/* =========================
   TEACHING RESOURCES SELECTOR
   (Grade / Class / Subject)
   ========================= */

/* Base button style */
.grade-btn,
.class-btn,
.subject-btn {
    background-color: var(--bg-main);
    color: var(--text-main);
    border: 2px solid var(--secondary);
    border-radius: 999px; /* pill */
    padding: 0.5rem 1.25rem;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

    /* Hover state */
    .grade-btn:hover,
    .class-btn:hover,
    .subject-btn:hover {
        background-color: var(--fade-neutral);
        border-color: var(--primary);
        color: var(--primary);
    }

    /* Active / Selected */
    .grade-btn.active,
    .class-btn.active,
    .subject-btn.active {
        background-color: var(--primary);
        border-color: var(--primary);
        color: var(--text-inverse);
    }

    /* Keyboard focus (accessibility) */
    .grade-btn:focus,
    .class-btn:focus,
    .subject-btn:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.3); /* matches --primary */
    }

/* Section headings */
.selection-heading {
    color: var(--text-main);
    border-left: 4px solid var(--primary);
    padding-left: 0.75rem;
    margin-bottom: 0.75rem;
}

/* Final action button */
#goBtn {
    background-color: var(--primary);
    border-color: var(--primary);
    font-weight: 600;
}

    #goBtn:hover {
        background-color: var(--primary-hover);
        border-color: var(--primary-hover);
    }