/* CSS Custom Properties and Variables for Bug Tracker */

:root {
    /* Color System */
    --color-primary: #4299e1;
    --color-primary-hover: #3182ce;
    --color-success: #48bb78;
    --color-warning: #ed8936;
    --color-error: #f56565;
    --color-info: #4299e1;
    
    /* Neutral Colors */
    --color-gray-100: #f7fafc;
    --color-gray-200: #edf2f7;
    --color-gray-300: #e2e8f0;
    --color-gray-400: #cbd5e0;
    --color-gray-500: #a0aec0;
    --color-gray-600: #718096;
    --color-gray-700: #4a5568;
    --color-gray-800: #2d3748;
    --color-gray-900: #1a202c;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-dark: #2d3748;
    --bg-darker: #1a202c;
    
    /* Text Colors */
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #a0aec0;
    --text-white: #ffffff;
    
    /* Priority Colors */
    --priority-critical: #f56565;
    --priority-high: #ed8936;
    --priority-medium: #4299e1;
    --priority-low: #48bb78;
    
    /* Status Colors */
    --status-not-started: #a0aec0;
    --status-started: #4299e1;
    --status-testing: #ed8936;
    --status-ready: #9f7aea;
    --status-done: #48bb78;
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Shadows */
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Z-index Scale */
    --z-index-dropdown: 1000;
    --z-index-modal: 1050;
    --z-index-tooltip: 1100;
    --z-index-top: 9999;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-height: 4rem;
    --sidebar-width: 250px;
}

/* Theme-specific color overrides */
.moonshire-theme {
    --theme-primary: #9f7aea;
    --theme-secondary: #805ad5;
    --theme-accent: #b794f6;
    --theme-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --theme-text: #ffffff;
    --theme-card-bg: rgba(255, 255, 255, 0.1);
}

.necrozone-theme {
    --theme-primary: #e53e3e;
    --theme-secondary: #c53030;
    --theme-accent: #fc8181;
    --theme-bg: linear-gradient(135deg, #232526 0%, #414345 100%);
    --theme-text: #ffffff;
    --theme-card-bg: rgba(255, 255, 255, 0.05);
}

/* Utility Classes */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }

.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.m-xs { margin: var(--space-xs); }
.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }
.m-xl { margin: var(--space-xl); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.transition-fast { transition: all var(--transition-fast); }
.transition-normal { transition: all var(--transition-normal); }
.transition-slow { transition: all var(--transition-slow); }

/* Loading and animation utilities */
.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 0.8s linear infinite;
    margin-right: var(--space-sm);
}

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

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

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

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* Screen reader only utility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}