/**
 * LocalGhost.ai Brand Utilities
 * 
 * Drop-in CSS utilities for building interfaces with the LocalGhost aesthetic.
 * Include this file and use the utility classes, or import just the variables.
 * 
 * Usage:
 *   <link rel="stylesheet" href="localghost-utilities.css">
 *   
 * Or import variables only:
 *   @import url('localghost-utilities.css') layer(tokens);
 *
 * Documentation: https://localghost.ai/brand-guidelines
 */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */

:root {
    /* Colors - Core Palette */
    --lg-void: #111111;
    --lg-void-lighter: #1a1a1a;
    --lg-void-rgb: 17, 17, 17;
    
    --lg-terminal: #33FF00;
    --lg-terminal-dim: #1a8000;
    --lg-terminal-rgb: 51, 255, 0;
    
    --lg-text: #E0E0E0;
    --lg-text-dim: #808080;
    --lg-text-rgb: 224, 224, 224;
    
    --lg-border: #333333;
    --lg-warning: #FF3333;
    --lg-warning-alt: #FF6B6B;
    
    /* Typography */
    --lg-font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', monospace;
    --lg-font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    
    --lg-font-size-xs: 0.7rem;
    --lg-font-size-sm: 0.8rem;
    --lg-font-size-base: 0.9rem;
    --lg-font-size-md: 1rem;
    --lg-font-size-lg: 1.2rem;
    --lg-font-size-xl: 1.5rem;
    --lg-font-size-2xl: 2rem;
    
    --lg-line-height: 1.7;
    --lg-letter-spacing-tight: 0.02em;
    --lg-letter-spacing-normal: 0.05em;
    --lg-letter-spacing-wide: 0.1em;
    --lg-letter-spacing-wider: 0.2em;
    
    /* Spacing */
    --lg-space-xs: 0.25rem;
    --lg-space-sm: 0.5rem;
    --lg-space-md: 1rem;
    --lg-space-lg: 1.5rem;
    --lg-space-xl: 2rem;
    --lg-space-2xl: 3rem;
    --lg-space-3xl: 4rem;
    
    /* Layout */
    --lg-max-width-text: 750px;
    --lg-max-width-content: 900px;
    --lg-max-width-wide: 1200px;
    
    /* Borders */
    --lg-border-width: 1px;
    --lg-border-radius: 0;
    --lg-border-radius-sm: 4px;
    
    /* Effects */
    --lg-glow-terminal: 0 0 10px var(--lg-terminal), 0 0 20px var(--lg-terminal-dim);
    --lg-glow-text: 0 0 5px var(--lg-terminal-dim);
    --lg-shadow-terminal: 0 0 30px rgba(51, 255, 0, 0.1);
    
    /* Transitions */
    --lg-transition-fast: 0.1s ease;
    --lg-transition-base: 0.2s ease;
    --lg-transition-slow: 0.3s ease;
    
    /* Z-index scale */
    --lg-z-base: 1;
    --lg-z-dropdown: 100;
    --lg-z-sticky: 500;
    --lg-z-modal: 1000;
    --lg-z-overlay: 9999;
}


/* ==========================================================================
   BASE RESET & DEFAULTS
   ========================================================================== */

.lg-base {
    background: var(--lg-void);
    color: var(--lg-text);
    font-family: var(--lg-font-system);
    font-size: 16px;
    line-height: var(--lg-line-height);
}

.lg-base ::selection {
    background: var(--lg-terminal);
    color: var(--lg-void);
}


/* ==========================================================================
   SCANLINE OVERLAY
   ========================================================================== */

.lg-scanlines::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.1) 2px,
        rgba(0, 0, 0, 0.1) 4px
    );
    z-index: var(--lg-z-overlay);
}


/* ==========================================================================
   TYPOGRAPHY UTILITIES
   ========================================================================== */

/* Font families */
.lg-mono { font-family: var(--lg-font-mono); }
.lg-system { font-family: var(--lg-font-system); }

/* Font sizes */
.lg-text-xs { font-size: var(--lg-font-size-xs); }
.lg-text-sm { font-size: var(--lg-font-size-sm); }
.lg-text-base { font-size: var(--lg-font-size-base); }
.lg-text-md { font-size: var(--lg-font-size-md); }
.lg-text-lg { font-size: var(--lg-font-size-lg); }
.lg-text-xl { font-size: var(--lg-font-size-xl); }
.lg-text-2xl { font-size: var(--lg-font-size-2xl); }

/* Font weights */
.lg-font-light { font-weight: 300; }
.lg-font-normal { font-weight: 400; }
.lg-font-medium { font-weight: 500; }
.lg-font-bold { font-weight: 700; }

/* Letter spacing */
.lg-tracking-tight { letter-spacing: var(--lg-letter-spacing-tight); }
.lg-tracking-normal { letter-spacing: var(--lg-letter-spacing-normal); }
.lg-tracking-wide { letter-spacing: var(--lg-letter-spacing-wide); }
.lg-tracking-wider { letter-spacing: var(--lg-letter-spacing-wider); }

/* Terminal prompt prefix */
.lg-prompt::before {
    content: '> ';
    color: var(--lg-terminal);
}


/* ==========================================================================
   COLOR UTILITIES
   ========================================================================== */

/* Text colors */
.lg-color-text { color: var(--lg-text); }
.lg-color-dim { color: var(--lg-text-dim); }
.lg-color-terminal { color: var(--lg-terminal); }
.lg-color-warning { color: var(--lg-warning); }

/* Background colors */
.lg-bg-void { background-color: var(--lg-void); }
.lg-bg-void-lighter { background-color: var(--lg-void-lighter); }
.lg-bg-terminal { background-color: var(--lg-terminal); }
.lg-bg-warning { background-color: var(--lg-warning); }

/* Border colors */
.lg-border-default { border-color: var(--lg-border); }
.lg-border-terminal { border-color: var(--lg-terminal); }
.lg-border-terminal-dim { border-color: var(--lg-terminal-dim); }
.lg-border-warning { border-color: var(--lg-warning); }


/* ==========================================================================
   SPACING UTILITIES
   ========================================================================== */

/* Padding */
.lg-p-0 { padding: 0; }
.lg-p-xs { padding: var(--lg-space-xs); }
.lg-p-sm { padding: var(--lg-space-sm); }
.lg-p-md { padding: var(--lg-space-md); }
.lg-p-lg { padding: var(--lg-space-lg); }
.lg-p-xl { padding: var(--lg-space-xl); }

.lg-px-md { padding-left: var(--lg-space-md); padding-right: var(--lg-space-md); }
.lg-py-md { padding-top: var(--lg-space-md); padding-bottom: var(--lg-space-md); }
.lg-px-lg { padding-left: var(--lg-space-lg); padding-right: var(--lg-space-lg); }
.lg-py-lg { padding-top: var(--lg-space-lg); padding-bottom: var(--lg-space-lg); }
.lg-px-xl { padding-left: var(--lg-space-xl); padding-right: var(--lg-space-xl); }
.lg-py-xl { padding-top: var(--lg-space-xl); padding-bottom: var(--lg-space-xl); }

/* Margin */
.lg-m-0 { margin: 0; }
.lg-m-xs { margin: var(--lg-space-xs); }
.lg-m-sm { margin: var(--lg-space-sm); }
.lg-m-md { margin: var(--lg-space-md); }
.lg-m-lg { margin: var(--lg-space-lg); }
.lg-m-xl { margin: var(--lg-space-xl); }

.lg-mb-sm { margin-bottom: var(--lg-space-sm); }
.lg-mb-md { margin-bottom: var(--lg-space-md); }
.lg-mb-lg { margin-bottom: var(--lg-space-lg); }
.lg-mb-xl { margin-bottom: var(--lg-space-xl); }

.lg-mt-sm { margin-top: var(--lg-space-sm); }
.lg-mt-md { margin-top: var(--lg-space-md); }
.lg-mt-lg { margin-top: var(--lg-space-lg); }
.lg-mt-xl { margin-top: var(--lg-space-xl); }

/* Gap */
.lg-gap-sm { gap: var(--lg-space-sm); }
.lg-gap-md { gap: var(--lg-space-md); }
.lg-gap-lg { gap: var(--lg-space-lg); }
.lg-gap-xl { gap: var(--lg-space-xl); }


/* ==========================================================================
   BORDER UTILITIES
   ========================================================================== */

.lg-border { border: var(--lg-border-width) solid var(--lg-border); }
.lg-border-t { border-top: var(--lg-border-width) solid var(--lg-border); }
.lg-border-b { border-bottom: var(--lg-border-width) solid var(--lg-border); }
.lg-border-l { border-left: var(--lg-border-width) solid var(--lg-border); }
.lg-border-r { border-right: var(--lg-border-width) solid var(--lg-border); }

.lg-border-terminal { border: var(--lg-border-width) solid var(--lg-terminal); }
.lg-border-2 { border-width: 2px; }


/* ==========================================================================
   EFFECT UTILITIES
   ========================================================================== */

/* Glow effects */
.lg-glow {
    text-shadow: var(--lg-glow-text);
}

.lg-glow-box {
    box-shadow: var(--lg-shadow-terminal);
}

.lg-glow-strong {
    text-shadow: var(--lg-glow-terminal);
}

/* Cursor blink */
.lg-cursor {
    display: inline-block;
    width: 0.6em;
    height: 1.2em;
    background: var(--lg-terminal);
    animation: lg-blink 1.2s step-end infinite;
    vertical-align: middle;
    margin-left: 0.2em;
    box-shadow: 0 0 8px var(--lg-terminal), 0 0 2px var(--lg-terminal);
}

@keyframes lg-blink {
    50% { opacity: 0; }
}

/* Flicker effect */
.lg-flicker {
    animation: lg-flicker 6s ease-in-out infinite;
}

@keyframes lg-flicker {
    0%, 5%, 11%, 21%, 26%, 38%, 45%, 64%, 70%, 86%, 93%, 100% { 
        opacity: 1; 
    }
    7%, 9% { opacity: 0.94; }
    23%, 24% { opacity: 0.96; }
    41%, 43% { opacity: 0.95; }
    67%, 68% { opacity: 0.97; }
    89%, 91% { opacity: 0.96; }
}


/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

.lg-flex { display: flex; }
.lg-flex-col { flex-direction: column; }
.lg-flex-wrap { flex-wrap: wrap; }
.lg-items-center { align-items: center; }
.lg-justify-center { justify-content: center; }
.lg-justify-between { justify-content: space-between; }

.lg-grid { display: grid; }
.lg-grid-2 { grid-template-columns: repeat(2, 1fr); }
.lg-grid-3 { grid-template-columns: repeat(3, 1fr); }
.lg-grid-4 { grid-template-columns: repeat(4, 1fr); }

.lg-max-w-text { max-width: var(--lg-max-width-text); }
.lg-max-w-content { max-width: var(--lg-max-width-content); }
.lg-max-w-wide { max-width: var(--lg-max-width-wide); }
.lg-mx-auto { margin-left: auto; margin-right: auto; }


/* ==========================================================================
   COMPONENT: BUTTONS
   ========================================================================== */

.lg-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: var(--lg-border-width) solid var(--lg-text);
    background: transparent;
    color: var(--lg-text);
    font-family: var(--lg-font-mono);
    font-size: var(--lg-font-size-sm);
    cursor: pointer;
    transition: all var(--lg-transition-base);
    text-decoration: none;
    text-align: center;
}

.lg-btn:hover {
    background: var(--lg-text);
    color: var(--lg-void);
}

.lg-btn-terminal {
    border-color: var(--lg-terminal);
    color: var(--lg-terminal);
}

.lg-btn-terminal:hover {
    background: var(--lg-terminal);
    color: var(--lg-void);
}

.lg-btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--lg-font-size-xs);
}

.lg-btn-lg {
    padding: 1rem 2rem;
    font-size: var(--lg-font-size-base);
}


/* ==========================================================================
   COMPONENT: CARDS / BOXES
   ========================================================================== */

.lg-card {
    background: var(--lg-void);
    border: var(--lg-border-width) solid var(--lg-border);
    padding: var(--lg-space-lg);
}

.lg-card-terminal {
    border-color: var(--lg-terminal);
    box-shadow: var(--lg-shadow-terminal);
}

.lg-card-warning {
    border-color: var(--lg-warning);
}


/* ==========================================================================
   COMPONENT: SECTION HEADER
   ========================================================================== */

.lg-section-label {
    font-family: var(--lg-font-mono);
    font-size: var(--lg-font-size-xs);
    color: var(--lg-terminal);
    letter-spacing: var(--lg-letter-spacing-wider);
    margin-bottom: var(--lg-space-sm);
}

.lg-section-label::before {
    content: '> ';
}


/* ==========================================================================
   COMPONENT: CODE BLOCKS
   ========================================================================== */

.lg-code {
    background: var(--lg-void-lighter);
    padding: 0.2rem 0.5rem;
    border: var(--lg-border-width) solid var(--lg-border);
    font-family: var(--lg-font-mono);
    font-size: 0.85em;
    color: var(--lg-terminal);
}

.lg-code-block {
    background: var(--lg-void-lighter);
    border: var(--lg-border-width) solid var(--lg-border);
    padding: var(--lg-space-lg);
    font-family: var(--lg-font-mono);
    font-size: var(--lg-font-size-sm);
    overflow-x: auto;
    line-height: 1.6;
}


/* ==========================================================================
   COMPONENT: TERMINAL BOX
   ========================================================================== */

.lg-terminal-box {
    background: var(--lg-void);
    border: var(--lg-border-width) solid var(--lg-terminal-dim);
    box-shadow: 
        0 0 0 1px rgba(51, 255, 0, 0.1),
        0 0 30px rgba(51, 255, 0, 0.1),
        0 20px 50px rgba(0, 0, 0, 0.5),
        inset 0 0 100px rgba(51, 255, 0, 0.02);
    font-family: var(--lg-font-mono);
}

.lg-terminal-header {
    display: flex;
    align-items: center;
    padding: 0.6rem 1rem;
    background: var(--lg-void-lighter);
    border-bottom: var(--lg-border-width) solid var(--lg-border);
    gap: 0.5rem;
}

.lg-terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.lg-terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
}

.lg-terminal-btn-close { background: #ff5f56; }
.lg-terminal-btn-minimize { background: #ffbd2e; }
.lg-terminal-btn-maximize { background: #27ca40; }

.lg-terminal-title {
    flex: 1;
    text-align: center;
    font-size: var(--lg-font-size-xs);
    color: var(--lg-text-dim);
    letter-spacing: var(--lg-letter-spacing-wide);
}

.lg-terminal-body {
    padding: var(--lg-space-lg);
    min-height: 200px;
}


/* ==========================================================================
   COMPONENT: DIVIDER
   ========================================================================== */

.lg-divider {
    border: none;
    border-top: var(--lg-border-width) solid var(--lg-border);
    margin: var(--lg-space-3xl) 0;
}


/* ==========================================================================
   COMPONENT: LINKS
   ========================================================================== */

.lg-link {
    color: var(--lg-terminal);
    text-decoration: none;
    border-bottom: var(--lg-border-width) solid var(--lg-terminal-dim);
    transition: all var(--lg-transition-base);
}

.lg-link:hover {
    border-bottom-color: var(--lg-terminal);
    text-shadow: var(--lg-glow-text);
}


/* ==========================================================================
   COMPONENT: BADGES / TAGS
   ========================================================================== */

.lg-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-family: var(--lg-font-mono);
    font-size: var(--lg-font-size-xs);
    border: var(--lg-border-width) solid var(--lg-border);
    color: var(--lg-text-dim);
}

.lg-badge-terminal {
    border-color: var(--lg-terminal-dim);
    color: var(--lg-terminal);
}

.lg-badge-warning {
    border-color: var(--lg-warning);
    color: var(--lg-warning);
}


/* ==========================================================================
   COMPONENT: LISTS
   ========================================================================== */

.lg-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lg-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: var(--lg-space-sm);
}

.lg-list li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--lg-terminal);
    font-family: var(--lg-font-mono);
}


/* ==========================================================================
   RESPONSIVE UTILITIES
   ========================================================================== */

@media (max-width: 768px) {
    .lg-hide-mobile { display: none; }
    
    .lg-grid-2,
    .lg-grid-3,
    .lg-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .lg-text-2xl { font-size: var(--lg-font-size-xl); }
    .lg-text-xl { font-size: var(--lg-font-size-lg); }
}

@media (min-width: 769px) {
    .lg-hide-desktop { display: none; }
}


/* ==========================================================================
   ANIMATION UTILITIES
   ========================================================================== */

.lg-animate-pulse {
    animation: lg-pulse 2s infinite;
}

@keyframes lg-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.lg-transition {
    transition: all var(--lg-transition-base);
}

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

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