:root{
  --bg:#080A10;--surface:#0F111A;--surface-2:#161824;--surface-3:#1E2130;
  --border:#252840;--border-hi:#353860;
  --accent:#9D4EDD;--accent-dim:rgba(157,78,221,0.14);--accent-text:#C77DFF;
  --accent2:#00C6FF;--accent2-dim:rgba(0,198,255,0.1);
  --sel-bg:rgba(157,78,221,0.12);
  --text-1:#F0EDFF;--text-2:#7876A0;--text-3:#3A3860;
  --success:#00E5A0;--danger:#FF4D6D;
  --r:8px;--r-sm:5px;--r-lg:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text-1);font-family:'Space Grotesk',sans-serif;min-height:100vh;font-size:14px}
/* HEADER */
.header{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 20px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}
.header-logo{display:flex;align-items:center;gap:10px}
.header-logo .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px}
.header-logo h1{font-size:16px;font-weight:700;letter-spacing:-0.3px}
.header-logo span{font-size:11px;color:var(--text-2);margin-left:4px}
.anti-ai-wrap{display:flex;align-items:center;gap:10px}
.anti-ai-label{font-size:12px;color:var(--text-2)}
.toggle-switch{position:relative;width:40px;height:22px;cursor:pointer}
.toggle-switch input{opacity:0;width:0;height:0}
.toggle-track{position:absolute;inset:0;background:var(--surface-3);border:1px solid var(--border);border-radius:11px;transition:.2s}
.toggle-switch input:checked~.toggle-track{background:var(--accent);border-color:var(--accent)}
.toggle-thumb{position:absolute;top:3px;left:3px;width:14px;height:14px;background:#fff;border-radius:50%;transition:.2s}
.toggle-switch input:checked~.toggle-track .toggle-thumb{transform:translateX(18px)}
/* TABS */
.tab-bar{background:var(--surface);border-bottom:1px solid var(--border);display:flex;padding:0 20px;position:sticky;top:61px;z-index:99}
.tab-btn{padding:12px 18px;font-size:13px;font-weight:500;color:var(--text-2);cursor:pointer;border:none;background:none;border-bottom:2px solid transparent;transition:.15s;white-space:nowrap}
.tab-btn.active{color:var(--accent-text);border-bottom-color:var(--accent)}
.tab-btn:hover:not(.active){color:var(--text-1)}
/* MAIN */
.main{max-width:900px;margin:0 auto;padding:24px 16px 60px}
.tab-content{display:none}
.tab-content.active{display:block}
/* SECTION */
.section{margin-bottom:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden}
.section-header{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none}
.section-header:hover{background:var(--surface-2)}
.section-title{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text-2)}
.section-num{color:var(--accent);font-family:'Space Mono',monospace;font-size:11px}
.section-body{padding:14px 16px;border-top:1px solid var(--border)}
.section-body.collapsed{display:none}
.caret{font-size:10px;color:var(--text-3);transition:.2s}
.section-header.open .caret{transform:rotate(180deg)}
/* CHIPS */
.chip-grid{display:flex;flex-wrap:wrap;gap:6px}
.chip-grid.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.chip{padding:6px 12px;border-radius:20px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-2);font-size:12px;font-weight:500;cursor:pointer;transition:.15s;text-align:center;white-space:nowrap}
.chip:hover{border-color:var(--border-hi);color:var(--text-1)}
.chip.selected{background:var(--accent-dim);border-color:var(--accent);color:var(--accent-text)}
.chip.dim{opacity:.45;pointer-events:none}
/* MOOD CARDS */
.mood-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mood-card{padding:12px 14px;border-radius:var(--r);border:1px solid var(--border);background:var(--surface-2);cursor:pointer;transition:.15s}
.mood-card:hover{border-color:var(--border-hi);background:var(--surface-3)}
.mood-card.selected{background:var(--sel-bg);border-color:var(--accent)}
.mood-card-name{font-size:13px;font-weight:600;margin-bottom:3px}
.mood-card-tag{font-size:11px;color:var(--text-2);font-family:'Space Mono',monospace}
/* BPM/KEY ROW */
.bkrow{display:flex;gap:10px;align-items:stretch;flex-wrap:wrap}
.bkrow .key-wrap{flex:1;min-width:160px}
.bkrow .bpm-wrap{display:flex;align-items:center;gap:8px}
.bpm-input{width:80px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-1);font-family:'Space Mono',monospace;font-size:16px;font-weight:700;padding:8px 10px;text-align:center}
.bpm-input:focus{outline:none;border-color:var(--accent)}
.bpm-label{font-size:11px;color:var(--text-2);font-family:'Space Mono',monospace}
.select-input{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-1);font-size:13px;padding:8px 10px;appearance:none;cursor:pointer}
.select-input:focus{outline:none;border-color:var(--accent)}
/* GENRE PRESETS */
.preset-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.preset-pill{padding:5px 12px;border-radius:20px;border:1px solid var(--border);background:var(--surface-2);font-size:11px;font-weight:600;cursor:pointer;transition:.15s;color:var(--text-2)}
.preset-pill:hover{border-color:var(--border-hi);color:var(--text-1)}
/* ARTIST ACCORDION */
.artist-accordion{display:flex;flex-direction:column;gap:0}
.artist-row{border:1px solid var(--border);border-radius:var(--r);margin-bottom:6px;overflow:hidden}
.artist-header{display:flex;align-items:center;gap:8px;padding:10px 12px;cursor:pointer;background:var(--surface-2)}
.artist-header:hover{background:var(--surface-3)}
.artist-pill{display:inline-flex;align-items:center;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:700;color:#fff}
.artist-name{font-size:13px;font-weight:600}
.artist-caret{margin-left:auto;font-size:10px;color:var(--text-3);transition:.2s}
.artist-row.open .artist-caret{transform:rotate(180deg)}
.artist-songs{display:none;padding:10px 12px;background:var(--surface);border-top:1px solid var(--border)}
.artist-row.open .artist-songs{display:block}
.songs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px}
.song-card{padding:8px 10px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--surface-2);cursor:pointer;transition:.15s}
.song-card:hover{border-color:var(--border-hi);background:var(--surface-3)}
.song-name{font-size:12px;font-weight:600;margin-bottom:2px}
.song-meta{font-size:10px;color:var(--text-2);font-family:'Space Mono',monospace}
/* NARRATIVE */
.narr-segments{display:flex;flex-direction:column;gap:8px}
.narr-seg{border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.narr-seg-header{padding:10px 12px;background:var(--surface-2);font-size:12px;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px}
.narr-seg-header:hover{background:var(--surface-3)}
.narr-seg-icon{font-size:14px}
.narr-seg-options{display:none;padding:10px 12px;background:var(--surface);border-top:1px solid var(--border)}
.narr-seg.open .narr-seg-options{display:block}
.narr-opts{display:flex;flex-wrap:wrap;gap:6px}
.narr-opt{padding:5px 10px;border-radius:4px;border:1px solid var(--border);background:var(--surface-2);font-size:11px;cursor:pointer;transition:.15s;color:var(--text-2)}
.narr-opt:hover{border-color:var(--border-hi);color:var(--text-1)}
.narr-opt.selected{background:var(--accent-dim);border-color:var(--accent);color:var(--accent-text)}
/* CONCEPT AREA */
.concept-area{margin-top:12px}
.concept-area label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-2);margin-bottom:6px}
.concept-area textarea{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-1);font-family:'Space Grotesk',sans-serif;font-size:13px;padding:10px;resize:vertical;min-height:70px}
.concept-area textarea:focus{outline:none;border-color:var(--accent)}
.concept-area textarea::placeholder{color:var(--text-3)}
/* STRUCTURE BUILDER */
.struct-presets{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.struct-preset-btn{padding:5px 12px;border-radius:4px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-2);font-size:11px;font-weight:600;cursor:pointer;transition:.15s}
.struct-preset-btn:hover{border-color:var(--border-hi);color:var(--text-1)}
.struct-preset-btn.active{background:var(--accent-dim);border-color:var(--accent);color:var(--accent-text)}
.struct-builder{display:flex;gap:10px}
.struct-palette{display:flex;flex-wrap:wrap;gap:5px;flex:1}
.struct-seg-btn{padding:5px 10px;border-radius:4px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-2);font-size:11px;cursor:pointer;transition:.15s}
.struct-seg-btn:hover{border-color:var(--border-hi);color:var(--text-1)}
.struct-sequence{display:flex;flex-wrap:wrap;gap:4px;padding:10px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);min-height:42px;align-content:flex-start;flex:1}
.struct-item{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;border-radius:4px;background:var(--accent-dim);border:1px solid var(--accent);color:var(--accent-text);font-size:11px;font-weight:600}
.struct-item .remove{cursor:pointer;opacity:.6;font-size:10px;margin-left:2px}
.struct-item .remove:hover{opacity:1}
.struct-hint{font-size:11px;color:var(--text-3);margin-top:6px}
/* OUTPUT */
.output-section{margin-top:24px}
.gen-btn{width:100%;padding:14px;background:linear-gradient(135deg,var(--accent),#7B2FBE);border:none;border-radius:var(--r);color:#fff;font-family:'Space Grotesk',sans-serif;font-size:15px;font-weight:700;cursor:pointer;transition:.15s;letter-spacing:.3px}
.gen-btn:hover{opacity:.9;transform:translateY(-1px)}
.gen-btn:active{transform:none}
/* FLOATING BAR */
body{padding-bottom:66px}
.float-bar{position:fixed;bottom:0;left:0;right:0;z-index:200;background:rgba(15,17,26,0.96);border-top:1px solid var(--border);padding:10px 16px;display:flex;align-items:center;gap:10px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.float-summary{flex:1;font-size:11px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;font-family:'Space Mono',monospace}
.float-reset-btn{padding:7px 12px;border-radius:var(--r-sm);border:1px solid var(--border);background:transparent;color:var(--text-3);font-size:11px;font-weight:600;cursor:pointer;white-space:nowrap;transition:.15s;flex-shrink:0}
.float-reset-btn:hover{border-color:var(--border-hi);color:var(--text-1)}
.float-gen-btn{padding:9px 22px;border-radius:var(--r-sm);border:none;background:linear-gradient(135deg,var(--accent),#7B2FBE);color:#fff;font-size:13px;font-weight:700;cursor:pointer;white-space:nowrap;transition:.15s;font-family:'Space Grotesk',sans-serif;flex-shrink:0;letter-spacing:.3px}
.float-gen-btn:hover{opacity:.9;transform:translateY(-1px)}
.float-gen-btn:active{transform:none}
/* TOAST */
#toast{position:fixed;bottom:74px;right:16px;z-index:300;background:var(--surface-2);border:1px solid var(--accent);border-radius:var(--r);padding:10px 14px;font-size:12px;line-height:1.5;max-width:300px;box-shadow:0 4px 20px rgba(0,0,0,.5);pointer-events:none;opacity:0;transform:translateY(6px);transition:opacity .2s,transform .2s}
#toast.show{opacity:1;transform:translateY(0)}
.output-boxes{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.output-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.output-box-header{padding:10px 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:var(--surface-2)}
.output-box-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.7px;color:var(--text-2)}
.output-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:20px;font-size:10px;font-weight:600;background:rgba(0,229,160,0.1);border:1px solid rgba(0,229,160,0.3);color:var(--success)}
.copy-btn{padding:5px 12px;border-radius:4px;border:1px solid var(--border);background:var(--surface-3);color:var(--text-2);font-size:11px;font-weight:600;cursor:pointer;transition:.15s}
.copy-btn:hover{border-color:var(--border-hi);color:var(--text-1)}
.copy-btn.copied{border-color:var(--success);color:var(--success)}
.output-ta{width:100%;background:transparent;border:none;color:var(--text-1);font-family:'Space Mono',monospace;font-size:12px;padding:14px;resize:none;min-height:100px;line-height:1.7}
.output-ta:focus{outline:none}
/* ADV */
.adv-toggle{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-2);cursor:pointer;padding:10px 0;user-select:none}
.adv-toggle:hover{color:var(--text-1)}
.adv-sections{display:none;flex-direction:column;gap:8px}
.adv-sections.open{display:flex}
.adv-row{display:flex;flex-direction:column;gap:6px}
.adv-row-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-2)}
/* DIVIDER */
.divider{border:none;border-top:1px solid var(--border);margin:4px 0}

.hh-mode-btn.active{background:var(--accent-dim)!important;border-color:var(--accent)!important;color:var(--accent-text)!important}