/**
 * Calorie Calculator Tool Specific Styling
 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',sans-serif;color:#0f172a;line-height:1.5}
.cal-card{background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.06);padding:28px;max-width:480px;margin:0 auto}
.cal-title{font-size:18px;font-weight:700;margin-bottom:20px;color:#0f172a}
.cal-gender{display:flex;gap:8px;margin-bottom:18px}
.cal-gender button{flex:1;padding:10px;border:1.5px solid #e2e8f0;border-radius:8px;background:#fff;font-family:'Inter',sans-serif;font-size:13px;font-weight:600;color:#64748b;cursor:pointer;transition:all .2s ease}
.cal-gender button.active{border-color:#4f46e5;background:#4f46e5;color:#fff}
.cal-unit-toggle{display:flex;gap:6px;margin-bottom:18px}
.cal-unit-toggle span{font-size:12px;font-weight:600;color:#64748b;align-self:center}
.cal-toggle-btn{display:inline-flex;align-items:center;gap:4px;background:#f1f5f9;border:none;border-radius:6px;padding:5px 10px;font-family:'Inter',sans-serif;font-size:12px;font-weight:600;color:#64748b;cursor:pointer;transition:all .2s ease}
.cal-toggle-btn.active{background:#4f46e5;color:#fff}
.cal-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cal-field{margin-bottom:14px}
.cal-field label{display:block;font-size:13px;font-weight:600;color:#64748b;margin-bottom:6px}
.cal-input-wrap{position:relative;display:flex;align-items:center}
.cal-input-wrap .suffix{position:absolute;right:14px;font-size:13px;font-weight:500;color:#64748b;pointer-events:none}
.cal-input{width:100%;height:48px;border:1.5px solid #e2e8f0;border-radius:8px;padding:0 14px;font-family:'Inter',sans-serif;font-size:15px;color:#0f172a;background:#fff;transition:all .2s ease;outline:none}
.cal-input.has-suffix{padding-right:50px}
.cal-input:focus{border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.cal-select{width:100%;height:48px;border:1.5px solid #e2e8f0;border-radius:8px;padding:0 14px;font-family:'Inter',sans-serif;font-size:14px;color:#0f172a;background:#fff;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%2364748b' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;cursor:pointer;transition:all .2s ease;outline:none}
.cal-select:focus{border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.1)}
.cal-error{font-size:12px;color:#ef4444;margin-top:4px;display:none}
.cal-error.visible{display:block}
.cal-results{background:#f8fafc;border-radius:10px;padding:20px;margin-top:20px;display:none}
.cal-results.visible{display:block}
.cal-result-card{background:#fff;border-radius:10px;padding:16px;text-align:center;margin-bottom:12px}
.cal-result-card:last-child{margin-bottom:0}
.cal-result-card .label{font-size:12px;font-weight:600;color:#64748b;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}
.cal-result-card .value{font-size:26px;font-weight:700;color:#4f46e5;line-height:1.2}
.cal-result-card .sub{font-size:12px;color:#64748b;margin-top:4px}
.cal-formula{background:#fff;border-radius:8px;padding:14px;font-size:12px;color:#64748b;line-height:1.7;margin-top:12px}
.cal-formula strong{color:#4f46e5;font-weight:600}
@media(prefers-color-scheme:dark){.cal-card{background:#1e293b;box-shadow:0 4px 20px rgba(0,0,0,.3)}.cal-title{color:#f1f5f9}.cal-gender button{background:#0f172a;border-color:#334155;color:#94a3b8}.cal-gender button.active{border-color:#4f46e5;background:#4f46e5;color:#fff}.cal-input,.cal-select{background:#0f172a;border-color:#334155;color:#f1f5f9}.cal-input:focus,.cal-select:focus{border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.15)}.cal-result-card{background:#0f172a}.cal-result-card .value{color:#818cf8}.cal-results{background:#0f172a}.cal-formula{background:#0f172a;color:#94a3b8}.cal-toggle-btn{background:#0f172a;color:#94a3b8}.cal-toggle-btn.active{background:#4f46e5;color:#fff}}
[data-theme="dark"] .cal-card{background:#1e293b;box-shadow:0 4px 20px rgba(0,0,0,.3)}
[data-theme="dark"] .cal-title{color:#f1f5f9}
[data-theme="dark"] .cal-gender button{background:#0f172a;border-color:#334155;color:#94a3b8}
[data-theme="dark"] .cal-gender button.active{border-color:#4f46e5;background:#4f46e5;color:#fff}
[data-theme="dark"] .cal-input,[data-theme="dark"] .cal-select{background:#0f172a;border-color:#334155;color:#f1f5f9}
[data-theme="dark"] .cal-input:focus,[data-theme="dark"] .cal-select:focus{border-color:#4f46e5;box-shadow:0 0 0 3px rgba(79,70,229,.15)}
[data-theme="dark"] .cal-result-card{background:#0f172a}
[data-theme="dark"] .cal-result-card .value{color:#818cf8}
[data-theme="dark"] .cal-results{background:#0f172a}
[data-theme="dark"] .cal-formula{background:#0f172a;color:#94a3b8}
[data-theme="dark"] .cal-toggle-btn{background:#0f172a;color:#94a3b8}
[data-theme="dark"] .cal-toggle-btn.active{background:#4f46e5;color:#fff}