/* XML Generator - Design System */
:root {
    --base-black: #121212;
    --primary-purple: #c59ede;
    --success-green: #2E7D32;
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #e0e0e0;
    --gray-300: #bdbdbd;
    --gray-400: #9e9e9e;
    --gray-500: #757575;
    --gray-600: #616161;
    --gray-700: #424242;
    --gray-800: #303030;
    --gray-900: #212121;
    
    /* Status colors */
    --warning-orange: #FF9800;
    --error-red: #f44336;
    --info-blue: #2196f3;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    
    /* 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);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--base-black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.flex {
    display: flex;
    gap: var(--spacing-md);
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.text-center {
    text-align: center;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: (--primary-purple)
}

h1 {
    font-size: 2.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2rem;
    line-height: 1.3;
}

h3 {
    font-size: 1.5rem;
    line-height: 1.4;
}

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

.lead {
    font-size: 1.125rem;
    color: var(--gray-300);
}

.small {
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary-purple);
    color: var(--white);
}

.btn-primary:hover:not(:disabled) {
    background-color: #7B1FA2;
    transform: translateY(-1px);
}

.btn-success {
    background-color: var(--success-green);
    color: var(--white);
}

.btn-success:hover:not(:disabled) {
    background-color: #388E3C;
}

.btn-secondary {
    background-color: transparent;
    color: var(--gray-300);
    border: 1px solid var(--gray-600);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--gray-800);
    color: var(--white);
}

.btn-danger {
    background-color: var(--error-red);
    color: var(--white);
}

.btn-danger:hover:not(:disabled) {
    background-color: #d32f2f;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
    min-height: 36px;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    min-height: 52px;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--white);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--gray-800);
    border: 1px solid var(--gray-600);
    border-radius: var(--radius-md);
    color: var(--white);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(106, 27, 154, 0.1);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    color: var(--error-red);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* Cards */
.card {
    background-color: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.card-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-700);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--gray-800);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--gray-700);
}

.table th {
    background-color: var(--gray-700);
    font-weight: 600;
    color: var(--white);
}

.table tr:hover {
    background-color: var(--gray-700);
}

/* Navigation */
.navbar {
    background-color: var(--gray-900);
    border-bottom: 1px solid var(--gray-700);
    padding: var(--spacing-md) 0;
}

.nav-link {
    color: var(--gray-300);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
    background-color: var(--gray-700);
}

/* Tooltips */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--gray-900);
    color: var(--white);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(1px);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--gray-900);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
}

.tooltip:hover::after,
.tooltip:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-8px);
}

/* Progress indicators */
.progress {
    width: 100%;
    height: 8px;
    background-color: var(--gray-700);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-purple);
    transition: width 0.3s ease;
}

/* Loading spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-600);
    border-top: 2px solid var(--primary-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Status badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background-color: rgba(46, 125, 50, 0.2);
    color: var(--success-green);
}

.badge-warning {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning-orange);
}

.badge-error {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error-red);
}

.badge-info {
    background-color: rgba(33, 150, 243, 0.2);
    color: var(--info-blue);
}

/* Drag and drop */
.dropzone {
    border: 2px dashed var(--gray-600);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--primary-purple);
    background-color: rgba(106, 27, 154, 0.05);
}

.dropzone-active {
    border-color: var(--success-green);
    background-color: rgba(46, 125, 50, 0.05);
}

/* Alerts */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background-color: rgba(46, 125, 50, 0.1);
    border: 1px solid var(--success-green);
    color: var(--success-green);
}

.alert-warning {
    background-color: rgba(255, 152, 0, 0.1);
    border: 1px solid var(--warning-orange);
    color: var(--warning-orange);
}

.alert-error {
    background-color: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--error-red);
    color: var(--error-red);
}

.alert-info {
    background-color: rgba(33, 150, 243, 0.1);
    border: 1px solid var(--info-blue);
    color: var(--info-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .flex {
        flex-direction: column;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .navbar .flex {
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav-link {
        text-align: center;
    }
}

@media (min-width: 769px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Utility classes */
.hidden {
    display: none;
}

.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;
}

.accent {
    color: var(--success-green);
}

.text-purple {
    color: var(--primary-purple);
}

.text-gray {
    color: var(--gray-400);
}

.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); }

.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); }