.ebook-tool {
    --ebook-ink: #142235;
    --ebook-muted: #627287;
    --ebook-line: #d8e2ec;
    --ebook-soft: #f5f8fb;
    --ebook-soft-2: #edf5f8;
    --ebook-primary: #0f6fa8;
    --ebook-primary-dark: #0a4f79;
    --ebook-accent: #0f8f83;
    --ebook-accent-dark: #0a6f66;
    --ebook-warn: #b7791f;
    --ebook-danger: #c24135;
    --ebook-success: #16834c;
    --ebook-card: #ffffff;
    --ebook-shadow: 0 12px 32px rgba(21, 39, 63, .08);
    color: var(--ebook-ink);
    width: 100%;
}

.ebook-tool * {
    box-sizing: border-box;
    letter-spacing: 0;
}

.ebook-tool button,
.ebook-tool input,
.ebook-tool select {
    font: inherit;
}

.ebook-tip {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    border: 1px solid #cfe1e8;
    border-left: 4px solid var(--ebook-accent);
    background: linear-gradient(135deg, #f9fcfd, #eef8f6);
    border-radius: 8px;
    padding: 12px 14px;
    color: #2c5269;
    font-size: 13px;
    margin-bottom: 14px;
    line-height: 1.6;
}

.ebook-tip-icon {
    color: var(--ebook-accent);
    margin-top: 1px;
}

.ebook-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    background: #edf4f7;
    border: 1px solid var(--ebook-line);
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 16px;
}

.ebook-tab {
    border: 1px solid transparent;
    background: transparent;
    color: #153f5f;
    border-radius: 7px;
    padding: 12px 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 800;
    line-height: 1.2;
    cursor: pointer;
    transition: background .18s ease, color .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.ebook-tab i {
    color: var(--ebook-accent);
    font-size: 17px;
}

.ebook-tab:hover {
    background: #fff;
    border-color: #c8d6e2;
    color: var(--ebook-primary-dark);
}

.ebook-tab.is-active {
    background: #fff;
    color: #08496f;
    border-color: var(--ebook-primary);
    box-shadow: 0 6px 18px rgba(15, 111, 168, .14);
}

.ebook-tab.is-active i {
    color: var(--ebook-primary);
}

.ebook-panel {
    display: none;
}

.ebook-panel.is-active {
    display: block;
}

.ebook-layout,
.ebook-process-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 16px;
}

.ebook-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.ebook-section {
    border: 1px solid var(--ebook-line);
    background: var(--ebook-card);
    border-radius: 8px;
    padding: 18px;
    box-shadow: var(--ebook-shadow);
}

.ebook-section-title {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--ebook-ink);
    margin-bottom: 14px;
}

.ebook-section-title strong {
    font-size: 15px;
}

.ebook-step {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ebook-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 900;
    flex: 0 0 auto;
}

.ebook-drop {
    border: 2px dashed #b5c8d8;
    background: #f8fbfd;
    border-radius: 8px;
    min-height: 206px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 9px;
    transition: border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.ebook-drop.is-dragover {
    border-color: var(--ebook-accent);
    background: #ebf8f5;
    box-shadow: inset 0 0 0 2px rgba(15, 143, 131, .1);
}

.ebook-drop-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: #e5f5f2;
    color: var(--ebook-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 25px;
}

.ebook-drop-main {
    font-weight: 800;
    color: #15273d;
}

.ebook-drop-sub,
.ebook-muted {
    color: var(--ebook-muted);
    font-size: 13px;
    line-height: 1.65;
    margin: 0;
}

.ebook-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ebook-btn {
    border: 1px solid transparent;
    border-radius: 7px;
    padding: 9px 14px;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    background: #fff;
    color: var(--ebook-ink);
    font-size: 13px;
    font-weight: 800;
    line-height: 1.2;
    cursor: pointer;
    text-decoration: none;
    transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.ebook-btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.ebook-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

.ebook-btn-primary {
    background: var(--ebook-primary);
    color: #fff;
    box-shadow: 0 8px 18px rgba(15, 111, 168, .18);
}

.ebook-btn-primary:hover:not(:disabled) {
    background: var(--ebook-primary-dark);
    color: #fff;
}

.ebook-btn-accent {
    background: var(--ebook-accent);
    color: #fff;
    box-shadow: 0 8px 18px rgba(15, 143, 131, .18);
}

.ebook-btn-accent:hover:not(:disabled) {
    background: var(--ebook-accent-dark);
    color: #fff;
}

.ebook-btn-outline {
    border-color: #bfd0de;
    color: #244863;
}

.ebook-btn-outline:hover:not(:disabled) {
    border-color: var(--ebook-primary);
    background: #f2f8fb;
    color: var(--ebook-primary-dark);
}

.ebook-btn-lg {
    min-height: 44px;
    padding: 11px 18px;
    font-size: 14px;
}

.ebook-file-list {
    margin-top: 14px;
    display: grid;
    gap: 8px;
}

.ebook-file-item {
    border: 1px solid var(--ebook-line);
    border-radius: 8px;
    background: #fff;
    padding: 10px 11px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: center;
}

.ebook-file-name {
    font-size: 13px;
    font-weight: 800;
    color: #17263a;
    word-break: break-all;
}

.ebook-file-meta {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--ebook-muted);
    font-size: 12px;
    white-space: nowrap;
}

.ebook-format-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 3px 8px;
    background: #e7f1f7;
    color: var(--ebook-primary-dark);
    font-weight: 800;
    font-size: 11px;
}

.ebook-format-badge.warn {
    background: #fff5df;
    color: #90611a;
}

.ebook-note {
    border: 1px solid #cfe7e1;
    background: #eef8f5;
    color: #285d55;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 12px;
    line-height: 1.55;
}

.ebook-samples {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.ebook-sample {
    border: 1px solid var(--ebook-line);
    background: #fff;
    color: var(--ebook-ink);
    border-radius: 8px;
    padding: 13px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 10px;
    align-items: center;
    text-align: left;
    cursor: pointer;
    transition: border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.ebook-sample:hover {
    border-color: var(--ebook-accent);
    background: #f4fbfa;
    box-shadow: 0 6px 16px rgba(15, 143, 131, .08);
}

.ebook-sample i {
    grid-row: span 2;
    color: var(--ebook-accent);
    font-size: 24px;
}

.ebook-sample strong {
    font-size: 13px;
}

.ebook-sample span {
    color: var(--ebook-muted);
    font-size: 12px;
    line-height: 1.5;
}

.ebook-capability {
    display: grid;
    gap: 9px;
}

.ebook-capability div {
    border: 1px solid #e0e8ef;
    background: #fbfdfe;
    border-radius: 8px;
    padding: 10px 12px;
}

.ebook-capability b {
    display: block;
    font-size: 13px;
    margin-bottom: 3px;
}

.ebook-capability span {
    display: block;
    color: var(--ebook-muted);
    font-size: 12px;
    line-height: 1.55;
}

.ebook-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.ebook-field span {
    color: #344b65;
    font-size: 12px;
    font-weight: 800;
}

.ebook-field input,
.ebook-field select {
    width: 100%;
    border: 1px solid #cbd8e3;
    border-radius: 7px;
    background: #fff;
    color: var(--ebook-ink);
    padding: 9px 11px;
    min-height: 38px;
    outline: none;
    font-size: 13px;
}

.ebook-field input:focus,
.ebook-field select:focus {
    border-color: var(--ebook-primary);
    box-shadow: 0 0 0 3px rgba(15, 111, 168, .12);
}

.ebook-two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.ebook-check {
    border: 1px solid #dce6ee;
    background: #fff;
    border-radius: 8px;
    padding: 11px 12px;
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin-bottom: 9px;
    cursor: pointer;
}

.ebook-check input {
    margin-top: 2px;
    accent-color: var(--ebook-primary);
    flex: 0 0 auto;
}

.ebook-check b {
    display: block;
    font-size: 13px;
    color: var(--ebook-ink);
    margin-bottom: 2px;
}

.ebook-check small {
    display: block;
    color: var(--ebook-muted);
    font-size: 12px;
    line-height: 1.45;
}

.ebook-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    border: 1px solid var(--ebook-line);
    background: var(--ebook-soft);
    border-radius: 8px;
    margin-top: 16px;
    padding: 13px 14px;
}

.ebook-state {
    color: #33566f;
    font-size: 13px;
    line-height: 1.5;
}

.ebook-progress {
    height: 12px;
    border-radius: 999px;
    background: #e2ecf3;
    overflow: hidden;
    margin-top: 16px;
    border: 1px solid #d1dfe9;
}

.ebook-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--ebook-primary), var(--ebook-accent));
    transition: width .2s ease;
}

.ebook-progress-text {
    color: var(--ebook-muted);
    font-size: 13px;
    margin-top: 8px;
}

.ebook-log {
    border: 1px solid #dce6ee;
    background: #fbfdfe;
    border-radius: 8px;
    margin-top: 12px;
    max-height: 190px;
    overflow: auto;
    padding: 10px 12px;
    font-size: 12px;
    color: #344b65;
    line-height: 1.65;
}

.ebook-log:empty {
    display: none;
}

.ebook-log-line {
    border-bottom: 1px solid #edf3f6;
    padding: 4px 0;
}

.ebook-log-line:last-child {
    border-bottom: 0;
}

.ebook-log-line.success {
    color: var(--ebook-success);
}

.ebook-log-line.error {
    color: var(--ebook-danger);
}

.ebook-log-line.warn {
    color: var(--ebook-warn);
}

.ebook-result-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
    margin-bottom: 12px;
}

.ebook-result-summary div {
    border: 1px solid var(--ebook-line);
    background: #fff;
    border-radius: 8px;
    padding: 12px;
    text-align: center;
}

.ebook-result-summary span {
    display: block;
    color: var(--ebook-muted);
    font-size: 12px;
    margin-bottom: 4px;
}

.ebook-result-summary b {
    display: block;
    color: var(--ebook-ink);
    font-size: 18px;
}

.ebook-results {
    display: grid;
    gap: 8px;
    margin-top: 12px;
    max-height: 340px;
    overflow: auto;
}

.ebook-result-item {
    border: 1px solid var(--ebook-line);
    background: #fff;
    border-radius: 8px;
    padding: 10px 11px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
}

.ebook-result-title {
    font-size: 13px;
    color: var(--ebook-ink);
    font-weight: 800;
    word-break: break-all;
}

.ebook-result-meta {
    color: var(--ebook-muted);
    font-size: 12px;
    margin-top: 3px;
}

.ebook-result-status {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 9px;
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}

.ebook-result-status.success {
    background: #e7f6ee;
    color: var(--ebook-success);
}

.ebook-result-status.error {
    background: #fff0ee;
    color: var(--ebook-danger);
}

.ebook-empty {
    border: 1px dashed #c5d4df;
    background: #f8fbfd;
    color: var(--ebook-muted);
    border-radius: 8px;
    padding: 18px;
    text-align: center;
    font-size: 13px;
}

@media (max-width: 1080px) {
    .ebook-layout,
    .ebook-process-grid,
    .ebook-grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .ebook-tabs,
    .ebook-samples,
    .ebook-two,
    .ebook-result-summary {
        grid-template-columns: 1fr;
    }

    .ebook-tab {
        justify-content: flex-start;
    }

    .ebook-footer {
        align-items: stretch;
    }

    .ebook-footer .ebook-actions,
    .ebook-footer .ebook-btn,
    .ebook-actions .ebook-btn-lg {
        width: 100%;
    }

    .ebook-file-item,
    .ebook-result-item {
        grid-template-columns: 1fr;
    }

    .ebook-file-meta,
    .ebook-result-status {
        justify-content: flex-start;
    }
}