:root {
  --bg:        #0f1115;
  --surface:   #181b22;
  --surface-2: #1f242d;
  --border:    #2a2e38;
  --text:      #e6e8ee;
  --muted:     #8a93a6;
  --accent:    #6ea8ff;

  --c-prog:   #4ea1ff;
  --c-iat:    #fb923c;
  --c-real:   #4ade80;
  --c-hook:   #ec4899;
  --c-tramp:  #c084fc;
  --c-warn:   #f59e0b;

  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; line-height: 1.55; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); background: var(--surface-2); padding: 1px 6px; border-radius: 4px; font-size: 0.9em; }
em { color: var(--accent); font-style: normal; }

.hero { border-bottom: 1px solid var(--border); background: linear-gradient(180deg, #11141b 0%, var(--bg) 100%); }
.hero-inner { max-width: 1100px; margin: 0 auto; padding: 48px 32px 32px; }
.hero h1 { font-size: 2.1rem; margin: 0 0 12px; }
.lede { font-size: 1rem; color: var(--muted); max-width: 820px; }
.toc { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px; font-family: var(--mono); font-size: 0.85rem; }
.toc a { background: var(--surface); padding: 5px 11px; border-radius: 5px; border: 1px solid var(--border); }

.scenario { max-width: 1100px; margin: 0 auto; padding: 44px 32px; border-bottom: 1px solid var(--border); }
.scenario-header h2 { margin: 0 0 10px; font-size: 1.45rem; }
.scenario-header p { color: var(--muted); max-width: 820px; margin: 0; }
.scenario-body { margin-top: 24px; }

.viz { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 22px; min-height: 320px; }

.controls { display: flex; gap: 8px; align-items: center; margin-top: 14px; }
.controls button { background: var(--surface-2); border: 1px solid var(--border); color: var(--text); font-family: var(--mono); font-size: 1rem; padding: 6px 12px; border-radius: 6px; cursor: pointer; }
.controls button:hover:not(:disabled) { background: #262b35; border-color: var(--accent); }
.controls button:disabled { opacity: 0.35; cursor: not-allowed; }
.step-indicator { margin-left: auto; color: var(--muted); font-family: var(--mono); font-size: 0.85rem; }

.step-status { margin-top: 14px; font-size: 0.92rem; padding: 10px 14px; background: var(--surface-2); border-left: 3px solid var(--accent); border-radius: 4px; min-height: 60px; }

/* ---------- Generic panels ---------- */
.panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 800px) { .panels { grid-template-columns: 1fr; } }
.panels.three { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 1000px) { .panels.three { grid-template-columns: 1fr; } }

.panel {
  background: #0b0d12;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  font-family: var(--mono);
  font-size: 0.86rem;
  transition: border-color 0.2s, opacity 0.2s;
}
.panel.dim { opacity: 0.4; }
.panel-h {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--muted);
}
.panel-h.h-prog  { color: var(--c-prog); }
.panel-h.h-iat   { color: var(--c-iat); }
.panel-h.h-real  { color: var(--c-real); }
.panel-h.h-hook  { color: var(--c-hook); }
.panel-h.h-tramp { color: var(--c-tramp); }

.panel.bd-prog  { border-color: var(--c-prog); }
.panel.bd-iat   { border-color: var(--c-iat); }
.panel.bd-real  { border-color: var(--c-real); }
.panel.bd-hook  { border-color: var(--c-hook); }
.panel.bd-tramp { border-color: var(--c-tramp); }

.panel pre { margin: 0; white-space: pre-wrap; word-break: break-word; }
.panel .label { color: var(--muted); font-size: 0.78rem; }
.panel .ptr { color: var(--c-iat); }
.panel .ptr.changed { color: var(--c-hook); font-weight: 700; }
.panel .insn { display: block; padding: 2px 4px; }
.panel .insn.changed { background: rgba(236, 72, 153, 0.15); color: var(--c-hook); }
.panel .insn.saved { background: rgba(192, 132, 252, 0.12); color: var(--c-tramp); }
.panel .insn.active { background: rgba(110, 168, 255, 0.15); border-left: 2px solid var(--accent); padding-left: 4px; }

/* Annotated byte row: hex on the left, ASM meaning on the right */
.bytes-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  align-items: center;
  padding: 4px 6px;
  border-radius: 3px;
  margin: 1px 0;
  border-left: 2px solid transparent;
}
.bytes-row .hex { color: var(--c-real); font-weight: 600; }
.bytes-row .asm { color: var(--muted); font-size: 0.85rem; }
.bytes-row .asm .comment { color: var(--text); }
.bytes-row .asm .size { color: var(--c-warn); font-size: 0.74rem; margin-left: 8px; }
.bytes-row.target {
  background: rgba(110, 168, 255, 0.12);
  border-left-color: var(--accent);
}
.bytes-row.target .hex { color: var(--accent); }
.bytes-row.changed {
  background: rgba(236, 72, 153, 0.18);
  border-left-color: var(--c-hook);
}
.bytes-row.changed .hex { color: var(--c-hook); }
.bytes-row.changed .asm .comment { color: var(--c-hook); font-weight: 600; }
.bytes-row.saved {
  background: rgba(192, 132, 252, 0.15);
  border-left-color: var(--c-tramp);
}
.bytes-row.saved .hex { color: var(--c-tramp); }
.bytes-row.active {
  background: rgba(74, 222, 128, 0.18);
  border-left-color: var(--c-rip);
}
.bytes-row.active .hex { color: var(--c-rip); font-weight: 700; }
.bytes-row.active::after {
  content: '◀ RIP';
  color: var(--c-rip);
  font-weight: 700;
  font-size: 0.74rem;
  margin-left: 6px;
}

/* Status pill above a panel showing "now executing here" */
.now-here {
  display: inline-block;
  background: rgba(74, 222, 128, 0.18);
  color: var(--c-rip);
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--c-rip);
  margin-left: 8px;
}

:root { --c-rip: #4ade80; --c-real: #4ade80; }

/* Arrow indicator between panels */
.flow {
  text-align: center;
  font-family: var(--mono);
  font-size: 1.2rem;
  color: var(--accent);
  margin: 6px 0;
}
.flow.hooked { color: var(--c-hook); }

/* For the "what is hooking" intro */
.intro-block {
  font-family: -apple-system, system-ui, sans-serif;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text);
  padding: 14px 16px;
  background: #0b0d12;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.intro-block p { margin: 0 0 12px; }
.intro-block p:last-child { margin-bottom: 0; }
.intro-block strong { color: var(--accent); }
.intro-block ul { margin: 6px 0 0; padding-left: 22px; color: var(--muted); }
.intro-block ul li { margin-bottom: 4px; }

footer { text-align: center; padding: 30px 20px 60px; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--border); margin-top: 20px; }
footer p { max-width: 820px; margin: 0 auto 10px; }
footer .back-link { font-family: var(--mono); }