:root {
  --bg-color: #202124;
  --panel-bg: #2d2f31;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --border-color: #5f6368;
  --accent-color: #8ab4f8;
  --btn-hover: rgba(255, 255, 255, 0.04);
  --btn-active: rgba(255, 255, 255, 0.1);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --font-family: 'Inter', -apple-system, system-ui, sans-serif;
  --transition-fast: 0.15s ease-in-out;
  --border-radius-lg: 12px;
  --border-radius-md: 8px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.navbar {
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.logo h1 {
  font-size: 22px;
  font-weight: 500;
  color: var(--text-primary);
}

.greeting {
  font-size: 14px;
  color: var(--accent-color);
  font-weight: 600;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  margin-left: 20px;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.translator-container {
  flex: 1;
  padding: 40px 24px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  position: relative;
}

.vibe-selector {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background-color: var(--panel-bg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  width: fit-content;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.vibe-selector.hidden {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  pointer-events: none;
}

.vibe-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.vibe-options {
  display: flex;
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  padding: 4px;
  border-radius: 6px;
}

.vibe-radio {
  cursor: pointer;
}

.vibe-radio input {
  display: none;
}

.vibe-btn {
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.vibe-radio input:checked + .vibe-btn {
  background-color: var(--bg-color);
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.translator-panels {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  position: relative;
}

.panel {
  flex: 1;
  background-color: var(--panel-bg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  min-height: 300px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

.custom-select {
  position: relative;
  display: inline-flex;
  align-items: center;
}

select {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--accent-color);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 32px 8px 12px;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color var(--transition-fast);
}

select:hover {
  background-color: var(--btn-hover);
}

select:focus {
  outline: none;
  background-color: var(--btn-active);
}

select option {
  background-color: var(--panel-bg);
  color: var(--text-primary);
}

.select-icon {
  position: absolute;
  right: 8px;
  color: var(--accent-color);
  pointer-events: none;
  font-size: 20px;
}

.panel-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px;
}

textarea {
  flex: 1;
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 24px;
  line-height: 1.4;
  resize: none;
  outline: none;
  padding: 0;
  min-height: 150px;
}

textarea::placeholder {
  color: var(--text-secondary);
}

/* Scrollbar styling */
textarea::-webkit-scrollbar {
  width: 8px;
}
textarea::-webkit-scrollbar-track {
  background: transparent;
}
textarea::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
textarea::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.target-panel textarea {
  color: var(--text-primary);
}

.panel-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}

.target-footer {
  justify-content: flex-start;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--btn-hover);
  color: var(--text-primary);
}

.swap-container {
  padding-top: 12px;
}

.swap-btn {
  color: var(--text-secondary);
}

.swap-btn:hover {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
}

.char-count {
  font-size: 12px;
  color: var(--text-secondary);
}

.translate-action-btn {
  background-color: var(--accent-color);
  color: #202124;
  border: none;
  padding: 10px 20px;
  border-radius: var(--border-radius-md);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

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

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

.loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(32, 33, 36, 0.9);
  padding: 12px 24px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-primary);
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
  z-index: 10;
}

.error {
  margin-top: 16px;
  color: #f28b82;
  font-size: 14px;
  text-align: center;
  padding: 12px;
  background-color: rgba(242, 139, 130, 0.1);
  border-radius: var(--border-radius-md);
}

.hidden {
  display: none !important;
}

@media (max-width: 768px) {
  .translator-panels {
    flex-direction: column;
  }
  
  .swap-container {
    align-self: center;
    padding: 8px 0;
    transform: rotate(90deg);
  }
  
  textarea {
    font-size: 20px;
    min-height: 120px;
  }
}

/* Footer & Extras */
.site-footer {
  text-align: center;
  padding: 24px 16px;
  margin-top: auto;
  font-size: 14px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-color);
}

.github-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 500;
}

.github-link:hover {
  text-decoration: underline;
}

.floating-github {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 50px;
  height: 50px;
  background-color: var(--text-primary);
  color: var(--bg-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  z-index: 1000;
}

.floating-github svg {
  width: 28px;
  height: 28px;
}

.floating-github:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 6px 16px rgba(0,0,0,0.6);
}