/* ── Base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body {
  background: #0d0d0d;
  color: #e0e0e0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  margin: 0;
  overscroll-behavior: none;
}

/* ── Matrix page ─────────────────────────────────────────── */
.matrix-page {
  height: calc(100vh - var(--navh, 48px));
  overflow: hidden;
}
.matrix-scroll {
  width: 100%;
  height: 100%;
  overflow: hidden; /* no scroll — matrix fits exactly */
}
.matrix-tbl {
  border-collapse: collapse;
  table-layout: fixed;
}

/* Corner */
.mx-corner {
  background: #0d0d0d;
  width: var(--hdr-w, 130px);
  min-width: var(--hdr-w, 130px);
  position: sticky;
  top: 0;
  left: 0;
  z-index: 4;
}

/* Column headers */
.mx-col-hdr {
  background: #111;
  position: sticky;
  top: 0;
  z-index: 2;
  width: var(--cw, 26px);
  min-width: var(--cw, 26px);
  max-width: var(--cw, 26px);
  height: var(--hdr-h, 115px);
  vertical-align: bottom;
  padding: .2rem .05rem;
  border-bottom: 1px solid #2a2a2a;
  border-right: 1px solid #181818;
  transition: background .08s;
}
.mx-col-hdr.hl-col { background: #1c2a1c; }

.mx-col-title {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  display: inline-block;
  font-size: .62rem;
  font-weight: 600;
  white-space: nowrap;
  max-height: 110px;
  overflow: hidden;
  line-height: 1.2;
}

/* Row headers */
.mx-row-hdr {
  background: #111;
  position: sticky;
  left: 0;
  z-index: 1;
  width: var(--hdr-w, 130px);
  min-width: var(--hdr-w, 130px);
  max-width: var(--hdr-w, 130px);
  height: var(--ch, 26px);
  padding: 0 .5rem;
  font-size: .66rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-right: 1px solid #2a2a2a;
  transition: background .08s;
  vertical-align: middle;
}
.mx-row-hdr.hl-row { background: #1c2a1c; }

/* Data cells */
.mx-cell {
  width: var(--cw, 26px);
  min-width: var(--cw, 26px);
  max-width: var(--cw, 26px);
  height: var(--ch, 26px);
  text-align: center;
  vertical-align: middle;
  border: 1px solid #161616;
  padding: 0;
  transition: background .08s;
}
.mx-self  { background: #1a1a1a; }
.mx-empty { background: #0e0e0e; }
.mx-conn  { background: #111; cursor: pointer; }

/* Highlight */
.mx-cell.hl-row,
.mx-cell.hl-col             { background: #1a261a; }
.mx-cell.mx-self.hl-row,
.mx-cell.mx-self.hl-col     { background: #222e22; }
.mx-conn.hl-row,
.mx-conn.hl-col             { background: #1e301e; }

/* Dot */
.mx-dot {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin: auto;
  transition: filter .08s, transform .08s;
}
.mx-conn:hover .mx-dot,
.mx-conn.hl-row .mx-dot,
.mx-conn.hl-col .mx-dot { filter: brightness(1.7); transform: scale(1.3); }

/* ── Popup — desktop (centered) ──────────────────────────── */
.mx-popup {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(3px);
}
.mx-popup-box {
  background: #181818;
  border: 1px solid #333;
  border-radius: 12px;
  padding: 1.6rem 1.8rem;
  max-width: 480px;
  width: 90%;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,.8);
}
.mx-popup-drag { display: none; }
.mx-popup-close {
  position: absolute;
  top: .75rem;
  right: 1rem;
  background: none;
  border: none;
  color: #777;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
.mx-popup-close:hover { color: #fff; }
.mx-popup-works {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  margin-bottom: .9rem;
  flex-wrap: wrap;
}
.mx-popup-work  { font-size: .9rem; font-weight: 700; line-height: 1.3; }
.mx-popup-arrow { color: #555; font-size: .85rem; }
.mx-popup-title {
  font-size: .75rem;
  font-weight: 600;
  color: #d4a84b;
  margin-bottom: .6rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.mx-popup-desc {
  font-size: .875rem;
  color: #ccc;
  line-height: 1.65;
}

/* ── Mobile overrides ────────────────────────────────────── */
@media (max-width: 767px) {
  /* Compact text in headers */
  .mx-col-title {
    font-size: 8px;
    max-height: calc(var(--hdr-h, 130px) - 4px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0, black 18px);
    mask-image: linear-gradient(to bottom, transparent 0, black 18px);
  }
  .mx-row-title {
    font-size: 8px;
  }
  .mx-row-hdr {
    padding: 0 4px;
    font-size: 8px;
  }

  /* Smaller dot */
  .mx-dot {
    width: 5px;
    height: 5px;
  }
  .mx-conn:hover .mx-dot,
  .mx-conn.hl-row .mx-dot,
  .mx-conn.hl-col .mx-dot { transform: none; }

  /* Popup becomes bottom sheet */
  .mx-popup {
    align-items: flex-end;
    backdrop-filter: blur(2px);
  }
  .mx-popup-box {
    max-width: 100%;
    width: 100%;
    border-radius: 18px 18px 0 0;
    padding: 1.2rem 1.4rem 2rem;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }
  .mx-popup-drag {
    display: block;
    width: 40px;
    height: 4px;
    background: #444;
    border-radius: 2px;
    margin: 0 auto 1.2rem;
  }
}