/*
Copyright (c) 2026 Terry Packer.

This file is part of Terry Packer's Work.
See www.terrypacker.com for further info.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/* =============================================================
   HELP.CSS  —  Help Modal Styles
   Load after modals.css
   ============================================================= */

/* ── HELP MODAL OVERLAY ── */
.help-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: rgba(0, 0, 0, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.2s ease;
  backdrop-filter: blur(4px);
}
.help-modal.modal-visible { opacity: 1; }

/* ── HELP BOX ── */
.help-box {
  background: var(--bg-panel);
  border: 1px solid var(--border-hi);
  border-radius: 6px;
  width: 100%;
  max-width: 900px;
  height: 86vh;
  max-height: 780px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 32px 100px rgba(0,0,0,0.9), 0 0 0 1px var(--amber-dim) inset;
  transform: translateY(12px);
  transition: transform 0.2s ease;
  overflow: hidden;
}
.help-modal.modal-visible .help-box { transform: translateY(0); }

/* ── HELP HEADER ── */
.help-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-panel2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── HELP BODY: sidebar + content ── */
.help-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ── SIDEBAR NAV ── */
.help-sidebar {
  width: 210px;
  flex-shrink: 0;
  background: var(--bg-panel2);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 8px 0;
}
.help-sidebar::-webkit-scrollbar { width: 3px; }

.help-nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  cursor: pointer;
  transition: background 0.12s;
  border-left: 2px solid transparent;
  user-select: none;
}
.help-nav-item:hover { background: rgba(255,255,255,0.03); }
.help-nav-item.active {
  background: var(--amber-glow);
  border-left-color: var(--amber);
}
.help-nav-icon {
  font-size: 14px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}
.help-nav-label {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  line-height: 1.3;
}
.help-nav-item.active .help-nav-label { color: var(--amber); }

/* ── CONTENT AREA ── */
.help-content {
  flex: 1;
  overflow-y: auto;
  min-width: 0;
}
.help-content::-webkit-scrollbar { width: 5px; }

/* ── PANES ── */
.help-pane { display: none; padding: 24px 28px 40px; }
.help-pane.active { display: block; }

.help-pane-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-left: 12px;
  margin-bottom: 20px;
}
.help-pane-icon { font-size: 22px; }
.help-pane-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

.help-pane-body { color: var(--text-dim); line-height: 1.7; font-size: 13px; }
.help-pane-body p { margin-bottom: 12px; }
.help-pane-body p:last-child { margin-bottom: 0; }
.help-pane-body strong { color: var(--text-primary); font-weight: 600; }
.help-pane-body em { color: var(--amber); font-style: normal; font-weight: 500; }
.help-pane-body code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  background: rgba(0, 212, 232, 0.08);
  border: 1px solid rgba(0, 212, 232, 0.15);
  padding: 1px 5px;
  border-radius: 2px;
}

/* ── SUBHEADINGS ── */
.help-subhead {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin: 20px 0 10px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
}

/* ── CONCEPT GRID (intro) ── */
.help-concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 16px 0;
}
.help-concept {
  background: var(--bg-panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
}
.help-concept-icon { font-size: 20px; margin-bottom: 6px; }
.help-concept-label {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 5px;
}
.help-concept-desc { font-size: 11.5px; color: var(--text-muted); line-height: 1.6; }

/* ── EVOLUTION FLOW DIAGRAM ── */
.help-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 18px 0;
  background: var(--bg-panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 14px 16px;
  overflow-x: auto;
}
.help-flow-step {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-align: center;
  background: var(--bg-input);
  border: 1px solid var(--border-hi);
  border-radius: 3px;
  padding: 8px 12px;
  white-space: nowrap;
  flex-shrink: 0;
}
.help-flow-step span {
  display: block;
  font-family: var(--font-body);
  font-size: 9px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 3px;
  text-transform: none;
}
.help-flow-arrow {
  color: var(--amber-dim);
  font-size: 16px;
  flex-shrink: 0;
  padding: 0 2px;
}

/* ── ITEM LIST (key-value style) ── */
.help-item-list { display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }
.help-item {
  background: var(--bg-panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 14px;
}
.help-item-head { margin-bottom: 6px; }
.help-item p { margin: 0; font-size: 12px; line-height: 1.65; }

/* ── HELP TAG (inline label) ── */
.help-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  background: var(--bg-input);
  border: 1px solid var(--border-hi);
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 0.06em;
}

/* ── TIP BOX ── */
.help-tip {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--amber-glow);
  border: 1px solid var(--amber-dim);
  border-radius: 4px;
  padding: 10px 14px;
  margin: 14px 0;
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
}
.help-tip-icon { font-size: 15px; flex-shrink: 0; margin-top: 1px; }
.help-tip code { background: rgba(240,165,0,0.15); border-color: var(--amber-dim); color: var(--amber); }

/* ── PROBLEM CARDS ── */
.help-problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 14px 0; }
.help-problem-card {
  background: var(--bg-panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
}
.help-problem-name {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 7px;
}
.help-problem-card p { font-size: 11.5px; margin-bottom: 8px; line-height: 1.6; }
.help-problem-tip {
  font-size: 10.5px;
  color: var(--cyan);
  border-top: 1px solid var(--border);
  padding-top: 7px;
  margin-top: 6px;
  font-style: italic;
}

/* ── FIELD GRID ── */
.help-field-grid { display: flex; flex-direction: column; gap: 6px; margin: 12px 0; }
.help-field {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  align-items: baseline;
  background: var(--bg-panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 12px;
}
.help-field-name {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--amber);
  font-weight: 600;
  flex-shrink: 0;
}
.help-field-desc { font-size: 11.5px; color: var(--text-muted); line-height: 1.6; }
.help-field-desc code { font-size: 10px; }

/* ── CODE BLOCKS ── */
.help-code-block {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  background: #060910;
  border: 1px solid var(--border-hi);
  border-radius: 4px;
  padding: 10px 14px;
  margin: 8px 0;
  color: #abb2c0;
  overflow-x: auto;
  white-space: pre;
}
.hljs-comment { color: #4a5568; }
.hljs-kw      { color: var(--purple); }
.hljs-fn      { color: var(--cyan); }
.hljs-num     { color: var(--green); }
.hljs-op      { color: var(--amber); }
.hljs-str     { color: #e0a070; }

/* ── GENE TABLE ── */
.help-gene-table {
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin: 12px 0;
  font-size: 11.5px;
}
.help-gene-row {
  display: grid;
  grid-template-columns: 148px 140px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--border);
  padding: 6px 10px;
  align-items: baseline;
  color: var(--text-muted);
  line-height: 1.5;
}
.help-gene-row:last-child { border-bottom: none; }
.help-gene-row.header {
  background: var(--bg-panel2);
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.help-gene-row .mono {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--cyan);
}

/* ── TIPS GRID ── */
.help-tip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 14px 0; }
.help-tip-card {
  background: var(--bg-panel2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
}
.help-tip-card-title {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin-bottom: 7px;
}
.help-tip-card p { font-size: 11.5px; margin: 0; line-height: 1.6; }
.help-tip-card code { font-size: 10px; }

/* ── MATH DISPLAY BLOCKS ── */
.help-math {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
  background: #060910;
  border: 1px solid var(--border-hi);
  border-left: 3px solid var(--cyan-dim);
  border-radius: 3px;
  padding: 10px 14px;
  margin: 10px 0;
  color: var(--cyan);
  white-space: pre;
}