/* ============================================
   PDF Page Reorder
   Prefix: ppr- (avoids custom_styles.css conflicts)
   Primary: #3399cc (blue - organizational action)
   Light mode default | Dark mode via [data-theme="dark"]
   ============================================ */

:root {
    --ppr-transition: 0.25s;

    /* Brand colors */
    --ppr-primary:       #3399cc;
    --ppr-primary-light: rgba(51,153,204,0.1);
    --ppr-primary-dark:  #2277aa;
    --ppr-success:       #339966;
    --ppr-success-light: rgba(51,153,102,0.1);
    --ppr-danger:        #e64e4e;
    --ppr-danger-light:  rgba(230,78,78,0.1);
    --ppr-warning:       #f59e0b;
    --ppr-warning-light: rgba(245,158,11,0.12);

    /* Backgrounds */
    --ppr-bg:            #f0f7fc;
    --ppr-bg-elevated:   #ffffff;
    --ppr-bg-secondary:  #f1f5f9;
    --ppr-bg-tertiary:   #e2e8f0;

    /* Text */
    --ppr-text:          #1e293b;
    --ppr-text-sec:      #475569;
    --ppr-text-muted:    #64748b;

    /* Borders */
    --ppr-border:        #d1d5db;
    --ppr-border-light:  #e2e8f0;

    /* Shadows */
    --ppr-shadow-sm:      0 1px 3px rgba(0,0,0,0.08);
    --ppr-shadow-md:      0 4px 12px rgba(0,0,0,0.1);
    --ppr-shadow-lg:      0 10px 24px rgba(0,0,0,0.12);
    --ppr-shadow-primary: 0 4px 14px rgba(51,153,204,0.3);
    --ppr-shadow-prim-hv: 0 6px 20px rgba(51,153,204,0.4);

    /* Radius */
    --ppr-radius-sm:   6px;
    --ppr-radius-md:   12px;
    --ppr-radius-lg:   16px;
    --ppr-radius-xl:   24px;
    --ppr-radius-full: 9999px;
}

[data-theme="dark"] {
    --ppr-primary:       #5bb8e8;
    --ppr-primary-light: rgba(91,184,232,0.15);
    --ppr-primary-dark:  #3399cc;
    --ppr-success:       #4ade80;
    --ppr-success-light: rgba(74,222,128,0.15);
    --ppr-danger:        #f87171;
    --ppr-danger-light:  rgba(248,113,113,0.15);
    --ppr-warning:       #fbbf24;
    --ppr-warning-light: rgba(251,191,36,0.15);

    --ppr-bg:            #0f172a;
    --ppr-bg-elevated:   #1e293b;
    --ppr-bg-secondary:  #334155;
    --ppr-bg-tertiary:   #475569;

    --ppr-text:          #f1f5f9;
    --ppr-text-sec:      #cbd5e1;
    --ppr-text-muted:    #94a3b8;

    --ppr-border:        #334155;
    --ppr-border-light:  #475569;

    --ppr-shadow-sm:      0 1px 3px rgba(0,0,0,0.3);
    --ppr-shadow-md:      0 4px 12px rgba(0,0,0,0.4);
    --ppr-shadow-lg:      0 10px 24px rgba(0,0,0,0.5);
    --ppr-shadow-primary: 0 4px 14px rgba(91,184,232,0.2);
    --ppr-shadow-prim-hv: 0 6px 20px rgba(91,184,232,0.3);
}

* { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--ppr-bg);
    color: var(--ppr-text);
    line-height: 1.6;
    margin: 0; padding: 0;
    transition: background-color var(--ppr-transition), color var(--ppr-transition);
}

/* ── Layout ───────────────────────────────────────── */
.ppr-container { max-width: 1040px; margin: 0 auto; padding: 2rem; }

/* ── Header ───────────────────────────────────────── */
.ppr-header { text-align: center; margin-bottom: 2rem; }

.ppr-title-row {
    display: flex; align-items: center; justify-content: center;
    gap: 1rem; margin-bottom: 1rem;
}

.ppr-icon-wrapper {
    width: 64px; height: 64px;
    background: var(--ppr-primary);
    border-radius: var(--ppr-radius-lg);
    display: flex; align-items: center; justify-content: center;
    color: white;
    box-shadow: var(--ppr-shadow-primary);
    flex-shrink: 0;
}

.ppr-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700; margin: 0;
    color: var(--ppr-primary);
    letter-spacing: -0.02em;
}

.ppr-description {
    font-size: 1.05rem; color: var(--ppr-text-sec);
    max-width: 800px; margin: 0 auto; line-height: 1.75;
}
.ppr-description a { color: var(--ppr-primary); text-decoration: none; font-weight: 500; }
.ppr-description a:hover { text-decoration: underline; }

/* ── Main Card ────────────────────────────────────── */
.ppr-main {
    background: var(--ppr-bg-elevated);
    border-radius: var(--ppr-radius-xl);
    box-shadow: var(--ppr-shadow-lg);
    border: 1px solid var(--ppr-border);
    margin-bottom: 2rem;
    overflow: visible;
    transition: background-color var(--ppr-transition), border-color var(--ppr-transition);
}

/* ── Upload ───────────────────────────────────────── */
.ppr-upload-section { padding: 3rem; }

.ppr-upload-area {
    border: 2px dashed var(--ppr-border);
    border-radius: var(--ppr-radius-lg);
    padding: 4rem 2rem; text-align: center; cursor: pointer;
    transition: all 0.3s ease;
    background: var(--ppr-bg-secondary);
    position: relative; overflow: hidden;
}
.ppr-upload-area::before {
    content: ''; position: absolute; inset: 0;
    background: var(--ppr-primary-light); opacity: 0;
    transition: opacity 0.3s ease;
}
.ppr-upload-area:hover,
.ppr-upload-area.dragover {
    border-color: var(--ppr-primary); background: var(--ppr-bg);
    transform: translateY(-2px); box-shadow: var(--ppr-shadow-md);
}
.ppr-upload-area:hover::before,
.ppr-upload-area.dragover::before { opacity: 1; }

.ppr-upload-content { position: relative; z-index: 1; }
.ppr-upload-icon { color: var(--ppr-primary); margin-bottom: 1.5rem; transition: transform 0.3s; }
.ppr-upload-area:hover .ppr-upload-icon { transform: translateY(-6px); }
.ppr-upload-title { font-size: 1.5rem; font-weight: 600; color: var(--ppr-text); margin: 0 0 0.5rem; }
.ppr-upload-subtitle { color: var(--ppr-text-muted); margin: 0 0 1rem; }

.ppr-file-types { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 1rem; }
.ppr-badge {
    background: var(--ppr-primary-light); color: var(--ppr-primary);
    padding: 0.35rem 0.85rem; border-radius: var(--ppr-radius-full);
    font-size: 0.8rem; font-weight: 600;
}

.ppr-upload-hint {
    display: inline-flex; align-items: center; gap: 0.5rem;
    color: var(--ppr-text-muted); font-size: 0.875rem;
}

/* ── Loading Thumbnails ───────────────────────────── */
.ppr-loading-section { padding: 4rem 2rem; text-align: center; }
.ppr-loading-card { display: inline-flex; flex-direction: column; align-items: center; gap: 1rem; }
.ppr-loading-ring {
    width: 48px; height: 48px;
    border: 4px solid var(--ppr-border);
    border-top-color: var(--ppr-primary);
    border-radius: 50%;
    animation: ppr-spin 0.8s linear infinite;
}
.ppr-loading-title { font-size: 1.1rem; font-weight: 600; color: var(--ppr-text); margin: 0; }
.ppr-loading-sub   { font-size: 0.875rem; color: var(--ppr-text-muted); margin: 0; }

/* ── Editor ───────────────────────────────────────── */
.ppr-editor-section { animation: ppr-fadeIn 0.35s ease; }

/* Toolbar */
.ppr-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    background: var(--ppr-bg-secondary);
    border-bottom: 1px solid var(--ppr-border);
}

.ppr-toolbar-left, .ppr-toolbar-right { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }

.ppr-doc-info {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.875rem; font-weight: 600; color: var(--ppr-text);
}
.ppr-doc-info svg { color: var(--ppr-primary); flex-shrink: 0; }
.ppr-doc-name {
    max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.ppr-page-stats { display: flex; gap: 0.5rem; }
.ppr-stat-chip {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.3rem 0.7rem;
    background: var(--ppr-bg-elevated);
    border: 1px solid var(--ppr-border);
    border-radius: var(--ppr-radius-full);
    font-size: 0.8rem; color: var(--ppr-text-sec); font-weight: 500;
}
.ppr-stat-chip svg { width: 14px; height: 14px; color: var(--ppr-primary); }
.ppr-stat-del svg { color: var(--ppr-danger); }
.ppr-stat-del { color: var(--ppr-danger); }

/* Tool buttons */
.ppr-container .ppr-tool-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--ppr-border);
    border-radius: var(--ppr-radius-md);
    background: var(--ppr-bg-elevated) !important;
    color: var(--ppr-text) !important;
    font-size: 0.82rem; font-weight: 600; cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: none !important;
    transform: none !important;
}
.ppr-container .ppr-tool-btn svg { width: 15px; height: 15px; color: var(--ppr-text-muted); }
.ppr-container .ppr-tool-btn:hover {
    border-color: var(--ppr-primary); color: var(--ppr-primary) !important;
    background: var(--ppr-primary-light) !important;
    box-shadow: none !important; transform: none !important;
}
.ppr-container .ppr-tool-btn:hover svg { color: var(--ppr-primary); }

.ppr-container .ppr-tool-danger:hover {
    border-color: var(--ppr-danger); color: var(--ppr-danger) !important;
    background: var(--ppr-danger-light) !important;
}
.ppr-container .ppr-tool-danger:hover svg { color: var(--ppr-danger); }

/* Order Changed Banner */
.ppr-order-banner {
    display: flex; align-items: center; gap: 0.625rem;
    padding: 0.75rem 1.5rem;
    background: var(--ppr-primary-light);
    color: var(--ppr-primary);
    font-size: 0.875rem; font-weight: 500;
    border-bottom: 1px solid rgba(51,153,204,0.2);
}
.ppr-order-banner svg { flex-shrink: 0; width: 16px; height: 16px; }

/* Grid Wrap */
.ppr-grid-wrap {
    padding: 1.5rem;
    min-height: 200px;
}

/* Pages Grid */
.ppr-pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}

/* Page Card */
.ppr-page-card {
    position: relative;
    background: var(--ppr-bg-elevated);
    border: 2px solid var(--ppr-border);
    border-radius: var(--ppr-radius-md);
    overflow: hidden;
    cursor: grab;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    user-select: none;
}
.ppr-page-card:hover {
    border-color: var(--ppr-primary);
    box-shadow: var(--ppr-shadow-md);
}
.ppr-page-card.ppr-dragging {
    opacity: 0.5;
    cursor: grabbing;
    transform: scale(0.97);
}
.ppr-page-card.sortable-ghost {
    opacity: 0.35;
}
.ppr-page-card.sortable-chosen {
    box-shadow: var(--ppr-shadow-primary);
    border-color: var(--ppr-primary);
}

/* Page Position Badge */
.ppr-page-pos {
    position: absolute; top: 6px; left: 6px;
    background: var(--ppr-primary);
    color: white;
    font-size: 0.68rem; font-weight: 700;
    padding: 2px 7px; border-radius: var(--ppr-radius-full);
    z-index: 3; line-height: 1.4;
}

/* Original page number badge */
.ppr-page-orig {
    position: absolute; top: 6px; right: 6px;
    background: rgba(0,0,0,0.45);
    color: white;
    font-size: 0.65rem; font-weight: 600;
    padding: 2px 6px; border-radius: var(--ppr-radius-full);
    z-index: 3; line-height: 1.4;
}

/* Rotation badge */
.ppr-rot-badge {
    position: absolute; bottom: 36px; right: 6px;
    background: rgba(0,0,0,0.5);
    color: white;
    font-size: 0.62rem; font-weight: 700;
    padding: 1px 5px; border-radius: var(--ppr-radius-full);
    z-index: 3; display: none;
}
.ppr-page-card[data-rotation]:not([data-rotation="0"]) .ppr-rot-badge { display: block; }

/* Thumbnail */
.ppr-thumb-wrap {
    width: 100%;
    aspect-ratio: 0.707; /* A4 ratio */
    overflow: hidden;
    background: var(--ppr-bg-secondary);
    display: flex; align-items: center; justify-content: center;
    position: relative;
}

.ppr-thumb-img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.35s ease;
    display: block;
}

/* Rotation applied via CSS on the img */
.ppr-page-card[data-rotation="90"]  .ppr-thumb-img { transform: rotate(90deg) scale(0.707); }
.ppr-page-card[data-rotation="180"] .ppr-thumb-img { transform: rotate(180deg); }
.ppr-page-card[data-rotation="270"] .ppr-thumb-img { transform: rotate(270deg) scale(0.707); }

.ppr-thumb-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 0.5rem; color: var(--ppr-text-muted);
    width: 100%; height: 100%;
}
.ppr-thumb-placeholder svg { width: 32px; height: 32px; opacity: 0.5; }
.ppr-thumb-placeholder span { font-size: 0.75rem; }

/* Drag overlay */
.ppr-card-overlay {
    position: absolute; inset: 0;
    background: rgba(51,153,204,0.12);
    opacity: 0; transition: opacity 0.2s;
    display: flex; align-items: center; justify-content: center;
    z-index: 2;
}
.ppr-page-card:hover .ppr-card-overlay { opacity: 1; }
.ppr-drag-handle {
    color: var(--ppr-primary); opacity: 0.8;
}
.ppr-drag-handle svg { width: 24px; height: 24px; }

/* Page Controls */
.ppr-page-controls {
    display: flex; align-items: center; justify-content: space-between;
    padding: 5px 6px;
    background: var(--ppr-bg-secondary);
    gap: 2px;
}

.ppr-container .ppr-ctrl-btn {
    width: 26px; height: 26px;
    border: none; border-radius: var(--ppr-radius-sm);
    background: var(--ppr-bg-elevated) !important;
    color: var(--ppr-text-muted) !important;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s ease; flex-shrink: 0;
    box-shadow: none !important; transform: none !important;
}
.ppr-container .ppr-ctrl-btn svg { width: 13px; height: 13px; }

.ppr-container .ppr-ctrl-btn:hover {
    background: var(--ppr-primary-light) !important;
    color: var(--ppr-primary) !important;
    transform: none !important; box-shadow: none !important;
}
.ppr-container .ppr-ctrl-btn.ppr-ctrl-del:hover {
    background: var(--ppr-danger-light) !important;
    color: var(--ppr-danger) !important;
}

.ppr-page-label {
    font-size: 0.68rem; font-weight: 700;
    color: var(--ppr-text-muted);
    flex: 1; text-align: center;
    line-height: 1;
}

/* Empty State */
.ppr-empty-state {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 4rem 2rem; gap: 1rem; text-align: center;
    color: var(--ppr-text-muted);
}
.ppr-empty-state svg { opacity: 0.4; }
.ppr-empty-state p { margin: 0; font-size: 1rem; }

/* Hint Bar */
.ppr-hint-bar {
    display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem 1.25rem;
    padding: 0.75rem 1.5rem;
    background: var(--ppr-bg-secondary);
    border-top: 1px solid var(--ppr-border);
}
.ppr-hint-item {
    display: inline-flex; align-items: center; gap: 0.35rem;
    font-size: 0.78rem; color: var(--ppr-text-muted);
}
.ppr-hint-item svg { width: 14px; height: 14px; color: var(--ppr-primary); }
.ppr-hint-sep { width: 1px; height: 14px; background: var(--ppr-border); }

/* Action Bar */
.ppr-action-bar {
    display: flex; justify-content: flex-end; gap: 1rem;
    padding: 1.5rem;
    border-top: 1px solid var(--ppr-border);
    background: var(--ppr-bg-secondary);
}

/* ── Button base reset (defeat custom_styles.css global button rules) ─ */
.ppr-container button,
.ppr-container a.ppr-btn {
    background-color: transparent;
    color: inherit;
    box-shadow: none;
    transform: none;
}
.ppr-container button:hover,
.ppr-container a.ppr-btn:hover {
    background-color: transparent;
    box-shadow: none;
    transform: none;
}

/* Actual buttons */
.ppr-container .ppr-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.875rem 1.75rem; border-radius: var(--ppr-radius-full);
    font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: all 0.2s ease; text-decoration: none; border: none;
}
.ppr-container .ppr-btn svg { width: 18px; height: 18px; }

.ppr-container .ppr-btn-primary {
    background: var(--ppr-primary) !important;
    color: white !important;
    box-shadow: var(--ppr-shadow-primary) !important;
}
.ppr-container .ppr-btn-primary:hover {
    background: var(--ppr-primary-dark) !important;
    color: white !important;
    transform: translateY(-2px) !important;
    box-shadow: var(--ppr-shadow-prim-hv) !important;
}

.ppr-container .ppr-btn-secondary {
    background: var(--ppr-bg-elevated) !important;
    color: var(--ppr-text) !important;
    border: 1px solid var(--ppr-border) !important;
    box-shadow: none !important;
}
.ppr-container .ppr-btn-secondary:hover {
    background: var(--ppr-bg-secondary) !important;
    color: var(--ppr-text) !important;
    border-color: var(--ppr-text-muted) !important;
    transform: none !important; box-shadow: none !important;
}

/* ── Processing Overlay ────────────────────────────── */
.ppr-processing-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.55);
    display: flex; align-items: center; justify-content: center;
    z-index: 9000;
    backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px);
}

.ppr-processing-card {
    background: var(--ppr-bg-elevated);
    border-radius: var(--ppr-radius-xl);
    padding: 2rem 2.5rem; text-align: center;
    box-shadow: 0 25px 60px rgba(0,0,0,0.35);
    min-width: 320px; max-width: 420px; width: 90%;
    border: 1px solid var(--ppr-border);
}

/* Stage dots */
.ppr-progress-stages { display: flex; align-items: center; justify-content: center; margin-bottom: 1.75rem; }
.ppr-stage-dot { display: flex; flex-direction: column; align-items: center; gap: 0.3rem; color: var(--ppr-text-muted); transition: color 0.3s; }
.ppr-stage-icon {
    width: 20px; height: 20px; padding: 7px;
    background: var(--ppr-bg-secondary); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.3s; box-sizing: content-box;
}
.ppr-stage-icon svg { width: 14px; height: 14px; display: block; }
.ppr-stage-dot span { font-size: 0.65rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.ppr-stage-dot.active .ppr-stage-icon { background: var(--ppr-primary); color: #fff; }
.ppr-stage-dot.active                  { color: var(--ppr-primary); }
.ppr-stage-dot.done .ppr-stage-icon   { background: var(--ppr-success); color: #fff; }
.ppr-stage-dot.done                    { color: var(--ppr-success); }
.ppr-stage-connector { width: 28px; height: 2px; background: var(--ppr-border); margin: 0 0.25rem 1.1rem; flex-shrink: 0; }

.ppr-css-spinner {
    width: 44px; height: 44px;
    border: 4px solid var(--ppr-border);
    border-top-color: var(--ppr-primary);
    border-radius: 50%;
    animation: ppr-spin 0.8s linear infinite;
    margin: 0 auto 1.25rem;
}

.ppr-progress-bar-wrap {
    height: 6px; background: var(--ppr-border);
    border-radius: var(--ppr-radius-full); overflow: hidden; margin-bottom: 0.875rem;
}
.ppr-progress-bar-fill {
    height: 100%; background: var(--ppr-primary); width: 0%;
    transition: width 0.4s ease; border-radius: var(--ppr-radius-full);
}
.ppr-processing-status { font-size: 0.9rem; font-weight: 500; color: var(--ppr-text); margin: 0 0 0.25rem; }
.ppr-progress-pct { font-size: 0.82rem; color: var(--ppr-text-muted); margin: 0; }

/* ── Results ─────────────────────────────────────── */
.ppr-results-section { padding: 2.5rem; text-align: center; animation: ppr-fadeIn 0.4s ease; }
.ppr-results-header { margin-bottom: 2rem; }

.ppr-success-icon {
    width: 72px; height: 72px; background: var(--ppr-success); border-radius: var(--ppr-radius-full);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.25rem; color: white;
}
.ppr-success-icon svg { width: 36px; height: 36px; }
.ppr-results-header h2 { font-size: 1.75rem; color: var(--ppr-text); margin: 0 0 0.5rem; }
.ppr-results-header p  { color: var(--ppr-text-muted); margin: 0; }

.ppr-result-stats {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 1.5rem;
    margin-bottom: 2rem;
}
.ppr-result-stat { text-align: center; }
.ppr-result-stat-label { display: block; font-size: 0.78rem; color: var(--ppr-text-muted); margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.05em; }
.ppr-result-stat-value { font-size: 1.3rem; font-weight: 700; color: var(--ppr-primary); }

.ppr-results-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* ── Error ───────────────────────────────────────── */
.ppr-error {
    display: flex; align-items: flex-start; gap: 0.75rem;
    background: var(--ppr-danger-light); border: 1px solid var(--ppr-danger);
    padding: 1rem 1.25rem; border-radius: var(--ppr-radius-md); margin: 1.25rem;
}
.ppr-error svg { color: var(--ppr-danger); flex-shrink: 0; margin-top: 2px; }
.ppr-error-body { flex: 1; }
.ppr-error-title  { font-weight: 600; color: var(--ppr-danger); margin: 0 0 0.25rem; font-size: 0.95rem; }
.ppr-error-detail { color: var(--ppr-danger); margin: 0 0 0.5rem; font-size: 0.875rem; opacity: 0.9; }
.ppr-error-contact { font-size: 0.82rem; color: var(--ppr-text-sec); margin: 0; }
.ppr-error-contact a { color: var(--ppr-primary); font-weight: 600; text-decoration: none; }
.ppr-error-contact a:hover { text-decoration: underline; }

/* ── Related Tools ───────────────────────────────── */
.ppr-related-tools {
    display: flex; align-items: center; flex-wrap: wrap; gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--ppr-bg-elevated);
    border-radius: var(--ppr-radius-lg); margin-bottom: 2rem;
    border: 1px solid var(--ppr-border);
}
.ppr-related-label {
    display: flex; align-items: center; gap: 0.5rem;
    font-weight: 600; color: var(--ppr-text); font-size: 0.875rem;
}
.ppr-related-label svg { color: var(--ppr-primary); width: 16px; height: 16px; }
.ppr-related-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.ppr-related-link {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--ppr-bg-secondary);
    border-radius: var(--ppr-radius-full);
    color: var(--ppr-text-sec);
    text-decoration: none; font-size: 0.875rem; font-weight: 500;
    transition: all 0.2s ease; border: 1px solid var(--ppr-border);
}
.ppr-related-link:hover { background: var(--ppr-primary); color: white; border-color: var(--ppr-primary); transform: translateY(-2px); }
.ppr-related-link svg { width: 16px; height: 16px; }

/* ── Info Cards ──────────────────────────────────── */
.ppr-info-sections { display: flex; flex-direction: column; gap: 1.5rem; }
.ppr-info-card {
    background: var(--ppr-bg-elevated);
    border-radius: var(--ppr-radius-xl);
    padding: 2rem;
    border: 1px solid var(--ppr-border);
    transition: background-color var(--ppr-transition), border-color var(--ppr-transition);
}
.ppr-info-card h2 {
    display: flex; align-items: center; gap: 0.75rem;
    font-size: 1.25rem; color: var(--ppr-text); margin: 0 0 1.5rem;
}
.ppr-info-card h2 svg { color: var(--ppr-primary); width: 22px; height: 22px; flex-shrink: 0; }

/* Steps */
.ppr-steps { counter-reset: step; list-style: none; padding: 0; margin: 0 0 1.5rem; }
.ppr-steps li {
    position: relative; padding-left: 3.25rem; margin-bottom: 1rem;
    counter-increment: step; color: var(--ppr-text-sec); line-height: 1.65;
}
.ppr-steps li::before {
    content: counter(step); position: absolute; left: 0; top: 0;
    width: 2rem; height: 2rem; background: var(--ppr-primary); color: white;
    border-radius: var(--ppr-radius-full); display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.875rem; z-index: 1;
}
.ppr-steps li:not(:last-child)::after {
    content: ''; position: absolute;
    left: calc(1rem - 1px); top: 2rem; bottom: 0;
    width: 2px; background: var(--ppr-primary-light);
}
.ppr-steps li a { color: var(--ppr-primary); text-decoration: none; }
.ppr-steps li a:hover { text-decoration: underline; }

.ppr-tip {
    display: flex; align-items: flex-start; gap: 0.75rem;
    padding: 1rem 1.25rem; background: var(--ppr-warning-light);
    border-radius: var(--ppr-radius-md);
    font-size: 0.875rem; color: var(--ppr-text-sec); line-height: 1.6;
}
.ppr-tip svg { color: var(--ppr-warning); flex-shrink: 0; margin-top: 2px; }
.ppr-tip a { color: var(--ppr-warning); font-weight: 600; text-decoration: none; }
.ppr-tip a:hover { text-decoration: underline; }

/* Benefits Grid */
.ppr-benefits-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.ppr-benefit-item { display: flex; gap: 1rem; align-items: flex-start; }
.ppr-benefit-icon {
    width: 44px; height: 44px; background: var(--ppr-primary-light);
    border-radius: var(--ppr-radius-md);
    display: flex; align-items: center; justify-content: center;
    color: var(--ppr-primary); flex-shrink: 0;
}
.ppr-benefit-content h4 { margin: 0 0 0.35rem; font-size: 1rem; color: var(--ppr-text); }
.ppr-benefit-content p  { margin: 0; font-size: 0.875rem; color: var(--ppr-text-sec); line-height: 1.5; }

/* FAQ */
.ppr-faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item { border: 1px solid var(--ppr-border); border-radius: var(--ppr-radius-md); overflow: hidden; }
.faq-item:hover { border-color: var(--ppr-primary); }
.faq-question {
    width: 100%; display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 1.25rem; background: var(--ppr-bg-secondary); border: none;
    cursor: pointer; font-size: 0.975rem; font-weight: 500; color: var(--ppr-text);
    text-align: left; gap: 12px; transition: background 0.2s;
}
.faq-question:hover { background: var(--ppr-bg-tertiary); }
.faq-question span { flex: 1; }
.faq-question svg { flex-shrink: 0; color: var(--ppr-primary); width: 20px; height: 20px; transition: transform 0.3s; }
.faq-item.open .faq-question svg { transform: rotate(180deg); }
.faq-item.open .faq-question { background: var(--ppr-bg-elevated); border-bottom: 1px solid var(--ppr-border); }
.faq-answer { display: none; padding: 1rem 1.25rem; background: var(--ppr-bg-elevated); }
.faq-item.open .faq-answer { display: block; }
.faq-answer p { margin: 0; color: var(--ppr-text-sec); line-height: 1.7; font-size: 0.95rem; }
.faq-answer a { color: var(--ppr-primary); text-decoration: none; }
.faq-answer a:hover { text-decoration: underline; }

/* ── Animations ──────────────────────────────────── */
@keyframes ppr-spin    { to { transform: rotate(360deg); } }
@keyframes ppr-fadeIn  { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 900px) {
    .ppr-benefits-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .ppr-container { padding: 1rem; }
    .ppr-upload-section { padding: 2rem 1.25rem; }
    .ppr-upload-area { padding: 2.5rem 1rem; }
    .ppr-toolbar { padding: 0.75rem 1rem; }
    .ppr-doc-name { max-width: 130px; }
    .ppr-grid-wrap { padding: 1rem; }
    .ppr-pages-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 0.75rem; }
    .ppr-action-bar { flex-direction: column; padding: 1.25rem; }
    .ppr-btn { width: 100%; }
    .ppr-results-actions { flex-direction: column; }
    .ppr-results-actions .ppr-btn { width: 100%; }
    .ppr-related-tools { flex-direction: column; align-items: flex-start; }
    .ppr-info-card { padding: 1.5rem; }
    .ppr-hint-sep { display: none; }
    .ppr-hint-bar { padding: 0.75rem 1rem; }
}

@media (max-width: 480px) {
    .ppr-title-row { flex-direction: column; }
    .ppr-pages-grid { grid-template-columns: repeat(auto-fill, minmax(95px, 1fr)); }
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--ppr-bg); border-radius: 4px; }
::-webkit-scrollbar-thumb { background: var(--ppr-text-muted); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--ppr-text-sec); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}