:root {
  --primary: #2563eb;
  --text: #1f2937;
  --bg: #f9fafb;
  --border: #e5e7eb;
  --secondary-bg: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-hover: rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] {
  --primary: #60a5fa;
  --text: #e5e7eb;
  --bg: #111827;
  --border: #374151;
  --secondary-bg: #1f2937;
  --shadow: rgba(255, 255, 255, 0.1);
  --shadow-hover: rgba(255, 255, 255, 0.2);
}

[data-theme="solarized"] {
  --primary: #b58900;
  --text: #586e75;
  --bg: #fdf6e3;
  --border: #93a1a1;
  --secondary-bg: #eee8d5;
  --shadow: rgba(147, 161, 161, 0.2);
  --shadow-hover: rgba(147, 161, 161, 0.3);
}

[data-theme="black"] {
  --primary: #38bdf8;
  --text: #ffffff;
  --bg: #000000;
  --border: #27272a;
  --secondary-bg: #18181b;
  --shadow: rgba(255, 255, 255, 0.1);
  --shadow-hover: rgba(255, 255, 255, 0.2);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: all 0.3s ease;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.theme-carousel {
  position: fixed;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.25rem;
  background: var(--secondary-bg);
  padding: 0.25rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  box-shadow: 0 2px 4px var(--shadow);
  z-index: 1000;
  transform: scale(0.8);
}

.theme-btn {
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 50%;
  font-size: 1.2rem;
  transition: transform 0.2s ease;
}

.theme-btn:hover {
  transform: scale(1.1);
  background: var(--bg);
}

.theme-btn.active {
  background: var(--primary);
}

.container {
  width: 100%;
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
  flex: 1;
}

@media (orientation: landscape) {
  .container {
    max-width: 33.333vw;
  }
}

@media (orientation: portrait) {
  .container {
    max-width: 66.666vw;
  }
}

h1 {
  text-align: center;
  margin: 1rem 0 2rem;
  color: var(--primary);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.input-area {
  background: var(--secondary-bg);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 6px var(--shadow);
  transform: translateY(0);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.input-area:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 8px var(--shadow-hover);
}

textarea {
  width: 100%;
  min-height: 150px;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg);
  color: var(--text);
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  resize: vertical;
  margin-bottom: 1rem;
}

textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--shadow);
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  background: var(--primary);
  color: var(--secondary-bg);
  border: none;
  padding: 0.75rem 1.25rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.9;
}

.btn:active {
  transform: translateY(0);
}

.stats {
  font-size: 0.875rem;
  color: var(--text);
  opacity: 0.8;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

footer {
  text-align: center;
  padding: 1rem;
  background: var(--secondary-bg);
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text);
  opacity: 0.8;
}

#fileInput {
  display: none;
}

@media (max-width: 640px) {
  .container {
    max-width: 100%;
    padding: 0 1rem;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}