@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@700;800;900&family=Noto+Sans+JP:wght@400;700;900&display=swap');

:root{
  /* パステルで明るく華やか */
  --bg-1: #fff8f2;
  --bg-2: #f7fbff;
  --pastel-1: #ffd6d1;
  --pastel-2: #ffe5a8;
  --pastel-3: #d7f0ff;
  --pastel-4: #e9ddff;
  --accent-1: #ff7f7f;
  --accent-2: #7f9cf5;
  --text-dark: #122020;
  --muted: #6b7280;
  --card: rgba(255,255,255,0.9);
  --glass: rgba(255,255,255,0.7);
  --radius-lg: 22px;
  --radius-md: 14px;
  --shadow-soft: 0 12px 36px rgba(16,24,40,0.08);
  --shadow-2: 0 6px 20px rgba(127,159,245,0.12);
  --sparkle: rgba(255,255,255,0.6);
}

*{box-sizing:border-box}
html,body{height:100%}
body {
  font-family: 'Poppins','Noto Sans JP', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
  margin:0;
  color:var(--text-dark);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  background: radial-gradient(circle at 10% 20%, var(--pastel-3) 0%, transparent 20%),
              radial-gradient(circle at 90% 80%, var(--pastel-2) 0%, transparent 18%),
              linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  background-attachment: fixed;
}

body::after{
  content:"";
  position:fixed;
  left:0; right:0; top:0; height:420px;
  pointer-events:none;
  background:
    radial-gradient(6px 6px at 8% 18%, var(--sparkle) 40%, transparent 41%),
    radial-gradient(5px 5px at 18% 10%, var(--sparkle) 40%, transparent 41%),
    radial-gradient(8px 8px at 85% 22%, var(--sparkle) 40%, transparent 41%),
    radial-gradient(6px 6px at 60% 8%, var(--sparkle) 40%, transparent 41%),
    linear-gradient(180deg, rgba(255,255,255,0.18), transparent 40%);
  mix-blend-mode: screen;
  opacity:0.9;
}

header {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 4vw;
  background: linear-gradient(180deg, rgba(255,248,242,0.95), rgba(247,251,255,0.92));
  backdrop-filter: blur(12px);
  position:sticky;
  top:0;
  z-index:100;
  box-shadow: 0 4px 16px rgba(31,41,55,0.04);
}

.logo-title { display:flex; align-items:center; gap:12px; }
.site-logo{
  width:48px; height:48px;
  border-radius:12px;
  padding:4px;
  background:linear-gradient(135deg,var(--pastel-4),var(--pastel-3));
  box-shadow: 0 8px 26px rgba(127,159,245,0.12);
  object-fit:cover;
}
.site-title{
  font-weight:900;
  font-size:1.45rem;
  color:var(--text-dark);
  letter-spacing:1px;
}

nav#main-nav { 
  display:flex; 
  gap:18px; 
  align-items:center; 
}

nav#main-nav a{
  font-weight:700;
  color:var(--text-dark);
  text-decoration:none;
  padding:10px 16px;
  border-radius:999px;
  transition: transform .18s, background .18s, color .18s;
}

nav#main-nav a i{ 
  margin-right:8px; 
  color:var(--muted);
  transition: color .18s;
}

nav#main-nav a:hover{
  transform:translateY(-3px);
  background: linear-gradient(90deg, rgba(255,127,127,0.12), rgba(127,156,245,0.10));
  color:var(--accent-1);
}

nav#main-nav a:hover i {
  color: var(--accent-1);
}

.menu-btn{
  display:none;
  background:none;
  border:none;
  font-size:2rem;
  color:var(--text-dark);
  cursor:pointer;
  padding:8px 12px;
  transition: color .2s, transform .2s;
}

.menu-btn:active {
  transform: scale(0.95);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px; 
  left: 0; 
  right: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(249,250,255,0.96));
  backdrop-filter: blur(12px);
  padding: 12px 0;
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(31,41,55,0.12);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-menu a {
  display: block;
  padding: 16px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
  border-bottom: 1px solid rgba(20,20,20,0.04);
  text-decoration: none;
  transition: background-color .2s, color .2s;
}

.mobile-menu a:hover {
  background-color: rgba(255,127,127,0.08);
  color: var(--accent-1);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.hero{
  position:relative;
  text-align:center;
  padding:100px 20px 60px;
  margin-top:6vh;
}
.hero-bg{
  position:absolute; left:50%; transform:translateX(-50%); top:0;
  width:88%; height:400px; z-index:0;
  background: linear-gradient(135deg, rgba(255,255,255,0.45), rgba(255,255,255,0.15));
  border-radius:28px;
  filter: blur(18px);
  pointer-events:none;
  opacity:0.85;
}
.hero-inner{ position:relative; z-index:1; max-width:900px; margin:0 auto; }

.hero h1{
  font-size:3.2rem;
  margin:0 0 12px;
  font-weight:900;
  line-height:1;
  background: linear-gradient(90deg, #ff9a9e 0%, #fad0c4 30%, #a1c4fd 60%, #cbb4ff 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-text-fill-color:transparent;
}

.hero p, .hero ul {
  font-size:1.1rem;
  color:var(--text-dark);
  opacity:0.9;
  margin-bottom:18px;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-1);
  margin-bottom: 16px;
  opacity: 1;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-dark);
  opacity: 0.85;
  margin-bottom: 20px;
}

.hero ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.hero ul li {
  margin: 10px 0;
}

.btn, .mini404-btn{
  display:inline-block;
  margin:12px 10px;
  padding:16px 42px;
  border-radius:999px;
  font-weight:800;
  font-size:1.1rem;
  color:#fff;
  border:none;
  cursor:pointer;
  box-shadow: 0 14px 36px rgba(16,24,40,0.12);
  transition: transform .18s, box-shadow .18s, scale .18s;
  text-decoration:none;
}
.btn-primary{ 
  background: linear-gradient(90deg,#ff9a9e,#ff7f50);
  box-shadow: 0 16px 48px rgba(255, 127, 127, 0.28);
}
.btn-secondary{ 
  background: linear-gradient(90deg,#9fd6ff,#7f9cf5);
  box-shadow: 0 16px 48px rgba(127, 159, 245, 0.24);
}
.btn:hover, .mini404-btn:hover{ 
  transform:translateY(-8px); 
  scale: 1.05;
  box-shadow: 0 28px 64px rgba(16,24,40,0.18);
}

.section{ 
  text-align:center; 
  padding:60px 16px; 
  max-width:1200px; 
  margin:0 auto; 
}

.section h2{
  font-size:2rem; 
  margin-bottom:32px; 
  color:var(--text-dark); 
  font-weight:900;
  position: relative;
  display: inline-block;
}

.section h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  border-radius: 2px;
}

.info-block{
  background: var(--card);
  border-radius:var(--radius-md);
  box-shadow: var(--shadow-2);
  padding:20px;
  margin:12px auto;
  max-width:720px;
  color: #374151;
}

.card-container{
  display:flex; flex-wrap:wrap; justify-content:center; gap:18px; align-items:flex-start;
}
.card{
  width:260px;
  background:var(--card);
  border-radius:18px;
  padding:24px;
  display:flex; 
  flex-direction:column; 
  align-items:center;
  box-shadow: var(--shadow-2);
  transition: transform .22s, box-shadow .22s;
}

.card:hover{ 
  transform: translateY(-12px); 
  box-shadow: 0 24px 64px rgba(16,24,40,0.12);
}

.card img{
  width:92px; 
  height:92px; 
  border-radius:14px; 
  object-fit:cover;
  box-shadow: 0 10px 28px rgba(127,159,245,0.08); 
  margin-bottom:12px;
}

.card h3{ 
  margin:12px 0 8px; 
  color:var(--text-dark); 
  font-weight:900;
  font-size: 1.1rem;
}

.card p{ 
  margin:0; 
  color:var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.mini404-main{
  max-width:740px;
  margin:28px auto;
  background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(255,255,255,0.9));
  border-radius:20px;
  padding:28px;
  text-align:center;
  box-shadow: var(--shadow-soft);
}
.mini404-main h1{ color:var(--accent-1); font-weight:900; font-size:2rem; margin-bottom:8px; }
.mini404-main p{ color:var(--text-dark); opacity:0.9 }

.mini404-buttons{
  margin-bottom: 12px;
}

.door-container{ display:flex; justify-content:center; gap:28px; margin-top:20px; flex-wrap:wrap; perspective: 1000px; }
.door{ 
  position:relative; 
  width:140px; height:180px; 
  border-radius:16px; 
  overflow:hidden; 
  background:linear-gradient(180deg,#fff,#fcfdff); 
  box-shadow:0 12px 30px rgba(16,24,40,0.06); 
  cursor:pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}
.door img{ width:100%; height:100%; object-fit:cover; transition:transform .28s, filter .28s; }
.door:hover img{ transform: translateY(-8px) scale(1.03); filter: saturate(1.06); }
.door-number{ 
  position:absolute; top:10px; left:10px; padding:6px 10px; 
  border-radius:12px; 
  background:linear-gradient(90deg,#ff9a9e,#9fd6ff); 
  color:#fff; font-weight:800; 
  box-shadow: 0 2px 6px rgba(35,37,38,0.34);
}

#message { 
  margin-top: 30px; 
  font-size: 1.4em; 
  color: #ff3b5e; 
  text-shadow: 1px 1px 6px rgba(35,37,38,0.2); 
  font-weight: 700;
  letter-spacing: 1px;
}

.rss-widget{
  max-width:760px; margin:28px auto; padding:18px; border-radius:16px;
  background: linear-gradient(180deg,#ffffff,#fbfdff);
  box-shadow: 0 14px 36px rgba(16,24,40,0.05);
}
.rss-title-main {
  font-size: 1.6em;
  font-weight: bold;
  margin-bottom: 16px;
  color: var(--text-dark);
  text-align: center;
}
.rss-item{ 
  padding:12px; margin-bottom:10px; border-radius:12px; 
  background:linear-gradient(180deg,#fff,#f6fbff); 
  box-shadow: 0 6px 18px rgba(127,159,245,0.04);
  transition: background-color 0.2s, transform 0.2s;
}
.rss-item:hover {
  background-color: #f0f7ff;
  transform: translateY(-2px);
}
.rss-item a{ color: #009ecf; font-weight:800; text-decoration:none; }
.rss-item a:hover { color: #66d9ff; text-decoration: underline; }
.rss-meta {
  font-size: 12px;
  color: #aaa;
  margin-top: 6px;
}
.rss-desc {
  font-size: 14px;
  color: #6b7280;
  margin-top: 8px;
}

.results .card{ background: linear-gradient(180deg,#fff,#fcfdff); color:var(--text-dark); }

code{ background:#f6f9ff; padding:4px 8px; border-radius:8px; color:var(--text-dark) }

footer{
  text-align:center;
  padding:40px 16px;
  color:var(--muted);
  margin-top:48px;
  border-top: 1px solid rgba(31,41,55,0.08);
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.3));
}

.footer-content {
  max-width:1200px;
  margin:0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-copy {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: color .2s;
}

.footer-links a:hover {
  color: var(--accent-1);
}

@media (max-width:900px){
  .hero h1{ font-size:2.4rem; }
  .card{ width:86%; max-width:420px; }
}

@media (max-width:700px){
  .door-container { gap: 14px; }
  .door { width: 100px; height: 130px; }
  .mini404-main { padding: 24px 8px; }
}

@media (max-width:600px){
  nav#main-nav{ display:none; }
  .menu-btn{ display:block; }
  header{ padding:14px 4vw; }
  
  .hero{ padding:60px 16px 40px; margin-top:4vh; }
  .hero-bg{ height:260px; }
  .hero h1{ font-size:2rem; line-height: 1.2; }
  .hero-subtitle { font-size: 1.1rem; }
  .hero-description { font-size: 1rem; }
  
  .btn, .mini404-btn {
    padding: 14px 32px;
    font-size: 1rem;
    margin: 10px 8px;
  }
  
  .section {
    padding: 48px 12px;
  }
  
  .section h2 {
    font-size: 1.5rem;
    margin-bottom: 24px;
  }
  
  .card-container {
    gap: 14px;
  }
  
  .card {
    width: 100%;
    max-width: 340px;
    padding: 20px;
  }
  
  .card h3 {
    font-size: 1rem;
  }
  
  .card p {
    font-size: 0.9rem;
  }
  
  .footer-links {
    gap: 16px;
  }
  
  .footer-links a {
    font-size: 0.9rem;
  }
}

@media (max-width:480px){
  header { padding: 12px 3vw; }
  
  .logo-title { gap: 8px; }
  
  .site-logo { width: 40px; height: 40px; }
  
  .site-title { font-size: 1.2rem; }
  
  .menu-btn { font-size: 1.8rem; }
  
  .hero h1 { font-size: 1.7rem; }
  
  .hero-subtitle { font-size: 1rem; }
  
  .hero-description { font-size: 0.95rem; }
  
  .btn, .mini404-btn {
    padding: 12px 28px;
    font-size: 0.95rem;
    margin: 8px 6px;
  }
  
  .card {
    width: 100%;
    padding: 18px;
  }
  
  .section h2 {
    font-size: 1.3rem;
  }
}