/* =============================
   ABOUT SECTION
   ============================= */

/* Shared section heading style */
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.section-title span {
    color: var(--green-color);
}

.section-sub {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 2rem;
}

/* About wrapper — stacked on mobile */
.about-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 1.5rem 0;
}

/* Sidebar */
.about-sidebar {
    width: 100%;
}

.about-intro {
    font-size: 1rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* Tabs */
.about-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1rem;
}

.about-tab {
    padding: 0.5rem 1.2rem;
    border: 2px solid var(--secondary-color);
    border-radius: 50px;
    background: transparent;
    color: var(--white-color);
    font-size: 0.9rem;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.about-tab:hover {
    border-color: var(--green-color);
    color: var(--green-color);
}

.about-tab.active {
    background: var(--green-color);
    border-color: var(--green-color);
    color: var(--primary-color);
    font-weight: 600;
}

/* Content Panel */
.about-content-area {
    width: 100%;
    position: relative;
}

.about-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

.about-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.panel-heading {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.panel-heading span {
    color: var(--green-color);
}

/* ---- Timeline ---- */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--secondary-color);
}

.timeline-item {
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: -1.5rem;
    top: 1rem;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--green-color);
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 0 2px var(--green-color);
}

.timeline-card {
    background: var(--secondary-color);
    border: 1px solid rgba(124, 240, 61, 0.15);
    border-radius: 12px;
    padding: 1.2rem 1.4rem;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.timeline-card:hover {
    border-color: var(--green-color);
    transform: translateX(4px);
}

.timeline-year {
    display: inline-block;
    background: rgba(124, 240, 61, 0.15);
    color: var(--green-color);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.2rem 0.8rem;
    border-radius: 50px;
    margin-bottom: 0.6rem;
}

.timeline-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.timeline-company {
    font-size: 0.9rem;
    color: var(--green-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.timeline-card p:last-child {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.6;
}

/* ---- Certifications Grid ---- */
.cert-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.cert-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--secondary-color);
    border: 1px solid rgba(124, 240, 61, 0.15);
    border-radius: 12px;
    padding: 1rem 1.2rem;
    transition: all 0.3s ease;
}

.cert-card:hover {
    border-color: var(--green-color);
    transform: translateY(-3px);
}

.cert-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    border-radius: 10px;
    background: rgba(124, 240, 61, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--green-color);
}

.cert-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.cert-info p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 0.3rem;
}

.cert-year {
    display: inline-block;
    font-size: 0.75rem;
    background: rgba(124, 240, 61, 0.15);
    color: var(--green-color);
    padding: 0.1rem 0.6rem;
    border-radius: 50px;
}

/* ==============================
   DESKTOP 768px+
   ============================== */
@media screen and (min-width: 768px) {
    .about-wrapper {
        flex-direction: row;
        align-items: flex-start;
        gap: 3rem;
        padding: 2rem 0;
    }

    .about-sidebar {
        width: 320px;
        min-width: 280px;
        position: sticky;
        top: 1rem;
    }

    .about-content-area {
        flex: 1;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (min-width: 1024px) {
    .about-sidebar {
        width: 360px;
    }

    .section-title {
        font-size: 3rem;
    }

    .panel-heading {
        font-size: 2rem;
    }

    .about-intro {
        font-size: 1.05rem;
    }

    .about-tab {
        font-size: 1rem;
        padding: 0.6rem 1.4rem;
    }
}

@media (pointer: coarse) and (min-width: 768px) {
    .about-wrapper {
        flex-direction: column;
        gap: 2rem;
        padding: 1.5rem 0;
    }

    .about-sidebar {
        width: 100%;
        min-width: 0;
        position: static;
    }

    .about-content-area {
        width: 100%;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .panel-heading {
        font-size: 1.6rem;
    }

    .cert-grid {
        grid-template-columns: 1fr;
    }
}