:root {
    --deep-blue: #0f172a;
    --brand-blue: #1e40af;
    --brand-yellow: #facc15;
    --text-light: #f8fafc;
    --transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background-color: var(--deep-blue); color: var(--text-light); line-height: 1.6; overflow-x: hidden; }
html { scroll-behavior: smooth; }

.container { max-width: 1300px; margin: 0 auto; padding: 0 40px; width: 100%; }

/* Navigation */
nav { position: fixed; width: 100%; height: 90px; display: flex; align-items: center; background: rgba(15, 23, 42, 0.9); backdrop-filter: blur(15px); border-bottom: 1px solid rgba(255,255,255,0.05); z-index: 1000; }
.nav-content { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.logo-wrap { display: flex; align-items: center; height: 50px; text-decoration: none; }
.logo-img { height: 100%; width: auto; transition: transform 0.3s ease; }
.logo-wrap:hover .logo-img { transform: scale(1.05); }

.nav-links { display: flex; list-style: none; gap: 40px; }
.nav-links a { text-decoration: none; color: rgba(255,255,255,0.7); font-weight: 500; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; transition: var(--transition); }
.nav-links a:hover { color: var(--brand-yellow); }

/* Hero */
.hero { height: 100vh; position: relative; overflow: hidden; display: flex; align-items: center; }
.slide-container { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1.5s ease-in-out; background-size: cover; background-position: center; }
.slide.active { opacity: 1; }
.slide::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to right, rgba(15, 23, 42, 0.95) 20%, rgba(15, 23, 42, 0.3) 100%); }
.hero-content { max-width: 800px; position: relative; z-index: 10; }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; line-height: 1.1; margin-bottom: 25px; letter-spacing: -2px; }
.hero h1 span { color: var(--brand-yellow); display: block; }
.hero p { font-size: 1.2rem; color: rgba(255,255,255,0.8); margin-bottom: 40px; border-left: 4px solid var(--brand-yellow); padding-left: 20px; }
.btn-main { padding: 18px 45px; background: var(--brand-yellow); color: var(--deep-blue); text-decoration: none; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; border-radius: 2px; transition: var(--transition); display: inline-block; cursor: pointer; border: none; }
.btn-main:hover { background: #fff; transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.2); }

/* Sectors */
.sectors { padding: 140px 0; background: #0c1222; }
.section-tag { color: var(--brand-yellow); font-weight: 800; font-size: 11px; text-transform: uppercase; letter-spacing: 4px; display: block; margin-bottom: 10px; }
.section-title { font-size: 2.8rem; margin-bottom: 60px; font-weight: 700; }
.sector-accordion { display: flex; gap: 15px; height: 550px; width: 100%; }
.s-card { flex: 1; position: relative; background-image: var(--bg); background-size: cover; background-position: center; border-radius: 12px; overflow: hidden; cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.s-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 10%, rgba(15, 23, 42, 0.2) 100%); transition: 0.5s; z-index: 1; }
.s-card:hover { flex: 3.5; }
.s-card-content { position: relative; z-index: 2; padding: 30px; width: 100%; text-align: center; }
.s-card i { font-size: 3.2rem; color: var(--brand-yellow); margin-bottom: 20px; display: block; }
.s-card h3 { font-size: 1.8rem; font-weight: 700; line-height: 1.2; color: #fff; white-space: nowrap; }
.s-card-desc { font-size: 1.05rem; color: rgba(255,255,255,0.8); max-height: 0; opacity: 0; overflow: hidden; transition: all 0.5s ease; margin: 0 auto; max-width: 400px; }
.s-card:hover .s-card-desc { max-height: 150px; opacity: 1; margin-top: 25px; }

/* Vizyon Section */
.stats-section { padding: 120px 0; background: var(--deep-blue); border-top: 1px solid rgba(255,255,255,0.05); }
.stats-container { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.stats-text h2 { font-size: 2.5rem; margin-bottom: 25px; font-weight: 800; line-height: 1.2; }
.stats-text p { color: rgba(255,255,255,0.6); font-size: 1.1rem; margin-bottom: 30px; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.stat-item { background: rgba(255,255,255,0.03); padding: 40px; border-radius: 4px; border-bottom: 3px solid var(--brand-yellow); transition: var(--transition); text-align: left; }
.stat-item h4 { font-size: 3rem; color: var(--brand-yellow); font-weight: 800; margin-bottom: 5px; }
.stat-item p { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 2px; opacity: 0.7; }

/* İletişim */
.contact-section { padding: 140px 0; background: linear-gradient(135deg, #0c1222 0%, #0f172a 100%); border-top: 1px solid rgba(255,255,255,0.05); }
.contact-wrapper { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 80px; align-items: center; }
.contact-desc { color: rgba(255,255,255,0.6); margin-bottom: 50px; max-width: 500px; font-size: 1.1rem; }
.contact-list { display: flex; flex-direction: column; gap: 40px; }
.contact-item { display: flex; gap: 25px; align-items: flex-start; }
.c-icon { width: 54px; height: 54px; background: rgba(250, 204, 21, 0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--brand-yellow); font-size: 20px; flex-shrink: 0; }
.c-text h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 2px; color: var(--brand-yellow); margin-bottom: 8px; }
.c-text p, .c-text a { font-size: 1.1rem; color: var(--text-light); text-decoration: none; font-weight: 400; line-height: 1.5; transition: 0.3s; }
.c-text a:hover { color: var(--brand-yellow); }
.contact-action-card { background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.05); padding: 60px; border-radius: 4px; text-align: center; position: relative; overflow: hidden; }
.contact-action-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--brand-yellow); }

/* Footer */
.footer-main { background: #080d1a; padding: 60px 0; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; }
.designed-by { font-weight: 800; color: rgba(255,255,255,0.5); }

/* Responsive */
@media (max-width: 968px) {
    .sector-accordion { flex-direction: column; height: auto; gap: 15px; }
    .s-card { height: 250px; flex: none; }
    .s-card:hover { height: 350px; flex: none; }
    .contact-wrapper, .stats-container { grid-template-columns: 1fr; gap: 60px; }
    .footer-bottom { flex-direction: column; gap: 20px; text-align: center; }
}