.tool-page {
    min-height: 100vh;
    padding-top: 80px;
    overflow: hidden;
    height: 100vh;
}

.tool-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--container-padding);
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--spacing-2xl);
    height: calc(100vh - 80px);
    align-items: start;
}

.tool-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    scrollbar-width: thin;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.tool-card:hover {
    box-shadow: var(--shadow-md);
}

.tool-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.tool-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius-lg);
    color: var(--accent-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tool-card-title {
    flex: 1;
    min-width: 0;
}

.tool-card-title h1 {
    font-size: var(--text-xl);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tool-card-title p {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin: 0;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--glass-bg);
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-color), var(--cta-color));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.drop-zone:hover::before,
.drop-zone.drag-over::before {
    opacity: 0.05;
}

.drop-zone-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.drop-zone-text {
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.drop-zone-text h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xs);
    color: var(--text-main);
}

.drop-zone-text p {
    color: var(--text-sub);
    font-size: var(--text-sm);
    margin: 0;
}

.drop-zone-formats {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.file-input {
    display: none;
}

.selected-file {
    display: none;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.selected-file.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.file-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius-md);
    color: var(--accent-color);
    font-size: 1.25rem;
    flex-shrink: 0;
}

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

.file-name {
    font-weight: var(--font-medium);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.file-remove {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.file-remove:hover {
    background: rgba(239, 69, 101, 0.1);
    color: #EF4565;
}

.tool-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: 1.5rem;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-main);
}

.control-input {
    width: 100%;
}

.range-slider {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    margin-top: 0.25rem;
}

.range-slider::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--accent-color) 0%, var(--border-color) 100%);
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    margin-top: -7px;
    border: 2px solid #fff;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 6px rgba(127, 90, 240, 0.15), var(--shadow-glow);
}

.range-slider::-moz-range-track {
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--border-color);
}

.range-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: var(--shadow-md);
}

.range-slider::-moz-range-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 6px rgba(127, 90, 240, 0.15);
}

.range-slider:focus {
    outline: none;
}

.range-slider:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 4px rgba(127, 90, 240, 0.2), var(--shadow-md);
}

.range-value {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-light);
    color: var(--accent-color);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-left: var(--spacing-sm);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

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

.progress-container {
    display: none;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border-radius: var(--radius-md);
}

.progress-container.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--cta-color));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
    width: 0%;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 1.5s ease infinite;
}

@keyframes shimmer {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(100%);
    }
}

.progress-text {
    text-align: center;
    margin-top: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--text-sub);
}

.tool-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 100%;
    min-width: 0;
    overflow-x: hidden;
    overflow-y: auto;
    max-height: calc(100vh - 80px - var(--spacing-2xl) - var(--spacing-2xl));
    scrollbar-width: thin;
}

.output-area {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    min-height: 450px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    overflow-x: hidden;
    overflow-y: auto;
}

/* ── Responsive Preview Container ── */
.responsive-preview-container {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: auto;
    max-height: 50vh;
}

/* ── Scrollable preview inner containers ── */
#previewArea,
.pdf-preview,
.csv-preview-container {
    max-width: 100%;
    overflow-x: auto;
}

#previewArea .card,
#previewArea .glass-card {
    max-width: 100%;
    overflow: hidden;
}

/* ── Media containment inside preview areas ── */
.output-area canvas,
.output-area video,
.output-area img,
.pdf-preview canvas,
.pdf-preview video,
.pdf-preview img,
.responsive-preview-container canvas,
.responsive-preview-container video,
.responsive-preview-container img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.output-placeholder {
    text-align: center;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.output-placeholder i {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.3;
}

.output-placeholder h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-sub);
}

.output-placeholder p {
    font-size: var(--text-sm);
    margin: 0;
}

.seo-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
}

.seo-content h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--accent-color);
}

.seo-content h3 {
    font-size: var(--text-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.seo-content h4 {
    font-size: var(--text-lg);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.seo-content p {
    line-height: var(--leading-relaxed);
    margin-bottom: var(--spacing-md);
}

.seo-content ul {
    margin-left: 0;
    margin-bottom: var(--spacing-md);
    list-style: none;
}

.seo-content ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.seo-content li {
    margin-bottom: var(--spacing-sm);
    line-height: var(--leading-relaxed);
}

.seo-content ul li {
    position: relative;
    padding-left: 1.75rem;
}

.seo-content ul li::before {
    content: '\f058';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 3px;
    color: var(--accent-color);
    font-size: 1rem;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.feature-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.feature-item i {
    color: var(--cta-color);
    font-size: 1.25rem;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.faq-section {
    margin-top: var(--spacing-2xl);
}

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    background: transparent;
    border: none;
    text-align: left;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-base);
}

.faq-question:hover {
    color: var(--accent-color);
}

.faq-question i {
    transition: transform var(--transition-base);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-sub);
    line-height: var(--leading-relaxed);
}

.success-message {
    padding: var(--spacing-md);
    background: rgba(44, 182, 125, 0.1);
    border: 1px solid var(--cta-color);
    border-radius: var(--radius-md);
    color: var(--cta-color);
    margin-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.error-message {
    padding: var(--spacing-md);
    background: rgba(239, 69, 101, 0.1);
    border: 1px solid #EF4565;
    border-radius: var(--radius-md);
    color: #EF4565;
    margin-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

@media (max-width: 1023px) {
    .tool-page {
        overflow: auto;
        height: auto;
    }

    .tool-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        height: auto;
    }

    .tool-sidebar {
        order: -1 !important;
        position: static;
        max-height: none;
        overflow-y: visible;
    }

    .tool-content {
        order: 2 !important;
        overflow-y: visible;
        max-height: none;
    }

    
    .ad-sidebar-bottom {
        display: none;
    }
}

@media (max-width: 767px) {
    .tool-page {
        padding-top: 60px;
        overflow-x: hidden;
        overflow-y: auto;
        height: auto;
    }

    .tool-container {
        padding: var(--spacing-sm) var(--container-padding);
        gap: var(--spacing-md);
        grid-template-columns: 1fr;
        overflow-x: hidden;
    }

    .tool-card {
        padding: 16px;
    }

    .tool-card-header {
        flex-wrap: nowrap;
        gap: var(--spacing-sm);
    }

    .tool-icon {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }

    .tool-card-title h1 {
        font-size: 1.1rem;
    }

    .tool-card-title p {
        font-size: 0.75rem;
    }

    .drop-zone {
        padding: 24px 16px;
    }

    .drop-zone-icon {
        font-size: 2rem;
    }

    .drop-zone-text h3 {
        font-size: 1rem;
    }

    .drop-zone-text p {
        font-size: 0.8rem;
    }

    .drop-zone-formats {
        font-size: 0.7rem;
    }

    .output-area {
        min-height: 250px;
        padding: var(--spacing-md);
        max-width: 100%;
        overflow-x: hidden;
        overflow-y: auto;
    }

    .output-area canvas,
    .output-area video,
    .output-area img {
        max-width: 100%;
        height: auto;
        object-fit: contain;
    }

    .responsive-preview-container {
        max-height: 350px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .output-placeholder i {
        font-size: 2.5rem;
    }

    .output-placeholder h3 {
        font-size: 1.1rem;
    }

    .output-placeholder p {
        font-size: 0.8rem;
    }

    /* Stat cards responsive grid */
    .output-area .stat-card {
        padding: 12px;
    }

    .output-area [style*="grid-template-columns"] {
        grid-template-columns: 1fr 1fr !important;
        gap: 8px !important;
    }

    .seo-content {
        padding: var(--spacing-md);
    }

    .seo-content h2 {
        font-size: 1.2rem;
    }

    .seo-content h3 {
        font-size: 1rem;
    }

    .seo-content h4 {
        font-size: 0.9rem;
    }

    .seo-content p,
    .seo-content li {
        font-size: 0.875rem;
    }

    .features-list {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .feature-item {
        padding: 10px;
    }

    /* Buttons — ensure minimum touch target */
    .action-buttons .btn {
        min-height: 44px;
        font-size: 0.9rem;
    }

    .action-buttons {
        position: sticky;
        bottom: calc(70px + env(safe-area-inset-bottom));
        background: var(--card-bg);
        padding: var(--spacing-sm) var(--spacing-md);
        margin: var(--spacing-md) calc(-1 * 16px);
        border-top: 1px solid var(--border-color);
        border-radius: 0;
        z-index: 10;
    }

    /* Form controls */
    .form-control,
    .control-group select,
    .control-group input[type="text"],
    .control-group input[type="password"],
    .control-group input[type="number"] {
        min-height: 44px;
        font-size: 0.9rem;
    }

    /* FAQ touch targets */
    .faq-question {
        padding: var(--spacing-md);
        min-height: 44px;
        font-size: 0.9rem;
    }

    .faq-answer-content {
        font-size: 0.85rem;
        padding: 0 var(--spacing-md) var(--spacing-md);
    }
}

.skip-to-main {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--accent-color);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 9999;
    transition: top var(--transition-base);
}

.skip-to-main:focus {
    top: 0;
}

.back-to-top {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-hover);
    transform: translateY(-4px);
}

@media (min-width: 1024px) {
    .back-to-top {
        bottom: 30px;
    }
}