/* ===========================
   PawVision Jekyll Theme Styles
   =========================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Color Palette */
  --primary-color: #FF914D;
  --primary-light: #FFB366;
  --primary-dark: #E8732F;
  --secondary-color: #3EC1B9;
  --secondary-light: #5DCCC5;
  --secondary-dark: #2BA8A0;
  --accent-color: #6C63FF;
  
  /* Neutral Colors */
  --text-primary: #2E2E2E;
  --text-secondary: #666666;
  --text-muted: #999999;
  --background-primary: #f8f9fa;
  --background-secondary: #ffffff;
  --background-glass: rgba(255, 255, 255, 0.95);
  --border-color: #e1e5e9;
  --border-primary: rgba(255, 145, 77, 0.2);
  
  /* Status Colors */
  --success-color: #28a745;
  --warning-color: #ffc107;
  --error-color: #dc3545;
  --info-color: #17a2b8;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 15px;
  
  /* Typography */
  --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Inconsolata', 'Roboto Mono', 'Source Code Pro', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(255, 145, 77, 0.15);
  --shadow-lg: 0 8px 32px rgba(255, 145, 77, 0.2);
  --shadow-xl: 0 12px 40px rgba(255, 145, 77, 0.25);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --container-max-width: 1200px;
  --content-max-width: 1100px;
}

/* Hide duplicate h1 from Jekyll content */
main h1:first-of-type {
  display: none !important;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  background: var(--background-primary);
  color: var(--text-primary);
  margin: 0;
  padding: var(--spacing-lg);
  min-height: 100vh;
  line-height: 1.7;
  font-size: var(--font-size-base);
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  body {
    padding: var(--spacing-sm);
  }
}

/* ===========================
   Header Styles
   =========================== */

.header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  background: var(--background-glass);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-primary);
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-xl);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.header-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex: 1;
  justify-content: center;
  min-width: 0;
}

.header-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.header-link {
  color: var(--primary-color);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: rgba(255, 145, 77, 0.1);
  border-radius: 25px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: var(--transition-normal);
  border: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
}

.header-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.header-link:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.header-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.logo {
  max-width: 80px;
  height: auto;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
  flex-shrink: 0;
}

h1 {
  color: var(--text-primary);
  margin: 0;
  font-size: var(--font-size-3xl);
  font-weight: 300;
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Header Responsive Design */
@media (max-width: 768px) {
  .header {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .header-main {
    flex-direction: column;
    text-align: center;
  }
  
  .header-links {
    justify-content: center;
  }
  
  h1 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  .header-link {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
  }
  
  h1 {
    font-size: var(--font-size-xl);
    letter-spacing: 0.5px;
  }
}

/* ===========================
   Navigation Styles
   =========================== */

.menu {
  max-width: var(--content-max-width);
  margin: 0 auto var(--spacing-lg) auto;
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  align-items: center;
}

@media (max-width: 768px) {
  .menu {
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .menu {
    gap: var(--spacing-sm);
  }
}

/* ===========================
   Main Content Styles
   =========================== */

.section {
  background: var(--background-glass);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-xl);
}

.section h2 {
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-2xl);
  font-weight: 500;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: var(--spacing-sm);
  line-height: 1.3;
}

.section h3 {
  color: var(--text-primary);
  margin: var(--spacing-xl) 0 var(--spacing-lg) 0;
  font-size: var(--font-size-xl);
  font-weight: 500;
}

.section h4 {
  color: var(--text-primary);
  margin: var(--spacing-lg) 0 var(--spacing-md) 0;
  font-size: var(--font-size-lg);
  font-weight: 500;
}

.section p {
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

/* Responsive Section Styles */
@media (max-width: 768px) {
  .section {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
  }
  
  .section h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
}

/* ===========================
   Button Styles
   =========================== */

button, .btn {
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-sm);
  border: none;
  border-radius: var(--border-radius-md);
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  font-weight: 500;
  font-size: var(--font-size-base);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
  line-height: 1;
}

button:hover, .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
}

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

button:focus, .btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

button:disabled, .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Button Variants */
.btn-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--secondary-light), var(--secondary-color));
}

.btn-danger, .danger {
  background: linear-gradient(135deg, var(--error-color), #c82333) !important;
  box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3) !important;
}

.btn-danger:hover, .danger:hover {
  background: linear-gradient(135deg, #e14756, var(--error-color)) !important;
  box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4) !important;
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color), #1e7e34);
}

.btn-success:hover {
  background: linear-gradient(135deg, #34ce57, var(--success-color));
}

/* Control Button Grid */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.control-button {
  width: 100%;
  padding: var(--spacing-xl) var(--spacing-lg) !important;
  font-size: var(--font-size-lg) !important;
  margin: 0 !important;
}

/* Responsive Button Styles */
@media (max-width: 768px) {
  .controls-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .control-button {
    padding: var(--spacing-lg) var(--spacing-md) !important;
    font-size: var(--font-size-base) !important;
  }
}

/* ===========================
   Form Styles
   =========================== */

input, select, textarea {
  margin: var(--spacing-sm) 0;
  padding: var(--spacing-md);
  width: 100%;
  box-sizing: border-box;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family-primary);
  transition: var(--transition-normal);
  background: var(--background-secondary);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 145, 77, 0.1);
}

input:disabled, select:disabled, textarea:disabled {
  background-color: #f5f5f5;
  color: var(--text-muted);
  border-color: #ddd;
  cursor: not-allowed;
  opacity: 0.6;
}

input[type="checkbox"], input[type="radio"] {
  width: auto;
  margin-right: var(--spacing-sm);
  transform: scale(1.2);
}

label {
  display: block;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--font-size-base);
}

label:has(input:disabled), label.disabled {
  color: var(--text-muted);
  opacity: 0.6;
}

.form-inline {
  display: inline;
}

/* Form Groups and Layouts */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: flex;
  gap: var(--spacing-md);
  align-items: end;
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ===========================
   Typography and Content Styles
   =========================== */

/* Lists */
ul, ol {
  margin: var(--spacing-lg) 0 var(--spacing-lg) var(--spacing-xl);
  padding: 0;
}

ul ul, ol ol, ul ol, ol ul {
  margin: var(--spacing-sm) 0;
}

li {
  margin: var(--spacing-sm) 0;
  line-height: 1.7;
  color: var(--text-primary);
}

li::marker {
  color: var(--primary-color);
}

/* Code and Pre-formatted Text */
pre, code {
  font-family: var(--font-family-mono), 'Monaco', 'Courier New', monospace;
  font-size: var(--font-size-sm, 0.875rem);
}

code {
  background: rgba(255, 145, 77, 0.15) !important;
  color: var(--text-primary, #2E2E2E);
  padding: var(--spacing-xs, 0.25rem) var(--spacing-sm, 0.5rem);
  border-radius: var(--border-radius-sm, 4px);
  font-weight: 500;
}

pre {
  background: rgba(255, 145, 77, 0.15) !important;
  color: var(--text-primary, #2E2E2E) !important;
  border-radius: var(--border-radius-md, 8px);
  padding: var(--spacing-lg, 1.5rem) !important;
  margin: var(--spacing-lg, 1.5rem) 0;
  overflow-x: auto;
  line-height: 1.5;
  border: 1px solid rgba(255, 145, 77, 0.3);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  width: 100%;
  box-sizing: border-box;
  display: block;
}

pre code {
  background: transparent !important;
  padding: 0 !important;
  color: inherit !important;
  border-radius: 0;
  font-weight: 400;
  display: block;
  width: 100%;
}

/* Syntax highlighting improvements */
.highlight {
  margin: var(--spacing-lg, 1.5rem) 0;
  border-radius: var(--border-radius-md, 8px);
  overflow: hidden;
  width: 100%;
  background: rgba(255, 145, 77, 0.15) !important;
  border: 1px solid rgba(255, 145, 77, 0.3);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.highlight pre {
  margin: 0 !important;
  border-radius: 0;
  border: none;
  width: 100%;
  background: transparent !important;
  padding: var(--spacing-lg, 1.5rem) !important;
}

/* Ensure all code blocks have single background */
.highlight .highlight,
div[class*="language-"] {
  background: transparent !important;
  width: 100%;
  display: block;
}

div[class*="language-"] pre {
  background: rgba(255, 145, 77, 0.15) !important;
  border: 1px solid rgba(255, 145, 77, 0.3);
  border-radius: var(--border-radius-md, 8px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Rouge syntax highlighter specific */
.highlight .c,
.highlight .c1,
.highlight .cm,
.highlight .cp,
.highlight .cs {
  color: #6c757d;
}

.highlight .k,
.highlight .kc,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt {
  color: #007bff;
}

.highlight .s,
.highlight .s1,
.highlight .s2,
.highlight .sb,
.highlight .sc,
.highlight .sd,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sx {
  color: #28a745;
}

/* Hide Jekyll frontmatter YAML blocks */
.language-yaml .highlight,
.highlight .language-yaml {
  display: none !important;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background: var(--background-secondary);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: rgba(255, 145, 77, 0.1);
  font-weight: 600;
  color: var(--text-primary);
}

tr:hover {
  background: rgba(255, 145, 77, 0.05);
}

/* Links */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

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

/* Blockquotes */
blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  border-left: 4px solid var(--primary-color);
  background: rgba(255, 145, 77, 0.05);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  color: var(--text-secondary);
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Horizontal Rules */
hr {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  margin: var(--spacing-xxl) 0;
}

/* ===========================
   Component Styles
   =========================== */

/* Schedule Items */
.schedule-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin: var(--spacing-sm) 0;
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-primary);
}

.schedule-item input[type="time"] {
  margin: 0;
  flex: 1;
  max-width: 150px;
}

/* Video Items */
.video-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-sm) 0;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-primary);
}

.video-item .video-info {
  flex: 1;
  min-width: 0;
}

.video-item .video-info h4 {
  margin: 0 0 var(--spacing-xs) 0;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-item .video-info p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.video-item .video-actions {
  flex-shrink: 0;
  display: flex;
  gap: var(--spacing-sm);
}

@media (max-width: 768px) {
  .video-item {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }
  
  .video-item .video-actions {
    justify-content: center;
  }
}

/* Tabs */
.tabs {
  display: flex;
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-primary);
  border-bottom: none;
}

.tab {
  flex: 1;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: rgba(255, 255, 255, 0.7);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition-normal);
  border-bottom: 3px solid transparent;
  min-width: 0;
  position: relative;
}

.tab.active {
  background: rgba(255, 145, 77, 0.2);
  border-bottom-color: var(--primary-color);
  color: var(--primary-color);
}

.tab-content {
  display: none;
  background: var(--background-glass);
  padding: var(--spacing-xl);
  border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-primary);
  border-top: none;
  margin-bottom: var(--spacing-xl);
}

.tab-content.active {
  display: block;
}

.tab-content h2 {
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-2xl);
  font-weight: 500;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: var(--spacing-sm);
}

/* Responsive Tab Styles */
@media (max-width: 768px) {
  .tab {
    padding: var(--spacing-md) var(--spacing-sm);
    font-size: var(--font-size-sm);
    text-align: center;
  }
  
  .tab-content {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
  }
  
  .tab-content h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .tab {
    padding: var(--spacing-sm) var(--spacing-xs);
    font-size: var(--font-size-xs);
  }
  
  .tab-content {
    padding: var(--spacing-md);
  }
}

/* ===========================
   Statistics and Cards
   =========================== */

.stat-card {
  background: var(--background-glass);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Settings Grid */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xxl);
}

.settings-card {
  background: var(--background-glass);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-primary);
}

.settings-card h3 {
  color: var(--text-primary);
  margin: 0 0 var(--spacing-lg) 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: var(--spacing-sm);
}

.settings-card label {
  display: block;
  margin: var(--spacing-lg) 0 var(--spacing-xs) 0;
  color: var(--text-primary);
  font-weight: 500;
}

.settings-card input {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  background: var(--background-secondary);
  transition: var(--transition-normal);
}

.settings-card input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 145, 77, 0.1);
}

.settings-card input[type="checkbox"] {
  width: auto;
  margin-right: var(--spacing-sm);
  transform: scale(1.2);
}

.settings-card small {
  display: block;
  margin-top: var(--spacing-xs);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  line-height: 1.4;
}

/* Activity Items */
.activity-item {
  background: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-xs) 0;
  border-radius: var(--border-radius-md);
  border-left: 4px solid var(--primary-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#recent-activity {
  max-height: 300px;
  overflow-y: auto;
  border-radius: var(--border-radius-md);
}

/* Responsive Grid Layouts */
@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .settings-card {
    padding: var(--spacing-lg);
  }
  
  .stat-number {
    font-size: var(--font-size-3xl);
  }
}

@media (max-width: 480px) {
  .settings-card {
    padding: var(--spacing-md);
  }
  
  .stat-number {
    font-size: var(--font-size-2xl);
  }
}

/* ===========================
   Footer Styles
   =========================== */

.footer {
  margin-top: var(--spacing-xxl);
  padding: var(--spacing-lg);
  background: transparent;
  text-align: center;
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
  margin-top: var(--spacing-xxl);
}

.footer-content p {
  margin: var(--spacing-xs) 0;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.footer-content p:first-child {
  font-weight: 400;
  color: var(--text-secondary);
}

.footer-content a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
}

.footer-content a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

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

/* ===========================
   Tooltip Styles
   =========================== */

.tooltip {
  position: relative;
  display: inline-block;
  margin-left: var(--spacing-xs);
  cursor: help;
}

.tooltip i {
  font-style: normal;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 18px;
  height: 18px;
  text-align: center;
  line-height: 16px;
  display: inline-block;
  background: var(--background-secondary);
  transition: var(--transition-fast);
}

.tooltip:hover i {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 280px;
  background: var(--text-primary);
  color: white;
  text-align: left;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  position: absolute;
  z-index: 1000;
  bottom: 150%;
  left: 50%;
  margin-left: -140px;
  opacity: 0;
  transition: var(--transition-normal);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  box-shadow: var(--shadow-lg);
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -6px;
  border-width: 6px;
  border-style: solid;
  border-color: var(--text-primary) transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

/* ===========================
   Utility Classes
   =========================== */

/* Status Messages */
.status-message {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin: var(--spacing-lg) 0;
  border: 1px solid;
  display: none;
}

.status-success {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
  border-color: rgba(40, 167, 69, 0.3);
}

.status-error {
  background: rgba(220, 53, 69, 0.1);
  color: var(--error-color);
  border-color: rgba(220, 53, 69, 0.3);
}

.status-warning {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
  border-color: rgba(255, 193, 7, 0.3);
}

.status-info {
  background: rgba(23, 162, 184, 0.1);
  color: var(--info-color);
  border-color: rgba(23, 162, 184, 0.3);
}

/* Text Utilities */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--text-muted);
}

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

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Display Utilities */
.d-none {
  display: none;
}

.d-block {
  display: block;
}

.d-flex {
  display: flex;
}

.d-grid {
  display: grid;
}

/* Responsive Utilities */
@media (max-width: 768px) {
  .footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
  }
  
  .footer-content p {
    font-size: var(--font-size-xs);
  }
  
  .tooltip .tooltiptext {
    width: 220px;
    margin-left: -110px;
    font-size: var(--font-size-xs);
  }
}

/* ===========================
   Print Styles
   =========================== */

@media print {
  body {
    background: white;
    color: black;
    padding: 0;
  }
  
  .header,
  .footer,
  .menu,
  button,
  .btn {
    display: none;
  }
  
  .section {
    box-shadow: none;
    border: 1px solid #ccc;
    background: white;
    page-break-inside: avoid;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
  
  pre {
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
}

/* ===========================
   Accessibility Improvements
   =========================== */

/* Focus indicators */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===========================
   Dark Mode Support
   =========================== */

@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    --background-primary: #121212;
    --background-secondary: #1e1e1e;
    --background-glass: rgba(30, 30, 30, 0.95);
    --border-color: #343a40;
    --border-primary: rgba(255, 145, 77, 0.3);
  }
  
  .header {
    background: rgba(30, 30, 30, 0.95);
  }
  
  .section {
    background: rgba(30, 30, 30, 0.95);
  }
  
  pre {
    background: rgba(255, 145, 77, 0.3) !important;
    border-color: rgba(255, 145, 77, 0.4);
  }
  
  .highlight {
    background: transparent !important;
  }
  
  .highlight pre {
    background: rgba(255, 145, 77, 0.3) !important;
  }
  
  code {
    background: rgba(255, 145, 77, 0.3);
  }
  
  input, select, textarea {
    background: #2d2d2d;
    border-color: #404040;
    color: var(--text-primary);
  }
  
  input:focus, select:focus, textarea:focus {
    border-color: var(--primary-color);
    background: #363636;
  }
  
  table {
    background: #2d2d2d;
  }
  
  th {
    background: rgba(255, 145, 77, 0.2);
  }
  
  tr:hover {
    background: rgba(255, 145, 77, 0.1);
  }
  
  .activity-item {
    background: rgba(30, 30, 30, 0.8);
  }
  
  .schedule-item, .video-item {
    background: rgba(30, 30, 30, 0.8);
  }
  
  .stat-card, .settings-card {
    background: rgba(30, 30, 30, 0.95);
  }
  
  .tab {
    background: rgba(30, 30, 30, 0.7);
  }
  
  .tab.active {
    background: rgba(255, 145, 77, 0.2);
  }
  
  .tab-content {
    background: rgba(30, 30, 30, 0.95);
  }
}

/* Manual dark mode toggle class (optional) */
body.dark-mode {
  --text-primary: #e9ecef;
  --text-secondary: #adb5bd;
  --text-muted: #6c757d;
  --background-primary: #121212;
  --background-secondary: #1e1e1e;
  --background-glass: rgba(30, 30, 30, 0.95);
  --border-color: #343a40;
  --border-primary: rgba(255, 145, 77, 0.3);
}

/* ===========================
   Animation Enhancements
   =========================== */

/* Subtle entrance animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Apply entrance animations */
.section {
  animation: fadeInUp 0.6s ease-out;
}

.header {
  animation: fadeIn 0.8s ease-out;
}

.menu {
  animation: fadeIn 1s ease-out;
}

/* Stagger animation for multiple elements */
.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }

/* Button ripple effect */
@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

button, .btn {
  position: relative;
  overflow: hidden;
}

button:active::after, .btn:active::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1) translate(-50%, -50%);
  transform-origin: 50% 50%;
  animation: ripple 0.6s ease-out;
}

/* Skip link styling */
.skip-link {
  position: absolute !important;
  top: -40px !important;
  left: 6px !important;
  background: var(--primary-color) !important;
  color: white !important;
  padding: 8px 12px !important;
  text-decoration: none !important;
  border-radius: var(--border-radius-sm) !important;
  z-index: 1000 !important;
  transition: top var(--transition-normal) !important;
  font-weight: 500 !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.skip-link:focus {
  top: 6px !important;
  opacity: 1 !important;
  pointer-events: auto !important;
}

/* Keyboard navigation styles */
body.keyboard-navigation *:focus {
  outline: 2px solid var(--primary-color) !important;
  outline-offset: 2px !important;
}

/* Loading states */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===========================
   Performance Optimizations
   =========================== */

/* GPU acceleration for animated elements */
.section,
.header,
.button,
.btn,
.tab,
.stat-card,
.settings-card {
  will-change: transform;
  transform: translateZ(0);
}

/* Optimize background attachments */
.header,
.section {
  background-attachment: local;
}

/* ===========================
   Browser Compatibility
   =========================== */

/* Firefox specific fixes */
@-moz-document url-prefix() {
  .header-links {
    gap: var(--spacing-sm);
  }
}

/* Safari specific fixes */
@supports (-webkit-appearance: none) {
  input[type="time"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
  }
  
  @media (prefers-color-scheme: dark) {
    input[type="time"]::-webkit-calendar-picker-indicator {
      filter: invert(0);
    }
  }
}

/* Edge specific fixes */
@supports (-ms-ime-align: auto) {
  .header-content {
    display: -ms-flexbox;
    -ms-flex-align: center;
    -ms-flex-pack: justify;
  }
}