@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');
[data-theme="dark"]{--bg:#0f0f14;--bg-surface:#16161d;--bg-card:#1e1e28;--bg-input:#1a1a24;--border:#2a2a3a;--text:#e8e8ef;--text-secondary:#a0a0b8;--text-muted:#6b6b80;--accent:#6366f1;--accent-subtle:rgba(99,102,241,0.12);--gradient-primary:linear-gradient(135deg,#6366f1,#8b5cf6);--glass-bg:rgba(30,30,40,0.7);--glass-border:rgba(255,255,255,0.08)}
[data-theme="light"]{--bg:#f5f5f7;--bg-surface:#fff;--bg-card:#fff;--bg-input:#f8f8fc;--border:#e0e0e8;--text:#1a1a2e;--text-muted:#8888a0;--accent:#6366f1;--glass-bg:rgba(255,255,255,0.75);--glass-border:rgba(0,0,0,0.06)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}
.container{max-width:1000px;margin:0 auto;padding:0 1rem}
.navbar{position:sticky;top:0;z-index:200;backdrop-filter:blur(16px);background:var(--glass-bg);border-bottom:1px solid var(--glass-border);padding:.4rem 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:700;font-size:1.1rem;color:var(--text);text-decoration:none}
.nav-links{display:flex;gap:.5rem;align-items:center}
.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:12px;padding:1.25rem;backdrop-filter:blur(12px)}
.btn{display:inline-flex;align-items:center;padding:.4rem .8rem;border:none;border-radius:8px;font-weight:600;font-size:.85rem;cursor:pointer;transition:all .15s}
.btn-secondary{background:var(--bg-card);color:var(--text);border:1px solid var(--border)}
.btn-sm{padding:.3rem .6rem;font-size:.8rem}
.theme-btn{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:2px 8px;cursor:pointer;font-size:1rem}
.text-muted{color:var(--text-muted)}
.hidden{display:none!important}
input[type="text"],select{width:100%;padding:.5rem .75rem;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:8px;font-family:inherit;font-size:.9rem}
input[type="range"]{width:100%;accent-color:var(--accent)}
label{display:flex;flex-direction:column;gap:.25rem;font-size:.8rem;color:var(--text-muted);margin-bottom:.5rem}

.tabs{display:flex;gap:4px;padding:.5rem}
.tab{background:var(--bg-card);color:var(--text-secondary);border:1px solid var(--border);padding:.5rem 1rem;font-size:.85rem;font-weight:600;cursor:pointer;border-radius:8px;transition:all .15s;flex:1;text-align:center}
.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}

.font-options{display:flex;gap:1rem;margin-top:.5rem}
.font-options label{flex:1}

.ascii-output{font-family:'JetBrains Mono',monospace;font-size:.6rem;line-height:1.1;overflow-x:auto;white-space:pre;color:var(--accent);min-height:100px;margin-top:1rem;tab-size:2}

.draw-toolbar{display:flex;gap:.75rem;align-items:center}
.draw-grid{display:grid;grid-template-columns:repeat(60,1fr);gap:0;cursor:crosshair;user-select:none}
.draw-cell{aspect-ratio:1;border:1px solid rgba(255,255,255,0.03);font-family:'JetBrains Mono',monospace;font-size:.5rem;text-align:center;line-height:1;display:flex;align-items:center;justify-content:center;color:var(--accent);transition:background .05s}
.draw-cell:hover{background:var(--accent-subtle)}
.draw-cell.filled{background:rgba(99,102,241,0.1)}