/* ==========================================================================
   App Layout — Figma-exact: No status bar, no ambient effects
   Grid: header left + contact form right + cards canvas
   ========================================================================== */

/* ── App Viewport Container ── */
.app-container {
  position: relative;
  width: 100%;
  height: 100%;
  height: 100dvh;
  padding: 56px 48px 36px 64px;
  display: grid;
  grid-template-columns: 1fr 340px;
  grid-template-rows: auto 1fr;
  gap: var(--space-7);
  overflow: hidden;
  z-index: var(--z-app);
}

/* ── Header & Branding ── */
.site-header {
  grid-column: 1 / 2;
  grid-row: 1 / 2;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 42px;
  padding-left: 72px;
  z-index: var(--z-header);
  pointer-events: auto;
}

.brand-symbol {
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.brand-title {
  font-size: var(--fs-hero);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.04em;
  line-height: 1.02;
  color: var(--text-primary);
  text-transform: uppercase;
}

.brand-tagline-mobile { display: none; }

/* ── Desktop Nav Controls ── */
.nav-controls-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-top: var(--space-1);
  flex-wrap: wrap;
}

/* ── Social External Links ── */
.social-links-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.94rem;
  font-weight: var(--fw-semibold);
  padding: var(--space-1) var(--space-2);
  transition: transform 0.2s var(--smooth), opacity 0.2s;
}

.social-link:hover { transform: translateY(-2px); opacity: 0.8; }

.link-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  display: inline-block;
  vertical-align: middle;
  pointer-events: none;
  user-select: none;
}

.social-link .arrow {
  font-size: 0.9em;
  transition: transform 0.2s var(--smooth);
}

.social-link:hover .arrow { transform: translate(2px, -2px); }

/* ── Mobile Header Actions (hidden on desktop) ── */
.mobile-header-actions { display: none; }

/* ── Contact Card Wrapper (right sidebar on desktop) ── */
.contact-card-wrapper {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  z-index: var(--z-contact);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  pointer-events: auto;
  padding-top: 8px;
}

/* ── Cards Playground Canvas ── */
.cards-playground {
  position: absolute;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  overflow: hidden;
}

.cards-group {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s;
}

.cards-group.active-group {
  visibility: visible;
  opacity: 1;
}

/* ── Top-Right Sound Toggle Button (Black fill + White icon when ON, White bg + Black icon when OFF) ── */
.sound-toggle-btn {
  position: fixed;
  top: 24px;
  right: 32px;
  z-index: 1000;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #111111;
  border: 2px solid #111111;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 2px 2px 0px #111111;
  transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.15s ease,
              background-color 0.2s ease,
              border-color 0.2s ease,
              color 0.2s ease;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  padding: 0;
}

.sound-toggle-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0px #111111;
  background: #262626;
  border-color: #111111;
  color: #FFFFFF;
}

.sound-toggle-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px #111111;
}

.sound-toggle-btn svg {
  width: 19px;
  height: 19px;
  stroke: currentColor;
  stroke-width: 2;
  display: block;
  pointer-events: none;
  transition: transform 0.2s ease;
}

.sound-toggle-btn:hover svg {
  transform: scale(1.08);
}

.sound-toggle-btn .icon-unmuted {
  display: block;
}

.sound-toggle-btn .icon-muted {
  display: none;
}

/* ── When Sound is OFF (Muted): White background, Black icon ── */
.sound-toggle-btn[data-muted="true"] {
  border-color: #111111;
  color: #111111;
  background: #FFFFFF;
  box-shadow: 2px 2px 0px #111111;
}

.sound-toggle-btn[data-muted="true"]:hover {
  background: #F4F4F0;
  box-shadow: 3px 3px 0px #111111;
  color: #111111;
}

.sound-toggle-btn[data-muted="true"]:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px #111111;
}

.sound-toggle-btn[data-muted="true"] .icon-unmuted {
  display: none;
}

.sound-toggle-btn[data-muted="true"] .icon-muted {
  display: block;
}

@media (max-width: 860px) {
  .sound-toggle-btn {
    top: 14px;
    right: 14px;
    width: 34px;
    height: 34px;
  }
  .sound-toggle-btn svg {
    width: 17px;
    height: 17px;
  }
}