:root {
  --bg: #070b0f;
  --bg2: #0b1118;
  --bg3: #0f1820;
  --bg4: #141f28;
  --bg5: #192530;
  --border: #1c3344;
  --accent: #00d4ff;
  --accent2: #00ff88;
  --accent3: #ff8c00;
  --accent4: #ff3c78;
  --accent5: #b060ff;
  --accent6: #ffd700;
  --text: #c9d8e8;
  --text2: #7a9ab0;
  --text3: #4a6a80;
  --mono: Arial, sans-serif;
  --display: Arial, sans-serif;
  --body: Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-weight: 300;
  display: flex;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
#sidebar {
  width: 270px; min-width: 270px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  position: fixed; top: 0; left: 0;
  height: 100vh; overflow-y: auto; z-index: 100;
  display: flex; flex-direction: column;
}
#sidebar::-webkit-scrollbar { width: 3px; }
#sidebar::-webkit-scrollbar-thumb { background: var(--border); }

.sb-logo {
  padding: 20px 18px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
}
.sb-logo h1 {
  font-family: var(--display);
  font-size: 12px; font-weight: 900;
  color: var(--accent); letter-spacing: 2px;
}
.sb-logo p { font-family: var(--mono); font-size: 9px; color: var(--text3); margin-top: 4px; }

.sb-search {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.sb-search input {
  width: 100%;
  background: var(--bg4); border: 1px solid var(--border);
  color: var(--text); font-family: var(--mono); font-size: 11px;
  padding: 7px 11px; border-radius: 4px; outline: none;
}
.sb-search input:focus { border-color: var(--accent); }
.sb-search input::placeholder { color: var(--text3); }

.sb-nav { flex: 1; padding: 6px 0; }
.sb-cat {
  padding: 10px 18px 3px;
  font-family: var(--display); font-size: 8px;
  color: var(--text3); letter-spacing: 2px; text-transform: uppercase;
}
.sb-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 18px;
  font-family: var(--mono); font-size: 11px;
  color: var(--text2); text-decoration: none;
  border-left: 2px solid transparent;
  cursor: pointer; transition: all 0.15s;
}
.sb-item:hover, .sb-item.active {
  color: var(--accent); border-left-color: var(--accent);
  background: rgba(0,212,255,0.05);
}
.sb-num { color: var(--text3); font-size: 10px; min-width: 18px; }

.sb-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  font-family: var(--mono); font-size: 9px;
  color: var(--text3); line-height: 1.7;
}

/* ===== MAIN ===== */
#main { margin-left: 270px; flex: 1; min-width: 0; }

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--bg2), var(--bg3), #0a1826);
  border-bottom: 1px solid var(--border);
  padding: 50px 56px 42px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -30%; right: -5%;
  width: 50%; height: 160%;
  background: radial-gradient(ellipse, rgba(0,212,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: 'OSINT';
  position: absolute; right: 50px; bottom: -10px;
  font-family: var(--display); font-size: 110px; font-weight: 900;
  color: rgba(0,212,255,0.03); letter-spacing: -5px; pointer-events: none;
}
.hero-tag {
  display: inline-block;
  font-family: var(--mono); font-size: 9px;
  background: rgba(0,212,255,0.1); color: var(--accent);
  border: 1px solid rgba(0,212,255,0.3);
  padding: 3px 12px; border-radius: 2px; letter-spacing: 2px;
  margin-bottom: 14px;
}
.hero h1 {
  font-family: var(--display); font-size: 32px; font-weight: 900;
  color: #fff; letter-spacing: 2px; text-transform: uppercase; line-height: 1.15;
}
.hero h1 span { color: var(--accent); }
.hero p { margin-top: 12px; font-size: 13px; color: var(--text2); max-width: 560px; line-height: 1.7; }
.hero-stats {
  display: flex; gap: 36px; margin-top: 24px; flex-wrap: wrap;
}
.stat-val { font-family: var(--display); font-size: 26px; font-weight: 700; color: var(--accent2); }
.stat-lbl { font-family: var(--mono); font-size: 9px; color: var(--text3); letter-spacing: 1px; margin-top: 2px; }

/* TOOLBAR */
.toolbar {
  padding: 12px 56px;
  background: var(--bg3); border-bottom: 1px solid var(--border);
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.btn {
  font-family: var(--mono); font-size: 10px;
  background: var(--bg4); border: 1px solid var(--border);
  color: var(--text2); padding: 5px 14px;
  border-radius: 3px; cursor: pointer; transition: all 0.2s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,212,255,0.05); }
.btn-lbl { font-family: var(--mono); font-size: 10px; color: var(--text3); }

/* CONTENT */
#content { padding: 0 56px 80px; }

/* SECTION HEADER */
.section-divider {
  margin-top: 44px; padding: 14px 22px;
  background: var(--bg4); border: 1px solid var(--border);
  border-left: 3px solid var(--accent5);
  border-radius: 4px;
  display: flex; align-items: center; gap: 12px;
}
.section-divider span {
  font-family: var(--display); font-size: 10px;
  letter-spacing: 3px; color: var(--accent5); text-transform: uppercase;
}
.section-divider small {
  font-family: var(--mono); font-size: 10px; color: var(--text3);
}

/* MODULE CARD */
.mod-card {
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: 8px; overflow: hidden;
  background: var(--bg2);
  transition: border-color 0.25s;
}
.mod-card:hover { border-color: rgba(0,212,255,0.25); }

.mod-header {
  padding: 18px 22px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: flex-start; gap: 16px;
  cursor: pointer; user-select: none;
}
.mod-num {
  font-family: var(--display); font-size: 10px;
  color: var(--accent);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.25);
  padding: 3px 9px; border-radius: 3px;
  white-space: nowrap; margin-top: 2px;
}
.mod-title-block { flex: 1; }
.mod-name {
  font-family: var(--display); font-size: 14px;
  font-weight: 700; color: #fff; letter-spacing: 0.5px;
}
.mod-desc { font-size: 12px; color: var(--text2); margin-top: 3px; line-height: 1.5; }
.mod-badge {
  font-family: var(--mono); font-size: 9px;
  padding: 3px 9px; border-radius: 3px;
  border: 1px solid; white-space: nowrap; margin-top: 2px;
}
.badge-critical { color: #ff3c78; border-color: #ff3c78; background: rgba(255,60,120,0.08); }
.badge-high { color: var(--accent3); border-color: var(--accent3); background: rgba(255,140,0,0.08); }
.badge-medium { color: var(--accent6); border-color: var(--accent6); background: rgba(255,215,0,0.07); }
.badge-passive { color: var(--accent2); border-color: var(--accent2); background: rgba(0,255,136,0.07); }
.badge-active { color: var(--accent4); border-color: var(--accent4); background: rgba(255,60,120,0.07); }

.chevron { transition: transform 0.2s; color: var(--text3); font-size: 14px; margin-left: auto; }
.collapsed-hdr .chevron { transform: rotate(-90deg); }

.mod-body { padding: 22px 22px 26px; }
.mod-body.collapsed { display: none; }

/* INSIDE CARDS */
.blk-label {
  font-family: var(--display); font-size: 9px;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent); margin: 20px 0 8px;
  display: flex; align-items: center; gap: 8px;
}
.blk-label::before { content: ''; display: inline-block; width: 14px; height: 1px; background: var(--accent); }
.blk-label:first-child { margin-top: 0; }

/* TAG ROWS */
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 4px; }
.tag {
  font-family: var(--mono); font-size: 11px;
  background: var(--bg4); border: 1px solid var(--border);
  padding: 3px 11px; border-radius: 3px; color: var(--text2);
}
.tag.green { color: var(--accent2); border-color: rgba(0,255,136,0.3); background: rgba(0,255,136,0.06); }
.tag.blue { color: var(--accent); border-color: rgba(0,212,255,0.3); background: rgba(0,212,255,0.06); }
.tag.orange { color: var(--accent3); border-color: rgba(255,140,0,0.3); background: rgba(255,140,0,0.06); }
.tag.purple { color: var(--accent5); border-color: rgba(176,96,255,0.3); background: rgba(176,96,255,0.06); }
.tag.red { color: var(--accent4); border-color: rgba(255,60,120,0.3); background: rgba(255,60,120,0.06); }
.tag.gold { color: var(--accent6); border-color: rgba(255,215,0,0.3); background: rgba(255,215,0,0.06); }

/* CODE BLOCKS */
.code {
  background: #040810;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 4px; padding: 14px 16px; margin: 8px 0;
  font-family: var(--mono); font-size: 11px;
  color: #a8d8ea; line-height: 1.85;
  overflow-x: auto; white-space: pre-wrap; word-break: break-word;
}
.code.green { border-left-color: var(--accent2); color: #a0ffca; }
.code.orange { border-left-color: var(--accent3); color: #ffd0a0; }
.code.purple { border-left-color: var(--accent5); color: #d4a8ff; }
.code.red { border-left-color: var(--accent4); color: #ffa8c0; }
.code.gold { border-left-color: var(--accent6); color: #fff0a0; }

/* INFO ROW */
.info-row {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 5px; padding: 12px 16px; margin-bottom: 8px;
  font-size: 12px; color: var(--text); line-height: 1.7;
}
.info-row strong {
  font-family: var(--mono); font-size: 9px; color: var(--text3);
  letter-spacing: 1px; text-transform: uppercase;
  display: block; margin-bottom: 5px;
}

/* IMPORTANCE TABLE */
.imp-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.imp-table th {
  background: var(--bg4); font-family: var(--mono); font-size: 9px;
  letter-spacing: 1px; text-transform: uppercase; color: var(--text3);
  padding: 8px 12px; text-align: left; border: 1px solid var(--border);
}
.imp-table td {
  font-family: var(--mono); font-size: 11px;
  padding: 7px 12px; border: 1px solid var(--border);
  vertical-align: top; line-height: 1.6;
}
.imp-table tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
.imp-critical { color: var(--accent4); }
.imp-high { color: var(--accent3); }
.imp-medium { color: var(--accent6); }
.imp-low { color: var(--text3); }

/* CHECKLIST ITEMS */
.check-list { list-style: none; margin-top: 6px; display: flex; flex-direction: column; gap: 5px; }
.check-list li {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 4px; padding: 7px 12px;
  font-family: var(--mono); font-size: 11px; color: var(--text);
  line-height: 1.5; cursor: pointer; transition: all 0.15s;
}
.check-list li:hover { border-color: rgba(0,212,255,0.3); }
.check-list li.done { opacity: 0.4; text-decoration: line-through; color: var(--text3); }
.check-list li::before {
  content: '☐'; color: var(--text3); flex-shrink: 0; font-size: 13px;
}
.check-list li.done::before { content: '☑'; color: var(--accent2); }

/* GRID */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 8px; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; margin-top: 8px; }

/* DOT MAPPING DIAGRAM */
.dot-map {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 6px; padding: 20px; margin-top: 8px;
  font-family: var(--mono); font-size: 11px;
}
.dot-node {
  display: inline-block;
  background: var(--bg4); border: 1px solid;
  border-radius: 4px; padding: 4px 12px; margin: 3px;
  font-size: 10px; font-family: var(--mono);
}
.dn-target { border-color: var(--accent4); color: var(--accent4); }
.dn-domain { border-color: var(--accent); color: var(--accent); }
.dn-person { border-color: var(--accent2); color: var(--accent2); }
.dn-org { border-color: var(--accent3); color: var(--accent3); }
.dn-ip { border-color: var(--accent5); color: var(--accent5); }
.dn-social { border-color: var(--accent6); color: var(--accent6); }

.flow-arrow { color: var(--text3); margin: 0 4px; }

/* SCROLL TOP */
#scrolltop {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--bg3); border: 1px solid var(--accent);
  color: var(--accent); font-family: var(--mono); font-size: 16px;
  width: 38px; height: 38px; border-radius: 4px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; z-index: 200; opacity: 0; pointer-events: none;
}
#scrolltop.show { opacity: 1; pointer-events: all; }
#scrolltop:hover { background: var(--accent); color: var(--bg); }

/* PROGRESS BAR */
.progress-wrap { padding: 10px 56px 0; background: var(--bg3); }
.progress-bar-outer { background: var(--bg4); border-radius: 2px; height: 3px; }
.progress-bar-inner { height: 3px; background: var(--accent); border-radius: 2px; width: 0; transition: width 0.3s; }
.progress-label { font-family: var(--mono); font-size: 9px; color: var(--text3); padding-bottom: 8px; margin-top: 4px; }

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  body { flex-direction: column; }
  #sidebar { position: static; width: 100%; height: auto; border-right: none; border-bottom: 1px solid var(--border); overflow-y: visible; padding-bottom: 10px; }
  .sb-nav { max-height: 250px; overflow-y: auto; border-bottom: 1px solid var(--border); }
  #main { margin-left: 0; width: 100%; }
  .hero { padding: 40px 20px 30px; }
  .hero h1 { font-size: 26px; }
  .hero::after { display: none; }
  .hero-stats { gap: 15px; }
  .toolbar { padding: 12px 20px; flex-direction: column; align-items: flex-start; }
  .progress-wrap { padding: 10px 20px 0; }
  #content { padding: 0 20px 60px; }
  .section-divider { padding: 10px 15px; flex-direction: column; align-items: flex-start; gap: 5px; }
  .mod-header { padding: 15px; gap: 10px; flex-wrap: wrap; }
  .mod-body { padding: 15px; }
  .two-col, .three-col { grid-template-columns: 1fr; }
  .footer { padding: 24px 20px !important; flex-direction: column; align-items: flex-start; }
}