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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;
  line-height: 1.6;
  color: #e2e8f0;
  background: #2d3748;
}

@media (max-width: 768px) {
  body {
    height: 100vh;
    overflow: hidden;
  }
}

.app {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-direction: column;
  background: #2d3748;
}

@media (max-width: 768px) {
  .app {
    max-height: 100vh;
    max-height: 100svh;
    overflow: hidden;
  }
}

.main-content {
  flex-shrink: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

@media (max-width: 768px) {
  .main-content {
    height: auto; /* Changed from fixed height to auto for better keyboard handling */
    max-height: 100svh; /* Prevent overflow */
    overflow: auto; /* Allow scrolling if keyboard takes up space */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* Align content to top instead of center */
  }
}

.game-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 768px) {
  .game-container {
    padding: 1rem;
    height: auto; /* Changed from 100% to auto for better input positioning */
    /* min-height: 60vh; Ensure minimum height but allow flexibility */
    overflow: hidden;
  }
}

.sentence-display {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2rem;
  padding: 2rem;
  background: transparent;
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  word-wrap: normal;
  word-break: keep-all;
  overflow-wrap: anywhere;
  line-break: strict;
  hyphens: none;
  line-height: 1.5;
  letter-spacing: 0.05em;
  word-spacing: 0.3em;
  white-space: normal;
  color: #e2e8f0;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Hiragino Sans",
    "Yu Gothic", "Meiryo", sans-serif;
}

@media (max-width: 768px) {
  .sentence-display {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding: 1rem;
    min-height: 3rem;
    flex-shrink: 1;
  }
}

.input-container {
  width: 100%;
  max-width: 600px;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .input-container {
    margin-bottom: 0.5rem;
  }
}

.text-input {
  width: 100%;
  padding: 1rem;
  font-size: 1.2rem;
  background: #2d3748;
  color: #e2e8f0;
  border: 1px solid rgba(74, 85, 104, 0.3);
  border-radius: 16px;
  box-shadow:
    inset 4px 4px 8px rgba(20, 24, 35, 0.6),
    inset -4px -4px 8px rgba(45, 55, 72, 0.8);
  outline: none;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .text-input {
    padding: 0.75rem;
    font-size: 1.1rem;
  }
}

.text-input:focus {
  border-color: rgba(74, 85, 104, 0.3);
  box-shadow:
    inset 4px 4px 8px rgba(20, 24, 35, 0.6),
    inset -4px -4px 8px rgba(45, 55, 72, 0.8);
  outline: none;
}

.feedback {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  text-align: center;
  font-weight: 500;
}

.feedback.success {
  background: linear-gradient(135deg, #22543d 0%, #1a202c 100%);
  color: #68d391;
  border: 1px solid rgba(104, 211, 145, 0.3);
  box-shadow:
    inset 3px 3px 6px rgba(20, 24, 35, 0.6),
    inset -3px -3px 6px rgba(45, 55, 72, 0.8);
}

.feedback.error {
  background: linear-gradient(135deg, #742a2a 0%, #1a202c 100%);
  color: #fc8181;
  border: 1px solid rgba(252, 129, 129, 0.3);
  box-shadow:
    inset 3px 3px 6px rgba(20, 24, 35, 0.6),
    inset -3px -3px 6px rgba(45, 55, 72, 0.8);
}

.feedback.info {
  background: linear-gradient(135deg, #2a4365 0%, #1a202c 100%);
  color: #63b3ed;
  border: 1px solid rgba(99, 179, 237, 0.3);
  box-shadow:
    inset 3px 3px 6px rgba(20, 24, 35, 0.6),
    inset -3px -3px 6px rgba(45, 55, 72, 0.8);
}

.btn {
  background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
  color: #e2e8f0;
  border: 1px solid rgba(74, 85, 104, 0.3);
  padding: 0.75rem 1.5rem;
  border-radius: 16px;
  cursor: pointer;
  font-size: 1rem;
  box-shadow:
    4px 4px 8px rgba(20, 24, 35, 0.6),
    -4px -4px 8px rgba(74, 85, 104, 0.3);
  transition: all 0.3s ease;
}

.btn:hover {
  background: linear-gradient(135deg, #63b3ed 0%, #4299e1 100%);
  transform: translateY(-1px);
  box-shadow:
    6px 6px 12px rgba(20, 24, 35, 0.7),
    -6px -6px 12px rgba(74, 85, 104, 0.4);
}

.btn:disabled {
  background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow:
    inset 2px 2px 4px rgba(20, 24, 35, 0.6),
    inset -2px -2px 4px rgba(45, 55, 72, 0.8);
}

.header {
  background: transparent;
  padding: 1rem;
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 768px) {
  .header {
    padding: 0.75rem 1rem;
    min-height: 60px;
  }
}

.header h1 {
  color: #e2e8f0;
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(45deg, #63b3ed, #4299e1, #3182ce, #805ad5);
  background-size: 300% 300%;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 4s ease-in-out infinite;
  text-shadow: none;
  letter-spacing: -0.025em;
  position: relative;
}

@media (max-width: 768px) {
  .header h1 {
    font-size: 1.8rem;
  }
}

@keyframes gradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.header h1::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, #63b3ed, #4299e1, #3182ce, #805ad5);
  background-size: 300% 300%;
  animation: gradientShift 4s ease-in-out infinite;
  filter: blur(8px);
  opacity: 0.3;
  z-index: -1;
}

.menu-toggle {
  background: transparent;
  border: none;
  padding: 0.5rem;
  width: 44px;
  height: 44px;
  font-size: 1.5rem;
  cursor: pointer;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  opacity: 0.8;
}

.menu-toggle:hover {
  opacity: 1;
  transform: scale(1.1);
}

.footer {
  width: 100%;
  max-width: 600px;
  padding: 1rem;
  z-index: 100;
  pointer-events: none;
}

@media (max-width: 768px) {
  .footer {
    bottom: 10px;
    padding: 0.5rem;
    max-width: calc(100% - 1rem);
  }
}

.progress-bar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.progress-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.progress-label {
  min-width: 120px;
  font-weight: 500;
  color: #e2e8f0;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.progress-visual {
  flex: 1;
  height: 16px;
  background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  box-shadow:
    inset 3px 3px 6px rgba(20, 24, 35, 0.8),
    inset -3px -3px 6px rgba(45, 55, 72, 0.6);
  border: 1px solid rgba(74, 85, 104, 0.2);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #63b3ed 0%, #4299e1 50%, #3182ce 100%);
  border-radius: 16px;
  transition: width 0.3s ease;
  box-shadow:
    0 0 12px rgba(99, 179, 237, 0.5),
    inset 0 2px 4px rgba(255, 255, 255, 0.2);
}

.progress-text {
  font-size: 0.9rem;
  color: #a0aec0;
  min-width: 60px;
  text-align: right;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.side-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 400px;
  height: 100vh;
  background: #2d3748;
  box-shadow: 8px 0 16px rgba(0, 0, 0, 0.4);
  border-right: 1px solid rgba(74, 85, 104, 0.3);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 1000;
  overflow-y: auto;
}

@media (max-width: 768px) {
  .side-menu {
    width: 100vw;
    max-width: 100%;
    border-right: none;
    box-shadow: 0 0 16px rgba(0, 0, 0, 0.4);
  }
}

.side-menu.open {
  transform: translateX(0);
}

.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
}

.menu-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(
    135deg,
    rgba(26, 32, 44, 0.95) 0%,
    rgba(45, 55, 72, 0.95) 100%
  );
  backdrop-filter: blur(8px);
  color: #e2e8f0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  text-align: center;
}

.transition-character {
  font-size: 6rem;
  margin-bottom: 1rem;
  color: #63b3ed;
  text-shadow:
    0 0 20px rgba(99, 179, 237, 0.6),
    4px 4px 8px rgba(0, 0, 0, 0.4);
}

.transition-info {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
}

.success-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.success-checkmark {
  font-size: 6rem;
  color: #68d391;
  margin-bottom: 2rem;
  text-shadow:
    0 0 20px rgba(104, 211, 145, 0.6),
    4px 4px 8px rgba(0, 0, 0, 0.4);
}

/* Additional neumorphic styles for side menu hover effects */
.side-menu button:hover {
  transform: translateY(-1px);
}

.side-menu .reset-button:hover {
  background: linear-gradient(135deg, #fc8181 0%, #e53e3e 100%) !important;
  transform: translateY(-1px);
  box-shadow:
    4px 4px 8px rgba(20, 24, 35, 0.7),
    -4px -4px 8px rgba(74, 85, 104, 0.4) !important;
}