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

:root {
  --bg-primary: linear-gradient(135deg, #1a1a1a, #222);
  --bg-secondary: #2a2a2a;
  --bg-tertiary: #363636;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-tertiary: #f6f6f6;
  --accent-primary: #2eaadc;
  --accent-secondary: #4f6bed;
  --accent-tertiary: #6b7bde;
  --border: #404040;
  --border-hover: #505050;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.4);

  /* Utility Font Sizes */
  --font-size-sm: clamp(1.125rem, 0.5rem + 1.5vw, 1.5rem);
  --font-size-lg: clamp(1.5rem, 0.5rem + 1.5vw, 2rem);
  --font-size-xl: clamp(2rem, 0.8rem + 3vw, 3.25rem);
  --font-size-2xl: clamp(2.25rem, 1rem + 3vw, 3.5rem);

  /* Spacing  */
  --spacing-sm: clamp(0.25rem, 0.25rem + 0.5vw, 0.75rem);
  --spacing-md: clamp(1rem, 0.5rem + 1vw, 1.5rem);
  --spacing-lg: clamp(1.5rem, 0.75rem + 1.5vw, 3rem);
  --spacing-xl: clamp(2rem, 1rem + 2vw, 4rem);
  --spacing-2xl: clamp(3rem, 1.5rem + 3vw, 6rem);

  /* Fluid layout tokens */
  --border-radius: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
  --shadow: 0 clamp(0.25rem, 0.2rem + 0.25vw, 0.375rem)
    clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem) rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

body {
  background: var(--bg-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  min-height: 100vh;
  gap: 1rem;
  color: var(--text-primary);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: var(--transition);
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

header {
  text-align: center;
  margin-bottom: 2rem;
  text-shadow: var(--shadow);
}

header .logo {
  font-size: var(--font-size-2xl);
}

header h1 {
  font-size: var(--font-size-xl);
}

header .subtitle {
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.main-content {
  display: grid;
  gap: var(--spacing-xl);
  /* border: 2px solid #fff; */
}

.main-content .categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.main-content .category-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border);
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
}

.category-btn:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4);
}

.categories .active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--text-tertiary);
}

.main-content .quote-container {
  padding: var(--spacing-md) var(--spacing-sm);
  margin: var(--spacing-lg) 0;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  color: var(--text-primary);
  background: var(--bg-primary);
  width: 100%;
}

.quote-container .quote-text {
  font-size: var(--font-size-lg);
  margin-bottom: 1.5rem;
  font-weight: 400;
  position: relative;
  padding: 0 var(--spacing-lg);
}

.quote-text::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -0.5rem;
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
  opacity: 0.5;
  font-family: serif;
}

.quote-text::after {
  content: '"';
  position: absolute;
  right: 0;
  top: -0.5rem;
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
  opacity: 0.5;
  font-family: serif;
}

.quote-container .quote-author {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  /* margin-right: 300px; */
  font-weight: 500;
}

.quote-category {
  padding: 0.2rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-left: 1rem;
}

.main-content .controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.controls .movers {
  display: flex;
  justify-content: space-between;
}

.controls .btn {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  font-size: var(--font-size-lg);
  font-weight: 500;
  text-shadow: var(--shadow);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.controls .change-bg {
  display: none;
}

.movers .btn {
  border-color: var(--accent-primary);
}

.btn:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-icon {
  font-size: var(--font-size-sm);
}

.main-content .stats {
  display: flex;
  gap: 2rem;
  justify-content: center;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}
.stats .stats-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.stats .stats-item span:first-child {
  font-size: var(--font-size-lg);
}

/* Footer (mobile-friendly stacking) */
.footer {
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  width: 100%;
  box-shadow: var(--shadow);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  place-items: center;
  gap: var(--spacing-md);
  flex-direction: column;
  text-align: center;
}

.developer-info {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.dev-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: #ecf0f1;
}
.dev-title {
  color: #bdc3c7;
  font-size: var(--font-size-sm);
}

.github-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.github-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.github-icon {
  width: var(--spacing-md);
  height: var(--spacing-md);
  fill: white;
}

.footer-bottom {
  margin-top: 0.9rem;
  color: #95a5a6;
  font-size: var(--font-size-sm);
  text-align: center;
}

/* Notification Styles */

.notification {
  position: fixed;
  top: 2rem;
  right: 2rem;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  transform: translateX(400px);
  transition: transform 0.3s ease;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.notification.show {
  transform: translateX(0);
}

.notification.success {
  border-left: 4px solid #10b981;
}

.notification.error {
  border-left: 4px solid #ef4444;
}

/* Ensure text is readable in image mode */
[data-theme="image"] .quote-container {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

[data-theme="image"] .categories .category-btn {
  backdrop-filter: blur(5px);
}

[data-theme="image"] .controls .btn {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
}

/* [data-theme="image"] .stats {
  background: rgba(0, 0, 0, 0.5);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  backdrop-filter: blur(5px);
} */