/*
 * About Page Extended Styles
 * Theme: Cetintas Portfolyo
 */

/* ============================================
   INTRO SECTION
   ============================================ */

.about-intro-section {
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
}

.about-intro-grid {
    margin-top: 50px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-name {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.about-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.about-description {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    font-weight: 400;
}

.about-stats-row {
    display: flex;
    gap: var(--spacing-xl);
}

.about-stat {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.about-stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1.2;
}

.about-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.about-intro-image {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
}

.erp-wheel-image {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    border-radius: var(--radius-lg);
}

/* ============================================
   SHARED SECTION HEADINGS
   ============================================ */

.section-heading {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-heading-light {
    color: white;
}

.section-subheading {
    font-size: var(--font-size-base);
    color: var(--text-muted);
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

/* ============================================
   EXPERTISE SECTION
   ============================================ */

.about-expertise-section {
    padding: var(--spacing-3xl) 0;
    background: white;
}

.about-expertise-section .expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.about-expertise-section .expertise-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.about-expertise-section .expertise-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.about-expertise-section .expertise-icon {
    width: 50px;
    height: 50px;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.about-expertise-section .expertise-icon svg {
    width: 100%;
    height: 100%;
}

.expertise-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.expertise-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* Clickable Expertise Card */
a.expertise-card--clickable {
    display: block;
    text-decoration: none;
    color: inherit;
    position: relative;
    cursor: pointer;
}

a.expertise-card--clickable:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

a.expertise-card--clickable:hover .expertise-icon {
    color: var(--accent-color);
}

a.expertise-card--clickable:hover .expertise-title {
    color: var(--primary-color);
}

.expertise-link-arrow {
    position: absolute;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-base);
}

a.expertise-card--clickable:hover .expertise-link-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* ============================================
   TIMELINE SECTION (Kariyer Yolculuğum)
   ============================================ */

.about-timeline-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.about-timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 40px;
}

/* Vertical line */
.about-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-2xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -33px;
    top: 4px;
    width: 14px;
    height: 14px;
    background: white;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    z-index: 1;
}

.timeline-item:last-child .timeline-marker {
    background: var(--primary-color);
}

.timeline-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
}

.timeline-date {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--primary-color);
    background: rgba(15, 23, 42, 0.05);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.5px;
}

.timeline-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ============================================
   VALUES SECTION (Değerlerim)
   ============================================ */

.about-values-section {
    padding: var(--spacing-3xl) 0;
    background: white;
}

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

.value-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    transition: var(--transition-base);
}

.value-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.value-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-color);
}

.value-icon svg {
    width: 100%;
    height: 100%;
}

.value-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.value-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   CERTIFICATIONS SECTION
   ============================================ */

.about-certifications-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.certification-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.certification-badge:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.certification-icon {
    width: 28px;
    height: 28px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.certification-icon svg {
    width: 100%;
    height: 100%;
}

.certification-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   CTA SECTION
   ============================================ */

.about-cta-section {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-2);
}

.cta-box {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-desc {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: white;
    color: var(--primary-color);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-weight: 700;
    transition: var(--transition-base);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-btn svg {
    width: 16px;
    height: 16px;
}

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

@media (max-width: 1024px) {
    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-intro-content {
        order: 1;
    }

    .about-intro-image {
        order: 2;
    }

    .erp-wheel-image {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

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

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

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

@media (max-width: 768px) {
    .about-name {
        font-size: var(--font-size-2xl);
    }

    .about-description {
        font-size: var(--font-size-base);
    }

    .about-stats-row {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }

    .about-expertise-section .expertise-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }

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

    .section-heading {
        font-size: var(--font-size-2xl);
    }

    .cta-title {
        font-size: var(--font-size-2xl);
    }

    .about-timeline {
        padding-left: 30px;
    }

    .about-timeline::before {
        left: 10px;
    }

    .timeline-marker {
        left: -27px;
        width: 12px;
        height: 12px;
    }
}