.spacepdf-merge-app {
    font-family: "Poppins", sans-serif;
    text-align: center;
    margin: 0;
    user-select: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    box-sizing: border-box;
    padding-top: 2rem;
    padding-bottom: 2rem;
}

html {
    background-image: url(https://spacepdf.com/wp-content/uploads/2025/06/Minimal-Starry-Black-Background.webp);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    min-height: 100%;
}

body {
    margin: 0;
    font-family: "Poppins", sans-serif;
}

.spacepdf-merge-app .initial-spinner-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: #ccc;
}

.spacepdf-merge-app .initial-spinner-wrapper p {
    margin-top: 1rem;
    font-size: 1rem;
}

.spacepdf-merge-app .space-intro {
    text-align: center;
    margin-bottom: 2rem;
    color: #ffffff;
    max-width: 800px;
    transition: opacity 0.5s ease-out, transform 0.5s ease-out, max-height 0.5s ease-out, margin-bottom 0.5s ease-out;
    font-family: "Poppins", sans-serif;
}

.spacepdf-merge-app .space-intro.hidden {
    opacity: 0;
    transform: translateY(-20px);
    max-height: 0;
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
}

.spacepdf-merge-app .space-intro h1 {
    font-size: 2.5rem;
    color: #ffffff;
    font-family: "Poppins", sans-serif;
    font-weight: 800;
    animation: swipeUp 0.8s ease-out;
}

.spacepdf-merge-app .space-intro p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 500;
    font-family: "Poppins", sans-serif;
    animation: swipeUp 0.8s ease-out 0.2s both;
}

@keyframes swipeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.spacepdf-merge-app .Space-Container {
    background: linear-gradient(to bottom, rgb(0, 0, 20), rgb(20, 30, 60));
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 600px;
    border: 1px solid rgb(126, 126, 126);
    text-align: center;
    transition: width 0.4s ease, height 0.4s ease, opacity 0.3s ease, transform 0.4s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: auto;
    min-height: 350px;
    max-height: calc(100vh - 160px);
    margin: 0 auto;
    color: #ccc;
}

.spacepdf-merge-app .Space-Container.merge-mode {
    max-height: 600px;
    max-width: 1500px;
    width: 90vw;
}

@media (max-width: 768px) {

    /* Make the main container more mobile-friendly */
    .spacepdf-merge-app .Space-Container,
    .spacepdf-merge-app .Space-Container.merge-mode {
        width: 90%;
        max-width: 95%;
        padding: 15px;
        min-height: auto;
        max-height: calc(100vh - 100px);
        /* Give more vertical space */
    }

    /* Reposition the back button on mobile */
    .spacepdf-merge-app .result-content {
        /* Switch to Flexbox to control alignment of individual items */
        display: flex;
        flex-direction: column;
        align-items: center;
        /* Center items horizontally */
    }

    .spacepdf-merge-app .back-to-files-btn {
        position: static;
        /* Remove absolute positioning */
        align-self: flex-start;
        /* Align this item to the left */
        margin-bottom: 1rem;
        /* Add space below the button */
        font-size: 1.25rem;
    }
}

.spacepdf-merge-app #initialContent {
    width: 100%;
}

.spacepdf-merge-app #initialContent h2,
.spacepdf-merge-app #initialContent p:not(#uploadSection p) {
    color: #eee;
}

.spacepdf-merge-app #initialContent p:not(#uploadSection p) {
    margin-bottom: 20px;
}

.spacepdf-merge-app .files-container {
    width: 100%;
    margin: 0 auto;
    margin-top: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    max-height: 500px;
    overflow-y: auto;
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
    position: relative;
    flex: 1;
    z-index: 1;
}

.spacepdf-merge-app .files-container.is-hiding,
.spacepdf-merge-app .action-buttons.is-hiding {
    opacity: 0;
    transform: translateY(-20px);
}

.spacepdf-merge-app .files-container::-webkit-scrollbar {
    width: 8px;
}

.spacepdf-merge-app .files-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.spacepdf-merge-app .files-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.spacepdf-merge-app .files-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.spacepdf-merge-app .files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    padding: 0.5rem;
    position: relative;
    z-index: 0;
    justify-content: center;
    /* <-- ADD THIS LINE */
}

.spacepdf-merge-app .file-preview {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 1rem;
    position: relative;
    height: auto;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
    z-index: 2;
    cursor: grab;
    pointer-events: auto !important;
}

.spacepdf-merge-app .file-preview.dragging {
    opacity: 0.9;
    transform: scale(0.95);
    box-shadow: 0 0 20px rgba(74, 144, 226, 0.7);
    cursor: grabbing;
    z-index: 10;
    background: rgba(74, 144, 226, 0.2);
    border: 2px solid rgba(74, 144, 226, 0.8);
}

.spacepdf-merge-app .file-preview.drag-over {
    border: 2px dashed #4a90e2;
    background: rgba(74, 144, 226, 0.2);
    transform: scale(1.02);
    box-shadow: 0 0 15px rgba(74, 144, 226, 0.6);
}

.spacepdf-merge-app .file-preview * {
    pointer-events: auto !important;
}

.spacepdf-merge-app .highlight-child {
    pointer-events: auto !important;
    z-index: 5;
}

.spacepdf-merge-app .file-preview.drag-over::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(74, 144, 226, 0.15);
    border-radius: 8px;
    z-index: 1;
    pointer-events: none;
}

.spacepdf-merge-app .file-preview.dragging::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 8px;
    box-shadow: 0 0 15px 5px rgba(74, 144, 226, 0.5);
    animation: pulse-highlight 1.5s infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes pulse-highlight {
    0% {
        opacity: 0.6;
        box-shadow: 0 0 15px 5px rgba(74, 144, 226, 0.5);
    }

    50% {
        opacity: 1;
        box-shadow: 0 0 20px 8px rgba(74, 144, 226, 0.7);
    }

    100% {
        opacity: 0.6;
        box-shadow: 0 0 15px 5px rgba(74, 144, 226, 0.5);
    }
}

.spacepdf-merge-app .reorder-handle {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    background: rgba(74, 144, 226, 0.8);
    color: white;
    border: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    cursor: grab;
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s ease-in-out;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3;
    opacity: 0.7;
    padding: 0;
}

.spacepdf-merge-app .file-preview:hover .reorder-handle {
    opacity: 1;
    transform: scale(1.1);
}

.spacepdf-merge-app .reorder-handle:hover {
    background: rgba(74, 144, 226, 1);
}

.spacepdf-merge-app .reorder-handle i {
    font-size: 0.8rem;
    color: #fff;
}

.spacepdf-merge-app .reorder-handle .custom-tooltip {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-10%) translateY(5px);
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 5px;
    white-space: nowrap;
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

.spacepdf-merge-app .reorder-handle:hover .custom-tooltip {
    visibility: visible;
    opacity: 1;
    transform: translateX(-10%) translateY(10px);
}

@media (max-width: 768px) {
    .spacepdf-merge-app .reorder-handle {
        width: 32px;
        height: 32px;
        background: rgba(74, 144, 226, 1);
        opacity: 0.9;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    }

    .spacepdf-merge-app .reorder-handle i {
        font-size: 1rem;
    }

    .spacepdf-merge-app .file-preview .reorder-handle {
        opacity: 0.9;
    }
}

@media (max-width: 768px) {
    .spacepdf-merge-app .reorder-handle {
        width: 100px;
        height: 30px;
    }

    .spacepdf-merge-app .reorder-handle i {
        font-size: 1rem;
    }

    .spacepdf-merge-app .custom-tooltip {
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: normal;
        word-wrap: break-word;
    }

    .spacepdf-merge-app .reorder-hint {
        font-size: 0.8rem;
        padding: 6px;
    }

    .spacepdf-merge-app .duplicate-file {
        right: calc(0.5rem + 25px + 0.6rem + 25px + 0.6rem);
    }
}

@media (max-width: 480px) {
    .spacepdf-merge-app .reorder-hint {
        max-width: 90%;
        font-size: 0.75rem;
    }
}

.spacepdf-merge-app .preview-image {
    width: 100%;
    height: 150px;
    object-fit: contain;
    margin-bottom: 0.5rem;
    user-select: none;
    pointer-events: auto;
    -webkit-user-drag: none;
    cursor: default;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.spacepdf-merge-app .files-grid.dragging-active * {
    pointer-events: auto !important;
}

.spacepdf-merge-app .page-count {
    position: absolute;
    bottom: 6px;
    right: 6px;
    background: rgba(74, 144, 226, 0.9);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    gap: 4px;
    backdrop-filter: blur(4px);
    z-index: 2;
    pointer-events: none;
    cursor: pointer;
}

.spacepdf-merge-app .page-count.truncated {
    pointer-events: auto;
    cursor: pointer;
}

.spacepdf-merge-app .page-count i {
    font-size: 0.55rem;
}

.spacepdf-merge-app .page-count .page-tooltip {
    position: absolute;
    bottom: 100%;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 4px 8px;
    font-size: 0.75rem;
    border-radius: 5px;
    white-space: nowrap;
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    transform: translateY(5px);
    pointer-events: none;
    margin-bottom: 5px;
}

.spacepdf-merge-app .page-count.truncated:hover .page-tooltip,
.spacepdf-merge-app .page-count.truncated.show-tooltip .page-tooltip {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .spacepdf-merge-app .page-count.truncated .page-tooltip {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
}

.spacepdf-merge-app .action-buttons {
    display: none;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 1rem;
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.spacepdf-merge-app .add-more-btn,
.spacepdf-merge-app .merge-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: #4a90e2;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    min-width: 150px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.spacepdf-merge-app .add-more-btn i,
.spacepdf-merge-app .merge-btn i {
    font-size: 1rem;
    margin: 0;
    position: relative;
    z-index: 1;
    color: #ffffff;
}

.spacepdf-merge-app .add-more-btn:hover,
.spacepdf-merge-app .merge-btn:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(74, 144, 226, 0.3);
}

.spacepdf-merge-app .error-message {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: #ef4444;
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    z-index: 2000;
    animation: slideUp 0.3s ease;
    display: none;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

@keyframes slideUp {
    from {
        transform: translate(-50%, 100%);
        opacity: 0;
    }

    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .spacepdf-merge-app .error-message {
        bottom: 2rem;
        top: auto;
        width: 90%;
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}

.spacepdf-merge-app .loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 3000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.spacepdf-merge-app .loading-overlay.show {
    opacity: 1;
    display: flex;
}

.spacepdf-merge-app .loading-content {
    text-align: center;
}

.spacepdf-merge-app .loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(74, 144, 226, 0.1);
    border-radius: 50%;
    border-top-color: #4a90e2;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.spacepdf-merge-app .loading-text {
    color: #ffffff;
    font-size: 1rem;
    margin-top: 1rem;
}

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

.spacepdf-merge-app #uploadSection {
    border: 2px dashed #ccc;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease-in-out;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    margin-top: 20px;
    cursor: pointer;
}

.spacepdf-merge-app #uploadSection.drag-over {
    background: rgba(33, 150, 243, 0.1);
    border-color: #2196F3;
}

.spacepdf-merge-app #uploadSection p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 10px;
}

.spacepdf-merge-app #selectBtn,
.spacepdf-merge-app .download-btn,
.spacepdf-merge-app .new-merge-btn {
    font-family: "IBM Plex Sans", sans-serif;
    background: linear-gradient(90deg, #1e90ff, #00bfff);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.4s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    outline: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0.5rem;
    text-decoration: none;
    min-width: 130px;
    text-align: center;
}

.spacepdf-merge-app #selectBtn:hover,
.spacepdf-merge-app .download-btn:hover,
.spacepdf-merge-app .new-merge-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.spacepdf-merge-app #selectBtn:active,
.spacepdf-merge-app .download-btn:active,
.spacepdf-merge-app .new-merge-btn:active {
    transform: scale(0.98);
}

.spacepdf-merge-app .file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-bottom: 24px;
    /* Add this to create space for the page count badge */
}

.spacepdf-merge-app .file-name {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: all 0.2s ease-in-out;
}

.spacepdf-merge-app .files-grid.show-full-filenames .file-name {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    word-wrap: break-word;
}

.spacepdf-merge-app .file-size {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

.spacepdf-merge-app .remove-file,
.spacepdf-merge-app .duplicate-file {
    position: absolute;
    top: 0.5rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    cursor: pointer;
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s ease-in-out;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3;
    opacity: 0.7;
    padding: 0;
}

.spacepdf-merge-app .file-preview:hover .remove-file,
.spacepdf-merge-app .file-preview:hover .duplicate-file {
    opacity: 1;
    transform: scale(1.1);
}

.spacepdf-merge-app .remove-file {
    right: 0.5rem;
    background: rgba(255, 0, 0, 0.8);
}

.spacepdf-merge-app .remove-file:hover {
    background: rgba(255, 0, 0, 1);
}

.spacepdf-merge-app .duplicate-file {
    right: calc(0.5rem + 25px + 0.6rem);
    background: #007BFF;
}

.spacepdf-merge-app .duplicate-file:hover {
    background: #0056b3;
}

.spacepdf-merge-app .remove-file i,
.spacepdf-merge-app .duplicate-file i {
    font-size: 0.8rem;
    color: #fff;
}

.spacepdf-merge-app .custom-tooltip {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 5px;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
    box-sizing: border-box;
    z-index: 100;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

.spacepdf-merge-app .remove-file:hover .custom-tooltip,
.spacepdf-merge-app .duplicate-file:hover .custom-tooltip {
    visibility: visible;
    opacity: 1;
    transform: translateY(10px);
}

.spacepdf-merge-app .remove-file .custom-tooltip,
.spacepdf-merge-app .duplicate-file .custom-tooltip {
    left: auto;
    right: 0;
    transform: translateY(5px);
}

.spacepdf-merge-app .result-container {
    text-align: center;
    opacity: 0;
    display: none;
    transform: translateY(20px);
    transition: all 0.5s ease;
    width: 100%;
    max-width: 100%;
}

.spacepdf-merge-app .result-container.show {
    opacity: 1;
    transform: translateY(0);
    display: block;
}

.spacepdf-merge-app .result-content {
    position: relative;
    display: grid;
    place-items: center;
    width: 100%;
}

.spacepdf-merge-app .back-to-files-btn {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: transparent;
    border: none;
    color: #ccc;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.2s ease, transform 0.2s ease;
    z-index: 10;
}

.spacepdf-merge-app .back-to-files-btn:hover {
    color: #fff;
    transform: scale(1.1);
}

.spacepdf-merge-app .result-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    width: 100%;
    flex-wrap: wrap;
}

.spacepdf-merge-app .result-buttons .download-btn,
.spacepdf-merge-app .result-buttons .new-merge-btn {
    min-width: 180px;
    white-space: nowrap;
    color: #ffffff;
}

.spacepdf-merge-app .result-buttons .download-btn {
    min-width: 220px;
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(90deg, #1e90ff, #00bfff, #1e90ff);
    background-size: 200% 100%;
    animation: gradient-shift 3s ease infinite, shine-effect 3s infinite;
    font-weight: 700;
    padding: 16px 28px;
    box-shadow: 0 8px 15px rgba(30, 144, 255, 0.3);
}

@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes shine-effect {
    0% {
        box-shadow: 0 8px 15px rgba(30, 144, 255, 0.3);
    }

    50% {
        box-shadow: 0 8px 25px rgba(30, 144, 255, 0.6);
    }

    100% {
        box-shadow: 0 8px 15px rgba(30, 144, 255, 0.3);
    }
}

.spacepdf-merge-app .result-buttons .download-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0) 100%);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        left: -50%;
        opacity: 0;
    }

    10% {
        opacity: 0.3;
    }

    20% {
        left: 120%;
        opacity: 0;
    }

    100% {
        left: 120%;
        opacity: 0;
    }
}

.spacepdf-merge-app .result-buttons .download-btn i,
.spacepdf-merge-app .result-buttons .new-merge-btn i {
    color: #ffffff;
}

@media (max-width: 768px) {
    .spacepdf-merge-app .result-buttons .download-btn {
        width: 100%;
        max-width: 280px;
        font-size: 1.05rem;
        padding: 14px 20px;
    }
}

.spacepdf-merge-app .result-container i.fa-check-circle {
    font-size: 3rem;
    color: #4CAF50;
    margin-bottom: 1rem;
    animation: tickAnimation 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.spacepdf-merge-app .result-container h2 {
    margin-bottom: 2rem;
    color: #ffffff;
}

@keyframes tickAnimation {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }

    20% {
        transform: scale(1.2) rotate(0deg);
        opacity: 0.8;
    }

    40% {
        transform: scale(0.9) rotate(15deg);
        opacity: 1;
    }

    60% {
        transform: scale(1.1) rotate(-10deg);
    }

    80% {
        transform: scale(0.95) rotate(5deg);
    }

    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.spacepdf-merge-app .file-preview.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.spacepdf-merge-app .file-options-toolbar {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 0 0.5rem 1rem 0.5rem;
    margin-top: 10px;
}

.spacepdf-merge-app .toggle-switch {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    gap: 10px;
}

.spacepdf-merge-app .toggle-label-text {
    font-size: 0.9rem;
    color: #ccc;
    user-select: none;
}

.spacepdf-merge-app .toggle-switch-checkbox {
    display: none;
}

.spacepdf-merge-app .toggle-switch-label {
    position: relative;
    display: block;
    width: 44px;
    height: 24px;
    background-color: #333;
    border-radius: 12px;
    transition: background-color 0.2s ease-in-out;
}

.spacepdf-merge-app .toggle-switch-inner {
    display: block;
}

.spacepdf-merge-app .toggle-switch-switch {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border-radius: 50%;
    transition: transform 0.2s ease-in-out;
}

.spacepdf-merge-app .toggle-switch-checkbox:checked+.toggle-switch-label {
    background-color: #4a90e2;
}

.spacepdf-merge-app .toggle-switch-checkbox:checked+.toggle-switch-label .toggle-switch-switch {
    transform: translateX(20px);
}

.spacepdf-merge-app .toggle-label-text {
    margin-left: 10px;
    font-size: 0.9rem;
    color: #ccc;
}

@media (max-width: 768px) {

    .spacepdf-merge-app .select-btn,
    .spacepdf-merge-app .download-btn,
    .spacepdf-merge-app .new-merge-btn,
    .spacepdf-merge-app .add-more-btn,
    .spacepdf-merge-app .merge-btn {
        font-size: 0.9rem;
        padding: 0.7rem 1.2rem;
        min-width: auto;
        width: auto;
        max-width: 90%;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 480px) {

    .spacepdf-merge-app .select-btn,
    .spacepdf-merge-app .download-btn,
    .spacepdf-merge-app .new-merge-btn,
    .spacepdf-merge-app .add-more-btn,
    .spacepdf-merge-app .merge-btn {
        font-size: 0.70rem;
        padding: 0.6rem 1rem;
        gap: 0.4rem;
        width: 100%;
        max-width: 280px;
        margin-top: 0.4rem;
        margin-bottom: 0.4rem;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .spacepdf-merge-app .Space-Container.merge-mode {
        transform: translateX(0%);
    }

    .spacepdf-merge-app body {
        padding: 0;
    }

    .spacepdf-merge-app .site-header-custom {
        padding: 0 10px;
        height: 60px;
        width: 100%;
        left: 0;
        right: 0;
        margin: 0;
        position: fixed;
    }

    .spacepdf-merge-app .space-intro h1 {
        font-size: 2rem;
    }

    .spacepdf-merge-app .space-intro p {
        font-size: 1rem;
        padding: 0 0.5rem;
    }

    .spacepdf-merge-app .container {
        width: 95%;
        transform: none !important;
        height: auto;
        min-height: 300px;
        padding: 15px;
        justify-content: center;
    }

    .spacepdf-merge-app .container.merge-mode {
        transform: none !important;
        max-height: 640px;
        margin-top: 0%;
        justify-content: flex-start;
    }

    .spacepdf-merge-app .files-container {
        max-height: 600px;
    }

    .spacepdf-merge-app .file-options-toolbar {
        padding: 0 0 0.8rem 0;
    }

    .spacepdf-merge-app .files-grid {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        padding: 0.5rem 0;
    }

    .spacepdf-merge-app .file-preview {
        width: 100%;
        max-width: 320px;
        height: auto;
        min-height: 200px;
        touch-action: pan-y;
    }

    .spacepdf-merge-app .preview-image {
        height: 140px;
    }

    .spacepdf-merge-app .action-buttons {
        flex-direction: column;
        gap: 0.8rem;
        width: 100%;
        max-width: 300px;
        margin-left: auto;
        margin-right: auto;
        padding: 1rem 0;
    }

    .spacepdf-merge-app .action-buttons .add-more-btn,
    .spacepdf-merge-app .action-buttons .merge-btn {
        width: 100%;
    }

    .spacepdf-merge-app .upload-area {
        padding: 2.5rem 1.5rem;
    }

    .spacepdf-merge-app .upload-area i {
        font-size: 2.8rem;
    }

    .spacepdf-merge-app .upload-area h2 {
        font-size: 1.4rem;
    }

    .spacepdf-merge-app .result-container i.fa-check-circle {
        font-size: 2.5rem;
    }

    .spacepdf-merge-app .result-container h2 {
        font-size: 1.5rem;
    }

    .spacepdf-merge-app .error-message {
        width: 90%;
        font-size: 12px;
        padding: 8px 16px;
        bottom: 16px;
        gap: 6px;
    }

    .spacepdf-merge-app .page-count {
        font-size: 0.7rem;
        padding: 3px 7px;
    }

    .spacepdf-merge-app .custom-tooltip {
        font-size: 0.75rem;
        padding: 5px 10px;
        max-width: auto;
    }

    .spacepdf-merge-app .remove-file,
    .spacepdf-merge-app .duplicate-file,
    .spacepdf-merge-app .reorder-handle {
        width: 28px;
        height: 28px;
    }

    .spacepdf-merge-app .remove-file i,
    .spacepdf-merge-app .duplicate-file i,
    .spacepdf-merge-app .reorder-handle i {
        font-size: 0.9rem;
    }

    .spacepdf-merge-app .duplicate-file {
        right: calc(0.5rem + 28px + 0.7rem);
    }

    .spacepdf-merge-app .file-preview.dragging {
        opacity: 0.95;
        background: rgba(74, 144, 226, 0.3);
    }
}

@media (max-width: 480px) {
    .spacepdf-merge-app .space-intro h1 {
        font-size: 1.8rem;
    }

    .spacepdf-merge-app .space-intro p {
        font-size: 0.9rem;
    }

    .spacepdf-merge-app .container {
        padding: 10px;
    }

    .spacepdf-merge-app .file-preview {
        max-width: 280px;
    }

    .spacepdf-merge-app .preview-image {
        height: 120px;
    }

    .spacepdf-merge-app .page-count {
        font-size: 0.65rem;
        padding: 2px 5px;
    }

    .spacepdf-merge-app .upload-area {
        padding: 2rem 1rem;
    }

    .spacepdf-merge-app .upload-area .select-btn {
        width: 80%;
        max-width: 240px;
        padding: 0.7rem 1rem;
    }

    .spacepdf-merge-app .result-buttons {
        flex-direction: column;
        gap: 0.8rem;
    }

    .spacepdf-merge-app .result-buttons .download-btn,
    .spacepdf-merge-app .result-buttons .new-merge-btn {
        width: 80%;
        max-width: 260px;
        padding: 0.7rem 0;
    }

    .spacepdf-merge-app .result-buttons .download-btn {
        order: 1;
    }

    .spacepdf-merge-app .result-buttons .new-merge-btn {
        order: 2;
    }

    .spacepdf-merge-app .remove-file,
    .spacepdf-merge-app .duplicate-file {
        width: 26px;
        height: 26px;
        top: 0.4rem;
    }

    .spacepdf-merge-app .remove-file i,
    .spacepdf-merge-app .duplicate-file i {
        font-size: 0.8rem;
    }

    .spacepdf-merge-app .remove-file {
        right: 0.4rem;
    }

    .spacepdf-merge-app .duplicate-file {
        right: calc(0.4rem + 26px + 0.5rem);
    }

    .spacepdf-merge-app .custom-tooltip {
        font-size: 0.7rem;
        padding: 4px 8px;
        max-width: 120px;
    }

    .spacepdf-merge-app .error-message {
        width: 90%;
        font-size: 11px;
        padding: 6px 12px;
        bottom: 16px;
        gap: 4px;
    }
}

.spacepdf-merge-app * {
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.spacepdf-merge-app button,
.spacepdf-merge-app a,
.spacepdf-merge-app input,
.spacepdf-merge-app textarea,
.spacepdf-merge-app select {
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.spacepdf-merge-app *:focus {
    outline: none !important;
    box-shadow: none !important;
}

.spacepdf-merge-app #confirmationPopup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 5000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.spacepdf-merge-app #confirmationPopup.visible {
    opacity: 1;
    pointer-events: auto;
}

.spacepdf-merge-app .confirmation-popup-content {
    background: linear-gradient(to bottom, rgb(20, 30, 60), rgb(0, 0, 20));
    color: #eee;
    padding: 25px 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    border: 1px solid rgb(126, 126, 126);
    transform: scale(0.9);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.2s ease-out;
}

.spacepdf-merge-app #confirmationPopup.visible .confirmation-popup-content {
    transform: scale(1);
    opacity: 1;
}

.spacepdf-merge-app .confirmation-popup-content h3 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.5rem;
    color: #4a90e2;
}

.spacepdf-merge-app .confirmation-popup-content p {
    margin-bottom: 25px;
    font-size: 1rem;
    line-height: 1.6;
}

.spacepdf-merge-app .confirmation-buttons {
    display: flex;
    justify-content: space-around;
    gap: 15px;
}

.spacepdf-merge-app .confirmation-buttons button {
    font-family: 'IBM Plex Sans';
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 0.9rem;
    min-width: 100px;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s, transform 0.2s;
}

.spacepdf-merge-app .confirmation-buttons button#cancelActionBtn {
    background-color: #6c757d;
    color: white;
}

.spacepdf-merge-app .confirmation-buttons button#cancelActionBtn:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
}

.spacepdf-merge-app .confirmation-buttons button#confirmActionBtn {
    background-color: #4a90e2;
    color: white;
}

.spacepdf-merge-app .confirmation-buttons button#confirmActionBtn:hover {
    background-color: #357abd;
    transform: translateY(-1px);
}

.spacepdf-merge-app #globalDropInstructionOverlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    z-index: 4000;
    justify-content: center;
    align-items: center;
    text-align: center;
    font-size: 1.5rem;
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.spacepdf-merge-app #globalDropInstructionOverlay.visible {
    display: flex;
    opacity: 1;
}

.spacepdf-merge-app #globalDropInstructionOverlay i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #4a90e2;
}

.spacepdf-merge-app .custom-tooltip,
.spacepdf-merge-app .add-more-btn,
.spacepdf-merge-app .merge-btn {
    font-family: 'IBM Plex Sans', sans-serif;
}

/* New Styling for "Order Updated" Toast Notification */
.spacepdf-merge-app .order-updated-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    /* Initially hidden below */
    background: rgba(30, 41, 59, 0.9);
    /* Dark slate color */
    color: #e2e8f0;
    /* Light text color */
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 4000;
    /* High z-index to be on top */
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.215, 0.610, 0.355, 1), opacity 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.spacepdf-merge-app .order-updated-toast i {
    font-size: 1rem;
    color: #22c55e;
    /* Green checkmark color */
}

.spacepdf-merge-app .order-updated-toast.show {
    transform: translateX(-50%) translateY(0);
    /* Slides up into view */
    opacity: 1;
}

@media (max-width: 768px) {
    .spacepdf-merge-app .order-updated-toast {
        font-size: 0.8rem;
        padding: 10px 20px;
        bottom: 15px;
    }
}

@media (max-width: 480px) {
    .spacepdf-merge-app .order-updated-toast {
        font-size: 0.75rem;
        padding: 8px 16px;
        bottom: 10px;
    }
}

.spacepdf-merge-app .mobile-order-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 5500;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.spacepdf-merge-app .mobile-order-popup.show {
    opacity: 1;
    visibility: visible;
}

.spacepdf-merge-app .mobile-order-popup-content {
    background: linear-gradient(to bottom, rgb(20, 30, 60), rgb(0, 0, 20));
    border-radius: 12px;
    padding: 20px;
    width: 90%;
    max-width: 350px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.spacepdf-merge-app .mobile-order-popup.show .mobile-order-popup-content {
    transform: scale(1);
}

.spacepdf-merge-app .mobile-order-popup h3 {
    color: #ffffff;
    font-size: 1.3rem;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.spacepdf-merge-app .order-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.spacepdf-merge-app .order-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 12px 15px;
    font-size: 1rem;
    cursor: pointer;
    text-align: left;
    display: flex;
    align-items: center;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.spacepdf-merge-app .order-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.spacepdf-merge-app .order-btn:active {
    transform: translateY(1px);
}

.spacepdf-merge-app .order-btn i {
    margin-right: 15px;
    font-size: 1rem;
    color: #4a90e2;
    width: 20px;
    text-align: center;
}

.spacepdf-merge-app .order-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.5);
}

.spacepdf-merge-app .order-btn.disabled i {
    color: rgba(74, 144, 226, 0.4);
}

.spacepdf-merge-app .order-btn.active {
    background: rgba(74, 144, 226, 0.4);
    transform: scale(0.98);
}

.spacepdf-merge-app .close-popup-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 12px 15px;
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    margin-top: 20px;
    width: 100%;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.spacepdf-merge-app .close-popup-btn:active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(0.98);
}

.spacepdf-merge-app .close-popup-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.spacepdf-merge-app .preview-image {
    -webkit-touch-callout: none !important;
    -webkit-user-select: none !important;
    -khtml-user-select: none !important;
    -moz-user-select: none !important;
    -ms-user-select: none !important;
    user-select: none !important;
    pointer-events: auto !important;
}

.spacepdf-merge-app .mobile-lock-icon {
    display: none;
    margin-right: 15px;
    color: #e0e0e0;
    font-size: 22px;
    min-width: 24px;
}

@media (max-width: 768px) {
    .spacepdf-merge-app .mobile-lock-icon {
        display: inline-block;
        vertical-align: middle;
        color: rgba(0, 140, 255, 0.9);
        opacity: 0.9;
        font-size: 24px;
        margin-right: 15px;
        min-width: 24px;
    }
}

.spacepdf-merge-app .file-info {
    position: relative;
}

.spacepdf-merge-app .filename-tooltip {
    position: absolute;
    bottom: calc(100% + 5px);
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    color: #e2e8f0;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-family: 'IBM Plex Sans', sans-serif;
    white-space: normal;
    word-break: break-all;
    width: 200px;
    text-align: center;
    z-index: 100;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease-in-out, transform 0.2s ease-in-out;
    max-height: 100px;
    overflow-y: auto;
}

.spacepdf-merge-app .file-info::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 100%;
    height: 10px;
}

.spacepdf-merge-app .filename-tooltip::-webkit-scrollbar {
    width: 5px;
}

.spacepdf-merge-app .filename-tooltip::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.spacepdf-merge-app .filename-tooltip::-webkit-scrollbar-thumb {
    background: rgba(74, 144, 226, 0.6);
    border-radius: 10px;
}

.spacepdf-merge-app .filename-tooltip::-webkit-scrollbar-thumb:hover {
    background: rgba(74, 144, 226, 1);
}

.spacepdf-merge-app .file-info:hover .filename-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}

@media (max-width: 768px) {
    .spacepdf-merge-app .filename-tooltip {
        display: none !important;
    }
}

/* --- NEW BUTTON STYLES FOR RESULT SCREEN --- */

/* 1. DESKTOP STYLES */

/* Style the "Merge Another" button as a secondary action on desktop */
.spacepdf-merge-app .result-buttons .new-merge-btn {
    background: transparent;
    border: 2px solid #4a90e2;
    /* Blue outline */
    color: #d1d5db;
    font-weight: 500;
    box-shadow: none;
    /* Remove default shadow for outline style */
}

/* Add a nice hover effect for the secondary button */
.spacepdf-merge-app .result-buttons .new-merge-btn:hover {
    background: rgba(74, 144, 226, 0.2);
    /* Subtle blue fill on hover */
    color: #ffffff;
    border-color: #5c9eee;
}


/* 2. MOBILE STYLES - Unify the appearance of both buttons */
@media (max-width: 768px) {

    /* Shared style to ensure both buttons are the same size on mobile */
    .spacepdf-merge-app .result-buttons .download-btn,
    .spacepdf-merge-app .result-buttons .new-merge-btn {
        width: 100%;
        max-width: 320px;
        /* Control max width for consistency */
        font-size: 1rem;
        padding: 14px 20px;
        font-weight: 600;
        margin: 5px 0;
        /* Add some vertical spacing */
        border: none;
    }

    /* Style the main download button on mobile */
    .spacepdf-merge-app .result-buttons .download-btn {
        background: linear-gradient(90deg, #1e90ff, #00bfff);
        box-shadow: 0 4px 12px rgba(30, 144, 255, 0.25);
        animation: none;
    }

    .spacepdf-merge-app .result-buttons .new-merge-btn {
        background: #357abd;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }

    .spacepdf-merge-app .result-buttons .download-btn::after {
        display: none;
    }
}