/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #1e1e2e 0%, #2d2d44 100%);
  color: #ffffff;
  min-height: 100vh;
  padding: 2rem;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* Header Styles */
.header {
  text-align: center;
  margin-bottom: 3rem;
  animation: fadeInDown 0.8s ease-out;
}

.header h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text !important;
}

.header p {
  font-size: 1.2rem;
  color: #b9cded;
  opacity: 0.8;
}

.header-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 2rem;
  display: block;
  border: 4px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  transition: all 0.3s ease;
}

.header-photo:hover {
  transform: scale(1.05);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.7);
}

/* Back Button */
.back-button {
  display: inline-block;
  margin-bottom: 2rem;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: #ffffff;
  text-decoration: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.back-button:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(-5px);
}

/* Common Card Styles */
.card-base {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(10px);
  transition: all 0.4s ease;
  animation: fadeInUp 0.8s ease-out;
  animation-fill-mode: both;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.card-base::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 15px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card-base:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4);
}

.card-base:hover::before {
  opacity: 1;
}

/* Section Title */
.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  margin-top: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.3);
}

.section-title:first-of-type {
  margin-top: 0;
}

/* Description */
.description {
  line-height: 1.8;
  color: #e0e0e0;
}

.description ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 1rem;
}

.description ul:last-child {
  margin-bottom: 0;
}

.description li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
  border-left: 2px solid rgba(255, 255, 255, 0.1);
  margin-left: 0.5rem;
  transition: all 0.2s ease;
}

.description p {
  margin-bottom: 1rem;
}

.description p:last-child {
  margin-bottom: 0;
}

/* Period Badge */
.period {
  font-size: 0.95rem;
  color: #909bad;
  margin-bottom: 1.5rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  display: inline-block;
}

/* Scroll Indicator */
.scroll-indicator {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 100;
  opacity: 0.7;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.scroll-indicator:hover {
  opacity: 1;
}

.scroll-indicator.hidden {
  opacity: 0;
  pointer-events: none;
}

.scroll-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.9rem;
  color: #b9cded;
  font-weight: 500;
  letter-spacing: 0.2em;
  animation: pulse 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 30px;
  height: 50px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 25px;
  position: relative;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-right: 2px solid rgba(255, 255, 255, 0.8);
  border-bottom: 2px solid rgba(255, 255, 255, 0.8);
  transform: translateX(-50%) rotate(45deg);
  animation: scrollDown 2s ease-in-out infinite;
}

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

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

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(10px);
  }
}

@keyframes scrollDown {
  0% {
    opacity: 1;
    top: 8px;
  }
  50% {
    opacity: 0.3;
    top: 20px;
  }
  100% {
    opacity: 1;
    top: 8px;
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
  }
}

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

  .header h1 {
    font-size: 2rem;
  }

  .header-photo {
    width: 150px;
    height: 150px;
  }

  .card-base {
    padding: 1.5rem;
  }

  .scroll-indicator {
    right: 1rem;
  }

  .scroll-text {
    font-size: 0.75rem;
  }

  .scroll-arrow {
    width: 25px;
    height: 40px;
  }
}