/* editor.css - Styling for the IELTS Reading Content Editor Studio */

:root {
    --primary: #1976d2;
    --primary-hover: #1565c0;
    --success: #2e7d32;
    --success-hover: #1b5e20;
    --danger: #d32f2f;
    --danger-hover: #b71c1c;
    --warning: #ed6c02;
    --bg-main: #f4f6f9;
    --bg-card: #ffffff;
    --border: #d0d7de;
    --text-main: #1f2328;
    --text-muted: #656d76;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ================= Top App Bar ================= */
.app-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-shrink: 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1;
}

.app-logo {
    font-size: 16px;
    font-weight: 700;
    color: #1a237e;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.mode-switch-group {
    display: inline-flex;
    background: #f1f3f5;
    padding: 3px;
    border-radius: 8px;
    border: 1px solid var(--border);
    gap: 2px;
}

.mode-btn {
    border: none;
    background: transparent;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.15s ease-in-out;
}

.mode-btn:hover {
    color: var(--text-main);
}

.mode-btn.active {
    background: #ffffff;
    color: var(--primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.app-logo span {
    background: #e8eaf6;
    color: #283593;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    letter-spacing: 0.5px;
}

.test-title-input {
    flex: 1;
    max-width: 460px;
    font-size: 14px;
    font-weight: 600;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.2s;
}

.test-title-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.15);
}

.filename-badge {
    font-family: var(--font-mono);
    font-size: 12px;
    background: #f1f3f5;
    color: #495057;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid #dee2e6;
    white-space: nowrap;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease-in-out;
}

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

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

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

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

.btn-outline {
    background: white;
    border-color: var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: #f6f8fa;
    border-color: #bcc3ce;
}

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

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

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}

/* Status Bar */
.status-bar {
    background: #fafbfc;
    border-bottom: 1px solid var(--border);
    padding: 6px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.q-counter-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 11px;
}

.q-counter-badge.complete {
    background: #e6f4ea;
    color: #137333;
}

.q-counter-badge.incomplete {
    background: #fef7e0;
    color: #b06000;
}

/* ================= App Workspace (Split View) ================= */
.workspace-container {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.editor-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #ffffff;
    border-right: 1px solid var(--border);
    min-width: 400px;
}

.preview-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #f8f9fa;
    min-width: 400px;
}

.pane-resizer {
    width: 6px;
    background: #e9ecef;
    cursor: col-resize;
    transition: background 0.15s;
    user-select: none;
}

.pane-resizer:hover, .pane-resizer.active {
    background: var(--primary);
}

/* ================= Editor Tabs & Content ================= */
.editor-tabs {
    display: flex;
    background: #f6f8fa;
    border-bottom: 1px solid var(--border);
    padding: 0 16px;
    gap: 4px;
    flex-shrink: 0;
}

.tab-btn {
    padding: 10px 16px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: white;
}

.editor-scroll-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.passage-editor-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Form Controls */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 12px;
    font-weight: 600;
    color: #495057;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 8px 12px;
    font-size: 13px;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #ffffff;
    outline: none;
    transition: border-color 0.15s;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.12);
}

.form-textarea {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.5;
    resize: vertical;
}

/* Toolbar above passage text */
.text-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #f6f8fa;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    font-size: 12px;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-btn {
    background: white;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.toolbar-btn:hover {
    background: #f1f3f5;
    border-color: #adb5bd;
}

.textarea-with-toolbar {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

/* ================= Question Group Cards ================= */
.q-groups-container {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.section-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 8px;
}

.section-title {
    font-size: 15px;
    font-weight: 700;
    color: #212529;
}

.card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    overflow: hidden;
    transition: border-color 0.2s;
}

.card-header {
    background: #f8f9fa;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-title-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.card-type-badge {
    background: #e3f2fd;
    color: #1565c0;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}

.card-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-body {
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Question Items / Rows */
.q-item-row {
    background: #fafbfc;
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.q-badge {
    background: #1976d2;
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
}

.radio-group-inline {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    font-weight: 600;
}

.radio-group-inline label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

/* Table columns manager */
.cols-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Reference Box Panel (Matching Items / Researchers) */
.reference-box-panel {
    background: #f8fafc;
    border: 1px solid #d0d7de;
    border-radius: 8px;
    padding: 12px 14px;
    margin-bottom: 14px;
}

.ref-item-row {
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ref-item-row:hover {
    border-color: #0969da !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.ref-letter-input {
    background: #f0f6fc;
    color: #0969da;
    border: 1px solid #c8d9ea;
}

/* ================= Preview Frame ================= */
.preview-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.preview-iframe {
    flex: 1;
    width: 100%;
    height: 100%;
    border: none;
    background: #ffffff;
}

/* ================= Modal ================= */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.modal-card {
    background: white;
    border-radius: 8px;
    width: 480px;
    max-width: 90vw;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    animation: fadeIn 0.15s ease-out;
}

.modal-card-header {
    padding: 14px 18px;
    background: #f8f9fa;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-card-header h3 {
    font-size: 15px;
    font-weight: 700;
}

.modal-card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.modal-card-footer {
    padding: 12px 18px;
    background: #f8f9fa;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 10000;
}

.toast {
    background: #24292f;
    color: white;
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 13px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideUp 0.2s ease-out;
}

.toast.success {
    background: #1b5e20;
}

.toast.error {
    background: #b71c1c;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.97); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ================= Rich WYSIWYG Editor ================= */
.rich-editor-wrapper {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #ffffff;
    overflow: hidden;
}

.rich-editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background: #f8f9fa;
    border-bottom: 1px solid var(--border);
}

.rich-toolbar-group {
    display: flex;
    align-items: center;
    gap: 2px;
    border-right: 1px solid #dee2e6;
    padding-right: 6px;
    margin-right: 4px;
}

.rich-btn {
    background: white;
    border: 1px solid #ced4da;
    border-radius: 4px;
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    color: #495057;
    transition: all 0.12s ease;
}

.rich-btn:hover {
    background: #e9ecef;
    border-color: #adb5bd;
    color: #212529;
}

.rich-btn.active {
    background: #e3f2fd;
    border-color: var(--primary);
    color: var(--primary);
}

.rich-btn-wide {
    width: auto;
    padding: 0 8px;
    gap: 4px;
    font-size: 12px;
}

.rich-visual-area {
    min-height: 240px;
    max-height: 520px;
    overflow-y: auto;
    padding: 14px 16px;
    font-family: inherit;
    font-size: 15px;
    line-height: 1.6;
    color: #24292f;
    outline: none;
}

.rich-visual-area p {
    margin-bottom: 12px;
}

.rich-visual-area ul, .rich-visual-area ol {
    margin-left: 24px;
    margin-bottom: 12px;
}

.rich-visual-area .para-label {
    display: inline-block;
    font-weight: bold;
    color: #1976d2;
    background: #e3f2fd;
    border-radius: 4px;
    padding: 2px 7px;
    margin-right: 8px;
    font-size: 13px;
    user-select: none;
}

.rich-visual-area .t-hl {
    background: #fff3a0;
    border-radius: 3px;
    padding: 1px 4px;
    box-shadow: 0 0 0 1px rgba(240, 165, 0, 0.3);
}

.rich-visual-area .t-qmark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #1976d2;
    color: white;
    font-size: 10px;
    font-weight: 700;
    width: 17px;
    height: 17px;
    border-radius: 50%;
    vertical-align: super;
    margin-right: 4px;
}

.rich-visual-area .t-note {
    font-style: italic;
    font-weight: 700;
    color: #0b6b3a;
    font-size: 13px;
    margin-left: 4px;
}

.rich-source-textarea {
    width: 100%;
    min-height: 240px;
    max-height: 520px;
    padding: 14px 16px;
    border: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.5;
    resize: vertical;
    background: #f8f9fa;
    color: #212529;
}