/* ============================================================
   Kids Kingdom - Addition Tool Stylesheet
   Interactive object-combine visual addition demonstrator.
   ============================================================ */

.addition-tool {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 20px 40px;
}

/* ================= NUMBER PICKERS ================= */
.addition-pickers {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.addition-picker {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.addition-picker label {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--color-dark);
    font-weight: 600;
}

.addition-picker-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.addition-picker-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--color-bg);
    color: var(--color-primary);
    font-size: 1.4rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.addition-picker-btn:hover {
    background: #ffe0d9;
    transform: scale(1.08);
}

.addition-picker-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-dark);
    min-width: 50px;
    text-align: center;
}

.addition-plus-sign {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-top: 24px;
}

.addition-show-btn {
    display: block;
    margin: 0 auto 36px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 14px 36px;
    border-radius: 999px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.05rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.addition-show-btn:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
}

/* ================= EQUATION DISPLAY ================= */
.addition-equation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.addition-group {
    background: #fff;
    border: 2px solid var(--color-bg);
    border-radius: var(--radius);
    padding: 18px;
    min-width: 140px;
    min-height: 140px;
    display: flex;
    flex-wrap: wrap;
    align-content: center;
    justify-content: center;
    gap: 6px;
}

.addition-group .obj {
    font-size: 1.8rem;
    opacity: 0;
    transform: scale(0.5);
    animation: additionPop 0.35s ease forwards;
}

@keyframes additionPop {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.addition-symbol {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-dark);
}

.addition-result-group {
    background: var(--color-bg);
    border: 2px solid var(--color-primary);
}

.addition-total {
    text-align: center;
    margin-top: 10px;
}

.addition-total-number {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--color-primary);
}

/* ================= RESPONSIVE ================= */
@media (max-width: 767px) {
    .addition-equation {
        gap: 10px;
    }

    .addition-group {
        min-width: 110px;
        min-height: 110px;
        padding: 12px;
    }

    .addition-group .obj {
        font-size: 1.4rem;
    }

    .addition-symbol {
        font-size: 1.8rem;
    }

    .addition-picker-value {
        font-size: 1.6rem;
    }
}

/* ============================================================
   STORY IMAGES GRID - 2 textbook-style illustrations after hero
   Mobile: 1 per row (stacked). Desktop/laptop: 2 per row.
   ============================================================ */
.story-images-grid {
    /* max-width: 1000px; */
    margin: 10px auto 40px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.story-images-grid img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    /* box-shadow: 0 3px 14px rgba(0,0,0,0.08); */
    display: block;
}

@media (max-width: 767px) {
    .story-images-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ============================================================
   HOW ADDITION WORKS - step-by-step teaching cards
   ============================================================ */
.addition-steps-section {
    max-width: 800px;
    margin: 10px auto 50px;
    padding: 0 20px;
}

.addition-steps-heading {
    text-align: center;
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.addition-steps-subheading {
    text-align: center;
    color: #777;
    font-size: 1rem;
    margin-bottom: 30px;
}

.addition-steps-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.addition-step-card {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    background: #fff;
    border-radius: var(--radius);
    padding: 20px 22px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.06);
}

.addition-step-number {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.2rem;
}

.addition-step-body h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.addition-step-body p {
    font-size: 0.98rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.addition-step-emoji {
    font-size: 1.3rem;
    margin-left: 4px;
}

/* Hindi version of each step - slightly smaller, shown right below English */
.addition-step-body .step-hi-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-primary);
    margin-top: 10px;
    margin-bottom: 4px;
}

.addition-step-body .step-hi-desc {
    font-size: 0.92rem;
    color: #777;
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 767px) {
    .addition-step-card {
        padding: 16px 18px;
        gap: 14px;
    }

    .addition-step-number {
        width: 38px;
        height: 38px;
        font-size: 1.05rem;
    }

    .addition-steps-heading {
        font-size: 1.35rem;
    }
}