*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background:
        radial-gradient(circle at 10% 10%, #dbeafe 0%, rgba(219, 234, 254, 0) 45%),
        radial-gradient(circle at 90% 0%, #eef2ff 0%, rgba(238, 242, 255, 0) 40%),
        #f8fafc;
}

.CodeMirror {
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    min-height: 16rem;
    font-size: 14px;
}

.CodeMirror-lines {
    line-height: 1.45;
}

pre {
    white-space: pre-wrap;
}

.glass-surface {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(6px);
}

.toolbar-btn {
    border: 1px solid #cbd5e1;
    border-radius: 0.55rem;
    padding: 0.45rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #334155;
    background: #ffffff;
    transition: all 140ms ease;
}

.toolbar-btn:hover {
    border-color: #6366f1;
    color: #4338ca;
    box-shadow: 0 8px 22px -18px #4338ca;
}

.toolbar-btn-danger {
    border-color: #fecaca;
    color: #b91c1c;
    background: #fff1f2;
}

.status-pill {
    border-radius: 9999px;
    border: 1px solid #e2e8f0;
    background: #f8fafc;
    padding: 0.275rem 0.55rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.status-dot {
    width: 0.48rem;
    height: 0.48rem;
    border-radius: 9999px;
    display: inline-block;
}

.status-dot-green {
    background: #22c55e;
}

.status-dot-amber {
    background: #f59e0b;
}

.status-dot-red {
    background: #ef4444;
}

.status-dot-gray {
    background: #94a3b8;
}

.panel-title {
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 700;
    color: #64748b;
}

.tab-strip {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 0.6rem;
}

.tab-pill {
    font-size: 0.75rem;
    padding: 0.32rem 0.55rem;
    border-radius: 0.45rem 0.45rem 0 0;
    color: #475569;
}

.tab-pill-active {
    color: #3730a3;
    background: #e0e7ff;
}

.qr-grid {
    width: 122px;
    height: 122px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(11, 1fr);
    gap: 2px;
    padding: 8px;
    background: #fff;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
}

.qr-grid span {
    border-radius: 2px;
    background: #0f172a;
    opacity: 0.9;
}

.session-form p {
    margin-bottom: 0.65rem;
}

.session-form input:not([type="checkbox"]),
.session-form select,
.session-form textarea {
    width: 100%;
    margin-top: 0.3rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.45rem;
    padding: 0.42rem 0.55rem;
    font-size: 0.9rem;
}

.session-form label {
    font-size: 0.86rem;
    color: #334155;
}

.session-form input[type="checkbox"] {
    width: 0.95rem;
    height: 0.95rem;
    margin: 0;
    accent-color: #4f46e5;
}

.session-option {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.builder-form p {
    margin-bottom: 0.65rem;
    max-width: 100%;
}

.builder-form {
    width: 100%;
    min-width: 0;
}

.builder-form input:not([type="checkbox"]),
.builder-form select,
.builder-form textarea {
    width: 100%;
    margin-top: 0.28rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.45rem;
    padding: 0.36rem 0.5rem;
    font-size: 0.84rem;
    background: #ffffff;
}

.builder-form input:focus,
.builder-form select:focus,
.builder-form textarea:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.builder-form label {
    font-size: 0.8rem;
    color: #334155;
}

.builder-form input[type="checkbox"] {
    width: 0.95rem;
    height: 0.95rem;
    margin: 0;
    padding: 0;
    border-radius: 0.2rem;
    accent-color: #4f46e5;
    box-shadow: none;
}

.builder-checkbox-row {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-bottom: 0.75rem;
}

.builder-checkbox-row label {
    margin: 0;
    font-size: 0.8rem;
    line-height: 1;
}

@media (min-width: 1024px) {

    .builder-form input:not([type="checkbox"]),
    .builder-form select {
        height: 2.2rem;
    }

    .builder-form textarea {
        min-height: 4.75rem;
    }

    #id_question {
        min-height: 7.5rem;
    }
}

.warn-card {
    border: 1px solid #fecaca;
    background: linear-gradient(135deg, #fff1f2, #ffffff);
    border-radius: 0.8rem;
    padding: 0.75rem;
}

.lesson-preview-surface {
    border: 1px solid #dbeafe;
    border-radius: 0.9rem;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    padding: 1rem;
}

.lesson-preview-header {
    margin-bottom: 0.9rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px dashed #cbd5e1;
}

.lesson-preview-kicker {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #64748b;
}

.lesson-preview-title {
    margin-top: 0.15rem;
    font-size: 1rem;
    font-weight: 700;
    color: #0f172a;
}

.lesson-preview-flow {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.lesson-preview-block {
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 0.75rem;
    background: #ffffff;
}

.lesson-preview-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.55rem;
}

.lesson-preview-block-header h5 {
    font-size: 0.92rem;
    font-weight: 700;
    color: #1e293b;
}

.preview-pill {
    font-size: 0.68rem;
    padding: 0.16rem 0.42rem;
    border-radius: 9999px;
    font-weight: 600;
}

.preview-pill-markdown {
    background: #f1f5f9;
    color: #334155;
}

.preview-pill-code {
    background: #dcfce7;
    color: #166534;
}

.preview-pill-quiz {
    background: #e0e7ff;
    color: #3730a3;
}

.preview-markdown {
    color: #1e293b;
    line-height: 1.55;
}

.preview-markdown p {
    margin: 0.45rem 0;
}

.preview-markdown h1,
.preview-markdown h2,
.preview-markdown h3,
.preview-markdown h4 {
    color: #0f172a;
    line-height: 1.25;
    margin-top: 0.7rem;
    margin-bottom: 0.45rem;
    font-weight: 700;
}

.preview-markdown h1 {
    font-size: 1.4rem;
}

.preview-markdown h2 {
    font-size: 1.18rem;
}

.preview-markdown h3 {
    font-size: 1.03rem;
}

.preview-markdown ul,
.preview-markdown ol {
    margin: 0.4rem 0 0.55rem 1.2rem;
}

.preview-markdown li {
    margin: 0.2rem 0;
}

.preview-markdown code {
    background: #e2e8f0;
    border-radius: 0.25rem;
    padding: 0.05rem 0.3rem;
    font-size: 0.85em;
}

.preview-code-area {
    width: 100%;
    min-height: 3rem;
    border: 1px solid #d1d5db;
    border-radius: 0.65rem;
    background: #ffffff;
    color: #0f172a;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, Liberation Mono, Courier New, monospace;
    font-size: 0.8rem;
    line-height: 1.45;
    padding: 0.7rem 0.75rem;
    white-space: pre-wrap;
    word-break: break-word;
    overflow: visible;
}

.preview-quiz-list {
    margin-top: 0.45rem;
    display: flex;
    flex-direction: column;
    gap: 0.42rem;
}

.preview-quiz-answer {
    border: 1px solid #e2e8f0;
    border-radius: 0.55rem;
    padding: 0.42rem 0.55rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem;
    background: #ffffff;
}

.preview-quiz-answer-correct {
    border-color: #86efac;
    background: #f0fdf4;
}

.preview-correct-badge {
    font-size: 0.67rem;
    font-weight: 700;
    color: #166534;
    background: #dcfce7;
    padding: 0.12rem 0.38rem;
    border-radius: 9999px;
}