/**
 * Phantom Tools - Common Design System
 * Shared styles and components for all Phantom Tools
 * Version: 1.0.0
 */

/* ================================================
   CSS Custom Properties (Variables)
   ================================================ */

:root {
    /* Primary Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-gradient-hover: linear-gradient(135deg, #5568d3 0%, #653a8b 100%);
    --accent-gradient: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
    
    /* Light Theme Colors */
    --bg-light: #ffffff;
    --bg-light-alt: #f7fafc;
    --text-light: #2d3748;
    --text-light-secondary: #555555;
    --text-light-muted: #888888;
    --primary-light: #667eea;
    --primary-hover-light: #5568d3;
    --border-light: #e2e8f0;
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-light-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
    --input-bg-light: #ffffff;
    --input-text-light: #2d3748;
    --card-bg-light: rgba(255, 255, 255, 0.98);
    
    /* Dark Theme Colors */
    --bg-dark: #1a202c;
    --bg-dark-alt: #2d3748;
    --text-dark: #e2e8f0;
    --text-dark-secondary: #cbd5e1;
    --text-dark-muted: #94a3b8;
    --primary-dark: #a78bfa;
    --primary-hover-dark: #9370db;
    --border-dark: #4a5568;
    --shadow-dark: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-dark-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --input-bg-dark: #2d3748;
    --input-text-dark: #e2e8f0;
    --card-bg-dark: rgba(30, 30, 46, 0.95);
    
    /* Typography */
    --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-mono: 'Fira Code', 'Monaco', 'Courier New', monospace;
    
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 2rem;        /* 32px */
    --font-size-4xl: 2.5rem;      /* 40px */
    
    /* Spacing System */
    --spacing-xs: 0.25rem;    /* 4px */
    --spacing-sm: 0.5rem;     /* 8px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 2.5rem;    /* 40px */
    --spacing-3xl: 3rem;      /* 48px */
    
    /* Border Radius */
    --radius-sm: 0.375rem;    /* 6px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 1rem;        /* 16px */
    --radius-xl: 1.25rem;     /* 20px */
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    --transition-slower: 0.6s ease-out;
    
    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Badge Colors */
    --badge-primary: linear-gradient(135deg, #007bff, #0056b3);
    --badge-success: linear-gradient(135deg, #28a745, #1e7e34);
    --badge-info: linear-gradient(135deg, #17a2b8, #117a8b);
    --badge-warning: linear-gradient(135deg, #ffc107, #e0a800);
    --badge-danger: linear-gradient(135deg, #dc3545, #c82333);
    --badge-github: linear-gradient(135deg, #24292e, #000000);
}

/* ================================================
   Base Styles
   ================================================ */

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

body {
    font-family: var(--font-family-primary);
    background: var(--primary-gradient);
    color: var(--text-light);
    line-height: 1.6;
    transition: background var(--transition-slow), color var(--transition-base);
    min-height: 100vh;
}

/* Dark Mode Base Styles */
body.dark-mode {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: var(--text-dark);
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-4xl);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

body.dark-mode h1 {
    background: linear-gradient(135deg, #a78bfa 0%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

/* ================================================
   Container
   ================================================ */

.pt-container {
    background-color: var(--card-bg-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-light-lg);
    backdrop-filter: blur(10px);
    max-width: 95%;
    margin: 0 auto;
}

body.dark-mode .pt-container {
    background-color: var(--card-bg-dark);
    box-shadow: var(--shadow-dark-lg);
}

/* ================================================
   Navigation Bar
   ================================================ */

.pt-nav {
    background: var(--bg-light-alt);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--transition-base);
}

body.dark-mode .pt-nav {
    background: var(--bg-dark-alt);
    box-shadow: var(--shadow-dark);
}

.pt-nav-brand {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    transition: color var(--transition-base);
}

body.dark-mode .pt-nav-brand {
    color: var(--primary-dark);
}

.pt-nav-brand:hover {
    opacity: 0.8;
}

.pt-nav-brand i {
    font-size: var(--font-size-2xl);
}

.pt-nav-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ================================================
   Buttons
   ================================================ */

.pt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-slow);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    line-height: 1;
}

.pt-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.pt-btn:active {
    transform: translateY(-1px);
}

.pt-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Button Variants */
.pt-btn-secondary {
    background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.4);
}

.pt-btn-secondary:hover {
    box-shadow: 0 8px 25px rgba(8, 145, 178, 0.5);
}

.pt-btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.pt-btn-danger:hover {
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.5);
}

.pt-btn-ghost {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    box-shadow: 0 4px 15px rgba(100, 116, 139, 0.4);
}

.pt-btn-ghost:hover {
    box-shadow: 0 8px 25px rgba(100, 116, 139, 0.5);
}

/* Icon Button */
.pt-btn-icon {
    padding: 0.75rem;
    border-radius: var(--radius-md);
    background: var(--bg-light-alt);
    border: 2px solid var(--border-light);
    color: var(--text-light);
    min-width: 44px;
    min-height: 44px;
}

body.dark-mode .pt-btn-icon {
    background: var(--bg-dark-alt);
    border-color: var(--border-dark);
    color: var(--text-dark);
}

.pt-btn-icon:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

/* ================================================
   Input Fields
   ================================================ */

.pt-input,
.pt-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--input-bg-light);
    color: var(--input-text-light);
    font-family: var(--font-family-primary);
    transition: all var(--transition-base);
}

.pt-textarea {
    min-height: 240px;
    resize: vertical;
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.pt-input:focus,
.pt-textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

body.dark-mode .pt-input,
body.dark-mode .pt-textarea {
    background: var(--input-bg-dark);
    color: var(--input-text-dark);
    border-color: var(--border-dark);
}

body.dark-mode .pt-input:focus,
body.dark-mode .pt-textarea:focus {
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.2);
}

/* ================================================
   Cards
   ================================================ */

.pt-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(148, 163, 184, 0.1);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-slow);
}

.pt-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light-lg);
}

body.dark-mode .pt-card {
    background: rgba(15, 23, 42, 0.8);
    border-color: rgba(148, 163, 184, 0.1);
}

/* ================================================
   Badges
   ================================================ */

.pt-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
    transition: all var(--transition-slow);
}

.pt-badge:hover {
    transform: translateY(-2px);
}

.pt-badge-primary {
    background: var(--badge-primary);
    box-shadow: 0 3px 10px rgba(0, 123, 255, 0.3);
}

.pt-badge-success {
    background: var(--badge-success);
    box-shadow: 0 3px 10px rgba(40, 167, 69, 0.3);
}

.pt-badge-info {
    background: var(--badge-info);
    box-shadow: 0 3px 10px rgba(23, 162, 184, 0.3);
}

.pt-badge-warning {
    background: var(--badge-warning);
    color: #000;
    box-shadow: 0 3px 10px rgba(255, 193, 7, 0.3);
}

.pt-badge-danger {
    background: var(--badge-danger);
    box-shadow: 0 3px 10px rgba(220, 53, 69, 0.3);
}

.pt-badge-github {
    background: var(--badge-github);
    box-shadow: 0 3px 10px rgba(36, 41, 46, 0.3);
    text-decoration: none;
}

.pt-badge-github:hover {
    box-shadow: 0 5px 15px rgba(36, 41, 46, 0.4);
}

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

.pt-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    font-size: var(--font-size-sm);
    color: var(--text-light-muted);
    text-align: center;
}

body.dark-mode .pt-footer {
    border-top-color: var(--border-dark);
    color: var(--text-dark-muted);
}

/* ================================================
   Loading Spinner
   ================================================ */

.pt-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--primary-light);
    border-top-color: transparent;
    border-radius: 50%;
    animation: pt-spin 1s linear infinite;
}

body.dark-mode .pt-spinner {
    border-color: var(--primary-dark);
    border-top-color: transparent;
}

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

.pt-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-3xl);
}

/* ================================================
   Tooltips
   ================================================ */

[data-pt-tooltip] {
    position: relative;
    cursor: help;
}

[data-pt-tooltip]:before {
    content: attr(data-pt-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: var(--bg-dark-alt);
    color: var(--text-dark);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    box-shadow: var(--shadow-dark);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base), bottom var(--transition-base);
    z-index: var(--z-tooltip);
}

[data-pt-tooltip]:hover:before {
    opacity: 1;
    bottom: calc(100% + 12px);
}

/* ================================================
   Animations
   ================================================ */

@keyframes pt-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pt-fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pt-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pt-animate-fadeInUp {
    animation: pt-fadeInUp var(--transition-slower);
}

.pt-animate-fadeIn {
    animation: pt-fadeIn var(--transition-slower);
}

.pt-animate-pulse {
    animation: pt-pulse 2s ease-in-out infinite;
}

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

/* Spacing */
.pt-mt-xs { margin-top: var(--spacing-xs); }
.pt-mt-sm { margin-top: var(--spacing-sm); }
.pt-mt-md { margin-top: var(--spacing-md); }
.pt-mt-lg { margin-top: var(--spacing-lg); }
.pt-mt-xl { margin-top: var(--spacing-xl); }

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

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

/* Display */
.pt-flex { display: flex; }
.pt-inline-flex { display: inline-flex; }
.pt-grid { display: grid; }
.pt-hidden { display: none; }

/* Flex utilities */
.pt-flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.pt-flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pt-gap-xs { gap: var(--spacing-xs); }
.pt-gap-sm { gap: var(--spacing-sm); }
.pt-gap-md { gap: var(--spacing-md); }
.pt-gap-lg { gap: var(--spacing-lg); }
.pt-gap-xl { gap: var(--spacing-xl); }

/* Text alignment */
.pt-text-center { text-align: center; }
.pt-text-left { text-align: left; }
.pt-text-right { text-align: right; }

/* Text utilities */
.pt-text-muted { color: var(--text-light-muted); }
body.dark-mode .pt-text-muted { color: var(--text-dark-muted); }

/* ================================================
   Responsive Design
   ================================================ */

@media screen and (max-width: 768px) {
    :root {
        --font-size-4xl: 1.8rem;
        --font-size-3xl: 1.5rem;
    }
    
    .pt-container {
        padding: var(--spacing-lg);
    }
    
    .pt-nav {
        padding: var(--spacing-sm);
    }
    
    .pt-btn {
        padding: 0.6rem 1.2rem;
        font-size: var(--font-size-sm);
    }
}

@media screen and (min-width: 769px) and (max-width: 1023px) {
    .pt-container {
        max-width: 85%;
    }
}

@media screen and (min-width: 1024px) {
    .pt-container {
        max-width: 80%;
        max-width: 1200px;
    }
}

@media screen and (min-width: 1440px) {
    .pt-container {
        max-width: 70%;
        max-width: 1400px;
    }
}

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

.pt-skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-light);
    color: white;
    padding: var(--spacing-sm);
    text-decoration: none;
    z-index: var(--z-modal);
}

.pt-skip-link:focus {
    top: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

body.dark-mode *:focus-visible {
    outline-color: var(--primary-dark);
}

/* Reduce 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;
    }
}