/* ============================================================
   Kids Kingdom - Capital LETTERS Page Stylesheet
   ============================================================ */

/* ================= HOW TO LEARN ================= */
.how-to-learn {
    padding: 50px 0;
}

.how-to-learn h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.step-card {
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 14px;
}

.step-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.step-card p {
    font-size: 1rem;
    color: #666;
}

/* ================= LETTERS TOOL: 3 letter-blocks per row ================= */
.letters-section {
    padding: 50px 0;
}

.letters-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

.letters-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px 30px;
}

.letters-block {
    display: flex;
    flex-direction: column;
}

/* Square box, image as background, swaps on tab click */
.letters-box {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 0.70;
    border-radius: 16px;
    overflow: hidden;
}

.letters-box-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.letters-box-letter {
    position: absolute;
    top: 10px;
    left: 14px;
    font-family: var(--font-heading);
    font-weight: 400;
    font-size: 5.8rem;
    line-height: 1;
    text-shadow: 0 1px 4px rgba(255,255,255,0.9), 0 0 12px rgba(255,255,255,0.7);
}

.letters-tabs {
    display: flex;
    justify-content: center;
    margin-top: 10px;
    gap: 10px;
    flex-direction: row;
    flex-wrap: wrap;
}

.letters-tab {
    flex: 0 0 auto;
    background: none;
    border: none;
    cursor: pointer;
    text-align: center;
    padding: 2px 2px;
    font-family: var(--font-body);
    font-size: 1.2rem;
    font-weight: 500;
    color: #999;
    text-transform: capitalize;
    transition: color 0.2s;
}

.letters-tab.active {
    color: var(--color-primary);
}

.letters-tab:hover {
    color: var(--color-primary);
}

/* ================= CONTENT SECTION ================= */
.letters-content {
    padding: 50px 0;
}

.letters-content p {
    margin-bottom: 16px;
    color: #555;
    font-size: 1.05rem;
}

/* ================= RESPONSIVE ================= */
@media (min-width: 1280px) and (max-width: 1400px) {
    .letters-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px 20px;
    }

    .letters-box-letter {
        font-size: 4rem;
    }
	.hero-content h1 {
		font-size: 2.9rem;
	}
}

@media (max-width: 1280px) and (min-width: 1024px) {
    .letters-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 32px 20px;
    }

    .letters-box-letter {
        font-size: 4rem;
    }
	.hero-content h1 {
		font-size: 3rem;
	}
}


@media (max-width: 1023px) and (min-width: 768px) {
    .letters-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px 10px;
    }

    .letters-box-letter {
        font-size: 4rem;
    }
	.letters-tabs {
		margin-top: 12px;
		gap: 5px;
		display: flex;
		flex-direction: row;
		flex-wrap: wrap;
	}
	.hero-content h1 {
		font-size: 2.7rem;
	}	
}


@media (max-width: 767px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .letters-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 28px 16px;
    }

    .letters-box-letter {
        font-size: 4.6rem;
    }

    .letters-tab {
        font-size: 0.8rem;
        padding: 6px 2px;
    }
	.letters-tabs {
		margin-top: 12px;
		gap: 5px;
	}
	.hero-content h1 {
		font-size: 2.9rem;
	}
}


@media (max-width: 580px) {

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .letters-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 28px 16px;
    }

    .letters-box-letter {
        font-size: 2.6rem;
    }

    .letters-tab {
        font-size: 0.8rem;
        padding: 6px 2px;
    }
	.letters-tabs {
		margin-top: 12px;
		gap: 2px;
	}
	.hero-content h1 {
		font-size: 2rem;
	}
}



@media (max-width: 420px) {
    .letters-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px 10px;
    }
	.letters-box-letter {
        font-size: 3rem;
    }

    .letters-tab {
        font-size: 0.8rem;
        padding: 2px 2px;
    }
	.hero-content h1 {
		font-size: 1.7rem;
	}
}