/* ============================================
   style-excel.css - Excel File Viewer Styles
   Dark mode via global ci-theme system
   ============================================ */

/* Viewer-specific variables only.
   Base variables (--card-bg, --text-primary, etc.)
   come from custom_styles.css and auto-adapt to dark mode. */
:root {
    /* Brand Colors */
    --color-red: #e64e4e;
    --color-blue: #3399cc;
    --color-green: #339966;

    /* Excel Viewer Primary (green) */
    --ev-primary: #339966;
    --ev-primary-dark: #2d8659;
    --ev-primary-light: #3db375;
    --ev-primary-rgb: 51, 153, 102;

    /* Viewer layout */
    --ev-radius-sm: 6px;
    --ev-radius: 8px;
    --ev-radius-md: 12px;
    --ev-radius-lg: 16px;
    --ev-transition: 200ms ease;
    --ev-transition-fast: 150ms ease;
}

/* ============================================
   TOOL CONTAINER
   ============================================ */
.tool-container {
    max-width: 1000px !important;
    margin: 0 auto;
    padding: 30px 20px;
}

/* ============================================
   TOOL HEADER
   ============================================ */
.tool-header {
    text-align: center;
    margin-bottom: 30px;
}

.tool-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

.tool-icon {
    width: 56px;
    height: 56px;
    background: var(--ev-primary);
    border-radius: var(--ev-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: var(--shadow-md);
}

.tool-icon svg,
.tool-icon i {
    width: 32px;
    height: 32px;
}

.tool-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.tool-header h1 .highlight-text {
    color: var(--ev-primary);
}

.tool-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.tool-description strong {
    color: var(--text-primary);
}

.tool-description a {
    color: var(--ev-primary);
    text-decoration: none;
}

.tool-description a:hover {
    text-decoration: underline;
}

/* ============================================
   TOOL MAIN
   ============================================ */
.tool-main {
    background: var(--card-bg);
    border-radius: var(--ev-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

/* ============================================
   UPLOAD SECTION
   ============================================ */
.upload-section {
    padding: 30px;
}

.upload-area {
    border: 2px dashed var(--border-accent);
    border-radius: var(--ev-radius-md);
    padding: 50px 30px;
    text-align: center;
    cursor: pointer;
    transition: all var(--ev-transition);
    background: var(--card-secondary);
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--ev-primary);
    background: var(--card-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.upload-area.active {
    border-color: var(--ev-primary);
    background: rgba(var(--ev-primary-rgb), 0.08);
    border-style: solid;
}

.upload-content {
    position: relative;
    z-index: 1;
}

.upload-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--ev-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: var(--shadow-md);
}

.upload-icon-wrapper svg,
.upload-icon-wrapper i {
    width: 40px;
    height: 40px;
}

.upload-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
}

.upload-text p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin: 0;
}

.file-types {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
}

.file-type-badge {
    padding: 6px 14px;
    border-radius: var(--ev-radius);
    font-size: 0.85rem;
    font-weight: 600;
}

.file-type-badge.xlsx {
    background: rgba(var(--ev-primary-rgb), 0.12);
    color: var(--ev-primary);
}

.file-type-badge.xls {
    background: rgba(51, 153, 204, 0.12);
    color: var(--color-blue);
}

.upload-limit {
    margin-top: 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-container {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: var(--card-secondary);
    border-radius: var(--ev-radius);
}

.progress-container.active {
    display: block;
}

.progress-bar {
    background: var(--card-tertiary);
    border-radius: var(--ev-radius);
    height: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar .progress {
    height: 100%;
    background: var(--ev-primary);
    border-radius: var(--ev-radius);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

/* ============================================
   ERROR MESSAGE
   ============================================ */
.error-message {
    display: none;
    margin-top: 15px;
    padding: 15px 20px;
    background: var(--error-bg);
    border-radius: var(--ev-radius);
    color: var(--danger);
    line-height: 1.5;
    font-size: 0.95rem;
}

.error-message.active,
.error-message[style*="display: flex"] {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.error-message svg,
.error-message i {
    flex-shrink: 0;
    margin-top: 2px;
}

.error-message a {
    color: var(--ev-primary);
    text-decoration: underline;
}

/* ============================================
   EDITOR SECTION
   ============================================ */
.editor-section {
    display: none;
}

/* File Info Bar */
.file-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background: var(--card-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 15px;
}

.file-info-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.file-info-left svg,
.file-info-left i {
    width: 18px;
    height: 18px;
    color: var(--ev-primary);
    flex-shrink: 0;
}

.file-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.file-size {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-left: 8px;
}

.file-info-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sheet-count-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(var(--ev-primary-rgb), 0.12);
    color: var(--ev-primary);
    padding: 4px 10px;
    border-radius: var(--ev-radius-sm);
    font-weight: 600;
    font-size: 0.8rem;
}

.sheet-count-badge svg,
.sheet-count-badge i {
    width: 14px;
    height: 14px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: var(--ev-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.ready {
    background: var(--success-bg);
    color: var(--success-color);
}

.status-badge svg,
.status-badge i {
    width: 14px;
    height: 14px;
}

/* ============================================
   OPTIONS BAR
   ============================================ */
.options-bar {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 15px;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-group label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.option-group label svg,
.option-group label i {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.styled-select,
.option-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--ev-radius);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    min-width: 130px;
    transition: border-color var(--ev-transition);
}

.styled-select:focus,
.option-group select:focus {
    outline: none;
    border-color: var(--ev-primary);
}

.sheet-info {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Checkbox */
.checkbox-group {
    margin-left: 5px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--ev-primary);
    cursor: pointer;
}

.checkbox-custom {
    display: none;
}

.checkbox-label svg,
.checkbox-label i {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

/* ============================================
   TOOLBAR
   ============================================ */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 12px;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* View Toggle */
.view-toggle {
    display: flex;
    background: var(--card-secondary);
    border-radius: var(--ev-radius);
    padding: 3px;
    border: 1px solid var(--border-color);
}

.view-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--ev-radius-sm);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--ev-transition-fast);
    font-family: inherit;
}

.view-btn:hover {
    color: var(--text-primary);
    background: var(--card-tertiary);
}

.view-btn.active {
    background: var(--ev-primary);
    color: #fff;
}

.view-btn svg,
.view-btn i {
    width: 16px;
    height: 16px;
}

/* Toolbar Icon Buttons */
.toolbar-btn {
    width: 38px;
    height: 38px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--ev-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--ev-transition);
}

.toolbar-btn:hover {
    background: var(--card-tertiary);
    color: var(--ev-primary);
    border-color: var(--ev-primary);
}

.toolbar-btn svg,
.toolbar-btn i {
    width: 18px;
    height: 18px;
}

/* ============================================
   BUTTONS (scoped to override global .btn)
   ============================================ */
.tool-main .btn {
    padding: 10px 18px;
    border: none;
    border-radius: var(--ev-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--ev-transition);
    font-family: inherit;
    box-shadow: none;
}

.tool-main .btn svg,
.tool-main .btn i {
    width: 18px;
    height: 18px;
}

.tool-main .btn-primary {
    background: var(--ev-primary);
    color: #fff;
}

.tool-main .btn-primary:hover {
    background: var(--ev-primary-dark);
    transform: translateY(-1px);
    box-shadow: none;
}

.tool-main .btn-secondary {
    background: var(--card-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.tool-main .btn-secondary:hover {
    background: var(--card-tertiary);
    border-color: var(--border-accent);
}

.tool-main .btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    background: var(--card-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--ev-radius);
}

.tool-main .btn-icon:hover {
    background: var(--card-tertiary);
    color: var(--ev-primary);
    border-color: var(--ev-primary);
}

.tool-main .btn-danger {
    background: var(--error-bg) !important;
    color: var(--danger) !important;
    border: none !important;
}

.tool-main .btn-danger:hover {
    background: var(--danger);
    color: #fff;
}

/* ============================================
   CONTENT AREA
   ============================================ */
.content-area {
    min-height: 400px;
    max-height: 600px;
    overflow: auto;
    background: var(--card-bg);
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    gap: 15px;
    color: var(--text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--ev-primary);
    border-radius: 50%;
    animation: ev-spin 0.8s linear infinite;
}

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

/* Empty State */
.excel-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.excel-empty-state svg,
.excel-empty-state i {
    width: 64px;
    height: 64px;
    margin-bottom: 15px;
    opacity: 0.4;
}

.excel-empty-state p {
    font-size: 1rem;
    margin: 0;
}

/* Excel Table */
.excel-table-wrapper {
    overflow-x: auto;
}

.excel-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.excel-table th,
.excel-table td {
    padding: 10px 12px;
    text-align: left;
    border: 1px solid var(--border-color);
    white-space: nowrap;
}

.excel-table th {
    background: var(--card-secondary);
    color: var(--text-primary);
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.excel-table tbody tr:hover {
    background: var(--card-secondary);
}

.excel-table td {
    color: var(--text-secondary);
}

.excel-table td.hoverable-cell {
    cursor: default;
    transition: background var(--ev-transition-fast);
}

.excel-table td.hoverable-cell:hover {
    background: rgba(var(--ev-primary-rgb), 0.06);
}

/* JSON View */
.json-view {
    padding: 20px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-all;
    background: var(--card-tertiary);
    color: var(--text-primary);
    min-height: 300px;
}

/* ============================================
   STATS BAR
   ============================================ */
.stats-bar {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background: var(--card-secondary);
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
    gap: 15px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.stat-item svg,
.stat-item i {
    width: 14px;
    height: 14px;
    color: var(--text-muted);
}

/* ============================================
   ACTION BAR
   ============================================ */
.action-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}

/* ============================================
   RELATED TOOLS (scoped to override global)
   ============================================ */
.tool-main .related-tools {
    display: block;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    border-left: none;
    border-right: none;
    border-bottom: none;
    margin-top: 0;
}

.tool-main .related-tools h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 15px;
}

.tool-main .tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.tool-main .tool-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    background: var(--card-secondary);
    border-radius: var(--ev-radius);
    border: 1px solid var(--border-color);
    text-decoration: none;
    transition: all var(--ev-transition);
    color: var(--text-secondary);
}

.tool-main .tool-card:hover {
    border-color: var(--ev-primary);
    color: var(--ev-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tool-main .tool-card svg,
.tool-main .tool-card i {
    width: 24px;
    height: 24px;
}

.tool-main .tool-card span {
    font-size: 0.85rem;
    font-weight: 500;
}

/* ============================================
   CONTENT SECTIONS (info below tool)
   ============================================ */
.info-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.info-header svg,
.info-header i {
    width: 24px;
    height: 24px;
    color: var(--ev-primary);
    flex-shrink: 0;
}

.info-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* Steps */
.steps-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.step-item {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    position: relative;
}

.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 19px;
    top: 56px;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.step-number {
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: var(--ev-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    z-index: 1;
}

.step-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.step-content p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.step-content a {
    color: var(--ev-primary);
    text-decoration: none;
}

.step-content a:hover {
    text-decoration: underline;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.feature-item {
    padding: 20px;
    background: var(--card-secondary);
    border-radius: var(--ev-radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--ev-transition);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--ev-primary);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--ev-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.feature-icon svg,
.feature-icon i {
    width: 24px;
    height: 24px;
}

.feature-icon.green {
    background: rgba(51, 153, 102, 0.1);
    color: var(--color-green);
}

.feature-icon.blue {
    background: rgba(51, 153, 204, 0.1);
    color: var(--color-blue);
}

.feature-icon.purple {
    background: rgba(155, 89, 182, 0.1);
    color: #9b59b6;
}

[data-theme="dark"] .feature-icon.purple {
    color: #a78bfa;
}

.feature-icon.orange {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
}

[data-theme="dark"] .feature-icon.orange {
    color: #fb923c;
}

.feature-item h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.6;
}

.feature-item a {
    color: var(--ev-primary);
    text-decoration: none;
}

.feature-item a:hover {
    text-decoration: underline;
}

/* Format Badges */
.format-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.format-badge {
    padding: 6px 14px;
    border-radius: var(--ev-radius);
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--card-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.format-badge.xlsx {
    background: rgba(var(--ev-primary-rgb), 0.1);
    color: var(--ev-primary);
    border-color: rgba(var(--ev-primary-rgb), 0.2);
}

.format-badge.xls {
    background: rgba(51, 153, 204, 0.1);
    color: var(--color-blue);
    border-color: rgba(51, 153, 204, 0.2);
}

.format-badge.feature {
    background: var(--card-secondary);
    color: var(--text-muted);
}

/* ============================================
   FAQ
   ============================================ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--card-secondary);
    border-radius: var(--ev-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 18px 20px;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    transition: background var(--ev-transition);
    font-family: inherit;
}

.faq-question:hover {
    background: var(--card-tertiary);
}

.faq-question .chevron {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: transform var(--ev-transition);
    flex-shrink: 0;
}

.faq-item.active .faq-question .chevron {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 20px 18px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer a {
    color: var(--ev-primary);
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* ============================================
   CELL TOOLTIP
   ============================================ */
.cell-tooltip {
    position: fixed;
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: var(--ev-radius);
    font-size: 0.85rem;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    z-index: 10000;
    pointer-events: none;
    word-break: break-word;
    white-space: normal;
    line-height: 1.5;
}

/* ============================================
   FULLSCREEN OVERLAY
   ============================================ */
.fullscreen-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--card-bg);
    z-index: 9999;
    display: none;
    flex-direction: column;
}

.fullscreen-overlay.active {
    display: flex;
}

.fullscreen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background: var(--card-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.fullscreen-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin: 0;
}

.fullscreen-title svg,
.fullscreen-title i {
    color: var(--ev-primary);
    width: 24px;
    height: 24px;
}

.fullscreen-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 15px;
    border-right: 1px solid var(--border-color);
}

.zoom-level {
    font-size: 0.9rem;
    color: var(--text-secondary);
    min-width: 50px;
    text-align: center;
}

.fullscreen-content {
    flex: 1;
    overflow: auto;
    padding: 20px;
}

/* ============================================
   COPY SUCCESS NOTIFICATION
   ============================================ */
.copy-success {
    position: fixed;
    bottom: 80px;
    right: 24px;
    background: var(--ev-primary);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--ev-radius);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    animation: ev-slideIn 0.3s ease;
    font-size: 0.9rem;
}

@keyframes ev-slideIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .tool-header,
    .file-info-bar,
    .options-bar,
    .toolbar,
    .stats-bar,
    .action-bar,
    .related-tools,
    .content-row-2 {
        display: none !important;
    }

    .content-area {
        max-height: none;
        overflow: visible;
    }

    .excel-table {
        font-size: 10pt;
    }

    .excel-table th,
    .excel-table td {
        padding: 5px 8px;
        border-color: #000;
    }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .tool-container {
        padding: 20px 15px;
    }

    .tool-header h1 {
        font-size: 1.8rem;
    }

    .tool-description {
        font-size: 1rem;
    }

    .upload-area {
        padding: 40px 20px;
    }

    .file-info-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .options-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .toolbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .toolbar-left,
    .toolbar-right {
        width: 100%;
        flex-wrap: wrap;
    }

    .view-toggle {
        width: 100%;
    }

    .view-btn {
        flex: 1;
        justify-content: center;
    }

    .action-bar {
        flex-direction: column;
    }

    .action-bar .btn {
        width: 100%;
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}

@media (max-width: 480px) {
    .tool-title-row {
        flex-direction: column;
        gap: 10px;
    }

    .tool-header h1 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 10px 14px;
        font-size: 0.85rem;
    }

    .stats-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .format-badges {
        gap: 6px;
    }

    .format-badge {
        padding: 4px 10px;
        font-size: 0.8rem;
    }
}