/* ===== CSS Reset & Base ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;transition:background-color .3s,color .3s,border-color .3s,box-shadow .3s,transform .3s}

/* ===== CSS Custom Properties (Theme) ===== */
:root{
  --primary:#1a1a2e;
  --secondary:#16213e;
  --accent:#e94560;
  --accent2:#0f3460;
  --bg:#f8f9fa;
  --text:#2d3436;
  --card-bg:#fff;
  --glass:rgba(255,255,255,0.7);
  --shadow:0 8px 32px rgba(0,0,0,0.1);
  --radius:16px;
  --radius-sm:8px;
  --transition:0.3s ease
}

[data-theme="dark"]{
  --bg:#0d1117;
  --text:#e6edf3;
  --card-bg:#161b22;
  --glass:rgba(22,27,34,0.8);
  --shadow:0 8px 32px rgba(0,0,0,0.4);
  --primary:#0d1117;
  --secondary:#161b22
}

/* ===== Typography & Body ===== */
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica Neue,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale
}

a{color:var(--accent);text-decoration:none}
img{max-width:100%;height:auto;display:block}

/* ===== Utility ===== */
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Header & Navigation ===== */
header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--glass);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,0.1)
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:70px
}
.logo{
  font-size:1.5rem;
  font-weight:800;
  background:linear-gradient(135deg,var(--accent),#ff6b6b);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text
}
nav ul{display:flex;list-style:none;gap:24px}
nav a{
  font-weight:500;
  position:relative;
  padding:4px 0;
  color:var(--text)
}
nav a::after{
  content:'';
  position:absolute;
  bottom:0;left:0;
  width:0;height:2px;
  background:var(--accent);
  transition:width .3s
}
nav a:hover::after{width:100%}

/* Mobile menu toggle */
.menu-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
  padding:5px;
  background:none;
  border:none
}
.menu-toggle span{
  width:28px;height:3px;
  background:var(--text);
  border-radius:2px;
  transition:.3s
}
.mobile-nav{
  display:none;
  position:fixed;
  top:70px;left:0;right:0;bottom:0;
  background:var(--card-bg);
  z-index:999;
  padding:40px 20px;
  overflow-y:auto
}
.mobile-nav.active{display:block}
.mobile-nav ul{list-style:none;display:flex;flex-direction:column;gap:20px}
.mobile-nav a{
  font-size:1.2rem;
  padding:10px 0;
  display:block;
  border-bottom:1px solid rgba(255,255,255,0.05);
  color:var(--text)
}

/* Dark mode toggle */
.dark-toggle{
  background:none;
  border:none;
  color:var(--text);
  font-size:1.3rem;
  cursor:pointer;
  padding:8px
}

/* ===== Hero Section ===== */
.hero{
  min-height:90vh;
  display:flex;
  align-items:center;
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,var(--primary),var(--secondary),var(--accent2))
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 20% 50%,rgba(233,69,96,0.15),transparent 50%),
             radial-gradient(circle at 80% 50%,rgba(15,52,96,0.2),transparent 50%);
  pointer-events:none
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:700px;
  padding:60px 0
}
.hero h1{
  font-size:3.5rem;
  font-weight:800;
  line-height:1.2;
  margin-bottom:20px;
  background:linear-gradient(135deg,#fff,var(--accent));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text
}
.hero p{
  font-size:1.2rem;
  color:rgba(255,255,255,0.8);
  margin-bottom:30px;
  max-width:600px
}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{
  display:flex;
  gap:40px;
  margin-top:50px;
  flex-wrap:wrap
}
.hero-stat{text-align:center}
.hero-stat .num{font-size:2.5rem;font-weight:800;color:#fff}
.hero-stat .label{color:rgba(255,255,255,0.6);font-size:.9rem}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 32px;
  border-radius:50px;
  font-weight:600;
  font-size:1rem;
  border:none;
  cursor:pointer;
  transition:all .3s
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 4px 20px rgba(233,69,96,0.4)
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 30px rgba(233,69,96,0.5)
}
.btn-outline{
  background:transparent;
  border:2px solid rgba(255,255,255,0.3);
  color:#fff
}
.btn-outline:hover{
  background:rgba(255,255,255,0.1);
  border-color:var(--accent)
}

/* ===== Section Common ===== */
.section{padding:80px 0}
.section-title{
  font-size:2.2rem;
  font-weight:700;
  margin-bottom:16px;
  text-align:center
}
.section-sub{
  text-align:center;
  color:var(--text);
  opacity:.7;
  max-width:700px;
  margin:0 auto 50px
}

/* ===== Grid Layouts ===== */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* ===== Card ===== */
.card{
  background:var(--card-bg);
  border-radius:var(--radius);
  padding:30px;
  box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s
}
.card:hover{
  transform:translateY(-5px);
  box-shadow:0 12px 40px rgba(0,0,0,0.15)
}
.card-icon{
  margin-bottom:16px;
  width:60px;height:60px
}
.card h3{font-size:1.3rem;margin-bottom:12px}
.card p{opacity:.8;font-size:.95rem}

/* ===== Banner Slider ===== */
.banner-slider{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  height:400px;
  background:var(--primary)
}
.banner-slide{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  transition:opacity .8s;
  padding:40px;
  text-align:center;
  color:#fff
}
.banner-slide.active{opacity:1}
.banner-slide h2{font-size:2.5rem;margin-bottom:16px}
.banner-slide p{font-size:1.1rem;max-width:600px;opacity:.9}
.banner-dots{
  position:absolute;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  gap:12px
}
.banner-dot{
  width:12px;height:12px;
  border-radius:50%;
  background:rgba(255,255,255,0.3);
  cursor:pointer;
  transition:.3s
}
.banner-dot.active{
  background:var(--accent);
  transform:scale(1.2)
}

/* ===== FAQ ===== */
.faq-item{border-bottom:1px solid rgba(255,255,255,0.1);padding:20px 0}
.faq-question{
  display:flex;
  justify-content:space-between;
  align-items:center;
  cursor:pointer;
  font-weight:600;
  font-size:1.1rem
}
.faq-question::after{
  content:'+';
  font-size:1.5rem;
  transition:transform .3s
}
.faq-item.open .faq-question::after{transform:rotate(45deg)}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
  padding-top:0
}
.faq-item.open .faq-answer{
  max-height:300px;
  padding-top:16px
}

/* ===== Timeline ===== */
.timeline{position:relative;padding-left:40px}
.timeline::before{
  content:'';
  position:absolute;
  left:16px;top:0;bottom:0;
  width:2px;
  background:var(--accent);
  opacity:.3
}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-item::before{
  content:'';
  position:absolute;
  left:-24px;top:8px;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--accent);
  border:3px solid var(--bg)
}
.timeline-item h4{font-size:1.1rem;margin-bottom:6px}
.timeline-item .date{font-size:.85rem;opacity:.6;margin-bottom:8px}

/* ===== HowTo Steps ===== */
.howto-steps{counter-reset:step}
.howto-step{
  padding:20px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
  display:flex;
  gap:20px
}
.howto-step::before{
  counter-increment:step;
  content:counter(step);
  min-width:40px;height:40px;
  border-radius:50%;
  background:var(--accent);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  flex-shrink:0
}

/* ===== Article Card ===== */
.article-card img{
  border-radius:var(--radius-sm);
  margin-bottom:16px;
  width:100%;
  height:200px;
  object-fit:cover
}
.article-card .date{font-size:.85rem;opacity:.6;margin-bottom:8px}
.article-card h3{font-size:1.1rem;margin-bottom:10px}
.article-card p{font-size:.9rem;opacity:.8;margin-bottom:12px}
.article-card .read-more{color:var(--accent);font-weight:600;font-size:.9rem}

/* ===== Team Grid ===== */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px}
.team-card{text-align:center}
.team-card img{
  width:120px;height:120px;
  border-radius:50%;
  margin:0 auto 16px;
  object-fit:cover
}
.team-card h4{font-size:1.1rem;margin-bottom:4px}
.team-card .role{font-size:.85rem;opacity:.6;margin-bottom:8px}

/* ===== Partner Grid ===== */
.partner-grid{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:30px;
  align-items:center
}
.partner-grid img{height:40px;opacity:.5;transition:.3s}
.partner-grid img:hover{opacity:1}

/* ===== Testimonial Card ===== */
.testimonial-card{text-align:center;padding:40px 20px}
.testimonial-card .quote{
  font-style:italic;
  font-size:1.1rem;
  margin-bottom:20px;
  opacity:.9
}
.testimonial-card .author{font-weight:600}
.testimonial-card .company{font-size:.85rem;opacity:.6}

/* ===== Footer ===== */
.footer{
  background:var(--primary);
  color:rgba(255,255,255,0.7);
  padding:60px 0 30px
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:40px;
  margin-bottom:40px
}
.footer h4{color:#fff;margin-bottom:20px;font-size:1.1rem}
.footer ul{list-style:none}
.footer li{margin-bottom:10px}
.footer a{color:rgba(255,255,255,0.6);transition:.3s}
.footer a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding-top:30px;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:20px;
  font-size:.9rem
}

/* ===== Back to Top ===== */
.back-to-top{
  position:fixed;
  bottom:30px;right:30px;
  width:50px;height:50px;
  border-radius:50%;
  background:var(--accent);
  color:#fff;
  border:none;
  cursor:pointer;
  font-size:1.5rem;
  box-shadow:0 4px 20px rgba(233,69,96,0.4);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:999;
  transition:.3s
}
.back-to-top.visible{display:flex}
.back-to-top:hover{transform:translateY(-3px)}

/* ===== Scroll Animation ===== */
.scroll-animate{
  opacity:0;
  transform:translateY(30px);
  transition:opacity .6s ease,transform .6s ease
}
.scroll-animate.visible{
  opacity:1;
  transform:translateY(0)
}

/* ===== Responsive: Tablet (max-width:992px) ===== */
@media(max-width:992px){
  .grid-2,.grid-4{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}

/* ===== Responsive: Mobile (max-width:768px) ===== */
@media(max-width:768px){
  .hero h1{font-size:2.5rem}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .header-inner nav{display:none}
  .menu-toggle{display:flex}
  .hero-stats{gap:20px}
  .hero-stat .num{font-size:2rem}
  .section-title{font-size:1.8rem}
  .banner-slider{height:300px}
  .banner-slide h2{font-size:1.8rem}
  .footer-grid{grid-template-columns:1fr}
}

/* ===== Responsive: Small Mobile (max-width:480px) ===== */
@media(max-width:480px){
  .hero h1{font-size:2rem}
  .hero p{font-size:1rem}
  .btn{padding:12px 24px;font-size:.9rem}
}