/* ═══════════════════════════════════════════
   Section Studio — Builder UI Styles
═══════════════════════════════════════════ */
:root{
  --bg:#111114;--panel:#18181c;--pane:#1c1c20;--muted:#222228;--hover:#2a2a30;
  --border:rgba(255,255,255,.07);--border2:rgba(255,255,255,.12);
  --text:#f0eff0;--mtext:#8a8a95;--dim:#4e4e58;
  --acc:#fe492c;--acc-bg:rgba(254,73,44,.1);--acc-bdr:rgba(254,73,44,.3);
  --ok:#22c55e;
  --font:'Geist',-apple-system,system-ui,sans-serif;
  --mono:'Geist Mono','SF Mono',monospace;
  --serif:'Instrument Serif',Georgia,serif;
  --sw:260px;--th:54px;--iw:296px;--cw:380px;
  --r:7px;--rs:4px;--rl:14px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font);font-size:13.5px;line-height:1.5;display:flex;-webkit-font-smoothing:antialiased}
::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#2a2a38;border-radius:99px}
button{cursor:pointer;font-family:inherit;font-size:inherit;background:none;border:none;color:inherit}
a{color:inherit;text-decoration:none}
/* ─── SIDEBAR ─── */
.sidebar{width:var(--sw);flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;height:100vh;overflow-y:auto;overflow-x:hidden}
.s-brand{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--border)}
.s-brand-icon{width:34px;height:34px;background:var(--muted);border-radius:var(--rs);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text)}
.s-brand-name{font-family:var(--serif);font-style:italic;font-size:15px;letter-spacing:-.01em}
.s-brand-sub{font-family:var(--mono);font-size:9px;letter-spacing:.08em;color:var(--dim);text-transform:uppercase;margin-top:1px}
.s-label{padding:14px 16px 7px;font-family:var(--mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.s-nav{padding:0 9px 6px}
.s-nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:var(--rs);color:var(--mtext);font-size:13px;font-weight:500;text-align:left;transition:background .15s,color .15s;margin-bottom:1px}
.s-nav-item:hover{background:var(--hover);color:var(--text)}
.s-nav-item.active{background:var(--text);color:#111}
.s-nav-icon{font-size:13px;width:18px;text-align:center}
/* Animation chips */
.s-anim-grid{padding:0 9px 10px;display:grid;grid-template-columns:1fr 1fr;gap:3px}
.s-anim{display:flex;align-items:center;gap:5px;padding:5px 8px;border-radius:var(--rs);border:1px solid var(--border);color:var(--mtext);font-size:11px;font-weight:500;transition:all .14s;text-align:left;font-family:var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.s-anim:hover{border-color:var(--border2);color:var(--text);background:var(--hover)}
.s-anim.active{border-color:var(--acc-bdr);background:var(--acc-bg);color:var(--text)}
.s-anim-dot{width:5px;height:5px;border-radius:50%;background:var(--dim);flex-shrink:0;transition:background .15s}
.s-anim.active .s-anim-dot{background:var(--acc)}
.s-footer{margin-top:auto;padding:14px 16px;border-top:1px solid var(--border);display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:10px;color:var(--dim)}
.s-status-dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(34,197,94,.12);animation:blink 2s ease-in-out infinite;flex-shrink:0}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}
/* ─── MAIN ─── */
.main{flex:1;display:flex;flex-direction:column;height:100vh;overflow:hidden;min-width:0}
.topbar{height:var(--th);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 18px;gap:16px;flex-shrink:0;background:var(--panel)}
.tb-left{min-width:100px}
.tb-crumb{font-family:var(--serif);font-style:italic;font-size:17px;opacity:.92}
.tb-meta{flex:1;display:flex;justify-content:center;gap:6px;flex-wrap:wrap}
.tb-pill{display:inline-flex;align-items:center;padding:3px 10px;background:var(--muted);border:1px solid var(--border);border-radius:999px;font-family:var(--mono);font-size:10px;color:var(--mtext);white-space:nowrap}
.tb-pill.fresh{border-color:var(--acc-bdr);background:var(--acc-bg);color:var(--text)}
.tb-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.seed-wrap{display:flex;align-items:center;gap:6px;padding:4px 10px;background:var(--muted);border:1px solid var(--border);border-radius:var(--rs)}
.seed-lbl{font-family:var(--mono);font-size:9px;color:var(--dim);text-transform:uppercase;letter-spacing:.08em}
.seed-val{font-family:var(--mono);font-size:10px;color:var(--acc);cursor:pointer;max-width:70px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.seed-lock{font-size:13px;padding:0;background:none;border:none;cursor:pointer;line-height:1}
.vp-row{display:flex;background:var(--muted);border:1px solid var(--border);border-radius:var(--rs);padding:2px;gap:2px}
.vp{width:28px;height:26px;border-radius:3px;color:var(--dim);display:flex;align-items:center;justify-content:center;transition:all .14s;font-size:14px}
.vp:hover{color:var(--text);background:var(--hover)}
.vp.active{background:var(--panel);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.3)}
.btn-gen{display:flex;align-items:center;gap:7px;padding:8px 18px;background:var(--acc);color:#fff;border-radius:var(--rs);font-size:13px;font-weight:600;transition:all .15s}
.btn-gen:hover{opacity:.9;box-shadow:0 0 0 3px rgba(254,73,44,.25)}
.btn-gen:active{transform:scale(.97)}
/* ─── WORKSPACE ─── */
.workspace{flex:1;display:grid;grid-template-columns:var(--iw) 1fr var(--cw);overflow:hidden;min-height:0}
.pane{display:flex;flex-direction:column;overflow:hidden}
.pane-inputs{border-right:1px solid var(--border);background:var(--panel)}
.pane-preview{background:var(--bg)}
.pane-code{border-left:1px solid var(--border);background:var(--panel)}
.pane-head{height:42px;padding:0 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;background:var(--panel)}
.pane-head-code{padding:0 10px}
.ph-title{font-family:var(--mono);font-size:9.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--dim);display:flex;align-items:center;gap:8px}
.ph-badge{font-family:var(--mono);font-size:10px;padding:2px 8px;background:var(--muted);border-radius:999px;color:var(--mtext)}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--ok);animation:blink 2s ease-in-out infinite;flex-shrink:0}
/* ─── FORM ─── */
.pane-body{flex:1;overflow-y:auto;padding:14px}
.form-grp{margin-bottom:18px}
.form-grp-title{font-family:var(--mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);margin-bottom:10px;padding-bottom:7px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:6px}
.form-grp-title::before{content:"";width:3px;height:10px;background:var(--acc);border-radius:2px;flex-shrink:0}
.form-field{margin-bottom:9px}
.form-label{display:block;font-size:11px;font-weight:500;color:var(--mtext);margin-bottom:4px}
.form-input,.form-textarea,.form-select{width:100%;padding:7px 10px;background:var(--muted);border:1px solid var(--border);border-radius:var(--rs);color:var(--text);font-family:inherit;font-size:12.5px;outline:none;transition:border-color .15s}
.form-input::placeholder,.form-textarea::placeholder{color:var(--dim)}
.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--acc)}
.form-textarea{resize:vertical;min-height:60px;line-height:1.5}
.form-select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'><polyline points='6 9 12 15 18 9'/></svg>");background-repeat:no-repeat;background-position:right 9px center;padding-right:26px}
.color-row{display:flex;align-items:center;gap:7px;padding:4px 8px 4px 4px;background:var(--muted);border:1px solid var(--border);border-radius:var(--rs);transition:border-color .15s}
.color-row:focus-within{border-color:var(--acc)}
.color-swatch{width:26px;height:26px;border-radius:3px;border:none;cursor:pointer;padding:0;overflow:hidden;flex-shrink:0}
.color-swatch::-webkit-color-swatch-wrapper{padding:0}.color-swatch::-webkit-color-swatch{border:none}
.color-hex{flex:1;background:none;border:none;outline:none;font-family:var(--mono);font-size:11.5px;color:var(--text);text-transform:uppercase;min-width:0}
.item-card{padding:10px;background:var(--muted);border-radius:var(--rs);border:1px solid var(--border);margin-bottom:2px}
.item-hdr{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.item-badge{width:20px;height:20px;border-radius:50%;background:var(--acc);color:#fff;font-family:var(--mono);font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.item-name{font-family:var(--mono);font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:var(--mtext)}
.loading-msg{padding:40px 16px;text-align:center;font-family:var(--mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--dim)}
/* ─── PREVIEW ─── */
.preview-stage{flex:1;display:flex;align-items:center;justify-content:center;padding:18px;overflow:auto;position:relative;background:repeating-linear-gradient(45deg,transparent,transparent 18px,rgba(255,255,255,.012) 18px,rgba(255,255,255,.012) 36px),var(--bg)}
.preview-iframe{width:100%;height:100%;background:#fff;border:none;border-radius:var(--rl);box-shadow:0 24px 72px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.05);transition:max-width .3s cubic-bezier(.4,0,.2,1);display:block}
.preview-stage[data-vp="tablet"] .preview-iframe{max-width:768px}
.preview-stage[data-vp="mobile"] .preview-iframe{max-width:390px}
.preview-spin{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--bg);z-index:10;opacity:0;pointer-events:none;transition:opacity .2s;font-family:var(--mono);font-size:10px;color:var(--mtext);letter-spacing:.1em;text-transform:uppercase}
.preview-spin.show{opacity:1}
.spin-ring{width:28px;height:28px;border:2px solid var(--border2);border-top-color:var(--acc);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
/* ─── CODE PANEL ─── */
.code-tabs{display:flex;gap:2px}
.code-tab{padding:5px 12px;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--dim);border-radius:var(--rs);transition:all .14s}
.code-tab:hover{color:var(--text);background:var(--muted)}
.code-tab.active{background:var(--muted);color:var(--text)}
.copy-btn{display:flex;align-items:center;gap:5px;padding:4px 11px;border:1px solid var(--border);border-radius:var(--rs);color:var(--mtext);font-family:var(--mono);font-size:10.5px;transition:all .14s}
.copy-btn:hover{color:var(--text);border-color:var(--border2);background:var(--muted)}
.code-body{flex:1;background:#0d0d10;position:relative;overflow:hidden}
.code-pane{position:absolute;inset:0;padding:14px 16px;overflow:auto;font-family:var(--mono);font-size:11.5px;line-height:1.75;color:#bfc8d9;white-space:pre;tab-size:2;display:none}
.code-pane.active{display:block}
.code-pane code{font-family:inherit;color:inherit;display:block}
.export-bar{padding:9px 12px;border-top:1px solid var(--border);display:flex;gap:6px;background:var(--panel);flex-shrink:0}
.export-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:6px 10px;border:1px solid var(--border);border-radius:var(--rs);color:var(--mtext);font-family:var(--mono);font-size:10.5px;transition:all .14s}
.export-btn:hover{color:var(--text);border-color:var(--border2);background:var(--muted)}
/* ─── TOAST ─── */
.toast{position:fixed;bottom:22px;right:22px;display:flex;align-items:center;gap:8px;padding:10px 18px;background:#1e1e26;border:1px solid var(--border2);border-radius:var(--r);font-size:13px;font-weight:500;color:var(--text);box-shadow:0 12px 40px rgba(0,0,0,.4);opacity:0;transform:translateY(10px);pointer-events:none;transition:all .3s;z-index:9999}
.toast.show{opacity:1;transform:translateY(0)}
/* ─── RESPONSIVE ─── */
@media(max-width:1300px){:root{--cw:340px}}
@media(max-width:1100px){:root{--iw:260px}}
@media(max-width:900px){
  html,body{overflow:auto;flex-direction:column;height:auto}
  .sidebar{width:100%;height:auto;flex-direction:row;flex-wrap:wrap;overflow:visible}
  .main{height:auto;overflow:visible}
  .workspace{grid-template-columns:1fr;overflow:visible}
  .pane{max-height:400px}
  .preview-stage{min-height:350px}
}