/* ========== KAHOOT-STYLE QUIZ MAKER CSS ========== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: #f0f0f5;
    font-family: 'Roboto', sans-serif;
    color: #3c4043;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── Container ── */
.qm-container {
    max-width: 780px;
    margin: 40px auto;
    padding: 32px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    border: 1px solid #e0e0e0;
}

/* ── Header ── */
.qm-header-area {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f5;
}

.qm-header-title {
    font-size: 26px;
    font-weight: 600;
    color: #1e1e2f;
    display: flex;
    align-items: center;
    gap: 14px;
}

.qm-back-btn {
    text-decoration: none;
    color: #5f6368;
    background: #f1f3f4;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.qm-back-btn:hover {
    background: #e8eaed;
    color: #202124;
}

/* ── Form Steps ── */
.qm-step {
    margin-bottom: 28px;
}

.qm-step-label {
    font-size: 15px;
    font-weight: 600;
    color: #1e1e2f;
    margin-bottom: 8px;
    display: block;
}

.qm-step-desc {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 10px;
    display: block;
}

/* ── Inputs ── */
.qm-input,
.qm-textarea,
.qm-topic-input,
.qm-rich-editor {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    color: #3c4043;
    border: 1.5px solid #dadce0;
    border-radius: 10px;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    font-family: inherit;
}

.qm-input:focus,
.qm-textarea:focus,
.qm-topic-input:focus,
.qm-rich-editor:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.qm-textarea {
    resize: vertical;
    min-height: 110px;
}

.qm-input.error,
.qm-textarea.error {
    border-color: #d93025;
}

.qm-error-text {
    color: #d93025;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.qm-error-text.active {
    display: block;
}

/* ── Pills (type/diff selector) ── */
.qm-options-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.qm-option-pill {
    padding: 10px 22px;
    border-radius: 8px;
    background: #f1f3f4;
    border: 1.5px solid transparent;
    font-size: 14px;
    font-weight: 500;
    color: #3c4043;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qm-option-pill:hover {
    background: #e8eaed;
}

.qm-option-pill.selected {
    background: #ede9fe;
    color: #4f46e5;
    border-color: #6366f1;
}

/* ── Action Area ── */
.qm-action-area {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    text-align: right;
}

/* ── Primary Button ── */
.qm-btn-primary {
    background: #6366f1;
    color: #fff;
    border: none;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 160px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qm-btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.qm-btn-primary:active {
    transform: translateY(0);
}

.qm-btn-primary:disabled {
    background: #dadce0;
    color: #9aa0a6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── Generated Questions Area ── */
#generated-questions-area {
    display: none;
    margin-top: 32px;
}

/* ════════════════════════════════════════
   KAHOOT-STYLE QUESTION BLOCK
════════════════════════════════════════ */
.qm-question-box {
    background: #fff;
    border: 2px solid #e2e8f0;
    border-radius: 20px;
    margin-bottom: 28px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
    transition: box-shadow 0.25s;
}

.qm-question-box:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* ── Question Top Toolbar ── */
.qm-q-toolbar {
    background: #9b51e0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    gap: 8px;
    border-radius: 12px 12px 0 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.qm-q-toolbar-left,
.qm-q-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Badge inputs */
.qm-badge {
    display: flex;
    align-items: center;
    background: transparent;
    border: 2px solid white;
    border-radius: 6px;
    padding: 2px 6px;
    color: white;
    font-size: 12px;
    font-weight: 700;
    gap: 4px;
    height: 40px;
    box-sizing: border-box;
}

.qm-badge label {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: 8px;
    margin: 0;
}

.qm-badge svg {
    color: white;
    width: 20px;
    height: 20px;
}

.qm-badge .badge-text {
    display: flex;
    flex-direction: column;
    font-size: 11px;
    line-height: 1.1;
    margin-right: 2px;
}

.qm-badge input[type=number] {
    width: 28px;
    border: 2px solid white;
    border-radius: 4px;
    font-weight: 800;
    color: #9b51e0;
    background: white;
    text-align: center;
    outline: none;
    padding: 2px 0;
    font-size: 14px;
    -moz-appearance: textfield;
    appearance: textfield;
}

.qm-badge input[type=number]::-webkit-inner-spin-button,
.qm-badge input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

.qm-badge select {
    border: none;
    border-left: 2px solid white;
    border-radius: 0 4px 4px 0;
    background: transparent;
    font-weight: 700;
    color: white;
    outline: none;
    cursor: pointer;
    padding: 4px 6px;
    margin-left: -4px;
    font-size: 13px;
}

.qm-badge select option {
    color: #333;
    background: #fff;
}

.qm-badge input[type=checkbox] {
    width: 20px;
    height: 20px;
    accent-color: #9b51e0;
    cursor: pointer;
    margin: 0;
    appearance: none;
    border: 2px solid white;
    border-radius: 4px;
    background: transparent;
    position: relative;
}

.qm-badge input[type=checkbox]:checked {
    background: white;
}

.qm-badge input[type=checkbox]:checked::after {
    content: '✓';
    position: absolute;
    color: #9b51e0;
    font-size: 16px;
    font-weight: 900;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Tool Buttons */
.qm-q-tool-btn {
    height: 40px;
    padding: 0 10px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border: 2px solid white;
    line-height: 1.1;
    text-align: center;
}

.qm-q-tool-btn.cancel {
    background: transparent;
    color: white;
}

.qm-q-tool-btn.cancel:hover {
    background: rgba(255, 255, 255, 0.15);
}

.qm-q-tool-btn.save {
    background: white;
    color: #9b51e0;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1);
}

.qm-q-tool-btn.save:hover {
    background: #fdfdfd;
}

.qm-q-tool-btn.save:active {
    transform: translateY(4px);
    box-shadow: none;
}

/* ── Question Body (Kahoot Flex Row) ── */
.qm-q-body {
    display: flex;
    flex-direction: row;
    min-height: 280px;
    background: #fff;
    border-bottom: 2px solid #f1f5f9;
}

/* Sidebar styling exactly like mockup */
.qm-q-left-toolbar {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 20px 15px;
    background: #ffffff;
    width: 80px;
    box-sizing: content-box;
}

/* Sidebar Buttons */
.qm-sidebar-btn {
    background: #3b82f6;
    /* Deep blue from mockup */
    border: none;
    border-radius: 8px;
    width: 72px;
    height: 72px;
    color: white;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-weight: 700;
    font-size: 13px;
    transition: all 0.2s;
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.3);
}

.qm-sidebar-btn:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 6px 10px rgba(59, 130, 246, 0.4);
}

.qm-sidebar-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.qm-sidebar-btn svg {
    width: 26px;
    height: 26px;
}

.qm-sidebar-btn .math-icon {
    font-size: 24px;
    font-weight: 900;
    line-height: 1;
}

/* Question content area */
.qm-q-content {
    flex: 1;
    padding: 40px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #fff;
}

.qm-question-title {
    width: 100%;
    min-height: 80px;
    font-size: 28px;
    font-weight: 600;
    color: #4a5568;
    text-align: center;
    border: none;
    outline: none;
    background: transparent;
    resize: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qm-question-title:empty:before {
    content: attr(placeholder);
    color: #a0aec0;
}

/* ── 2x2 Answer Grid ── */
.qm-options-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 8px;
    background: #f8fafc;
}

.qm-q-option {
    position: relative;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    padding: 12px;
    border-radius: 6px;
    cursor: default;
    transition: transform 0.15s, filter 0.15s;
    box-shadow: inset 0 -4px 0 rgba(0, 0, 0, 0.15);
}

.qm-q-option:hover {
    filter: brightness(1.05);
}

/* Colors from screenshot */
.qm-q-option:nth-child(1) {
    background: #e07e10;
}

/* Orange */
.qm-q-option:nth-child(2) {
    background: #3b82f6;
}

/* Blue */
.qm-q-option:nth-child(3) {
    background: #10b981;
}

/* Green */
.qm-q-option:nth-child(4) {
    background: #ef4444;
}

/* Red */

/* Square Checkbox (Selection) */
.qm-correct-cb-square {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.2s;
    position: absolute;
    top: 10px;
    left: 10px;
}

.qm-q-option.correct .qm-correct-cb-square {
    background: #4ade80;
    border-color: #4ade80;
}

.qm-correct-cb-square::after {
    content: '';
}

.qm-q-option.correct .qm-correct-cb-square::after {
    content: '✓';
    color: #fff;
    font-size: 18px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qm-option-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    font-family: inherit;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qm-option-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

/* Bottom tools for options */
.qm-opt-bottom {
    display: flex;
    align-items: center;
    gap: 6px;
    position: absolute;
    bottom: 10px;
    left: 10px;
}

.qm-opt-action-btn {
    background: rgba(0, 0, 0, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 6px;
    color: #fff;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.qm-opt-action-btn svg,
.qm-opt-action-btn span {
    transform: scale(0.8);
}

.qm-opt-action-btn:hover {
    background: rgba(255, 255, 255, 0.4);
}

.qm-opt-math-preview {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 4px;
}

/* ── Inline Math (Rendered KaTeX) ── */
.inline-math {
    display: inline-block;
    vertical-align: middle;
    padding: 0 4px;
    cursor: default;
    user-select: none;
    background: #f1f5f9;
    border-radius: 4px;
    margin: 0 2px;
}

.inline-math:hover {
    background: #e2e8f0;
}

.qm-option-input[contenteditable=true]:empty:before {
    content: attr(placeholder);
    color: rgba(255, 255, 255, 0.65);
    pointer-events: none;
    display: block;
}

/* ── Below answer blocks: save to bank + add option ── */
.qm-q-footer {
    padding: 12px 18px;
    border-top: 1.5px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.qm-save-bank-label {
    display: flex;
    align-items: center;
    gap: 7px;
    cursor: pointer;
    color: #4f46e5;
    font-size: 13px;
    font-weight: 600;
}

.qm-save-bank-label input[type=checkbox] {
    accent-color: #6366f1;
    width: 16px;
    height: 16px;
}

.qm-add-option-btn {
    background: transparent;
    color: #6366f1;
    border: 2px dashed #6366f1;
    border-radius: 8px;
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.qm-add-option-btn:hover {
    background: #ede9fe;
}

/* ── Formula button ── */
.qm-formula-btn {
    background: linear-gradient(135deg, #ede9fe, #ddd6fe);
    border: 1.5px solid #c4b5fd;
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 700;
    color: #4f46e5;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.qm-formula-btn:hover {
    background: linear-gradient(135deg, #ddd6fe, #c4b5fd);
}

/* ── Glass card (AI generated) ── */
.qm-glass-card {
    background: #fff;
}

/* ── Notification ── */
.qm-notification {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: #323232;
    color: #fff;
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    transform: translateY(100px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
}

.qm-notification.show {
    transform: translateY(0);
}

/* ── Equation Editor Modal (enhanced) ── */
#math-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

#math-modal-box {
    background: #fff;
    border-radius: 16px;
    width: 95%;
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
}

.eq-modal-header {
    background: #46178f;
    color: #fff;
    padding: 14px 20px;
    border-radius: 16px 16px 0 0;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.eq-modal-close {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
}

.eq-modal-body {
    padding: 18px 20px;
}

.eq-input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
}

#math-modal-input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid #c4b5fd;
    border-radius: 10px;
    font-size: 15px;
    font-family: 'Courier New', monospace;
    outline: none;
    color: #1e1e2f;
}

#math-modal-input:focus {
    border-color: #6366f1;
}

.eq-insert-btn {
    background: #6366f1;
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s;
}

.eq-insert-btn:hover {
    background: #4f46e5;
}

/* Symbol grid */
.eq-symbols-section {
    margin-bottom: 14px;
}

.eq-section-label {
    font-size: 11px;
    font-weight: 700;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
}

.eq-symbol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
    gap: 6px;
    justify-content: center;
}

.eq-sym-btn {
    background: #f8f7ff;
    border: 1.5px solid #e2e8f0;
    border-radius: 7px;
    padding: 7px 4px;
    font-size: 15px;
    cursor: pointer;
    text-align: center;
    transition: all 0.12s;
    color: #1e1e2f;
    font-family: 'KaTeX_Main', 'Times New Roman', serif;
    line-height: 1;
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.eq-sym-btn:hover {
    background: #ede9fe;
    border-color: #6366f1;
    color: #4f46e5;
    transform: scale(1.1);
}

.eq-sym-btn.wide {
    grid-column: span 2;
    font-size: 12px;
    font-family: inherit;
    font-weight: 700;
}

/* Preview */
#math-preview-label {
    font-size: 12px;
    color: #6366f1;
    font-weight: 700;
    margin: 10px 0 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#math-preview-box {
    min-height: 44px;
    border: 2px dashed #c4b5fd;
    border-radius: 10px;
    padding: 10px 14px;
    background: #f8f7ff;
    font-size: 18px;
    overflow-x: auto;
    color: #1e1e2f;
}

/* KaTeX */
.katex-display {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px 0;
}

/* ── Media queries ── */
@media (max-width: 600px) {
    .qm-container {
        margin: 12px;
        padding: 16px;
    }

    .qm-options-list {
        grid-template-columns: 1fr;
    }

    .eq-symbol-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .qm-q-toolbar {
        padding: 8px 12px;
        gap: 8px;
    }
}