/* ═══════════════════════════════════════════
   Thiệp Builder V2 — Editor CSS v0.9
   90% Canva-quality
   ═══════════════════════════════════════════ */
:root{
  --topbar-h:70px;--icon-w:64px;--panel-w:280px;--strip-h:0px;
  --bg:#0d0d10;--surface:#141418;--surface2:#1c1c22;--surface3:#26262e;
  --border:rgba(255,255,255,.08);--accent:#e8619d;--accent2:#d4548b;
  --text:#e4e4ea;--text2:#6e6e7a;--radius:6px;
  --snap:#00d4ff;--snap-glow:rgba(0,212,255,.25);
  --font:-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);overflow:hidden}

/* ── TOPBAR ─────────────────────────── */
/* V2 topbar hidden — V1 PHP topbar is used instead */
#tbv2-topbar{display:none!important}
/* Undo/Redo buttons in V1 topbar */
.tb-undo-redo{display:flex;align-items:center;gap:2px;margin-left:12px}
.tb-undo-redo button{background:none;border:1px solid rgba(255,255,255,.15);color:#fff;width:32px;height:32px;border-radius:6px;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:.15s}
.tb-undo-redo button:hover:not(:disabled){background:rgba(255,255,255,.1)}
.tb-undo-redo button:disabled{opacity:.25;cursor:not-allowed}
.tb-brand{font-size:18px;margin-right:4px;cursor:pointer}
.tb-sep{width:1px;height:20px;background:var(--border);margin:0 4px}
.tb-btn{height:30px;padding:0 10px;border-radius:var(--radius);border:none;font-size:12px;font-weight:500;cursor:pointer;background:var(--surface2);color:var(--text);transition:.12s;white-space:nowrap}
.tb-btn:hover{background:var(--surface3)}
.tb-btn.icon{padding:0 8px;font-size:14px}
.tb-btn.primary{background:var(--accent);color:#fff}
.tb-btn.primary:hover{background:var(--accent2)}
.tb-btn:disabled{opacity:.35;cursor:not-allowed}
#tbv2-status{margin-left:auto;font-size:11px;color:var(--text2)}

/* ── LAYOUT ─────────────────────────── */
#tbv2-layout{display:flex;height:100%;transition:height .2s ease}

/* ── ICON BAR ───────────────────────── */
#tbv2-icon-bar{width:var(--icon-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;padding:8px 0;gap:2px;overflow:hidden}
.ib-item{width:56px;height:56px;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;color:var(--text2);transition:.15s;border:none;background:none;font-family:var(--font)}
.ib-item:hover{background:var(--surface2);color:var(--text)}
.ib-item.active{background:var(--surface2);color:var(--accent)}
.ib-icon{font-size:20px;line-height:1}.ib-label{font-size:9px;letter-spacing:.3px}

/* ── SUB PANEL ──────────────────────── */
#tbv2-sub-panel{width:0;overflow:hidden;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);transition:width .2s ease;display:flex;flex-direction:column}
#tbv2-sub-panel.open{width:260px}
#tbv2-sub-inner{width:260px;padding:10px;padding-bottom:40px;overflow-y:auto;overflow-x:hidden;height:100%;box-sizing:border-box}
.sub-title{font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text2);margin-bottom:8px;font-weight:600}
.sub-btn{width:100%;height:36px;border-radius:var(--radius);background:var(--surface2);border:1px solid var(--border);color:var(--text);font-size:12px;cursor:pointer;transition:.12s;text-align:left;padding:0 10px;margin-bottom:4px;display:flex;align-items:center;gap:6px}
.sub-btn:hover{background:var(--surface3);border-color:var(--accent)}

/* ── TEMPLATE ITEM (V1-style thumbnails) ── */
.tpl-item{border-radius:10px;overflow:hidden;cursor:pointer;border:2px solid transparent;transition:border-color .2s;background:var(--surface2)}
.tpl-item:hover{border-color:var(--accent)}
.tpl-item.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}

/* ── TOPBAR BTN OUTLINE ── */
.tb-btn.outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.tb-btn.outline:hover{border-color:var(--accent);color:var(--accent)}

/* ── CANVAS ─────────────────────────── */
#tbv2-canvas-area{flex:1;background:#08080b;position:relative;overflow:hidden;display:flex;align-items:stretch;justify-content:center}
#tbv2-canvas-wrap{position:relative;flex-shrink:0;transform-origin:top center;width:420px;height:100%}
#tbv2-iframe{width:100%;height:100%;border:none;background:#000;display:block;box-shadow:0 4px 24px rgba(0,0,0,.5)}

/* ── OVERLAY (unused in V2 — kept for compat) ── */
#tbv2-overlay{display:none}

/* ── PERSISTENT SELECTION BOX (reused, not recreated) ── */
#sel-box{
  position:absolute;pointer-events:none;z-index:20;
  border:2px solid var(--accent);border-radius:2px;
  display:none;
  /* No transition during drag — raw performance */
}
#sel-box.visible{display:block}
#sel-box.animate{transition:left .08s,top .08s,width .08s,height .08s}

/* ── HOVER BOX ──────────────────────── */
#hover-box{
  position:absolute;pointer-events:none;z-index:15;
  border:1.5px dashed rgba(232,97,157,.4);border-radius:2px;
  display:none;transition:all .06s ease-out;
}
#hover-box.visible{display:block}

/* ── RESIZE HANDLES (persistent, repositioned) ── */
.rh{
  position:absolute;width:10px;height:10px;
  background:#fff;border:2px solid var(--accent);
  border-radius:50%;z-index:30;pointer-events:auto !important;
  display:none;transition:transform .08s;
  box-shadow:0 1px 4px rgba(0,0,0,.4);
}
.rh.visible{display:block}
.rh:hover{transform:scale(1.3)}
.rh-nw{cursor:nw-resize}.rh-n{cursor:n-resize}
.rh-ne{cursor:ne-resize}.rh-e{cursor:e-resize}
.rh-se{cursor:se-resize}.rh-s{cursor:s-resize}
.rh-sw{cursor:sw-resize}.rh-w{cursor:w-resize}

/* ── ROTATION HANDLE ────────────────── */
#rot-handle{
  position:absolute;width:20px;height:20px;
  background:var(--accent);border-radius:50%;
  z-index:30;pointer-events:auto !important;display:none;
  cursor:grab;
  box-shadow:0 2px 6px rgba(0,0,0,.5);
  display:none;
}
#rot-handle.visible{display:flex;align-items:center;justify-content:center}
#rot-handle::after{content:'↻';color:#fff;font-size:11px}
#rot-line{position:absolute;width:1px;background:var(--accent);z-index:25;display:none;pointer-events:none}
#rot-line.visible{display:block}

/* ── SNAP GUIDES ────────────────────── */
.snap-guide{
  position:absolute;z-index:25;pointer-events:none;
  background:var(--snap);
  box-shadow:0 0 4px var(--snap-glow);
}
.snap-guide-h{height:1px;left:0;width:100%}
.snap-guide-v{width:1px;top:0;height:100%}
.snap-label{
  position:absolute;background:var(--snap);color:#000;
  font-size:9px;padding:1px 4px;border-radius:2px;
  pointer-events:none;z-index:26;font-weight:600;
}

/* ── FLOAT TOOLBAR ──────────────────── */
#tbv2-float-bar{display:none;position:fixed;z-index:900;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:3px;gap:2px;box-shadow:0 8px 24px rgba(0,0,0,.5);align-items:center}
#tbv2-float-bar.visible{display:flex}
.fb-btn{width:30px;height:30px;border:none;background:none;color:var(--text2);cursor:pointer;border-radius:4px;font-size:14px;display:flex;align-items:center;justify-content:center;transition:.12s}
.fb-btn:hover{background:var(--surface2);color:var(--text)}
.fb-sep{width:1px;height:18px;background:var(--border);margin:0 1px}

/* ── ZOOM BAR ───────────────────────── */
#tbv2-zoom-bar{position:fixed;bottom:calc(var(--strip-h) + 16px);left:calc(var(--icon-w) + 16px);display:flex;align-items:center;gap:3px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:3px 6px;z-index:200}
.tbv2-zoom-btn{width:24px;height:24px;border:none;background:none;color:var(--text);font-size:14px;cursor:pointer;border-radius:4px}
.tbv2-zoom-btn:hover{background:var(--surface2)}
#tbv2-zoom-label{font-size:11px;color:var(--text2);min-width:36px;text-align:center}

/* ── RIGHT PANEL ────────────────────── */
#tbv2-panel{width:var(--panel-w);flex-shrink:0;background:var(--surface);border-left:1px solid var(--border);overflow-y:auto;display:flex;flex-direction:column}
#tbv2-panel-placeholder{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}
#tbv2-panel-body{padding:14px}
.tb-panel-title{font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text2);margin-bottom:10px}
.tb-panel-hint{font-size:11px;color:var(--text2);font-style:italic;margin-bottom:12px}

.tb-section{margin-bottom:2px}
.tb-section-header{display:flex;align-items:center;gap:8px;padding:10px 0;cursor:pointer;border-bottom:1px solid var(--border);font-size:13px;color:var(--text)}
.tb-section-header:hover{color:var(--accent)}
.tb-section-header .tb-chevron{margin-left:auto;font-size:10px;opacity:.5;transition:transform .2s}
.tb-section-header.open .tb-chevron{transform:rotate(180deg)}
.tb-section-body{overflow:hidden;max-height:0;transition:max-height .25s ease;padding:0}
.tb-section-body.open{max-height:800px;padding:10px 0}

.tb-prop-row{margin-bottom:9px}
.tb-prop-row label{font-size:11px;color:var(--text2);display:block;margin-bottom:3px}
.tb-prop-row input,.tb-prop-row select{width:100%;background:var(--surface2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius);padding:6px 8px;font-size:12px;outline:none;font-family:var(--font);transition:border-color .12s}
.tb-prop-row input:focus,.tb-prop-row select:focus{border-color:var(--accent)}
.tb-prop-row input[type=color]{height:32px;padding:2px 3px;cursor:pointer}
.tb-prop-row input[type=range]{padding:0;background:none;border:none}
.tb-prop-row-2{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:9px}
.tb-prop-row-2 .tb-prop-row{margin-bottom:0}
.tb-sep-line{height:1px;background:var(--border);margin:12px 0}

.tb-text-toolbar{display:flex;gap:2px;margin-bottom:10px;flex-wrap:wrap}
.tb-text-btn{width:32px;height:32px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.12s;font-weight:bold}
.tb-text-btn:hover{border-color:var(--accent);background:var(--surface3)}
.tb-text-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}

.tb-fontsize-row{display:flex;align-items:center;gap:4px;margin-bottom:10px}
.tb-fontsize-row label{font-size:11px;color:var(--text2);min-width:60px}
.tb-fontsize-btn{width:28px;height:28px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.tb-fontsize-btn:hover{border-color:var(--accent)}
.tb-fontsize-val{width:48px;text-align:center;background:var(--surface2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius);padding:4px;font-size:12px}

.tb-img-actions{display:flex;gap:6px;margin-bottom:10px}
.tb-img-action-btn{flex:1;height:36px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:4px;transition:.12s}
.tb-img-action-btn:hover{border-color:var(--accent);background:var(--surface3)}

.tb-del-btn{width:100%;height:32px;background:rgba(220,50,50,.12);border:1px solid rgba(220,50,50,.25);color:#e06060;border-radius:var(--radius);font-size:12px;cursor:pointer}
.tb-del-btn:hover{background:rgba(220,50,50,.2)}

/* ── CROP MODAL ─────────────────────── */
#crop-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.85);backdrop-filter:blur(4px);z-index:2000;flex-direction:column;align-items:center;justify-content:center}
#crop-modal.active{display:flex}
#crop-canvas{border-radius:6px;cursor:crosshair;max-width:80vw;max-height:60vh}
#crop-toolbar{margin-top:14px;display:flex;gap:8px}
#crop-info{color:var(--text2);font-size:11px;margin-top:6px}

/* ── IMAGE STRIP ────────────────────── */
#tbv2-image-strip{position:fixed;bottom:0;left:var(--icon-w);right:0;height:0;overflow:hidden;background:var(--surface);border-top:1px solid var(--border);z-index:500;transition:height .2s ease;display:flex;flex-direction:column}
#tbv2-image-strip.active{height:90px}
@media(max-width:767px){#tbv2-image-strip{bottom:64px;left:0}#tbv2-image-strip.active{height:80px}}
.strip-header{display:flex;align-items:center;justify-content:space-between;padding:4px 12px 2px;flex-shrink:0}
.strip-header span{font-size:10px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px}
.strip-close{background:none;border:none;color:var(--text2);cursor:pointer;font-size:14px;padding:2px 4px;border-radius:4px}
.strip-close:hover{background:var(--surface2);color:var(--text)}
.strip-scroll{flex:1;display:flex;gap:6px;overflow-x:auto;overflow-y:hidden;padding:0 12px 6px;align-items:center}
.strip-scroll::-webkit-scrollbar{height:3px}
.strip-scroll::-webkit-scrollbar-thumb{background:var(--surface3);border-radius:3px}
.strip-thumb{width:54px;height:54px;flex-shrink:0;border-radius:5px;overflow:hidden;cursor:pointer;border:2px solid transparent;transition:.12s}
.strip-thumb:hover{border-color:var(--accent);transform:scale(1.05)}
.strip-thumb.strip-upload{background:var(--surface2);border:2px dashed var(--border);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text2)}
.strip-thumb.strip-upload:hover{border-color:var(--accent);color:var(--accent)}
.strip-thumb img{width:100%;height:100%;object-fit:cover;display:block}

/* ── SCROLLBAR ──────────────────────── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-thumb{background:var(--surface3);border-radius:4px}
::-webkit-scrollbar-track{background:transparent}

/* ── TEMPLATE LIST (inside sub-panel) ── */
.tpl-item{margin-bottom:0}

/* Effects tab */
.eff-btn{width:100%;padding:6px 8px;border-radius:var(--radius);background:var(--surface2);border:1px solid var(--border);color:var(--text);font-size:11px;cursor:pointer;text-align:left;transition:.12s;margin-bottom:2px}
.eff-btn:hover{background:var(--surface3);border-color:var(--accent)}
.eff-btn.active{background:rgba(232,97,157,.18);border-color:var(--accent);color:var(--accent);font-weight:600}
/* Intro effect cards */
.eff-intro-card{transition:.15s;user-select:none}
.eff-intro-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(232,97,157,.2)}
.eff-intro-card.active{box-shadow:0 0 0 2px var(--accent),0 4px 12px rgba(232,97,157,.25)}