/* ═══════════════════════════════════════════════════════════════════
   SKILLS — "THE ARSENAL"

   The flagship page. Percentage bars are gone; every technology
   carries an evidence tier plus the product or role that proves it.
   ═══════════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════
   HERO — copy beside the 3D orbit
   ═══════════════════════════════════════════════ */
.arsenal-hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(2.5rem, 6vw, 4.5rem));
  padding-bottom: clamp(2rem, 5vw, 4rem);
  overflow: hidden;
  isolation: isolate;
}

.arsenal-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 65% at 50% 10%, #000, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 80% 65% at 50% 10%, #000, transparent 76%);
  z-index: -1;
}

.arsenal-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.arsenal-hero-copy {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  align-items: flex-start;
}

/* Quick summary strip under the hero copy */
.arsenal-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
  width: 100%;
  margin-top: var(--sp-2);
}

.arsenal-summary-item {
  padding: var(--sp-4);
  border-radius: var(--r-md);
  background: var(--glass-1);
  border: 1px solid var(--brd-1);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  transition: all var(--t-base);
}

.arsenal-summary-item:hover {
  background: var(--glass-3);
  border-color: var(--brd-accent);
  transform: translateY(-3px);
}

.arsenal-summary-val {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: var(--ls-tight);
  color: var(--tx-0);
  font-variant-numeric: tabular-nums;
}

.arsenal-summary-lbl {
  font-family: var(--font-mono);
  font-size: var(--fs-3xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-2);
  margin-top: 6px;
  display: block;
}

@media (max-width: 980px) {
  .arsenal-hero-grid { grid-template-columns: 1fr; }
  .orbit-stage { max-width: 420px; }
}

@media (max-width: 520px) {
  .arsenal-summary { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════
   TIER LEGEND — explains what the badges mean.
   Without this the tiers are just decoration.
   ═══════════════════════════════════════════════ */
.tier-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  align-items: center;
  justify-content: center;
  padding: var(--sp-5) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface-well);
  border: 1px solid var(--brd-1);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.tier-legend-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--tx-2);
}

.tier-legend-item b {
  color: var(--tx-1);
  font-weight: 500;
}

/* ═══════════════════════════════════════════════
   ARSENAL GRID
   ═══════════════════════════════════════════════ */
.arsenal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 430px), 1fr));
  gap: clamp(1.25rem, 2.5vw, 2rem);
  align-items: start;
}

.arsenal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  padding: clamp(1.5rem, 2.6vw, 2.25rem);
  border-radius: var(--r-2xl);
  background: var(--surface-card);
  border: 1px solid var(--brd-1);
  backdrop-filter: blur(var(--blur-lg)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(140%);
  box-shadow: var(--sh-md), var(--sh-inset);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 260ms var(--ease-out), background-color var(--t-base),
              border-color var(--t-base), box-shadow var(--t-base);
}

.arsenal-card::before {
  content: '';
  position: absolute;
  inset-inline: 12%;
  top: 0;
  height: 1px;
  background: var(--grad-rim);
  opacity: 0.5;
  transition: opacity var(--t-base), inset-inline var(--t-slow);
  pointer-events: none;
}

.arsenal-card:hover {
  background: var(--surface-card-hover);
  border-color: var(--brd-2);
  box-shadow: var(--sh-lg), var(--sh-inset), 0 0 60px rgba(var(--ac-1-rgb), 0.09);
}

.arsenal-card:hover::before { opacity: 1; inset-inline: 4%; }

/* Domain-tinted glow in the top-right corner of each card */
.arsenal-card::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -18%;
  width: 58%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--tint, var(--ac-1-rgb)), 0.16), transparent 70%);
  filter: blur(34px);
  opacity: 0.7;
  transition: opacity var(--t-slow), transform var(--t-slow);
  pointer-events: none;
  z-index: 0;
}

.arsenal-card:hover::after {
  opacity: 1;
  transform: scale(1.15);
}

.arsenal-card > * { position: relative; z-index: 1; }

/* Per-domain accent, set with a --tint override in the markup */
.arsenal-card[data-cat~='mobile']  { --tint: var(--ac-1-rgb); }
.arsenal-card[data-cat~='ai']      { --tint: var(--ac-2-rgb); }
.arsenal-card[data-cat~='cloud']   { --tint: var(--ac-3-rgb); }
.arsenal-card[data-cat~='core']    { --tint: var(--ac-4-rgb); }
.arsenal-card[data-cat~='tooling'] { --tint: 255, 184, 107; }

/* ── CARD HEADER ── */
.arsenal-head {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--brd-1);
}

.arsenal-head-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: var(--r-md);
  background: rgba(var(--tint, var(--ac-1-rgb)), 0.12);
  border: 1px solid rgba(var(--tint, var(--ac-1-rgb)), 0.34);
  color: rgb(var(--tint, var(--ac-1-rgb)));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
  transition: all var(--t-base);
}

.arsenal-card:hover .arsenal-head-icon {
  transform: translateY(-2px) scale(1.05);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
              0 0 28px rgba(var(--tint, var(--ac-1-rgb)), 0.36);
}

.arsenal-head-text { flex: 1; min-width: 0; }

.arsenal-card-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--tx-0);
  margin: 0;
  letter-spacing: var(--ls-snug);
}

.arsenal-card-sub {
  font-family: var(--font-mono);
  font-size: var(--fs-3xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tx-2);
  margin-top: 4px;
}

.arsenal-count {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  color: rgb(var(--tint, var(--ac-1-rgb)));
  padding: 0.25rem 0.55rem;
  border-radius: var(--r-full);
  background: rgba(var(--tint, var(--ac-1-rgb)), 0.1);
  border: 1px solid rgba(var(--tint, var(--ac-1-rgb)), 0.3);
  flex-shrink: 0;
}

/* ── TECH ROWS ── */
.tech-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.tech-row {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-3);
  border-radius: var(--r-md);
  border: 1px solid transparent;
  transition: background-color var(--t-base), border-color var(--t-base),
              transform var(--t-base);
}

.tech-row:hover {
  background: var(--glass-2);
  border-color: var(--brd-1);
  transform: translateX(5px);
}

/* Accent bar that grows on the left edge on hover */
.tech-row::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  translate: 0 -50%;
  width: 2px;
  height: 0;
  border-radius: var(--r-full);
  background: rgb(var(--tint, var(--ac-1-rgb)));
  box-shadow: 0 0 10px rgba(var(--tint, var(--ac-1-rgb)), 0.8);
  transition: height var(--t-base);
}

.tech-row:hover::before { height: 62%; }

.tech-row:hover .logo-tile {
  background: rgba(var(--tint, var(--ac-1-rgb)), 0.14);
  border-color: rgba(var(--tint, var(--ac-1-rgb)), 0.42);
  transform: scale(1.06);
}

.tech-row:hover .logo-tile img {
  filter: none;
  opacity: 1;
  transform: scale(1.05);
}

.tech-row:hover .logo-tile svg { color: rgb(var(--tint, var(--ac-1-rgb))); }

.tech-meta { min-width: 0; }

.tech-name {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--tx-0);
  letter-spacing: -0.01em;
}

.tech-note {
  display: block;
  font-size: var(--fs-xs);
  color: var(--tx-3);
  line-height: 1.45;
  margin-top: 2px;
  transition: color var(--t-base);
}

.tech-row:hover .tech-note { color: var(--tx-2); }

.tech-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 5px;
  flex-shrink: 0;
}

/* Where the skill was actually used — the credibility payload */
.tech-evidence {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-3xs);
  letter-spacing: 0.04em;
  color: var(--tx-3);
  white-space: nowrap;
  transition: color var(--t-base);
}

.tech-evidence svg {
  width: 10px;
  height: 10px;
  opacity: 0.7;
}

.tech-row:hover .tech-evidence { color: rgb(var(--tint, var(--ac-1-rgb))); }

@media (max-width: 560px) {
  .tech-row {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: var(--sp-2);
  }

  .tech-right {
    grid-column: 2;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: var(--sp-3);
    flex-wrap: wrap;
  }
}

/* ═══════════════════════════════════════════════
   ARCHITECTURE STACK SECTION
   ═══════════════════════════════════════════════ */
.arch-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.arch-copy {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  align-items: flex-start;
}

/* Legend mirroring the 3D layers, so the diagram stays readable
   even for someone who never hovers it */
.arch-legend {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  width: 100%;
}

.arch-legend-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  background: var(--glass-1);
  border: 1px solid var(--brd-1);
  font-size: var(--fs-sm);
  color: var(--tx-1);
  transition: all var(--t-base);
}

.arch-legend-row:hover {
  background: var(--glass-3);
  border-color: var(--brd-accent);
  transform: translateX(5px);
}

.arch-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: rgb(var(--dot, var(--ac-1-rgb)));
  box-shadow: 0 0 10px rgba(var(--dot, var(--ac-1-rgb)), 0.9);
}

.arch-legend-row code {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-3xs);
  color: var(--tx-3);
}

/* Layer tint inside the exploding 3D stack */
.stack-layer[data-tone='1'] { --tone: var(--ac-1-rgb); }
.stack-layer[data-tone='2'] { --tone: var(--ac-2-rgb); }
.stack-layer[data-tone='3'] { --tone: var(--ac-3-rgb); }
.stack-layer[data-tone='4'] { --tone: 255, 184, 107; }
.stack-layer[data-tone='5'] { --tone: var(--ac-4-rgb); }

.stack-layer .stack-layer-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--r-sm);
  background: rgba(var(--tone, var(--ac-1-rgb)), 0.14);
  border: 1px solid rgba(var(--tone, var(--ac-1-rgb)), 0.36);
  color: rgb(var(--tone, var(--ac-1-rgb)));
}

.stack-layer .stack-layer-icon img {
  width: 19px;
  height: 19px;
  filter: grayscale(1) brightness(1.9);
}

[data-theme='light'] .stack-layer .stack-layer-icon img {
  filter: grayscale(1) brightness(0.55);
}

@media (max-width: 980px) {
  .arch-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════
   PIPELINE — animated request flow
   ═══════════════════════════════════════════════ */
.pipeline {
  position: relative;
  padding: clamp(1.75rem, 3.5vw, 3rem);
  border-radius: var(--r-2xl);
  background: var(--surface-card);
  border: 1px solid var(--brd-1);
  backdrop-filter: blur(var(--blur-lg));
  -webkit-backdrop-filter: blur(var(--blur-lg));
  box-shadow: var(--sh-lg), var(--sh-inset);
  overflow: hidden;
}

.pipeline::before {
  content: '';
  position: absolute;
  inset-inline: 20%;
  top: 0;
  height: 1px;
  background: var(--grad-rim);
  opacity: 0.7;
}

.pipeline-head {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: center;
  text-align: center;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.pipeline-title {
  font-size: var(--fs-xl);
  margin: 0;
}

.pipeline-desc {
  font-size: var(--fs-sm);
  color: var(--tx-2);
  max-width: 60ch;
  margin: 0;
}

/* Nodes sit in a row with the animated SVG rail behind them */
.pipeline-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
}

/* The rail. Absolutely positioned so it threads behind the nodes. */
.pipeline-rail {
  position: absolute;
  top: 46px;
  inset-inline: 12%;
  height: 2px;
  z-index: 0;
  pointer-events: none;
}

.pipeline-rail svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.pipeline-node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-5);
  border-radius: var(--r-lg);
  background: var(--glass-2);
  border: 1px solid var(--brd-2);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  box-shadow: var(--sh-sm), var(--sh-inset);
  transform-style: preserve-3d;
  transition: transform 260ms var(--ease-out), background-color var(--t-base),
              border-color var(--t-base), box-shadow var(--t-base);
}

.pipeline-node:hover {
  background: var(--glass-4);
  border-color: var(--brd-accent);
  box-shadow: var(--sh-md), var(--sh-glow-1);
}

.pipeline-node-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.pipeline-step {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--grad-brand);
  color: var(--tx-inv);
  font-family: var(--font-mono);
  font-size: var(--fs-3xs);
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(var(--ac-1-rgb), 0.36);
}

.pipeline-node-title {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--tx-0);
  line-height: 1.35;
}

.pipeline-node-desc {
  font-size: var(--fs-xs);
  color: var(--tx-2);
  line-height: 1.55;
}

.pipeline-latency {
  font-family: var(--font-mono);
  font-size: var(--fs-3xs);
  color: var(--ac-3);
  letter-spacing: 0.05em;
}

@media (max-width: 900px) {
  .pipeline-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pipeline-rail { display: none; }
}

@media (max-width: 520px) {
  .pipeline-flow { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════
   CAPABILITY CALLOUT — closing CTA band
   ═══════════════════════════════════════════════ */
.cap-band {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.75rem, 4vw, 3rem);
  border-radius: var(--r-2xl);
  background: linear-gradient(
    120deg,
    rgba(var(--ac-1-rgb), 0.1),
    rgba(var(--ac-2-rgb), 0.08) 55%,
    transparent
  );
  border: 1px solid var(--brd-2);
  backdrop-filter: blur(var(--blur-lg));
  -webkit-backdrop-filter: blur(var(--blur-lg));
  box-shadow: var(--sh-lg), var(--sh-inset);
  overflow: hidden;
}

.cap-band-title {
  font-size: var(--fs-2xl);
  margin: 0 0 var(--sp-3);
}

.cap-band-desc {
  font-size: var(--fs-sm);
  color: var(--tx-2);
  max-width: 62ch;
  margin: 0;
}

@media (max-width: 760px) {
  .cap-band { grid-template-columns: 1fr; }
}