:root {
  --primary-color: #89cff0;
  --primary-hover-color: #67b7d1;
  --accent-color: #ffdab9;
  --background-color: #f0f8ff;
  --container-bg-color: #ffffff;
  --text-color: #4a5568;
  --secondary-text-color: #718096;
  --border-color: #e2e8f0;
  --input-bg-color: #f7fafc;
  --shadow-color: rgba(74, 85, 104, 0.07);
  --focus-ring-color: rgba(137, 207, 240, 0.3);
}

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

body {
  font-family: "Noto Sans KR", sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
}

.container {
  max-width: 450px;
  width: 100%;
  background: var(--container-bg-color);
  padding: 40px;
  border-radius: 25px;
  box-shadow: 0 12px 35px var(--shadow-color);
  text-align: center;
  margin-top: 20px;
  margin-bottom: 20px;
}

.app-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 15px;
  display: block;
}

h1 {
  color: var(--primary-color);
  margin-top: 0;
  margin-bottom: 25px;
  font-size: 2rem;
  font-weight: 600;
}

input,
button {
  font-size: 1rem;
  border-radius: 12px;
}

input[type="text"] {
  width: 100%;
  padding: 14px 18px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  background-color: var(--input-bg-color);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
input[type="text"]::placeholder {
  color: #a0aec0;
}
input[type="text"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--focus-ring-color);
}

button {
  padding: 12px 25px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease,
    box-shadow 0.2s ease;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: 25px;
}

.category-selector-container {
  display: flex;
  justify-content: space-around;
  gap: 10px;
  margin-bottom: 25px;
  margin-top: 5px;
}

.category-button {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 8px;
  background-color: var(--input-bg-color);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease,
    transform 0.15s ease;
  color: var(--secondary-text-color);
  font-weight: 500;
  min-height: 80px;
}

.category-button .category-icon {
  width: 28px;
  height: 28px;
  margin-bottom: 6px;
}

.category-button:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}
.category-button.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  box-shadow: 0 4px 10px rgba(137, 207, 240, 0.25);
}

button[type="submit"] {
  background-color: var(--primary-color);
  color: white;
  width: 100%;
  margin-top: 15px;
  padding: 14px 25px;
  box-shadow: 0 4px 12px rgba(137, 207, 240, 0.3);
}

button[type="submit"]:hover {
  background-color: var(--primary-hover-color);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 16px rgba(137, 207, 240, 0.35);
}

button[type="submit"]:active {
  transform: translateY(0) scale(1);
  box-shadow: 0 2px 8px rgba(137, 207, 240, 0.25);
}

#fortune-result {
  margin-top: 30px;
  font-size: 1.1rem;
  color: var(--text-color);
  min-height: 150px;
  padding: 25px 20px;
  background-color: var(--input-bg-color);
  border-radius: 15px;
  border: 1px solid var(--border-color);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#fortune-result .fortune-date {
  margin-bottom: 12px;
  font-size: 0.9em;
  color: var(--secondary-text-color);
}
#fortune-result .fortune-date strong {
  color: var(--primary-color);
  font-weight: 600;
}
#fortune-result .fortune-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
#fortune-result .emoji {
  font-size: 4rem;
  display: block;
  line-height: 1;
}
#fortune-result .fortune-message {
  line-height: 1.6;
  text-align: center;
}
#fortune-result .fortune-intro {
  display: block;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 6px;
}

#share-btn {
  background-color: var(--accent-color);
  color: var(--text-color);
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 0.95rem;
}

#share-btn:hover {
  background-color: #ffc8a2;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

@media (max-width: 600px) {
  body {
    padding: 10px;
    align-items: flex-start;
  }
  .container {
    padding: 25px 20px;
    margin-top: 10px;
    margin-bottom: 10px;
  }
  h1 {
    font-size: 1.8rem;
  }
  input[type="text"],
  button[type="submit"] {
    font-size: 0.95rem;
    padding: 11px 14px;
  }
  #fortune-result {
    padding: 15px;
    font-size: 1rem;
    min-height: 120px;
  }
  #fortune-result .emoji {
    font-size: 3.5rem;
  }
  #share-btn {
    padding: 9px 18px;
    font-size: 0.9rem;
  }
  .category-selector-container {
    gap: 8px;
  }
  .category-button {
    padding: 10px 5px;
    min-height: 70px;
  }
  .category-button .category-icon {
    width: 24px;
    height: 24px;
  }
}