/**
 * PRISM Editor Styles
 * All classes use pe- prefix for namespacing
 */

/* ===== Layout ===== */
.pe-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: #1f2937;
    background: #f3f4f6;
}

/* ===== Toolbar ===== */
.pe-toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    flex-shrink: 0;
    z-index: 20;
}
.pe-toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.pe-toolbar-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}
.pe-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.pe-toolbar-brand {
    font-weight: 700;
    font-size: 0.95rem;
    color: #000f6a;
    text-decoration: none;
    margin-right: 0.75rem;
}
.pe-toolbar-sep {
    width: 1px;
    height: 1.5rem;
    background: #d1d5db;
    margin: 0 0.25rem;
}
.pe-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    background: #fff;
    color: #374151;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.pe-btn:hover {
    background: #f3f4f6;
    border-color: #9ca3af;
}
.pe-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}
.pe-btn-primary {
    background: #000f6a;
    color: #fff;
    border-color: #000f6a;
}
.pe-btn-primary:hover {
    background: #000d5a;
}
.pe-btn-active {
    background: #dbeafe;
    border-color: #3b82f6;
    color: #1d4ed8;
}

/* ===== Tab Bar ===== */
.pe-tabs {
    display: flex;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 0 1rem;
    flex-shrink: 0;
    overflow-x: auto;
}
.pe-tab {
    padding: 0.6rem 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: #6b7280;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    white-space: nowrap;
}
.pe-tab:hover { color: #1f2937; }
.pe-tab-active {
    color: #000f6a;
    border-bottom-color: #000f6a;
}

/* ===== Split Panels ===== */
.pe-panels {
    display: flex;
    flex: 1;
    overflow: hidden;
}
#pe-editor-panel {
    width: 50%;
    overflow-y: auto;
    background: #fff;
    border-right: 1px solid #e5e7eb;
}
.pe-resizer {
    width: 6px;
    cursor: col-resize;
    background: #e5e7eb;
    flex-shrink: 0;
    transition: background 0.15s;
}
.pe-resizer:hover { background: #3b82f6; }
#pe-preview-panel {
    width: 50%;
    overflow: hidden;
    background: #f9fafb;
}
#pe-preview-frame {
    width: 100%;
    height: 100%;
    border: none;
}

/* ===== Tab Panel Content ===== */
.pe-tab-content {
    padding: 1.25rem;
}
.pe-hidden { display: none !important; }

/* ===== Form Fields ===== */
.pe-field {
    margin-bottom: 1rem;
}
.pe-field label,
.pe-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.3rem;
}
.pe-input,
.pe-select,
.pe-textarea {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    background: #fff;
    color: #1f2937;
    transition: border-color 0.15s;
    box-sizing: border-box;
}
.pe-input:focus,
.pe-select:focus,
.pe-textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}
.pe-textarea {
    resize: vertical;
    min-height: 4rem;
    font-family: inherit;
}
.pe-hint {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-top: 0.2rem;
}
.pe-row {
    display: flex;
    gap: 0.75rem;
}
.pe-row > * { flex: 1; }

/* ===== Cards (blocks, questions) ===== */
.pe-card {
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    background: #fff;
    overflow: hidden;
    transition: box-shadow 0.15s;
}
.pe-card:hover { box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.pe-card.pe-dragging { opacity: 0.5; }
.pe-card.pe-drag-over { border-color: #3b82f6; box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2); }

.pe-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: #f9fafb;
    border-bottom: 1px solid #e5e7eb;
    cursor: default;
}
.pe-card.pe-collapsed .pe-card-body { display: none; }
.pe-card.pe-collapsed .pe-card-header { border-bottom: none; }

.pe-drag-handle {
    cursor: grab;
    color: #9ca3af;
    font-size: 1rem;
    user-select: none;
}
.pe-type-badge {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    background: #e5e7eb;
    color: #4b5563;
    white-space: nowrap;
}
.pe-type-text { background: #dbeafe; color: #1d4ed8; }
.pe-type-callout { background: #fef3c7; color: #92400e; }
.pe-type-diagram { background: #d1fae5; color: #065f46; }
.pe-type-media { background: #fce7f3; color: #9d174d; }
.pe-type-formula { background: #ede9fe; color: #5b21b6; }
.pe-type-list { background: #e0e7ff; color: #3730a3; }
.pe-type-heading { background: #f3f4f6; color: #1f2937; }
.pe-type-table { background: #ccfbf1; color: #134e4a; }
.pe-type-code { background: #1f2937; color: #e5e7eb; }
.pe-type-assessment { background: #fee2e2; color: #991b1b; }

.pe-card-title {
    flex: 1;
    font-size: 0.8rem;
    color: #6b7280;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pe-card-actions {
    display: flex;
    gap: 0.25rem;
}
.pe-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border: none;
    background: none;
    color: #9ca3af;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all 0.15s;
    padding: 0;
}
.pe-btn-icon:hover { background: #e5e7eb; color: #374151; }
.pe-btn-remove:hover { background: #fee2e2; color: #dc2626; }

.pe-card-body {
    padding: 0.75rem;
}

/* ===== Dropdown Menu ===== */
.pe-dropdown {
    position: relative;
    display: inline-block;
}
.pe-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 30;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 0.25rem 0;
    min-width: 180px;
}
.pe-dropdown-item {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    text-align: left;
    border: none;
    background: none;
    color: #374151;
    cursor: pointer;
    transition: background 0.1s;
}
.pe-dropdown-item:hover { background: #f3f4f6; }

/* ===== Raw JSON Editor ===== */
#pe-raw-editor {
    position: absolute;
    inset: 0;
    z-index: 5;
    background: #fff;
}
#pe-raw-editor .CodeMirror {
    height: 100%;
    font-size: 13px;
}
#pe-raw-editor.pe-json-error {
    border: 2px solid #ef4444;
}
#pe-raw-textarea {
    width: 100%;
    height: 100%;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 13px;
    border: none;
    padding: 1rem;
    resize: none;
    outline: none;
    box-sizing: border-box;
}

/* ===== Section Headers ===== */
.pe-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e5e7eb;
}
.pe-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #1f2937;
}
.pe-empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: #9ca3af;
    font-size: 0.85rem;
}

/* ===== File input ===== */
#pe-file-input { display: none; }