:root {
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --warning: #ea580c;
  --danger: #dc2626;
  --text: #1f2937;
  --text-light: #6b7280;
  --text-dim: #9ca3af;
  --border: #e5e7eb;
  --bg: #f9fafb;
  --bg-card: #ffffff;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* HEADER */
.header {
  background: var(--bg-card);
  border-bottom: 2px solid var(--primary);
  padding: 2rem;
  margin-bottom: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.header-title { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 0.5rem; }
.header-subtitle { font-size: 14px; color: var(--text-light); margin-bottom: 1rem; }
.header-meta { font-size: 12px; color: var(--text-dim); }
.step-counter {
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-weight: 600;
}

/* STEP NAVIGATION */
.step-nav {
  margin-bottom: 2rem;
  overflow-x: auto;
}
.steps-container {
  display: flex;
  gap: 0.5rem;
  min-width: min-content;
  padding: 0.5rem;
}
.step-item {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  background: var(--bg);
  border: 2px solid var(--border);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.2s;
}
.step-item:hover { background: var(--primary-light); border-color: var(--primary); }
.step-item.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* STEP CONTENT */
.step-content {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}
.step { display: none; }
.step h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.notice {
  font-size: 13px;
  color: var(--text-light);
  background: var(--primary-light);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--primary);
}

/* FIELDS */
.field-grid {
  display: grid;
  gap: 1.5rem;
}
.field-grid.col1 { grid-template-columns: 1fr; }
.field {
  display: flex;
  flex-direction: column;
}
.field label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.field input,
.field select,
.field textarea {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.field small {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* SUB-HEADING */
.sub-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* REQUIRED ROLES */
.required-roles {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.role-required {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: var(--bg);
  border-radius: 6px;
  border: 1px solid var(--border);
}
.role-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.role-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}
.role-checkbox label {
  margin: 0;
  font-weight: 600;
  cursor: pointer;
}

/* WP TYPES TABLE */
#wp-types-table {
  overflow-x: auto;
}
.wp-type-row {
  display: grid;
  grid-template-columns: 30px 200px 200px 100px;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background: var(--bg);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
}
.wp-type-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* SEQUENCE */
.sequence-row {
  display: grid;
  grid-template-columns: 200px 100px 30px;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background: var(--bg);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
}
.sequence-row .row-del {
  width: 30px;
  height: 30px;
  padding: 0;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
.sequence-row .row-del:hover { background: #b91c1c; }

/* CONSTRAINTS */
.constraint-check {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg);
  border-radius: 6px;
  border: 1px solid var(--border);
  margin-bottom: 0.5rem;
}
.constraint-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}
.constraint-check label {
  margin: 0;
  cursor: pointer;
  font-size: 14px;
}

/* SOURCES */
.source-row {
  display: grid;
  grid-template-columns: 150px 150px 250px 150px 30px;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background: var(--bg);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
}
.source-row input,
.source-row select {
  padding: 0.5rem;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.source-row .row-del {
  width: 30px;
  height: 30px;
  padding: 0;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
.source-row .row-del:hover { background: #b91c1c; }

/* BUTTONS */
.add-btn {
  padding: 0.75rem 1.25rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.add-btn:hover { background: #1d4ed8; }

.nav-btn {
  padding: 0.75rem 1.5rem;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.nav-btn.primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.nav-btn.primary:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}
.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* NAVIGATION */
.step-navigation {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

/* MODAL */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-content {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 2rem;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}
.modal-header h3 { font-size: 18px; margin: 0; }
.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-dim);
}
.modal-close:hover { color: var(--text); }

.constraint-option {
  padding: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
}
.constraint-option:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .wp-type-row,
  .source-row {
    grid-template-columns: 1fr;
  }
  .step-navigation {
    flex-direction: column;
  }
}