@import url('https://fonts.googleapis.com/css2?family=BIZ+UDPGothic:wght@400;700&family=Noto+Sans+JP:wght@600&display=swap');

:root {
  --font-sans: "BIZ UDPGothic", "Noto Sans JP", "Inter", ui-sans-serif, system-ui, sans-serif;
  --color-pink: #E91E63;
  --color-blue: #007BFF;
  --color-purple: #8e2cef;
  --transition: 0.2s ease-in-out;
}

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

body {
  font-family: var(--font-sans);
  background-color: white;
  color: #333;
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0;
}

@media (min-width: 768px) {
  .page-wrapper {
    padding: 0;
  }
}

.content-container {
  width: 100%;
  max-width: 1200px;
  margin: 15vh auto 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem 1rem;
}

@media (min-width: 768px) {
  .content-container {
    width: 90%;
    gap: 3rem;
    padding: 2rem 1rem;
  }
}

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

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

/* Common Card Styles */
.card-pink, .card-blue, .card-purple {
  border: 3px solid transparent;
  border-radius: 0.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition);
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Pink Card */
.card-pink {
  width: 100%;
  max-width: 922px;
  height: auto;
  min-height: 120px;
  border-color: var(--color-pink);
  border-width: 4px;
  padding: 2rem 1rem;
  border-radius: 8px;
}

@media (min-width: 768px) {
  .card-pink {
    height: 200px;
    padding: 3rem;
  }
}

.card-pink:hover {
  background-color: var(--color-pink);
}

.card-pink:hover .card-pink-title {
  color: white;
}

.card-pink-title {
  color: var(--color-pink);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

@media (min-width: 768px) {
  .card-pink-title {
    font-size: 2.25rem;
  }
}

/* Blue Grid */
.grid-container {
  width: 100%;
  max-width: 1200px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1rem 0;
}

@media (min-width: 640px) {
  .grid-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .grid-container {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.25rem;
  }
}

.card-blue {
  position: relative;
  background-color: white;
  border-color: var(--color-blue);
  border-width: 5px;
  border-radius: 4px;
  padding: 1.5rem 1rem;
  flex-direction: column;
  height: auto;
  min-height: 160px;
}

@media (min-width: 768px) {
  .card-blue {
    padding: 2rem;
    height: 200px;
  }
}

.card-blue:hover {
  background-color: var(--color-blue);
}

.card-blue:hover .card-blue-label,
.card-blue:hover .card-blue-title {
  color: white;
}

.card-blue:hover .card-blue-corner-tl,
.card-blue:hover .card-blue-corner-br {
  border-color: white;
}

.card-blue-corner-tl, .card-blue-corner-br {
  position: absolute;
  width: 1.5rem;
  height: 1.5rem;
  transition: border-color var(--transition);
}

.card-blue-corner-tl {
  top: 0.5rem;
  left: 0.5rem;
  border-top: 4px solid var(--color-blue);
  border-left: 4px solid var(--color-blue);
}

.card-blue-corner-br {
  bottom: 0.5rem;
  right: 0.5rem;
  border-bottom: 4px solid var(--color-blue);
  border-right: 4px solid var(--color-blue);
}

.card-blue-label {
  color: var(--color-blue);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}

@media (min-width: 768px) {
  .card-blue-label {
    font-size: 1.125rem;
    margin-bottom: 0.8rem;
  }
}

.card-blue-title {
  color: var(--color-blue);
  font-size: 1.5rem;
  font-weight: 600;
  transition: color var(--transition);
}

@media (min-width: 768px) {
  .card-blue-title {
    font-size: 2.1rem;
  }
}

/* Purple Card */
.card-purple {
  height: auto;
  min-height: 120px;
  width: 100%;
  max-width: 922px;
  background-color: var(--color-purple);
  border-color: var(--color-purple);
  border-radius: 8px;
  border-width: 5px;
  padding: 2rem 1rem;
}

@media (min-width: 768px) {
  .card-purple {
    height: 200px;
    padding: 3rem;
  }
}

.card-purple:hover {
  background-color: white;
}

.card-purple:hover .card-purple-title {
  color: var(--color-purple);
}

.card-purple-title {
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

@media (min-width: 768px) {
  .card-purple-title {
    font-size: 2.25rem;
  }
}