/* ===================== AI COACH ===================== */
.coach-header { margin-bottom: 14px; }

.coach-quota {
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.coach-quota strong { color: var(--primary-color); }

.coach-subtabs {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.coach-subtabs .btn { flex: 1 1 160px; }

/* ---------- แต่งประโยค ---------- */
.coach-word-input { width: 100%; margin-top: 10px; }

.coach-sentence {
    width: 100%;
    resize: vertical;
    font-family: inherit;
    line-height: 1.6;
}

.coach-result-head {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.coach-score {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--primary-color);
}

.coach-ok { color: var(--success-color); }
.coach-bad { color: var(--danger-color); }

.coach-field-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 14px;
    margin-bottom: 4px;
}

.coach-corrected {
    font-size: 1.0625rem;
    line-height: 1.6;
}

.coach-feedback {
    margin-top: 12px;
    line-height: 1.7;
}

.coach-tips {
    margin: 8px 0 0;
    padding-left: 20px;
    color: var(--text-muted);
    line-height: 1.7;
}

.coach-better {
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.6;
}

/* ---------- ฝึกสนทนา ---------- */
.coach-scenario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
    margin-bottom: 18px;
}

.coach-scenario-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 2px;
    padding: 16px 10px;
    font-family: inherit;
    font-size: 0.8125rem;
    color: var(--text-color);
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.15s ease;
}
.coach-scenario-card:hover { border-color: var(--primary-color); transform: translateY(-1px); }
.coach-scenario-emoji { font-size: 1.75rem; }

.coach-level-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.coach-chat-panel { display: flex; flex-direction: column; }

.coach-chat-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.coach-chat-log {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 55vh;
    overflow-y: auto;
    padding-right: 2px;
    margin-bottom: 12px;
}

.coach-bubble { display: flex; max-width: 85%; }

.coach-bubble-coach {
    align-self: flex-start;
    align-items: flex-start;
    gap: 8px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 2px;
    padding: 10px 12px;
    line-height: 1.6;
}

.coach-bubble-user {
    align-self: flex-end;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.coach-bubble-learner {
    background: var(--primary-color);
    color: var(--card-bg);
    border-radius: 2px;
    padding: 10px 12px;
    line-height: 1.6;
}

.coach-bubble-note {
    background: var(--warning-color);
    color: var(--card-bg);
    border-radius: 2px;
    padding: 8px 10px;
    font-size: 0.8125rem;
    line-height: 1.6;
    max-width: 100%;
}
.coach-bubble-note p { margin: 0; }
.coach-suggestion { margin-top: 4px !important; opacity: 0.92; }

.coach-chat-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.coach-chat-input { flex: 1; }
.coach-mic-btn { flex-shrink: 0; }

/* ---------- phones: keep the chat input above the bottom tab bar ---------- */
@media (max-width: 768px) {
    .coach-chat-panel { padding-bottom: 4px; }
    .coach-chat-input-row {
        position: sticky;
        bottom: calc(64px + env(safe-area-inset-bottom));
        background: var(--card-bg);
        padding: 8px 0 2px;
    }
    .coach-scenario-grid { grid-template-columns: repeat(auto-fill, minmax(105px, 1fr)); }
}

@media (max-width: 360px) {
    .coach-subtabs .btn { flex: 1 1 100%; }
}