/* ============================================================
   Sign PDF Tool — sign-pdf.css
   Prefix: sp-
   Accent: var(--primary-color, #6366F1)  (site indigo)
   Accent RGB: 99, 102, 241
   ============================================================ */

/* ── Accent override ───────────────────────────────────────── */
.sp-section {
    --tool-accent: var(--primary-color, #6366F1);
    --tool-accent-rgb: 99, 102, 241;
    padding: 40px 0 80px;
}

/* ── Badge ─────────────────────────────────────────────────── */
.sp-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.22);
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-color, #6366F1);
    margin-bottom: 12px;
}

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

/* ── Upload Zone ───────────────────────────────────────────── */
.sp-upload-zone {
    display: block;
    border: 2px dashed rgba(99, 102, 241, 0.32);
    border-radius: 16px;
    background: rgba(99, 102, 241, 0.03);
    padding: 56px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    outline: none;
}

.sp-upload-zone:hover,
.sp-upload-zone:focus-visible {
    border-color: rgba(99, 102, 241, 0.6);
    background: rgba(99, 102, 241, 0.07);
}

.sp-upload-zone.sp-drag-over {
    border-color: var(--primary-color, #6366F1);
    background: rgba(99, 102, 241, 0.1);
}

.sp-upload-icon {
    font-size: 3rem;
    color: var(--primary-color, #6366F1);
    opacity: 0.65;
    margin-bottom: 14px;
    display: block;
}

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

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

.sp-upload-formats {
    font-size: 0.8125rem;
    color: var(--text-tertiary, #9CA3AF);
    margin: 0;
}

/* ── Signature panel layout ────────────────────────────────── */
.sp-sig-panel {
    display: block;
}

.sp-sig-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 24px;
    align-items: start;
}

/* ── Signature creator (left panel) ────────────────────────── */
.sp-sig-creator {
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 14px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ── Mode tabs ─────────────────────────────────────────────── */
.sp-mode-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    background: var(--bg-secondary, #F9FAFB);
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 10px;
    padding: 4px;
}

.sp-mode-tab {
    flex: 1 0 calc(33% - 3px);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 7px 10px;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
}

.sp-mode-tab--active {
    background: var(--primary-color, #6366F1);
    color: #fff;
}

.sp-mode-tab:not(.sp-mode-tab--active):hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--primary-color, #6366F1);
}

/* ── Mode panes ────────────────────────────────────────────── */
.sp-mode-pane {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── Draw pane ─────────────────────────────────────────────── */
.sp-draw-wrap {
    position: relative;
    border: 1.5px solid var(--border-color, #E5E7EB);
    border-radius: 10px;
    background: #fff;
    overflow: hidden;
}

#sp-draw-canvas {
    display: block;
    width: 100%;
    height: 160px;
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24'%3E%3Cpath d='M3 17.25V21h3.75L17.81 9.94l-3.75-3.75L3 17.25zM20.71 7.04c.39-.39.39-1.02 0-1.41l-2.34-2.34c-.39-.39-1.02-.39-1.41 0l-1.83 1.83 3.75 3.75 1.83-1.83z' fill='%23374151'/%3E%3C/svg%3E") 2 18, crosshair;
    touch-action: none;
}

.sp-draw-hint {
    position: absolute;
    bottom: 8px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-tertiary, #9CA3AF);
    pointer-events: none;
    user-select: none;
}

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

/* ── Type pane ─────────────────────────────────────────────── */
.sp-type-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 8px;
    background: var(--bg-input, #fff);
    color: var(--text-primary);
    font-size: 1.125rem;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.15s;
}

.sp-type-input:focus {
    border-color: var(--primary-color, #6366F1);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.sp-font-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.sp-type-color-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 2px;
}

.sp-font-btn {
    padding: 8px 10px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 7px;
    background: var(--bg-secondary, #F9FAFB);
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sp-font-btn:hover {
    border-color: rgba(99, 102, 241, 0.4);
    color: var(--primary-color, #6366F1);
}

.sp-font-btn.sp-font-active {
    border-color: var(--primary-color, #6366F1);
    background: rgba(99, 102, 241, 0.06);
    color: var(--primary-color, #6366F1);
    font-weight: 600;
}

.sp-type-preview-wrap {
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 8px;
    background: #fff;
    overflow: hidden;
}

#sp-type-preview-canvas {
    display: block;
    width: 100%;
    height: auto;
}

/* ── Upload pane ───────────────────────────────────────────── */
.sp-img-upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    border: 2px dashed rgba(99, 102, 241, 0.3);
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.03);
    padding: 24px 12px;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    text-align: center;
}

.sp-img-upload-zone:hover,
.sp-img-upload-zone:focus-visible {
    border-color: rgba(99, 102, 241, 0.55);
    background: rgba(99, 102, 241, 0.07);
}

.sp-img-upload-zone.sp-img-loaded .sp-img-upload-icon {
    color: #16A34A;
}

.sp-img-upload-zone.sp-img-loaded .sp-img-upload-text {
    color: var(--text-primary);
    font-weight: 600;
}

.sp-img-upload-icon {
    font-size: 2rem;
    color: var(--primary-color, #6366F1);
    opacity: 0.65;
}

.sp-img-upload-text {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 500;
}

.sp-img-upload-hint {
    font-size: 0.75rem;
    color: var(--text-tertiary, #9CA3AF);
    margin: 0;
}

/* ── Date pane ─────────────────────────────────────────────── */
.sp-date-input {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-secondary, #F9FAFB);
    box-sizing: border-box;
    margin-bottom: 8px;
}

.sp-date-opts-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.sp-date-fmt-select {
    padding: 4px 8px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 6px;
    font-size: 0.85rem;
    background: var(--bg-secondary, #F9FAFB);
    color: var(--text-primary);
    cursor: pointer;
}

#sp-date-preview-canvas {
    display: block;
    width: 100%;
    height: auto;
}

/* ── Initials pane ─────────────────────────────────────────── */
.sp-initials-opts-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

#sp-initials-preview-canvas {
    display: block;
    width: 100%;
    height: auto;
}

/* ── Shared form elements ──────────────────────────────────── */
.sp-prop-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sp-val-badge {
    display: inline-block;
    min-width: 28px;
    padding: 1px 6px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 4px;
    color: var(--primary-color, #6366F1);
    font-weight: 700;
    font-size: 0.75rem;
    text-align: center;
}

.sp-color-input {
    width: 36px;
    height: 32px;
    padding: 2px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 6px;
    cursor: pointer;
    background: var(--bg-input, #fff);
}

.sp-ghost-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 6px;
    background: var(--bg-secondary, #F9FAFB);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.sp-ghost-btn:hover {
    border-color: #DC2626;
    color: #DC2626;
}

.sp-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--border-color, #E5E7EB);
    cursor: pointer;
    outline: none;
}

.sp-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color, #6366F1);
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(99, 102, 241, 0.4);
}

.sp-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color, #6366F1);
    border: none;
    cursor: pointer;
}

/* ── Saved signature strip ──────────────────────────────────── */
.sp-saved-strip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 8px;
    background: rgba(99, 102, 241, 0.04);
}

.sp-saved-left {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color, #6366F1);
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 0;
}

.sp-saved-label {
    white-space: nowrap;
}

.sp-saved-thumb {
    height: 30px;
    max-width: 90px;
    object-fit: contain;
    border-radius: 4px;
    border: 1px solid var(--border-color, #E5E7EB);
    background: #fff;
}

.sp-saved-right {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.sp-use-saved-btn {
    color: var(--primary-color, #6366F1);
    border-color: rgba(99, 102, 241, 0.3);
    font-size: 0.78rem;
    padding: 4px 8px;
}

.sp-delete-saved-btn {
    color: var(--text-tertiary, #9CA3AF);
    padding: 4px 7px;
}

.sp-delete-saved-btn:hover {
    color: #DC2626;
    border-color: rgba(220, 38, 38, 0.3);
}

.sp-save-sig-btn {
    color: var(--primary-color, #6366F1);
    font-size: 0.78rem;
    padding: 3px 8px;
    margin-left: auto;
}

/* ── Saved signature strip ──────────────────────────────────── */
.sp-saved-strip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 8px;
    background: rgba(99, 102, 241, 0.04);
}

.sp-saved-left {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color, #6366F1);
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 0;
}

.sp-saved-label {
    white-space: nowrap;
}

.sp-saved-thumb {
    height: 30px;
    max-width: 90px;
    object-fit: contain;
    border-radius: 4px;
    border: 1px solid var(--border-color, #E5E7EB);
    background: #fff;
}

.sp-saved-right {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.sp-use-saved-btn {
    color: var(--primary-color, #6366F1);
    border-color: rgba(99, 102, 241, 0.3);
    font-size: 0.78rem;
    padding: 4px 8px;
}

.sp-delete-saved-btn {
    color: var(--text-tertiary, #9CA3AF);
    padding: 4px 7px;
}

.sp-delete-saved-btn:hover {
    color: #DC2626;
    border-color: rgba(220, 38, 38, 0.3);
}

.sp-save-sig-btn {
    color: var(--primary-color, #6366F1);
    font-size: 0.78rem;
    padding: 3px 8px;
    margin-left: auto;
}

.sp-sig-size-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* ── Place on page button ───────────────────────────────────── */
.sp-btn-place {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--primary-color, #6366F1);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.sp-btn-place:hover {
    background: var(--primary-hover, #4F46E5);
}

.sp-btn-place:disabled {
    background: var(--text-tertiary, #9CA3AF);
    cursor: not-allowed;
}

/* ── Preview column (right) ────────────────────────────────── */
.sp-sig-preview {
    min-width: 0;
}

.sp-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-secondary, #F9FAFB);
    border: 1px solid var(--border-color, #E5E7EB);
    border-bottom: none;
    border-radius: 12px 12px 0 0;
}

.sp-preview-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sp-preview-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sp-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 6px;
    background: var(--bg-card, #fff);
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.sp-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.sp-nav-btn:not(:disabled):hover {
    border-color: var(--primary-color, #6366F1);
    color: var(--primary-color, #6366F1);
}

.sp-page-indicator {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    min-width: 80px;
    text-align: center;
}

.sp-canvas-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 40px;
    background: var(--bg-secondary, #F9FAFB);
    border: 1px solid var(--border-color, #E5E7EB);
    border-top: none;
    border-radius: 0 0 12px 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.sp-canvas-loading[hidden] {
    display: none;
}

.sp-spin {
    font-size: 1.5rem;
    color: var(--primary-color, #6366F1);
    animation: sp-spin 1s linear infinite;
    display: block;
}

@keyframes sp-spin {
    to {
        transform: rotate(360deg);
    }
}

/* Canvas wrap: PDF canvas + draggable signature elements */
.sp-canvas-wrap {
    position: relative;
    border: 1px solid var(--border-color, #E5E7EB);
    border-top: none;
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    background: var(--bg-secondary, #F9FAFB);
    min-height: 200px;
}

#sp-page-canvas {
    display: block;
    width: 100%;
    height: auto;
}

/* ── Signature overlay (draggable div over the canvas) ─────── */
.sp-sig-overlay {
    position: absolute;
    cursor: move;
    user-select: none;
    touch-action: none;
}

.sp-sig-overlay img {
    display: block;
    width: 100%;
    height: auto;
    pointer-events: none;
}

/* Resize handle on bottom-right corner */
.sp-sig-overlay .sp-sig-resize {
    position: absolute;
    bottom: -5px;
    right: -5px;
    width: 14px;
    height: 14px;
    background: var(--primary-color, #6366F1);
    border-radius: 50%;
    cursor: nwse-resize;
    border: 2px solid #fff;
    pointer-events: all;
}

/* Remove button (×) in top-right corner */
.sp-sig-overlay .sp-sig-remove {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 18px;
    height: 18px;
    background: #DC2626;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 50%;
    font-size: 0.65rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    line-height: 1;
    pointer-events: all;
}

.sp-sig-overlay .sp-sig-rotate {
    position: absolute;
    top: -8px;
    left: -8px;
    width: 18px;
    height: 18px;
    background: var(--primary-color, #6366F1);
    color: #fff;
    border: 2px solid #fff;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    line-height: 1;
    pointer-events: all;
    user-select: none;
}

/* Hover highlight ring */
.sp-sig-overlay:hover {
    outline: 1.5px dashed rgba(99, 102, 241, 0.6);
    outline-offset: 2px;
}

/* ── Action bar ────────────────────────────────────────────── */
.sp-action-bar {
    position: sticky;
    bottom: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
    padding: 12px 16px;
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 12px;
    box-shadow: 0 -2px 10px rgba(99, 102, 241, 0.08);
}

.sp-action-left,
.sp-action-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.sp-change-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 8px;
    background: var(--bg-secondary, #F9FAFB);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
    text-decoration: none;
}

.sp-change-btn:hover {
    border-color: var(--primary-color, #6366F1);
    color: var(--primary-color, #6366F1);
}

.sp-sig-count-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-color, #6366F1);
}

.sp-sig-count-badge[hidden] {
    display: none;
}

.sp-filename-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.sp-filename-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.sp-filename-wrap {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-secondary, #F9FAFB);
    transition: border-color 0.15s;
}

.sp-filename-wrap:focus-within {
    border-color: var(--primary-color, #6366F1);
    background: #fff;
}

.sp-filename-icon {
    padding: 0 6px 0 10px;
    font-size: 0.875rem;
    color: var(--text-tertiary, #9CA3AF);
    flex-shrink: 0;
}

.sp-filename-input {
    padding: 8px 10px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.875rem;
    min-width: 150px;
    max-width: 220px;
    outline: none;
}

.sp-filename-ext {
    padding: 8px 10px 8px 4px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--bg-secondary, #F9FAFB);
    border-left: 1px solid var(--border-color, #E5E7EB);
    white-space: nowrap;
}

.sp-btn-apply {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    background: var(--primary-color, #6366F1);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s, box-shadow 0.2s;
    white-space: nowrap;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.35), 0 1px 2px rgba(99, 102, 241, 0.2);
}

.sp-btn-apply:hover {
    opacity: 0.88;
}

.sp-btn-apply:active {
    transform: scale(0.98);
}

.sp-btn-apply:disabled {
    background: var(--text-tertiary, #9CA3AF);
    cursor: not-allowed;
    transform: none;
}

/* ── Status ────────────────────────────────────────────────── */
.sp-status {
    margin-top: 14px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
}

.sp-status[hidden] {
    display: none;
}

.sp-status--success {
    background: rgba(22, 163, 74, 0.08);
    border: 1px solid rgba(22, 163, 74, 0.25);
    color: #15803D;
}

.sp-status--error {
    background: rgba(220, 38, 38, 0.08);
    border: 1px solid rgba(220, 38, 38, 0.25);
    color: #B91C1C;
}

.sp-status--info {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.25);
    color: #1D4ED8;
}

/* ── Progress bar ──────────────────────────────────────────── */
.sp-progress-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 14px;
}

.sp-progress-wrap[hidden] {
    display: none;
}

.sp-progress-bar {
    flex: 1;
    height: 6px;
    background: var(--border-color, #E5E7EB);
    border-radius: 3px;
    overflow: hidden;
}

.sp-progress-fill {
    height: 100%;
    width: 0;
    background: var(--primary-color, #6366F1);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.sp-progress-text {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 150px;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 960px) {
    .sp-sig-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .sp-section {
        padding: 24px 0 60px;
    }

    .sp-upload-zone {
        padding: 40px 16px;
    }

    .sp-action-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .sp-action-right {
        flex-direction: column;
        align-items: stretch;
    }

    .sp-btn-apply {
        justify-content: center;
    }

    .sp-change-btn {
        justify-content: center;
    }

    .sp-filename-input {
        min-width: 0;
        flex: 1;
    }

    .sp-preview-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}