:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #eef2ff;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --bg-body: #f8fafc;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

body.modal-open { overflow: hidden; }

/* --- Login Page --- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    padding: 20px;
}

.login-card {
    background: white;
    width: 100%;
    max-width: 420px;
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.login-card h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}

.login-card p {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.login-card .logo-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 24px;
}

/* --- Sidebar & Layout --- */
.layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 50;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header .logo {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.sidebar-header span {
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.5px;
}

.nav-menu {
    flex: 1;
    padding: 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 12px;
    margin-bottom: 4px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-body);
    color: var(--text-main);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-item i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px;
    min-width: 0;
}

/* --- Components --- */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 4px;
}

.stat-info p {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
}

.card {
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.card-header h2 {
    font-size: 18px;
    font-weight: 700;
}

.card-body {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-family: inherit;
    font-size: 15px;
    transition: all 0.2s;
    background: #fff;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 15px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-body);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

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

.btn-sm {
    min-height: 34px;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
}

/* --- Checkin Reward Pool --- */
.checkin-manager-header,
.checkin-header-actions,
.checkin-sync-row,
.checkin-sync-url-row {
    display: flex;
    align-items: center;
}

.checkin-manager-header {
    justify-content: space-between;
    gap: 20px;
}

.checkin-manager-header p {
    margin-top: 4px;
    color: var(--text-muted);
    font-size: 13px;
}

.checkin-header-actions { gap: 8px; }

.checkin-sync-row {
    justify-content: space-between;
    gap: 18px;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #f8fafc;
}

.checkin-sync-row > div { min-width: 0; flex: 1; }
.checkin-field-label { display: block; margin-bottom: 6px; color: var(--text-muted); font-size: 12px; font-weight: 700; }
.checkin-sync-url-row { gap: 8px; }
.checkin-sync-url-row input { height: 38px; padding: 8px 10px; border-radius: 6px; background: #fff; font-family: Consolas, monospace; font-size: 12px; }

.checkin-campaign-settings {
    display: grid;
    grid-template-columns: minmax(220px, 1.4fr) minmax(140px, .6fr) minmax(210px, 1fr) minmax(210px, 1fr);
    gap: 14px;
    margin-top: 18px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
}
.checkin-campaign-settings .form-group { margin: 0; }
.checkin-campaign-settings input { height: 38px; }

.checkin-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 18px 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.checkin-summary > div { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding: 13px 16px; }
.checkin-summary > div + div { border-left: 1px solid var(--border); }
.checkin-summary span { color: var(--text-muted); font-size: 12px; }
.checkin-summary strong { color: var(--text-main); font-size: 20px; }

.checkin-reward-columns,
.checkin-reward-row {
    min-width: 900px;
    display: grid;
    grid-template-columns: 78px minmax(250px, 1.6fr) minmax(180px, 1fr) 150px 54px 38px;
    align-items: center;
    gap: 12px;
}

.checkin-reward-columns {
    padding: 9px 12px;
    color: var(--text-muted);
    background: #f1f5f9;
    border: 1px solid var(--border);
    border-bottom: 0;
    border-radius: 8px 8px 0 0;
    font-size: 11px;
    font-weight: 800;
}

.checkin-reward-list { overflow-x: auto; border: 1px solid var(--border); border-radius: 0 0 8px 8px; }
.checkin-reward-row { min-height: 88px; padding: 10px 12px; background: #fff; transition: opacity .2s, background-color .2s; }
.checkin-reward-row + .checkin-reward-row { border-top: 1px solid var(--border); }
.checkin-reward-row.is-disabled { opacity: .58; background: #f8fafc; }
.checkin-reward-order { display: flex; gap: 5px; }
.checkin-reward-order .btn:disabled { cursor: not-allowed; opacity: .35; }

.checkin-reward-identity { min-width: 0; display: grid; grid-template-columns: 38px minmax(0, 1fr); align-items: center; gap: 9px; }
.checkin-reward-identity > input[type="color"] { width: 38px; height: 38px; padding: 3px; border-radius: 6px; cursor: pointer; }
.checkin-reward-identity > div { min-width: 0; display: grid; gap: 5px; }
.checkin-reward-identity input[type="text"],
.checkin-reward-kind select,
.checkin-reward-kind input,
.checkin-reward-weight input { height: 34px; padding: 6px 9px; border-radius: 6px; font-size: 12px; }
.checkin-reward-identity input + input { color: var(--text-muted); font-size: 11px; }
.checkin-contact-editor { display: grid; grid-template-columns: 102px minmax(0, 1fr); gap: 6px; }
.checkin-contact-editor select,
.checkin-contact-editor input { min-width: 0; height: 32px; padding: 5px 7px; border-radius: 6px; font-size: 11px; }

.checkin-reward-kind { display: grid; grid-template-columns: minmax(0, 1fr) 86px; gap: 7px; }
.checkin-value-input { position: relative; }
.checkin-value-input input { padding-right: 28px; }
.checkin-value-input span { position: absolute; right: 8px; top: 50%; color: var(--text-muted); font-size: 10px; transform: translateY(-50%); pointer-events: none; }
.checkin-value-input.is-hidden { visibility: hidden; }
.checkin-reward-weight { display: grid; grid-template-columns: minmax(0, 1fr) 58px; align-items: center; gap: 7px; }
.checkin-reward-weight strong { color: #047857; font-size: 12px; text-align: right; }
.checkin-reward-switch { justify-self: center; }
.checkin-add-button { margin-top: 14px; }

@media (max-width: 720px) {
    .checkin-manager-header { align-items: flex-start; flex-direction: column; }
    .checkin-header-actions { width: 100%; }
    .checkin-header-actions .btn { flex: 1; padding-inline: 12px; }
    .checkin-sync-row { align-items: flex-start; flex-direction: column; }
    .checkin-campaign-settings { grid-template-columns: 1fr; }
    .checkin-summary { grid-template-columns: 1fr; }
    .checkin-summary > div + div { border-top: 1px solid var(--border); border-left: 0; }
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    text-align: left;
    padding: 16px;
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

.table td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.badge {
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #dcfce7;
    color: #15803d;
}

.badge-danger {
    background: #fee2e2;
    color: #b91c1c;
}

.badge-warning {
    background: #fef3c7;
    color: #b45309;
}

.badge-info {
    background: #e0f2fe;
    color: #0369a1;
}

.badge-neutral {
    background: #f1f5f9;
    color: #475569;
}

.message-options-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.message-popup-option {
    min-height: 46px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.message-popup-option > div > label {
    margin-bottom: 2px;
}

.message-popup-option p {
    margin: 0;
    color: var(--text-muted);
    font-size: 12px;
}

.form-hint {
    margin: 8px 0 0;
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.55;
}

.message-image-upload input[type="file"] {
    padding: 10px;
    background: var(--bg-body);
}

.message-image-preview {
    max-width: 520px;
    margin-top: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
}

.message-image-preview img {
    display: block;
    width: 100%;
    max-height: 320px;
    object-fit: contain;
    background: #f8fafc;
}

.message-image-preview-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-muted);
    font-size: 12px;
}

.message-image-preview-meta span {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.message-history-thumb {
    width: 52px;
    height: 38px;
    display: block;
    border: 1px solid var(--border);
    border-radius: 6px;
    object-fit: cover;
    background: #f8fafc;
}

.message-feature-badges,
.message-history-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-grid;
    place-items: center;
}

.message-editor {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
}

.message-editor-toolbar {
    min-height: 48px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px;
    padding: 7px 9px;
    border-bottom: 1px solid var(--border);
    background: #f8fafc;
}

.editor-tool,
.editor-color,
.modal-close {
    display: inline-grid;
    place-items: center;
    border: 0;
    cursor: pointer;
}

.editor-tool {
    width: 34px;
    height: 34px;
    border-radius: 6px;
    color: #475569;
    background: transparent;
}

.editor-tool:hover,
.editor-tool:focus-visible {
    color: var(--primary-dark);
    background: var(--primary-light);
    outline: none;
}

.editor-toolbar-divider {
    width: 1px;
    height: 24px;
    margin: 0 3px;
    background: var(--border);
}

.editor-size-control {
    height: 34px;
    display: inline-flex !important;
    align-items: center;
    gap: 5px;
    margin: 0 !important;
    padding: 0 7px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: #475569 !important;
    background: #fff;
}

.editor-size-control select {
    width: 58px;
    padding: 0;
    border: 0;
    border-radius: 0;
    color: inherit;
    background: transparent;
    font-size: 12px;
    box-shadow: none;
}

.editor-action-control select {
    width: 88px;
}

.editor-color-swatches {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 0 3px;
}

.editor-color {
    width: 24px;
    height: 24px;
    border: 2px solid #fff;
    border-radius: 50%;
    background: var(--swatch);
    box-shadow: 0 0 0 1px #cbd5e1;
}

.editor-color:hover,
.editor-color:focus-visible {
    box-shadow: 0 0 0 2px var(--primary);
    outline: none;
}

.message-editor-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.message-editor-pane {
    min-width: 0;
}

.message-editor-pane + .message-editor-pane {
    border-left: 1px solid var(--border);
}

.message-editor-pane-title {
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 7px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
    background: #fff;
    font-size: 12px;
    font-weight: 700;
}

.message-editor-pane-title span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.message-editor textarea {
    min-height: 300px;
    display: block;
    resize: vertical;
    border: 0;
    border-radius: 0;
    background: #fbfdff;
    font-family: Consolas, 'SFMono-Regular', monospace;
    font-size: 13px;
    line-height: 1.6;
    box-shadow: none;
}

.message-content-preview {
    min-height: 300px;
    max-height: 520px;
    overflow: auto;
    padding: 16px;
    color: #334155;
    background: #fff;
    font-size: 14px;
    line-height: 1.7;
    overflow-wrap: anywhere;
}

.message-content-preview > :first-child { margin-top: 0; }
.message-content-preview > :last-child { margin-bottom: 0; }
.message-content-preview p,
.message-content-preview ul,
.message-content-preview ol,
.message-content-preview blockquote,
.message-content-preview pre,
.message-content-preview table { margin: 0 0 12px; }
.message-content-preview h1,
.message-content-preview h2,
.message-content-preview h3,
.message-content-preview h4,
.message-content-preview h5,
.message-content-preview h6 { margin: 16px 0 8px; color: inherit; line-height: 1.35; letter-spacing: 0; }
.message-content-preview h1 { font-size: 22px; }
.message-content-preview h2 { font-size: 19px; }
.message-content-preview h3 { font-size: 17px; }
.message-content-preview ul,
.message-content-preview ol { padding-left: 22px; }
.message-content-preview a { color: #0f766e; font-weight: 650; text-decoration: underline; }
.message-content-preview a[href^="app://"] {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 8px 4px;
    padding: 10px 16px;
    border-radius: 6px;
    color: #fff;
    background-color: #0f766e;
    font-weight: 700;
    text-decoration: none;
}
.message-content-preview blockquote { padding: 10px 14px; border-left: 3px solid #14b8a6; background: #ecfeff; color: #475569; }
.message-content-preview code { padding: 2px 5px; border-radius: 4px; color: #be123c; background: #eef2f7; }
.message-content-preview pre { overflow: auto; padding: 12px; border-radius: 6px; color: #e5e7eb; background: #111827; }
.message-content-preview pre code { padding: 0; color: inherit; background: transparent; }
.message-content-preview img { display: block; max-width: 100%; height: auto; margin: 12px auto; border-radius: 6px; }
.message-content-preview table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; }
.message-content-preview th,
.message-content-preview td { padding: 7px 9px; border: 1px solid #dbe3ec; text-align: left; }
.message-content-preview hr { height: 1px; margin: 16px 0; border: 0; background: #dbe3ec; }

.message-compatibility-status {
    min-height: 22px;
    padding: 2px 7px;
    border-radius: 5px;
    color: #047857;
    background: #d1fae5;
    font-size: 11px;
    white-space: nowrap;
}

.message-compatibility-status.has-warning {
    color: #b45309;
    background: #fef3c7;
}

.message-preview-empty {
    min-height: 250px;
    display: grid;
    place-items: center;
    color: #94a3b8;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgb(15 23 42 / 0.58);
}

.modal-dialog {
    width: min(1120px, 100%);
    max-height: calc(100vh - 40px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow-lg);
}

.modal-header,
.modal-footer {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
}

.modal-header {
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 18px;
    letter-spacing: 0;
}

.modal-header p {
    margin: 2px 0 0;
    color: var(--text-muted);
    font-size: 12px;
}

.modal-close {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    border-radius: 6px;
    color: #64748b;
    background: #f1f5f9;
}

.modal-close:hover { color: #0f172a; background: #e2e8f0; }

.modal-body {
    min-height: 0;
    overflow-y: auto;
    padding: 20px;
}

.modal-footer {
    justify-content: flex-end;
    border-top: 1px solid var(--border);
    background: #f8fafc;
}

.message-edit-fields {
    display: grid;
    grid-template-columns: 1.1fr 1.5fr 0.8fr 0.8fr 0.8fr;
    gap: 12px;
}

.message-edit-flags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #f8fafc;
}

.message-edit-flags label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #334155;
    font-size: 13px;
    font-weight: 650;
    cursor: pointer;
}

.message-edit-flags input {
    width: 16px;
    height: 16px;
}

@media (max-width: 720px) {
    .message-options-grid {
        grid-template-columns: 1fr;
    }

    .message-editor-grid,
    .message-edit-fields {
        grid-template-columns: 1fr;
    }

    .message-editor-pane + .message-editor-pane {
        border-top: 1px solid var(--border);
        border-left: 0;
    }

    .message-editor textarea,
    .message-content-preview {
        min-height: 240px;
    }

    .modal-overlay {
        align-items: flex-end;
        padding: 8px;
    }

    .modal-dialog {
        max-height: calc(100vh - 16px);
    }
}

/* --- Sub Navigation (Force Horizontal) --- */
.sub-nav {
    display: flex !important;
    flex-direction: row !important;
    gap: 8px;
    margin-bottom: 24px;
    background: #fff;
    padding: 6px;
    border-radius: 14px;
    border: 1px solid var(--border);
    width: fit-content;
}

.sub-nav-item {
    padding: 8px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.sub-nav-item:hover {
    color: var(--text-main);
    background: var(--bg-body);
}

.sub-nav-item.active {
    background: var(--primary) !important;
    color: white !important;
}

/* --- Features Grid --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.config-item-row {
    background: #fff;
    padding: 20px;
    border-radius: 16px;
    border: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
}

.config-item-row:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.config-item-info h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-main);
}

.config-item-info p {
    font-size: 12px;
    color: var(--text-muted);
    font-family: monospace;
}

/* --- Toggle Switch (Optimized) --- */
.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e2e8f0;
    transition: .3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

input:checked+.slider:before {
    transform: translateX(22px);
}

input:focus+.slider {
    box-shadow: 0 0 0 4px var(--primary-light);
}

/* --- Info Box --- */
.info-box {
    background: var(--primary-light);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    gap: 12px;
    align-items: center;
    color: var(--primary-dark);
    font-size: 14px;
}

.info-box i {
    font-size: 18px;
}

/* --- Utilities --- */
.hidden {
    display: none !important;
}

/* --- Splash screen manager --- */
.splash-manager-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
}

.splash-manager-header > div {
    min-width: 0;
}

.splash-manager-header > .btn {
    flex: 0 0 auto;
    white-space: nowrap;
}

.splash-manager-header p,
.form-hint {
    margin-top: 4px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 400;
}

.splash-editor-grid {
    display: grid;
    grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
    gap: 28px;
    align-items: start;
}

.splash-fields {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.splash-field-row {
    display: grid;
    grid-template-columns: minmax(160px, 1fr) minmax(150px, 0.7fr);
    gap: 16px;
}

.splash-active-field .switch {
    margin-top: 10px;
}

.splash-image-preview {
    margin-top: 12px;
    border: 1px solid var(--border);
    background: var(--bg-body);
    overflow: hidden;
}

.splash-image-preview img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: 280px;
    object-fit: contain;
}

.splash-image-preview span {
    display: block;
    padding: 8px 10px;
    color: var(--text-muted);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.splash-image-preview.is-error {
    border-color: #ef4444;
}

.splash-source-label {
    display: block;
    margin-top: 18px;
}

.splash-segmented {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px;
    margin-top: 8px;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-body);
}

.splash-source-segmented {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.splash-segmented label {
    min-width: 0;
    cursor: pointer;
}

.splash-segmented input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.splash-segmented span {
    display: flex;
    min-height: 38px;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 8px 6px;
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-align: center;
}

.splash-segmented input:checked + span {
    border-color: var(--primary);
    background: #ffffff;
    color: var(--primary-dark);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.splash-segmented input:focus-visible + span {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.splash-source-panel {
    margin-top: 12px;
}

.splash-file-input {
    display: none;
}

.splash-file-picker {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 12px;
}

.splash-file-button {
    flex: 0 0 auto;
    min-height: 42px;
    white-space: nowrap;
}

#splash-file-name {
    min-width: 0;
    color: var(--text-muted);
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.splash-field-label {
    display: block;
    margin-bottom: 7px;
    color: var(--text-main);
    font-size: 13px;
    font-weight: 600;
}

.splash-url-input-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 40px;
    gap: 8px;
    align-items: center;
}

.splash-url-input-row .btn-icon-sm {
    width: 40px;
    height: 40px;
}

.splash-list {
    display: grid;
    gap: 24px;
}

.splash-platform-group {
    min-width: 0;
}

.splash-platform-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.splash-platform-heading h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    color: var(--text-main);
    font-size: 15px;
}

.splash-platform-heading > span {
    color: var(--text-muted);
    font-size: 12px;
}

.splash-platform-items {
    display: grid;
    gap: 10px;
}

.splash-platform-empty {
    padding: 14px 0;
    color: var(--text-muted);
    font-size: 13px;
}

.splash-list-item {
    display: grid;
    grid-template-columns: 148px minmax(0, 1fr) auto;
    gap: 18px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border);
    background: #fff;
}

.splash-list-thumb {
    width: 148px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: var(--bg-body);
}

.splash-list-thumb-missing {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px dashed #f0a7a7;
    color: var(--danger);
    font-size: 12px;
    font-weight: 700;
    background: #fff7f7;
}

.splash-list-thumb-missing i {
    font-size: 20px;
}

.splash-list-info {
    min-width: 0;
}

.splash-list-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 7px;
}

.splash-list-link {
    display: block;
    max-width: 100%;
    color: var(--primary);
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.splash-list-actions {
    display: flex;
    gap: 8px;
}

@media (max-width: 760px) {
    .splash-editor-grid,
    .splash-field-row {
        grid-template-columns: 1fr;
    }

    .splash-list-item {
        grid-template-columns: 112px minmax(0, 1fr);
    }

    .splash-list-thumb {
        width: 112px;
    }

    .splash-list-actions {
        grid-column: 1 / -1;
        justify-content: flex-end;
    }
}

@media (max-width: 520px) {
    .splash-manager-header {
        gap: 10px;
    }

    .splash-segmented span {
        min-height: 42px;
        flex-direction: column;
        gap: 3px;
        padding: 6px 3px;
    }

    .splash-source-segmented span {
        flex-direction: row;
        gap: 6px;
    }

    .splash-file-picker {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    #splash-file-name {
        width: 100%;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .splash-list-item {
        grid-template-columns: minmax(0, 1fr);
    }

    .splash-list-thumb {
        width: 100%;
    }

    .splash-list-actions {
        grid-column: auto;
    }
}

/* --- Toast --- */
#toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
}

.toast {
    background: white;
    padding: 16px 24px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideIn 0.3s ease forwards;
    border-left: 4px solid var(--primary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* --- Loading --- */
.loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
}

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

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

/* --- API Status Monitoring --- */
.api-status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.api-status-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: all 0.2s;
}

.api-status-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.api-status-item.faulty {
    border-color: var(--danger);
    background: #fff1f2;
}

.api-status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.api-url-info {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.api-url-info i {
    color: var(--primary);
    font-size: 18px;
}

.api-url-text {
    font-weight: 700;
    font-size: 15px;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.api-checks-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.check-box {
    background: var(--bg-body);
    padding: 12px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.check-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.check-result {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
}

.check-result.up {
    color: var(--success);
}

.check-result.down {
    color: var(--danger);
}

.check-result.warning {
    color: var(--warning);
}

.check-result.loading {
    color: var(--text-muted);
}

.latency-text {
    font-size: 12px;
    font-weight: 500;
    opacity: 0.8;
}

.faulty-badge {
    background: var(--danger);
    color: white;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
}

/* --- Windows Installer Management --- */
.installer-layout {
    display: grid;
    grid-template-columns: minmax(520px, 1.25fr) minmax(420px, 1fr);
    gap: 24px;
    align-items: start;
}

.installer-card-header > div > p,
.installer-toggle-row p,
.installer-save-row span {
    margin: 5px 0 0;
    color: var(--text-muted);
    font-size: 13px;
}

.installer-form {
    display: grid;
    gap: 18px;
}

.installer-toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.installer-toggle-row h3 {
    margin: 0;
    font-size: 15px;
}

.installer-fields-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.installer-color-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(90px, 1fr));
    gap: 12px;
}

.installer-color-grid label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
}

.installer-color-grid input[type="color"] {
    width: 100%;
    height: 42px;
    padding: 3px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
}

.installer-save-row {
    display: flex;
    align-items: center;
    gap: 16px;
    border-top: 1px solid var(--border);
}

.installer-preview-card {
    position: sticky;
    top: 94px;
}

.installer-window-preview {
    --installer-preview-bg: #f8fafc;
    --installer-preview-title: #0f172a;
    --installer-preview-text: #475569;
    --installer-preview-accent: #2563eb;
    overflow: hidden;
    border: 1px solid #b9c0ca;
    border-radius: 6px;
    background: var(--installer-preview-bg);
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.14);
}

.installer-preview-titlebar {
    height: 34px;
    padding: 0 11px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    color: #1f2937;
    font-size: 12px;
}

.installer-preview-content {
    display: grid;
    grid-template-columns: 34% 66%;
    min-height: 292px;
    border-top: 4px solid var(--installer-preview-accent);
}

.installer-preview-media {
    min-width: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    background: color-mix(in srgb, var(--installer-preview-accent) 16%, #ffffff);
    color: var(--installer-preview-accent);
}

.installer-preview-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.installer-preview-media > i {
    font-size: 48px;
}

.installer-preview-copy {
    min-width: 0;
    padding: 38px 30px 28px;
    color: var(--installer-preview-text);
}

.installer-preview-kicker {
    color: var(--installer-preview-accent);
    font-size: 10px;
    font-weight: 800;
}

.installer-preview-copy h3 {
    margin: 7px 0 12px;
    color: var(--installer-preview-title);
    font-size: 24px;
    line-height: 1.2;
    overflow-wrap: anywhere;
}

.installer-preview-copy strong {
    display: block;
    color: var(--installer-preview-title);
    font-size: 13px;
    line-height: 1.5;
}

.installer-preview-copy p {
    min-height: 64px;
    margin: 12px 0 20px;
    font-size: 12px;
    line-height: 1.65;
    overflow-wrap: anywhere;
}

.installer-preview-copy button {
    min-width: 100px;
    height: 32px;
    padding: 0 14px;
    border: 0;
    border-radius: 4px;
    background: var(--installer-preview-accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
}

.installer-preview-footer {
    height: 48px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    border-top: 1px solid #d9dde3;
    background: #f3f4f6;
}

.installer-preview-footer button {
    min-width: 68px;
    height: 27px;
    border: 1px solid #aeb4bd;
    border-radius: 3px;
    background: #fff;
    color: #20242a;
    font-size: 11px;
}

.installer-preview-note {
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 13px;
}

@media (max-width: 1280px) {
    .installer-layout {
        grid-template-columns: 1fr;
    }

    .installer-preview-card {
        position: static;
    }
}

@media (max-width: 720px) {
    .installer-fields-grid,
    .installer-color-grid {
        grid-template-columns: 1fr;
    }

    .installer-save-row {
        align-items: flex-start;
        flex-direction: column;
    }
}