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

body {
  min-height: 100vh;
  background: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
  font-family: 'Georgia', 'Times New Roman', serif;
  color: #e8e8e8;
  padding: 2rem;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

header {
  text-align: center;
  padding: 3rem 1rem;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 400;
  letter-spacing: 2px;
  color: #d4af37;
  text-shadow: 0 2px 20px rgba(212, 175, 55, 0.3);
}

.subtitle {
  margin-top: 1rem;
  font-size: 1.1rem;
  opacity: 0.7;
  font-style: italic;
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* Hide radio inputs */
input[type="radio"] {
  display: none;
}

.panel {
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  transition: all 0.4s ease;
}

.icon {
  font-size: 2rem;
  transition: transform 0.4s ease;
}

.panel-header h2 {
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: 1px;
}

.panel-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-inner {
  padding: 0 2rem 2rem 2rem;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s 0.1s, transform 0.3s 0.1s;
}

/* Expanded state */
input:checked + .panel .panel-content {
  max-height: 500px;
}

input:checked + .panel .content-inner {
  opacity: 1;
  transform: translateY(0);
}

input:checked + .panel .icon {
  transform: scale(1.2);
}

/* Content styling */
.content-inner h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 400;
}

.content-inner p {
  line-height: 1.8;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.content-inner blockquote {
  font-style: italic;
  font-size: 1.1rem;
  padding: 1rem 1.5rem;
  border-left: 3px solid currentColor;
  margin: 1.5rem 0;
  opacity: 0.9;
}

.content-inner .author {
  text-align: right;
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Fire theme */
.fire-panel {
  background: linear-gradient(135deg, #4a1c1c, #2d1010);
}

.fire-panel .panel-header {
  color: #ff6b4a;
}

.fire-panel .content-inner h3 {
  color: #ff9f7a;
}

.fire-panel blockquote {
  border-color: #ff6b4a;
}

input:checked + .fire-panel {
  background: linear-gradient(135deg, #5a2c2c, #3d1818);
  box-shadow: inset 0 0 30px rgba(255, 107, 74, 0.1);
}

/* Water theme */
.water-panel {
  background: linear-gradient(135deg, #1a3a4a, #0d2030);
}

.water-panel .panel-header {
  color: #4a9eff;
}

.water-panel .content-inner h3 {
  color: #7abaff;
}

.water-panel blockquote {
  border-color: #4a9eff;
}

input:checked + .water-panel {
  background: linear-gradient(135deg, #2a4a5a, #1a3040);
  box-shadow: inset 0 0 30px rgba(74, 158, 255, 0.1);
}

/* Earth theme */
.earth-panel {
  background: linear-gradient(135deg, #3a3a1a, #252510);
}

.earth-panel .panel-header {
  color: #9acd32;
}

.earth-panel .content-inner h3 {
  color: #b8e060;
}

.earth-panel blockquote {
  border-color: #9acd32;
}

input:checked + .earth-panel {
  background: linear-gradient(135deg, #4a4a2a, #353520);
  box-shadow: inset 0 0 30px rgba(154, 205, 50, 0.1);
}

/* Air theme */
.air-panel {
  background: linear-gradient(135deg, #2a3a4a, #1a2535);
}

.air-panel .panel-header {
  color: #a8d8ea;
}

.air-panel .content-inner h3 {
  color: #c8e8f5;
}

.air-panel blockquote {
  border-color: #a8d8ea;
}

input:checked + .air-panel {
  background: linear-gradient(135deg, #3a4a5a, #2a3545);
  box-shadow: inset 0 0 30px rgba(168, 216, 234, 0.1);
}

/* Spirit theme */
.spirit-panel {
  background: linear-gradient(135deg, #3a2a4a, #251a35);
}

.spirit-panel .panel-header {
  color: #e8b4f8;
}

.spirit-panel .content-inner h3 {
  color: #f0d0ff;
}

.spirit-panel blockquote {
  border-color: #e8b4f8;
}

input:checked + .spirit-panel {
  background: linear-gradient(135deg, #4a3a5a, #352a45);
  box-shadow: inset 0 0 30px rgba(232, 180, 248, 0.1);
}

/* Hover effects */
.panel:hover .panel-header {
  padding-left: 2.5rem;
}

.panel:hover .icon {
  transform: rotate(10deg);
}

footer {
  text-align: center;
  padding: 3rem 1rem;
  opacity: 0.6;
  font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  header {
    padding: 2rem 1rem;
  }

  .panel-header {
    padding: 1.2rem 1.5rem;
  }

  .content-inner {
    padding: 0 1.5rem 1.5rem 1.5rem;
  }

  .icon {
    font-size: 1.5rem;
  }

  .panel-header h2 {
    font-size: 1.1rem;
  }

  .content-inner p {
    font-size: 0.95rem;
  }

  .content-inner blockquote {
    font-size: 1rem;
    padding: 0.8rem 1rem;
  }
}

@media (max-width: 480px) {
  .panel-header {
    padding: 1rem;
  }

  .content-inner {
    padding: 0 1rem 1rem 1rem;
  }

  input:checked + .panel .panel-content {
    max-height: 600px;
  }
}