/* Scoped to the post-login screens; the homepage and workspace keep their styles. */
#interaction-modes[hidden], #interaction-modes [hidden] { display: none !important; }
body.show-interaction-modes > .app-container { display: none !important; }
#interaction-modes {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  color-scheme: dark;
  color: #f5f7fa;
  background: radial-gradient(ellipse at 50% 8%, #17212d 0, transparent 48%), #080a0d;
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  line-height: 1.5;
  z-index: 2100;
}
#interaction-modes .mode-page { max-width: 1240px; padding: 12px 32px 24px; margin: 0 auto; }
#interaction-modes .mode-utility { display: flex; align-items: center; justify-content: flex-end; gap: 16px; }
#interaction-modes .mode-utility button, #interaction-modes .mode-back { background: transparent; border: 1px solid #485463; color: #d5dee8; padding: 9px 16px; border-radius: 8px; }
#interaction-modes button { cursor: pointer; font: inherit; font-size: 14px; font-weight: 500; }
#interaction-modes button:focus-visible, #interaction-modes .mode-card:focus-visible, #interaction-mode-switch:focus-visible { outline: 2px solid #b3d7ff; outline-offset: 5px; }
#interaction-modes h1:focus { outline: none; }
#interaction-modes h2 { font-size: clamp(24px, 2vw, 28px); font-weight: 600; letter-spacing: -0.025em; margin: 0 0 8px; line-height: 1.25; }
#interaction-modes ul { list-style: none; margin: 14px 0 18px; padding: 0; display: grid; gap: 6px; }
#interaction-modes li { color: #d7dee7; font-size: 15px; padding-left: 20px; position: relative; }
#interaction-modes li::before { content: '✓'; position: absolute; left: 0; color: #91acc9; font-size: 12px; }

/* Selection layout: one height budget, two equal columns. Voice keeps its own CSS. */
#interaction-modes[data-view="select-mode"] {
  --top-space: 13dvh;
  --logo-height: clamp(36px, 5.6dvh, 60px);
  --brand-gap: 3dvh;
  --tagline-size: clamp(16px, min(1.55vw, 2.8dvh), 28px);
  --cards-gap: 6dvh;
  --bottom-space: 5dvh;
  --column-gap: clamp(10px, 0.8vw, 16px);
  /* Two 1.25:1 cards need 2.5 times the available height, plus the gap. */
  --card-height: calc(100dvh - var(--top-space) - var(--logo-height) - var(--brand-gap) - var(--tagline-size) * 1.3 - var(--cards-gap) - var(--bottom-space));
  background: radial-gradient(circle at 50% 16%, #28323e2e, transparent 58%), #070b0f;
}
#interaction-modes[data-view="select-mode"] .mode-page {
  width: 100%;
  max-width: none;
  min-height: 100dvh;
  padding: var(--top-space) 4vw var(--bottom-space);
  box-sizing: border-box;
}
#interaction-modes[data-view="select-mode"] .mode-utility,
#interaction-modes .mode-instruction { display: none; }
#interaction-modes [data-mode-selection] { width: 100%; }
#interaction-modes .mode-brand-header {
  text-align: center;
  margin-bottom: var(--cards-gap);
}
#interaction-modes #mode-brand { margin: 0; line-height: 0; }
#interaction-modes .select-mode-logo-img {
  display: block;
  width: min(260px, 23vw, 34dvh);
  height: var(--logo-height);
  margin-inline: auto;
  object-fit: cover;
  object-position: center;
  filter: invert(1);
  mix-blend-mode: screen;
}
#interaction-modes .mode-tagline {
  margin: var(--brand-gap) 0 0;
  color: #eef0f3;
  /* Enlarge type by 12% while preserving the existing layout height budget. */
  font: 400 calc(var(--tagline-size) * 1.12)/calc(var(--tagline-size) * 1.3) "Segoe UI", "Inter", Arial, sans-serif;
}
#interaction-modes .mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--column-gap);
  width: min(100%, 1450px, calc(var(--card-height) * 2.5 + var(--column-gap)));
  margin-inline: auto;
}
#interaction-modes .mode-card {
  display: block;
  min-width: 0;
  color: inherit;
  text-decoration: none;
  border-radius: clamp(18px, 1.1vw, 20px);
  cursor: pointer;
}
#interaction-modes .mode-card-media {
  position: relative;
  width: 100%;
  aspect-ratio: 1.25 / 1;
  overflow: hidden;
  border-radius: inherit;
  background: #0a0d11;
  isolation: isolate;
  container-type: inline-size;
}
#interaction-modes .mode-card-media > img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}
#interaction-modes .mode-card:first-child .mode-card-media > img { object-position: 44% center; }
#interaction-modes .final-mode-gradient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to bottom, #05080c00 34%, #05080c1f 49%, #05080c7a 66%, #05080ce0 83%, #05080cf7 100%);
}
#interaction-modes .final-mode-copy {
  position: absolute;
  inset-inline: 5%;
  bottom: 10%;
  text-align: left;
  pointer-events: none;
}
#interaction-modes .final-mode-title {
  margin-bottom: 0.22em;
  color: #fff;
  font-family: "Bodoni MT", Didot, Georgia, "Times New Roman", serif;
  font-size: clamp(20px, 8cqi, 56px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.015em;
  text-shadow: 0 3px 16px #0009;
}
#interaction-modes .final-mode-subtitle {
  color: #f0bd8b;
  font-family: Consolas, "SFMono-Regular", "Courier New", monospace;
  font-size: clamp(12.1px, 2.2385cqi, 15.73px);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.015em;
  overflow-wrap: anywhere;
  text-shadow: 0 2px 8px #0009;
}
#interaction-modes .mode-card:focus-visible { outline: 2px solid #f3a65a; outline-offset: 4px; }
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  #interaction-modes .mode-card {
    transition: transform 220ms ease, filter 220ms ease, box-shadow 220ms ease;
  }
  #interaction-modes .mode-card-media > img,
  #interaction-modes .final-mode-title { transition: transform 220ms ease; }
  #interaction-modes .mode-card:hover {
    transform: translateY(-4px);
    filter: brightness(1.045);
    box-shadow: 0 0 0 1px #f0bd8b30, 0 8px 24px #f0bd8b0a;
  }
  #interaction-modes .mode-card:hover .mode-card-media > img { transform: scale(1.015); }
  #interaction-modes .mode-card:hover .final-mode-title { transform: translateY(-1px); }
}
/* Only narrow phones stack. Natural vertical scrolling preserves readable cards. */
@media (max-width: 540px) {
  #interaction-modes[data-view="select-mode"] {
    --top-space: 7dvh;
    --brand-gap: 2dvh;
    --cards-gap: 4dvh;
  }
  #interaction-modes .select-mode-logo-img { width: min(60vw, 260px); }
  #interaction-modes .mode-grid {
    width: 100%;
    grid-template-columns: minmax(0, 1fr);
  }
}