/* =========================================================
   GRUNDPFEILER SECTION (WHITE THEME PREMİUM)
   ========================================================= */

.pfeiler-section {
    padding: 100px 0;
    background-color: #ffffff;
    /* Saf Beyaz Zemin */
    font-family: 'Inter', sans-serif;
}

.pfeiler-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- BAŞLIK AYARI --- */
.section-title {
    text-align: center;
    font-family: 'Expletus Sans', cursive;
    font-size: 2.5rem;
    color: #103b7b;
    /* Pars Laciverti */
    margin-bottom: 70px;
    letter-spacing: 2px;
    position: relative;
    text-transform: uppercase;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: #ff6b00;
    /* Pars Turuncusu imza çizgi */
}

/* --- KART GRİD YAPISI --- */
.pfeiler-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    /* Masaüstünde 4 sütun */
    gap: 30px;
}

/* --- KART TASARIMI --- */
.pfeiler-card {
    background: #ffffff;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: left;
    position: relative;
    transition: all 0.4s ease;
    border-bottom: 4px solid #f1f1f1;
    /* Başlangıçta hafif çizgi */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    /* Çok hafif soft gölge */
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pfeiler-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(16, 59, 123, 0.1);
    border-bottom-color: #ff6b00;
    /* Hoverda turuncu parlar */
}

/* --- NUMARALANDIRMA (01, 02...) --- */
.pfeiler-card .num {
    font-family: 'Expletus Sans', cursive;
    font-size: 3.5rem;
    font-weight: 900;
    color: rgba(16, 59, 123, 0.05);
    /* Arkada devasa şeffaf sayı */
    position: absolute;
    top: 10px;
    right: 20px;
    transition: color 0.3s ease;
}

.pfeiler-card:hover .num {
    color: rgba(255, 107, 0, 0.1);
    /* Hoverda sayı hafifçe turunculaşır */
}

.pfeiler-card h3 {
    color: #103b7b;
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
}

.pfeiler-card p {
    color: #555;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
    position: relative;
    z-index: 2;
}

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

/* --- TABLETLER (1024px) --- */
@media screen and (max-width: 1024px) {
    .pfeiler-grid {
        grid-template-columns: repeat(2, 1fr);
        /* 2x2 düzeni */
    }

    .section-title {
        font-size: 2rem;
    }
}

/* --- TELEFONLAR (768px - Samsung/iPhone) --- */
@media screen and (max-width: 768px) {
    .pfeiler-section {
        padding: 60px 0;
    }

    .pfeiler-grid {
        grid-template-columns: 1fr;
        /* Tek sütun */
        gap: 20px;
    }

    .pfeiler-card {
        padding: 35px 25px;
        text-align: center;
        /* Mobilde merkezleme şık durur */
    }

    .pfeiler-card .num {
        right: 50%;
        transform: translateX(50%);
        font-size: 3rem;
    }

    .section-title {
        font-size: 1.6rem;
    }
}