/* =================================================================== */
/* === HAKKIMDA V2.1 - DÜZELTİLMİŞ SÜRÜM === */
/* =================================================================== */

/* DÜZELTİLDİ: Sayfa Başlığı stilleri geri eklendi ve temaya uyarlandı */
.page-header {
    position: relative;
    background: linear-gradient(rgba(13, 17, 23, 0.9), rgba(13, 17, 23, 0.9)), url('https://images.unsplash.com/photo-1519691235941-38a382c49169');
    background-size: cover;
    background-position: center;
    color: var(--primary-text);
    padding: 5rem 0;
    text-align: center;
}

.about-content {
    background-color: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; align-items: center; }
.about-image img { width: 100%; height: auto; border-radius: 8px; }
.about-text h2 { font-size: 2.5rem; color: var(--primary-text); }
.about-text h3 { font-size: 1.2rem; color: var(--accent); margin-bottom: 1.5rem; }
.stats { display: flex; gap: 2rem; margin-top: 2rem; border-top: 1px solid var(--border-color); padding-top: 2rem; }
.stat-item h4 { font-size: 2.5rem; color: var(--accent); }
.stat-item p { color: var(--secondary-text); }

/* ZAMAN TÜNELİ (Tasarım aynı, hatasız) */
.timeline-section { background: transparent; }
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline-item { width: 100%; margin-bottom: 2rem; padding: 0; opacity: 0; transform: translateY(50px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.timeline-item.is-visible { opacity: 1; transform: translateY(0); }
.timeline-content { padding: 2rem; background-color: var(--surface); border-radius: 8px; border: 1px solid var(--border-color); position: relative; overflow: hidden; transition: box-shadow 0.3s ease; }
.timeline-content:hover { box-shadow: 0 0 30px var(--accent-glow); }
.timeline-content h4 { font-size: 1rem; color: var(--accent); font-weight: 700; }
.timeline-content h3 { font-size: 1.3rem; margin-top: 5px; margin-bottom: 10px; color: var(--primary-text); }
.timeline-content p { color: var(--secondary-text); }

@media (max-width: 992px) { .about-grid { grid-template-columns: 1fr; text-align: center; } .about-image { margin-bottom: 2rem; } .stats { justify-content: center; } }