/* ============================================================
   PDF Page Numbers Tool — pdf-page-numbers.css
   Prefix: ppn-
   Accent: #8B5CF6  (violet)
   Accent RGB: 139, 92, 246
   ============================================================ */

/* ── Accent override for tool-base shared classes ─────────── */
.ppn-section {
    --tool-accent: #8B5CF6;
    --tool-accent-rgb: 139, 92, 246;
    padding: 40px 0 80px;
}

/* ── Section badge ─────────────────────────────────────────── */
.ppn-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.22);
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #8B5CF6;
    margin-bottom: 12px;
}

.ppn-badge i {
    font-size: 0.875rem;
}

/* ── Upload Zone ───────────────────────────────────────────── */
.ppn-upload-zone {
    display: block;
    border: 2px dashed rgba(139, 92, 246, 0.32);
    border-radius: 16px;
    background: rgba(139, 92, 246, 0.03);
    padding: 56px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    outline: none;
}

.ppn-upload-zone:hover,
.ppn-upload-zone:focus-visible {
    border-color: rgba(139, 92, 246, 0.6);
    background: rgba(139, 92, 246, 0.07);
}

.ppn-upload-zone.ppn-drag-over {
    border-color: #8B5CF6;
    background: rgba(139, 92, 246, 0.1);
}

.ppn-upload-icon {
    font-size: 3rem;
    color: #8B5CF6;
    opacity: 0.65;
    margin-bottom: 14px;
    display: block;
}

.ppn-upload-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.ppn-upload-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0 0 10px;
}

.ppn-upload-formats {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
    letter-spacing: 0.01em;
}

/* ── Workspace ─────────────────────────────────────────────── */
.ppn-workspace {
    margin-top: 24px;
}

/* ── Toolbar ───────────────────────────────────────────────── */
.ppn-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 0;
    border-top: 1px solid rgba(100, 116, 139, 0.1);
    border-bottom: 1px solid rgba(100, 116, 139, 0.1);
    margin-bottom: 24px;
}

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

.ppn-file-info {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(139, 92, 246, 0.07);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 8px;
    padding: 5px 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 360px;
}

/* ── Two-column layout ─────────────────────────────────────── */
.ppn-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    margin-bottom: 24px;
    align-items: start;
}

/* ── Settings Panel ────────────────────────────────────────── */
.ppn-settings-panel {
    background: #F8FAFC;
    border: 1px solid rgba(100, 116, 139, 0.12);
    border-radius: 14px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.ppn-setting-block {
    padding: 12px 0;
}

.ppn-setting-sep {
    height: 1px;
    background: rgba(100, 116, 139, 0.1);
}

.ppn-setting-heading {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.ppn-setting-heading i {
    font-size: 0.9375rem;
    color: #8B5CF6;
}

/* Row layout for label + control side-by-side */
.ppn-setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 0;
}

.ppn-setting-row .ppn-setting-heading {
    margin-bottom: 0;
}

/* ── 9-position grid ───────────────────────────────────────── */
.ppn-pos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    /* Logical order: top-left, top-center, top-right,
                      mid-left,  mid-center,  mid-right,
                      bottom-left, bottom-center, bottom-right */
}

.ppn-pos-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 9px;
    border: 1.5px solid rgba(100, 116, 139, 0.18);
    border-radius: 9px;
    background: #FFFFFF;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    aspect-ratio: 1;
}

.ppn-pos-btn:hover {
    border-color: rgba(139, 92, 246, 0.4);
    background: rgba(139, 92, 246, 0.05);
    color: #8B5CF6;
}

.ppn-pos-btn.ppn-pos-active {
    border-color: #8B5CF6;
    background: rgba(139, 92, 246, 0.08);
    color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

/* ── Format buttons ────────────────────────────────────────── */
.ppn-format-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ppn-fmt-btn {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 8px 12px;
    border: 1.5px solid rgba(100, 116, 139, 0.18);
    border-radius: 9px;
    background: #FFFFFF;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    text-align: left;
    width: 100%;
}

.ppn-fmt-btn:hover {
    border-color: rgba(139, 92, 246, 0.4);
    background: rgba(139, 92, 246, 0.04);
    color: #8B5CF6;
}

.ppn-fmt-btn.ppn-fmt-active {
    border-color: #8B5CF6;
    background: rgba(139, 92, 246, 0.07);
    color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.09);
}

/* ── Select dropdown ───────────────────────────────────────── */
.ppn-select-wrap {
    flex: 1;
    min-width: 0;
}

.ppn-select {
    width: 100%;
    padding: 8px 28px 8px 10px;
    font-size: 0.875rem;
    font-family: inherit;
    font-weight: 500;
    color: var(--text-primary);
    background: #FFFFFF url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2364748B' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 10px center;
    border: 1px solid rgba(100, 116, 139, 0.22);
    border-radius: 9px;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.ppn-select:focus {
    border-color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

/* ── Font row: select + bold toggle ───────────────────────── */
.ppn-font-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.ppn-bold-wrap {
    display: flex;
    align-items: center;
    cursor: pointer;
    flex-shrink: 0;
}

.ppn-bold-wrap input[type="checkbox"] {
    display: none;
}

.ppn-bold-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1.5px solid rgba(100, 116, 139, 0.22);
    border-radius: 9px;
    background: #FFFFFF;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    user-select: none;
}

.ppn-bold-wrap input:checked+.ppn-bold-label {
    border-color: #8B5CF6;
    background: rgba(139, 92, 246, 0.08);
    color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.ppn-bold-label em {
    font-style: italic;
    font-weight: normal;
    font-size: 1rem;
}

.ppn-bold-label:hover {
    border-color: rgba(139, 92, 246, 0.4);
}

/* ── Slider ────────────────────────────────────────────────── */
.ppn-slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ppn-range-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-light);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 16px;
    text-align: center;
}

.ppn-slider {
    flex: 1;
    height: 4px;
    border-radius: 99px;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    background: linear-gradient(to right,
            #8B5CF6 0%,
            #8B5CF6 var(--fill-pct, 18%),
            rgba(139, 92, 246, 0.18) var(--fill-pct, 18%),
            rgba(139, 92, 246, 0.18) 100%);
}

.ppn-slider::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #8B5CF6;
    border: 2px solid #FFFFFF;
    box-shadow: 0 1px 4px rgba(139, 92, 246, 0.45);
    cursor: pointer;
    transition: transform 0.1s;
}

.ppn-slider::-webkit-slider-thumb:hover {
    transform: scale(1.18);
}

.ppn-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #8B5CF6;
    border: 2px solid #FFFFFF;
    box-shadow: 0 1px 4px rgba(139, 92, 246, 0.45);
    cursor: pointer;
}

.ppn-slider:focus-visible::-webkit-slider-thumb {
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.25);
}

.ppn-size-val,
.ppn-margin-val {
    font-size: 0.875rem;
    font-weight: 700;
    color: #8B5CF6;
    white-space: nowrap;
    flex-shrink: 0;
}

/* ── Color picker ──────────────────────────────────────────── */
.ppn-color-row {
    display: flex;
    align-items: center;
    gap: 9px;
    flex-shrink: 0;
}

.ppn-color-input {
    width: 34px;
    height: 34px;
    border: 1.5px solid rgba(100, 116, 139, 0.22);
    border-radius: 8px;
    padding: 2px;
    cursor: pointer;
    background: transparent;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    flex-shrink: 0;
}

.ppn-color-input:focus {
    border-color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.ppn-color-hex {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: monospace;
}

/* ── Number input (start at) ───────────────────────────────── */
.ppn-number-input {
    width: 72px;
    padding: 8px 10px;
    font-size: 0.9375rem;
    font-family: inherit;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    background: #FFFFFF;
    border: 1px solid rgba(100, 116, 139, 0.22);
    border-radius: 9px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    flex-shrink: 0;
    -moz-appearance: textfield;
}

.ppn-number-input::-webkit-outer-spin-button,
.ppn-number-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.ppn-number-input:focus {
    border-color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

/* ── Toggle switches ───────────────────────────────────────── */
.ppn-toggle-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ppn-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    gap: 10px;
}

.ppn-toggle-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    user-select: none;
}

.ppn-toggle-wrap {
    position: relative;
    flex-shrink: 0;
}

.ppn-toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.ppn-toggle-track {
    display: block;
    width: 36px;
    height: 20px;
    border-radius: 99px;
    background: rgba(100, 116, 139, 0.25);
    position: relative;
    transition: background 0.2s;
}

.ppn-toggle-track::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #FFFFFF;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
    transition: transform 0.2s;
}

.ppn-toggle-input:checked+.ppn-toggle-track {
    background: #8B5CF6;
}

.ppn-toggle-input:checked+.ppn-toggle-track::after {
    transform: translateX(16px);
}

.ppn-toggle-input:focus-visible+.ppn-toggle-track {
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25);
}

/* ── Preview Panel ─────────────────────────────────────────── */
.ppn-preview-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: sticky;
    top: 20px;
}

.ppn-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2px;
}

.ppn-preview-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ppn-preview-title i {
    font-size: 1rem;
    color: #8B5CF6;
}

.ppn-preview-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ppn-prev-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: 1.5px solid rgba(100, 116, 139, 0.2);
    border-radius: 7px;
    background: #FFFFFF;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.ppn-prev-btn:hover:not(:disabled) {
    border-color: rgba(139, 92, 246, 0.4);
    color: #8B5CF6;
    background: rgba(139, 92, 246, 0.05);
}

.ppn-prev-btn:disabled {
    opacity: 0.35;
    cursor: default;
}

.ppn-page-indicator {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 60px;
    text-align: center;
}

.ppn-preview-canvas-wrap {
    position: relative;
    background: #E2E8F0;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(100, 116, 139, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    padding: 16px;
}

.ppn-preview-canvas {
    max-width: 100%;
    max-height: 60vh;
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.14);
    display: block;
    background: #FFFFFF;
}

.ppn-preview-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(226, 232, 240, 0.75);
    border-radius: 14px;
}

/* ── Action Panel ──────────────────────────────────────────── */
.ppn-action-panel {
    background: #F8FAFC;
    border: 1px solid rgba(100, 116, 139, 0.12);
    border-radius: 14px;
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.ppn-output-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.ppn-output-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    flex-shrink: 0;
}

.ppn-output-input-wrap {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 160px;
    max-width: 360px;
    background: #FFFFFF;
    border: 1px solid rgba(100, 116, 139, 0.22);
    border-radius: 9px;
    overflow: hidden;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.ppn-output-input-wrap:focus-within {
    border-color: #8B5CF6;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.ppn-output-input {
    flex: 1;
    padding: 8px 12px;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--text-primary);
    background: transparent;
    border: none;
    outline: none;
}

.ppn-output-input::placeholder {
    color: #94A3B8;
}

.ppn-output-ext {
    padding: 8px 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-light);
    border-left: 1px solid rgba(100, 116, 139, 0.15);
    white-space: nowrap;
}

.ppn-action-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ppn-btn-apply {
    min-width: 200px;
    padding: 11px 28px;
    font-size: 1rem;
    justify-content: center;
}

/* ── Shared Progress Bar ────────────────────────────────────── */
.ppn-progress-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ppn-progress-bar {
    height: 6px;
    background: rgba(139, 92, 246, 0.12);
    border-radius: 99px;
    overflow: hidden;
}

.ppn-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #8B5CF6, #A78BFA);
    border-radius: 99px;
    transition: width 0.3s ease;
}

.ppn-progress-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .ppn-layout {
        grid-template-columns: 280px 1fr;
    }
}

@media (max-width: 860px) {
    .ppn-layout {
        grid-template-columns: 1fr;
    }

    .ppn-preview-panel {
        position: static;
        order: -1;
        /* preview on top on mobile */
    }

    .ppn-preview-canvas-wrap {
        min-height: 260px;
    }
}

@media (max-width: 600px) {
    .ppn-toolbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .ppn-toolbar-right {
        width: 100%;
        justify-content: flex-end;
    }

    .ppn-settings-panel {
        padding: 16px;
    }

    .ppn-action-panel {
        padding: 16px;
    }

    .ppn-file-info {
        max-width: 100%;
    }

    .ppn-btn-apply {
        min-width: 0;
        width: 100%;
    }
}

@media (max-width: 420px) {
    .ppn-action-row {
        flex-direction: column;
        align-items: stretch;
    }

    .ppn-action-row .tool-btn {
        width: 100%;
        justify-content: center;
    }
}