:root {
  --tier-paper: #ffffff;
  --tier-blueprint: #4d7ab8;
  --tier-red: #a63e33;
  --tier-amber: #ad8c2e;
  --tier-purple: #66338c;

  --bg: var(--tier-paper);
  --fg: #111111;
  --fg-muted: #555555;
  --grid-line: rgba(0, 0, 0, 0.09);
  --border: rgba(0, 0, 0, 0.18);
  --accent: #111111;
  --block-fill: rgba(77, 122, 184, 0.55);
  --block-stroke: rgba(77, 122, 184, 0.9);
  --nav-height: 52px;
  --max-width: 1080px;
  --container-pad: 1.35rem;
  --mono: "IBM Plex Mono", "Consolas", monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
}

[data-tier="2"] {
  --bg: var(--tier-blueprint);
  --fg: #f5f5f5;
  --fg-muted: rgba(255, 255, 255, 0.72);
  --grid-line: rgba(255, 255, 255, 0.14);
  --border: rgba(255, 255, 255, 0.28);
  --accent: #ffffff;
  --block-fill: rgba(255, 255, 255, 0.35);
  --block-stroke: rgba(255, 255, 255, 0.85);
}

[data-tier="3"] {
  --bg: var(--tier-red);
  --fg: #fff8f6;
  --fg-muted: rgba(255, 248, 246, 0.75);
  --grid-line: rgba(255, 255, 255, 0.12);
  --border: rgba(255, 255, 255, 0.26);
  --accent: #ffffff;
  --block-fill: rgba(0, 0, 0, 0.22);
  --block-stroke: rgba(255, 255, 255, 0.7);
}

[data-tier="4"] {
  --bg: var(--tier-amber);
  --fg: #141008;
  --fg-muted: rgba(20, 16, 8, 0.68);
  --grid-line: rgba(0, 0, 0, 0.1);
  --border: rgba(0, 0, 0, 0.22);
  --accent: #141008;
  --block-fill: rgba(0, 0, 0, 0.18);
  --block-stroke: rgba(20, 16, 8, 0.75);
}

[data-tier="5"] {
  --bg: var(--tier-purple);
  --fg: #f6f0fa;
  --fg-muted: rgba(246, 240, 250, 0.72);
  --grid-line: rgba(255, 255, 255, 0.11);
  --border: rgba(255, 255, 255, 0.24);
  --accent: #ffffff;
  --block-fill: rgba(255, 255, 255, 0.22);
  --block-stroke: rgba(255, 255, 255, 0.65);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.45;
  overflow-x: hidden;
  transition: background 0.55s ease, color 0.55s ease;
  cursor: crosshair;
}

body.holding {
  user-select: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

/* --- layers --- */

.grid-layer {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  transition: background-image 0.55s ease;
  pointer-events: none;
}

.build-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}

.content-shade {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(var(--max-width), calc(100% - 2rem));
  z-index: -1;
  background: color-mix(in srgb, var(--bg) 88%, #ffffff);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  pointer-events: none;
  transition: background 0.55s ease, border-color 0.55s ease;
}

.build-block {
  position: absolute;
  width: 32px;
  height: 32px;
  background: var(--block-fill);
  border: 1px solid var(--block-stroke);
  transform: scale(0);
  animation: block-in 0.35s cubic-bezier(0.2, 1.1, 0.3, 1) forwards;
}

@keyframes block-in {
  to { transform: scale(1); }
}

.hold-ui {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(4px);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  pointer-events: none;
  transition: border-color 0.55s ease, background 0.55s ease;
}

.hold-ui.active {
  animation: hold-pulse 0.8s ease-in-out infinite;
}

@keyframes hold-pulse {
  50% { opacity: 0.55; }
}

.tier-dots {
  display: flex;
  gap: 0.35rem;
}

.tier-dot {
  width: 8px;
  height: 8px;
  border: 1px solid var(--border);
  background: transparent;
  transition: background 0.3s ease, transform 0.3s ease;
}

.tier-dot.on {
  transform: scale(1.15);
}

.tier-dot[data-i="1"].on { background: var(--tier-paper); }
.tier-dot[data-i="2"].on { background: var(--tier-blueprint); }
.tier-dot[data-i="3"].on { background: var(--tier-red); }
.tier-dot[data-i="4"].on { background: var(--tier-amber); }
.tier-dot[data-i="5"].on { background: var(--tier-purple); }

/* --- layout --- */

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
  transition: background 0.55s ease, border-color 0.55s ease;
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
}

.nav-links a {
  opacity: 0.65;
  transition: opacity 0.15s ease;
}

.nav-links a:hover {
  opacity: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background 0.15s ease, color 0.55s ease, border-color 0.55s ease;
}

.btn:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.btn-ghost {
  opacity: 0.7;
}

.btn-ghost:hover {
  opacity: 1;
}

/* --- hero --- */

.hero {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-stack {
  display: grid;
  gap: 2rem;
}

.hero-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: end;
}

.hero-top h1 {
  font-family: var(--mono);
  font-size: clamp(2rem, 7vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-transform: uppercase;
}

.hero-code {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-align: right;
  line-height: 1.8;
}

.feature-graphic {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  filter: grayscale(0.05) contrast(1.04);
  transition: border-color 0.55s ease;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* --- sections --- */

section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 1.25rem;
}

/* --- project rows --- */

.project-list {
  display: grid;
  gap: 0;
  border: 1px solid var(--border);
}

.project-row {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.5fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s ease;
}

.project-row:last-child {
  border-bottom: none;
}

.project-row:hover {
  background: color-mix(in srgb, var(--fg) 6%, transparent);
}

.project-row.is-live {
  border-left: 4px solid var(--tier-blueprint);
}

.project-row.is-wip {
  border-left: 4px solid var(--tier-amber);
}

.project-row.is-idea {
  border-left: 4px solid var(--tier-purple);
  opacity: 0.82;
}

.project-name {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project-type {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.project-status {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.project-link {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  opacity: 0.55;
  transition: opacity 0.15s ease;
}

.project-row:hover .project-link {
  opacity: 1;
}

.project-detail {
  padding: 1.25rem 1.1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: grid;
  gap: 1.25rem;
}

.project-detail:last-child {
  border-bottom: none;
}

.project-detail-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.project-detail-head h3 {
  font-family: var(--mono);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.45rem;
  border: 1px solid var(--border);
  color: var(--fg-muted);
}

.project-blurb {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--fg-muted);
  max-width: 38rem;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* --- about glyphs --- */

.glyph-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.glyph {
  aspect-ratio: 1;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  transition: background 0.15s ease, transform 0.15s ease;
}

.glyph:hover {
  background: color-mix(in srgb, var(--fg) 8%, transparent);
  transform: translateY(-2px);
}

.glyph-label {
  display: block;
  margin-top: 0.55rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-align: center;
}

.glyph-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-note {
  margin-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-transform: uppercase;
}

/* --- contact --- */

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  transition: background 0.15s ease, color 0.15s ease;
}

.contact-chip:hover {
  background: var(--fg);
  color: var(--bg);
}

/* --- footer --- */

.site-footer {
  padding: 1.25rem 0 5rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a:hover {
  color: var(--fg);
}

.trash-easter {
  opacity: 0.35;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.trash-easter:hover {
  opacity: 1;
  transform: rotate(-8deg);
}

/* --- responsive --- */

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

  .hero-code {
    text-align: left;
  }

  .project-row {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "name status"
      "type link";
  }

  .project-name { grid-area: name; }
  .project-type { grid-area: type; }
  .project-status { grid-area: status; justify-self: end; }
  .project-link { grid-area: link; justify-self: end; }

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

  .nav-links {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .project-actions,
  .contact-row {
    flex-direction: column;
  }

  .btn,
  .contact-chip {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}