:root {
    --di-blue-dark:  #090a51;
    --di-blue:       #090a51;
    --di-blue-mid:   #090a51;
    --di-blue-light: #d0d1f0;
    --di-blue-pale:  #ebebfa;
    --di-accent:     #38bdf8;
    --di-white:      #ffffff;
    --di-gray-100:   #f1f5f9;
    --di-gray-400:   #94a3b8;
    --di-gray-600:   #475569;
    --di-radius:     20px;
    --di-radius-sm:  10px;
    --di-shadow:     0 8px 40px rgba(9,10,81,0.10);
    --di-shadow-lg:  0 20px 60px rgba(9,10,81,0.22);
    --di-transition: 0.4s cubic-bezier(0.4,0,0.2,1);
}

/* ── Section ── */
.di-section {
    position: relative;
    padding: 80px 0 100px;
    background: linear-gradient(160deg, var(--di-blue-pale) 0%, var(--di-white) 50%, #e0f2fe 100%);
    overflow: hidden;
}
.di-bg-circle { position: absolute; border-radius: 50%; pointer-events: none; z-index: 0; }
.di-bg-circle--1 { width: 600px; height: 600px; background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%); top: -200px; right: -150px; }
.di-bg-circle--2 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(56,189,248,0.10) 0%, transparent 70%); bottom: -100px; left: -100px; }
.di-container { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ── Header ── */
.di-header { text-align: center; margin-bottom: 56px; }
.di-badge { display: inline-block; background: var(--di-blue-light); color: var(--di-blue-mid); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 6px 18px; border-radius: 50px; margin-bottom: 18px; }
.di-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--di-blue-dark); line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.02em; }
.di-subtitle { font-size: 1.05rem; color: var(--di-gray-600); max-width: 520px; margin: 0 auto; line-height: 1.7; }

/* ── Masonry Grid ── */
.di-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: start;       /* masonry: her kart kendi yüksekliğinde */
}

/* ── Grid Item ── */
.di-item {
    position: relative;
    break-inside: avoid;
}

/* Featured kart hafif öne çıksın */
.di-item--featured {
    grid-row: span 1;
}

/* ── Badge ── */
.di-card-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--di-blue-mid), var(--di-accent));
    color: var(--di-white);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 5px 16px;
    border-radius: 50px;
    white-space: nowrap;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(37,99,235,0.35);
}

/* ── Kart ── */
.di-card {
    background: var(--di-white);
    border-radius: var(--di-radius);
    padding: 40px 32px 36px;
    box-shadow: var(--di-shadow);
    border: 1.5px solid rgba(219,234,254,0.8);
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--di-transition), transform var(--di-transition);
    position: relative;
    overflow: hidden;
}
.di-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--di-blue-mid), var(--di-accent));
    opacity: 0;
    transition: opacity var(--di-transition);
}
.di-card:hover { box-shadow: var(--di-shadow-lg); transform: translateY(-4px); }
.di-card:hover::before { opacity: 1; }

/* Featured kart koyu tema */
.di-item--featured .di-card {
    background: linear-gradient(160deg, var(--di-blue-dark) 0%, #1a3a6e 100%);
    border-color: transparent;
    box-shadow: var(--di-shadow-lg);
    color: var(--di-white);
}
.di-item--featured .di-card::before { opacity: 1; height: 3px; background: linear-gradient(90deg, var(--di-accent), #818cf8); }

/* ── Kart İçi ── */
.di-card-header { margin-bottom: 28px; }
.di-card-icon { width: 48px; height: 48px; background: var(--di-blue-light); border-radius: var(--di-radius-sm); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; color: var(--di-blue-mid); }
.di-card-icon svg { width: 24px; height: 24px; }
.di-item--featured .di-card-icon { background: rgba(56,189,248,0.15); color: var(--di-accent); }

.di-card-name { font-size: 1.3rem; font-weight: 700; color: var(--di-blue-dark); margin: 0 0 8px; letter-spacing: -0.01em; }
.di-item--featured .di-card-name { color: var(--di-white); }

.di-card-desc { font-size: 0.9rem; color: var(--di-gray-600); line-height: 1.6; margin: 0; }
.di-item--featured .di-card-desc { color: rgba(255,255,255,0.65); }

.di-card-price-wrap { display: flex; align-items: baseline; gap: 8px; padding: 20px 0; border-top: 1px solid var(--di-blue-light); border-bottom: 1px solid var(--di-blue-light); margin-bottom: 24px; }
.di-item--featured .di-card-price-wrap { border-color: rgba(255,255,255,0.12); }

.di-card-price { font-size: 2rem; font-weight: 800; color: var(--di-blue-mid); letter-spacing: -0.03em; line-height: 1; }
.di-item--featured .di-card-price { color: var(--di-accent); }

.di-card-price-note { font-size: 0.82rem; color: var(--di-gray-400); font-weight: 500; }

.di-card-features { list-style: none; padding: 0; margin: 0 0 32px; flex: 1; display: flex; flex-direction: column; gap: 12px; }
.di-card-feature { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; color: var(--di-gray-600); line-height: 1.5; }
.di-item--featured .di-card-feature { color: rgba(255,255,255,0.8); }

.di-card-feature-icon { flex-shrink: 0; width: 20px; height: 20px; background: var(--di-blue-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--di-blue-mid); margin-top: 1px; }
.di-card-feature-icon svg { width: 12px; height: 12px; }
.di-item--featured .di-card-feature-icon { background: rgba(56,189,248,0.15); color: var(--di-accent); }

.di-card-btn { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 14px 24px; background: var(--di-blue-light); color: var(--di-blue-mid); font-size: 0.92rem; font-weight: 700; border-radius: var(--di-radius-sm); text-decoration: none; transition: all var(--di-transition); margin-top: auto; }
.di-card-btn svg { width: 16px; height: 16px; transition: transform var(--di-transition); }
.di-card-btn:hover { background: var(--di-blue-mid); color: var(--di-white); }
.di-card-btn:hover svg { transform: translateX(4px); }
.di-card-btn--featured { background: linear-gradient(135deg, var(--di-blue-mid), var(--di-accent)); color: var(--di-white); box-shadow: 0 8px 24px rgba(37,99,235,0.4); }
.di-card-btn--featured:hover { background: linear-gradient(135deg,#1d4ed8,#0ea5e9); color: var(--di-white); box-shadow: 0 12px 32px rgba(37,99,235,0.5); }

/* ── Responsive ── */
@media (max-width: 1024px) {
    .di-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 600px) {
    .di-section { padding: 60px 0 80px; }
    .di-grid { grid-template-columns: 1fr; gap: 24px; }
    .di-card { padding: 32px 24px; }
    .di-item--featured { transform: none; }
}