.back-link {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin: 0 0 18px 2px;
    color: var(--muted);
    text-decoration: none;
    font-size: .87rem;
    font-weight: 760;
    transition: color .18s ease, transform .18s ease;
}

.back-link:hover {
    color: var(--primary-strong);
    transform: translateX(-2px);
}

.image-pdf-page {
    padding-bottom: 42px;
}

.compact-hero {
    margin-top: 28px;
}

.converter-layout {
    display: grid;
    grid-template-columns: minmax(280px, 380px) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    margin-top: 22px;
}

.glass-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow-sm);
}

.control-panel,
.workspace-panel {
    padding: 22px;
}

.panel-head h2 {
    margin: 0;
    font-size: 1.08rem;
    color: var(--text);
}

.panel-head p {
    margin: 7px 0 0;
    color: var(--muted);
    line-height: 1.6;
    font-size: .94rem;
}

.upload-zone {
    display: grid;
    place-items: center;
    gap: 8px;
    text-align: center;
    margin: 18px 0;
    padding: 28px 18px;
    border: 1.5px dashed color-mix(in srgb, var(--primary) 55%, var(--border));
    border-radius: 22px;
    background: color-mix(in srgb, var(--primary) 7%, transparent);
    cursor: pointer;
    transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.upload-zone:hover,
.upload-zone.is-dragover {
    transform: translateY(-2px);
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 12%, transparent);
}

.upload-icon {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 14%, transparent);
    font-size: 1.55rem;
}

.upload-zone strong {
    color: var(--text);
}

.upload-zone small {
    color: var(--muted);
}

.settings-stack {
    display: grid;
    gap: 14px;
}

.setting-grid {
    display: grid;
    gap: 12px;
}

.two-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-group {
    display: grid;
    gap: 7px;
}

.field-group label {
    color: var(--text);
    font-weight: 700;
    font-size: .88rem;
}

.field-group input,
.field-group select {
    width: 100%;
    min-height: 44px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--surface-soft);
    color: var(--text);
    padding: 0 12px;
    outline: none;
    box-sizing: border-box;
}

.field-group input:focus,
.field-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 16%, transparent);
}

.input-suffix {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface-soft);
    overflow: hidden;
}

.input-suffix:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 16%, transparent);
}

.input-suffix input {
    border: 0;
    box-shadow: none;
    border-radius: 0;
    background: transparent;
}

.input-suffix span {
    padding: 0 12px;
    color: var(--muted);
    font-size: .85rem;
}

.button-row {
    display: flex;
    gap: 10px;
    margin-top: 18px;
    flex-wrap: wrap;
}

.primary-button,
.secondary-button {
    min-height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    border-radius: 15px;
    padding: 0 16px;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
    border: 0;
    transition: transform .2s ease, opacity .2s ease;
}

.primary-button {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #6b6cff);
    box-shadow: 0 16px 34px color-mix(in srgb, var(--primary) 25%, transparent);
}

.secondary-button {
    color: var(--text);
    background: var(--surface-soft);
    border: 1px solid var(--border);
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button:disabled {
    opacity: .58;
    cursor: not-allowed;
    transform: none;
}

.workspace-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
}

.count-pill {
    min-width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 13%, transparent);
    color: var(--primary);
    font-weight: 900;
}

.image-list {
    margin-top: 18px;
    min-height: 360px;
    display: grid;
    gap: 12px;
}

.empty-state {
    min-height: 320px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 10px;
    text-align: center;
    border: 1px dashed var(--border);
    border-radius: 22px;
    background: var(--surface-soft);
    color: var(--muted);
}

.empty-state i {
    font-size: 2rem;
    color: var(--primary);
}

.empty-state strong {
    color: var(--text);
    font-size: 1.1rem;
}

.image-item {
    display: grid;
    grid-template-columns: 90px minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface-soft);
    cursor: grab;
}

.image-item.is-dragging {
    opacity: .55;
}

.image-thumb {
    width: 90px;
    height: 72px;
    object-fit: cover;
    border-radius: 12px;
    background: #fff;
    border: 1px solid var(--border);
}

.image-meta {
    min-width: 0;
}

.image-meta strong {
    display: block;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-meta span {
    display: block;
    color: var(--muted);
    font-size: .88rem;
    margin-top: 4px;
}

.item-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.icon-button {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    display: grid;
    place-items: center;
}

.icon-button:hover {
    color: var(--primary);
    border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
}

.result-box {
    margin-top: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px;
    border-radius: 20px;
    border: 1px solid color-mix(in srgb, #16b984 45%, var(--border));
    background: color-mix(in srgb, #16b984 10%, var(--surface));
}

.result-box strong {
    color: var(--text);
}

.result-box p {
    margin: 4px 0 0;
    color: var(--muted);
}

.download-button {
    flex: 0 0 auto;
}

@media (max-width: 980px) {
    .converter-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .control-panel,
    .workspace-panel {
        padding: 16px;
        border-radius: 22px;
    }

    .two-cols {
        grid-template-columns: 1fr;
    }

    .button-row,
    .result-box {
        flex-direction: column;
        align-items: stretch;
    }

    .primary-button,
    .secondary-button {
        width: 100%;
    }

    .image-item {
        grid-template-columns: 72px minmax(0, 1fr);
    }

    .image-thumb {
        width: 72px;
        height: 60px;
    }

    .item-actions {
        grid-column: 1 / -1;
        justify-content: flex-start;
    }
}

/* v1.1: clearer percent slider for image quality */
.quality-field {
    gap: 10px;
}

.quality-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.quality-label-row strong {
    min-width: 48px;
    text-align: right;
    color: var(--primary);
    font-weight: 900;
    font-size: .92rem;
}

.field-group input[type="range"] {
    min-height: auto;
    height: 32px;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
    accent-color: var(--primary);
    cursor: pointer;
}

.field-group input[type="range"]:focus {
    box-shadow: none;
}