/* CSS Custom Properties for Theme Management */

:root {
  /* Dark Theme (Default) */
  --bg-primary: #0a0a0a;
  --bg-secondary: #0f0f0f;
  --bg-tertiary: #1a1a1a;
  --text-primary: #e5e5e5;
  --text-secondary: #b0b0b0;
  --text-muted: #888;
  --accent-color: #ffffff;
  --secondary-color: #3b82f6;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(255, 255, 255, 0.2);
  --shadow-color: rgba(0, 0, 0, 0.3);
  --overlay-color: rgba(0, 0, 0, 0.8);
  
  /* Interactive Elements */
  --button-bg: #ffffff;
  --button-text: #000000;
  --button-bg-hover: #e5e5e5;
  --button-secondary-bg: rgba(255, 255, 255, 0.05);
  --button-secondary-text: #e5e5e5;
  --button-secondary-bg-hover: rgba(255, 255, 255, 0.08);
  
  /* Form Elements */
  --input-bg: rgba(255, 255, 255, 0.05);
  --input-border: rgba(255, 255, 255, 0.1);
  --input-border-focus: rgba(255, 255, 255, 0.3);
  --input-text: #e5e5e5;
  --input-placeholder: #888;
  
  /* Status Colors */
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;
  
  /* Component Specific */
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-hover-bg: rgba(255, 255, 255, 0.08);
  --tag-bg: rgba(255, 255, 255, 0.1);
  --tag-text: #e5e5e5;
  
  /* Animation Properties */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a1a;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --accent-color: #000000;
  --secondary-color: #3b82f6;
  --border-color: rgba(0, 0, 0, 0.1);
  --border-color-hover: rgba(0, 0, 0, 0.2);
  --shadow-color: rgba(0, 0, 0, 0.1);
  --overlay-color: rgba(255, 255, 255, 0.9);
  
  /* Interactive Elements */
  --button-bg: #000000;
  --button-text: #ffffff;
  --button-bg-hover: #333333;
  --button-secondary-bg: rgba(0, 0, 0, 0.05);
  --button-secondary-text: #1a1a1a;
  --button-secondary-bg-hover: rgba(0, 0, 0, 0.08);
  
  /* Form Elements */
  --input-bg: rgba(0, 0, 0, 0.05);
  --input-border: rgba(0, 0, 0, 0.1);
  --input-border-focus: rgba(0, 0, 0, 0.3);
  --input-text: #1a1a1a;
  --input-placeholder: #6c757d;
  
  /* Component Specific */
  --card-bg: rgba(0, 0, 0, 0.02);
  --card-border: rgba(0, 0, 0, 0.1);
  --card-hover-bg: rgba(0, 0, 0, 0.05);
  --tag-bg: rgba(0, 0, 0, 0.1);
  --tag-text: #1a1a1a;
}

/* Theme Transition Animation */
* {
  transition: background-color var(--transition-normal), 
              color var(--transition-normal), 
              border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              fill var(--transition-normal),
              stroke var(--transition-normal);
}

/* Enhanced theme transition for smooth switching */
.theme-transitioning * {
  transition: background-color var(--transition-fast), 
              color var(--transition-fast), 
              border-color var(--transition-fast),
              box-shadow var(--transition-fast),
              fill var(--transition-fast),
              stroke var(--transition-fast) !important;
}

/* Prevent transition on page load */
.preload * {
  transition: none !important;
}

/* Ensure all new sections use theme variables */
.projects {
  background: var(--bg-primary);
}

.blog {
  background: var(--bg-secondary);
}

.skills-timeline-section {
  background: var(--bg-primary);
}

/* Theme Toggle Button Styles */
.theme-toggle {
  background: var(--button-secondary-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  background: var(--button-secondary-bg-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-1px);
}

.theme-toggle:active {
  transform: translateY(0);
}

/* Theme toggle button states */
.theme-toggle--dark {
  /* Additional styles for dark theme state */
}

.theme-toggle--light {
  /* Additional styles for light theme state */
}

/* Enhanced theme transition animation */
.theme-toggle:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.theme-toggle:focus:not(:focus-visible) {
  outline: none;
}

/* Update existing styles to use custom properties */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
}

header {
  background: rgba(var(--bg-primary-rgb, 10, 10, 10), 0.8);
  border-bottom: 1px solid var(--border-color);
}

.logo {
  color: var(--accent-color);
}

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

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

.hero-content h1 {
  color: var(--accent-color);
}

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

.hero-content .description {
  color: var(--text-secondary);
}

.cta-button {
  background: var(--button-bg);
  color: var(--button-text);
}

.cta-button:hover {
  background: var(--button-bg-hover);
}

.about {
  background: var(--bg-secondary);
}

.section-title {
  color: var(--accent-color);
}

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

.skill-item {
  background: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
}

.skill-item:hover {
  background: var(--card-hover-bg);
  border-color: var(--border-color-hover);
}

.contact {
  background: var(--bg-primary);
}

.contact-info h3,
.contact-form h3 {
  color: var(--accent-color);
}

.contact-item {
  color: var(--text-secondary);
}

.contact-item .icon {
  color: var(--accent-color);
}

.form-group input,
.form-group textarea {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--input-placeholder);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--input-border-focus);
}

.submit-btn {
  background: var(--button-bg);
  color: var(--button-text);
}

.submit-btn:hover {
  background: var(--button-bg-hover);
}

footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}