/* Commonwealth Online — main menu concept (1920×1080 baseline) */

@font-face {
  font-family: "Futura PT Demibold";
  src: url("../../fonts/futura-pt-demibold.otf") format("opentype");
  font-weight: 600;
  font-display: swap;
}

:root {
  --co-ui-scale: 1;

  --co-black: #0a0c0a;
  --co-panel-bg: rgba(8, 14, 10, 0.72);
  --co-panel-fade: rgba(8, 14, 10, 0);
  --co-green: #3ecf4a;
  --co-green-dim: rgba(62, 207, 74, 0.35);
  --co-amber: #c9a84a;
  --co-amber-muted: rgba(201, 168, 74, 0.55);
  --co-text-pale: #d8ddd0;
  --co-text-muted: #9aa898;
  --co-select-yellow: #c4a84b;
  --co-select-yellow-bright: #d4bc62;
  --co-select-text: #1a1c18;
  --co-border: rgba(201, 168, 74, 0.45);

  --co-font: "Futura PT Demibold", "Roboto Condensed", "Bahnschrift", "Arial Narrow", Arial, sans-serif;
  --co-transition: 120ms ease-out;

  --co-panel-width: 28%;
  --co-menu-size: calc(26px * var(--co-ui-scale));
  --co-menu-gap: calc(6px * var(--co-ui-scale));
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  font-family: var(--co-font);
  font-weight: 600;
  color: var(--co-text-pale);
  background: var(--co-black);
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

/* ── Root layout ─────────────────────────────────────────────── */

.main-screen {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.main-screen.is-session-loading {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* ── Title-screen scenic background ──────────────────────────── */

.scene-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(
      ellipse 80% 60% at 72% 42%,
      rgba(62, 207, 74, 0.08) 0%,
      transparent 55%
    ),
    radial-gradient(
      ellipse 55% 45% at 35% 70%,
      rgba(201, 168, 74, 0.06) 0%,
      transparent 50%
    ),
    linear-gradient(
      165deg,
      #0b120d 0%,
      #141a12 28%,
      #1a2218 48%,
      #121810 72%,
      #080c08 100%
    );
  filter: brightness(0.82) contrast(1.05) saturate(0.65);
}

.scene-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(
      90deg,
      rgba(6, 10, 8, 0.82) 0%,
      rgba(6, 10, 8, 0.38) 28%,
      rgba(6, 10, 8, 0.12) 58%,
      rgba(6, 10, 8, 0.22) 100%
    ),
    rgba(4, 8, 6, 0.15);
}

/* ── Screen effects: vignette, scanlines, HUD grid ─────────── */

.screen-effects {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.screen-effects::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse at center,
      transparent 40%,
      rgba(0, 0, 0, 0.55) 100%
    );
  opacity: 0.9;
}

.screen-effects::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.12) 2px,
      rgba(0, 0, 0, 0.12) 3px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 79px,
      rgba(62, 207, 74, 0.03) 79px,
      rgba(62, 207, 74, 0.03) 80px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 79px,
      rgba(62, 207, 74, 0.03) 79px,
      rgba(62, 207, 74, 0.03) 80px
    );
  opacity: 0.65;
  mix-blend-mode: overlay;
}

.main-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  background:
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.35;
}

/* ── Left panel ──────────────────────────────────────────────── */

.left-panel {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 10;
  width: var(--co-panel-width);
  min-width: calc(280px * var(--co-ui-scale));
  max-width: 36%;
  display: flex;
  flex-direction: column;
  padding:
    calc(28px * var(--co-ui-scale))
    calc(32px * var(--co-ui-scale))
    calc(72px * var(--co-ui-scale))
    calc(28px * var(--co-ui-scale));
  background:
    linear-gradient(
      90deg,
      var(--co-panel-bg) 0%,
      rgba(8, 14, 10, 0.55) 70%,
      var(--co-panel-fade) 100%
    );
}

.brand-logo {
  width: calc(200px * var(--co-ui-scale));
  height: auto;
  margin-bottom: calc(36px * var(--co-ui-scale));
  opacity: 0.88;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
}

/* ── Menu list ───────────────────────────────────────────────── */

.menu {
  display: flex;
  flex-direction: column;
  gap: var(--co-menu-gap);
  flex: 1;
}

.menu-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: calc(14px * var(--co-ui-scale));
  width: 100%;
  padding:
    calc(10px * var(--co-ui-scale))
    calc(12px * var(--co-ui-scale));
  border: none;
  background: transparent;
  color: var(--co-text-muted);
  font-family: inherit;
  font-size: var(--co-menu-size);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-align: left;
  cursor: pointer;
  transition:
    color var(--co-transition),
    transform var(--co-transition);
  outline: none;
}

.menu-item__label {
  position: relative;
  z-index: 2;
}

.menu-item__bar {
  position: absolute;
  left: calc(-28px * var(--co-ui-scale));
  top: 50%;
  transform: translateY(-50%) scaleX(0);
  transform-origin: left center;
  width: calc(100% + 80px * var(--co-ui-scale));
  height: calc(100% + 4px);
  background: linear-gradient(
    90deg,
    var(--co-select-yellow) 0%,
    var(--co-select-yellow-bright) 85%,
    #e0cc6e 100%
  );
  clip-path: polygon(
    0 0,
    calc(100% - 18px) 0,
    100% 50%,
    calc(100% - 18px) 100%,
    0 100%
  );
  opacity: 0;
  transition:
    opacity var(--co-transition),
    transform var(--co-transition);
  z-index: 1;
  box-shadow: 0 0 12px rgba(196, 168, 75, 0.25);
}

.menu-item:hover {
  color: var(--co-text-pale);
}

.menu-item:hover .menu-item__bar {
  opacity: 1;
  transform: translateY(-50%) scaleX(1);
}

.menu-item:focus-visible {
  color: var(--co-text-pale);
  outline: 1px solid var(--co-green-dim);
  outline-offset: 2px;
}

.menu-item.is-selected {
  color: var(--co-select-text);
}

.menu-item.is-selected .menu-item__bar {
  opacity: 1;
  transform: translateY(-50%) scaleX(1);
}

.menu-item.is-disabled {
  opacity: 0.38;
  cursor: default;
  pointer-events: none;
}

/* ── Bottom prompt bar ───────────────────────────────────────── */

.prompt-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(40px * var(--co-ui-scale));
  padding:
    calc(10px * var(--co-ui-scale))
    calc(24px * var(--co-ui-scale));
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(6, 10, 8, 0.75) 30%,
    rgba(6, 10, 8, 0.88) 100%
  );
  border-top: 1px solid rgba(201, 168, 74, 0.15);
  transition: opacity 200ms ease-out, visibility 200ms ease-out;
}

.prompt-bar[hidden] {
  opacity: 0;
  visibility: hidden;
}

.prompt {
  display: flex;
  align-items: center;
  gap: calc(8px * var(--co-ui-scale));
}

.prompt__glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: calc(22px * var(--co-ui-scale));
  height: calc(22px * var(--co-ui-scale));
  font-size: calc(11px * var(--co-ui-scale));
  font-weight: 700;
  color: var(--co-amber);
  border: 1px solid var(--co-amber-muted);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.35);
  line-height: 1;
}

.prompt__glyph--icon {
  border: none;
  border-radius: 0;
  background: transparent;
  min-width: calc(28px * var(--co-ui-scale));
  width: calc(28px * var(--co-ui-scale));
  height: calc(28px * var(--co-ui-scale));
  padding: 0;
}

.prompt__glyph-img {
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  user-select: none;
}

.prompt__label {
  font-size: calc(11px * var(--co-ui-scale));
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--co-text-pale);
  opacity: 0.85;
}

/* Settings mode: keep main nav, dim background more */

.main-screen.is-settings-mode .left-panel {
  overflow: hidden;
  background:
    linear-gradient(
      90deg,
      rgba(8, 14, 10, 0.9) 0%,
      rgba(8, 14, 10, 0.78) 65%,
      rgba(8, 14, 10, 0.15) 100%
    );
}

.main-screen.is-settings-mode .menu-item__bar {
  width: calc(100% + 28px * var(--co-ui-scale));
}

.main-screen.is-settings-mode .scene-overlay {
  background:
    linear-gradient(
      90deg,
      rgba(6, 10, 8, 0.88) 0%,
      rgba(6, 10, 8, 0.55) 24%,
      rgba(6, 10, 8, 0.4) 55%,
      rgba(6, 10, 8, 0.48) 100%
    ),
    rgba(4, 8, 6, 0.32);
}

/* Browser mode: keep main nav, dim background more */

.main-screen.is-browser-mode .left-panel {
  overflow: hidden;
  background:
    linear-gradient(
      90deg,
      rgba(8, 14, 10, 0.9) 0%,
      rgba(8, 14, 10, 0.78) 65%,
      rgba(8, 14, 10, 0.15) 100%
    );
}

.main-screen.is-browser-mode .menu-item__bar {
  width: calc(100% + 28px * var(--co-ui-scale));
}

.main-screen.is-browser-mode .scene-overlay {
  background:
    linear-gradient(
      90deg,
      rgba(6, 10, 8, 0.88) 0%,
      rgba(6, 10, 8, 0.55) 24%,
      rgba(6, 10, 8, 0.4) 55%,
      rgba(6, 10, 8, 0.48) 100%
    ),
    rgba(4, 8, 6, 0.32);
}

/* Quit confirmation modal */

.quit-confirm {
  position: absolute;
  inset: 0;
  z-index: 12;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(24px * var(--co-ui-scale));
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 220ms ease-out,
    visibility 0ms linear 220ms;
}

.quit-confirm.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity 220ms ease-out,
    visibility 0ms linear 0ms;
}

.quit-confirm[hidden] {
  display: none;
}

.quit-confirm__dialog {
  width: min(calc(420px * var(--co-ui-scale)), calc(100vw - 80px * var(--co-ui-scale)));
  padding:
    calc(32px * var(--co-ui-scale))
    calc(36px * var(--co-ui-scale))
    calc(28px * var(--co-ui-scale));
  background: rgba(6, 12, 8, 0.9);
  border: 1px solid rgba(201, 168, 74, 0.35);
  box-shadow:
    inset 0 0 28px rgba(0, 0, 0, 0.35),
    0 8px 32px rgba(0, 0, 0, 0.45);
}

.quit-confirm__title {
  margin-bottom: calc(24px * var(--co-ui-scale));
  font-size: calc(28px * var(--co-ui-scale));
  font-weight: 700;
  letter-spacing: 0.22em;
  text-align: center;
  color: var(--co-amber);
}

.quit-confirm__options {
  display: flex;
  flex-direction: column;
  gap: var(--co-menu-gap);
}

.quit-confirm__option .menu-item__bar {
  left: 0;
  width: 100%;
}

.main-screen.is-quit-confirm-mode .scene-overlay {
  background:
    linear-gradient(
      90deg,
      rgba(6, 10, 8, 0.92) 0%,
      rgba(6, 10, 8, 0.72) 35%,
      rgba(6, 10, 8, 0.55) 60%,
      rgba(6, 10, 8, 0.65) 100%
    ),
    rgba(4, 8, 6, 0.42);
}

@media (prefers-reduced-motion: reduce) {
  .quit-confirm {
    transition: opacity 120ms ease-out, visibility 0ms linear 120ms;
  }

  .quit-confirm.is-open {
    transition: opacity 120ms ease-out, visibility 0ms linear 0ms;
  }
}