/* ===== Formbuild design system ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root{
  --bg:#0e1116; --surface:#161b22; --surface-2:#1c232d; --surface-3:#222b36;
  --border:#2a333f; --border-soft:#222a34;
  --text:#e6edf3; --muted:#8b97a7; --faint:#5d6877;
  --accent:#6d83f2; --accent-2:#8a6df2; --accent-soft:#6d83f21a;
  --ok:#3fb950; --danger:#f0596c; --warn:#e3b341;
  --r:14px; --r-sm:10px; --shadow:0 8px 30px rgba(0,0,0,.35);
  --grad:linear-gradient(135deg,#6d83f2,#8a6df2);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);
  font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1{font-size:1.6rem;font-weight:700;letter-spacing:-.02em;margin:0}
h2{font-size:1.2rem;font-weight:600;margin:0}
h3{font-size:1.02rem;font-weight:600;margin:0}
.muted{color:var(--muted)}
.faint{color:var(--faint)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:var(--surface-2);
  color:var(--text);padding:10px 16px;border-radius:var(--r-sm);font:inherit;font-weight:600;cursor:pointer;
  transition:.15s ease;white-space:nowrap}
.btn:hover{border-color:#3a4654;transform:translateY(-1px)}
.btn-primary{background:var(--grad);border:none;color:#fff;box-shadow:0 6px 18px -6px var(--accent)}
.btn-primary:hover{filter:brightness(1.07)}
.btn-ghost{background:transparent}
.btn-block{width:100%;justify-content:center;margin-top:8px}
.btn-sm{padding:7px 12px;font-size:.85rem}
.btn:disabled{opacity:.5;cursor:default;transform:none}

/* ===== Auth ===== */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;
  background:radial-gradient(1200px 600px at 50% -10%,#1a2438 0%,var(--bg) 60%)}
.auth-card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);padding:32px;box-shadow:var(--shadow)}
.auth-card h1{font-size:1.35rem;margin-bottom:4px}
.auth-card p{margin:0 0 18px}
.auth-card form{display:flex;flex-direction:column;gap:14px;margin-top:18px}
label{display:flex;flex-direction:column;gap:6px;font-size:.85rem;font-weight:600;color:var(--muted)}
input,select,textarea{font:inherit;background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  padding:11px 13px;border-radius:var(--r-sm);width:100%;outline:none;transition:.15s}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.alert{background:#f0596c1a;border:1px solid #f0596c55;color:#ffb3bd;padding:10px 13px;border-radius:var(--r-sm);font-size:.88rem}

/* brand */
.brand{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.brand-mark{width:42px;height:42px;border-radius:11px;background:var(--grad);display:grid;place-items:center;
  font-size:22px;color:#fff;font-weight:700}
.brand-mark.sm{width:30px;height:30px;font-size:16px;border-radius:8px}
.brand-name{font-weight:700;letter-spacing:-.01em}
.brand-sub{font-size:.78rem;color:var(--muted)}
.brand.sm{flex-direction:row}

/* topbar */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;
  padding:12px 22px;background:rgba(14,17,22,.8);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}

/* ===== Dashboard ===== */
.page{max-width:1100px;margin:0 auto;padding:32px 22px 80px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:18px;
  display:flex;flex-direction:column;gap:10px;transition:.18s;position:relative}
.form-card:hover{border-color:#3a4654;transform:translateY(-3px);box-shadow:var(--shadow)}
.form-card-top{display:flex;align-items:center;justify-content:space-between}
.form-icon{font-size:24px}
.badge{font-size:.72rem;background:var(--surface-3);color:var(--muted);padding:3px 9px;border-radius:99px;font-weight:600}
.form-meta{font-size:.78rem;color:var(--faint)}
.form-card-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px;border-top:1px solid var(--border-soft);padding-top:12px}
.chip{font-size:.78rem;font-weight:600;border:1px solid var(--border);background:var(--surface-2);color:var(--muted);
  padding:5px 10px;border-radius:8px;cursor:pointer;transition:.15s}
.chip:hover{color:var(--text);border-color:#3a4654}
.chip.danger:hover{color:#fff;background:var(--danger);border-color:var(--danger)}
.empty{text-align:center;padding:80px 20px;background:var(--surface);border:1px dashed var(--border);border-radius:var(--r)}
.empty-art{font-size:42px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:10px}
.empty h2{margin-bottom:6px}.empty p{margin:0 0 18px}

/* ===== Builder layout (3 columns) ===== */
.builder-top{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:14px;
  padding:11px 18px;background:rgba(14,17,22,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.builder-top .title-input{background:transparent;border:1px solid transparent;font-size:1.05rem;font-weight:600;
  padding:8px 10px;max-width:420px;width:auto;flex:1}
.builder-top .title-input:hover{border-color:var(--border)}
.builder-top .title-input:focus{border-color:var(--accent);background:var(--surface-2)}
.builder-top .spacer{flex:1}
.save-state{font-size:.8rem;color:var(--muted);min-width:90px;text-align:right}

.builder{display:grid;grid-template-columns:280px 1fr 320px;gap:0;height:calc(100vh - 57px)}
.col{overflow-y:auto;height:100%}
.col-palette{background:var(--surface);border-right:1px solid var(--border);padding:18px}
.col-canvas{padding:30px 26px 120px;background:radial-gradient(800px 400px at 50% -5%,#151b25,var(--bg))}
.col-props{background:var(--surface);border-left:1px solid var(--border);padding:18px}

.palette-group{margin-bottom:22px}
.palette-group h4{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);margin:0 0 10px}
.palette-item{display:flex;align-items:center;gap:11px;padding:10px 11px;border:1px solid var(--border);
  background:var(--surface-2);border-radius:var(--r-sm);margin-bottom:8px;cursor:grab;transition:.15s;user-select:none}
.palette-item:hover{border-color:var(--accent);background:var(--surface-3);transform:translateX(2px)}
.palette-item:active{cursor:grabbing}
.palette-item .pi-icon{width:30px;height:30px;border-radius:8px;background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;font-size:15px;flex-shrink:0}
.palette-item .pi-text strong{display:block;font-size:.86rem;font-weight:600}
.palette-item .pi-text span{font-size:.74rem;color:var(--faint);line-height:1.25;display:block}

/* canvas */
.canvas-form{max-width:680px;margin:0 auto;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);padding:26px;min-height:200px}
.canvas-empty{border:2px dashed var(--border);border-radius:var(--r);padding:60px 20px;text-align:center;color:var(--faint)}
.drop-zone{height:14px;border-radius:6px;transition:.12s;margin:2px 0}
.drop-zone.over{height:42px;background:var(--accent-soft);border:1px dashed var(--accent)}

.el{position:relative;border:1px solid transparent;border-radius:var(--r-sm);padding:12px 12px 12px;margin:2px 0;transition:.12s;cursor:pointer}
.el:hover{border-color:var(--border)}
.el.selected{border-color:var(--accent);background:var(--accent-soft)}
.el.dragging{opacity:.4}
.el .el-label{font-size:.9rem;font-weight:600;margin-bottom:7px;display:flex;align-items:center;gap:6px}
.el .req{color:var(--danger)}
.el .el-cond{font-size:.7rem;color:var(--warn);margin-top:7px;display:flex;align-items:center;gap:5px}
.el .el-tools{position:absolute;top:6px;right:6px;display:none;gap:4px}
.el:hover .el-tools,.el.selected .el-tools{display:flex}
.el-tools button{width:26px;height:26px;border-radius:7px;border:1px solid var(--border);background:var(--surface);
  color:var(--muted);cursor:pointer;font-size:13px;display:grid;place-items:center}
.el-tools button:hover{color:var(--text);border-color:#3a4654}
.el-tools button.del:hover{background:var(--danger);color:#fff;border-color:var(--danger)}
.el .drag-handle{cursor:grab}

/* field preview look */
.fld{pointer-events:none}
.fld input,.fld select,.fld textarea{background:var(--bg)}
.heading-prev{font-size:1.25rem;font-weight:700;letter-spacing:-.01em;border-bottom:1px solid var(--border);padding-bottom:8px}
.info-prev{color:var(--muted);font-size:.92rem}
.break-prev{border:none;border-top:1px solid var(--border);margin:6px 0}
.img-prev img{max-width:100%;border-radius:var(--r-sm);display:block}
.img-placeholder{border:2px dashed var(--border);border-radius:var(--r-sm);padding:30px;text-align:center;color:var(--faint)}

/* props panel */
.props-empty{color:var(--faint);text-align:center;padding:40px 10px;font-size:.9rem}
.prop-block{margin-bottom:16px}
.prop-block > label{margin-bottom:0}
.props h4{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);margin:0 0 14px}
.props-type{font-size:.78rem;color:var(--accent);font-weight:600;margin-bottom:14px}
.switch-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;border-top:1px solid var(--border-soft)}
.switch-row span{font-size:.86rem;font-weight:600}
.switch{position:relative;width:42px;height:24px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:var(--surface-3);border-radius:99px;cursor:pointer;transition:.2s}
.slider:before{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked + .slider{background:var(--accent)}
.switch input:checked + .slider:before{transform:translateX(18px)}
.opt-row{display:flex;gap:6px;margin-bottom:6px}
.opt-row input{flex:1}
.opt-row button{background:var(--surface-2);border:1px solid var(--border);color:var(--muted);border-radius:8px;width:38px;cursor:pointer}
.opt-row button:hover{color:#fff;background:var(--danger);border-color:var(--danger)}
.cond-box{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);padding:12px;margin-top:8px}
.hint{font-size:.76rem;color:var(--faint);margin-top:6px}
.divider{height:1px;background:var(--border);margin:18px 0}

/* ===== Fill page ===== */
.fill-wrap{max-width:640px;margin:0 auto;padding:40px 20px 80px}
.fill-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:30px;box-shadow:var(--shadow)}
.fill-card h1{margin-bottom:24px}
.fill-field{margin-bottom:20px}
.fill-field > label{font-size:.92rem;color:var(--text);margin-bottom:8px}
.fill-field .req{color:var(--danger)}
.checkbox-list{display:flex;flex-direction:column;gap:8px}
.checkbox-list label{flex-direction:row;align-items:center;gap:9px;font-weight:500;color:var(--text)}
.checkbox-list input{width:auto}
.fill-success{text-align:center;padding:50px 20px}
.fill-success .big{font-size:46px;color:var(--ok);margin-bottom:10px}
.field-err{color:var(--danger);font-size:.8rem;margin-top:5px;display:none}
.fill-field.invalid .field-err{display:block}
.fill-field.invalid input,.fill-field.invalid select,.fill-field.invalid textarea{border-color:var(--danger)}
.powered{text-align:center;margin-top:20px;font-size:.78rem;color:var(--faint)}

/* submissions */
.sub-table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.sub-table th,.sub-table td{text-align:left;padding:11px 13px;border-bottom:1px solid var(--border-soft);font-size:.88rem;vertical-align:top}
.sub-table th{background:var(--surface-2);color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.05em}
.sub-table tr:last-child td{border-bottom:none}

@media(max-width:980px){
  .builder{grid-template-columns:1fr;height:auto}
  .col{height:auto;overflow:visible}
  .col-palette,.col-props{border:none;border-bottom:1px solid var(--border)}
  .col-props{order:3}
}