/* ==========================================================================
   Hash Protocol: site.css (page layer on top of HASH/DS)
   ========================================================================== */

/* ---- Brand ---- */
.brand-logo { height: 18px; width: auto; filter: invert(1); opacity: 0.95; }
.footer-logo { height: 22px; width: auto; filter: invert(1); opacity: 0.9; }

/* ---- Hero ---- */
.hero-band { padding-block: 7.5rem 5rem; }
.hero-actions { display: flex; align-items: center; gap: 1.5rem; margin-top: 2.5rem; flex-wrap: wrap; }

/* ---- Section grids ---- */
.about-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; align-items: start; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }

/* ---- Team ---- */
.team-list { border-top: 1px solid var(--hds-line); }
.team-row { display: flex; align-items: center; gap: 1rem; padding: 1.125rem 0; border-bottom: 1px solid var(--hds-line); }
.team-av { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; filter: grayscale(1); transition: filter 300ms var(--hds-ease); flex: none; }
.team-row:hover .team-av { filter: grayscale(0); }
.team-tile { width: 44px; height: 44px; border-radius: 50%; background: var(--hds-bg-3); border: 1px solid var(--hds-line-2); display: flex; align-items: center; justify-content: center; font-family: var(--hds-font-mono); font-size: 0.75rem; color: var(--hds-ink-2); flex: none; }
.team-link { margin-left: auto; color: var(--hds-ink-3); transition: color var(--hds-fast) var(--hds-ease); }
.team-link:hover { color: var(--hds-accent); }

/* ---- Language switcher ---- */
.lang { position: relative; margin-left: 1rem; }
.lang-btn {
  display: flex; align-items: center; gap: 0.4rem;
  font-family: var(--hds-font-mono); font-size: 0.6875rem; letter-spacing: 0.1em;
  color: var(--hds-ink-2); border: 1px solid var(--hds-line-2);
  border-radius: var(--hds-r-1); padding: 0.5rem 0.75rem;
  transition: color var(--hds-fast) var(--hds-ease), border-color var(--hds-fast) var(--hds-ease);
}
.lang-btn:hover { color: var(--hds-ink); border-color: var(--hds-ink-3); }
.lang-btn svg { transition: transform var(--hds-fast) var(--hds-ease); }
.lang-btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.lang-menu {
  position: absolute; top: calc(100% + 0.5rem); right: 0; z-index: 120;
  min-width: 11rem;
  background: var(--hds-bg-2); border: 1px solid var(--hds-line-2);
  border-radius: var(--hds-r-2); padding: 0.5rem;
}
.lang-menu[hidden] { display: none; }
.lang-item {
  display: flex; justify-content: space-between; align-items: center; gap: 1.5rem;
  padding: 0.5rem 0.625rem; font-size: 0.8125rem; border-radius: var(--hds-r-1);
}
.lang-item.active { color: var(--hds-ink); font-weight: 500; }
.lang-item.disabled { color: var(--hds-ink-3); }
.lang-item .soon { font-family: var(--hds-font-mono); font-size: 0.625rem; color: var(--hds-ink-4); letter-spacing: 0.08em; }

/* ---- Mobile menu ---- */
.menu-btn { display: none; position: relative; width: 40px; height: 40px; }
.menu-btn span {
  position: absolute; left: 12px; width: 16px; height: 1.5px; background: var(--hds-ink);
  transition: transform 200ms var(--hds-ease), top 200ms var(--hds-ease);
}
.menu-btn span:nth-child(1) { top: 17px; }
.menu-btn span:nth-child(2) { top: 23px; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { top: 20px; transform: rotate(-45deg); }
.mobile-menu { display: none; border-top: 1px solid var(--hds-line); padding: 1rem var(--hds-gutter) 1.5rem; background: var(--hds-bg); }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 0.75rem 0; font-size: 1rem; color: var(--hds-ink-2); }
.mobile-menu a:hover { color: var(--hds-ink); }

/* ---- Execution log animation ---- */
.log-line { opacity: 0; animation: log-in 400ms var(--hds-ease) forwards; }
@keyframes log-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.log-cursor {
  display: inline-block; width: 7px; height: 13px;
  background: var(--hds-accent); vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---- Sparklines in strategy table ---- */
.spark-svg { width: 72px; height: 20px; overflow: visible; }
.spark-svg polyline {
  fill: none; stroke: var(--hds-accent); stroke-width: 1;
  stroke-dasharray: 200; stroke-dashoffset: 200; opacity: 0.85;
}
.in .spark-svg polyline { animation: spark-draw 1.2s var(--hds-ease) forwards; }
@keyframes spark-draw { to { stroke-dashoffset: 0; } }

/* ---- Staggered reveals ---- */
html.hds-js [data-hds-reveal].in { transition-delay: var(--d, 0ms); }
.hds-table.reveal-rows tbody tr { opacity: 0; }
.hds-table.reveal-rows.in tbody tr { animation: row-in 500ms var(--hds-ease) forwards; animation-delay: calc(var(--i) * 70ms); }
@keyframes row-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .hds-table.reveal-rows tbody tr { opacity: 1; animation: none; }
  .log-line { opacity: 1; animation: none; }
  .spark-svg polyline { stroke-dashoffset: 0; animation: none; }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .menu-btn { display: block; }
  .hero-band { padding-block: 5rem 3.5rem; }
}

/* Execution log sizing (avoid layout jump while lines print) */
#exec-log { min-height: 7.5rem; }

/* ==========================================================================
   Strategy slider (fullscreen cards with scanline art)
   ========================================================================== */
.slider-wrap { position: relative; }
.slider {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  gap: 1.5rem;
  outline: none;
}
.slider::-webkit-scrollbar { display: none; }
.slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
  min-height: min(62vh, 34rem);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
  border: 1px solid var(--hds-line);
  border-radius: var(--hds-r-2);
  background: var(--hds-bg-2);
  padding: 3rem 3.5rem;
}
.slide-idx {
  display: block;
  font-family: var(--hds-font-serif); font-style: italic;
  font-size: 2rem; color: var(--hds-ink-3);
}
.slide-title {
  margin-top: 0.75rem;
  font-family: var(--hds-font-serif); font-weight: 400;
  font-variation-settings: 'SOFT' 60;
  font-size: clamp(1.75rem, 1.4rem + 1.4vw, 2.75rem);
  letter-spacing: -0.025em; line-height: 1.05;
}
.slide-copy p { margin-top: 1.25rem; color: var(--hds-ink-2); max-width: 44ch; }
.slide-meta { font-size: 0.6875rem; color: var(--hds-ink-3); letter-spacing: 0.08em; display: flex; align-items: center; flex-wrap: wrap; gap: 0.375rem; }
.slide-art {
  align-self: stretch;
  display: flex; align-items: center; justify-content: center;
  border-left: 1px solid var(--hds-line);
  padding-left: 3rem;
}
.scan-art { width: min(100%, 340px); height: auto; color: var(--hds-accent); }
.scan-art line { stroke: currentColor; stroke-width: 2; opacity: 0; }
.slide.active .scan-art line { opacity: 0.9; transition: opacity 350ms var(--hds-ease); transition-delay: calc(var(--l) * 14ms); }

.slider-nav {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 1.25rem;
}
.slider-count { font-size: 0.75rem; color: var(--hds-ink-3); letter-spacing: 0.1em; }
.slider-count #slide-cur { color: var(--hds-accent); }
.slider-btns { display: flex; gap: 0.5rem; }

@media (max-width: 900px) {
  .slide { grid-template-columns: 1fr; min-height: 0; padding: 1.75rem; gap: 1.75rem; }
  .slide-art { border-left: none; border-top: 1px solid var(--hds-line); padding: 1.75rem 0 0; }
  .scan-art { width: min(100%, 220px); }
}

/* ---- Chain cells with logos ---- */
.chain-cell { display: flex; align-items: center; gap: 1rem; }
.chain-cell .chain-logo { width: 1.75rem; height: 1.75rem; color: var(--hds-ink); flex: none; }
.chain-cell h3 { font-size: 1rem; }

/* ---- Walking bot on the footer hairline ---- */
footer.hds-footer { position: relative; overflow: clip; }
.bot {
  position: absolute; top: -13px; left: 0;
  animation: bot-walk 55s linear infinite;
  pointer-events: none;
}
.bot .leg-a { animation: bot-step 0.5s steps(2) infinite; }
.bot .leg-b { animation: bot-step 0.5s steps(2) infinite reverse; }
@keyframes bot-walk { from { transform: translateX(-24px); } to { transform: translateX(100vw); } }
@keyframes bot-step { 50% { transform: translateY(-2px); } }

@media (max-width: 900px), (prefers-reduced-motion: reduce) { .bot { display: none; } }