/* Base Variables */
:root {
  /* Safe Area Insets */
  --sat: env(safe-area-inset-top);
  --sar: env(safe-area-inset-right);
  --sab: env(safe-area-inset-bottom);
  --sal: env(safe-area-inset-left);

  /* Typography */
  --font-inclusive: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  --font-code: 'JetBrains Mono', monospace;
  --font-size-tiny: clamp(10px, 0.7rem, 12px);
  --font-size-xsmall: clamp(12px, 0.8rem, 14px);
  --font-size-small: clamp(14px, 0.9rem, 16px);
  --font-size-medium: clamp(16px, 1rem, 18px);
  --font-size-large: clamp(18px, 1.125rem, 20px);
  --font-size-xlarge: clamp(20px, 1.25rem, 22px);
  --font-size-xxlarge: clamp(24px, 1.5rem, 26px);
  --font-size-xxxlarge: clamp(32px, 2.3rem, 36px);
  --font-size-huge: clamp(42px, 2.625rem, 48px);
  --font-scale: 1;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --letter-spacing-tight: -0.01em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.01em;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;

  /* Layout */
  --panel-width: 300px;
  --accent-width: 35px;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 9999px;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-standard: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Dark Mode Colors (Default) */
  --color-background: #121212;
  --color-surface: #1e1e1e;
  --color-surface-elevated: #252525;
  --color-surface-hover: #2a2a2a;
  --color-text-primary: rgba(255, 255, 255, 0.9);
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-tertiary: rgba(255, 255, 255, 0.5);
  --color-text-disabled: rgba(255, 255, 255, 0.38);
  --color-divider: rgba(255, 255, 255, 0.12);
  
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  
  --color-secondary: #06b6d4;
  --color-secondary-light: #22d3ee;
  --color-secondary-dark: #0891b2;
  
  --color-tertiary: #8b5cf6;
  --color-tertiary-light: #a78bfa;
  --color-tertiary-dark: #7c3aed;
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  --color-hover: var(--color-primary-light);
  --color-active: var(--color-primary-dark);

  /* RGB values for opacity adjustments */
  --rgb-surface: 30, 30, 30;
  --rgb-primary: 99, 102, 241;
  --rgb-secondary: 6, 182, 212;
  --rgb-tertiary: 139, 92, 246;

  /* Gradient Variables */
  --gradient-border: linear-gradient(
    45deg,
    var(--color-primary) 0%,
    var(--color-secondary) 25%,
    var(--color-tertiary) 50%,
    var(--color-secondary) 75%,
    var(--color-primary) 100%
  );
  
  --gradient-border-hover: linear-gradient(
    45deg,
    var(--color-primary-light) 0%,
    var(--color-secondary-light) 25%,
    var(--color-tertiary-light) 50%,
    var(--color-secondary-light) 75%,
    var(--color-primary-light) 100%
  );
  
  --gradient-background: linear-gradient(
    135deg,
    var(--color-primary-dark) 0%,
    var(--color-tertiary-dark) 100%
  );
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

*::-webkit-scrollbar {
  display: none;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  width: 100vw;
  margin: 0;
  padding: 0;
  font-family: var(--font-inclusive);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-primary);
  overflow: auto;
  align-items: center;
  -webkit-overflow-scrolling: touch;
  font-size: var(--font-size-medium);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a {
  text-decoration: none;
  color: var(--color-primary-light);
  transition: var(--transition-standard);
  position: relative;
}

a:hover {
  color: var(--color-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button, 
input, 
select, 
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInChar {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.alt-text-display {
  margin-bottom: var(--spacing-lg);
  text-align: left;
  font-size: var(--font-size-xxlarge;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  animation: fadeIn var(--transition-standard) forwards;
}

/* Add a helper class for animated gradients */
.animated-gradient {
  background: linear-gradient(var(--color-surface), var(--color-surface)) padding-box,
              var(--gradient-border) border-box;
  border: 2px solid transparent;
  background-size: 200% 200%;
  animation: gradientRotate 4s linear infinite;
  border-radius: var(--border-radius-md);
  transition: transform var(--transition-standard), box-shadow var(--transition-standard);
}

.animated-gradient:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Ensure animations are disabled for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .animated-gradient,
  .icon-button,
  .alt-text-display,
  #ttsControl,
  .alt-text-container,
  .upload-area,
  .paste-button,
  #copyButton,
  #retryButton,
  #globalRetryButton {
    animation: none !important;
    transition: none !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Tip Jar Container */
.tip-jar-container {
  display: flex !important;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: 800px;
  margin: 1rem auto;
  /* padding: 0 1rem; */
  position: relative;
  z-index: 1;
}

/* Ensure the LemonSqueezy button is properly centered */
.lemonsqueezy-button {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* Badges Row */
.badges-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1rem auto;
  width: 100%;
  max-width: 500px;
}

/* Dropdown Selectors */
.control-selector {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  transition: all var(--transition-standard);
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-medium);
  cursor: pointer;
}

.control-selector:hover {
  border-color: var(--color-primary-light);
  background-color: var(--color-surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.control-selector:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .markdown-body {
    padding: 0.5rem;
    font-size: var(--font-size-xsmall);
  }
  .markdown-body h1 { font-size: var(--font-size-large); }
  .markdown-body h2 { font-size: var(--font-size-medium); }
  .markdown-body h3 { font-size: var(--font-size-small); }
  .markdown-body h4,
  .markdown-body h5,
  .markdown-body h6 { font-size: var(--font-size-small); }
  .markdown-body pre {
    padding: 0.5rem;
    font-size: 0.8em;
  }
  .markdown-body table th,
  .markdown-body table td {
    padding: 0.25rem 0.5rem;
  }
}

/* Override reserved footer space */
:root[data-theme="light"] body,
:root[data-theme="dark"] body {
  min-height: 100vh !important;
}

/* Override body layout */
body {
  display: block !important;
  height: auto !important;
  min-height: auto !important;
  width: 100vw;
  margin: 0;
  padding: 0;
}

/* Ensure no dropdown indicators in any browser */
select,
.control-selector,
select.control-selector {
  -webkit-appearance: none !important;
  -moz-appearance: none !important;
  appearance: none !important;
  background-image: none !important;
  background-position: unset !important;
  background-repeat: no-repeat !important;
  padding-right: var(--spacing-md) !important;
}

/* Handle IE/Edge */
select::-ms-expand,
.control-selector::-ms-expand {
  display: none !important;
}

/* Ensure after elements aren't used for indicators */
select::after,
.control-selector::after {
  display: none !important;
  content: none !important;
}