.action-dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 25px;
}
.action-dashboard-grid.is-single-mode {
    grid-template-columns: 1fr !important;
}
.exam-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}
.exam-title-row h1 { min-width: 0; }
.course-favorite-toggle.favorite-toggle {
    width: auto;
    height: 40px;
    flex: 0 0 auto;
    gap: 6px;
    margin-top: 8px;
    padding: 0 13px;
    border-radius: 20px;
    font-size: 20px;
}
.course-favorite-toggle .favorite-label {
    font-size: 12px;
    font-weight: 750;
    color: var(--text-secondary);
}
.course-favorite-toggle.is-active .favorite-label { color: #a86f00; }

@media (max-width: 768px) {
    .action-dashboard-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .exam-title-row h1 { font-size: 1.65rem !important; }
    .course-favorite-toggle.favorite-toggle { padding: 0 11px; }
    .course-favorite-toggle .favorite-label { display: none; }
}

.action-mode-box {
    background: var(--color-white);
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.2s ease;
}
.action-mode-box.ai-theme {
    border-color: var(--primary-color);
    background: linear-gradient(180deg, #f7faff 0%, var(--color-white) 100%);
}

.mode-box-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}
.mode-box-title {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mode-btn-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.btn-mode-tab {
    text-decoration: none;
    padding: 14px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: var(--secondary-bg);
    color: var(--text-color);
    transition: all 0.2s;
}
.btn-mode-tab.active {
    background: var(--primary-color);
    color: var(--color-white);
    border-color: var(--primary-color);
}

.btn-mode-random {
    padding: 14px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    border: 1px solid var(--border-soft);
    background: var(--color-white);
    color: var(--primary-color);
    transition: all 0.2s;
}
.btn-mode-random:hover {
    background: var(--surface-muted);
}

.btn-solve-pill, .btn-ai-solve {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color) !important;
    color: var(--color-white) !important;
    font-size: 14px;
    font-weight: 700;
    padding: 9px 20px;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: 0 4px 10px rgba(0, 113, 227, 0.25);
}
.btn-solve-pill:hover, .btn-ai-solve:hover {
    background: #005bb5 !important;
    color: var(--color-white) !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(0, 113, 227, 0.35);
}

.btn-disabled-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--border-soft) !important;
    color: #8e8e93 !important;
    font-size: 13px;
    font-weight: 600;
    padding: 9px 18px;
    border-radius: 30px;
    text-decoration: none;
    cursor: not-allowed;
    pointer-events: none;
}

.exam-unique-intro {
    background: #fafafc;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    padding: 20px 24px;
    margin-bottom: 25px;
    font-size: 14px;
    color: #48484a;
    line-height: 1.7;
}
.exam-unique-intro strong {
    color: var(--text-color);
}

.exam-notice-box {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    background: #f8f9fa;
    border: 1px solid #ebebeb;
    border-radius: 10px;
    padding: 11px 15px;
    margin-bottom: 20px;
    font-size: 13px;
    color: #666;
    line-height: 1.4;
}
.exam-notice-box.ai-notice {
    background: #f0f7ff;
    border-color: #d6e8ff;
    color: #0056b3;
}
.exam-notice-box .notice-icon {
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 1px;
}

.tab-content-panel {
    display: none;
    animation: fadeIn 0.25s ease-in-out;
}
.tab-content-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.ai-custom-card {
    background: var(--secondary-bg);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 16px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.ai-custom-card:hover {
    background: #ebebed;
}
.ai-custom-card.active {
    background: #f0f7ff;
    border-color: var(--primary-color);
}
.ai-card-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 4px;
}
.ai-custom-card.active .ai-card-title {
    color: var(--primary-color);
}
.ai-card-desc {
    font-size: 11.5px;
    color: var(--gray-text);
}