:root{--primary:#0066cc;--bg:#f9f9f9;--card:#fff;--muted:#666;--success:#4CAF50;--danger:#F44336;--radius:12px}
/* Global box-sizing to avoid overflow */
.tpc-calculator-wrapper, .tpc-unified-calculator-card, .tpc-input-grid, .tpc-field, .tpc-input, .tpc-button {box-sizing:border-box}

/* Wrapper */
.tpc-calculator-wrapper{max-width:520px;width:100%;margin:18px auto;padding:18px;background:var(--bg);border-radius:var(--radius);box-shadow:0 6px 18px rgba(0,0,0,.06);box-sizing:border-box}
.tpc-unified-calculator-card{background:var(--card);padding:20px;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.04);display:grid;gap:12px}

/* Typography */
.tpc-card-title{color:var(--primary);font-size:20px;margin:0;text-align:left}
.tpc-description{font-size:13px;color:#555;margin:0 0 6px}

/* Inputs */
.tpc-input-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 12px}
.tpc-field{display:flex;flex-direction:column;gap:6px;min-width:0}
.tpc-field label{font-weight:600}
.tpc-input{padding:10px;border:1px solid #e6e6e6;border-radius:8px;font-size:14px;width:100%;background:#fbfbfc;min-width:0;overflow:hidden}

/* Buttons */
.tpc-button-row{display:flex;gap:10px;margin-top:6px}
.tpc-button{padding:10px 12px;border-radius:8px;border:none;cursor:pointer;font-weight:700;white-space:normal}
.tpc-button-primary{background:var(--primary);color:#fff}
.tpc-button-secondary{background:#fff;border:1px solid #e6e6e6;color:#333}

/* Results */
.tpc-results{padding:12px;background:#fbfbfb;border-radius:10px;margin-top:8px;overflow:hidden}
.tpc-percentage-display{font-size:2em;color:var(--primary);font-weight:800;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.tpc-percentage-display #tpc-productivity-percentage{font-size:1.8em}
.tpc-status-badge{padding:6px 10px;border-radius:999px;color:#fff;font-weight:700}
.tpc-status-badge.efficient{background:var(--success)}.tpc-status-badge.needs-improvement{background:var(--danger)}.tpc-status-badge.info{background:#607d8b}
.tpc-summary-text{color:var(--muted);margin-top:6px;font-size:14px;line-height:1.4}
.tpc-detailed-results{margin:8px 0 0;padding-left:18px;color:#333;font-size:13px}

/* Compact adjustments */
.tpc-unified-calculator-card{padding:16px;gap:10px}
.tpc-card-title{font-size:18px}
.tpc-input{padding:8px;font-size:13px}
.tpc-button{padding:8px 10px;font-size:14px}

/* Accessibility: make buttons full width on very small screens */
@media(max-width:600px){
  .tpc-input-grid{grid-template-columns:1fr;gap:10px}
  .tpc-calculator-wrapper{padding:12px;margin:12px}
  .tpc-unified-calculator-card{padding:12px}
  .tpc-button-row{flex-direction:column}
  .tpc-button{width:100%;display:block}
  .tpc-percentage-display{font-size:1.6em;gap:10px}
  .tpc-percentage-display #tpc-productivity-percentage{font-size:1.6em}
  .tpc-summary-text{font-size:13px}
  .tpc-detailed-results{font-size:13px}
}

/* Extra small phones */
@media(max-width:400px){
  .tpc-card-title{font-size:16px}
  .tpc-percentage-display{font-size:1.3em}
  .tpc-status-badge{font-size:12px;padding:5px 8px}
  .tpc-input{padding:8px;font-size:13px}
  .tpc-detailed-results{font-size:12px}
}

/* Ensure long numbers don't overflow */
.tpc-input::-webkit-outer-spin-button, .tpc-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }


/* Centering fix */
.tpc-calculator-wrapper{
  margin-left:auto !important;
  margin-right:auto !important;
  display:block;
}