Interactive Smart Fit Predictor Card

<!--
  Author: @codepeek
  License: MIT
  Tags: #buttons #css #interface #opensource #codepeek
-->
<div class="fit-card"><div class="fit-title">⚡ Smart Fit Predictor</div><p class="fit-sub">Select your build for accuracy:</p><div class="fit-selector"><button class="fit-opt active">Slim</button><button class="fit-opt">Regular</button><button class="fit-opt">Relaxed</button></div><div class="fit-res"><span class="res-lbl">RECOMMENDED SIZE</span><span class="res-val">MEDIUM (M)</span><div class="fit-meter"><div class="meter-bar"></div></div></div></div>

/*
 * Author: @codepeek
 * License: MIT
 * Tags: #buttons #css #interface #opensource #codepeek
 */

.fit-card { width: 220px; background: #ffffff; border-radius: 16px; padding: 16px; box-shadow: 0 20px 40px rgba(0,0,0,0.08); font-family: system-ui, sans-serif; margin: auto; box-sizing: border-box; }
.fit-title { font-size: 10px; font-weight: 900; color: #0f172a; }
.fit-sub { font-size: 7px; color: #64748b; margin: 2px 0 10px; }
.fit-selector { display: flex; gap: 4px; background: #f1f5f9; padding: 3px; border-radius: 8px; margin-bottom: 12px; }
.fit-opt { flex: 1; border: none; background: transparent; padding: 5px; font-size: 7px; font-weight: 800; color: #64748b; border-radius: 6px; cursor: pointer; transition: 0.2s; }
.fit-opt.active { background: #ffffff; color: #0f172a; box-shadow: 0 2px 6px rgba(0,0,0,0.06); }
.fit-res { background: #f8fafc; border: 1px dashed #cbd5e1; border-radius: 10px; padding: 10px; text-align: center; }
.res-lbl { font-size: 6px; font-weight: 900; color: #64748b; letter-spacing: 0.5px; display: block; }
.res-val { font-size: 12px; font-weight: 900; color: #16a34a; margin-top: 2px; display: block; }
.fit-meter { width: 100%; height: 4px; background: #e2e8f0; border-radius: 2px; margin-top: 6px; overflow: hidden; }
.meter-bar { width: 85%; height: 100%; background: #16a34a; border-radius: 2px; }