:root {
    --fs-brand: #4f46e5;
    --fs-brand-hover: #4338ca;
    --fs-brand-light: #f5f3ff;
    --fs-surface-card: #ffffff;
    --fs-surface-subtle: #f8fafc;
    --fs-surface-border: #e2e8f0;
    --fs-text-heading: #0f172a;
    --fs-text-body: #334155;
    --fs-text-muted: #64748b;
    --fs-radius-lg: 12px;
    --fs-radius-md: 8px;
    --fs-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.oneclickformsync-admin-wrap {
    --primary: var(--fs-brand);
    --primary-hover: var(--fs-brand-hover);
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg-card: var(--fs-surface-card);
    --text-main: var(--fs-text-heading);
    --text-muted: var(--fs-text-muted);
    --border-color: var(--fs-surface-border);
    --radius: var(--fs-radius-md);
    --shadow: var(--fs-shadow-sm);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08);

    margin: 20px 20px 0 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: var(--text-main);
}

/* WordPress Admin CSS Overrides & Reset for 1-Click Form Sync */
.oneclickformsync-admin-wrap button,
.oneclickformsync-admin-wrap input[type=button],
.oneclickformsync-admin-wrap input[type=submit] {
    border: none !important;
    box-shadow: none !important;
    outline: none !important;
    text-shadow: none !important;
    height: auto !important;
    background: transparent;
}

.oneclickformsync-admin-wrap button:focus,
.oneclickformsync-admin-wrap button:hover,
.oneclickformsync-admin-wrap input[type=submit]:focus,
.oneclickformsync-admin-wrap input[type=submit]:hover {
    outline: none !important;
    box-shadow: none !important;
}

.oneclickformsync-admin-wrap input[type=text],
.oneclickformsync-admin-wrap input[type=password],
.oneclickformsync-admin-wrap input[type=email],
.oneclickformsync-admin-wrap input[type=number],
.oneclickformsync-admin-wrap select,
.oneclickformsync-admin-wrap textarea {
    border: 1px solid #cbd5e1 !important;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05) !important;
    outline: none !important;
    height: auto !important;
    max-width: 100% !important;
    background-color: #ffffff !important;
    color: #0f172a !important;
    border-radius: 0.75rem !important;
    padding: 0.625rem 0.875rem !important;
    font-size: 0.875rem !important;
    transition: all 0.2s ease-in-out !important;
}

.oneclickformsync-admin-wrap input[type=text]:focus,
.oneclickformsync-admin-wrap input[type=password]:focus,
.oneclickformsync-admin-wrap input[type=email]:focus,
.oneclickformsync-admin-wrap input[type=number]:focus,
.oneclickformsync-admin-wrap select:focus,
.oneclickformsync-admin-wrap textarea:focus {
    border-color: #4f46e5 !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.18) !important;
    outline: none !important;
}

.oneclickformsync-admin-wrap input[type=checkbox] {
    border: 1px solid #cbd5e1 !important;
    border-radius: 0.25rem !important;
    width: 1.1rem !important;
    height: 1.1rem !important;
    margin-top: 0.125rem !important;
    box-shadow: none !important;
}

.oneclickformsync-admin-wrap input[type=checkbox]:checked {
    background-color: #4f46e5 !important;
    border-color: #4f46e5 !important;
}

/* Global Reusable Design System Component Classes */
.fs-card {
    background: var(--fs-surface-card);
    border: 1px solid var(--fs-surface-border);
    border-radius: var(--fs-radius-lg);
    padding: 24px;
    box-shadow: var(--fs-shadow-sm);
    transition: all 0.2s ease;
}

.fs-card-hover:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    border-color: #cbd5e1;
}

.fs-btn,
button.fs-btn,
a.fs-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    padding: 10px 18px !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    border-radius: 12px !important;
    border: 0 !important;
    cursor: pointer !important;
    text-decoration: none !important;
    transition: all 0.2s ease-in-out !important;
    line-height: 1.3 !important;
}

.fs-btn-primary,
button.fs-btn-primary,
a.fs-btn-primary {
    background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%) !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 2px 5px rgba(79, 70, 229, 0.25) !important;
}

.fs-btn-primary:hover,
button.fs-btn-primary:hover,
a.fs-btn-primary:hover {
    background: linear-gradient(135deg, #4338ca 0%, #3730a3 100%) !important;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35) !important;
    color: #ffffff !important;
    transform: translateY(-1px);
}

.fs-btn-secondary,
button.fs-btn-secondary,
a.fs-btn-secondary {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    color: #334155 !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05) !important;
}

.fs-btn-secondary:hover,
button.fs-btn-secondary:hover,
a.fs-btn-secondary:hover {
    background: #f8fafc !important;
    border-color: #cbd5e1 !important;
    color: #0f172a !important;
}

.fs-btn-danger,
button.fs-btn-danger,
a.fs-btn-danger {
    background: #ef4444 !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2) !important;
}

.fs-btn-danger:hover,
button.fs-btn-danger:hover,
a.fs-btn-danger:hover {
    background: #dc2626 !important;
    color: #ffffff !important;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.3) !important;
}

.fs-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
}

.fs-badge-success {
    background-color: #ecfdf5;
    color: #047857;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.fs-badge-warning {
    background-color: #fffbeb;
    color: #b45309;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.fs-badge-danger {
    background-color: #fef2f2;
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.fs-badge-neutral {
    background-color: #f1f5f9;
    color: #475569;
    border: 1px solid #e2e8f0;
}

.fs-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--fs-text-heading);
    margin: 0 0 16px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.fs-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--fs-surface-border);
    border-radius: var(--fs-radius-md);
    font-size: 14px;
    color: var(--fs-text-heading);
    background: #ffffff;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.fs-input:focus {
    border-color: var(--fs-brand);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.oneclickformsync-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    padding: 24px;
    border-radius: var(--radius);
    color: #ffffff;
    box-shadow: var(--shadow);
}

.oneclickformsync-header h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
    color: #ffffff;
}

.oneclickformsync-header p {
    margin: 4px 0 0 0;
    opacity: 0.9;
    font-size: 14px;
}

.oneclickformsync-nav-container {
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.oneclickformsync-nav-tab {
    display: inline-block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s ease;
}

.oneclickformsync-nav-tab:hover {
    color: var(--primary);
}

.oneclickformsync-nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.oneclickformsync-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.oneclickformsync-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.oneclickformsync-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.oneclickformsync-card h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
}

.oneclickformsync-stat-val {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.oneclickformsync-stat-lbl {
    font-size: 13px;
    color: var(--text-muted);
}

.oneclickformsync-card-form label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 6px;
}

.oneclickformsync-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 16px;
    transition: border-color 0.2s ease;
}

.oneclickformsync-input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.oneclickformsync-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

.oneclickformsync-btn-primary {
    background-color: var(--primary);
    color: #ffffff;
}

.oneclickformsync-btn-primary:hover {
    background-color: var(--primary-hover);
    color: #ffffff;
}

.oneclickformsync-btn-secondary {
    background-color: #ffffff;
    border-color: var(--border-color);
    color: var(--text-main);
}

.oneclickformsync-btn-secondary:hover {
    background-color: #f9fafb;
    border-color: #d1d5db;
}

.oneclickformsync-btn-danger {
    background-color: var(--danger);
    color: #ffffff;
}

.oneclickformsync-btn-danger:hover {
    background-color: #dc2626;
    color: #ffffff;
}

.oneclickformsync-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.oneclickformsync-badge-success {
    background-color: #ecfdf5;
    color: var(--success);
}

.oneclickformsync-badge-error {
    background-color: #fef2f2;
    color: var(--danger);
}

.oneclickformsync-badge-warning {
    background-color: #fffbeb;
    color: var(--warning);
}

.oneclickformsync-table-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.oneclickformsync-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

.oneclickformsync-table th {
    background-color: #f9fafb;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-muted);
}

.oneclickformsync-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.oneclickformsync-table tr:last-child td {
    border-bottom: none;
}

.oneclickformsync-table tr:hover td {
    background-color: #f9fafb;
}

.oneclickformsync-alert {
    padding: 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    border-left: 4px solid transparent;
}

.oneclickformsync-alert-success {
    background-color: #ecfdf5;
    border-left-color: var(--success);
    color: #065f46;
}

.oneclickformsync-alert-error {
    background-color: #fef2f2;
    border-left-color: var(--danger);
    color: #991b1b;
}

.oneclickformsync-alert-warning {
    background-color: #fffbeb;
    border-left-color: var(--warning);
    color: #92400e;
}

.oneclickformsync-guide-step {
    display: flex;
    margin-bottom: 20px;
}

.oneclickformsync-guide-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary);
    color: #ffffff;
    font-weight: 700;
    margin-right: 16px;
    flex-shrink: 0;
}

.oneclickformsync-guide-text h4 {
    margin: 0 0 6px 0;
    font-size: 15px;
    font-weight: 600;
}

.oneclickformsync-guide-text p {
    margin: 0;
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
}

.oneclickformsync-status-check {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.oneclickformsync-status-check:last-child {
    border-bottom: none;
}

.oneclickformsync-status-label {
    font-weight: 600;
}

.oneclickformsync-status-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Collapsible Payload Disclosure */
.oneclickformsync-payload-details {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #ffffff;
    overflow: hidden;
}

.oneclickformsync-payload-summary {
    cursor: pointer;
    user-select: none;
    background: #f9fafb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    outline: none;
    transition: background-color 0.15s ease;
    list-style: none;
}

.oneclickformsync-payload-summary::-webkit-details-marker {
    display: none;
}

.oneclickformsync-payload-summary:hover {
    background-color: #f3f4f6;
}

.oneclickformsync-payload-details[open] .oneclickformsync-payload-arrow {
    transform: rotate(90deg);
}

.oneclickformsync-payload-details[open] .oneclickformsync-payload-summary {
    border-bottom: 1px solid var(--border-color);
}

.oneclickformsync-payload-arrow {
    transition: transform 0.2s ease;
    display: inline-block;
    vertical-align: middle;
}

.oneclickformsync-payload-content {
    background: #f8f9fa;
    font-family: monospace;
    overflow-x: auto;
}

/* Settings Page UX/UI Enhancements */
.oneclickformsync-settings-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 14px 0;
}

.oneclickformsync-settings-section-title svg {
    color: var(--primary);
    flex-shrink: 0;
}

label.oneclickformsync-provider-card,
.oneclickformsync-card-form label.oneclickformsync-provider-card,
.oneclickformsync-provider-card {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    gap: 16px;
    padding: 16px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    box-sizing: border-box;
    margin-bottom: 0 !important;
}

label.oneclickformsync-provider-card:hover,
.oneclickformsync-provider-card:hover {
    border-color: #c7d2fe;
    background: #fcfcfd;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
}

label.oneclickformsync-provider-card.is-checked,
.oneclickformsync-provider-card.is-checked {
    border-color: var(--primary);
    background: #f5f3ff;
    box-shadow: 0 0 0 1px var(--primary);
}

.oneclickformsync-provider-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
    margin: 0 !important;
    display: inline-flex;
    align-items: center;
}

.oneclickformsync-provider-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

.oneclickformsync-provider-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* Modern Toggle Switch Component */
.oneclickformsync-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
    margin: 0;
}

.oneclickformsync-switch input {
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0 !important;
    position: absolute;
}

.oneclickformsync-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e1;
    transition: .25s ease;
    border-radius: 24px;
}

.oneclickformsync-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .25s ease;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.oneclickformsync-switch input:checked + .oneclickformsync-slider {
    background-color: var(--primary);
}

.oneclickformsync-switch input:checked + .oneclickformsync-slider:before {
    transform: translateX(20px);
}

.oneclickformsync-field-group {
    margin-bottom: 20px;
}

.oneclickformsync-field-group label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--text-main);
}

.oneclickformsync-field-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
    line-height: 1.4;
}

.oneclickformsync-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.oneclickformsync-input-wrapper .oneclickformsync-input {
    margin-bottom: 0;
    padding-right: 44px;
}

.oneclickformsync-toggle-secret {
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.oneclickformsync-toggle-secret:hover {
    color: var(--primary);
    background-color: #f1f5f9;
}

.oneclickformsync-copy-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 12px 14px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 12px;
    color: #334155;
    word-break: break-all;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 12px;
}

.oneclickformsync-copy-btn {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #475569;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    flex-shrink: 0;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.oneclickformsync-copy-btn:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.oneclickformsync-copy-btn.copied {
    background: var(--success) !important;
    color: #ffffff !important;
    border-color: var(--success) !important;
}

.oneclickformsync-steps-list {
    margin: 14px 0 0 0;
    padding-left: 18px;
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.6;
}

.oneclickformsync-steps-list li {
    margin-bottom: 6px;
}