*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--font:'Inter',system-ui,sans-serif;--mono:'Fira Code',monospace;--transition:250ms ease}
html{font-size:16px}
body{min-height:100vh;font-family:var(--font);color:#fff;overflow-x:hidden}
.bg-gradient{position:fixed;inset:0;z-index:0;background:linear-gradient(135deg,#667eea,#764ba2);transition:background 500ms ease}
.header{position:sticky;top:0;z-index:100;backdrop-filter:blur(20px);background:rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.12)}
.header-inner{max-width:900px;margin:0 auto;padding:.75rem 1.5rem;display:flex;align-items:center}
.logo{display:flex;align-items:center;gap:.5rem}
.logo-icon{font-size:1.25rem}
.logo h1{font-size:1.1rem;font-weight:700}
.main{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:1.5rem}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.controls-card{backdrop-filter:blur(20px);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:1.25rem}
.section-title{font-size:.9rem;font-weight:700;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}
.section-title::before{content:'';width:4px;height:18px;background:rgba(255,255,255,.5);border-radius:2px}
.sub-title{font-size:.7rem;font-weight:700;margin:.75rem 0 .5rem;text-transform:uppercase;letter-spacing:.5px;opacity:.7}
.ctrl{margin-bottom:.6rem}
.ctrl-label{display:flex;justify-content:space-between;font-size:.7rem;font-weight:600;margin-bottom:.2rem;opacity:.8}
.ctrl input[type="range"]{width:100%;-webkit-appearance:none;background:rgba(255,255,255,.15);height:4px;border-radius:2px;outline:none}
.ctrl input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:#fff;cursor:pointer}
.ctrl input[type="color"]{width:100%;height:30px;border:none;border-radius:6px;cursor:pointer}
.presets{display:flex;flex-wrap:wrap;gap:.3rem;margin-bottom:.75rem}
.preset-btn{padding:.3rem .6rem;backdrop-filter:blur(8px);background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:8px;cursor:pointer;font-size:.7rem;font-weight:600;color:#fff;transition:all var(--transition);font-family:var(--font)}
.preset-btn:hover,.preset-btn.active{background:rgba(255,255,255,.25);border-color:rgba(255,255,255,.3)}
.btn{display:inline-flex;align-items:center;gap:.3rem;padding:.45rem .85rem;border:none;border-radius:8px;font-size:.8rem;font-weight:600;cursor:pointer;transition:all var(--transition);font-family:var(--font)}
.btn-primary{background:rgba(255,255,255,.2);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-primary:hover{background:rgba(255,255,255,.3)}
.actions-row{display:flex;gap:.5rem}
.preview-col{display:flex;flex-direction:column;gap:1rem}
.preview-area{display:flex;align-items:center;justify-content:center;min-height:250px;border-radius:16px;background:transparent}
.glass-card{padding:2rem;text-align:center;max-width:300px;width:100%;transition:all 300ms ease}
.glass-card h3{font-size:1.1rem;font-weight:700;margin-bottom:.5rem}
.glass-card p{font-size:.8rem;opacity:.8}
.code-output{backdrop-filter:blur(12px);background:rgba(0,0,0,.3);border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:.6rem;font-family:var(--mono);font-size:.65rem;color:rgba(255,255,255,.8);white-space:pre-wrap;max-height:200px;overflow-y:auto}
.toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(100px);backdrop-filter:blur(12px);background:rgba(255,255,255,.15);color:#fff;padding:.6rem 1.25rem;border-radius:16px;font-size:.8rem;font-weight:500;border:1px solid rgba(255,255,255,.2);transition:transform 300ms ease;z-index:9999;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0)}
@media(max-width:700px){.two-col{grid-template-columns:1fr}.main{padding:1rem}}