/* ═══════════════════════════════════════════════════════════
   SHELL — the console sidebar, the mobile top bar it collapses
   into, and the scrolling canvas beside it.
   ═══════════════════════════════════════════════════════════ */

/* ═══ CONSOLE (desktop sidebar) ════════════════════════════ */
.console {
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 700;
  width: var(--console);
  display: flex; flex-direction: column; gap: 30px;
  padding: 32px 26px 30px;
  background: var(--bg);
  border-right: 1px solid var(--line);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

/* identity */
.ident { display: flex; align-items: center; gap: 12px; }
.ident__mark {
  width: 34px; height: 34px; flex-shrink: 0;
  display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
/* The lettermark is much wider than it is tall inside its square viewBox,
   so the box has to be larger than a centred glyph would need. */
.ident__mark svg { width: 21px; height: 21px; }
.ident__mark g { stroke: var(--accent); }
.ident:hover .ident__mark { border-color: var(--accent); background: var(--accent-soft); }

.ident__text { display: grid; gap: 3px; min-width: 0; }
.ident__text b {
  font-family: var(--font-display); font-weight: 700; font-size: 0.98rem;
  letter-spacing: -0.025em; line-height: 1.1;
}
.ident__text i {
  font: 500 var(--fs-micro)/1.2 var(--font-mono); font-style: normal;
  letter-spacing: 0.06em; color: var(--ink-3);
}

/* status block */
.console__status {
  display: grid; gap: 8px;
  padding: 14px 0; border-block: 1px solid var(--line);
}
.console__clock {
  font: 500 var(--fs-mono)/1 var(--font-mono);
  letter-spacing: 0.04em; color: var(--ink-3);
}
.console__clock b { color: var(--ink-2); font-weight: 500; font-variant-numeric: tabular-nums; }

/* section index — the primary nav */
.index { display: grid; gap: 1px; flex: 1; align-content: start; }
.index a {
  position: relative; display: flex; align-items: baseline; gap: 12px;
  padding: 9px 12px; border-radius: var(--radius);
  color: var(--ink-3);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.index a em {
  font: 500 var(--fs-micro)/1 var(--font-mono); font-style: normal;
  letter-spacing: 0.08em; color: var(--ink-3);
  transition: color var(--dur-fast) var(--ease);
}
.index a span {
  font-family: var(--font-display); font-weight: 600; font-size: 1rem;
  letter-spacing: -0.02em;
}
.index a:hover { color: var(--ink); background: var(--bg-2); }
.index a.is-current { color: var(--ink); background: var(--bg-2); }
.index a.is-current em { color: var(--accent); }
/* accent bar marking the section you're in */
.index a.is-current::before {
  content: ''; position: absolute; left: 0; top: 8px; bottom: 8px;
  width: 2px; border-radius: 2px; background: var(--accent);
}

/* footer of the console */
.console__foot { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.console__links { display: grid; gap: 5px; }
.console__links a {
  font: 500 var(--fs-mono)/1 var(--font-mono);
  letter-spacing: 0.06em; color: var(--ink-3);
  transition: color var(--dur-fast) var(--ease);
}
.console__links a:hover { color: var(--accent); }

/* reading progress, riding the sidebar's edge */
.console__progress {
  position: absolute; top: 0; right: -1px; bottom: 0; width: 2px;
  background: transparent; pointer-events: none;
}
.console__progress i {
  display: block; width: 100%; height: 100%;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  transform: scaleY(var(--p, 0)); transform-origin: top;
}

.burger { display: none; }

/* ═══ CANVAS ═══════════════════════════════════════════════ */
.canvas {
  margin-left: var(--console);
  max-width: calc(var(--canvas) + var(--gutter) * 2);
  padding: var(--gutter) var(--gutter) 0;
}

/* ═══ MOBILE: console becomes a top bar ════════════════════ */
@media (max-width: 1100px) {
  .console {
    inset: 0 0 auto 0; bottom: auto;
    width: auto; height: var(--bar-h);
    flex-direction: row; align-items: center; justify-content: space-between;
    gap: 16px; padding: 0 var(--gutter);
    border-right: 0; border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
  }
  .console { justify-content: flex-start; }
  .console__status,
  .index,
  .console__links { display: none; }
  /* the foot survives so the theme toggle stays reachable */
  .console__foot { margin-left: auto; }

  .burger { display: block; position: relative; width: 36px; height: 36px; }
  .burger i {
    position: absolute; inset: 0; margin: auto;
    width: 18px; height: 1.5px; background: var(--ink);
    transition: transform var(--dur) var(--ease);
  }
  .burger i:first-child { transform: translateY(-3px); }
  .burger i:last-child  { transform: translateY(3px); }
  .burger[aria-expanded='true'] i:first-child { transform: rotate(45deg); }
  .burger[aria-expanded='true'] i:last-child  { transform: rotate(-45deg); }

  .console__progress {
    inset: auto 0 -1px 0; top: auto; width: auto; height: 2px;
  }
  .console__progress i {
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(var(--p, 0)); transform-origin: left;
  }

  .canvas {
    margin-left: 0; margin-inline: auto;
    padding-top: calc(var(--bar-h) + var(--gutter));
  }
  /* anchor jumps must clear the fixed bar */
  html { scroll-padding-top: calc(var(--bar-h) + 20px); }
}

/* ═══ MOBILE MENU ══════════════════════════════════════════ */
.menu {
  position: fixed; inset: 0; z-index: 690;
  background: var(--bg-1);
  padding: calc(var(--bar-h) + 36px) var(--gutter) 36px;
  display: flex; flex-direction: column; justify-content: space-between;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.6s var(--ease);
}
.menu[hidden] { display: none; }
.menu.is-open { clip-path: inset(0 0 0 0); }

.menu__list { display: grid; gap: 2px; }
.menu__list a {
  display: flex; align-items: baseline; gap: 16px;
  padding: 13px 0; border-bottom: 1px solid var(--line);
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.7rem, 8.5vw, 2.8rem);
  text-transform: uppercase; letter-spacing: -0.03em; line-height: 1;
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), color var(--dur-fast) var(--ease);
}
.menu.is-open .menu__list a { opacity: 1; transform: none; }
.menu__list a em {
  font: 500 var(--fs-mono)/1 var(--font-mono); font-style: normal;
  color: var(--accent); letter-spacing: 0.08em;
}
.menu__list a:active { color: var(--accent); }

.menu__foot {
  display: flex; flex-wrap: wrap; gap: 8px 20px;
  font: 500 var(--fs-mono)/1.6 var(--font-mono); color: var(--ink-3);
}

/* ═══ FOOTER ═══════════════════════════════════════════════ */
.foot {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px; margin-top: calc(var(--gap) * 2);
  padding: 26px 4px 40px; border-top: 1px solid var(--line);
  font: 500 var(--fs-mono)/1.6 var(--font-mono);
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3);
}
.foot button {
  display: inline-flex; align-items: center; gap: 9px;
  font: inherit; letter-spacing: inherit; text-transform: inherit; color: var(--ink-2);
  transition: color var(--dur-fast) var(--ease);
}
.foot button i {
  width: 8px; height: 8px;
  border-top: 1.4px solid currentColor; border-right: 1.4px solid currentColor;
  transform: rotate(-45deg); transition: transform var(--dur) var(--ease);
}
.foot button:hover { color: var(--accent); }
.foot button:hover i { transform: rotate(-45deg) translate(3px, -3px); }
@media (max-width: 680px) { .foot span:nth-child(2) { display: none; } }