/* =========================
   FILE: styles.css
========================= */

:root{
  --primary:#0a7cff;
  --dark:#0f172a;
  --light:#f8fafc;
}

.top-nav{
  position:fixed;
  top:0;
  width:100%;
  z-index:999;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);
  padding:12px 0;
}

.nav-inner{
  max-width:1200px;
  margin:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 24px;
}

.logo img{
  height:42px;
}

.seo-menu{
  list-style:none;
  display:flex;
  gap:36px;
}

.seo-menu a{
  text-decoration:none;
  font-weight:600;
  color:#0f172a;
  font-size:.95rem;
  position:relative;
}

.seo-menu a::after{
  content:'';
  position:absolute;
  bottom:-6px;
  left:0;
  width:0;
  height:2px;
  background:#0a7cff;
  transition:.3s;
}

.seo-menu a:hover::after{
  width:100%;
}

*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:'Inter',sans-serif;
  background:var(--light);
  color:var(--dark);
  line-height:1.6;
}

section{
  padding:90px 8%;
}

.hero{
  min-height:90vh;
  display:flex;
  align-items:center;
  background:linear-gradient(135deg,#0f172a,#020617);
  color:white;
}

.hero-content{
  max-width:700px;
  animation:fadeUp 1.2s ease;
}

.hero h1{
  font-size:3.2rem;
  margin-bottom:20px;
}

.hero p{
  font-size:1.2rem;
  opacity:.9;
}

.btn{
  display:inline-block;
  margin-top:30px;
  padding:14px 32px;
  background:var(--primary);
  color:white;
  text-decoration:none;
  border-radius:40px;
  font-weight:600;
  transition:.3s;
}

.btn:hover{
  transform:translateY(-3px);
  box-shadow:0 10px 30px rgba(10,124,255,.4);
}

/* Image Sections */
.image-section{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}

.image-box{
  height:380px;
  border-radius:24px;
  overflow:hidden;
  position:relative;
}

.image-box img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s;
}

.image-box:hover img{
  transform:scale(1.05);
}

.text-box h2{
  font-size:2.2rem;
  margin-bottom:20px;
}

.text-box p{
  font-size:1.05rem;
  opacity:.85;
}

/* Education Section */
.edu{
  background:white;
  text-align:center;
}

.edu h2{
  font-size:2.5rem;
  margin-bottom:25px;
}

.edu p{
  max-width:800px;
  margin:auto;
  font-size:1.1rem;
  opacity:.85;
}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(40px)}
  to{opacity:1;transform:translateY(0)}
}

/* Responsive */
@media(max-width:900px){
  .image-section{
    grid-template-columns:1fr;
  }
  .hero h1{
    font-size:2.4rem;
  }
}

.site-footer{
  background:#020617;
  color:#e5e7eb;
  padding:70px 8% 30px;
}

.footer-inner{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:50px;
  max-width:1300px;
  margin:auto;
}

.footer-brand img{
  height:42px;
  margin-bottom:18px;
}

.footer-brand p{
  opacity:.8;
  max-width:300px;
}

.footer-links h4{
  font-size:1rem;
  margin-bottom:16px;
  color:white;
}

.footer-links ul{
  list-style:none;
}

.footer-links li{
  margin-bottom:10px;
}

.footer-links a{
  color:#cbd5f5;
  text-decoration:none;
  font-size:.95rem;
}

.footer-links a:hover{
  color:#0a7cff;
}

.footer-bottom{
  text-align:center;
  margin-top:50px;
  font-size:.85rem;
  opacity:.6;
}

/* Responsive */
@media(max-width:900px){
  .footer-inner{
    grid-template-columns:1fr 1fr;
  }
}

@media(max-width:500px){
  .footer-inner{
    grid-template-columns:1fr;
    text-align:center;
  }
}

/* =========================
   Fade slideshow styles
========================= */

.edu-slider{
  max-width: 980px;
  margin: 34px auto 0;
  border-radius: 22px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 18px 55px rgba(0,0,0,.12);
  background: #fff;
}

.edu-slides{
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 280px;
}

.edu-slide{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 900ms ease;
  pointer-events: none;
}

.edu-slide.is-active{
  opacity: 1;
}

.edu-dots{
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(15,23,42,.10);
}

.edu-dot{
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(15,23,42,.28);
}

.edu-dot.is-active{
  background: rgba(10,124,255,.95);
}

/* Mobile tweaks */
@media(max-width:900px){
  .edu-slider{ margin-top: 26px; }
  .edu-slides{ min-height: 220px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .edu-slide{ transition: none; }
}
/* ===============================
   MOBILE DROPDOWN HAMBURGER MENU
   (works with: .menuBtn, #seoMenu)
================================= */

/* Hide hamburger on desktop */
.menuBtn{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(15,23,42,.14);
  background:rgba(255,255,255,.92);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:6px;
}

.menuBtn span{
  display:block;
  width:22px;
  height:2px;
  background:#0f172a;
  border-radius:999px;
  transition:transform .25s ease, opacity .25s ease;
}

/* Turn hamburger into X when open */
.menuBtn.is-open span:nth-child(1){
  transform:translateY(8px) rotate(45deg);
}
.menuBtn.is-open span:nth-child(2){
  opacity:0;
}
.menuBtn.is-open span:nth-child(3){
  transform:translateY(-8px) rotate(-45deg);
}

/* MOBILE dropdown */
@media (max-width:900px){
  .nav-inner{
    position:relative;
  }

  /* show hamburger */
  .menuBtn{
    display:flex;
  }

  /* hide menu by default on mobile */
  #seoMenu{
    position:absolute;
    top:64px;
    left:24px;
    right:24px;

    display:none;
    flex-direction:column;
    gap:12px;

    padding:14px;
    border-radius:16px;

    background:rgba(255,255,255,.98);
    border:1px solid rgba(15,23,42,.10);
    box-shadow:0 20px 55px rgba(0,0,0,.14);
    z-index:1000;
  }

  /* show when toggled */
  #seoMenu.is-open{
    display:flex;
  }

  #seoMenu li{
    list-style:none;
  }

  #seoMenu a{
    display:block;
    padding:10px 12px;
    border-radius:12px;
  }

  #seoMenu a:hover{
    background:rgba(10,124,255,.08);
  }

  /* Disable desktop underline animation on mobile (if you have it) */
  #seoMenu a::after{
    display:none;
  }
}