/* =================== VARIABLES =================== */
:root {
  --primary:#2563eb;
  --primary-light:#3b82f6;
  --accent:#38bdf8;

  --bg:#0b121f;
  --bg-soft:#0f172a;
  --card-bg:rgba(15,23,42,0.9);

  --text:#f8fafc;
  --text-muted:#94a3b8;

  --radius:16px;
  --radius-sm:10px;

  --shadow:0 20px 60px rgba(0,0,0,0.6);
  --shadow-soft:0 10px 30px rgba(0,0,0,0.4);

  --transition:0.3s ease;

  --container:1200px;
}

/* =================== RESET =================== */
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  font-family:'Inter',sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
}

a{
  text-decoration:none;
  color:inherit;
  transition:var(--transition);
}

img{
  max-width:100%;
  display:block;
}

/* =================== CONTAINER =================== */
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  width:100%;
}

/* =================== HEADER =================== */
header{
  display:flex;
  justify-content:space-between;
  align-items:center;

  padding:15px 40px;
  position:sticky;
  top:0;
  z-index:1000;

  background:rgba(11,18,32,0.85);
  backdrop-filter:blur(12px);

  border-bottom:1px solid rgba(255,255,255,0.05);
}

/* BRAND */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:600;
}

.brand__logo{
  width:48px;
  height:48px;
  border-radius:12px;
  overflow:hidden;
  display:grid;
  place-items:center;
  background:rgba(255,255,255,0.05);
}

.brand__logo img{
  width:40px;
}

/* NAV */
.nav-links{
  display:flex;
  gap:18px;
}

.nav-links a{
  padding:8px 12px;
  border-radius:8px;
  font-size:0.95rem;
}

.nav-links a:hover{
  background:rgba(255,255,255,0.08);
}

/* AUTH */
.auth-buttons{
  display:flex;
  gap:10px;
}

/* =================== BUTTONS =================== */
.btn{
  padding:11px 20px;
  border-radius:10px;
  font-weight:600;
  font-size:0.9rem;
  display:inline-block;
  transition:all var(--transition);
}

.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 5px 15px rgba(37,99,235,0.4);
}

.btn-primary:hover{
  transform:translateY(-2px);
  background:var(--primary-light);
}

.btn-ghost{
  border:1.5px solid rgba(255,255,255,0.2);
}

.btn-ghost:hover{
  background:rgba(255,255,255,0.08);
}

/* =================== HERO =================== */
.hero{
  text-align:center;
  padding:120px 20px 90px;

  background:
    linear-gradient(180deg, rgba(11,18,32,0.95), rgba(11,18,32,0.9)),
    url('https://images.unsplash.com/photo-1518770660439-4636190af475?q=80&w=2000&auto=format&fit=crop') center/cover no-repeat;

  position:relative;
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 30% 40%, rgba(37,99,235,0.15), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(56,189,248,0.12), transparent 60%);
  animation:move 40s linear infinite;
}

@keyframes move{
  0%{transform:translate(0,0);}
  50%{transform:translate(20px,-20px);}
  100%{transform:translate(0,0);}
}

.hero h1{
  font-size:3rem;
  margin-bottom:20px;
  position:relative;
}

.hero p{
  max-width:680px;
  margin:0 auto 30px;
  color:var(--text-muted);
  position:relative;
}

.hero-buttons{
  display:flex;
  justify-content:center;
  gap:15px;
  flex-wrap:wrap;
}

/* =================== SECTION =================== */
.section{
  padding:90px 20px;
}

.section .container{
  text-align:center;
}

.section h2{
  font-size:2.2rem;
  margin-bottom:10px;
}

.lead{
  color:var(--text-muted);
  margin-bottom:50px;
}

/* =================== GRID =================== */
.grid{
  display:grid;
  gap:25px;
}

.grid-3{
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}

.grid-2{
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}

/* =================== CARD =================== */
.card{
  background:var(--card-bg);
  padding:28px;
  border-radius:var(--radius);

  box-shadow:var(--shadow-soft);

  text-align:left;

  transition:all var(--transition);

  /* ✅ FIX IMPORTANT */
  opacity:1;
  transform:none;
}

.card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow);
}

.card h3{
  margin-bottom:10px;
}

.card p{
  color:var(--text-muted);
}

/* =================== CTA =================== */
.cta{
  background:rgba(37,57,105,0.15);
  text-align:center;
  padding:80px 20px;
}

.cta p{
  max-width:600px;
  margin:15px auto 25px;
  color:var(--text-muted);
}

/* =================== FOOTER =================== */
footer{
  background:rgba(11,18,32,0.95);
  padding:70px 20px;
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:40px;
}

/* =================== RESPONSIVE =================== */
@media(max-width:900px){

  header{
    flex-direction:column;
    gap:20px;
    padding:20px;
  }

  .nav-links{
    flex-wrap:wrap;
    justify-content:center;
  }

  .auth-buttons{
    justify-content:center;
  }
}

@media(max-width:768px){

  .hero h1{
    font-size:2.2rem;
  }

  .hero p{
    font-size:1rem;
  }

  .section{
    padding:70px 20px;
  }
}