/* =========================================================
   HoloBase Module 00 — Mjolnir Foundations.
   Page-specific styles (body.m00-page only) on top of styles.css and
   theme-holobase.css. Nothing here affects other pages.

   Terminal palette (contrast on the terminal background #1f1d1b):
     text #ece6dc 13.9:1 · commands #ffffff 16.5:1 · errors #ffab9e 9.0:1
     notes #a9cdee 10.4:1 · warnings #ffd27a 12.4:1
   SIMULATION badge: #2c2926 on #f2b134 (8.5:1)
   ========================================================= */

.m00-page .m00-shell {
  max-width: 1440px;
}

.m00-review {
  margin: 0 0 1.5rem;
  padding: 0.7rem 1rem;
  border: 1px solid #e3c98f;
  border-radius: var(--radius-md);
  background: #fbf1dc;
  color: var(--hb-charcoal);
  font-size: 0.92rem;
}

.m00-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.m00-content {
  min-width: 0;
}

.m00-header h1 {
  font-family: var(--font-heading);
  color: var(--hb-charcoal);
  font-size: 2.1rem;
  margin: 0.2rem 0 0.75rem;
}

.m00-kicker {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hb-text);
}

.m00-intro {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--hb-text);
  margin: 0 0 1.5rem;
}

.m00-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: #efe9df;
  color: var(--hb-charcoal);
  padding: 0.05em 0.35em;
  border-radius: 4px;
  overflow-wrap: anywhere;
}

.m00-content a {
  color: var(--hb-charcoal);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Credit and "three separate things" ---------- */

.m00-credit {
  margin: 0 0 2rem;
  padding: 1.1rem 1.3rem;
  border-left: 4px solid var(--hb-charcoal);
  background: var(--hb-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-sm);
}

.m00-credit h2 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--hb-charcoal);
  margin: 0 0 0.5rem;
}

.m00-credit p {
  margin: 0 0 0.6rem;
  line-height: 1.6;
  color: var(--hb-text);
}

.m00-credit p:last-child {
  margin-bottom: 0;
}

.m00-credit-f15 {
  padding: 0.6rem 0.8rem;
  background: var(--hb-cream);
  border-radius: var(--radius-sm);
}

.m00-how h2,
.m00-next h2,
.m00-part > h2 {
  font-family: var(--font-heading);
  color: var(--hb-charcoal);
  font-size: 1.4rem;
  margin: 0 0 1rem;
}

.m00-how-list,
.m00-next-grid {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 1rem;
}

.m00-how-item,
.m00-next-card {
  background: var(--hb-card);
  border: 1px solid var(--hb-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
}

.m00-how-item h3,
.m00-next-card h3 {
  margin: 0.3rem 0 0.4rem;
  font-size: 1rem;
  color: var(--hb-charcoal);
}

.m00-how-item p,
.m00-next-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--hb-text);
}

.m00-how-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  background: var(--hb-charcoal);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
}

.m00-next-card--primary {
  border: 2px solid var(--hb-charcoal);
}

/* ---------- Progress ---------- */

.m00-progress {
  margin: 0 0 2rem;
}

.m00-progress-text {
  margin: 0 0 0.4rem;
  font-weight: 600;
  color: var(--hb-charcoal);
}

.m00-progress-track {
  height: 8px;
}

/* ---------- Parts and exercises ---------- */

.m00-part {
  margin-bottom: 2.25rem;
}

.m00-part-num {
  display: block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hb-text);
  margin-bottom: 0.15rem;
}

.m00-ex {
  background: var(--hb-card);
  border: 1px solid var(--hb-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem 1.2rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.m00-ex.is-complete {
  border-color: #9bb88a;
}

.m00-ex-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.6rem;
}

.m00-ex-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--hb-text);
}

.m00-ex-head h3 {
  margin: 0;
  font-size: 1.06rem;
  color: var(--hb-charcoal);
  flex: 1 1 16rem;
}

.m00-kind {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--hb-border);
  white-space: nowrap;
}

.m00-kind--read {
  background: var(--hb-cream);
  color: var(--hb-charcoal);
}

.m00-kind--practise {
  background: #2c2926;
  border-color: #2c2926;
  color: #f2b134; /* 8.5:1 */
}

.m00-kind--explain {
  background: #e7eef4;
  border-color: #c7d6e2;
  color: #2f4a61; /* 8.4:1 */
}

.m00-ex-status {
  font-size: 0.8rem;
  font-weight: 700;
  color: #3e6b2a; /* 6.0:1 on the card */
}

.m00-ex-body p,
.m00-ex-body li {
  line-height: 1.6;
  color: var(--hb-text);
}

.m00-ex-body > p {
  margin: 0 0 0.7rem;
}

.m00-concept {
  color: var(--hb-text);
}

.m00-tasks {
  margin: 0 0 0.8rem;
  padding-left: 0;
  list-style: none;
}

.m00-task-item {
  position: relative;
  padding: 0.35rem 0 0.35rem 2rem;
}

.m00-tick {
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 999px;
  border: 2px solid var(--hb-muted);
  background: var(--hb-card);
}

.m00-task-item.is-done .m00-tick {
  border-color: #3e6b2a;
  background: #3e6b2a;
}

.m00-task-item.is-done .m00-tick::after {
  content: "";
  position: absolute;
  left: 0.36rem;
  top: 0.14rem;
  width: 0.3rem;
  height: 0.6rem;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.m00-hint,
.m00-model {
  margin: 0 0 0.6rem;
  border: 1px solid var(--hb-border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.7rem;
  background: var(--hb-cream);
}

.m00-hint summary,
.m00-model summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--hb-charcoal);
}

.m00-hint p,
.m00-model p {
  margin: 0.5rem 0 0.2rem;
}

.m00-kb {
  font-size: 0.9rem;
}

.m00-ex-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid #ece6dc;
}

.m00-ex-count {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--hb-charcoal);
}

.m00-answer-label {
  flex-basis: 100%;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--hb-charcoal);
}

.m00-answer {
  flex-basis: 100%;
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--hb-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--hb-charcoal);
}

.m00-done {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  color: var(--hb-charcoal);
}

.m00-done input {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--hb-charcoal);
}

.m00-done-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--hb-text);
}

.m00-open-sim {
  margin-left: auto;
}

/* ---------- Simulator panel ---------- */

.m00-terminal-wrap {
  min-width: 0;
}

.m00-terminal-toggle {
  display: none;
}

.sim {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #1f1d1b;
  color: #ece6dc;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid #000;
  box-shadow: var(--shadow-md);
  font-family: var(--font-mono);
}

.sim-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.7rem;
  padding: 0.55rem 0.75rem;
  background: #2c2926;
  border-bottom: 1px solid #000;
  font-family: var(--font-body);
}

.sim-badge {
  background: #f2b134;
  color: #2c2926;
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

.sim-header-text {
  font-size: 0.8rem;
  color: #ece6dc;
  flex: 1 1 12rem;
}

.sim-header-actions {
  display: flex;
  gap: 0.4rem;
}

.sim-btn {
  font: inherit;
  font-size: 0.78rem;
  color: #ece6dc;
  background: transparent;
  border: 1px solid #6b655e;
  border-radius: 4px;
  padding: 0.2rem 0.55rem;
  cursor: pointer;
}

.sim-btn:hover,
.sim-btn:focus-visible {
  border-color: #ece6dc;
}

.sim-btn:focus-visible,
.sim-input:focus-visible,
.m00-terminal-toggle:focus-visible {
  outline: 3px solid #f2b134;
  outline-offset: 2px;
}

.sim-screen {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0.85rem 0.9rem;
  font-size: 0.84rem;
  line-height: 1.5;
  min-height: 16rem;
}

.sim-row {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.sim-cmd { color: #fff; font-weight: 600; }
.sim-err { color: #ffab9e; }
.sim-info { color: #a9cdee; }
.sim-warn { color: #ffd27a; }
.sim-row-tag { font-weight: 700; }

.sim-line {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-top: 0.25rem;
}

.sim-prompt {
  color: #f2b134;
  white-space: nowrap;
}

.sim-input {
  flex: 1;
  min-width: 4rem;
  font: inherit;
  color: #fff;
  background: transparent;
  border: 0;
  padding: 0;
  caret-color: #f2b134;
}

.sim-editor {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.85rem;
  background: #1f1d1b;
  z-index: 2;
}

.sim-editor[hidden] {
  display: none;
}

.sim-editor-title {
  margin: 0;
  font-size: 0.95rem;
  color: #fff;
}

.sim-editor-note,
.sim-editor-status {
  margin: 0;
  font-size: 0.78rem;
  color: #a9cdee;
  font-family: var(--font-body);
}

.sim-editor-area {
  flex: 1;
  width: 100%;
  min-height: 10rem;
  font: inherit;
  font-size: 0.84rem;
  line-height: 1.5;
  color: #ece6dc;
  background: #121110;
  border: 1px solid #6b655e;
  border-radius: 4px;
  padding: 0.6rem;
  resize: none;
}

.sim-editor-area:focus-visible {
  outline: 3px solid #f2b134;
  outline-offset: 1px;
}

.sim-editor-actions {
  display: flex;
  gap: 0.5rem;
}

/* Wide screens: exercises left, simulator right (stays in view). */
@media (min-width: 1100px) {
  .m00-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  }

  .m00-terminal-wrap {
    position: sticky;
    top: 1rem;
  }

  .sim {
    height: calc(100vh - 2rem);
    max-height: 56rem;
  }

  .m00-open-sim {
    display: none;
  }
}

/* Smaller screens: the simulator opens as a panel at the bottom. */
@media (max-width: 1099.98px) {
  .m00-terminal-wrap {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    pointer-events: none;
  }

  .m00-terminal-toggle {
    display: block;
    pointer-events: auto;
    margin: 0 16px 16px auto;
    font: inherit;
    font-weight: 700;
    color: #2c2926;
    background: #f2b134;
    border: 0;
    border-radius: 999px;
    padding: 0.6rem 1.1rem;
    box-shadow: var(--shadow-md);
    cursor: pointer;
  }

  .m00-terminal {
    display: none;
  }

  .m00-terminal-wrap.is-open {
    pointer-events: auto;
  }

  .m00-terminal-wrap.is-open .m00-terminal {
    display: block;
    padding: 0 8px 8px;
  }

  .m00-terminal-wrap.is-open .m00-terminal-toggle {
    margin-bottom: 8px;
  }

  .m00-terminal-wrap.is-open .sim {
    height: 62vh;
  }

  body.m00-sim-open .m00-shell {
    padding-bottom: 66vh;
  }

  body:not(.m00-sim-open) .m00-shell {
    padding-bottom: 5rem;
  }
}

@media (max-width: 760px) {
  .m00-header h1 {
    font-size: 1.65rem;
  }

  .m00-ex {
    padding: 1rem 1rem 1.1rem;
  }

  .sim-screen {
    font-size: 0.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .m00-page * {
    transition: none !important;
    animation: none !important;
  }
}