:root {
  --primary: #0f62fe;
  --primary-light: #edf5ff;
  --success: #198038;
  --warning: #8e6a00;
  --warning-bg: #fdf6dd;
  --danger: #da1e28;
  --text: #161616;
  --text-light: #525252;
  --text-dim: #8d8d8d;
  --border: #e0e0e0;
  --border-strong: #8d8d8d;
  --bg: #f4f4f4;
  --bg-card: #ffffff;
  --appbar: #161616;
  --shadow: none;
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.16);
}

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

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* HEADER — dark UI Shell bar */
.header {
  background: var(--appbar);
  color: #fff;
  padding: 0 16px;
  height: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

/* Prime logo (white-background wordmark) sits in a white chip on the dark bar */
.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  text-decoration: none;
  transition: opacity 0.2s;
  flex-shrink: 0;
}

.logo:hover { opacity: 0.92; }
.logo img { height: 24px; width: auto; display: block; }

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

.header-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 0;
  color: #fff;
  white-space: nowrap;
}

.header-subtitle {
  font-size: 12px;
  color: #c6c6c6;
  min-height: 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-button {
  padding: 7px 14px;
  background: transparent;
  color: #fff;
  border: 1px solid #6f6f6f;
  border-radius: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 400;
  transition: background 0.15s, border-color 0.15s;
}

.header-button:hover {
  background: #353535;
  border-color: #6f6f6f;
}

.step-counter {
  background: transparent;
  border: 1px solid #6f6f6f;
  color: #c6c6c6;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* MAIN NAVIGATION — underline tabs */
.main-nav {
  display: flex;
  gap: 0;
  padding: 0 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.nav-tab {
  padding: 13px 18px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  cursor: pointer;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s, color 0.15s;
}

.nav-tab:hover {
  background: var(--bg);
  color: var(--text);
}

.nav-tab.active {
  background: none;
  color: var(--text);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.tab-icon { font-size: 16px; }

/* CONTENT AREA */
.content-area {
  flex: 1;
  padding: 2rem;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.tool {
  display: none;
}

.tool.active {
  display: block;
}

/* STEP NAV */
.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: 0.6rem 0.9rem;
  border-radius: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-light);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.step-item:hover { background: var(--bg); border-color: var(--border-strong); color: var(--text); }
.step-item.active { background: var(--primary); color: white; border-color: var(--primary); font-weight: 600; }

/* STEP CONTENT */
.step-content {
  background: var(--bg-card);
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 0;
  margin-bottom: 2rem;
}

.step { display: none; }

.step h2 {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.notice {
  font-size: 13px;
  color: var(--text-light);
  background: var(--primary-light);
  padding: 0.75rem 1rem;
  border-radius: 0;
  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: 0;
  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;
}

/* ROLES */
.required-roles {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.role-required {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: var(--bg);
  border-radius: 0;
  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 */
#wp-types-table { overflow-x: auto; }

.wp-type-row {
  display: grid;
  grid-template-columns: 1.2fr 90px 2fr 1.5fr;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border-radius: 0;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
}

.wp-types-header {
  display: grid;
  grid-template-columns: 1.2fr 90px 2fr 1.5fr;
  gap: 1rem;
  padding: 0.5rem 1rem;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

/* BUTTONS */
.add-btn {
  padding: 0.7rem 1.25rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 0;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.add-btn:hover { background: var(--cds-hover-primary, #0353e9); }

.nav-btn {
  padding: 0.7rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
}

.nav-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--bg); }

.nav-btn.primary {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.nav-btn.primary:hover { background: #0e6027; border-color: #0e6027; color: white; }

.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: 0;
  box-shadow: var(--shadow);
}

/* COMMENTS */
.comments-section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--border);
}

.comments-toggle {
  padding: 0.5rem 1rem;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 0;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.comments-toggle:hover { background: var(--primary); color: white; }

/* CONSTRUCTION SEQUENCE (drag & drop) */
#sequence-list { display: flex; flex-direction: column; gap: 8px; }
.seq-step {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 0;
  box-shadow: var(--shadow); transition: border-color .12s, box-shadow .12s, opacity .12s;
}
.seq-step:hover { border-color: var(--primary); }
.seq-step.dragging { opacity: .35; border-style: dashed; }
.seq-step.drag-over { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.seq-handle { cursor: grab; color: var(--text-dim); font-size: 16px; line-height: 1; user-select: none; flex-shrink: 0; }
.seq-handle:active { cursor: grabbing; }
.seq-num {
  width: 24px; height: 24px; flex-shrink: 0; border-radius: 50%; background: var(--primary-light); color: var(--primary);
  font-size: 11px; font-weight: 600; display: flex; align-items: center; justify-content: center;
}
.seq-step input.seq-label {
  border: 1px solid transparent; background: transparent; font-size: 14px; padding: 5px 8px; color: var(--text); flex: 1; border-radius: 4px;
}
.seq-step input.seq-label:focus { background: var(--bg); border-color: var(--primary); outline: none; }
.seq-del {
  background: var(--danger); color: white; border: none; border-radius: 4px;
  width: 28px; height: 28px; cursor: pointer; font-weight: 600; flex-shrink: 0;
}
.seq-arrow { text-align: center; color: var(--text-dim); font-size: 13px; line-height: .4; margin: -2px 0; }
.seq-step.gate { border-color: var(--warning); background: var(--warning-bg); border-style: dashed; }
.seq-step.gate .seq-label { color: var(--warning); font-weight: 500; }
.seq-gate-badge {
  flex-shrink: 0; padding: 3px 9px; border-radius: 20px; background: var(--warning); color: #fff;
  font-size: 9px; font-weight: 600; letter-spacing: .08em; white-space: nowrap;
}

/* STEP COMMENTS DROPDOWN */
.comments-dropdown {
  position: fixed;
  top: 80px;
  right: 2rem;
  width: 360px;
  max-width: calc(100vw - 2rem);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  box-shadow: var(--shadow-lg);
  padding: 1.25rem;
  z-index: 1200;
}

.comments-dropdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.comments-dropdown-close {
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-light);
  line-height: 1;
}

.comments-dropdown-close:hover { color: var(--text); }

/* 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: 0;
  padding: 2rem;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.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); }

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

/* RESPONSIVE */
@media (max-width: 768px) {
  .header { height: auto; flex-direction: column; align-items: stretch; text-align: center; gap: 0.75rem; padding: 12px 16px; }
  .main-nav { flex-wrap: wrap; }
  .content-area { padding: 1rem; }
  .step-content { padding: 1rem; }
  .wp-type-row { grid-template-columns: 1fr; }
  .wp-types-header { display: none; }
  .step-navigation { flex-direction: column; }
}