/* =============================================================
   styles.css — custom styles that complement Tailwind v4
   Organized by:
     1. Base / tokens
     2. Background grid
     3. Section primitives (.section-title, .tag, etc.)
     4. Timeline (Work History)
     5. Skill bars
     6. Form fields
     7. Network nav (the centerpiece)
     8. Scroll-reveal animation
     9. Reduced-motion overrides
   ============================================================= */


/* ----------------------------------------------------
   1. Base / tokens
   ---------------------------------------------------- */
:root {
  --color-brand-400: #22d3ee;
  --color-brand-300: #67e8f9;
  --color-accent:    #34d399;
}

html { color-scheme: dark; }

/* Smooth scroll already enabled via the html class, but make it
   honor reduced-motion (the html class can't do that). */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}


/* ----------------------------------------------------
   2. Decorative background grid
   ---------------------------------------------------- */
.grid-bg {
  background-image:
    linear-gradient(to right, rgba(148, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}


/* ----------------------------------------------------
   3. Section primitives
   ---------------------------------------------------- */

/* Alternating section band — a slightly raised "panel zone" (HMI-style)
   that breaks the page's uniform darkness. Applied to experience + skills. */
.section-band {
  background: rgba(15, 23, 42, 0.35);
  border-top: 1px solid rgba(30, 41, 59, 0.7);
  border-bottom: 1px solid rgba(30, 41, 59, 0.7);
}

.section-eyebrow {
  font-family: var(--font-mono, "JetBrains Mono"), ui-monospace, monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-brand-400);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.875rem, 1.4rem + 1.8vw, 2.75rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: rgb(241 245 249); /* slate-100 */
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  background: rgba(34, 211, 238, 0.08);
  color: #a5f3fc;
  border: 1px solid rgba(34, 211, 238, 0.18);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}


/* ----------------------------------------------------
   4. Timeline (Work History)
   ---------------------------------------------------- */
.timeline { list-style: none; padding: 0; margin: 0; }

.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom,
    transparent,
    rgba(34, 211, 238, 0.4) 10%,
    rgba(34, 211, 238, 0.4) 90%,
    transparent
  );
}

.timeline-item {
  position: relative;
  padding-left: 2.5rem;
  margin-bottom: 2.5rem;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: 4px;
  top: 1.4rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #0f172a;          /* slate-900 */
  border: 2px solid var(--color-brand-400);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.1);
}
.timeline-marker::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-brand-400);
  opacity: 0.4;
  animation: pulse-dot 2.2s ease-in-out infinite;
}

/* Current role (first item) pulses emerald — live, like the ACTIVE badge */
.timeline-item:first-child .timeline-marker {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.1);
}
.timeline-item:first-child .timeline-marker::after {
  background: var(--color-accent);
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(0.6); opacity: 0.3; }
  50%      { transform: scale(1);   opacity: 0.9; }
}

.timeline-card {
  position: relative;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.45);     /* slate-900/45 */
  border: 1px solid rgb(30 41 59);        /* slate-800 */
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.timeline-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(15, 23, 42, 0.65);
  transform: translateY(-1px);
}

/* Education re-uses similar card style */
.edu-card {
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgb(30 41 59);
  transition: border-color .2s ease, transform .2s ease;
}
.edu-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  transform: translateY(-1px);
}


/* ----------------------------------------------------
   5. Skills
   ---------------------------------------------------- */
.skill-group {
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgb(30 41 59);
}
.skill-group__title {
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgb(148 163 184);
  margin-bottom: 1rem;
}

.skill-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.85rem; }

.skill {
  position: relative;
  font-size: 0.875rem;
  color: rgb(226 232 240); /* slate-200 */
}
.skill > span { display: block; margin-bottom: 0.35rem; }

.skill::after {
  /* track */
  content: "";
  display: block;
  height: 4px;
  border-radius: 2px;
  background: rgb(30 41 59);
  position: relative;
}

.skill::before {
  /* fill — width set inline by JS via custom property */
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 4px;
  width: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-brand-400), var(--color-accent));
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 1;
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.35);
}
.skill.is-animated::before { width: var(--level, 0%); }


/* ----------------------------------------------------
   6. Form fields
   ---------------------------------------------------- */
.field { display: grid; gap: 0.4rem; }
.field__label {
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgb(148 163 184);
}
.field__input {
  width: 100%;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgb(30 41 59);
  border-radius: 6px;
  padding: 0.7rem 0.9rem;
  color: rgb(241 245 249);
  font-size: 0.95rem;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.field__input:focus {
  outline: none;
  border-color: var(--color-brand-400);
  background: rgba(15, 23, 42, 0.8);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}

/* Field-level fault state (rose = failure tier, like the error status).
   :user-invalid only matches after real user interaction, so fields don't
   scream red before anyone has typed. */
.field__input:user-invalid {
  border-color: rgba(251, 113, 133, 0.55);
}
.field__input:user-invalid:focus {
  border-color: rgb(251 113 133);
  box-shadow: 0 0 0 3px rgba(251, 113, 133, 0.15);
}


/* ----------------------------------------------------
   7. Tag-browser navigation (Ignition-style sidebar)

      Layout:
        - mobile: hidden off-screen by default, slides in from the
          left when .is-open is added (with backdrop dimming the page)
        - lg+:    permanently visible, fixed below the top bar
   ---------------------------------------------------- */

.tag-nav {
  position: fixed;
  top: 3.5rem;           /* below the 56px top bar */
  left: 0;
  bottom: 0;
  width: 16rem;          /* 256px — matches lg:pl-64 on <main> */
  z-index: 40;
  transform: translateX(-100%);
  transition: transform .28s cubic-bezier(0.22, 1, 0.36, 1);
}

.tag-nav__panel {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: rgba(2, 6, 23, 0.92);
  border-right: 1px solid rgba(34, 211, 238, 0.18);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1rem 0.75rem;
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
}

/* Backdrop on mobile when the nav is open */
.tag-nav::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .28s ease;
  z-index: -1;
}
.tag-nav.is-open {
  transform: none;
}
.tag-nav.is-open::before {
  opacity: 1;
  pointer-events: auto;
}

@media (min-width: 1024px) {
  .tag-nav { transform: none; }
  .tag-nav::before { display: none; }
}

/* Header — collapsible "▼ samdonche" brand row */
.tag-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.25rem 0.5rem 0.75rem;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.12);
}
.tag-nav__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: rgb(226 232 240);
}
.tag-nav__chev {
  color: var(--color-brand-400);
  font-size: 0.7rem;
}
.tag-nav__brand { font-weight: 500; }

.tag-nav__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 1.75rem;
  width: 1.75rem;
  border-radius: 4px;
  border: 1px solid rgb(30 41 59);
  color: rgb(148 163 184);
}
/* Desktop: the sidebar is permanent, so there is nothing to close.
   (This must live here — the display above would otherwise override
   the lg:hidden utility, since styles.css loads after tailwind.css.) */
@media (min-width: 64rem) {
  .tag-nav__close { display: none; }
}
.tag-nav__close:hover {
  color: rgb(241 245 249);
  border-color: rgba(34, 211, 238, 0.4);
}

/* Caption */
.tag-nav__caption {
  margin: 0.75rem 0.5rem 0.25rem;
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgb(100 116 139);
}

/* Tree — flex grows to fill, then footer pins to bottom */
.tag-nav__tree {
  flex: 1;
  list-style: none;
  margin: 0.25rem 0 0;
  padding: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(34, 211, 238, 0.2) transparent;
}
.tag-nav__tree::-webkit-scrollbar { width: 6px; }
.tag-nav__tree::-webkit-scrollbar-thumb {
  background: rgba(34, 211, 238, 0.18);
  border-radius: 3px;
}

/* Tree item — anchor row */
.tag-nav__item {
  display: grid;
  grid-template-columns: 1rem 1fr auto;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  border-radius: 4px;
  font-size: 0.78rem;
  color: rgb(148 163 184);
  text-decoration: none;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
  white-space: nowrap;
  overflow: hidden;
}
.tag-nav__item:hover {
  background: rgba(34, 211, 238, 0.06);
  color: rgb(226 232 240);
}
.tag-nav__item:focus-visible {
  outline: none;
  background: rgba(34, 211, 238, 0.08);
  color: rgb(241 245 249);
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.35);
}

/* Quality-value dot (left column) */
.qv-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgb(71 85 105);            /* default — slate-600 */
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.8);
  flex-shrink: 0;
  justify-self: center;
  transition: background .25s ease, box-shadow .25s ease;
}

/* Quality-value badge (right column) */
.qv-badge {
  font-size: 0.5625rem;          /* 9px */
  letter-spacing: 0.12em;
  color: rgb(100 116 139);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  background: rgba(15, 23, 42, 0.5);
}

/* QV status: STALE — unvisited */
.tag-nav__item[data-qv="stale"] .qv-dot   { background: rgb(234 179 8); }   /* amber-500 */
.tag-nav__item[data-qv="stale"] .qv-badge {
  color: rgb(234 179 8);
  border-color: rgba(234, 179, 8, 0.25);
}

/* QV status: GOOD — visited at least once.
   Color semantics site-wide: cyan = data/machine side, emerald = live/now. */
.tag-nav__item[data-qv="good"] .qv-dot   { background: var(--color-brand-400); }
.tag-nav__item[data-qv="good"] .qv-badge {
  color: var(--color-brand-400);
  border-color: rgba(34, 211, 238, 0.25);
}

/* QV status: LIVE — currently in view (overrides above); emerald = "online now",
   same signal as the System: Online dot and the profile card's ACTIVE state */
.tag-nav__item[data-qv="live"] {
  background: rgba(52, 211, 153, 0.07);
  color: rgb(241 245 249);
  box-shadow: inset 2px 0 0 0 var(--color-accent);
}
.tag-nav__item[data-qv="live"] .qv-dot {
  background: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.9), 0 0 8px rgba(52, 211, 153, 0.7);
  animation: qv-pulse 1.6s ease-in-out infinite;
}
.tag-nav__item[data-qv="live"] .qv-badge {
  color: rgb(110 231 183);
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.08);
}

@keyframes qv-pulse {
  0%, 100% { transform: scale(1);    opacity: 1;   }
  50%      { transform: scale(1.25); opacity: 0.8; }
}

/* Group (collapsible parent — uses native <details>/<summary>) */
.tag-nav__group {
  margin: 0;
}
.tag-nav__group > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 1rem 1fr auto;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  border-radius: 4px;
  font-size: 0.78rem;
  color: rgb(203 213 225);
  transition: background .15s ease, color .15s ease;
}
.tag-nav__group > summary::-webkit-details-marker { display: none; }
.tag-nav__group > summary:hover {
  background: rgba(34, 211, 238, 0.06);
  color: rgb(241 245 249);
}
.tag-nav__group > summary .tag-nav__chev {
  display: inline-block;
  font-size: 0.65rem;
  text-align: center;
  transition: transform .2s ease;
  color: rgb(100 116 139);
}
.tag-nav__group:not([open]) > summary .tag-nav__chev {
  transform: rotate(-90deg);
}
.tag-nav__group-count {
  font-size: 0.5625rem;
  color: rgb(100 116 139);
  letter-spacing: 0.05em;
}

/* Children list — indented under summary */
.tag-nav__group > ul {
  list-style: none;
  margin: 0;
  padding: 0.15rem 0 0.4rem 0.85rem;
  border-left: 1px dashed rgba(148, 163, 184, 0.15);
  margin-left: 0.45rem;
}
.tag-nav__group > ul .tag-nav__item {
  font-size: 0.73rem;
}

/* Footer — Cmd+K hint */
/* QV quality legend — a real tag browser would have one. Teaches the
   STALE/GOOD/LIVE mechanic to visitors who don't speak Ignition. */
.tag-nav__legend {
  padding: 0.75rem 0.25rem 0.25rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  color: rgb(100 116 139);
}
.tag-nav__legend p { margin: 0; display: flex; align-items: center; gap: 0.45rem; }
.tag-nav__legend .legend-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-dot--stale { background: rgb(234 179 8); }
.legend-dot--good  { background: var(--color-brand-400); }
.legend-dot--live  { background: var(--color-accent); }

.tag-nav__footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(148, 163, 184, 0.12);
}
.tag-nav__cmdk {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  border-radius: 4px;
  border: 1px solid rgb(30 41 59);
  background: rgba(15, 23, 42, 0.5);
  color: rgb(148 163 184);
  font-family: inherit;
  font-size: 0.7rem;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.tag-nav__cmdk:hover {
  color: rgb(241 245 249);
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(15, 23, 42, 0.8);
}
.tag-nav__cmdk-keys { display: inline-flex; gap: 0.15rem; }
.tag-nav__cmdk kbd,
.cmdk kbd {
  font-family: inherit;
  font-size: 0.625rem;
  line-height: 1;
  padding: 0.15rem 0.3rem;
  border-radius: 3px;
  background: rgba(34, 211, 238, 0.1);
  color: var(--color-brand-300);
  border: 1px solid rgba(34, 211, 238, 0.2);
}


/* ----------------------------------------------------
   7b. Command Palette (⌘K)
   ---------------------------------------------------- */

.cmdk {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  padding-left: 1rem;
  padding-right: 1rem;
}
.cmdk[hidden] { display: none; }

.cmdk__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: cmdk-fade .12s ease;
}

.cmdk__panel {
  position: relative;
  width: min(560px, 100%);
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  background: rgba(15, 23, 42, 0.97);
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 10px;
  box-shadow: 0 25px 60px -10px rgba(0,0,0,0.7),
              0 0 0 1px rgba(34, 211, 238, 0.08),
              0 0 40px -10px rgba(34, 211, 238, 0.3);
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
  overflow: hidden;
  animation: cmdk-rise .18s cubic-bezier(0.22, 1, 0.36, 1);
}

.cmdk__input-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  background: linear-gradient(180deg,
    rgba(34, 211, 238, 0.04),
    transparent);
}
.cmdk__prompt {
  color: var(--color-brand-400);
  font-weight: 600;
}
.cmdk__input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: rgb(241 245 249);
  font: inherit;
  font-size: 0.9rem;
  padding: 0;
}
.cmdk__input::placeholder {
  color: rgb(71 85 105);
}
.cmdk__esc {
  /* uses .cmdk kbd from above */
  font-size: 0.625rem;
  letter-spacing: 0.05em;
}

.cmdk__results {
  list-style: none;
  margin: 0;
  padding: 0.35rem;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(34, 211, 238, 0.2) transparent;
}
.cmdk__results::-webkit-scrollbar { width: 6px; }
.cmdk__results::-webkit-scrollbar-thumb {
  background: rgba(34, 211, 238, 0.18);
  border-radius: 3px;
}

.cmdk__item {
  display: grid;
  grid-template-columns: 0.8rem 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.7rem;
  border-radius: 5px;
  color: rgb(148 163 184);
  cursor: pointer;
  font-size: 0.78rem;
  transition: background .1s ease;
}
.cmdk__item-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgb(71 85 105);
  justify-self: center;
}
.cmdk__item-path {
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
}
.cmdk__item-path b {
  color: var(--color-brand-300);
  font-weight: 600;
  background: rgba(34, 211, 238, 0.08);
  border-radius: 2px;
  padding: 0 1px;
}
.cmdk__item-desc {
  font-size: 0.6875rem;
  color: rgb(100 116 139);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.cmdk__item.is-selected {
  background: rgba(34, 211, 238, 0.08);
  color: rgb(241 245 249);
  box-shadow: inset 2px 0 0 0 var(--color-brand-400);
}
.cmdk__item.is-selected .cmdk__item-dot {
  background: var(--color-brand-400);
  box-shadow: 0 0 6px rgba(34, 211, 238, 0.6);
}

.cmdk__empty {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.78rem;
  /* Failed query = mini warning state — amber, like a STALE tag */
  color: rgb(234 179 8);
}

.cmdk__footer {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  padding: 0.55rem 1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
  font-size: 0.625rem;
  color: rgb(100 116 139);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(2, 6, 23, 0.4);
}

@keyframes cmdk-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes cmdk-rise {
  from { opacity: 0; transform: translateY(-8px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}


/* ----------------------------------------------------
   7c. Stack diagram (decorative tech-stack network in Skills)
   ---------------------------------------------------- */

.stack-diagram {
  margin: 2.5rem auto 0;
  max-width: 880px;
  padding: 1.5rem 1.5rem 1.25rem;
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid rgb(30 41 59);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

/* Subtle inner glow at top to suggest "active panel" */
.stack-diagram::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(34, 211, 238, 0.05), transparent 50%);
  pointer-events: none;
}

.stack-diagram__header {
  display: flex;
  flex-wrap: wrap;              /* caption + live badge collide on narrow screens otherwise */
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  position: relative;
}

/* On phones the full diagram would render illegibly small — keep a legible
   minimum width and let it scroll horizontally inside the card instead. */
.stack-diagram__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
@media (max-width: 43rem) {
  .stack-diagram__scroll svg {
    min-width: 40rem;
    height: auto;
  }
}
.stack-diagram__caption { color: rgb(100 116 139); }
.stack-diagram__live {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-accent);
}
.stack-diagram__pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 6px rgba(52, 211, 153, 0.7);
  animation: stack-dot-pulse 1.6s ease-in-out infinite;
}

#stack-svg {
  display: block;
  width: 100%;
  max-width: 820px;
  height: auto;
  margin: 0 auto;
  color: rgba(34, 211, 238, 0.45);   /* edges via currentColor */
  overflow: visible;
}

/* Stage labels at top of pipeline (FIELD · EDGE · BROKER · SERVER · CONSUMERS) */
.stack-svg__stage-label {
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
  font-size: 11px;
  fill: var(--color-brand-400);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  text-anchor: middle;
  font-weight: 600;
}
.stack-svg__stage-divider {
  stroke: rgba(148, 163, 184, 0.10);
  stroke-width: 1;
  stroke-dasharray: 2 4;
}

/* Edges — dashed to feel "signal-y"; the spine (main data path) is heavier */
.stack-svg__edges path {
  stroke: currentColor;
  fill: none;
  stroke-width: 1;
  stroke-dasharray: 3 4;
  opacity: 0.4;
}
.stack-svg__edges path.is-spine {
  stroke-width: 1.6;
  stroke-dasharray: 6 4;
  opacity: 0.85;
}

/* Particles — data flowing along the edges; downstream of the frontend
   they turn emerald: data becomes decisions */
.stack-svg__particles circle {
  fill: var(--color-brand-400);
  opacity: 0.9;
  filter: drop-shadow(0 0 3px rgba(34, 211, 238, 0.8));
}
.stack-svg__particles circle.is-out {
  fill: var(--color-accent);
  filter: drop-shadow(0 0 3px rgba(52, 211, 153, 0.8));
}

/* Nodes — labeled blocks, schematic style */
.stack-svg__block {
  fill: rgba(15, 23, 42, 0.92);
  stroke: rgba(34, 211, 238, 0.38);
  stroke-width: 1.25;
}
.stack-svg__block--broker {
  fill: rgba(12, 35, 48, 0.95);
  stroke: var(--color-brand-400);
  stroke-width: 1.75;
}
.stack-svg__block--consumer {
  stroke: rgba(52, 211, 153, 0.42);
}
.stack-svg__block-label {
  font-family: var(--font-mono, "JetBrains Mono"), monospace;
  font-size: 10px;
  fill: rgb(203 213 225);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-anchor: middle;
}
.stack-svg__block-label--broker {
  font-weight: 600;
  fill: var(--color-brand-300);
  letter-spacing: 0.14em;
}
.stack-svg__block-label--consumer {
  fill: rgba(110, 231, 183, 0.92);
}

/* Halo pulse behind the broker block */
.stack-svg__center-halo {
  fill: var(--color-brand-400);
  opacity: 0;
  transform-origin: center;
  transform-box: fill-box;
  animation: stack-halo 2.6s ease-out infinite;
}

.stack-diagram__cap {
  margin: 1rem auto 0;
  max-width: 460px;
  text-align: center;
  font-size: 0.8125rem;
  color: rgb(100 116 139);
  line-height: 1.55;
}

@keyframes stack-halo {
  0%   { transform: scale(1);   opacity: 0.5; }
  100% { transform: scale(2.4); opacity: 0;   }
}
@keyframes stack-dot-pulse {
  0%, 100% { opacity: 1;   transform: scale(1);    }
  50%      { opacity: 0.6; transform: scale(0.85); }
}


/* ----------------------------------------------------
   8. Scroll-reveal
   ---------------------------------------------------- */
/* Hidden state applies ONLY when JS is active (html.js is set by an inline
   script in <head>). Without JS the observer never runs, so content must
   stay visible — no-JS visitors see everything. */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .7s ease, transform .7s ease;
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}


/* ----------------------------------------------------
   Misc: slow bounce, animations from Tailwind extras
   ---------------------------------------------------- */
/* Hero scroll hint — pulses like an instrument reading, not a bouncing toy */
.scroll-hint {
  animation: scroll-hint-pulse 2.4s ease-in-out infinite;
}
@keyframes scroll-hint-pulse {
  0%, 100% { opacity: 0.45; }
  50%      { opacity: 1; }
}


/* ----------------------------------------------------
   9. Reduced motion — disable non-essential motion
   ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal, .js .reveal { opacity: 1; transform: none; }
  .skill.is-animated::before { transition: none; }
}


/* ----------------------------------------------------
   10. Print — the same URL doubles as a clean CV.
       White paper, dark text, chrome hidden, link
       targets surfaced for the publications.
   ---------------------------------------------------- */
@media print {
  *, *::before, *::after {
    background: transparent !important;
    color: #111 !important;
    box-shadow: none !important;
    text-shadow: none !important;
    animation: none !important;
    transition: none !important;
  }
  body { background: #fff !important; font-size: 11pt; }

  /* Chrome with no meaning on paper */
  body > header,                    /* fixed top bar */
  body > div[aria-hidden="true"],   /* fixed background grid */
  .tag-nav,
  #cmdk,
  .scroll-hint,
  .stack-diagram,                   /* cyan-on-white SVG would be unreadable */
  #contact-form,
  p:has([data-email-reveal]),
  #hero a[href="#experience"],      /* hero buttons */
  #hero a[href="#contact"],
  footer { display: none !important; }

  main { padding-left: 0 !important; }
  main > section { padding: 0.75rem 0 !important; min-height: 0 !important; }
  .section-band { border: 0 !important; }

  /* Scroll-reveal must never hide content on paper */
  .reveal, .js .reveal { opacity: 1 !important; transform: none !important; }

  /* Self-rated bars are meaningless in monochrome — keep the skill names */
  .skill::before, .skill::after { display: none !important; }

  .timeline-item, .edu-card, .skill-group { break-inside: avoid; }
  h2 { break-after: avoid; }

  /* Surface link targets (DOIs, company site) */
  main a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.75em;
    color: #555 !important;
  }
}