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

body {
  font-family: 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', 'Hiragino Mincho Pro', serif;
  background: #0a0a0a;
  color: #d0d0d0;
  overflow-x: hidden;
  min-height: 100vh;
}

.tab-horror-container {
  position: relative;
  min-height: 100vh;
  padding: 40px 20px;
}

.content-screen {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.main-title {
  font-size: 2.5rem;
  text-align: center;
  color: #600;
  margin-bottom: 40px;
  letter-spacing: 0.3em;
  text-shadow: 0 0 20px rgba(136, 0, 0, 0.5);
  animation: text-flicker 3s infinite;
}

.story-section {
  margin-bottom: 60px;
  padding: 30px;
  background: rgba(20, 0, 0, 0.3);
  border: 1px solid #400;
  border-radius: 4px;
}

.story-section p {
  line-height: 1.8;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.diary-entry {
  margin-bottom: 40px;
  padding: 30px;
  background: rgba(10, 10, 10, 0.8);
  border-left: 3px solid #600;
  opacity: 0;
  animation: fade-in 0.8s ease-in forwards;
}

/* Animation delays for each diary entry */
/* content-screen children: h1(1), story-section(2), diary-entry(3-7), warning-text(8) */
.content-screen > .diary-entry:nth-child(3) { animation-delay: 0.2s; }
.content-screen > .diary-entry:nth-child(4) { animation-delay: 0.4s; }
.content-screen > .diary-entry:nth-child(5) { animation-delay: 0.6s; }
.content-screen > .diary-entry:nth-child(6) { animation-delay: 0.8s; }
.content-screen > .diary-entry:nth-child(7) { animation-delay: 1.0s; }

.entry-date {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 15px;
  font-family: monospace;
}

.entry-text p {
  line-height: 1.9;
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.glitch-text {
  color: #a00;
  font-weight: bold;
  animation: glitch 1s infinite;
}

.warning-text {
  margin-top: 80px;
  padding: 20px;
  background: rgba(136, 0, 0, 0.1);
  border: 1px dashed #600;
  text-align: center;
  font-size: 0.95rem;
  color: #888;
}

.warning-text p {
  margin-bottom: 8px;
}

/* Blood overlay */
.blood-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, 
    rgba(136, 0, 0, 0) 0%,
    rgba(136, 0, 0, 0) 40%,
    rgba(136, 0, 0, 0.3) 70%,
    rgba(136, 0, 0, 0.6) 100%);
  pointer-events: none;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.blood-overlay.active {
  opacity: 1;
}

/* Shadow figure */
.shadow-figure {
  position: fixed;
  bottom: 0;
  right: 5%;
  width: 200px;
  height: 400px;
  background: linear-gradient(to top, 
    rgba(0, 0, 0, 0.9) 0%,
    rgba(0, 0, 0, 0.7) 50%,
    rgba(0, 0, 0, 0) 100%);
  filter: blur(15px);
  pointer-events: none;
  z-index: 15;
  opacity: 0;
  transition: opacity 1s ease;
}

.shadow-figure.active {
  opacity: 1;
  animation: shadow-move 3s ease-in-out infinite alternate;
}

/* Eyes overlay */
.eyes-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 20;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.eyes-overlay.active {
  opacity: 1;
}

.eye {
  position: absolute;
  width: 60px;
  height: 40px;
  background: radial-gradient(circle at 50% 50%, 
    #fff 0%, 
    #fff 30%, 
    #000 30%, 
    #000 40%, 
    transparent 40%);
  border-radius: 50%;
  animation: blink 4s infinite;
}

.left-eye {
  top: 20%;
  left: 40%;
}

.right-eye {
  top: 20%;
  left: 55%;
}

/* Animations */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes text-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
  51% { opacity: 1; }
  52% { opacity: 0.8; }
  53% { opacity: 1; }
}

@keyframes glitch {
  0%, 100% {
    text-shadow: 
      2px 0 #f00,
      -2px 0 #0ff;
    transform: translate(0);
  }
  20% {
    text-shadow: 
      -2px 0 #f00,
      2px 0 #0ff;
    transform: translate(-2px, 2px);
  }
  40% {
    text-shadow: 
      2px 0 #0ff,
      -2px 0 #f00;
    transform: translate(2px, -2px);
  }
  60% {
    text-shadow: 
      -2px 0 #0ff,
      2px 0 #f00;
    transform: translate(-2px, 0);
  }
  80% {
    text-shadow: 
      2px 0 #f00,
      -2px 0 #0ff;
    transform: translate(2px, 2px);
  }
}

@keyframes shadow-move {
  from {
    transform: translateX(0) scale(1);
    filter: blur(15px);
  }
  to {
    transform: translateX(-30px) scale(1.1);
    filter: blur(10px);
  }
}

@keyframes blink {
  0%, 49%, 51%, 100% {
    clip-path: ellipse(100% 100% at 50% 50%);
  }
  50% {
    clip-path: ellipse(100% 0% at 50% 50%);
  }
}

/* Returned state - more intense effects */
body.returned {
  animation: screen-shake 0.5s ease;
}

body.returned .content-screen {
  filter: hue-rotate(20deg) brightness(0.7);
}

@keyframes screen-shake {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-2px, 2px); }
  20% { transform: translate(2px, -2px); }
  30% { transform: translate(-2px, -2px); }
  40% { transform: translate(2px, 2px); }
  50% { transform: translate(-2px, 2px); }
  60% { transform: translate(2px, -2px); }
  70% { transform: translate(-2px, -2px); }
  80% { transform: translate(2px, 2px); }
  90% { transform: translate(-2px, 2px); }
}

/* Responsive */
@media (max-width: 768px) {
  .main-title {
    font-size: 2rem;
  }
  
  .diary-entry {
    padding: 20px;
  }
  
  .entry-text p {
    font-size: 1rem;
  }
  
  .eye {
    width: 40px;
    height: 30px;
  }
}