/* ============================================
   rust.quest // bauhaus + jewel-tones + mono
   ============================================ */

:root {
  --emerald: #064E3B;
  --sapphire: #1E40AF;
  --ruby: #991B1B;
  --topaz: #CA8A04;
  --leaf: #16A34A;
  --pearl: #F0F0E8;
  --onyx: #022C22;

  --font-head: "JetBrains Mono", "Space Mono", monospace;
  --font-body: "IBM Plex Mono", "JetBrains Mono", monospace;
  --font-emph: "Space Grotesk", "Inter", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background: var(--emerald);
  color: var(--pearl);
  font-family: var(--font-body);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.7;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
}

::selection {
  background: var(--topaz);
  color: var(--onyx);
}

/* ============================================
   THE COMPILER (100vh hero)
   ============================================ */

.compiler {
  position: relative;
  height: 100vh;
  min-height: 640px;
  background: var(--emerald);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 4rem 2rem;
}

.compiler::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 3px,
      rgba(240, 240, 232, 0.018) 3px,
      rgba(240, 240, 232, 0.018) 4px
    );
  pointer-events: none;
}

.leaf {
  position: absolute;
  width: 56px;
  height: 56px;
  opacity: 0;
  animation: leaf-fade 1.2s ease 1.4s forwards;
}
.leaf-tl { top: 32px; left: 32px; }
.leaf-tr { top: 32px; right: 32px; transform: scaleX(-1); }
.leaf-bl { bottom: 32px; left: 32px; transform: scaleY(-1); }
.leaf-br { bottom: 32px; right: 32px; transform: scale(-1, -1); }

@keyframes leaf-fade {
  from { opacity: 0; transform-origin: center; }
  to   { opacity: 1; }
}
.leaf-tr { animation-name: leaf-fade-tr; }
.leaf-bl { animation-name: leaf-fade-bl; }
.leaf-br { animation-name: leaf-fade-br; }
@keyframes leaf-fade-tr { from { opacity: 0; } to { opacity: 1; } }
@keyframes leaf-fade-bl { from { opacity: 0; } to { opacity: 1; } }
@keyframes leaf-fade-br { from { opacity: 0; } to { opacity: 1; } }

/* Bauhaus stage */
.bauhaus-stage {
  position: relative;
  width: min(92vw, 560px);
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bauhaus-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.b-triangle {
  animation: draw-stroke 0.5s ease 0.05s forwards;
}
.b-square {
  animation: draw-stroke 0.4s ease 0.4s forwards;
}
.b-circle {
  animation: draw-stroke 0.3s ease 0.7s forwards;
}

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

/* Glitch flicker on the bauhaus frame */
.bauhaus-frame.glitch-flicker {
  animation: glitch-shift 0.32s steps(6, jump-none) 1.0s 1;
}
@keyframes glitch-shift {
  0%   { transform: translate(0, 0); filter: none; }
  20%  { transform: translate(2px, -1px); filter: hue-rotate(8deg); }
  40%  { transform: translate(-2px, 1px); filter: hue-rotate(-8deg); }
  60%  { transform: translate(1px, 1px); filter: hue-rotate(6deg); }
  80%  { transform: translate(-1px, -1px); filter: hue-rotate(-6deg); }
  100% { transform: translate(0, 0); filter: none; }
}

/* Wordmark */
.wordmark {
  position: relative;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 52px);
  letter-spacing: -0.02em;
  color: var(--pearl);
  text-align: center;
  z-index: 2;
  opacity: 0;
  animation: word-in 0.6s ease 1.2s forwards;
}

.wm-prompt {
  color: var(--topaz);
  margin-right: 0.05em;
}
.wm-cursor {
  display: inline-block;
  margin-left: 0.05em;
  animation: blink 1s steps(2) infinite;
  color: var(--leaf);
}

@keyframes word-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes blink {
  50% { opacity: 0; }
}

.tagline {
  position: absolute;
  bottom: -2.5rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--pearl);
  opacity: 0;
  letter-spacing: 0.02em;
  animation: word-in 0.6s ease 1.5s forwards;
  white-space: nowrap;
}

/* Glitch text effect */
.glitch {
  position: relative;
  display: inline-block;
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.glitch::before {
  color: var(--ruby);
  clip-path: inset(0 0 60% 0);
  transform: translate(-2px, 0);
  opacity: 0;
}
.glitch::after {
  color: var(--sapphire);
  clip-path: inset(60% 0 0 0);
  transform: translate(2px, 0);
  opacity: 0;
}
.glitch.is-glitching::before {
  animation: glitch-a 0.32s steps(5, jump-none);
}
.glitch.is-glitching::after {
  animation: glitch-b 0.32s steps(5, jump-none);
}
@keyframes glitch-a {
  0%   { opacity: 0.85; clip-path: inset(0 0 78% 0); transform: translate(-2px, 0); }
  20%  { clip-path: inset(20% 0 50% 0); transform: translate(-3px, 1px); }
  40%  { clip-path: inset(40% 0 30% 0); transform: translate(2px, -1px); }
  60%  { clip-path: inset(10% 0 70% 0); transform: translate(-1px, 1px); }
  80%  { clip-path: inset(60% 0 10% 0); transform: translate(2px, 0); }
  100% { opacity: 0; clip-path: inset(0 0 60% 0); transform: translate(-2px, 0); }
}
@keyframes glitch-b {
  0%   { opacity: 0.85; clip-path: inset(70% 0 0 0); transform: translate(2px, 0); }
  20%  { clip-path: inset(40% 0 20% 0); transform: translate(3px, -1px); }
  40%  { clip-path: inset(60% 0 10% 0); transform: translate(-2px, 1px); }
  60%  { clip-path: inset(30% 0 50% 0); transform: translate(1px, -1px); }
  80%  { clip-path: inset(10% 0 60% 0); transform: translate(-2px, 0); }
  100% { opacity: 0; clip-path: inset(60% 0 0 0); transform: translate(2px, 0); }
}

.status-line {
  position: absolute;
  bottom: 4rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--pearl);
  opacity: 0;
  animation: word-in 0.6s ease 1.8s forwards;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  white-space: nowrap;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--leaf);
  box-shadow: 0 0 8px rgba(22, 163, 74, 0.7);
  animation: pulse 1.6s ease-in-out infinite;
}
.status-arrow { color: var(--topaz); }
.status-target { color: var(--leaf); }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ============================================
   CONCEPT MODULES
   ============================================ */

.concepts {
  position: relative;
  padding: 7rem 2rem 6rem;
  background: var(--emerald);
}

.section-head {
  max-width: 880px;
  margin: 0 auto 3rem;
  text-align: center;
}
.section-tag {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--topaz);
  letter-spacing: 0.1em;
  text-transform: lowercase;
}
.section-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(24px, 3.5vw, 48px);
  margin: 0.6rem 0 0.8rem;
  color: var(--pearl);
  line-height: 1.15;
}
.section-sub {
  font-family: var(--font-emph);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--pearl);
  opacity: 0.72;
  max-width: 540px;
  margin: 0 auto;
}

.leaf-border {
  height: 16px;
  width: 100%;
  max-width: 1100px;
  margin: 1.5rem auto;
  opacity: 0.55;
}
.leaf-border svg {
  width: 100%;
  height: 100%;
  display: block;
}
.leaf-border-flip svg { transform: scaleY(-1); }

.card-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.4rem;
  padding: 1rem 0;
}

.card {
  perspective: 600px;
  height: 320px;
  cursor: pointer;
}
.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.6, 0.05, 0.2, 1);
}
.card:hover .card-inner,
.card.is-flipped .card-inner {
  transform: rotateY(180deg);
}
.card-front,
.card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid rgba(240, 240, 232, 0.18);
  background: var(--onyx);
  padding: 1.6rem 1.4rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.card-front {
  align-items: flex-start;
  justify-content: space-between;
}
.card-back {
  background: linear-gradient(135deg, var(--onyx) 0%, #032018 100%);
  transform: rotateY(180deg);
  border-color: rgba(202, 138, 4, 0.4);
  justify-content: flex-start;
  gap: 0.8rem;
}

.card[data-concept="ownership"] .card-front { border-top: 3px solid var(--topaz); }
.card[data-concept="borrowing"] .card-front { border-top: 3px solid var(--sapphire); }
.card[data-concept="lifetimes"] .card-front { border-top: 3px solid var(--ruby); }
.card[data-concept="traits"]    .card-front { border-top: 3px solid var(--leaf); }

.card-num {
  font-family: var(--font-head);
  font-size: 0.78rem;
  color: var(--pearl);
  opacity: 0.55;
  letter-spacing: 0.08em;
}
.card-glyph {
  width: 56px;
  height: 56px;
  align-self: center;
  margin: 0.6rem 0;
}
.card-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--pearl);
  align-self: center;
}
.card-meta {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--pearl);
  opacity: 0.5;
  align-self: center;
  margin-top: 0.2rem;
}
.card-cta {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--topaz);
  letter-spacing: 0.08em;
  margin-top: auto;
}

.card-back-meta {
  font-family: var(--font-head);
  font-size: 0.78rem;
  color: var(--topaz);
  letter-spacing: 0.02em;
}
.card-back-body {
  font-family: var(--font-body);
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--pearl);
  opacity: 0.92;
}
.card-code {
  display: block;
  margin-top: auto;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-head);
  font-size: 0.78rem;
  color: var(--leaf);
  background: rgba(240, 240, 232, 0.04);
  border-left: 2px solid var(--leaf);
  line-height: 1.55;
  overflow: hidden;
}

/* Reveal animation when card scrolls into view */
.card {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   THE ECOSYSTEM
   ============================================ */

.ecosystem {
  position: relative;
  background: linear-gradient(180deg, var(--emerald) 0%, #053828 100%);
  padding: 7rem 2rem;
}

.ecosystem-frame {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 2rem;
  align-items: center;
  border: 1px solid rgba(22, 163, 74, 0.4);
  background: rgba(2, 44, 34, 0.45);
  padding: 2rem;
}

.eco-svg {
  width: 100%;
  height: auto;
  display: block;
}

.eco-node {
  cursor: pointer;
  transition: filter 0.25s ease;
}
.eco-node text { pointer-events: none; }
.eco-node:hover { filter: drop-shadow(0 0 8px rgba(202, 138, 4, 0.55)); }
.eco-node.is-active rect,
.eco-node.is-active circle,
.eco-node.is-active polygon {
  fill: rgba(202, 138, 4, 0.12);
}

.eco-readout {
  border-left: 2px solid var(--topaz);
  padding: 1rem 1rem 1rem 1.2rem;
  background: rgba(2, 44, 34, 0.6);
  font-family: var(--font-body);
}
.eco-readout-line {
  font-size: 0.82rem;
  margin-bottom: 0.45rem;
  color: var(--pearl);
}
.r-key {
  color: var(--topaz);
  margin-right: 0.4rem;
}
.r-val {
  color: var(--leaf);
}
.eco-readout-hint {
  margin-top: 0.8rem;
  font-size: 0.7rem;
  color: var(--pearl);
  opacity: 0.5;
  font-style: italic;
}

.legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2.4rem;
  max-width: 1100px;
  margin: 2.5rem auto 0;
  padding: 0;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
}
.legend-item svg {
  width: 22px;
  height: 22px;
}
.legend-label {
  color: var(--pearl);
  font-weight: 500;
}
.legend-meaning {
  color: var(--pearl);
  opacity: 0.6;
}
.legend-meaning::before { content: "// "; opacity: 0.7; }

@media (max-width: 760px) {
  .ecosystem-frame {
    grid-template-columns: 1fr;
  }
  .eco-readout {
    border-left: none;
    border-top: 2px solid var(--topaz);
    padding: 1rem 0 0;
  }
}

/* ============================================
   MEMORY SAFE FOOTER
   ============================================ */

.footer {
  position: relative;
  background: var(--onyx);
  color: var(--pearl);
  padding: 5rem 2rem 0;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 4px, rgba(240, 240, 232, 0.025) 4px 5px),
    repeating-linear-gradient(90deg, transparent 0 60px, rgba(22, 163, 74, 0.05) 60px 61px);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  z-index: 1;
}

.footer-block-right { text-align: right; }

.footer-stamp {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 36px);
  color: var(--leaf);
  margin-bottom: 0.8rem;
}
.footer-line {
  font-family: var(--font-body);
  font-size: 0.84rem;
  color: var(--pearl);
  opacity: 0.85;
  line-height: 1.8;
}
.footer-mute {
  opacity: 0.55;
  color: var(--leaf);
}

.footer-strip {
  position: relative;
  margin-top: 3rem;
  padding: 1.2rem 0;
  border-top: 1px solid rgba(240, 240, 232, 0.08);
  white-space: nowrap;
  overflow: hidden;
  font-family: var(--font-head);
  font-size: 0.82rem;
  color: var(--leaf);
  opacity: 0.5;
}
.strip-text {
  display: inline-block;
  padding-right: 2rem;
  animation: marquee 30s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-100%); }
}

@media (max-width: 700px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .footer-block-right { text-align: left; }
}

/* ============================================
   Responsive tweaks
   ============================================ */

@media (max-width: 540px) {
  .leaf { width: 36px; height: 36px; }
  .leaf-tl, .leaf-tr { top: 18px; }
  .leaf-bl, .leaf-br { bottom: 18px; }
  .leaf-tl, .leaf-bl { left: 18px; }
  .leaf-tr, .leaf-br { right: 18px; }
  .status-line { bottom: 2rem; font-size: 0.7rem; }
  .tagline { bottom: -2rem; font-size: 0.74rem; }
}