/* ===== Elegant Graduation Website ===== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Playfair+Display:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
  --bg: #0c0c14;
  --bg-light: #16161f;
  --primary-color: #d4a853;   /* gold */
  --secondary-color: #c9787e; /* rose */
  --accent-color: #8b7ec8;    /* lavender */
  --sky: #6ba3be;
  --mint: #6bc9a8;
  --text: #e8e8ec;
  --text-dim: #8888a0;
  --font-display: 'Playfair Display', serif;
  --font-body: 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Backward-compat aliases */
:root {
  --gold: var(--primary-color);
  --rose: var(--secondary-color);
  --lavender: var(--accent-color);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  min-height: 100dvh;
  min-height: 100vh; /* fallback */
  cursor: none;
}

/* ===== Custom Cursor ===== */
.custom-cursor,
.cursor-trail {
  display: none;
}

.cursor-bug-text {
  position: fixed;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: bold;
  pointer-events: none;
  z-index: 10000;
  white-space: nowrap;
  transform: translate(-50%, -50%);
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--sky), var(--mint));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 6px rgba(212, 168, 83, 0.5));
}

.cursor-bug-text.bug-enter {
  animation: bugEnter 0.25s ease forwards;
}

.cursor-bug-text.bug-exit {
  animation: bugExit 0.2s ease forwards;
}

@keyframes bugEnter {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(2) rotate(10deg); filter: drop-shadow(0 0 20px rgba(212,168,83,0.8)) blur(4px); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(0.9) rotate(-5deg); filter: drop-shadow(0 0 10px rgba(201,120,126,0.6)) blur(0); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(0deg); filter: drop-shadow(0 0 6px rgba(212,168,83,0.5)) blur(0); }
}

@keyframes bugExit {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(1); filter: drop-shadow(0 0 6px rgba(212,168,83,0.5)) blur(0); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(3) rotate(-15deg); filter: drop-shadow(0 0 25px rgba(139,126,200,0.9)) blur(6px); }
}

/* ===== Scene System ===== */
.scene {
  position: fixed;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s ease;
  background: var(--bg);
}

.scene.active {
  opacity: 1;
  visibility: visible;
}

.scene.active .scene1-content,
.scene.active .certificate-hall,
.scene.active .gallery-container,
.scene.active .graduation-message {
  animation: sceneContentIn 0.6s ease forwards;
}

@keyframes sceneContentIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Audio Control ===== */
.bgm-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid rgba(212, 168, 83, 0.3);
  background: rgba(12, 12, 20, 0.6);
  backdrop-filter: blur(8px);
  color: var(--primary-color);
  font-size: 1.1rem;
  cursor: none;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.3s ease;
}

.bgm-toggle:hover {
  border-color: var(--primary-color);
  background: rgba(212, 168, 83, 0.1);
  transform: scale(1.1);
}

.bgm-toggle.muted {
  opacity: 0.4;
  color: var(--text-dim);
}

/* ===== SCENE 1: Entrance ===== */
#scene1 {
  background: var(--bg);
  z-index: 1;
}

#codeRain {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100dvh;
  height: 100vh; /* fallback */
  opacity: 0.35;
}

.scene1-content {
  position: relative;
  z-index: 10;
  text-align: center;
}

.single-photo {
  width: 360px;
  height: 360px;
  margin: 0 auto 32px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid rgba(212, 168, 83, 0.4);
  animation: float 4s ease-in-out infinite;
  cursor: none;
  transition: border-color 0.3s ease;
}

.single-photo:hover {
  border-color: var(--primary-color);
}

.single-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 500;
  color: var(--text);
  margin-bottom: 36px;
}

.title::after {
  content: '';
  display: block;
  width: 50px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  margin: 16px auto 0;
}

.village-gate {
  padding: 28px 40px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  transition: border-color 0.3s ease;
}

.village-gate:hover {
  border-color: rgba(212, 168, 83, 0.15);
}

.question {
  font-size: 1.2rem;
  color: var(--text-dim);
  margin-bottom: 20px;
  font-weight: 300;
}

.pixel-btn {
  padding: 14px 48px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--bg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border: none;
  border-radius: 30px;
  cursor: none;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 20px rgba(212, 168, 83, 0.2);
}

.pixel-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212, 168, 83, 0.35);
}

.pixel-btn:active {
  transform: translateY(0);
}

/* ===== SCENE 2: Meteor Shower ===== */
#scene2 {
  background: var(--bg);
  z-index: 100;
}

#meteorShower {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100dvh;
  height: 100vh; /* fallback */
}

/* ===== SCENE 3: Certificates ===== */
#scene3 {
  background: var(--bg);
  flex-direction: column;
  z-index: 1;
}

.certificate-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.bg-blur {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0.4);
  transition: filter 1s ease;
}

#scene3.blurred .bg-blur {
  filter: brightness(0.25) blur(8px);
}

.certificate-hall {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 2rem;
}

.hall-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 500;
  color: var(--primary-color);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(-20px);
  transition: all 0.8s ease 0.3s;
}

#scene3.blurred .hall-title {
  opacity: 1;
  transform: translateY(0);
}

.certificate-ring {
  position: relative;
  width: min(90vw, 600px);
  height: min(70vh, 500px);
  margin: 0 auto;
}

.certificate {
  position: absolute;
  width: min(140px, 22vw);
  height: min(180px, 28vh);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  filter: blur(5px);
  transition: filter 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}

.certificate:hover {
  filter: blur(0);
  box-shadow: 0 12px 40px rgba(212, 168, 83, 0.3);
  transform: scale(1.08);
  z-index: 100;
}

.certificate img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cert-name {
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.7rem;
  color: var(--primary-color);
  opacity: 0;
  transition: opacity 0.2s ease;
  background: rgba(12, 12, 20, 0.9);
  padding: 4px 10px;
  border-radius: 4px;
}

.certificate:hover .cert-name { opacity: 1; }

/* Certificate Lightbox */
.cert-lightbox {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0);
  visibility: hidden;
  opacity: 0;
  transition: all 0.3s ease;
  cursor: pointer;
}

.cert-lightbox.active {
  background: rgba(0, 0, 0, 0.85);
  visibility: visible;
  opacity: 1;
}

.cert-lightbox-inner {
  position: relative;
  max-width: 80vw;
  max-height: 80vh;
  transform: scale(0.8);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cert-lightbox.active .cert-lightbox-inner {
  transform: scale(1);
}

.cert-lightbox-inner img {
  max-width: 80vw;
  max-height: 75vh;
  border-radius: 12px;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.6);
  object-fit: contain;
}

.cert-lightbox-name {
  display: block;
  text-align: center;
  margin-top: 16px;
  font-size: 1.1rem;
  color: var(--primary-color);
  font-weight: 500;
}

.cert-lightbox-close {
  position: absolute;
  top: -40px;
  right: -10px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  background: rgba(12, 12, 20, 0.6);
  color: var(--text);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.2s ease;
}

.cert-lightbox-close:hover {
  border-color: var(--secondary-color);
  background: rgba(201, 120, 126, 0.2);
}

/* ===== SCENE 4: Gallery ===== */
#scene4 {
  background: #0a0a12;
  overflow: hidden;
  z-index: 1;
}

#galleryBg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.gallery-container {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 50px;
  padding: 40px;
}

.gallery-item {
  position: relative;
  width: 380px;
  height: 480px;
  border-radius: 16px;
  overflow: hidden;
  cursor: none;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  will-change: transform;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  flex-shrink: 0;
}

.gallery-item::after {
  content: attr(data-label);
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  z-index: 2;
  opacity: 0;
  transition: all 0.3s ease;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.gallery-item:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 30px 80px rgba(212, 168, 83, 0.15);
}

.gallery-item:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

/* ===== SCENE 5: Graduation Message ===== */
#scene5 {
  background: var(--bg);
  flex-direction: column;
  z-index: 1;
}

#starsBg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.graduation-message {
  position: relative;
  z-index: 10;
  width: 90%;
  max-width: 800px;
  height: 70%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.char-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.char-row {
  display: flex;
  gap: 4px;
}

.speech-bubble {
  min-width: 58px;
  height: 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 8px;
  font-size: 0.6rem;
  font-weight: 500;
  color: #fff;
  opacity: 0;
  transform: scale(0);
  animation: bubblePop 0.5s forwards;
  cursor: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  will-change: transform;
}

.speech-bubble:hover {
  transform: scale(1.15) !important;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.speech-bubble.cyan { background: linear-gradient(135deg, #5ba3c9, #4a8fb5); }
.speech-bubble.magenta { background: linear-gradient(135deg, #c9787e, #b5656b); }
.speech-bubble.green { background: linear-gradient(135deg, #6bc9a8, #5ab897); }
.speech-bubble.purple { background: linear-gradient(135deg, #8b7ec8, #7a6db7); }
.speech-bubble.pink { background: linear-gradient(135deg, #d4a0b5, #c38da2); }
.speech-bubble.yellow { background: linear-gradient(135deg, #d4b87a, #c3a769); }

.restart-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  font-size: 0.85rem;
  color: var(--text-dim);
  opacity: 0;
  animation: fadeIn 1s forwards 5s;
}

/* ===== Animations ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes bubblePop {
  0% { opacity: 0; transform: scale(0); }
  70% { transform: scale(1.05); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 0.7; }
}

@keyframes pixelExplode {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

.pixel-particle {
  position: fixed;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  animation: pixelExplode 0.5s ease forwards;
  box-shadow: 0 0 8px currentColor;
}

/* ===== Mobile Touch Effects ===== */
.touch-ripple {
  position: fixed;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%) scale(0);
  animation: rippleExpand 0.8s ease-out forwards;
}

@keyframes rippleExpand {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 0.7; }
  100% { transform: translate(-50%, -50%) scale(3); opacity: 0; }
}

.touch-trail {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  animation: trailFade 0.6s ease-out forwards;
}

@keyframes trailFade {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(0); opacity: 0; }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .gallery-container { gap: 30px; padding: 20px; }
  .gallery-item { width: min(320px, 45vw); height: min(400px, 60vh); }
  .certificate-ring { width: min(85vw, 450px); height: min(65vh, 400px); }
  .certificate { width: min(110px, 18vw); height: min(140px, 22vh); }
  .char-container { transform: scale(0.7); transform-origin: center center; }
}

@media (max-width: 600px) {
  .gallery-container { flex-direction: column; gap: 20px; }
  .gallery-item { width: min(300px, 85vw); height: min(380px, 45vh); }
  .single-photo { width: 200px; height: 200px; margin-bottom: 24px; }
  .certificate-ring { width: min(90vw, 350px); height: min(60vh, 350px); }
  .certificate { width: min(80px, 15vw); height: min(100px, 18vh); }
  .speech-bubble { min-width: 48px; height: 30px; font-size: 0.5rem; }
  .bgm-toggle { width: 34px; height: 34px; top: 12px; right: 12px; font-size: 0.9rem; }
  .cert-lightbox-inner img { max-width: 95vw; max-height: 70vh; }
  .village-gate { padding: 20px 24px; }
  .question { font-size: 1rem; margin-bottom: 16px; }
  .pixel-btn { padding: 12px 36px; font-size: 0.9rem; }
  .title { margin-bottom: 24px; }
  .graduation-message { height: 60%; }
  .restart-hint { bottom: 24px; font-size: 0.75rem; }
  .char-container { transform: scale(0.5); transform-origin: center center; }
}

/* ===== Touch Device: hide custom cursor ===== */
@media (pointer: coarse) {
  body { cursor: auto !important; }
  .cursor-bug-text { display: none !important; }
  .single-photo, .pixel-btn, .gallery-item, .bgm-toggle, .speech-bubble { cursor: auto !important; }
  .certificate { cursor: pointer !important; }
  .cert-lightbox { cursor: default !important; }
  .cert-lightbox-close { cursor: pointer !important; }
}

/* ===== Touch Device: hover → active for certificates ===== */
@media (pointer: coarse) {
  .certificate:active {
    filter: blur(0);
    box-shadow: 0 12px 40px rgba(212, 168, 83, 0.3);
    transform: scale(1.08);
    z-index: 100;
  }
  .certificate:hover {
    filter: blur(5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    transform: none;
  }
  .gallery-item:hover {
    transform: none;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  }
  .gallery-item:active {
    transform: translateY(-12px) scale(1.03);
    box-shadow: 0 30px 80px rgba(212, 168, 83, 0.15);
  }
  .gallery-item:hover::after {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  .gallery-item:active::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  .speech-bubble:active {
    transform: scale(1.15) !important;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
  }
  .speech-bubble:hover {
    transform: scale(0) !important;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .single-photo { animation: none; }
  .restart-hint { animation: none; opacity: 0.7; }
}