/* ==========================================================================
   Add Scanned Signature Dedicated Studio Stylesheet (DocScan)
   Supports PDF, Word, Images, Multi-Page Signing, Draw Pad & Touch Drag
   ========================================================================== */

/* Page Hero */
.sign-page-hero {
    padding: 3.5rem 0 2rem 0;
    text-align: center;
}

.sign-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    background: #ffffff;
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
}

.sign-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.sign-breadcrumb a:hover {
    text-decoration: underline;
}

.sign-pill-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.75rem;
}

.sign-page-hero h1 {
    font-size: 2.35rem;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text-main);
    margin-bottom: 1rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.sign-page-hero .hero-lead {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 820px;
    margin: 0 auto 1.5rem auto;
    line-height: 1.65;
}

/* Tool Switcher Banner */
.sign-switcher-banner {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.6rem 1.25rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.sign-switcher-banner a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.sign-switcher-banner a:hover {
    text-decoration: underline;
}

/* Studio Layout Grid */
.sign-studio-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 2rem;
    align-items: start;
    margin-bottom: 4rem;
}

@media (max-width: 992px) {
    .sign-studio-grid {
        grid-template-columns: 1fr;
    }
}

/* Studio Left Column: Controls & Signature Options */
.sign-sidebar-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    position: sticky;
    top: 5rem;
}

/* Dropzone for Document Upload */
.sign-dropzone {
    background: #f8fafc;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
    margin-bottom: 1.25rem;
}

.sign-dropzone.dragover {
    border-color: var(--primary);
    background: #eff6ff;
}

.sign-dropzone.has-doc {
    border-color: #22c55e;
    background: #f0fdf4;
    padding: 1rem;
}

.sign-dropzone-icon {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.sign-dropzone-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.sign-dropzone-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

/* Action Buttons inside Dropzone */
.sign-doc-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sign-doc-actions .btn-primary,
.sign-doc-actions .btn-secondary {
    width: 100%;
    justify-content: center;
    padding: 0.55rem 0.85rem;
    font-size: 0.88rem;
}

/* Document Meta & Info */
.sign-doc-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    margin-top: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-main);
}

.sign-doc-info strong {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

/* Signature Options Section */
.sign-tools-section {
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: 1.25rem;
}

.sign-tools-section.disabled {
    opacity: 0.6;
    pointer-events: none;
}

.sign-tools-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sign-add-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.sign-add-buttons .btn-secondary {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 0.75rem 0.5rem;
    font-size: 0.82rem;
    text-align: center;
    border-radius: var(--radius-sm);
}

.sign-add-buttons .btn-secondary svg {
    color: var(--primary);
}

/* Placed Signatures List */
.sign-placed-list {
    margin-top: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-subtle);
    padding: 0.75rem;
    max-height: 180px;
    overflow-y: auto;
}

.sign-placed-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.45rem 0.65rem;
    margin-bottom: 0.4rem;
    font-size: 0.82rem;
}

.sign-placed-item:last-child {
    margin-bottom: 0;
}

.sign-placed-item.active {
    border-color: var(--primary);
    background: #eff6ff;
}

/* Studio Right Column: Interactive Document Canvas Viewer */
.sign-viewer-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

/* Viewer Toolbar */
.sign-viewer-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.6rem 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.sign-page-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
}

.sign-page-nav .btn-sm {
    padding: 0.35rem 0.65rem;
}

.sign-viewer-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Document Canvas Viewport Container */
.sign-viewport-container {
    width: 100%;
    min-height: 480px;
    background: #475569;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem 1rem;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow: auto;
    position: relative;
    user-select: none;
    -webkit-user-select: none;
}

/* Document Page Wrapper (Canvas + Signature Overlays) */
.sign-page-wrapper {
    position: relative;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    background: #ffffff;
    display: inline-block;
    max-width: 100%;
}

#signDocCanvas {
    display: block;
    max-width: 100%;
    height: auto;
    background: #ffffff;
}

.sign-viewport-placeholder {
    color: #ffffff;
    text-align: center;
    padding: 4rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

/* Interactive Signature Stamp Overlay */
.sign-stamp-overlay {
    position: absolute;
    box-sizing: border-box;
    cursor: move;
    touch-action: none;
    border: 1.5px dashed transparent;
    transition: border-color 0.1s ease;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sign-stamp-overlay:hover,
.sign-stamp-overlay.active {
    border-color: #2563eb;
    background: rgba(37, 99, 235, 0.04);
}

.sign-stamp-overlay img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    pointer-events: none;
}

/* Stamp Floating Action Bar */
.sign-stamp-bar {
    position: absolute;
    bottom: -38px;
    left: 50%;
    transform: translateX(-50%);
    background: #0f172a;
    color: #ffffff;
    border-radius: 9999px;
    padding: 0.2rem 0.6rem;
    display: none;
    align-items: center;
    gap: 0.4rem;
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    z-index: 50;
}

.sign-stamp-overlay.active .sign-stamp-bar {
    display: flex;
}

.sign-stamp-btn {
    background: transparent;
    border: none;
    color: #ffffff;
    cursor: pointer;
    padding: 0.15rem 0.4rem;
    font-size: 0.75rem;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.sign-stamp-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.sign-stamp-btn.btn-rot {
    color: #38bdf8;
}

.sign-stamp-btn.btn-del {
    color: #f87171;
}

/* Stamp Rotation Stem & Handle */
.sign-stamp-rot-stem {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 1.5px;
    height: 18px;
    background: #2563eb;
    display: none;
    z-index: 44;
    pointer-events: none;
}

.sign-stamp-rot-handle {
    position: absolute;
    top: -28px;
    left: 50%;
    transform: translateX(-50%);
    width: 18px;
    height: 18px;
    background: #ffffff;
    border: 2px solid #2563eb;
    border-radius: 9999px;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: grab;
    z-index: 46;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    color: #2563eb;
    touch-action: none;
}

.sign-stamp-rot-handle::after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
}

.sign-stamp-rot-handle:hover,
.sign-stamp-rot-handle:active {
    background: #2563eb;
    color: #ffffff;
    cursor: grabbing;
}

.sign-stamp-overlay.active .sign-stamp-rot-stem,
.sign-stamp-overlay.active .sign-stamp-rot-handle {
    display: flex;
}

/* Stamp Resize Handles */
.sign-stamp-handle {
    position: absolute;
    width: 11px;
    height: 11px;
    background: #ffffff;
    border: 2px solid #2563eb;
    border-radius: 2px;
    display: none;
    z-index: 45;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.sign-stamp-handle::after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
}

.sign-stamp-overlay.active .sign-stamp-handle {
    display: block;
}

.sign-stamp-handle.handle-nw { top: -6px; left: -6px; cursor: nwse-resize; }
.sign-stamp-handle.handle-ne { top: -6px; right: -6px; cursor: nesw-resize; }
.sign-stamp-handle.handle-se { bottom: -6px; right: -6px; cursor: nwse-resize; }
.sign-stamp-handle.handle-sw { bottom: -6px; left: -6px; cursor: nesw-resize; }

/* Multi-Page Carousel Bar */
.sign-thumbnails-bar {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    padding: 0.85rem 0.5rem 0.5rem 0.5rem;
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.sign-thumb-item {
    flex: 0 0 70px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: #f1f5f9;
    cursor: pointer;
    padding: 0.2rem;
    text-align: center;
    transition: all 0.15s ease;
}

.sign-thumb-item:hover {
    border-color: var(--primary);
}

.sign-thumb-item.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.25);
    background: #eff6ff;
}

.sign-thumb-item canvas,
.sign-thumb-item img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.sign-thumb-item span {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Export Bottom Bar */
.sign-export-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.sign-export-bar .btn-primary,
.sign-export-bar .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

/* ==========================================================================
   Draw Signature Modal (Signature Pad)
   ========================================================================== */
.sign-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.sign-modal-backdrop.hidden {
    display: none;
}

.sign-modal-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    max-width: 580px;
    width: 100%;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.sign-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.sign-modal-header h3 {
    margin: 0;
    font-size: 1.15rem;
    color: var(--text-main);
}

.sign-modal-body {
    padding: 1.25rem;
}

/* Signature Drawing Canvas */
.sign-pad-wrap {
    background: #fafaf9;
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-md);
    position: relative;
    touch-action: none;
    margin-bottom: 1rem;
    cursor: crosshair;
}

#signPadCanvas {
    display: block;
    width: 100%;
    height: 220px;
    border-radius: var(--radius-md);
}

.sign-pad-baseline {
    position: absolute;
    bottom: 45px;
    left: 10%;
    right: 10%;
    border-bottom: 1px dashed rgba(148, 163, 184, 0.6);
    pointer-events: none;
}

.sign-pad-baseline span {
    position: absolute;
    bottom: 4px;
    left: 0;
    font-size: 0.75rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Signature Pad Controls (Color & Width) */
.sign-pad-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.sign-colors-row {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.sign-color-dot {
    width: 24px;
    height: 24px;
    border-radius: 9999px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.15s ease;
}

.sign-color-dot:hover {
    transform: scale(1.15);
}

.sign-color-dot.active {
    border-color: #2563eb;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.3);
}

.sign-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
    background: #f8fafc;
}

/* ==========================================================================
   Semantic SEO Content Styling
   ========================================================================== */
.section-sign-content {
    width: 100%;
    padding: 4.5rem 0;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
}

.section-sign-content.section-sign-alt,
.section-sign-content:nth-of-type(even) {
    background-color: var(--bg-main);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.sign-guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.sign-guide-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.sign-guide-card h3 {
    font-size: 1.1rem;
    margin-top: 0;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.sign-guide-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ==========================================================================
   Mobile-Friendly Responsive Rules
   ========================================================================== */
@media (max-width: 640px) {
    .sign-page-hero {
        padding: 1.75rem 0 1rem 0;
    }

    .sign-page-hero h1 {
        font-size: 1.6rem;
        line-height: 1.3;
        margin-bottom: 0.75rem;
    }

    .sign-page-hero .hero-lead {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 1.25rem;
    }

    .sign-switcher-banner {
        font-size: 0.82rem;
        padding: 0.6rem 0.9rem;
        width: 100%;
        margin-bottom: 1.5rem;
    }

    .sign-sidebar-card,
    .sign-viewer-card {
        padding: 1.15rem 1rem;
        border-radius: var(--radius-md);
    }

    .sign-viewer-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.6rem;
    }

    .sign-viewer-actions {
        width: 100%;
        justify-content: space-between;
    }

    .sign-viewport-container {
        padding: 0.75rem 0.5rem;
        min-height: 360px;
    }

    .sign-export-bar {
        flex-direction: column;
    }

    .sign-export-bar button {
        width: 100%;
        justify-content: center;
    }
}