/* ==========================================
   TOPICS COMPONENT
   ========================================== */

.topics-section {
    padding: 0rem 0;
    background: var(--white);
    margin-bottom: 5rem;
}

.topics-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2rem;
    align-items: stretch;
}

.topics-list {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    padding-right: 1.5rem;
}

.topic-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--gray);
    text-decoration: none;
    transition: color 0.25s ease, transform 0.25s ease;
}

.topic-item:hover,
.topic-item.active {
    color: var(--primary);
    transform: translateX(6px);
}

.topic-number {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent);
}

.topic-name {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.2;
}

.topics-preview {
    position: relative;
    min-height: 520px;
    border-radius: 20px;
    overflow: hidden;
    background: #102e24;
    box-shadow: 0 18px 40px rgba(15, 47, 36, 0.18);
}

.topic-panel {
    position: absolute;
    inset: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.02);
    transition:
        opacity 0.45s ease,
        visibility 0.45s ease,
        transform 0.45s ease;
}

.topic-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 20, 16, 0.12) 0%,
        rgba(10, 20, 16, 0.36) 46%,
        rgba(10, 20, 16, 0.72) 100%
    );
}

.topic-panel.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.topic-overlay {
    position: absolute;
    left: 2rem;
    right: 2rem;
    bottom: 2rem;
    max-width: 460px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.5);
    border-radius: 16px;
    padding: 1.4rem 1.4rem 1.25rem;
    box-shadow: 0 16px 34px rgba(0,0,0,.12);
}

.topic-overlay h3 {
    margin-bottom: .45rem;
    font-size: 1.45rem;
    color: var(--dark);
}

.topic-overlay p {
    color: var(--gray);
    margin: 0;
}

/* ==========================================
   TOPICS 2 COMPONENT
   ========================================== */

.topics-2-section {
    padding: 0rem 0;
    background: var(--white);
    margin-bottom: 5rem;
}

.topics-2-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: stretch;
}

.topics-2-list {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border);
    padding-left: 1.5rem;
}

.topics-2-item {
    display: flex;
    flex-direction: column;
    gap: .35rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--gray);
    text-decoration: none;
    transition: color .25s ease, transform .25s ease;
}

.topics-2-item:hover,
.topics-2-item.active {
    color: var(--primary);
    transform: translateX(-6px);
}

.topics-2-number {
    font-size: .85rem;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--accent);
}

.topics-2-name {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.2;
}

.topics-2-preview {
    position: relative;
    min-height: 520px;
    border-radius: 20px;
    overflow: hidden;
    background: #102e24;
    box-shadow: 0 18px 40px rgba(15,47,36,.18);
}

.topics-2-panel {
    position: absolute;
    inset: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.02);
    transition:
        opacity .45s ease,
        visibility .45s ease,
        transform .45s ease;
}

.topics-2-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10,20,16,.12) 0%,
        rgba(10,20,16,.36) 46%,
        rgba(10,20,16,.72) 100%
    );
}

.topics-2-panel.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.topics-2-overlay {
    position: absolute;
    left: 2rem;
    right: 2rem;
    bottom: 2rem;
    max-width: 460px;
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.5);
    border-radius: 16px;
    padding: 1.4rem 1.4rem 1.25rem;
    box-shadow: 0 16px 34px rgba(0,0,0,.12);
}

.topics-2-overlay h3 {
    margin-bottom: .45rem;
    font-size: 1.45rem;
    color: var(--dark);
}

.topics-2-overlay p {
    color: var(--gray);
    margin: 0;
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width:991px) {

    .topics-layout,
    .topics-2-layout {
        grid-template-columns: 1fr;
    }

    .topics-list {
        border-right: none;
        padding-right: 0;
    }

    .topics-2-list {
        border-left: none;
        padding-left: 0;
    }

    .topics-preview,
    .topics-2-preview {
        min-height: 400px;
    }

}

@media (max-width:767px) {

    .topic-name,
    .topics-2-name {
        font-size: 1.1rem;
    }

    .topic-overlay,
    .topics-2-overlay {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        padding: 1rem;
    }

    .topic-overlay h3,
    .topics-2-overlay h3 {
        font-size: 1.2rem;
    }

    .topics-preview,
    .topics-2-preview {
        min-height: 320px;
    }

}






.topics-subtitle-header{
    text-align: center;
    max-width: 780px;
    margin: 0 auto 2.5rem auto;
    padding: 0 1rem;
}

.topics-subtitle-title{
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.topics-subtitle-subtitle{
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--gray);
    opacity: 0.95;
}

/* subtle accent line under title */
.topics-subtitle-header::after{
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background: var(--primary);
    margin: 14px auto 0;
    border-radius: 99px;
}