/* ===== RDAKTOR UI-KIT ===== */
:root {
  /* Brand */
  --rdk-primary: #6366f1;
  --rdk-primary-hover: #4f46e5;
  --rdk-primary-light: #e0e7ff;
  --rdk-accent: #f59e0b;
  --rdk-accent-hover: #d97706;
  
  /* Status */
  --rdk-success: #10b981;
  --rdk-success-light: #d1fae5;
  --rdk-danger: #ef4444;
  --rdk-danger-light: #fee2e2;
  --rdk-warning: #f59e0b;
  --rdk-warning-light: #fef3c7;
  --rdk-info: #3b82f6;
  --rdk-info-light: #dbeafe;
  
  /* Backgrounds */
  --rdk-bg: #f8fafc;
  --rdk-bg-secondary: #f1f5f9;
  --rdk-bg-card: #ffffff;
  --rdk-bg-sidebar: #1e293b;
  --rdk-bg-sidebar-hover: #334155;
  
  /* Text */
  --rdk-text: #0f172a;
  --rdk-text-secondary: #475569;
  --rdk-text-muted: #94a3b8;
  --rdk-text-inverse: #ffffff;
  
  /* Borders */
  --rdk-border: #e2e8f0;
  --rdk-border-focus: #6366f1;
  
  /* Layout */
  --rdk-radius-sm: 6px;
  --rdk-radius: 10px;
  --rdk-radius-lg: 14px;
  --rdk-radius-xl: 20px;
  --rdk-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --rdk-shadow: 0 4px 12px rgba(0,0,0,0.08);
  --rdk-shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --rdk-shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  
  /* Spacing */
  --rdk-space-xs: 4px;
  --rdk-space-sm: 8px;
  --rdk-space-md: 16px;
  --rdk-space-lg: 24px;
  --rdk-space-xl: 32px;
  --rdk-space-2xl: 48px;
  
  /* Transitions */
  --rdk-transition: 200ms ease;
  --rdk-transition-slow: 350ms ease;
}

/* ===== BUTTONS ===== */
.rdk-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border-radius: var(--rdk-radius); font-size: 14px; font-weight: 600; border: none; cursor: pointer; transition: all var(--rdk-transition); font-family: inherit; line-height: 1.4; }
.rdk-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.rdk-btn-primary { background: var(--rdk-primary); color: var(--rdk-text-inverse); }
.rdk-btn-primary:hover:not(:disabled) { background: var(--rdk-primary-hover); transform: translateY(-1px); box-shadow: var(--rdk-shadow); }
.rdk-btn-secondary { background: var(--rdk-bg-secondary); color: var(--rdk-text); border: 1px solid var(--rdk-border); }
.rdk-btn-secondary:hover:not(:disabled) { background: var(--rdk-border); }
.rdk-btn-danger { background: var(--rdk-danger); color: var(--rdk-text-inverse); }
.rdk-btn-danger:hover:not(:disabled) { background: #dc2626; }
.rdk-btn-ghost { background: transparent; color: var(--rdk-text-secondary); }
.rdk-btn-ghost:hover:not(:disabled) { background: var(--rdk-bg-secondary); color: var(--rdk-text); }
.rdk-btn-sm { padding: 6px 12px; font-size: 13px; }
.rdk-btn-lg { padding: 14px 28px; font-size: 16px; }
.rdk-btn-icon { width: 36px; height: 36px; padding: 0; border-radius: var(--rdk-radius-sm); }

/* ===== CARDS ===== */
.rdk-card { background: var(--rdk-bg-card); border: 1px solid var(--rdk-border); border-radius: var(--rdk-radius-lg); padding: var(--rdk-space-lg); box-shadow: var(--rdk-shadow-sm); transition: all var(--rdk-transition); }
.rdk-card:hover { box-shadow: var(--rdk-shadow); }
.rdk-card-interactive:hover { transform: translateY(-2px); box-shadow: var(--rdk-shadow-lg); border-color: var(--rdk-primary); }

/* ===== INPUTS ===== */
.rdk-input, .rdk-select, .rdk-textarea { width: 100%; padding: 10px 14px; border: 1.5px solid var(--rdk-border); border-radius: var(--rdk-radius); font-size: 14px; font-family: inherit; background: var(--rdk-bg-card); color: var(--rdk-text); outline: none; transition: border-color var(--rdk-transition), box-shadow var(--rdk-transition); }
.rdk-input:focus, .rdk-select:focus, .rdk-textarea:focus { border-color: var(--rdk-border-focus); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.rdk-input::placeholder { color: var(--rdk-text-muted); }
.rdk-label { display: block; font-size: 13px; font-weight: 600; color: var(--rdk-text-secondary); margin-bottom: 6px; }

/* ===== MODALS ===== */
.rdk-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 9999; opacity: 0; visibility: hidden; transition: all var(--rdk-transition); backdrop-filter: blur(4px); }
.rdk-modal-overlay.active { opacity: 1; visibility: visible; }
.rdk-modal { background: var(--rdk-bg-card); border-radius: var(--rdk-radius-xl); padding: var(--rdk-space-xl); max-width: 560px; width: 90%; max-height: 85vh; overflow-y: auto; box-shadow: var(--rdk-shadow-xl); transform: scale(0.95) translateY(10px); transition: transform var(--rdk-transition-slow); }
.rdk-modal-overlay.active .rdk-modal { transform: scale(1) translateY(0); }
.rdk-modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--rdk-space-lg); }
.rdk-modal-title { font-size: 20px; font-weight: 700; color: var(--rdk-text); }
.rdk-modal-close { width: 32px; height: 32px; border-radius: 50%; border: none; background: var(--rdk-bg-secondary); color: var(--rdk-text-muted); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 18px; transition: all var(--rdk-transition); }
.rdk-modal-close:hover { background: var(--rdk-danger-light); color: var(--rdk-danger); }

/* ===== TOAST NOTIFICATIONS ===== */
.rdk-toast-container { position: fixed; top: 20px; right: 20px; z-index: 10000; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.rdk-toast { pointer-events: auto; display: flex; align-items: center; gap: 10px; padding: 14px 20px; border-radius: var(--rdk-radius); background: var(--rdk-bg-card); border: 1px solid var(--rdk-border); box-shadow: var(--rdk-shadow-lg); font-size: 14px; color: var(--rdk-text); min-width: 300px; max-width: 420px; transform: translateX(120%); transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); }
.rdk-toast.show { transform: translateX(0); }
.rdk-toast-success { border-left: 4px solid var(--rdk-success); }
.rdk-toast-error { border-left: 4px solid var(--rdk-danger); }
.rdk-toast-warning { border-left: 4px solid var(--rdk-warning); }
.rdk-toast-info { border-left: 4px solid var(--rdk-info); }
.rdk-toast-icon { font-size: 18px; flex-shrink: 0; }
.rdk-toast-message { flex: 1; }
.rdk-toast-close { background: none; border: none; color: var(--rdk-text-muted); cursor: pointer; padding: 2px; font-size: 16px; }

/* ===== BADGES ===== */
.rdk-badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 50px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.rdk-badge-free { background: var(--rdk-success-light); color: #059669; }
.rdk-badge-premium { background: var(--rdk-warning-light); color: #b45309; }
.rdk-badge-status { background: var(--rdk-info-light); color: #2563eb; }

/* ===== EMPTY STATES ===== */
.rdk-empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--rdk-space-2xl); text-align: center; }
.rdk-empty-state-icon { font-size: 48px; margin-bottom: var(--rdk-space-md); opacity: 0.6; }
.rdk-empty-state-title { font-size: 18px; font-weight: 700; color: var(--rdk-text); margin-bottom: var(--rdk-space-sm); }
.rdk-empty-state-text { font-size: 14px; color: var(--rdk-text-muted); max-width: 320px; margin-bottom: var(--rdk-space-lg); }

/* ===== TABLES ===== */
.rdk-table-wrap { overflow-x: auto; border: 1px solid var(--rdk-border); border-radius: var(--rdk-radius-lg); }
.rdk-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.rdk-table th { text-align: left; padding: 12px 16px; font-weight: 600; color: var(--rdk-text-secondary); background: var(--rdk-bg-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.rdk-table td { padding: 12px 16px; border-top: 1px solid var(--rdk-border); color: var(--rdk-text); }
.rdk-table tr:hover td { background: var(--rdk-bg); }

/* ===== TOOLBAR ===== */
.rdk-toolbar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--rdk-bg-card); border-bottom: 1px solid var(--rdk-border); }
.rdk-toolbar-separator { width: 1px; height: 24px; background: var(--rdk-border); margin: 0 4px; }
.rdk-toolbar-group { display: flex; align-items: center; gap: 4px; }

/* ===== TABS ===== */
.rdk-tabs { display: flex; gap: 2px; background: var(--rdk-bg-secondary); padding: 3px; border-radius: var(--rdk-radius); }
.rdk-tab { padding: 8px 16px; border-radius: var(--rdk-radius-sm); font-size: 13px; font-weight: 600; color: var(--rdk-text-secondary); background: transparent; border: none; cursor: pointer; transition: all var(--rdk-transition); }
.rdk-tab:hover { color: var(--rdk-text); }
.rdk-tab.active { background: var(--rdk-bg-card); color: var(--rdk-primary); box-shadow: var(--rdk-shadow-sm); }

/* ===== BREADCRUMB ===== */
.rdk-breadcrumb { padding: 8px 12px; font-size: 12px; color: var(--rdk-text-muted); border-bottom: 1px solid var(--rdk-border); display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.rdk-breadcrumb-item { color: var(--rdk-text-secondary); cursor: pointer; }
.rdk-breadcrumb-item:hover { color: var(--rdk-primary); }
.rdk-breadcrumb-sep { color: var(--rdk-text-muted); }
.rdk-breadcrumb-current { color: var(--rdk-primary); font-weight: 600; }

/* ===== BLOCK ACTIONS (floating in iframe) ===== */
.rdk-block-actions { position: absolute; top: -40px; left: 50%; transform: translateX(-50%); display: flex; gap: 4px; background: var(--rdk-bg-card); border: 1px solid var(--rdk-border); border-radius: var(--rdk-radius); padding: 4px; box-shadow: var(--rdk-shadow-lg); z-index: 99998; }
.rdk-block-actions .rdk-btn-icon { width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; border: none; background: transparent; cursor: pointer; border-radius: var(--rdk-radius-sm); color: var(--rdk-text); transition: all var(--rdk-transition); }
.rdk-block-actions .rdk-btn-icon:hover { background: var(--rdk-bg-secondary); }
.rdk-block-actions .rdk-btn-icon.danger:hover { background: var(--rdk-danger-light); color: var(--rdk-danger); }

/* ===== BLOCK GRID (insert block modal) ===== */
.rdk-block-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; max-height: 50vh; overflow-y: auto; padding-right: 4px; }
.rdk-block-item { background: var(--rdk-bg-card); border: 1px solid var(--rdk-border); border-radius: var(--rdk-radius); padding: 12px; cursor: pointer; transition: all var(--rdk-transition); text-align: center; }
.rdk-block-item:hover { border-color: var(--rdk-primary); box-shadow: var(--rdk-shadow); transform: translateY(-2px); }
.rdk-block-item.selected { border-color: var(--rdk-primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.2); background: var(--rdk-primary-light); }
.rdk-block-item-icon { font-size: 32px; margin-bottom: 8px; }
.rdk-block-item-name { font-size: 13px; font-weight: 600; color: var(--rdk-text); }
.rdk-block-item-desc { font-size: 11px; color: var(--rdk-text-muted); margin-top: 4px; }

/* ===== UNSAVED CHANGES INDICATOR ===== */
.has-changes { position: relative; }
.has-changes::after { content: ''; position: absolute; top: 2px; right: 2px; width: 8px; height: 8px; background: var(--rdk-warning); border-radius: 50%; border: 2px solid var(--rdk-bg-card); }

/* ===== ADMIN PANEL ===== */
.admin-nav-btn { justify-content: flex-start; width: 100%; text-align: left; padding: 10px 16px; border-radius: var(--rdk-radius); font-size: 14px; }
.admin-nav-btn.active { background: var(--rdk-primary-light); color: var(--rdk-primary); font-weight: 600; }
.admin-content { display: none; }
.admin-content.active { display: block; }
.admin-stat-card { background: var(--rdk-bg-card); border: 1px solid var(--rdk-border); border-radius: var(--rdk-radius-lg); padding: 20px; }
.admin-stat-card .stat-value { font-size: 32px; font-weight: 800; color: var(--rdk-text); }
.admin-stat-card .stat-label { font-size: 13px; color: var(--rdk-text-muted); margin-top: 4px; }
.rdk-badge-danger { background: var(--rdk-danger-light); color: #dc2626; }
.rdk-badge-info { background: var(--rdk-info-light); color: #2563eb; }

/* Analytics chart */
.analytics-bar { background: var(--rdk-primary); border-radius: 4px 4px 0 0; min-width: 20px; flex: 1; transition: height 0.3s ease; position: relative; cursor: pointer; }
.analytics-bar:hover { background: var(--rdk-primary-hover); }
.analytics-bar-label { position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); font-size: 10px; color: var(--rdk-text-muted); white-space: nowrap; }
.analytics-bar-value { position: absolute; top: -20px; left: 50%; transform: translateX(-50%); font-size: 11px; font-weight: 700; color: var(--rdk-text); }
.analytics-metric-card { background: var(--rdk-bg-card); border: 1px solid var(--rdk-border); border-radius: var(--rdk-radius-lg); padding: 20px; text-align: center; }
.analytics-metric-value { font-size: 36px; font-weight: 800; color: var(--rdk-primary); }
.analytics-metric-label { font-size: 13px; color: var(--rdk-text-muted); margin-top: 4px; }

/* ===== END RDAKTOR UI-KIT ===== */

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

:root {
    --primary-color: #4a90e2;
    --secondary-color: #7b68ee;
    --success-color: #2ecc71;
    --info-color: #3498db;
    --danger-color: #e74c3c;
    --dark-bg: #2c3e50;
    --light-bg: #ecf0f1;
    --border-color: #bdc3c7;
    --text-color: #2c3e50;
    --shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.18);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-color);
}

.container {
    max-width: 1600px;
    margin: 0 auto;
}

header {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 2.5em;
}

header p {
    color: #7f8c8d;
    font-size: 1.1em;
}

.section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.hidden {
    display: none !important;
}

/* Upload Section */
.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 10px;
    padding: 60px 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color);
    background: #f8f9fa;
    transform: scale(1.02);
}

.upload-area svg {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.upload-area h3 {
    color: var(--text-color);
    margin-bottom: 10px;
}

.upload-area p {
    color: #95a5a6;
    margin: 10px 0;
}

.file-info {
    font-size: 0.9em;
    color: #7f8c8d;
    margin-top: 20px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.btn-primary:hover {
    background: #357abd;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

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

.btn-success:hover {
    background: #27ae60;
}

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

.btn-danger:hover {
    background: #c0392b;
}

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

.btn-info:hover {
    background: #2980b9;
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.3s ease;
}

.btn-icon:hover {
    background: var(--light-bg);
}

.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

/* Toolbar */
.toolbar {
    background: linear-gradient(180deg, #2f3e52 0%, #253649 100%);
    padding: 15px 20px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.toolbar-right {
    display: flex;
    gap: 10px;
}

/* Editor Layout */
.editor-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 20px;
    min-height: 600px;
}

/* Control Panel */
.control-panel {
    background: #f8f9fb;
    border-radius: 16px;
    position: sticky;
    top: 10px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    box-shadow: var(--shadow-md);
    padding: 20px;
}

/* Fullscreen editor overrides */
#editorSection .control-panel {
    position: relative;
    top: auto;
    max-height: none;
    height: 100vh;
    padding: 16px;
}

.panel-header {
    background: var(--dark-bg);
    color: white;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 12px;
}

.panel-header h3 {
    margin: 0;
    font-size: 1.2em;
}

.tool-section {
    padding: 20px;
    background: white;
    border-radius: 14px;
    box-shadow: var(--shadow);
    margin-top: 18px;
}

.tool-section h4 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.hint {
    font-size: 0.9em;
    color: #7f8c8d;
    font-style: italic;
    margin-bottom: 10px;
}

.tool-list {
    list-style: none;
    padding-left: 0;
    margin-top: 10px;
}

.tool-list li {
    padding: 6px 0;
    color: var(--text-color);
    border-bottom: 1px solid rgba(189, 195, 199, 0.3);
}

.tool-list li:last-child {
    border-bottom: none;
}

.tool-panel {
    background: #f4f6fb;
    border-radius: 10px;
    padding: 16px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.panel-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.panel-actions .btn {
    flex-shrink: 0;
}

.file-hint {
    font-size: 0.9em;
    color: #52606d;
    display: block;
    margin-top: 8px;
}

.insert-hint {
    color: #e74c3c;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 12px 0;
}

.file-list {
    background: #f4f6fb;
    border-radius: 10px;
    padding: 12px;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid rgba(189, 195, 199, 0.4);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

#textEditArea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1em;
    margin-top: 10px;
    resize: vertical;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--text-color);
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    margin-top: 5px;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1em;
    margin-top: 5px;
}

/* Video Options */
.video-options {
    margin: 15px 0;
    padding: 15px;
    background: white;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.video-options label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-weight: normal;
}

.video-options input[type="radio"] {
    width: auto;
    margin: 0;
}

.video-options input[type="text"] {
    margin-top: 10px;
}

/* Preview Panel */
.preview-panel {
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
}

.preview-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.page-select {
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1em;
    cursor: pointer;
}

.preview-container {
    flex: 1;
    background: #eef2f7;
    border: 2px solid var(--border-color);
    margin: 10px;
    border-radius: 8px;
    overflow: auto;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

#previewFrame {
    width: 100%;
    height: 100%;
    border: none;
    min-height: 600px;
}

.preview-viewport {
    width: 1200px;
    /* default desktop */
    margin: 0 auto;
    background: white;
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    border: 1px solid #dde3ea;
}

/* Segmented device controls */
.segmented {
    display: inline-flex;
    background: #e5e7eb;
    border-radius: 8px;
    padding: 2px;
}

.segmented .seg-btn {
    border: none;
    background: transparent;
    padding: 5px 11px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    color: #64748b;
    transition: color 0.15s;
    white-space: nowrap;
}

.segmented .seg-btn:hover {
    color: #1e293b;
}

.segmented .seg-btn.active {
    background: white;
    color: #1e293b;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .10);
    font-weight: 600;
}

/* Smooth custom scrollbars */
*::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

*::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 8px;
}

*::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

*::-webkit-scrollbar-track {
    background: #f1f5f9;
}

/* File List */
#fileList {
    background: white;
    border-radius: 6px;
    padding: 10px;
    max-height: 200px;
    overflow-y: auto;
}

.file-item {
    padding: 8px 12px;
    margin-bottom: 5px;
    background: var(--light-bg);
    border-radius: 4px;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.file-item::before {
    content: "📄";
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
    background: var(--dark-bg);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
}

.btn-close {
    background: transparent;
    border: none;
    color: white;
    font-size: 2em;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.btn-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    background: var(--light-bg);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

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

.field-list {
    background: var(--light-bg);
    border-radius: 6px;
    padding: 15px;
    margin-top: 10px;
}

.field-item {
    padding: 10px;
    background: white;
    border-radius: 4px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

/* Preview editing highlights */
.editing-highlight {
    outline: 2px dashed var(--primary-color) !important;
    cursor: pointer !important;
}

.editing-highlight:hover {
    outline-color: var(--secondary-color) !important;
    background: rgba(74, 144, 226, 0.1) !important;
}

/* Insert mode highlights */
.insert-mode-active {
    cursor: crosshair !important;
}

.insert-mode-active * {
    cursor: crosshair !important;
}

.insert-hover {
    outline: 3px dashed var(--success-color) !important;
    outline-offset: 3px;
    background: rgba(46, 204, 113, 0.15) !important;
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2),
        0 0 20px rgba(46, 204, 113, 0.3) !important;
    animation: insertPulse 2s infinite;
}

@keyframes insertPulse {

    0%,
    100% {
        box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2),
            0 0 20px rgba(46, 204, 113, 0.3);
    }

    50% {
        box-shadow: 0 0 0 5px rgba(46, 204, 113, 0.3),
            0 0 30px rgba(46, 204, 113, 0.5);
    }
}

/* Responsive */
@media (max-width: 1200px) {
    .editor-layout {
        grid-template-columns: 1fr;
    }

    .control-panel {
        order: 2;
    }

    .preview-panel {
        order: 1;
        min-height: 500px;
    }
}

@media (max-width: 640px) {
    #insertBlockLeftPanel {
        width: 100% !important;
        min-width: 0 !important;
    }
    #insertBlockModal [style*="flex:1"] {
        display: none !important;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8em;
    }

    .toolbar {
        flex-direction: column;
        gap: 10px;
    }

    .toolbar-right {
        width: 100%;
    }

    .btn {
        width: 100%;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Success message */
.success-message {
    background: var(--success-color);
    color: white;
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }

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

/* Pulse animation for insertion marker */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.7);
    }

    50% {
        opacity: 0.8;
        box-shadow: 0 0 15px 5px rgba(46, 204, 113, 0.3);
    }
}

/* Floating style popup for text editing */
.style-popup {
    position: absolute;
    z-index: 2000;
    width: 360px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    padding: 12px 12px 16px;
}

.style-popup.hidden {
    display: none !important;
}

.style-popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.style-popup-header .btn-icon {
    border: none;
    font-size: 16px;
}

.style-popup-body label {
    margin: 6px 0 2px;
}

.style-popup-body select,
.style-popup-body input[type="number"],
.style-popup-body input[type="color"] {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #fff;
}

.style-popup-body textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #fff;
    resize: vertical;
}

.style-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
    margin-top: 8px;
}}

/* Text block format buttons (B / I / U) */
.fmt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    border: 1px solid #e2e8f0;
    background: #fff;
    color: #374151;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    user-select: none;
    line-height: 1;
}
.fmt-btn:hover {
    background: #f1f5f9;
}
.fmt-btn[data-active="true"] {
    background: #6366f1;
    color: #fff;
    border-color: #6366f1;
}