/* TerraTrend - layout.css
   Background, header, app structure and footer */

/* ---------- Space background + animated aurora ---------- */
.space-bg { position: fixed; inset: 0; z-index: -2; pointer-events: none; }

/* Stars: single static layer - moving starfields at 60fps waste compositor budget.
   The globe rotation already gives the feeling of movement. */
.space-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%, #fff 45%, transparent 55%),
    radial-gradient(1.1px 1.1px at 34% 68%, #d5d9ff 45%, transparent 55%),
    radial-gradient(1.6px 1.6px at 55% 14%, #fff 45%, transparent 55%),
    radial-gradient(1px 1px at 71% 82%, #a5b8ff 45%, transparent 55%),
    radial-gradient(1.3px 1.3px at 84% 35%, #fff 45%, transparent 55%),
    radial-gradient(1px 1px at 22% 91%, #d5d9ff 45%, transparent 55%),
    radial-gradient(1.2px 1.2px at 45% 45%, #fff 45%, transparent 55%),
    radial-gradient(1px 1px at 92% 60%, #a5b8ff 45%, transparent 55%),
    radial-gradient(1.4px 1.4px at 63% 71%, #fff 45%, transparent 55%),
    radial-gradient(1px 1px at 8% 55%, #ffd7ec 45%, transparent 55%);
  background-size: 620px 620px;
  opacity: 0.5;
}
.space-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 18% 35%, #d5d9ff 45%, transparent 55%),
    radial-gradient(1.2px 1.2px at 47% 58%, #fff 45%, transparent 55%),
    radial-gradient(1px 1px at 76% 24%, #a5b8ff 45%, transparent 55%),
    radial-gradient(1.1px 1.1px at 90% 70%, #fff 45%, transparent 55%),
    radial-gradient(1px 1px at 5% 80%, #d5d9ff 45%, transparent 55%);
  background-size: 480px 480px;
  opacity: 0.25;
}

/* Aurora blobs: use transform-only animation (no scale change) so the browser
   can cache the blurred raster on the GPU layer and just move it cheaply.
   Changing scale() on a blur() element invalidates the GPU texture each frame. */
.nebula {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  will-change: transform;
  transform: translateZ(0);
}
.nebula-1 {
  width: 70vw; height: 70vw;
  top: -28vw; right: -22vw;
  background: radial-gradient(circle, rgba(109, 75, 255, 0.5) 0%, rgba(34, 224, 238, 0.3) 50%, transparent 72%);
  animation: auroraDrift1 28s ease-in-out infinite alternate;
}
.nebula-2 {
  width: 56vw; height: 56vw;
  bottom: -24vw; left: -16vw;
  background: radial-gradient(circle, rgba(255, 94, 168, 0.45) 0%, rgba(139, 124, 255, 0.3) 50%, transparent 72%);
  animation: auroraDrift2 36s ease-in-out infinite alternate;
}
/* translate-only: no scale → browser reuses the cached blurred GPU texture */
@keyframes auroraDrift1 {
  0%   { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-5vw, 4vw, 0); }
}
@keyframes auroraDrift2 {
  0%   { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(4vw, -5vw, 0); }
}
/* extra slow hue-wash over everything */
.space-bg {
  background:
    radial-gradient(60vw 40vh at 50% 44%, rgba(139, 124, 255, 0.09), transparent 70%),
    var(--bg);
  z-index: -2;
}

/* ---------- App bar ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 40;
  height: var(--appbar-h);
  background: linear-gradient(to bottom, rgba(4, 6, 14, 0.94) 0%, rgba(4, 6, 14, 0.88) 70%, rgba(4, 6, 14, 0));
  box-shadow: inset 0 -1px 0 var(--line);
  /* No backdrop-filter on header - it's full-width and forces GPU framebuffer
     readback every frame, which is the single biggest layout-phase perf killer */
  transition: background 0.3s, box-shadow 0.3s;
}
.site-header.scrolled {
  background: rgba(4, 5, 14, 0.96);
  box-shadow: 0 1px 0 var(--line), 0 4px 24px rgba(0,0,0,0.4);
}
.header-inner {
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 6px 26px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.16em;
  text-decoration: none;
  color: var(--text);
  white-space: nowrap;
}
.logo-mark {
  color: var(--accent-2);
  text-shadow: 0 0 12px rgba(34, 224, 238, 0.8);
}
.logo span {
  background: linear-gradient(92deg, var(--grad-a), var(--grad-b), var(--grad-c));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Fullscreen app view ---------- */
.app-view { height: 100vh; min-height: 620px; position: relative; pointer-events: none; }

.globe-stage {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.globe-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(to bottom, rgba(4, 6, 14, 0.5) 0%, transparent 18%, transparent 72%, rgba(4, 6, 14, 0.45) 100%);
}

/* ---------- Header tool buttons ---------- */
.header-tools {
  display: flex;
  gap: 6px;
  margin-left: auto;
  align-items: center;
}
.header-tool-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(9, 10, 24, 0.6);
  border: 1px solid rgba(140, 150, 255, 0.2);
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
  pointer-events: auto;
}
.header-tool-btn:hover {
  background: rgba(139, 124, 255, 0.15);
  border-color: rgba(139, 124, 255, 0.5);
  color: #fff;
  box-shadow: 0 0 18px -6px rgba(139, 124, 255, 0.6);
}

/* ---------- z-index stack ---------- */
/* z 1 keeps page content stacking above the fixed z-0 globe canvas;
   aurora/starfield stays behind it on .space-bg (z -2) */
.ticker,
.site-footer { position: relative; z-index: 1; }

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 36px;
  background: rgba(4, 5, 14, 0.99);
  border-top: 1px solid rgba(140, 150, 255, 0.1);
}
/* subtle gradient accent along the top edge */
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 12%; right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--grad-a) 28%, var(--grad-b) 55%, var(--grad-c) 82%, transparent);
  opacity: 0.45;
}
/* dissolve the wrapper so children join the footer flex row */
.footer-inner { display: contents; }

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}
.footer-logo-mark {
  color: var(--accent-2);
  text-shadow: 0 0 12px rgba(34, 224, 238, 0.7);
}
.footer-brand-name span {
  background: linear-gradient(92deg, var(--grad-a), var(--grad-b), var(--grad-c));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.footer-desc {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.5;
  opacity: 0.85;
  text-align: center;
}
.footer-note {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  opacity: 0.7;
  text-align: right;
  white-space: nowrap;
  flex-shrink: 0;
}
@media (max-width: 680px) {
  .site-footer { flex-direction: column; align-items: center; padding: 20px 24px; gap: 8px; }
  .footer-desc, .footer-note { text-align: center; }
  .footer-note { font-size: 0.62rem; }
}

/* ---------- Onboarding hint (post-launch) ---------- */
.onboard-hint {
  position: fixed;
  left: 262px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 36;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(34, 224, 238, 0.1);
  border: 1px solid rgba(34, 224, 238, 0.28);
  border-radius: 999px;
  padding: 8px 16px 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: var(--accent-2);
  pointer-events: none;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.5s ease;
  backdrop-filter: blur(6px);
}
.onboard-hint.visible { opacity: 1; }
.onboard-arrow { font-size: 0.9rem; display: inline-block; animation: hintBounce 0.9s ease-in-out infinite; }
@keyframes hintBounce {
  0%, 100% { transform: translateX(0); }
  50%       { transform: translateX(-5px); }
}
@media (max-width: 900px) { .onboard-hint { display: none; } }

/* ---------- Auto-tour toggle ---------- */
.auto-tour-btn {
  position: absolute;
  bottom: 52px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 35;
  pointer-events: auto;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(8, 9, 22, 0.88);
  border: 1px solid rgba(140, 150, 255, 0.28);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, opacity 0.3s, box-shadow 0.2s;
  opacity: 0.75;
  white-space: nowrap;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.4);
}
.auto-tour-btn:hover {
  opacity: 1;
  border-color: rgba(139, 124, 255, 0.55);
  color: #fff;
  box-shadow: 0 4px 24px rgba(139, 124, 255, 0.25);
}
.auto-tour-btn.active {
  background: rgba(139, 124, 255, 0.14);
  border-color: rgba(139, 124, 255, 0.5);
  color: var(--accent);
  opacity: 1;
  box-shadow: 0 0 0 3px rgba(139, 124, 255, 0.1), 0 4px 24px rgba(139, 124, 255, 0.3);
  animation: tourPulse 2s ease-in-out infinite;
}
.auto-tour-btn.pending {
  border-color: rgba(34, 224, 238, 0.45);
  color: var(--accent-2);
  opacity: 1;
  animation: tourPending 0.7s ease-in-out infinite;
}
@keyframes tourPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(139, 124, 255, 0.1), 0 4px 24px rgba(139, 124, 255, 0.3); }
  50%       { box-shadow: 0 0 0 5px rgba(139, 124, 255, 0.18), 0 4px 28px rgba(139, 124, 255, 0.45); }
}
@keyframes tourPending {
  0%, 100% { opacity: 0.75; }
  50%       { opacity: 1; }
}

/* ---------- Completion toast ---------- */
.complete-toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  z-index: 80;
  background: rgba(6, 7, 20, 0.97);
  border: 1px solid rgba(34, 224, 238, 0.35);
  border-radius: 14px;
  padding: 13px 22px;
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 0.82rem;
  color: var(--text);
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(34, 224, 238, 0.07) inset;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
  white-space: nowrap;
}
.complete-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.complete-toast-icon {
  font-size: 1.1rem;
  color: var(--accent-2);
  text-shadow: 0 0 14px rgba(34, 224, 238, 0.8);
}

/* ---------- Scroll hint ---------- */
.scroll-hint {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 34;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  opacity: 0;
  transition: opacity 0.6s ease;
}
.scroll-hint.visible { opacity: 1; }
.scroll-hint-arrow {
  font-size: 1.1rem;
  color: rgba(160, 170, 255, 0.85);
  display: block;
  animation: scrollBounce 1.5s ease-in-out infinite;
  text-shadow: 0 0 10px rgba(139, 124, 255, 0.5);
}
.scroll-hint-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: rgba(160, 170, 255, 0.75);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(5px); }
}

/* ── Landscape lock: phones only ──────────────────────────── */
.rotate-prompt {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 18px;
}
@media (max-width: 900px) and (orientation: landscape) {
  .rotate-prompt { display: flex; }
}
.rotate-icon {
  font-size: 2.8rem;
  animation: rotateTip 2.2s ease-in-out infinite;
  display: block;
}
@keyframes rotateTip {
  0%, 40%, 100% { transform: rotate(0deg); }
  60%, 90%      { transform: rotate(-90deg); }
}
.rotate-text {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--text-secondary);
}

/* ── Mobile layout: single-screen app, no scroll ──────────── */
@media (max-width: 900px) {
  /* Lock to one viewport, hide below-fold content */
  .app-view { height: 100vh; height: 100dvh; overflow: hidden; }
  .ticker, .site-footer { display: none; }
  .scroll-hint { display: none !important; }

  /* Tighter header on narrow screens */
  .header-inner { padding: 6px 16px; gap: 14px; }
  .header-tools { gap: 4px; }
  .header-tool-btn { width: 36px; height: 36px; font-size: 0.82rem; }
  #rail-fullscreen { display: none; }

  /* Reposition auto-tour button above the bottom dock */
  .auto-tour-btn {
    bottom: calc(120px + env(safe-area-inset-bottom, 0px));
    font-size: 0.65rem;
    padding: 7px 16px;
    letter-spacing: 0.14em;
  }
  /* Raise toast above the dock */
  .complete-toast { bottom: calc(120px + env(safe-area-inset-bottom, 0px)); }
}

@media (max-width: 500px) { .complete-toast { white-space: normal; max-width: calc(100vw - 32px); } }