:root {
  --text: #f3efe4;
  --accent: #c41313;
  --panel: rgba(14, 12, 10, 0.78);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #050505;
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

#gameCanvas {
  width: 100vw;
  height: 100vh;
  display: block;
  transition: transform 55ms linear;
}

#screenShake,
#bloodOverlay,
#flashlightMask {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#screenShake {
  transition: transform 70ms linear;
  z-index: 2;
}

#bloodOverlay {
  background: radial-gradient(
    circle at center,
    rgba(0, 0, 0, 0) 18%,
    rgba(128, 0, 0, 0.18) 55%,
    rgba(88, 0, 0, 0.58) 100%
  );
  opacity: 0;
  transition: opacity 140ms linear;
  mix-blend-mode: screen;
  z-index: 3;
}

#flashlightMask {
  background: radial-gradient(
    circle at center,
    rgba(0, 0, 0, 0) 8%,
    rgba(0, 0, 0, 0.45) 22%,
    rgba(0, 0, 0, 0.86) 55%,
    rgba(0, 0, 0, 0.96) 100%
  );
  z-index: 1;
}

.hud {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: min(860px, 95vw);
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: var(--panel);
  backdrop-filter: blur(2px);
  z-index: 5;
  display: none;
}

.hud-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
}

.hud-row + .hud-row {
  margin-top: 0.45rem;
}

#staminaBar {
  flex: 1;
  height: 12px;
}

#staminaBar::-webkit-progress-value {
  background: linear-gradient(90deg, #8f1111, #d23f3f);
}

#staminaBar::-webkit-progress-bar {
  background: rgba(255, 255, 255, 0.15);
}

#centerPrompt {
  position: fixed;
  left: 50%;
  bottom: 12%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 0.55rem 1rem;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  z-index: 6;
}

.objective-flash {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 0.65rem 1.15rem;
  border: 1px solid rgba(255, 255, 255, 0.75);
  background: rgba(0, 0, 0, 0.72);
  color: #fff2cf;
  letter-spacing: 0.07em;
  font-size: clamp(1rem, 2.1vw, 1.55rem);
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.55);
  animation: objectivePulse 0.46s steps(1, end) infinite;
  z-index: 9;
  pointer-events: none;
}

@keyframes objectivePulse {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.2;
  }
  100% {
    opacity: 1;
  }
}

.page-readout {
  position: fixed;
  left: 14px;
  bottom: 16px;
  width: min(620px, calc(100vw - 28px));
  padding: 0.65rem 0.8rem;
  font-size: 0.88rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(8, 8, 8, 0.75);
  z-index: 7;
  color: #e9e3d2;
  line-height: 1.4;
}

.menu-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  padding: 1.2rem;
  background: rgba(6, 6, 6, 0.74);
  z-index: 8;
}

.start-screen {
  display: block;
  padding: 0;
  text-align: left;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.86) 0%, rgba(0, 0, 0, 0.58) 30%, rgba(0, 0, 0, 0.38) 55%, rgba(0, 0, 0, 0.72) 100%),
    radial-gradient(circle at 74% 12%, rgba(255, 255, 255, 0.1), rgba(0, 0, 0, 0) 42%),
    radial-gradient(circle at 26% 70%, rgba(255, 255, 255, 0.08), rgba(0, 0, 0, 0) 52%);
}

.start-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 55%, rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0.72) 100%),
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.018) 0px,
      rgba(255, 255, 255, 0.018) 1px,
      rgba(0, 0, 0, 0.018) 1px,
      rgba(0, 0, 0, 0.018) 3px
    );
  z-index: 0;
}

.start-screen .menu-layout {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: minmax(240px, 320px) 1fr;
  align-items: center;
  gap: clamp(1rem, 3vw, 3rem);
  padding: clamp(1rem, 3.5vw, 3rem);
}

.menu-left {
  width: min(320px, 92vw);
  padding: clamp(0.8rem, 2vw, 1.2rem);
  background: linear-gradient(180deg, rgba(28, 28, 28, 0.78), rgba(10, 10, 10, 0.68));
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 0 42px rgba(0, 0, 0, 0.44);
}

.menu-right {
  justify-self: end;
  align-self: start;
  margin-top: clamp(0.35rem, 2vh, 1.2rem);
  margin-right: clamp(0.4rem, 2vw, 1.6rem);
}

.menu-title {
  margin: 0;
  color: #f5f2eb;
  font-family: "Impact", "Haettenschweiler", "Arial Narrow Bold", "Times New Roman", serif;
  font-size: clamp(2.5rem, 8.2vw, 6.5rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 0.92;
  text-shadow: 0 6px 12px rgba(0, 0, 0, 0.78), 0 0 18px rgba(255, 255, 255, 0.2);
}

.menu-subtitle {
  margin: 0.45rem 0 0;
  font-size: clamp(0.78rem, 1.4vw, 1.1rem);
  letter-spacing: 0.24em;
  color: #d7d1c2;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.75);
}

.menu-note {
  margin: 0.7rem 0 0;
  color: rgba(238, 232, 219, 0.82);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
}

.loading-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.5rem;
  text-align: center;
  background:
    radial-gradient(circle at 50% 42%, rgba(255, 235, 196, 0.1), rgba(0, 0, 0, 0) 38%),
    rgba(4, 4, 4, 0.92);
  z-index: 11;
}

.loading-screen h2 {
  margin: 0;
  letter-spacing: 0.08em;
}

.loading-screen p {
  margin: 0;
  opacity: 0.85;
  letter-spacing: 0.04em;
}

.menu-screen h1,
.menu-screen h2 {
  margin: 0;
  letter-spacing: 0.04em;
}

.menu-screen p {
  margin: 0;
  max-width: 760px;
}

button {
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(15, 15, 15, 0.8);
  color: var(--text);
  padding: 0.55rem 1rem;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: rgba(180, 17, 17, 0.45);
}

.menu-buttons {
  margin-top: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.55rem;
}

.menu-btn {
  min-width: 220px;
  width: 100%;
  text-align: left;
  padding: 0.62rem 0.95rem;
  font-size: 1.02rem;
  transition: transform 130ms ease, background-color 130ms ease, border-color 130ms ease;
}

.menu-btn:hover {
  transform: scale(1.06);
  border-color: rgba(255, 255, 255, 0.7);
}

.menu-btn:disabled {
  opacity: 0.55;
  cursor: default;
}

.menu-btn:disabled:hover {
  transform: none;
  border-color: rgba(255, 255, 255, 0.35);
}

.menu-btn-primary {
  background: rgba(160, 22, 22, 0.62);
}

.settings-panel {
  margin: 0.8rem 0 0;
  width: 100%;
  padding: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(0, 0, 0, 0.66);
  text-align: left;
  display: grid;
  gap: 0.45rem;
}

.settings-panel h3 {
  margin: 0 0 0.2rem;
  letter-spacing: 0.04em;
}

.settings-panel label {
  font-size: 0.92rem;
}

.settings-panel input[type="range"] {
  width: 100%;
}

.settings-panel .menu-btn {
  margin-top: 0.2rem;
  justify-self: stretch;
}

.start-static {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 14;
  opacity: 0;
  display: none;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.16) 0px,
      rgba(255, 255, 255, 0.16) 1px,
      rgba(0, 0, 0, 0.16) 1px,
      rgba(0, 0, 0, 0.16) 3px
    ),
    radial-gradient(circle at 50% 45%, rgba(255, 255, 255, 0.2), rgba(0, 0, 0, 0.45) 70%);
  mix-blend-mode: screen;
}

.start-static.active {
  display: block;
  animation: startupStatic 780ms steps(2, end) 1 forwards;
}

@keyframes startupStatic {
  0% {
    opacity: 0;
    transform: translate(0, 0) scale(1);
  }
  12% {
    opacity: 0.95;
    transform: translate(2px, -1px) scale(1.01);
  }
  42% {
    opacity: 0.75;
    transform: translate(-3px, 2px) scale(1.015);
  }
  75% {
    opacity: 0.48;
    transform: translate(1px, -2px) scale(1.005);
  }
  100% {
    opacity: 0;
    transform: translate(0, 0) scale(1);
  }
}

.hidden {
  display: none;
}

@media (max-width: 720px) {
  .hud-row {
    flex-wrap: wrap;
  }

  .start-screen .menu-layout {
    grid-template-columns: 1fr;
    align-items: end;
    gap: 0.8rem;
  }

  .menu-right {
    justify-self: start;
    align-self: start;
    margin: 0;
  }

  .menu-title {
    letter-spacing: 0.08em;
  }
}