/* ==========================================
   Russ Blackburn Portfolio
========================================== */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap");

:root {
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;

  --bg: #ffffff;
  --surface: #f8f8f8;
  --text: #111111;
  --muted: #666666;
  --accent: #ee0000;
  --border: #e5e5e5;

  --max-width: 1200px;
  --radius: 12px;
  --transition: 0.25s ease;
}

[data-theme="dark"] {
  --bg: #0f1115;
  --surface: #171b22;
  --text: #f5f5f5;
  --muted: #a0a0a0;
  --accent: #ff4d4d;
  --border: #2d333b;
}

/* ==========================================
   Base
========================================== */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;

  background: var(--bg);
  color: var(--text);

  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;

  transition:
    background var(--transition),
    color var(--transition);
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  letter-spacing: -0.028em;
}

p,
li {
  text-wrap: pretty;
}

strong,
b {
  font-weight: 700;
}

h1,
h2,
h3,
.logo,
.case-metrics span,
.case-hero__metrics span {
  font-family: var(--font-sans);
}

img {
  max-width: 100%;
  display: block;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 2000;
  transform: translateY(-150%);
  background: var(--text);
  color: var(--bg);
  padding: .75rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ==========================================
   Layout
========================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ==========================================
   Header
========================================== */

header {
  position: sticky;
  top: 0;

  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);

  border-bottom: 1px solid var(--border);

  z-index: 1000;
}

[data-theme="dark"] header {
  background: rgba(15,17,21,.92);
}

.navbar {
  max-width: var(--max-width);

  margin: 0 auto;
  padding: 1rem 2rem;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  width: 80px;
  height: auto;
  transition: opacity .3s ease;
}

[data-theme="dark"] .logo {
  opacity: 1;
}

nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;

  transition: color .25s ease;
}

nav a:hover {
  color: var(--accent);
}

.theme-toggle {
  background: none;
  border: none;

  color: var(--text);

  font-size: 1.2rem;
  cursor: pointer;
}

/* ==========================================
   Hero
========================================== */

.hero {
  padding: 7rem 0 5rem;
}

.hero h1 {
  font-family: var(--font-sans);
  font-weight: 800;

  font-size: clamp(3.5rem, 7vw, 6rem);

  line-height: .95;

  max-width: 1100px;

  margin-bottom: 2rem;
}

.hero p {
  max-width: 850px;

  font-size: 1.35rem;
  color: var(--muted);

  margin-bottom: 1.5rem;
}

.hero .button {
  margin-top: 1rem;
}

/* ==========================================
   Impact Snapshot
========================================== */

.impact-section {
  padding: 2rem 0 5rem;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 1.5rem;
}

.impact-card {
  padding: 2rem;

  border: 1px solid var(--border);
  border-radius: 14px;

  background: var(--surface);
}

.impact-number {
  display: block;

  font-family: var(--font-sans);
  font-weight: 800;

  font-size: 3rem;
  line-height: 1;

  color: var(--accent);

  margin-bottom: .75rem;
}

.impact-label {
  font-size: .95rem;
  font-weight: 600;
}

/* ==========================================
   Specializations
========================================== */

.specializations {
  padding: 5rem 0;
}

.specialization-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 2rem;
}

.specialization-card {
  border-top: 4px solid var(--accent);
  padding-top: 1rem;
}

.specialization-card h3 {
  font-family: var(--font-sans);
  margin-bottom: .75rem;
}

.specialization-card p {
  color: var(--muted);
}

/* ==========================================
   Interior Pages
========================================== */

.page-header {
  width: 100%;
  max-width: 1200px;

  margin: 0 auto;
  padding: 5rem 2rem 3rem;
}

.page-header h1 {
  font-family: var(--font-sans);

  font-size: clamp(4rem, 7vw, 6rem);
  line-height: 1.05;

  margin-bottom: 1rem;
}

.page-header p {
  max-width: 750px;

  font-size: 1.25rem;
  color: var(--muted);
}

.content-page {
  max-width: 900px;

  margin: 0 auto;
  padding: 4rem 2rem;
}

.content-page h1,
.content-page h2 {
  font-family: var(--font-sans);
}

/* ==========================================
   Flagship Case Study
========================================== */

.case-study {
  --case-bg: #fbfaf7;
  --case-ink: #151313;
  --case-soft: #f1ebe3;
  --case-card: #ffffff;
  --case-muted: #655f57;
  --case-rule: #ddd4c8;
  --case-rule-soft: #ebe4da;
  --case-green: #2e9d78;
  --case-gold: #d69a18;
  --case-cyan: #167a91;
  --case-illustration-bg: var(--case-bg);
  --case-illustration-surface: var(--case-card);
  --case-illustration-soft: var(--case-soft);
  --case-illustration-ink: var(--case-ink);
  --case-illustration-muted: var(--case-muted);
  --case-illustration-rule: var(--case-rule);
  --case-illustration-accent: var(--accent);
  --case-illustration-success: var(--case-green);
  --case-illustration-warning: var(--case-gold);
  --case-illustration-radius: 8px;
  --case-illustration-stroke: 2px;
  --case-illustration-shadow: 0 24px 70px rgba(44, 33, 20, .1);

  background:
    linear-gradient(180deg, var(--case-bg) 0%, var(--bg) 48%);
  color: var(--case-ink);
}

[data-theme="dark"] .case-study {
  --case-bg: #121110;
  --case-ink: #f7f2ec;
  --case-soft: #1d1a17;
  --case-card: #171513;
  --case-muted: #c6bdb3;
  --case-rule: #3a332d;
  --case-rule-soft: #28231f;
  --case-green: #69c9a4;
  --case-gold: #f1c457;
  --case-cyan: #65bfd1;
  --case-illustration-shadow: 0 24px 70px rgba(0, 0, 0, .34);
}

.case-shell {
  width: min(100% - 3rem, 1180px);
  margin: 0 auto;
}

.case-hero {
  width: min(100% - 3rem, 920px);
  min-height: auto;
  display: block;
  margin: 0 auto;
  padding: clamp(5.5rem, 9vw, 7rem) 0 clamp(4rem, 7vw, 5.5rem);
}

.case-hero--editorial {
  grid-template-columns: 1fr;
}

.case-eyebrow,
.case-kicker {
  margin: 0 0 1.5rem;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.case-hero h1,
.case-section h2,
.case-system-map h2,
.case-dashboard h2,
.case-reflection h2 {
  font-family: var(--font-sans);
  letter-spacing: 0;
}

.case-hero h1 {
  max-width: 900px;
  margin: 0 0 2rem;
  font-size: clamp(3rem, 5vw, 4.75rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.case-dek {
  max-width: 680px;
  margin: 0;
  color: var(--case-muted);
  font-size: clamp(1.15rem, 1.7vw, 1.25rem);
  line-height: 1.7;
}

.case-hero__metrics {
  display: none;
}

.case-hero__metrics article {
  min-height: 150px;
  padding: clamp(1rem, 2vw, 1.45rem);
  border-top: 1px solid var(--case-rule);
}

.case-hero__metrics span {
  display: block;
  letter-spacing: -0.04em;
  margin-bottom: .7rem;
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: clamp(2.25rem, 3.2vw, 3.1rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  white-space: nowrap;
}

.case-hero__metrics p {
  margin: 0;
  color: var(--case-muted);
  font-size: .9rem;
  line-height: 1.35;
}

.case-hero__visual {
  display: none;
}

.case-hero__visual img,
.case-hero__visual svg,
.case-system-map svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 28px 70px rgba(44, 33, 20, .16));
}

[data-theme="dark"] .case-hero__visual img,
[data-theme="dark"] .case-hero__visual svg,
[data-theme="dark"] .case-system-map svg {
  filter: drop-shadow(0 28px 70px rgba(0, 0, 0, .36));
}

.case-illustration-frame {
  border: 1px solid var(--case-rule);
  border-radius: var(--case-illustration-radius);
  background:
    radial-gradient(circle at 18% 18%, rgba(238, 0, 0, .16), transparent 30%),
    linear-gradient(145deg, var(--case-card), var(--case-soft));
  box-shadow: var(--case-illustration-shadow);
}

.case-illustration {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--case-rule-soft);
  border-radius: var(--case-illustration-radius);
  background: var(--case-illustration-bg);
  box-shadow: var(--case-illustration-shadow);
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 1px solid var(--case-rule-soft);
  border-bottom: 1px solid var(--case-rule-soft);
}

.case-metrics article {
  min-height: 190px;
  padding: clamp(1.5rem, 3vw, 2.4rem);
  border-right: 1px solid var(--case-rule-soft);
}

.case-metrics article:last-child {
  border-right: 0;
}

.case-metrics span {
  display: block;
  white-space: nowrap;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  margin-bottom: 1rem;
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  font-weight: 800;
  line-height: .9;
}

.case-metrics p {
  margin: 0;
  color: var(--case-muted);
  font-size: .98rem;
  line-height: 1.45;
}

.case-section,
.case-system-map,
.case-dashboard {
  padding: clamp(6rem, 11vw, 10rem) 0;
}

.case-two-column {
  display: grid;
  grid-template-columns: minmax(280px, .78fr) minmax(0, 1.22fr);
  gap: clamp(2.5rem, 7vw, 7rem);
}

.case-section h2,
.case-system-map h2,
.case-dashboard h2,
.case-reflection h2 {
  margin: 0;
  max-width: 900px;
  font-size: clamp(2.35rem, 4.7vw, 4.55rem);
  line-height: 1.02;
}

.case-section__intro {
  max-width: 920px;
  margin-bottom: clamp(2.5rem, 5vw, 4.25rem);
}

.case-section__intro p:not(.case-kicker),
.case-prose p,
.case-prose li,
.case-reflection p {
  color: var(--case-muted);
  font-size: 1.08rem;
  line-height: 1.82;
}

.case-prose p:first-child {
  margin-top: 0;
}

.case-prose ul,
.case-prose ol {
  padding-left: 1.2rem;
}

.case-chip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.case-chip-grid span,
.case-status {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .85rem 1rem;
  border: 1px solid var(--case-rule-soft);
  border-radius: 8px;
  background: transparent;
  color: var(--case-ink);
  font-weight: 700;
  line-height: 1.25;
}

.case-callout,
.case-quote {
  margin: clamp(2.5rem, 5vw, 4rem) 0 0;
  padding: clamp(1.75rem, 4vw, 3rem);
  border-left: 3px solid var(--accent);
  background: var(--case-soft);
}

.case-callout {
  color: var(--case-muted);
  font-size: 1.08rem;
}

.case-split-list,
.case-feature-grid,
.case-evidence-grid,
.case-outcomes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.4rem);
}

.case-split-list article,
.case-feature-grid article,
.case-evidence-grid article,
.case-outcomes article {
  padding: clamp(1.65rem, 3.2vw, 2.35rem);
  border: 1px solid var(--case-rule-soft);
  border-radius: 8px;
  background: var(--case-card);
}

.case-evidence-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-evidence-grid span {
  display: block;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
  margin-bottom: 1rem;
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: clamp(2.3rem, 4vw, 3.8rem);
  font-weight: 800;
  line-height: .9;
}

.case-evidence-grid h3 {
  margin: 0 0 .75rem;
  font-family: var(--font-sans);
  font-size: 1.35rem;
  line-height: 1.1;
}

.case-evidence-grid p {
  margin-bottom: 0;
  color: var(--case-muted);
}

.case-feature-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-split-list h3,
.case-feature-grid h3,
.case-outcomes h3,
.case-dashboard__grid h3 {
  margin-top: 0;
  font-family: var(--font-sans);
  font-size: 1.45rem;
  line-height: 1.1;
}

.case-split-list ul,
.case-feature-grid ul,
.case-outcomes ul {
  margin-bottom: 0;
  padding-left: 1.15rem;
  color: var(--case-muted);
}

.case-feature-grid p,
.case-outcomes li,
.case-split-list li,
.case-quote p {
  color: var(--case-muted);
}

.case-quote p {
  max-width: 900px;
  margin: 0;
  font-size: clamp(1.25rem, 2.4vw, 2rem);
  line-height: 1.35;
}

.case-quote p + p {
  margin-top: 1rem;
}

.case-system-map {
  border-top: 1px solid var(--case-rule-soft);
  border-bottom: 1px solid var(--case-rule-soft);
}

.case-architecture {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, .5fr);
  gap: clamp(1rem, 2vw, 1.5rem);
  align-items: stretch;
  margin-top: 2rem;
}

.case-architecture__canvas {
  overflow: hidden;
  border: 1px solid var(--case-rule-soft);
  border-radius: 8px;
  background: transparent;
}

.case-architecture__canvas svg {
  filter: none;
}

.case-ecosystem-svg {
  color: var(--case-ink);
}

.case-map-lane text {
  fill: var(--case-muted);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.case-map-lane path {
  fill: none;
  stroke: var(--case-rule);
  stroke-width: 2;
  stroke-dasharray: 10 14;
}

.case-map-node {
  cursor: pointer;
  outline: none;
}

.case-map-node rect {
  fill: var(--case-card);
  stroke: var(--case-rule);
  stroke-width: 2;
  transition:
    fill .2s ease,
    stroke .2s ease,
    filter .2s ease;
}

.case-map-node text {
  fill: var(--case-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  pointer-events: none;
}

.case-map-node text:first-of-type {
  font-size: 20px;
  font-weight: 800;
}

.case-map-node text:not(:first-of-type) {
  fill: var(--case-muted);
}

.case-map-node:hover rect,
.case-map-node:focus-visible rect,
.case-map-node.is-active rect {
  fill: var(--case-soft);
  stroke: var(--accent);
  filter: drop-shadow(0 16px 28px rgba(44, 33, 20, .18));
}

.case-map-node:focus-visible rect {
  stroke-width: 4;
}

.case-map-node--warning rect {
  fill: #fff0f0;
  stroke: var(--accent);
}

.case-map-flow {
  stroke: var(--case-ink);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.case-map-flow path {
  opacity: .78;
  stroke-dasharray: 180;
  stroke-dashoffset: 180;
}

.case-system-map.is-visible .case-map-flow path {
  animation: casePathDraw 1.15s cubic-bezier(.22, 1, .36, 1) forwards;
}

.case-system-map.is-visible .case-map-flow path:nth-child(2) {
  animation-delay: .08s;
}

.case-system-map.is-visible .case-map-flow path:nth-child(3) {
  animation-delay: .16s;
}

.case-system-map.is-visible .case-map-flow path:nth-child(4) {
  animation-delay: .24s;
}

.case-system-map.is-visible .case-map-flow path:nth-child(5) {
  animation-delay: .32s;
}

.case-system-map.is-visible .case-map-flow path:nth-child(6) {
  animation-delay: .4s;
}

.case-system-map.is-visible .case-map-flow path:nth-child(n+7) {
  animation-delay: .48s;
}

@keyframes casePathDraw {
  to {
    stroke-dashoffset: 0;
  }
}

.case-architecture__panel {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--case-rule-soft);
  border-radius: 8px;
  background: var(--case-card);
}

.case-architecture__controls {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--case-rule-soft);
  border-bottom: 1px solid var(--case-rule-soft);
}

.case-architecture__controls button {
  min-height: 48px;
  border: 0;
  background: transparent;
  color: var(--case-muted);
  cursor: pointer;
  font: inherit;
  font-size: .78rem;
  font-weight: 800;
}

.case-architecture__controls button:hover,
.case-architecture__controls button.is-active {
  background: var(--case-ink);
  color: var(--case-bg);
}

.case-architecture__copy {
  padding: clamp(1.4rem, 3vw, 2rem);
}

.case-architecture__label {
  margin: 0 0 .9rem;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.case-architecture__copy h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.65rem, 2.8vw, 2.55rem);
  line-height: 1;
}

.case-architecture__copy p:last-child {
  margin-bottom: 0;
  color: var(--case-muted);
}

.case-map-feedback,
.case-map-signal {
  transition: opacity .25s ease;
}

.case-map-node {
  opacity: .64;
  transform-origin: center;
  transition:
    opacity .25s ease,
    transform .25s ease;
}

.case-map-node:hover,
.case-map-node:focus-visible,
.case-map-node.is-active {
  opacity: 1;
  transform: translateY(-3px);
}

.case-system-map[data-active-step="barrier"] .case-map-feedback,
.case-system-map[data-active-step="provisioning"] .case-map-signal {
  opacity: 1;
}

.case-system-map:not([data-active-step="barrier"]) .case-map-feedback {
  opacity: .45;
}

.case-system-map:not([data-active-step="provisioning"]) .case-map-signal {
  opacity: .82;
}

.case-map-signal rect {
  fill: var(--case-ink);
}

.case-map-signal text {
  fill: var(--case-card);
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 800;
  text-anchor: middle;
}

.case-map-signal text:first-of-type {
  fill: var(--accent);
  font-family: var(--font-sans);
  font-size: 44px;
  font-variant-numeric: tabular-nums;
}

.case-dashboard__frame {
  overflow: hidden;
  border: 1px solid var(--case-rule-soft);
  border-radius: 8px;
  background: var(--case-card);
  box-shadow: 0 22px 60px rgba(44, 33, 20, .09);
}

.case-dashboard__nav {
  display: flex;
  gap: .55rem;
  padding: 1rem;
  background: #151313;
}

.case-dashboard__nav span {
  width: .8rem;
  height: .8rem;
  border-radius: 50%;
  background: #ee0000;
}

.case-dashboard__nav span:nth-child(2) {
  background: var(--case-gold);
}

.case-dashboard__nav span:nth-child(3) {
  background: var(--case-green);
}

.case-dashboard__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--case-rule-soft);
}

.case-dashboard__grid article {
  min-height: 220px;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  background: var(--case-card);
}

.case-dashboard__grid p {
  margin: 0 0 .75rem;
  color: var(--case-muted);
  font-weight: 700;
}

.case-dashboard__grid strong {
  display: block;
  overflow-wrap: anywhere;
  min-height: 70px;
  font-family: var(--font-sans);
  font-size: clamp(1.55rem, 2vw, 2.15rem);
  line-height: 1;
}

.case-progress {
  display: block;
  height: 12px;
  margin-top: 1.6rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--case-soft);
}

.case-progress span {
  display: block;
  height: 100%;
  background: var(--case-green);
}

.case-progress--64 span {
  width: 64%;
}

.case-status {
  min-height: auto;
  margin-top: 1.4rem;
}

.case-status--ready {
  border-color: var(--case-green);
  color: var(--case-green);
}

.case-status--expired {
  border-color: var(--case-gold);
  color: var(--case-gold);
}

.case-status--review {
  border-color: var(--accent);
  color: var(--accent);
}

.case-reflection {
  max-width: 940px;
  padding-bottom: 2rem;
}

.case-reflection h2 {
  margin-bottom: 2rem;
}

.case-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity .5s ease,
    transform .5s ease;
}

.case-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  .case-reveal {
    opacity: 1;
    transform: none;
  }

  .case-map-flow path {
    stroke-dashoffset: 0;
  }
}

/* ==========================================
   Section Titles
========================================== */

.section-title {
  font-family: var(--font-sans);

  font-size: 2.5rem;
  margin-bottom: 2rem;
}

/* ==========================================
   Projects
========================================== */

.projects {
  padding: 5rem 0;
}

.project-grid {
  display: grid;

  grid-template-columns:
  repeat(auto-fit, minmax(min(100%, 420px), 1fr));

  gap: 2rem;
}

.project-card {
  background: var(--surface);

  border: 1px solid var(--border);

  border-radius: var(--radius);

  overflow: hidden;

  transition:
    transform .25s ease,
    border-color .25s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}

.project-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.project-content {
  padding: 1.75rem;
}

.project-content h3 {
  margin-top: 0;
  margin-bottom: .75rem;

  font-size: 1.4rem;
}

.project-content p {
  color: var(--muted);
}

/* ==========================================
   Buttons
========================================== */

.button {
  display: inline-block;

  background: var(--accent);
  color: white;

  text-decoration: none;

  padding: .9rem 1.6rem;

  border-radius: 8px;

  font-weight: 500;

  transition: opacity .2s ease;
}

.button:hover {
  opacity: .85;
}

/* ==========================================
   Experience Snapshot
========================================== */

.experience-section {
  padding: 6rem 0;
}

.experience-summary {
  max-width: 850px;
  margin: 0 auto;
  text-align: center;
}

.experience-summary p {
  font-size: 1.15rem;
  color: var(--muted);
}

/* ==========================================
   Contact
========================================== */

.social-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.linkedin-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ==========================================
   Footer
========================================== */

footer {
  border-top: 1px solid var(--border);

  margin-top: 6rem;
  padding: 2rem;

  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.footer-content p {
  margin: 0;
  color: var(--muted);
  font-size: .95rem;
}

.footer-content p:last-child {
  white-space: nowrap;
}

.footer-content a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.footer-content a:hover {
  color: var(--accent);
}


@media (max-width: 1024px) {
  .impact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-hero,
  .case-hero--editorial {
    width: min(100% - 2.5rem, 920px);
    min-height: auto;
  }

  .case-architecture {
    grid-template-columns: 1fr;
  }

  .case-dashboard__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-feature-grid--three,
  .case-evidence-grid,
  .case-chip-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ==========================================
   Mobile
========================================== */

@media (max-width: 768px) {

  .navbar {
    flex-direction: column;
    gap: 1rem;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  .hero {
    padding: 4rem 0;
  }

  .hero h1 {
    font-size: 3.5rem;
  }

  .impact-grid {
    grid-template-columns: repeat(2,1fr);
  }

  .specialization-grid {
    grid-template-columns: 1fr;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .footer-content p:last-child {
    white-space: normal;
  }

  .case-shell {
    width: min(100% - 2rem, 1180px);
  }

  .case-hero {
    width: min(100% - 2rem, 920px);
    min-height: auto;
    padding: 4rem 0 3rem;
  }

  .case-hero--editorial {
    grid-template-columns: 1fr;
  }

  .case-hero h1 {
    font-size: clamp(2.8rem, 11vw, 4rem);
    line-height: 1.04;
  }

  .case-hero__visual {
    display: none;
  }

  .case-hero__metrics {
    grid-template-columns: 1fr;
  }

  .case-hero__metrics article {
    min-height: auto;
  }

  .case-metrics,
  .case-two-column,
  .case-split-list,
  .case-feature-grid,
  .case-feature-grid--three,
  .case-evidence-grid,
  .case-outcomes,
  .case-dashboard__grid {
    grid-template-columns: 1fr;
  }

  .case-metrics article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--case-rule);
  }

  .case-metrics article:last-child {
    border-bottom: 0;
  }

  .case-chip-grid {
    grid-template-columns: 1fr;
  }

  .case-section,
  .case-system-map,
  .case-dashboard {
    padding: 4rem 0;
  }

  .case-section h2,
  .case-system-map h2,
  .case-dashboard h2,
  .case-reflection h2 {
    font-size: clamp(2.25rem, 10vw, 3.4rem);
  }

  .case-system-map {
    padding-bottom: 3rem;
  }

  .case-architecture {
    grid-template-columns: 1fr;
  }

  .case-architecture__canvas {
    overflow-x: auto;
  }

  .case-architecture__canvas svg {
    min-width: 860px;
  }

  .case-architecture__controls {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-dashboard__grid article {
    min-height: auto;
  }

  .case-dashboard__grid strong {
    min-height: auto;
  }
}