@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600&family=IBM+Plex+Sans:wght@400;500&family=IBM+Plex+Mono:wght@500&display=swap");

:root {
  --bg: #14171f;
  --panel: rgba(20, 23, 31, 0.82);
  --accent: #c97c3d;
  --text: #f0ede6;
  --text-dim: #9ba3b4;
  --border: rgba(240, 237, 230, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
}

a-scene {
  width: 100%;
  height: 100vh;
}

/* ---------- Pantallas de inicio / fin ---------- */

.screen {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s ease;
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
}

.screen-content {
  text-align: center;
  max-width: 480px;
  padding: 0 28px;
}

#screen-logo {
  display: block;
  width: 120px;
  height: auto;
  margin: 0 auto 28px;
  object-fit: contain;
}

.screen-label {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.screen-title {
  font-family: "Fraunces", serif;
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 12px;
}

.screen-sub {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-dim);
  margin: 0 0 40px;
}

.btn-main {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 14px 40px;
  border-radius: 3px;
  border: none;
  background: var(--accent);
  color: #14171f;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn-main:hover {
  background: #d68a4d;
}

/* ---------- Overlay de transición ---------- */

#transition-overlay {
  position: fixed;
  inset: 0;
  background: #000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  z-index: 5;
}

#transition-overlay.active {
  opacity: 1;
}

/* ---------- HUD ---------- */

#hud {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  padding: 0 20px 24px;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

#hud.hud--hidden {
  opacity: 0;
  pointer-events: none;
}

#hud-panel {
  pointer-events: auto;
  width: min(560px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  border-radius: 4px;
  padding: 18px 20px;
}

#hud-counter {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 6px;
}

#hud-title {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 22px;
  line-height: 1.15;
  margin: 0 0 6px;
}

#hud-desc {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-dim);
  margin: 0 0 16px;
}

#hud-controls {
  display: flex;
  gap: 10px;
}

#hud-controls button {
  flex: 1;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 10px 14px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

#hud-controls button:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(201, 124, 61, 0.12);
}

#hud-controls button:disabled {
  opacity: 0.3;
  cursor: default;
}

#hud-controls button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #14171f;
}

#hud-controls button.primary:hover {
  background: #d68a4d;
}

/* ---------- Top bar ---------- */

#topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  pointer-events: none;
}

#topbar-title {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

#topbar-actions {
  display: flex;
  gap: 8px;
  pointer-events: auto;
}

#btn-mute {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 4px 8px;
  transition: border-color 0.15s ease;
}

#btn-mute:hover {
  border-color: var(--accent);
}

#btn-reset {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  padding: 4px 9px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

#btn-reset:hover {
  border-color: #e05555;
  color: #e05555;
}

/* ---------- Footer de créditos ---------- */

.screen-footer {
  position: absolute;
  bottom: 18px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(155, 163, 180, 0.45);
  pointer-events: none;
}

@media (max-width: 480px) {
  #hud-title {
    font-size: 19px;
  }
}