/* Add Days — tool-specific */
.page { padding: 40px 20px; max-width: 720px; margin: 0 auto; }
.page h1 { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.page .subtitle { color: #888; margin-bottom: 20px; font-size: 14px; }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row input, .form-row select {
  background: #0d0d0d; border: 1px solid #2a2a2a; color: #fff;
  padding: 10px 12px; border-radius: 6px; font-size: 14px;
  color-scheme: dark;
}
.opt-label { font-size: 11px; color: #aaa; text-transform: uppercase; letter-spacing: 1px; font-weight: 500; }

.seg { display: inline-flex; gap: 0; border: 1px solid #2a2a2a; border-radius: 6px; overflow: hidden; }
.seg-btn { background: #0d0d0d; color: #888; border: none; padding: 9px 14px; cursor: pointer; font-size: 13px; flex: 1; }
.seg-btn:hover { background: #1a1a1a; color: #ccc; }
.seg-btn.active { background: #ff4444; color: #fff; }

.result-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.result-block { padding: 16px; background: #0d0d0d; border: 1px solid #2a2a2a; border-radius: 8px; text-align: center; }
.result-block.highlight { border-color: #ff4444; background: rgba(255, 68, 68, 0.06); }
.result-label { font-size: 11px; color: #888; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.result-value { font-size: 20px; font-weight: 700; color: #fff; }
.result-value.mono { font-family: 'SF Mono', monospace; font-size: 17px; }
.result-sub { font-size: 12px; color: #aaa; margin-top: 4px; }

@media (max-width: 600px) {
  .page { padding: 24px 12px; }
  .page h1 { font-size: 22px; }
}