:root {
  --bg: #0f0f0f;
  --fg: #f0f0f0;
  --accent: #00ffff;
  --card-bg: #1a1a1a;
}

body {
  margin: 0;
  font-family: 'Share Tech Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
}

.page-container {
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  height: 100vh;
}

.page {
  height: 100vh;
  flex-direction: column;
  width: 100vw;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  justify-content: center;  
  position: relative;
}

.hero {
  position: relative;
  height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('assets/soul_tide_banner.png') center/cover no-repeat;
  filter: brightness(0.1) blur(8px);
  z-index: 0;
  opacity: 0;
  transition: none;
}

.hero-bg.glitch {
  animation: glitchReveal 1.2s steps(5, end) forwards;
}

@keyframes glitchReveal {
  0%   { opacity: 0; filter: brightness(0.1) blur(8px); }
  20%  { opacity: 1; filter: brightness(0.6) blur(4px); }
  40%  { opacity: 0.3; filter: brightness(0.3) blur(6px); }
  60%  { opacity: 1; filter: brightness(0.8) blur(2px); }
  80%  { opacity: 0.5; filter: brightness(0.5) blur(5px); }
  100% { opacity: 1; filter: brightness(1) blur(0); }
}


.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 10, 40, 0.6);
  z-index: 1;
}

.hero-text {
  z-index: 2;
  color: var(--accent);
  max-width: 800px;
  padding: 2em;
}


.typewriter {

  font-size: 3.2rem;
  color: #e0e0e0;
  text-shadow: 0 0 8px #ff4f81;

  overflow: hidden;
  white-space: nowrap;
  margin-top: 10%;
  border-right: 2px solid #00ffff;
  animation: typing 3s steps(20, end), blink 0.7s step-end infinite;
}

.subtitle {
  font-size: 1.2rem;
  color: #c0aaff;
  margin-top: 0.5em;
  letter-spacing: 2px;
}

.container {
  position: relative;
  text-align: center;
  margin-top: 20vh;
}

.scroll-indicator {
  position: absolute; /* 改为 fixed，确保始终在视口底部 */
  bottom: 40px;     /* 距离底部更近 */
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
  opacity: 0;
  animation: fadeInScroll 1s ease-in 2s forwards;
}

.mouse-svg {
  width: 32px;
  height: auto;
  opacity: 0.8;
}

.arrow-svg {
  width: 20px;
  height: auto;
  margin-top: 8px;
  animation: bounceArrow 1.5s infinite;
  opacity: 0.8;
}

.mouse-svg,
.arrow-svg {
  filter: brightness(1000%) invert(100%);
  opacity: 0.9;
}


@keyframes fadeInScroll {
  to { opacity: 1; }
}

@keyframes bounceArrow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}


@keyframes fadeInArrow {
  to { opacity: 1; }
}


@keyframes fadeInSegment {
  to { opacity: 1; }
}


@keyframes fadeInBtn {
  to { opacity: 1; }
}


@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}

@keyframes blink {
  50% { border-color: transparent }
}

.neon-btn {
  background: transparent;
  border: 2px solid #00ffff;
  color: #00ffff;
  padding: 0.8em 1.5em;
  border-radius: 5px;
  font-weight: bold;
  text-decoration: none;
  box-shadow: 0 0 10px #00ffff;
  transition: all 0.3s ease;
}

.neon-btn:hover {
  box-shadow: 0 0 20px #00ffff;
  transform: scale(1.05);
}


@keyframes pulse {
  0% { box-shadow: 0 0 5px var(--accent); }
  50% { box-shadow: 0 0 20px var(--accent); }
  100% { box-shadow: 0 0 5px var(--accent); }
}

.features, .gallery, .video, .about {
  padding: 4em 2em;
  text-align: center;
}

.card-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  justify-content: center;
  margin-top: 2em;
}

.card {
  background: var(--card-bg);
  padding: 1.5em;
  border-radius: 10px;
  width: 250px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--accent);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 15px var(--accent);
}

.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1em;
  margin-top: 2em;
}

.img-grid img {
  width: 100%;
  border-radius: 10px;
}

.video video {
  width: 100%;
  max-width: 800px;
  border-radius: 10px;
  margin-top: 2em;
}

footer {
  background: #111;
  padding: 2em;
  text-align: center;
  font-size: 0.9em;
}

footer a {
  color: var(--accent);
  text-decoration: none;
  margin: 0 0.5em;
}

/* Loader */
#loader {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeOut 2s forwards 2s;
}

.chip {
  width: 60px;
  height: 60px;
  border: 4px solid var(--accent);
  border-top: 4px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeOut {
  to { opacity: 0; visibility: hidden; }
}


/* ================================= */
/* PAGE 2*/

.glitch-bg-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}


#page3 {
  background: url('assets/stoty_background.png') center/cover no-repeat;
  color: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem;
}

#glitchCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
  background: transparent;
}

.intro-container {
  max-width: 800px;
  text-align: center;
  animation: fadeInUp 1.5s ease-out;
  backdrop-filter: blur(2px);
}

.intro-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  text-shadow: 0 0 6px #ff4f81;
}

.intro-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #ccc;
  margin-bottom: 2rem;
}

.glitch-box {
  font-family: 'Share Tech Mono', monospace;
  font-size: 1rem;
  color: #ff4f81;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.8rem 1.2rem;
  border: 1px solid #ff4f81;
  display: inline-block;
  animation: glitchAnim 2s infinite;
}

@keyframes glitchAnim {
  0% { transform: translate(0); }
  20% { transform: translate(-2px, 2px); }
  40% { transform: translate(2px, -2px); }
  60% { transform: translate(-1px, 1px); }
  80% { transform: translate(1px, -1px); }
  100% { transform: translate(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}


/* ================================= */
/* PAGE 3 */

#page4 {
  margin: 0;
  background: #000;
  color: #fff;
  font-family: 'Share Tech Mono', monospace;
}

.system_container {
  display: flex;
  height: 100vh;
  width: 100vw;
}

.sidebar {
  width: 140px;
  background: #111;
  border-right: 2px solid #ff0033;
  padding: 1rem 0.5rem;
}

.sidebar ul {
  list-style: none;
  padding: 0;
}

.sidebar li {
  padding: 0.6rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

.sidebar li:hover {
  border-left: 3px solid #ff0033;
  background: #1a1a1a;
}

.content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightboard {
  width: 80%;
  height: 80%;
  background: rgba(20, 20, 20, 0.85);
  border: 2px solid #ff0033;
  box-shadow: 0 0 20px #ff0033;
  padding: 2rem 3rem;
  overflow-y: auto;
  animation: floatIn 0.4s ease;
}

.panel-text h2 {
  color: #ff0033;
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.panel-text p {
  line-height: 1.6;
  font-size: 1rem;
  margin-bottom: 1rem;
}

@keyframes floatIn {
  0% {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ================================= */
/* PAGE 4 */
.video-page {
  background: #000;
  color: #fff;
  font-family: 'Share Tech Mono', monospace;
  height: 100vh;
  padding: 2rem;
  position: relative;
}

.video-header {
  position: absolute;
  top: 1rem;
  left: 2rem;
  color: #ff0033;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.video-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.video-frame {
  width: 80%;
  max-width: 960px;
  border: 2px solid #ff0033;
  box-shadow: 0 0 20px #ff0033;
  padding: 0.5rem;
  background: #111;
}

video {
  width: 100%;
  height: auto;
  background: #000;
}

.video-info {
  margin-top: 2rem;
  text-align: center;
  max-width: 800px;
}

.video-info h2 {
  color: #ff0033;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.video-info p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.tags {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.tags span {
  background: #ff0033;
  color: #000;
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
  border-radius: 3px;
}