.ai-explanation-section {
    margin-top: 1.25rem;
    padding: 1rem;
    border: 1px solid var(--ai-panel-border);
    border-radius: 18px;
    background: linear-gradient(180deg, var(--ai-surface-soft), var(--ai-surface-elevated));
}

.ai-explanation-trigger {
    width: 100%;
    justify-content: center;
}

.ai-explanation-status {
    margin-top: 0.85rem;
    color: var(--ai-muted-strong);
    font-size: 0.96rem;
}

.ai-explanation-result {
    margin-top: 1rem;
}

.ai-explanation-panel {
    border: 1px solid var(--ai-panel-border-soft);
    border-radius: 16px;
    background: var(--ai-surface);
    padding: 1rem 1.1rem;
}

.ai-explanation-body {
    line-height: 1.65;
    color: var(--ai-ink);
    white-space: normal;
}

.ai-explanation-meta {
    margin-top: 0.85rem;
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

.ai-explanation-source {
    font-size: 0.9rem;
    color: var(--ai-muted);
}

.medaran-upgrade {
    margin-top: 1rem;
    padding: 0.95rem 1rem;
    border: 1px solid var(--ai-panel-border);
    border-radius: 15px;
    background: linear-gradient(180deg, var(--ai-surface-soft), var(--ai-surface));
}

.medaran-upgrade[hidden] {
    display: none;
}

.medaran-upgrade-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.medaran-upgrade-copy strong {
    display: block;
    color: var(--ai-headline);
}

.medaran-upgrade-copy span {
    display: block;
    margin-top: 0.25rem;
    color: var(--ai-muted);
    font-size: 0.9rem;
    line-height: 1.4;
}

.medaran-upgrade-btn {
    flex: 0 0 auto;
    border-radius: 999px;
    font-weight: 700;
    white-space: nowrap;
}

.medaran-upgrade-status {
    margin-top: 0.6rem;
    color: var(--ai-muted-strong);
    font-size: 0.9rem;
}

.medaran-feedback {
    margin-top: 1rem;
    padding-top: 0.95rem;
    border-top: 1px solid var(--ai-divider);
}

.medaran-followups {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--ai-divider);
}

.medaran-followups-head h4 {
    margin: 0;
    font-size: 1rem;
    color: var(--ai-headline);
}

.medaran-followups-head p {
    margin: 0.4rem 0 0;
    color: var(--ai-muted);
    line-height: 1.5;
    font-size: 0.92rem;
}

.medaran-followups-limit {
    margin-top: 0.85rem;
    font-size: 0.92rem;
    color: var(--ai-muted-strong);
}

.medaran-followups-list {
    margin-top: 1rem;
    display: grid;
    gap: 0.9rem;
}

.medaran-followup-empty {
    padding: 0.9rem 1rem;
    border: 1px dashed var(--ai-divider-strong);
    border-radius: 14px;
    background: var(--ai-empty-surface);
    color: var(--ai-muted-strong);
}

.medaran-dialogue-item {
    display: grid;
    gap: 0.65rem;
}

.medaran-dialogue-bubble {
    padding: 0.9rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--ai-divider);
}

.medaran-dialogue-bubble-user {
    background: var(--ai-user-bubble);
}

.medaran-dialogue-bubble-ai {
    background: var(--ai-ai-bubble);
}

.medaran-dialogue-role {
    display: inline-block;
    margin-bottom: 0.35rem;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--ai-role);
}

.medaran-dialogue-text {
    color: var(--ai-ink);
    line-height: 1.65;
}

.medaran-followup-form {
    margin-top: 1rem;
}

.medaran-followup-label {
    display: block;
    margin-bottom: 0.55rem;
    font-weight: 700;
    color: var(--ai-label);
}

.medaran-followup-composer {
    border: 1px solid var(--ai-panel-border);
    border-radius: 18px;
    background:
        radial-gradient(circle at top right, var(--ai-composer-glow), transparent 32%),
        linear-gradient(180deg, var(--ai-surface), var(--ai-surface-soft));
    box-shadow: var(--ai-composer-shadow);
    overflow: hidden;
}

.medaran-followup-form textarea {
    width: 100%;
    min-height: 118px;
    resize: vertical;
    border: 0;
    padding: 1rem 1rem 0.8rem;
    font: inherit;
    line-height: 1.6;
    color: var(--ai-ink);
    background: transparent;
}

.medaran-followup-form textarea::placeholder {
    color: var(--ai-placeholder);
}

.medaran-followup-form textarea:focus {
    outline: none;
}

.medaran-followup-form textarea:disabled {
    color: var(--ai-disabled-ink);
    background: var(--ai-disabled-bg);
}

.medaran-followup-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1rem 1rem;
    border-top: 1px solid var(--ai-divider);
    background: var(--ai-toolbar-bg);
}

.medaran-followup-hint {
    font-size: 0.86rem;
    color: var(--ai-muted);
    line-height: 1.4;
}

.medaran-followup-submit {
    border: 0;
    border-radius: 999px;
    background: var(--ai-submit-bg);
    color: var(--study-on-accent);
    padding: 0.78rem 1.15rem;
    font-weight: 700;
    box-shadow: var(--ai-submit-shadow);
}

.medaran-followup-submit:hover:not(:disabled),
.medaran-followup-submit:focus-visible:not(:disabled) {
    background: var(--ai-submit-hover-bg);
    color: var(--study-on-accent);
}

.medaran-followup-submit:disabled {
    opacity: 0.65;
    box-shadow: none;
}

.medaran-followup-status {
    margin-top: 0.65rem;
    font-size: 0.9rem;
    color: var(--ai-muted);
}

.medaran-feedback-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.medaran-feedback-btn.is-active {
    border-color: var(--ai-feedback-active-border);
    background: var(--ai-feedback-active-bg);
    color: var(--ai-feedback-active-ink);
}

.medaran-feedback-status {
    margin-top: 0.65rem;
    font-size: 0.9rem;
    color: var(--ai-muted);
}

@media (max-width: 640px) {
    .medaran-upgrade-content {
        flex-direction: column;
        align-items: stretch;
    }

    .medaran-upgrade-btn {
        width: 100%;
    }

    .medaran-feedback-buttons {
        flex-direction: column;
    }

    .medaran-followup-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .medaran-followup-submit {
        width: 100%;
    }
}


/* Medaran semantic explanation presentation v2 */
.ai-explanation-panel {
    padding: 0;
    overflow: hidden;
    background: var(--ai-surface);
    box-shadow: 0 12px 34px rgba(29, 38, 55, 0.08);
}

.medaran-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.1rem 0.9rem;
    border-bottom: 1px solid var(--ai-divider);
    background: linear-gradient(180deg, var(--ai-surface-soft), var(--ai-surface));
}

.medaran-panel-head h3 {
    margin: 0.12rem 0 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1.08rem;
    line-height: 1.25;
    color: var(--ai-headline);
}

.medaran-panel-eyebrow {
    font: 700 0.68rem/1 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0.14em;
    color: var(--ai-muted);
}

.medaran-source-badge {
    flex: 0 0 auto;
    padding: 0.38rem 0.68rem;
    border: 1px solid var(--ai-divider-strong);
    border-radius: 999px;
    background: var(--ai-surface);
    color: var(--ai-muted-strong);
    font: 650 0.76rem/1 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.ai-explanation-body {
    padding: 0.9rem 1rem 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 0.98rem;
    line-height: 1.55;
    letter-spacing: 0;
}

.medaran-explanation-stack {
    display: grid;
    gap: 0.72rem;
}

.medaran-section,
.medaran-memory-callout,
.medaran-warning,
.medaran-extra {
    border: 1px solid var(--ai-divider);
    border-radius: 14px;
    background: var(--ai-surface-soft);
}

.medaran-section { padding: 0.86rem 0.92rem; }

.medaran-section-label {
    margin-bottom: 0.42rem;
    color: var(--ai-headline);
    font-size: 0.9rem;
    font-weight: 750;
    line-height: 1.25;
}

.medaran-section-copy,
.medaran-option-reason,
.medaran-memory-copy,
.medaran-warning-copy,
.medaran-extra-copy {
    color: var(--ai-ink);
    font-size: 0.95rem;
    line-height: 1.55;
}

.medaran-section-answer {
    border-color: var(--ai-feedback-active-border);
    background: var(--ai-feedback-active-bg);
}

.medaran-answer-list { display: grid; gap: 0.35rem; }

.medaran-answer-value {
    color: var(--ai-feedback-active-ink);
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.38;
}

.medaran-section-logic,
.medaran-section-options { background: var(--ai-surface); }

.medaran-section-options { padding-bottom: 0.72rem; }
.medaran-option-list { display: grid; gap: 0; }

.medaran-option-item {
    padding: 0.72rem 0;
    border-top: 1px solid var(--ai-divider);
}

.medaran-option-item:first-child { padding-top: 0.38rem; border-top: 0; }

.medaran-option-name {
    margin-bottom: 0.2rem;
    color: var(--ai-headline);
    font-size: 0.92rem;
    font-weight: 760;
    line-height: 1.35;
}

.medaran-option-reason { color: var(--ai-muted-strong); }
.medaran-option-item-plain { color: var(--ai-ink); }

.medaran-memory-callout {
    padding: 0.86rem 0.92rem;
    border-left: 4px solid var(--ai-feedback-active-border);
    background: var(--ai-user-bubble);
}

.medaran-memory-callout .medaran-section-label { margin-bottom: 0.3rem; }

.medaran-warning {
    padding: 0.86rem 0.92rem;
    border-color: #d9a441;
    background: rgba(217, 164, 65, 0.08);
}

.medaran-extra { overflow: hidden; background: var(--ai-surface); }

.medaran-extra summary {
    cursor: pointer;
    list-style: none;
    padding: 0.82rem 0.92rem;
    color: var(--ai-headline);
    font-size: 0.9rem;
    font-weight: 750;
}

.medaran-extra summary::-webkit-details-marker { display: none; }
.medaran-extra summary::after { content: "+"; float: right; color: var(--ai-muted); font-size: 1.05rem; }
.medaran-extra[open] summary::after { content: "−"; }
.medaran-extra-copy { padding: 0 0.92rem 0.92rem; }

.medaran-feedback { margin: 0 1rem 1rem; padding-top: 0.9rem; }

.medaran-feedback-title {
    margin-bottom: 0.55rem;
    color: var(--ai-muted-strong);
    font: 650 0.84rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.medaran-feedback-buttons {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
}

.medaran-feedback-btn {
    min-height: 42px;
    padding: 0.62rem 0.75rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 700;
}

.medaran-upgrade,
.medaran-followups { margin-left: 1rem; margin-right: 1rem; }

@media (max-width: 640px) {
    .ai-explanation-section { padding: 0.72rem; border-radius: 16px; }
    .medaran-panel-head { padding: 0.9rem 0.9rem 0.78rem; }
    .medaran-panel-head h3 { font-size: 1rem; }
    .medaran-source-badge { padding: 0.34rem 0.55rem; font-size: 0.7rem; }
    .ai-explanation-body { padding: 0.72rem; font-size: 0.94rem; line-height: 1.5; }
    .medaran-section,
    .medaran-memory-callout,
    .medaran-warning { padding: 0.78rem 0.8rem; border-radius: 12px; }
    .medaran-section-copy,
    .medaran-option-reason,
    .medaran-memory-copy,
    .medaran-warning-copy,
    .medaran-extra-copy { font-size: 0.92rem; line-height: 1.5; }
    .medaran-option-item { padding: 0.62rem 0; }
    .medaran-feedback-buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .medaran-feedback { margin-left: 0.72rem; margin-right: 0.72rem; }
    .medaran-upgrade,
    .medaran-followups { margin-left: 0.72rem; margin-right: 0.72rem; }
}