topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  height:64px;display:flex;align-items:center;gap:14px;
  padding:0 20px;background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px}
.brand-dot{width:12px;height:12px;border-radius:3px;background:linear-gradient(135deg,#4f46e5,#9333ea);display:inline-block}
.brand-name{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:18px;letter-spacing:-.02em}
.brand-name .arrow{color:var(--accent)}
.proj-chip{font-size:11px;color:var(--muted);background:#eef0f7;border:1px solid var(--line);padding:3px 9px;border-radius:99px}
.topbar-actions{margin-left:auto;display:flex;gap:8px}

/* ---------- buttons ---------- */
.btn{
  font:inherit;font-size:13px;font-weight:600;
  padding:9px 16px;border-radius:8px;cursor:pointer;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  transition:background .15s,transform .1s,border-color .15s;
}
.btn:hover{background:#f2f3f9}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-dark)}
.btn.ghost{background:transparent}
.btn.small{padding:6px 12px;font-size:12px}
.btn.wide{width:100%;margin-top:18px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.icon-btn{border:0;background:transparent;font-size:14px;cursor:pointer;color:var(--muted);padding:6px}
.icon-btn:hover{color:var(--ink)}
.self-end{align-self:flex-end}

/* ---------- layout ---------- */
.layout{flex:1;display:grid;grid-template-columns:440px 1fr;min-height:0}
.editor{overflow-y:auto;padding:20px;border-right:1px solid var(--line);background:var(--panel)}
.preview{display:flex;flex-direction:column;min-height:0;background:#ebedf4}

/* ---------- upload ---------- */
.upload-zone{
  border:2px dashed #c8cbdd;border-radius:var(--radius);
  padding:28px 16px;text-align:center;cursor:pointer;
  transition:border-color .15s,background .15s;
}
.upload-zone:hover,.upload-zone.drag{border-color:var(--accent);background:#f6f5ff}
.upload-icon{font-size:24px;color:var(--accent)}
.upload-title{font-weight:700;margin-top:6px}
.upload-sub{font-size:12px;color:var(--muted);margin-top:4px}

.extract-error{
  margin-top:14px;padding:12px 14px;border-radius:8px;
  background:#fdecea;border:1px solid #f2b8b1;color:var(--danger);
  display:flex;align-items:center;gap:12px;font-size:13px;
}
.extract-error .btn{flex-shrink:0}
.empty-hint{font-size:13px;color:var(--muted);line-height:1.6;margin-top:16px}

/* ---------- block cards ---------- */
.block-card{
  margin-top:14px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;overflow:hidden;
}
.block-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 14px;background:#f6f7fb;border-bottom:1px solid var(--line);
}
.block-type{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.block-num{font-size:11px;color:var(--muted)}
.block-body{padding:12px 14px}
.group{border:1px solid var(--line);border-radius:8px;padding:10px;margin-top:10px}
.group>.group-title{font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}

.fld{display:block;margin-top:10px}
.fld span{display:block;font-size:11px;font-weight:600;color:var(--ink-2);margin-bottom:4px}
.fld input,.fld textarea,.fld select{
  width:100%;font:inherit;font-size:13px;padding:8px 10px;
  border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);
}
.fld input:focus,.fld textarea:focus,.fld select:focus{outline:none;border-color:var(--accent)}
.fld textarea{resize:vertical;min-height:56px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* ---------- image slot ---------- */
.slot{display:flex;gap:12px;align-items:center;margin-top:12px;padding:10px;border:1px solid var(--line);border-radius:8px;background:#fafbfe}
.slot-thumb{width:72px;height:52px;border-radius:6px;background:#e9eaf2;overflow:hidden;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.slot-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.slot-thumb span{font-size:10px;color:var(--muted)}
.slot-meta{min-width:0;flex:1}
.slot-prompt{font-size:12px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:6px}

/* ---------- preview ---------- */
.preview-bar{
  display:flex;align-items:center;gap:14px;
  padding:12px 20px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.7);
}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
.seg-btn{font:inherit;font-size:12px;font-weight:600;padding:7px 16px;border:0;background:transparent;cursor:pointer;color:var(--ink-2)}
.seg-btn.active{background:var(--accent);color:#fff}
.preview-note{font-size:12px;color:var(--muted)}
.frame-wrap{flex:1;overflow:auto;display:flex;justify-content:center;padding:24px;min-height:0}
#previewFrame{
  width:100%;max-width:680px;height:100%;min-height:400px;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  box-shadow:0 8px 30px rgba(20,22,37,.08);
  transition:max-width .35s ease;
}
.frame-wrap.mobile #previewFrame{max-width:375px}

/* ---------- drawer ---------- */
.scrim{position:fixed;inset:0;z-index:90;background:rgba(20,22,37,.45)}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:400px;max-width:94vw;z-index:100;
  background:#fff;box-shadow:-12px 0 40px rgba(20,22,37,.18);
  display:flex;flex-direction:column;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-head h2{font-size:18px}
.drawer-body{overflow-y:auto;padding:16px 20px 30px}
.drawer-body h3{font-size:13px;margin:20px 0 8px;color:var(--ink);text-transform:uppercase;letter-spacing:.06em}
.drawer-body h3:first-child{margin-top:0}
.color-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.color-grid label{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:500;border:1px solid var(--line);border-radius:7px;padding:7px 10px}
.color-grid input[type=color]{width:34px;height:26px;border:0;padding:0;background:none;cursor:pointer}
.logo-row{display:flex;gap:12px;align-items:center}
.logo-preview{width:90px;height:52px;border:1px solid var(--line);border-radius:7px;background:#f6f7fb;display:flex;align-items:center;justify-content:center;overflow:hidden}
.logo-preview img{max-width:100%;max-height:100%;display:block}
.logo-preview span{font-size:11px;color:var(--muted)}
.logo-btns{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.radio-row{display:flex;gap:18px;font-size:13px;margin-bottom:6px}
.radio-row label{display:flex;align-items:center;gap:6px}
.note{font-size:11.5px;color:var(--muted);line-height:1.55;margin:8px 0 0}
.note.warn{color:#8a6d00;background:#fdf6df;border:1px solid #f0e2ac;border-radius:7px;padding:8px 10px}

/* ---------- modals ---------- */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;background:rgba(20,22,37,.5);padding:20px}
.modal-card{
  width:520px;max-width:100%;max-height:88vh;display:flex;flex-direction:column;
  background:#fff;border-radius:14px;box-shadow:0 20px 60px rgba(20,22,37,.3);overflow:hidden;
}
.modal-card.wide{width:760px}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.modal-head h2{font-size:17px}
.modal-body{padding:16px 20px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:12px}
.modal-actions{display:flex;gap:8px}
.picker-top{display:flex;align-items:center;gap:12px}
.picker-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;min-height:40px}
.picker-grid .pick{
  border:2px solid transparent;border-radius:8px;overflow:hidden;cursor:pointer;
  aspect-ratio:4/3;background:#eef0f7;padding:0;
}
.picker-grid .pick img{width:100%;height:100%;object-fit:cover;display:block}
.picker-grid .pick:hover{border-color:var(--accent)}
.picker-empty{grid-column:1/-1;font-size:12px;color:var(--muted)}
.gen-box{border-top:1px solid var(--line);padding-top:12px}
.gen-box h3{font-size:13px;text-transform:uppercase;letter-spacing:.06em}
.gen-box .btn{margin-top:10px}
textarea.code{
  width:100%;height:340px;font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  font-size:11.5px;line-height:1.5;border:1px solid var(--line);border-radius:8px;
  padding:12px;background:#f8f9fc;color:#2a2d3e;resize:vertical;
}

/* ---------- loading + toast ---------- */
.loading{position:fixed;inset:0;z-index:200;background:rgba(255,255,255,.7);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center}
.loading-card{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 24px;box-shadow:0 12px 40px rgba(20,22,37,.15);font-weight:600;font-size:14px}
.spinner{width:20px;height:20px;border:3px solid #e4e6ef;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.toast{
  position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:300;
  display:flex;align-items:center;gap:10px;max-width:90vw;
  background:#1c1f30;color:#fff;font-size:13px;padding:11px 10px 11px 16px;
  border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.3);
}
.toast .icon-btn{color:#aab}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .layout{grid-template-columns:1fr;grid-template-rows:auto auto;overflow:visible}
  body{height:auto}
  .editor{border-right:0;border-bottom:1px solid var(--line);max-height:none}
  .frame-wrap{padding:14px}
  #previewFrame{min-height:70vh}
  .picker-grid{grid-template-columns:repeat(3,1fr)}
  .topbar-actions .btn{padding:8px 10px;font-size:12px}
  .proj-chip{display:none}
}