/* ===========================================
   About – Tech Blue Professional
   =========================================== */

/* ---------- HEADER ---------- */

.about-header {
    background: linear-gradient(180deg, var(--white) 0%, var(--slate-50) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4xl) 0;
}

.about-header-inner {
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}

.about-header-inner h1 {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.about-tagline {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ---------- DATA ---------- */

.about-data {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.data-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.data-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.data-number {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 800;
    color: var(--color-text);
    line-height: 1;
    letter-spacing: -0.03em;
}

.data-suffix {
    font-size: 0.5em;
    font-weight: 700;
    color: var(--color-primary);
    vertical-align: super;
}

.data-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.data-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    max-width: fit-content;
    margin: 0 auto;
}

.data-location i {
    font-size: 0.9rem;
}

/* ---------- TIMELINE ---------- */

.about-timeline {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.timeline-h {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-md);
    position: relative;
}

.timeline-h::before {
    content: '';
    position: absolute;
    top: 68px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--color-border);
    z-index: 0;
}

.timeline-h-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline-h-year {
    font-size: 1rem;
    font-weight: 800;
    color: var(--color-primary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 6px 16px;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.timeline-h-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 2px var(--color-primary);
    margin-bottom: var(--space-lg);
    flex-shrink: 0;
}

.timeline-h-content {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.timeline-h-tag {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 3px 12px;
    border-radius: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    width: fit-content;
    margin: 0 auto;
}

.timeline-h-content p {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
}

/* ---------- INTRO ---------- */

.about-intro {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-intro-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.about-intro-left .meta {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 4px 14px;
    border-radius: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    width: fit-content;
}

.about-intro-left h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    line-height: 1.15;
}

.about-intro-right {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.about-intro-right p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.85;
}

/* ---------- VALUES ---------- */

.about-values {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.value-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.value-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.value-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: var(--space-sm);
}

.value-card h3 {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.3;
}

.value-card p {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ---------- CONTACT ---------- */

.about-contact {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.contact-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}

.contact-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.contact-card-wide {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.contact-card-wide .contact-value {
    font-size: 0.9rem;
    max-width: 600px;
}

.contact-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.contact-card-wide .contact-icon {
    margin-bottom: 0;
}

.contact-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.contact-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ---------- CTA ---------- */

.about-cta {
    background: linear-gradient(135deg, var(--blue-800) 0%, var(--color-primary) 50%, var(--cyan-600) 100%);
    padding: var(--space-2xl) 0;
}

.about-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.about-cta-left h2 {
    color: var(--white);
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-weight: 700;
    margin-bottom: 6px;
}

.about-cta-left p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.88rem;
}

.about-cta-buttons {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.about-cta .btn-ghost {
    border-color: rgba(255, 255, 255, 0.35);
    color: var(--white);
}

.about-cta .btn-ghost:hover {
    background: var(--white);
    color: var(--color-primary);
    border-color: var(--white);
}

.about-cta .btn-ghost-muted {
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
}

.about-cta .btn-ghost-muted:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 1024px) {
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline-h {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .timeline-h::before {
        display: none;
    }

    .timeline-h-item {
        flex-direction: row;
        text-align: left;
        gap: var(--space-lg);
        padding: var(--space-md) 0;
        border-bottom: 1px solid var(--color-border);
    }

    .timeline-h-item:last-child {
        border-bottom: none;
    }

    .timeline-h-year {
        margin-bottom: 0;
        min-width: 64px;
        text-align: center;
    }

    .timeline-h-dot {
        display: none;
    }

    .timeline-h-content {
        padding: 0;
    }

    .timeline-h-tag {
        margin: 0;
    }

    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

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

@media (max-width: 768px) {
    .about-header {
        padding: var(--space-2xl) 0;
    }

    .about-data,
    .about-timeline,
    .about-intro,
    .about-values,
    .about-contact {
        padding: var(--space-2xl) 0;
    }

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

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

    .contact-card-wide {
        flex-direction: column;
        align-items: center;
        gap: 6px;
    }

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

    .about-cta-inner {
        flex-direction: column;
        text-align: center;
    }

    .about-cta-buttons {
        flex-direction: column;
        width: 100%;
    }

    .about-cta-buttons .btn {
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .data-grid {
        grid-template-columns: 1fr;
    }

    .timeline-h-item {
        flex-direction: column;
        text-align: center;
        gap: var(--space-sm);
    }

    .timeline-h-tag {
        margin: 0 auto;
    }
}