/* General Setup */
:root {
  --primary-text-color: #ffffff;
  --secondary-text-color: #d1d1d1;
  --accent-color: #6a82fb;
  --accent-glow: rgba(106, 130, 251, 0.6);
  --container-bg: rgba(20, 20, 30, 0.5);
  --font-main: 'Nanum Myeongjo', serif;
}

body {
  margin: 0;
  font-family: var(--font-main);
  background-color: #1a1a2e;
  color: var(--primary-text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  text-align: center;
  overflow: hidden;
  position: relative;
}

/* Background with Gradient and Noise Texture */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at top left, #4a2a6c, transparent 40%),
              radial-gradient(circle at bottom right, #0e385f, transparent 40%),
              #16223e;
  z-index: -2;
}

body::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('https://www.transparenttextures.com/patterns/subtle-noise.png');
  opacity: 0.05;
  z-index: -1;
}

#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  width: 100%;
  max-width: 800px;
}

/* Language Selector Styling */
.lang-selector {
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  background: var(--container-bg);
  padding: 0.5rem;
  border-radius: 50px;
}

.lang-btn {
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  border: 1px solid transparent;
  background-color: transparent;
  color: var(--secondary-text-color);
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-btn.active {
  color: var(--primary-text-color);
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-glow);
}

.lang-btn:not(.active):hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--primary-text-color);
}

/* Quote Container Styling */
.quote-container {
  background: var(--container-bg);
  padding: 3rem 4rem;
  border-radius: 15px;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2), 
              0 6px 6px rgba(0,0,0,0.25),
              0 0 100px -20px var(--accent-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.quote-container:hover {
    transform: translateY(-5px);
}

.quote {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 1.5rem 0;
}

.author {
  font-size: 1.2rem;
  font-style: italic;
  font-weight: 400;
  color: var(--secondary-text-color);
  margin: 0;
}

/* Button Styling */
#new-quote-btn {
  font-family: var(--font-main);
  font-size: 1.2rem;
  font-weight: 700;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  border: none;
  background-color: var(--accent-color);
  color: var(--primary-text-color);
  cursor: pointer;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

#new-quote-btn:hover {
  background-color: #7a92ff;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

#new-quote-btn:active {
  transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .quote-container {
    padding: 2rem 2.5rem;
  }
  .quote {
    font-size: 2rem;
  }
  .author {
    font-size: 1rem;
  }
  #new-quote-btn {
    padding: 0.8rem 2rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  #app {
    padding: 1rem;
  }
  .quote-container {
    padding: 1.5rem;
  }
  .quote {
    font-size: 1.5rem;
  }
}