:root{color-scheme:dark;--background:#08131f;--background-deep:#030811;--surface:rgba(8,20,33,0.76);--surface-strong:rgba(12,26,41,0.94);--text:#edf3ff;--muted:#95a8c4;--line:rgba(157,179,214,0.16);--accent:#4ecdc4;--accent-deep:#93f3ed;--accent-soft:rgba(78,205,196,0.14);--success:#66d39a;--error:#ff8d8d;--shadow:0 28px 80px rgba(0,0,0,0.42)}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{font-family:Avenir Next,Segoe UI,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(78,205,196,.14),transparent 28%),radial-gradient(circle at right 20%,rgba(84,132,255,.18),transparent 26%),linear-gradient(180deg,#0b1827 0,var(--background) 52%,var(--background-deep) 100%)}img{display:block;max-width:100%}button,input{font:inherit}.shell{min-height:100vh;padding:32px 20px 48px;max-width:1280px;margin:0 auto}.hero{width:100%;display:grid;grid-gap:28px;gap:28px;align-items:start}.site-footer{width:min(1120px,100%);margin:28px auto 0;padding-top:6px;color:var(--muted);font-size:.92rem}.site-footer p{margin:0}.hero-copy{max-width:none;padding-top:12px}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(13,30,46,.72);border:1px solid rgba(157,179,214,.18);color:var(--accent-deep);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase}h1{margin:18px 0 14px;font-family:Iowan Old Style,Palatino Linotype,serif;font-size:clamp(2.8rem,5vw,5rem);line-height:.99;letter-spacing:-.03em}.lead,h1{max-width:none}.lead{margin:0;color:var(--muted);font-size:1.05rem;line-height:1.65}.creator-link{color:inherit;text-decoration:none;border-bottom:1px solid rgba(147,243,237,.35);transition:color .2s ease,border-color .2s ease}.creator-link:hover{color:#ffffff;border-color:rgba(255,255,255,.7)}.feature-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.feature-list span{border-radius:999px;padding:10px 14px;border:1px solid var(--line);background:rgba(11,26,41,.72);color:var(--text);font-size:.92rem}.panel{display:grid;grid-gap:20px;gap:20px;padding:22px;border-radius:32px;background:var(--surface);border:1px solid rgba(157,179,214,.12);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.converter,.preview-card{border-radius:24px;padding:22px;background:var(--surface-strong);border:1px solid var(--line)}.converter{display:grid;grid-gap:16px;gap:16px}.mode-picker{display:flex;flex-wrap:wrap;gap:10px}.mode-button{background:rgba(11,26,41,.72);color:var(--muted);border:1px solid var(--line)}.mode-button.is-active{background:rgba(14,40,56,.92);color:var(--accent-deep);border-color:rgba(78,205,196,.24)}.dropzone{position:relative;display:grid;min-height:220px;padding:22px;border-radius:20px;border:1.5px dashed rgba(78,205,196,.32);background:linear-gradient(180deg,rgba(14,32,50,.95),rgba(9,20,33,.98)),var(--accent-soft);cursor:pointer;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease}.dropzone.drag-active,.dropzone:focus-within,.dropzone:hover{transform:translateY(-2px);border-color:rgba(78,205,196,.62);box-shadow:inset 0 0 0 1px rgba(78,205,196,.22)}.dropzone.has-file{border-style:solid}.dropzone.is-disabled{opacity:.6;cursor:not-allowed}.dropzone input{position:absolute;inset:0;opacity:0;cursor:pointer}.dropzone-copy{display:grid;align-content:center;grid-gap:10px;gap:10px;text-align:left}.dropzone-badge{width:-moz-fit-content;width:fit-content;border-radius:999px;padding:8px 12px;background:rgba(18,38,57,.92);color:var(--accent-deep);font-size:.82rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.dropzone-copy strong{font-size:1.4rem;line-height:1.15}.dropzone-copy span:last-child{color:var(--muted);line-height:1.5}.actions{display:flex;flex-wrap:wrap;gap:12px}button{border:0;border-radius:16px;padding:14px 18px;font-weight:700;cursor:pointer;transition:transform .2s ease,background .2s ease,color .2s ease,opacity .2s ease}button:hover:not(:disabled){transform:translateY(-1px)}button:disabled{cursor:not-allowed;opacity:.55}button[type=submit]{background:linear-gradient(135deg,var(--accent) 0,#5484ff 100%);color:#031019;box-shadow:0 16px 30px rgba(78,205,196,.18)}.ghost-button{background:transparent;color:var(--text);border:1px solid var(--line)}.download-button{background:rgba(14,40,56,.92);color:var(--accent-deep);border:1px solid rgba(78,205,196,.18)}.section-download-all{padding:10px 14px;border-radius:12px}.status{min-height:52px;display:flex;align-items:center;border-radius:16px;padding:14px 16px;background:rgba(9,20,33,.88);color:var(--muted);line-height:1.5}.tone-idle,.tone-info{border:1px solid rgba(157,179,214,.12)}.tone-success{color:var(--success);background:rgba(102,211,154,.1);border:1px solid rgba(102,211,154,.22)}.tone-error{color:var(--error);background:rgba(255,141,141,.1);border:1px solid rgba(255,141,141,.22)}.preview-card{display:grid;grid-gap:16px;gap:16px}.results-section{display:grid;grid-gap:12px;gap:12px;height:100%}.section-heading{justify-content:space-between}.section-heading,.section-heading-actions{display:flex;align-items:center;gap:12px}.section-label{color:var(--muted);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase}.file-list{display:grid;grid-gap:10px;gap:10px}.file-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border-radius:16px;padding:14px 16px;background:rgba(11,24,38,.88);border:1px solid rgba(157,179,214,.1)}.file-row-copy{min-width:0;display:grid;grid-gap:6px;gap:6px}.file-row-copy strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-row-copy span{color:var(--muted);font-size:.92rem}.file-row-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.status-chip{display:inline-flex;align-items:center;justify-content:center;min-width:84px;font-size:.8rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.status-chip-queued{color:var(--muted)}.status-chip-converting,.status-chip-downloading,.status-chip-uploading{color:var(--accent-deep)}.status-chip-complete{color:var(--success)}.status-chip-error{color:var(--error)}.mini-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex-shrink:0;padding:10px 14px;border-radius:12px;background:rgba(14,40,56,.92);color:var(--accent-deep);border:1px solid rgba(78,205,196,.18)}.button-spinner{width:16px;height:16px;animation:spin .9s linear infinite}.button-spinner-track{fill:none;stroke:rgba(147,243,237,.24);stroke-width:2}.button-spinner-head{fill:none;stroke:currentColor;stroke-linecap:round;stroke-width:2.5}.empty-state{display:grid;place-items:center;color:var(--muted);border-radius:16px;padding:16px;background:rgba(11,24,38,.88);border:1px solid rgba(157,179,214,.1);min-height:86px;text-align:center}@keyframes spin{to{transform:rotate(1turn)}}@media (min-width:920px){.shell{padding:48px 32px 64px}.hero{gap:34px}.panel{grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);align-items:start;padding:24px}}@media (max-width:640px){.shell{padding-inline:14px}h1{max-width:none;font-size:clamp(2.4rem,12vw,3.4rem)}.converter,.panel,.preview-card{padding:16px;border-radius:24px}.dropzone{min-height:190px;padding:18px}.actions{flex-direction:column}button{width:100%}.file-row,.file-row-actions{align-items:stretch;flex-direction:column}.mini-button,.status-chip{width:100%}}