:root {
    --sec-dark: #0f172a;
    --sec-primary: #0ea5e9; /* Sky Blue */
    --sec-accent: #10b981; /* Emerald Green (Safe) */
    --sec-glow: rgba(14, 165, 233, 0.5);
}

body { background-color: #f8fafc; font-family: 'Plus Jakarta Sans', sans-serif; }

/* 1. HERO: THE RADAR */
.security-hero {
    position: relative; padding: 180px 0 120px; text-align: center;
    background: radial-gradient(circle at center, #1e293b 0%, #020617 100%);
    overflow: hidden; color: white;
}

/* Radar Effect (Düzeltildi: Tam Daire) */
.radar-container {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 800px; height: 800px; pointer-events: none; opacity: 0.4;
}
.radar-circle {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    border: 1px solid rgba(14, 165, 233, 0.2); border-radius: 50%;
}
.rc-1 { width: 300px; height: 300px; }
.rc-2 { width: 500px; height: 500px; }
.rc-3 { width: 700px; height: 700px; border-style: dashed; }

.radar-sweep {
    position: absolute; top: 50%; left: 50%; 
    width: 700px; height: 700px; /* En dış çember kadar */
    margin-left: -350px; margin-top: -350px; /* Tam merkezleme */
    border-radius: 50%; /* Kare olmaması için */
    background: conic-gradient(from 0deg, transparent 0%, rgba(14, 165, 233, 0.15) 60deg, transparent 61deg);
    animation: radar-spin 4s linear infinite;
}
@keyframes radar-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* Shield Icon Pulse */
.shield-pulse {
    animation: shield-beat 3s infinite ease-in-out;
}
@keyframes shield-beat {
    0% { transform: scale(1); filter: drop-shadow(0 0 0px rgba(16, 185, 129, 0)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 0 20px rgba(16, 185, 129, 0.4)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 0px rgba(16, 185, 129, 0)); }
}

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7; padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 700;
    margin-bottom: 25px; backdrop-filter: blur(5px);
}
.secure-dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; box-shadow: 0 0 10px #10b981; }

/* 2. LAYERS GRID */
.layers-section { position: relative; z-index: 10; margin-top: -60px; padding-bottom: 100px; }

.layer-card {
    background: white; border-radius: 20px; padding: 40px;
    border: 1px solid #e2e8f0; box-shadow: 0 20px 40px -10px rgba(0,0,0,0.05);
    transition: 0.3s; position: relative; overflow: hidden;
}
.layer-card:hover { transform: translateY(-10px); border-color: var(--sec-primary); box-shadow: 0 30px 60px -15px rgba(14, 165, 233, 0.15); }

.lc-icon {
    width: 60px; height: 60px; border-radius: 16px; background: #f0f9ff; color: var(--sec-primary);
    display: flex; align-items: center; justify-content: center; font-size: 1.8rem; margin-bottom: 20px;
    transition: 0.3s;
}
.layer-card:hover .lc-icon { background: var(--sec-primary); color: white; transform: rotate(10deg); }

.lc-num {
    position: absolute; top: 20px; right: 20px; font-size: 4rem; font-weight: 900;
    color: #f1f5f9; z-index: 0; line-height: 1; pointer-events: none;
}

.lc-content { position: relative; z-index: 1; }
.lc-title { font-size: 1.3rem; font-weight: 800; color: #0f172a; margin-bottom: 10px; }
.lc-desc { font-size: 0.95rem; color: #64748b; line-height: 1.6; }

/* 3. TECH SPECS (Dark Strip) */
.tech-strip {
    background: #0f172a; padding: 80px 0; color: white; position: relative; overflow: hidden;
}
.ts-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center;
}
.ts-item { position: relative; }
.ts-item::after {
    content: ''; position: absolute; right: -15px; top: 20%; height: 60%; width: 1px;
    background: rgba(255,255,255,0.1);
}
.ts-item:last-child::after { display: none; }

.ts-val { font-size: 2.5rem; font-weight: 900; background: linear-gradient(to right, #38bdf8, #818cf8); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 5px; }
.ts-label { font-size: 0.9rem; color: #94a3b8; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

/* 4. DATA CENTER INFO */
.dc-section { padding: 100px 0; }
.dc-wrapper {
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.dc-image-box {
    position: relative; border-radius: 24px; overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.2);
}
.dc-overlay {
    position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,23,42,0.8), transparent);
    display: flex; align-items: flex-end; padding: 30px;
}
.certification-badge {
    background: white; color: #0f172a; padding: 10px 20px; border-radius: 12px;
    font-weight: 800; font-size: 0.9rem; display: flex; align-items: center; gap: 10px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

@media (max-width: 1024px) {
    .ts-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
    .ts-item::after { display: none; }
    .dc-wrapper { grid-template-columns: 1fr; }
    .radar-container { display: none; } /* Mobilde performansı koru */
}