/* ===================================================================
   Azure Naming Tool - Modern Design System
   Version: 1.0
   Date: October 17, 2025
   Description: Foundation CSS with theme variables and design system
   =================================================================== */

/* ===================================================================
   CSS Variables - Design System Foundation
   =================================================================== */

:root {
    /* ============ Sidebar Colors (Constant in both themes) ============ */
    --sidebar-bg-start: #2d3748;
    --sidebar-bg-end: #1a202c;
    --sidebar-text: rgba(255, 255, 255, 0.85);
    --sidebar-text-active: #ffffff;
    --sidebar-hover-bg: rgba(255, 255, 255, 0.1);
    --sidebar-active-bg: rgba(255, 255, 255, 0.15);
    --sidebar-border: rgba(255, 255, 255, 0.1);
    
    /* ============ Light Theme Colors (Default) ============ */
    --color-bg-primary: #fafafa;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f5f5f5;
    --color-border: #e5e5e5;
    --color-border-hover: #d4d4d4;
    --color-text-primary: #171717;
    --color-text-secondary: #737373;
    --color-text-tertiary: #a3a3a3;
    --color-hover-bg: #fafafa;
    --color-card-hover-bg: #f0fafb;
    --color-input-bg: #fafafa;
    --color-input-focus-bg: #ffffff;
    
    /* ============ Azure Accent Colors (Consistent across themes) ============ */
    --color-azure-blue: #0078d4;
    --color-azure-blue-dark: #005a9e;
    --color-azure-blue-darker: #004578;
    --color-azure-teal: #00b7c3;
    --color-azure-teal-light: #50e6ff;
    --color-azure-cyan: #50e6ff;
    --color-azure-purple: #8661c5;
    --color-azure-purple-dark: #6b4ba1;
    --color-success-green: #059669;
    --color-success-green-light: #10b981;
    
    /* ============ Semantic Colors ============ */
    --color-error: #dc2626;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    --color-success: #059669;
    
    /* ============ Spacing System ============ */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* ============ Border Radius ============ */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;
    
    /* ============ Transitions ============ */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* ============ 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-button: 0 2px 8px rgba(0, 120, 212, 0.2);
    --shadow-button-hover: 0 4px 12px rgba(0, 120, 212, 0.3);
    
    /* ============ Z-Index System ============ */
    --z-dropdown: 1000;
    --z-sidebar: 1010;
    --z-header: 1100;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1200;
    --z-modal: 1300;
    --z-popover: 1400;
    --z-tooltip: 1500;
    
    /* ============ Typography ============ */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Roboto", "Helvetica Neue", Arial, sans-serif;
    --font-family-mono: "Consolas", "Monaco", "Courier New", monospace;
    
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;
    --font-size-4xl: 28px;
    --font-size-5xl: 32px;
    --font-size-6xl: 36px;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
}

/* ===================================================================
   Dark Theme Variables
   =================================================================== */

[data-theme="dark"] {
    /* ============ Dark Theme Colors ============ */
    --color-bg-primary: #0d1117;
    --color-bg-secondary: #161b22;
    --color-bg-tertiary: #1c2128;
    --color-border: #30363d;
    --color-border-hover: #484f58;
    --color-text-primary: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-text-tertiary: #6e7681;
    --color-hover-bg: #1c2128;
    --color-card-hover-bg: #1c2128;
    --color-input-bg: #0d1117;
    --color-input-focus-bg: #161b22;
    
    /* Shadows adjusted for dark theme */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

/* ===================================================================
   Theme Transitions
   =================================================================== */

/* Smooth theme transitions when switching */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *:before,
html.theme-transitioning *:after {
    transition: background-color 0.3s ease, 
                color 0.3s ease, 
                border-color 0.3s ease !important;
    transition-delay: 0s !important;
}

/* ===================================================================
   Global Resets & Base Styles
   =================================================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

/* ===================================================================
   Typography
   =================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-6xl); }
h2 { font-size: var(--font-size-5xl); }
h3 { font-size: var(--font-size-4xl); }
h4 { font-size: var(--font-size-3xl); }
h5 { font-size: var(--font-size-2xl); }
h6 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-azure-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-azure-blue-dark);
}

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

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-xs); }
.m-2 { margin: var(--spacing-sm); }
.m-3 { margin: var(--spacing-md); }
.m-4 { margin: var(--spacing-lg); }
.m-5 { margin: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* Text Utilities */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-azure-blue { color: var(--color-azure-blue); }
.text-azure-teal { color: var(--color-azure-teal); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

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

/* Display Utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flexbox Utilities */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }
.gap-5 { gap: var(--spacing-xl); }

/* Border Utilities */
.rounded { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow Utilities */
.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 Utilities */
.transition-fast { transition: all var(--transition-fast); }
.transition-normal { transition: all var(--transition-normal); }
.transition-slow { transition: all var(--transition-slow); }

/* ===================================================================
   Scrollbar Styling (Webkit browsers)
   =================================================================== */

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-hover);
}

/* Dark theme scrollbar */
[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--color-border);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-hover);
}

/* ===================================================================
   Focus Styles
   =================================================================== */

*:focus {
    outline: 2px solid var(--color-azure-blue);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-azure-blue);
    outline-offset: 2px;
}

/* ===================================================================
   Selection Styles
   =================================================================== */

::selection {
    background-color: var(--color-azure-blue);
    color: white;
}

::-moz-selection {
    background-color: var(--color-azure-blue);
    color: white;
}