/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic Pro', sans-serif;
  background: #fff;
  color: #333;
  margin: 0;
  padding: 0;
}

main {
  margin: 0;
  padding: 0;
  display: block;
}

/* ===== NAVBAR ===== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 40px;
  background: white;
  border-bottom: 1px solid #f9d0e0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo img {
  height: 60px;
  width: auto;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 35px;
}

.nav-links a {
  text-decoration: none;
  color: #666;
  font-size: 14px;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: #e87ca0;
}

/* ===== HOME PAGE ===== */
.hero {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.hero-image {
  width: 100%;
  height: calc(100vh - 81px);
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* ===== ABOUT PAGE ===== */
.about-page {
  height: calc(100vh - 81px);
  background: #ff6b8a;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 60px;
  position: relative;
  overflow: hidden;
}

.about-illustration {
  position: absolute;
  left: -20px;
  bottom: 0;
  height: 100%;
  object-fit: contain;
  object-position: bottom left;
  z-index: 1;
}

.about-name-bg {
  position: absolute;
  left: 70%;
  top: 30%;
  transform: translate(-50%, -50%);
  font-size: 220px;
  font-weight: 900;
  color: white;
  opacity: 0.4;
  letter-spacing: -5px;
  pointer-events: none;
  white-space: nowrap;
  z-index: 0;
}

.about-card {
  background: #e8724a;
  color: white;
  padding: 35px 40px;
  max-width: 420px;
  max-height: 80vh;
  overflow-y: auto;
  border-radius: 4px;
  line-height: 2;
  font-size: 14px;
  position: relative;
  z-index: 3;
  align-self: flex-end;
}

.about-card p {
  margin-bottom: 12px;
}

/* ===== CREDITS SECTION ===== */
.credits-section {
  background: #fff;
  padding: 80px 60px;
  text-align: center;
}

.credits-title {
  font-size: 72px;
  font-weight: 900;
  color: #e8e8e8;
  letter-spacing: 0.05em;
  margin-bottom: 40px;
}

.credits-content {
  max-width: 500px;
  margin: 0 auto;
  text-align: left;
}

.credits-subtitle {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #555;
  margin-bottom: 24px;
}

.credits-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.credits-list li {
  font-size: 14px;
  color: #777;
}

.credits-list a {
  color: #e87ca0;
  text-decoration: none;
}

.credits-list a:hover {
  text-decoration: underline;
}

/* ===== TWITTER PAGE ===== */
.twitter-page {
  min-height: calc(100vh - 81px);
  padding: 60px 40px;
  background: #fff5f8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
}

.twitter-page h1 {
  color: #e87ca0;
  font-size: 32px;
}

.twitter-link-btn {
  display: inline-block;
  background: #e87ca0;
  color: white;
  padding: 16px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 16px;
  letter-spacing: 0.05em;
  transition: background 0.2s;
}

.twitter-link-btn:hover {
  background: #d4608a;
}

/* ===== MESSAGE PAGE ===== */
.message-page {
  min-height: calc(100vh - 81px);
  width: 100%;
}

.message-images {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
}

.message-images img {
  width: 100%;
  display: block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 15px;
    padding: 15px 20px;
  }

  .nav-links {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .about-page {
    padding: 30px 20px;
    justify-content: center;
    height: auto;
    min-height: calc(100vh - 81px);
  }

  .about-name-bg {
    font-size: 80px;
  }

  .about-card {
    max-width: 100%;
  }

  .message-page {
    padding: 20px;
  }
}