:root {
  --bg: #05070a;
  --panel: #0b1118;
  --ink: #d7e4ea;
  --muted: #7f96a0;
  --cyan: #4fd2ff;
  --cyan-dim: rgba(79, 210, 255, 0.18);
  --line: rgba(79, 210, 255, 0.22);
  --danger: #ff6b6b;
  --ok: #7dffb3;
}

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

html, body {
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", "Source Sans 3", sans-serif;
}

body { overflow-x: hidden; }

.brand-bar {
  position: relative;
  z-index: 21;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 8vw;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 7, 10, 0.86);
  backdrop-filter: blur(8px);
}

.brand-bar img {
  width: 52px;
  height: 52px;
  display: block;
  border-radius: 10px;
  box-shadow: 0 0 18px rgba(79, 210, 255, 0.22);
}

.hub-mark {
  width: 96px;
  height: 96px;
  display: block;
  border-radius: 18px;
  margin-bottom: 1.1rem;
  box-shadow: 0 0 36px rgba(79, 210, 255, 0.28);
}

.room-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: var(--panel);
  color: inherit;
  text-decoration: none;
  min-height: 22rem;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.room-card:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.room-card.soon { opacity: 0.62; cursor: default; }
.room-card.soon:hover { transform: none; box-shadow: none; border-color: var(--line); }

.protocol {
  padding: 0 8vw 3rem;
  max-width: 1100px;
}

.protocol h2 {
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: "IBM Plex Mono", monospace;
  color: var(--cyan);
  margin-bottom: 1.2rem;
}

.proto-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.proto-steps li {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 1.1rem 1.15rem 1.2rem;
  min-height: 8.5rem;
}

.proto-steps span {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  color: var(--cyan);
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  margin-bottom: 0.55rem;
}

.proto-steps p {
  color: var(--muted);
  line-height: 1.45;
  font-size: 0.95rem;
}

.brand-name {
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--cyan);
}

.brand-class {
  margin-left: auto;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--danger);
  border: 1px solid rgba(255, 107, 107, 0.4);
  padding: 0.25rem 0.5rem;
}

.lang-switch {
  display: flex;
  gap: 0.25rem;
}

.lang-btn {
  font-family: "IBM Plex Mono", monospace;
  cursor: pointer;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 0.35rem 0.65rem;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 600;
}

.lang-btn.on {
  background: var(--cyan);
  color: #05070a;
  border-color: var(--cyan);
}

.hub-hero {
  position: relative;
  min-height: 78vh;
  display: grid;
  place-items: end start;
  overflow: hidden;
}

.hub-bg {
  position: absolute;
  inset: 0;
  background: #05070a url("../assets/hub-bg.png") center/cover no-repeat;
  filter: saturate(1.05) contrast(1.08);
}

.brand-home {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}

.brand-bar .lang-switch {
  position: static;
}

.hub-veil {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,210,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5,7,10,0.92) 0%, rgba(5,7,10,0.55) 48%, rgba(5,7,10,0.28) 100%),
    linear-gradient(180deg, rgba(5,7,10,0.15) 20%, rgba(5,7,10,0.92) 100%);
  background-size: 100% 4px, auto, auto;
}

.hub-copy {
  position: relative;
  z-index: 2;
  padding: 7vh 8vw 4rem;
  max-width: 44rem;
}

.kicker {
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--cyan);
  margin-bottom: 1rem;
}

h1 {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
}

.tagline {
  margin: 1.3rem 0 1.8rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 34rem;
  line-height: 1.55;
}

.btn-gold, .btn-ghost, .tab {
  font-family: "IBM Plex Mono", monospace;
  cursor: pointer;
  border: 1px solid var(--cyan);
  background: var(--cyan);
  color: #05070a;
  padding: 0.75rem 1.3rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.74rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
}

.btn-ghost, .tab {
  background: transparent;
  color: var(--ink);
}

.auth-tabs { display: flex; gap: 0.4rem; margin-bottom: 1rem; }
.tab { padding: 0.45rem 0.8rem; }
.tab.on { background: var(--cyan); color: #05070a; }

#form-auth {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  max-width: 22rem;
}

#form-auth label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

#form-auth input {
  font-family: "IBM Plex Sans", sans-serif;
  padding: 0.6rem 0.7rem;
  background: rgba(11, 17, 24, 0.8);
  border: 1px solid var(--line);
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}

.auth-error { color: var(--danger); font-size: 0.9rem; }
.guest-line { margin: 0 0 1rem; color: var(--muted); }
.how { margin-top: 1.6rem; color: var(--muted); font-size: 0.88rem; max-width: 32rem; line-height: 1.5; }
#house-note { color: var(--cyan); }

.title-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.catalog, .board {
  padding: 1rem 8vw 4rem;
  max-width: 1100px;
}

.catalog h2, .board h2 {
  font-weight: 600;
  font-size: 1.7rem;
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

.catalog .lead, .board .lead { color: var(--muted); margin-bottom: 1.4rem; }

.room-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
}

.room-cover {
  height: 10.5rem;
  background: #0a1016 center/cover no-repeat;
}

.room-stamp {
  position: absolute;
  top: 0.7rem;
  left: 0.7rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid var(--line);
  background: rgba(5,7,10,0.72);
  padding: 0.2rem 0.4rem;
}

.room-card.theme-noir .room-stamp { color: #d4a574; border-color: rgba(212,165,116,0.45); }
.room-card.theme-cipher .room-stamp { color: #7dffb3; }
.room-card.theme-ghost .room-stamp { color: #c9b6ff; }
.room-card.theme-space .room-stamp { color: #4fd2ff; border-color: rgba(79,210,255,0.45); }

.board-split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.6rem;
}
.board-split h3 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.7rem;
}

.room-body { padding: 1.1rem 1.15rem 1.3rem; flex: 1; display: flex; flex-direction: column; }
.room-body h3 {
  font-weight: 600;
  font-size: 1.35rem;
  margin-bottom: 0.45rem;
}
.room-body p { color: var(--muted); line-height: 1.45; flex: 1; }
.room-meta {
  margin-top: 1rem;
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.68rem;
  color: var(--cyan);
}

.board-me { color: var(--cyan); margin-bottom: 0.8rem; font-size: 0.95rem; }
.board-table {
  width: 100%;
  max-width: 36rem;
  border-collapse: collapse;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
}
.board-table th, .board-table td {
  text-align: left;
  padding: 0.5rem 0.4rem;
  border-bottom: 1px solid var(--line);
}
.board-table th {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.board-table tr.me td { color: var(--cyan); font-weight: 600; }

.site-foot {
  padding: 1.2rem 8vw 2.2rem;
  border-top: 1px solid var(--line);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.achieves {
  padding: 0 8vw 3.2rem;
  max-width: 1100px;
}

.achieves h2 {
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: "IBM Plex Mono", monospace;
  color: var(--cyan);
  margin-bottom: 0.6rem;
}

.achieves .lead {
  color: var(--muted);
  margin-bottom: 1.2rem;
  max-width: 40rem;
}

.achieve-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
}

.achieve-card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 1rem 1.05rem 1.15rem;
  min-height: 8.5rem;
  opacity: 0.48;
}

.achieve-card.on {
  opacity: 1;
  border-color: rgba(79, 210, 255, 0.55);
}

.achieve-card .meta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.achieve-card.on .meta { color: var(--cyan); }

.achieve-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.achieve-card p { color: var(--muted); line-height: 1.4; font-size: 0.92rem; }

[hidden] { display: none !important; }