:root{--bg: #0f0f0f;--card: #1b1b1b;--card-soft: #232323;--accent: #ff7a00;--text: #ffffff;--muted: #9a9a9a;--border: #2a2a2a}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.container{max-width:520px;margin:0 auto;padding:24px 18px 60px}h1{font-size:28px;margin-bottom:20px;letter-spacing:-.5px}h2{font-size:22px;margin-bottom:20px;letter-spacing:-.4px}h3{margin:0 0 14px;font-size:18px;font-weight:600}.split-button{width:100%;padding:18px;margin-bottom:14px;font-size:18px;font-weight:600;border-radius:16px;border:none;background:var(--card);color:var(--text);transition:.15s ease}.split-button:active{transform:scale(.98);background:#262626}.exercise-card{background:var(--card);padding:20px;border-radius:18px;margin-bottom:18px;box-shadow:0 4px 14px #00000073}.set-line{padding:8px 0;font-size:15px;color:#ccc;border-bottom:1px solid var(--border)}.set-line:last-child{border-bottom:none}.add-set-button{width:100%;margin-top:16px;padding:16px;border-radius:14px;border:none;background:#2b2b2b;color:#fff;font-size:16px;font-weight:500;transition:.15s ease}.add-set-button:active{transform:scale(.98);background:#323232}.editor-panel{margin-top:16px;padding:18px;background:var(--card-soft);border-radius:16px}.adjust-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;font-size:15px}.adjust-buttons{display:flex;align-items:center;gap:12px}.adjust-buttons button{padding:12px 18px;font-size:16px;border-radius:12px;border:none;background:#2f2f2f;color:#fff;transition:.15s ease}.adjust-buttons button:active{transform:scale(.95);background:#3a3a3a}.value-display{min-width:90px;text-align:center;font-weight:600;font-size:16px}.save-button{width:100%;padding:18px;border-radius:14px;border:none;font-weight:600;font-size:16px;background:var(--accent);color:#000;transition:.15s ease}.save-button:active{transform:scale(.97)}html{scroll-behavior:smooth}.text-input{width:100%;padding:14px 16px;border-radius:14px;border:1px solid #2a2a2a;background:#1f1f1f;color:#fff;font-size:16px;outline:none}.text-input:focus{border-color:#ff7a00}.row{display:flex;gap:10px;align-items:center}.primary-button{padding:14px 18px;border-radius:14px;border:none;background:#ff7a00;color:#000;font-weight:600;font-size:15px}.subtle-button{padding:10px 14px;border-radius:12px;border:none;background:#2b2b2b;color:#fff;font-size:14px}.danger-button{padding:10px 14px;border-radius:12px;border:none;background:#3a1f1f;color:#ff5c5c;font-size:14px}.exercise-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #2a2a2a}