.sltdtc-app {
  --sltdtc-primary: #2563EB;
  --sltdtc-primary-dark: #1D4ED8;
  --sltdtc-text: #172033;
  --sltdtc-muted: #64748B;
  --sltdtc-border: #DCE3EC;
  --sltdtc-bg: #F8FAFC;
  --sltdtc-surface: #FFFFFF;
  --sltdtc-success: #15803D;
  --sltdtc-warning: #D97706;
  --sltdtc-danger: #DC2626;
  --sltdtc-radius: 18px;
  --sltdtc-shadow: 0 12px 32px rgba(15,23,42,.08);
  max-width: 1050px;
  margin: 0 auto;
  color: var(--sltdtc-text);
  font-family: inherit;
}

.sltdtc-app * { box-sizing: border-box; }

.sltdtc-card {
  background: var(--sltdtc-surface);
  border: 1px solid var(--sltdtc-border);
  border-radius: var(--sltdtc-radius);
  box-shadow: var(--sltdtc-shadow);
  padding: 24px;
  margin-bottom: 20px;
}

.sltdtc-hero {
  background: linear-gradient(180deg,#fff 0%,#f8fbff 100%);
}

.sltdtc-eyebrow {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--sltdtc-primary);
  margin-bottom: 8px;
}

.sltdtc-title {
  margin: 0 0 8px;
  font-size: clamp(28px,4vw,42px);
  line-height: 1.12;
}

.sltdtc-subtitle,
.sltdtc-section-head p,
.sltdtc-note-block p,
.sltdtc-helper {
  color: var(--sltdtc-muted);
  line-height: 1.65;
}

.sltdtc-subtitle { margin: 0 0 22px; font-size: 17px; }

.sltdtc-tabs {
  display: inline-flex;
  gap: 6px;
  background: #EEF2F7;
  padding: 5px;
  border-radius: 12px;
  margin-bottom: 22px;
}

.sltdtc-tab {
  min-height: 44px;
  border: 0;
  background: transparent;
  color: #475569;
  border-radius: 9px;
  padding: 0 16px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.sltdtc-tab.is-active {
  background: #fff;
  color: var(--sltdtc-primary);
  box-shadow: 0 2px 8px rgba(15,23,42,.08);
}

.sltdtc-grid { display: grid; gap: 16px; }
.sltdtc-grid-2, .sltdtc-grid-3 { grid-template-columns: 1fr; }

.sltdtc-field label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

.sltdtc-input,
.sltdtc-select {
  width: 100%;
  min-height: 50px;
  border: 1px solid #CBD5E1;
  border-radius: 12px;
  background: #fff;
  color: var(--sltdtc-text);
  padding: 0 14px;
  font: inherit;
  font-size: 16px;
}

.sltdtc-input:focus,
.sltdtc-select:focus,
.sltdtc-btn:focus-visible,
.sltdtc-tab:focus-visible,
.sltdtc-chip:focus-visible,
.sltdtc-value-btn:focus-visible {
  outline: 3px solid rgba(37,99,235,.22);
  outline-offset: 2px;
}

.sltdtc-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.sltdtc-chip {
  min-height: 38px;
  border: 1px solid #CBD5E1;
  border-radius: 999px;
  background: #fff;
  padding: 0 13px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.sltdtc-chip:hover { border-color: var(--sltdtc-primary); color: var(--sltdtc-primary); }

.sltdtc-tap-wrap {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 18px;
  flex-wrap: wrap;
}

.sltdtc-btn {
  min-height: 48px;
  border: 0;
  border-radius: 12px;
  padding: 0 18px;
  font: inherit;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
}

.sltdtc-btn:hover { transform: translateY(-1px); }

.sltdtc-btn-secondary {
  background: #F1F5F9;
  color: #1E293B;
  border: 1px solid #CBD5E1;
}

.sltdtc-btn-small { min-height: 40px; font-size: 14px; padding: 0 14px; }

.sltdtc-inline-message {
  min-height: 22px;
  margin-top: 14px;
  color: var(--sltdtc-danger);
  font-weight: 700;
}

.sltdtc-section-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.sltdtc-section-head h3 {
  margin: 0 0 6px;
}

.sltdtc-primary-result {
  text-align: center;
  border-radius: 18px;
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  padding: 24px 18px;
  margin: 18px 0;
}

.sltdtc-primary-result-compact { margin-bottom: 0; }

.sltdtc-primary-result > span {
  display: block;
  color: #475569;
  font-weight: 700;
  margin-bottom: 6px;
}

.sltdtc-primary-result strong {
  font-size: clamp(42px,7vw,64px);
  line-height: 1;
  color: var(--sltdtc-primary);
}

.sltdtc-primary-result div span {
  font-size: 22px;
  font-weight: 800;
}

.sltdtc-primary-result p {
  color: #334155;
  margin: 10px 0 0;
}

.sltdtc-mini {
  border: 1px solid var(--sltdtc-border);
  border-radius: 14px;
  padding: 15px;
}

.sltdtc-mini span {
  display: block;
  color: var(--sltdtc-muted);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
}

.sltdtc-mini strong { font-size: 18px; }

.sltdtc-table-wrap {
  overflow-x: auto;
  margin-top: 14px;
  border: 1px solid var(--sltdtc-border);
  border-radius: 14px;
}

.sltdtc-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: #fff;
}

.sltdtc-table th,
.sltdtc-table td {
  padding: 13px 12px;
  text-align: left;
  border-bottom: 1px solid #E2E8F0;
}

.sltdtc-table th {
  background: #F8FAFC;
  font-size: 13px;
  color: #475569;
}

.sltdtc-table tr:last-child td { border-bottom: 0; }

.sltdtc-value-btn {
  border: 0;
  background: transparent;
  color: var(--sltdtc-primary);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  padding: 5px 3px;
  border-radius: 6px;
}

.sltdtc-value-btn:hover { text-decoration: underline; }

.sltdtc-history-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.sltdtc-history-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  border: 1px solid var(--sltdtc-border);
  border-radius: 12px;
  padding: 13px 14px;
}

.sltdtc-history-item small {
  display: block;
  color: var(--sltdtc-muted);
  margin-top: 2px;
}

.sltdtc-history-item strong { white-space: nowrap; }

.sltdtc-empty {
  color: var(--sltdtc-muted);
  margin: 0;
}

.sltdtc-notes {
  display: grid;
  gap: 18px;
}

.sltdtc-note-block + .sltdtc-note-block {
  border-top: 1px solid var(--sltdtc-border);
  padding-top: 18px;
}

.sltdtc-note-block h3 { margin: 0 0 6px; }
.sltdtc-note-block p { margin: 0; }

.sltdtc-actions {
  display: flex;
  justify-content: flex-end;
}

[hidden] { display: none !important; }

@media (min-width: 720px) {
  .sltdtc-card { padding: 30px; }
  .sltdtc-grid-2 { grid-template-columns: repeat(2,1fr); }
  .sltdtc-grid-3 { grid-template-columns: repeat(3,1fr); }
}

@media (max-width: 620px) {
  .sltdtc-section-head {
    flex-direction: column;
  }

  .sltdtc-btn { width: 100%; }

  .sltdtc-tap-wrap {
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sltdtc-btn { transition: none; }
}