@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0a0c10;
    --bg-secondary: #11141d;
    --bg-card: rgba(20, 24, 37, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent: #5e5af6;
    --accent-glow: rgba(94, 90, 246, 0.35);
    --accent-hover: #7572f8;
    
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.25);
    --error: #ef4444;
    --error-glow: rgba(239, 68, 68, 0.25);
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.25);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 30px;
}

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

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 10% 10%, rgba(94, 90, 246, 0.12) 0px, transparent 40%),
        radial-gradient(at 90% 80%, rgba(16, 185, 129, 0.08) 0px, transparent 40%),
        radial-gradient(at 50% 50%, rgba(20, 24, 37, 0.5) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

header {
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    background: rgba(10, 12, 16, 0.5);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent), #e879f9);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px var(--accent-glow);
    font-family: var(--font-heading);
    font-weight: 800;
    color: white;
    font-size: 1.5rem;
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #ffffff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(94, 90, 246, 0.15);
    border: 1px solid rgba(94, 90, 246, 0.3);
    color: #a5b4fc;
}

main {
    flex: 1;
    padding: 3rem 4rem;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Glass Card */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(16px);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: var(--border-hover);
}

/* Welcome & Upload Section */
.upload-container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 3.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.upload-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), #e879f9, var(--success));
}

.upload-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #fff 30%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.upload-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2.5rem;
}

.drop-zone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 4rem 2rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent);
    background: rgba(94, 90, 246, 0.05);
    box-shadow: 0 0 30px rgba(94, 90, 246, 0.1) inset;
}

.drop-zone-icon {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    font-size: 2rem;
}

.drop-zone:hover .drop-zone-icon {
    transform: translateY(-5px);
    background: var(--accent);
    color: white;
    box-shadow: 0 0 20px var(--accent-glow);
    border-color: transparent;
}

.drop-zone-text p {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.drop-zone-text span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* File Input Hidden */
#file-input {
    display: none;
}

/* Progress / Status Container */
.status-container {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    text-align: left;
    display: none;
}

.status-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.status-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.progress-bar-bg {
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), #a855f7);
    border-radius: 100px;
    box-shadow: 0 0 10px var(--accent-glow);
    transition: width 0.2s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.status-detail {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Workspace Dashboard */
.workspace-grid {
    display: none;
    grid-template-columns: 380px 1fr;
    gap: 2.5rem;
    align-items: start;
    animation: fadeInUp 0.5s ease;
}

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

/* Tree Sidebar */
.sidebar-tree {
    max-height: 75vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-badge {
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    color: var(--text-secondary);
}

.tree-container {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

/* XML Tree Styling */
.tree-node {
    margin-left: 1.25rem;
    position: relative;
}

.tree-node-wrapper {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    user-select: none;
    margin-bottom: 2px;
}

.tree-node-wrapper:hover {
    background: rgba(255, 255, 255, 0.04);
}

.tree-node-wrapper.selected {
    background: rgba(94, 90, 246, 0.15);
    border-left: 3px solid var(--accent);
}

.tree-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    font-size: 0.65rem;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.tree-toggle.collapsed {
    transform: rotate(-90deg);
}

.tree-toggle.empty {
    opacity: 0;
    pointer-events: none;
}

.tree-icon {
    font-size: 0.95rem;
    color: #818cf8;
}

.tree-label {
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.tree-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
    padding: 0.05rem 0.35rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    margin-left: auto;
}

.tree-children {
    transition: height 0.3s ease;
    overflow: hidden;
}

.tree-children.collapsed {
    display: none;
}

/* Configurator Main Panel */
.config-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.config-step {
    padding: 2rem;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.step-num {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent), #a855f7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    box-shadow: 0 0 15px rgba(94, 90, 246, 0.3);
}

.step-title h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.step-title p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Config Grid elements */
.selector-empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.selector-empty-state i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.fields-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.field-checkbox-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-fast);
}

.field-checkbox-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.04);
}

.field-checkbox-card.selected {
    border-color: var(--accent);
    background: rgba(94, 90, 246, 0.06);
}

.custom-checkbox {
    width: 18px;
    height: 18px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.field-checkbox-card.selected .custom-checkbox {
    background: var(--accent);
    border-color: var(--accent);
}

.custom-checkbox i {
    font-size: 0.7rem;
    color: white;
    display: none;
}

.field-checkbox-card.selected .custom-checkbox i {
    display: block;
}

.field-info {
    flex: 1;
    min-width: 0;
}

.field-name {
    font-family: monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.field-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

.field-type-badge {
    background: rgba(255, 255, 255, 0.05);
    padding: 0 0.25rem;
    border-radius: 2px;
    font-size: 0.6rem;
    text-transform: uppercase;
}

/* Action Controls Panel */
.action-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

.action-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn {
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-family: var(--font-body);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #7c3aed);
    color: white;
    box-shadow: 0 4px 15px rgba(94, 90, 246, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(94, 90, 246, 0.45);
    background: linear-gradient(135deg, var(--accent-hover), #8b5cf6);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Spinner */
.spinner {
    animation: rotate 1s linear infinite;
    display: inline-block;
}

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

/* Columns Order & Rename Panel */
.columns-order-section {
    display: none;
    margin-top: 1.5rem;
}

.columns-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.column-config-row {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    display: grid;
    grid-template-columns: 24px 1fr 200px;
    align-items: center;
    gap: 1rem;
}

.column-drag-handle {
    cursor: grab;
    color: var(--text-muted);
    text-align: center;
    font-size: 0.9rem;
}

.column-source-path {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.column-rename-input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
    font-family: var(--font-body);
    width: 100%;
    transition: var(--transition-fast);
}

.column-rename-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(94, 90, 246, 0.15);
}

/* Result / Download Card */
.result-card {
    display: none;
    margin-top: 2rem;
    padding: 2rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
    background: rgba(16, 185, 129, 0.05);
    border-radius: var(--radius-md);
    animation: fadeInUp 0.4s ease;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.result-icon {
    width: 36px;
    height: 36px;
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success);
    font-size: 1.1rem;
}

.result-title h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
}

.result-title p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.download-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.download-info-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.download-link-btn {
    background: var(--success);
    color: white;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 10px var(--success-glow);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.download-link-btn:hover {
    transform: translateY(-2px);
    background: #059669;
    box-shadow: 0 6px 15px rgba(16, 185, 129, 0.4);
}

footer {
    padding: 2rem 4rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    background: rgba(10, 12, 16, 0.3);
}

/* Fontawesome alternative custom icons rules */
[class^="icon-"] {
    display: inline-block;
    width: 1em;
    height: 1em;
    stroke-width: 0;
    stroke: currentColor;
    fill: currentColor;
}