/* Polymath Industrial — Home page styles
 *
 * Sections in order:
 *   ── Hero
 *   ── Capabilities
 *   ── For Clients
 *   ── For Contributors
 *   ── Products
 *   ── About
 *   ── Contact
 */

/* ════════════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════════════ */

.hero {
  position: relative;
  min-height: calc(100vh - 65px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--s-8) 0 var(--s-9);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: center center;
  mask-image: radial-gradient(ellipse 70% 60% at 30% 50%, black 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 30% 50%, black 0%, transparent 80%);
  opacity: 0.4;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-6);
  max-width: 920px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  margin-bottom: var(--s-4);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) 0.1s forwards;
}
.hero-coord {
  font-size: var(--fs-xs);
  color: var(--rust);
  letter-spacing: var(--tracking-wide);
}
.hero-coord-label {
  font-size: var(--fs-xs);
  color: var(--bone-2);
  letter-spacing: 0.15em;
}
.hero-meta::before {
  content: "";
  display: block;
  width: 50px;
  height: 1px;
  background: var(--rust);
}

.hero-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2.5rem, 7vw, var(--fs-4xl));
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: var(--s-6);
  color: var(--bone-0);
}
.hero-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--dur-slow) var(--ease-out) calc(0.15s + (var(--i) * 0.1s)) forwards;
}
.hero-line em {
  font-style: italic;
  font-weight: 700;
  color: var(--rust-bright);
  font-family: "Georgia", "Times New Roman", serif;
  letter-spacing: -0.04em;
}

.hero-lede {
  max-width: 56ch;
  font-size: clamp(var(--fs-md), 1.6vw, var(--fs-lg));
  color: var(--fg-dim);
  line-height: 1.55;
  margin-bottom: var(--s-7);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--dur-slow) var(--ease-out) calc(0.15s + (var(--i) * 0.1s)) forwards;
}
.hero-lede .hl {
  color: var(--bone-warm);
  font-size: 0.92em;
  padding: 0 0.15em;
  border-bottom: 1px dotted var(--bone-3);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  margin-bottom: var(--s-8);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--dur-slow) var(--ease-out) calc(0.15s + (var(--i) * 0.1s)) forwards;
}

.hero-credentials {
  display: flex;
  align-items: center;
  gap: var(--s-6);
  padding-top: var(--s-5);
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--dur-slow) var(--ease-out) calc(0.15s + (var(--i) * 0.1s)) forwards;
}
.cred {
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
}
.cred-num {
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--rust-bright);
  letter-spacing: var(--tracking-tight);
}
.cred-label {
  font-size: var(--fs-xs);
  color: var(--bone-2);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}
.cred-divider {
  width: 1px;
  height: 28px;
  background: var(--border);
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Hero capability graph - absolute positioned on right side, desktop only */
.hero-diagram {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 480px;
  height: 480px;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  animation: fadeDiagram 1.4s var(--ease-out) 0.4s forwards;
}
@keyframes fadeDiagram {
  to { opacity: 0.85; }
}

.diagram-nodes .node {
  transform-origin: center;
  transform-box: fill-box;
  animation: pulseNode 3s ease-in-out infinite;
}
.diagram-nodes .n1 { animation-delay: 0s; }
.diagram-nodes .n2 { animation-delay: 0.5s; }
.diagram-nodes .n3 { animation-delay: 1.0s; }
.diagram-nodes .n4 { animation-delay: 1.5s; }
.diagram-nodes .n5 { animation-delay: 2.0s; }
@keyframes pulseNode {
  0%, 100% { r: 5; opacity: 1; }
  50%      { r: 7; opacity: 0.6; }
}

.diagram-lines .line {
  stroke-dasharray: 2 3;
  stroke-dashoffset: 0;
  animation: dashMove 4s linear infinite;
}
@keyframes dashMove {
  to { stroke-dashoffset: -10; }
}

@media (max-width: 1100px) {
  .hero-diagram { right: -180px; opacity: 0.35 !important; }
}
@media (max-width: 720px) {
  .hero-diagram { display: none; }
}

/* ════════════════════════════════════════════════════════════════════
   CAPABILITIES
   ════════════════════════════════════════════════════════════════════ */

.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: var(--s-6);
}

.cap-card {
  background: var(--ground-1);
  padding: var(--s-6);
  position: relative;
  transition: background var(--dur-base) var(--ease-out);
  cursor: default;
  overflow: hidden;
}
.cap-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0;
  height: 2px;
  background: var(--rust);
  transition: width var(--dur-base) var(--ease-out);
}
.cap-card:hover { background: var(--ground-2); }
.cap-card:hover::before { width: 100%; }

.cap-num {
  font-size: var(--fs-xs);
  color: var(--bone-3);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--s-5);
}
.cap-card:hover .cap-num { color: var(--rust); }

.cap-title {
  font-size: var(--fs-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--s-4);
  color: var(--bone-0);
}

.cap-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.cap-list li {
  font-size: var(--fs-xs);
  color: var(--fg-mute);
  padding-left: var(--s-4);
  position: relative;
  letter-spacing: var(--tracking-mono);
}
.cap-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--rust);
  opacity: 0.7;
}

/* ════════════════════════════════════════════════════════════════════
   FOR CLIENTS
   ════════════════════════════════════════════════════════════════════ */

.section-clients { background: var(--ground-1); }

.clients-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--s-8);
  align-items: start;
}
@media (max-width: 880px) {
  .clients-layout { grid-template-columns: 1fr; }
}

.fit-heading {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--rust);
  margin-bottom: var(--s-4);
  display: flex;
  align-items: center;
  gap: var(--s-3);
}
.fit-heading::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--rust);
}

.fit-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  margin-bottom: var(--s-7);
}
.fit-list li {
  padding-left: var(--s-5);
  position: relative;
  color: var(--fg-dim);
  line-height: 1.5;
}
.fit-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--forest-bright);
  font-weight: 700;
  font-size: var(--fs-md);
}
.fit-list em { color: var(--bone-warm); font-style: italic; }

.clients-card {
  background: var(--ground-0);
  border: 1px solid var(--border);
  padding: var(--s-7);
  position: relative;
  box-shadow: var(--shadow-md);
}
.clients-card::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 40px;
  height: 1px;
  background: var(--rust);
}
.clients-card::after {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 1px;
  height: 40px;
  background: var(--rust);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--s-5);
}
.card-id {
  font-size: var(--fs-xs);
  color: var(--bone-3);
  letter-spacing: var(--tracking-wide);
}

.card-title {
  font-size: var(--fs-xl);
  font-weight: 600;
  margin-bottom: var(--s-6);
  letter-spacing: var(--tracking-tight);
}

.engagement-list {
  list-style: none;
  padding: 0;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}
.engagement-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-4);
  align-items: start;
  padding-bottom: var(--s-5);
  border-bottom: 1px dashed var(--border);
}
.engagement-list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}
.engagement-list li > div {
  color: var(--fg-dim);
  font-size: var(--fs-sm);
  line-height: 1.6;
}
.engagement-list strong {
  color: var(--bone-0);
  font-weight: 600;
  display: block;
  margin-bottom: var(--s-1);
}
.step-num {
  font-size: var(--fs-md);
  color: var(--rust);
  font-weight: 500;
  padding: var(--s-1) var(--s-2);
  border: 1px solid var(--rust-deep);
  border-radius: 2px;
  min-width: 36px;
  text-align: center;
}

.clients-cta {
  margin-top: var(--s-5);
}

/* ════════════════════════════════════════════════════════════════════
   FOR CONTRIBUTORS
   ════════════════════════════════════════════════════════════════════ */

.contrib-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--s-8);
  align-items: center;
}
@media (max-width: 880px) {
  .contrib-layout { grid-template-columns: 1fr; }
  .contrib-graphic { max-width: 360px; margin: 0 auto; }
}

.contrib-graphic svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 40px rgba(74, 107, 74, 0.15));
}

.contrib-skills {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--s-3);
  margin: var(--s-6) 0 var(--s-7);
}
.contrib-skills li {
  font-size: var(--fs-sm);
  color: var(--fg-dim);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  background: var(--ground-1);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.contrib-skills li:hover { border-color: var(--forest-bright); }
.contrib-skills .dot {
  width: 6px; height: 6px;
  background: var(--forest-bright);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════════════
   PRODUCTS
   ════════════════════════════════════════════════════════════════════ */

.section-products { background: var(--ground-1); }

.product-card {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--s-7);
  align-items: center;
  background: var(--ground-0);
  border: 1px solid var(--border);
  padding: var(--s-7);
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.product-card:hover {
  border-color: var(--rust);
  transform: translateY(-2px);
}
.product-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 50%, rgba(184, 84, 42, 0.05), transparent 60%);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
  pointer-events: none;
}
.product-card:hover::after { opacity: 1; }

.product-tag {
  font-size: var(--fs-xs);
  color: var(--rust);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--s-4);
}

.product-name {
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-3xl));
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: var(--s-4);
  color: var(--bone-0);
}

.product-blurb {
  font-size: var(--fs-md);
  color: var(--fg-dim);
  line-height: 1.55;
  margin-bottom: var(--s-5);
  max-width: 56ch;
}

.product-link {
  color: var(--rust-bright);
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  transition: color var(--dur-fast) var(--ease-out);
}
.product-link .arr {
  transition: transform var(--dur-base) var(--ease-out);
}
.product-card:hover .product-link .arr { transform: translateX(6px); }

.product-visual svg {
  width: 100%;
  max-width: 240px;
  margin-left: auto;
}

@media (max-width: 720px) {
  .product-card { grid-template-columns: 1fr; }
  .product-visual { display: none; }
}

/* ════════════════════════════════════════════════════════════════════
   ABOUT
   ════════════════════════════════════════════════════════════════════ */

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--s-8);
  align-items: start;
}
@media (max-width: 880px) { .about-layout { grid-template-columns: 1fr; } }

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}
.about-text p {
  color: var(--fg-dim);
  font-size: var(--fs-md);
  line-height: 1.65;
  max-width: 62ch;
}
.about-text strong {
  color: var(--bone-0);
  font-weight: 600;
}

/* ════════════════════════════════════════════════════════════════════
   CONTACT
   ════════════════════════════════════════════════════════════════════ */

.section-contact {
  background: var(--ground-1);
  padding-bottom: var(--s-10);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-8);
  align-items: center;
}
@media (max-width: 880px) { .contact-layout { grid-template-columns: 1fr; } }

.contact-title { font-size: clamp(var(--fs-xl), 3.5vw, var(--fs-2xl)); }

.contact-email-card {
  display: block;
  background: var(--ground-0);
  border: 1px solid var(--border);
  padding: var(--s-7) var(--s-6);
  position: relative;
  transition: all var(--dur-base) var(--ease-out);
  overflow: hidden;
}
.contact-email-card:hover {
  border-color: var(--rust);
  background: var(--ground-2);
}
.contact-email-card::before {
  content: "@";
  position: absolute;
  top: -30px;
  right: -10px;
  font-family: var(--font-sans);
  font-size: 220px;
  font-weight: 100;
  color: var(--rust);
  opacity: 0.04;
  line-height: 1;
  transition: opacity var(--dur-base) var(--ease-out);
}
.contact-email-card:hover::before { opacity: 0.10; }

.email-label {
  font-size: var(--fs-xs);
  color: var(--bone-2);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--s-3);
}
.email-address {
  font-family: var(--font-mono);
  font-size: clamp(var(--fs-md), 2.5vw, var(--fs-xl));
  color: var(--bone-0);
  margin-bottom: var(--s-5);
  word-break: break-all;
  letter-spacing: -0.01em;
}
.email-action {
  font-size: var(--fs-xs);
  color: var(--rust-bright);
  letter-spacing: var(--tracking-wide);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.email-action .arr { transition: transform var(--dur-base) var(--ease-out); }
.contact-email-card:hover .email-action .arr { transform: translateX(4px); }

/* ════════════════════════════════════════════════════════════════════
   REVEAL ON SCROLL
   ════════════════════════════════════════════════════════════════════ */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease-out),
              transform 0.8s var(--ease-out);
}
[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}