:root{

--bg-primary:#0f172a;
--bg-secondary:#1e293b;
--border:#334155;

--text-primary:#ffffff;
--text-secondary:#94a3b8;

--accent:#2563eb;

--font-system:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;

--text-sm:14px;
--text-md:16px;
--text-lg:20px;
--text-xl:32px;
--text-hero:56px;

--space-1:8px;
--space-2:12px;
--space-3:16px;
--space-4:24px;
--space-5:40px;
--space-6:60px;

--radius-md:12px;
--radius-lg:16px;

--container-width:1200px;
}

/* BASE */


#registration .field{
margin-bottom:16px;
position:relative;
z-index:1;
}

#registration input,
#registration select{
width:100%;
padding:14px;
border-radius:10px;
border:1px solid #334155;
background:#1e293b;
color:white;
font-size:14px;
outline:none;
box-sizing:border-box;
}

#registration input:focus{
border:1px solid #2563eb;
}













body{
margin:0;
background:var(--bg-primary);
color:var(--text-primary);
font-family:var(--font-system);
line-height:1.6;
padding-top:60px;
}

/* CONTAINER */

.container{
max-width:var(--container-width);
margin:auto;
padding:0 var(--space-4);
}

/* SECTIONS */

.section{
padding:60px 0;
}

.section:first-of-type{padding-top:40px;}
.section:last-of-type{padding-bottom:40px;}

.section-title{
font-size:var(--text-lg);
color:var(--text-secondary);
margin-bottom:var(--space-4);
}

/* GRID */

.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
gap:20px;
}

/* CARDS */

.card{
background:var(--bg-secondary);
border:1px solid var(--border);
padding:26px;
border-radius:var(--radius-lg);
color:white;
transition:.25s;
}

.card:hover{
transform:translateY(-6px);
background:#334155;
}

/* HERO */

.hero{
text-align:center;
padding:120px 20px 60px;
}

.hero h1{
font-size:var(--text-hero);
margin-bottom:12px;
}

.hero p{color:var(--text-secondary);}

/* LOGO */

.logo{
width:140px;
margin:auto;
margin-bottom:20px;
filter:drop-shadow(0 10px 25px rgba(0,0,0,.6));
}

/* =========================
   NAV (DESKTOP)
========================= */

.nav{
position:fixed;
top:0;
width:100%;
background:rgba(15,23,42,.85);
backdrop-filter:blur(10px);
border-bottom:1px solid var(--border);
z-index:100;
}

.nav-inner{
max-width:1200px;
margin:auto;
padding:14px 20px;
display:flex;
justify-content:space-between;
align-items:center;
}

.brand{
font-weight:700;
}

.nav-links{
display:flex;
gap:20px;
}

.nav-links a{
color:var(--text-secondary);
text-decoration:none;
font-size:14px;
}

.nav-links a:hover{
color:white;
}

/* =========================
   HAMBURGER
========================= */

.nav-toggle{
display:none;
flex-direction:column;
gap:5px;
cursor:pointer;
}

.nav-toggle span{
width:24px;
height:2px;
background:#ffffff;
border-radius:2px;
}

/* =========================
   FOOTER
========================= */

.footer{
text-align:center;
padding:60px 20px;
color:#64748b;
font-size:13px;
}

/* =========================
   MOBILE
========================= */

@media (max-width:768px){

/* NAV STRUCTURE */
.nav-inner{
justify-content:space-between;
}

/* SHOW HAMBURGER */
.nav-toggle{
display:flex;
}

/* MOBILE MENU */
.nav-links{
position:absolute;
top:60px;
left:0;
width:100%;

background:rgba(2,6,23,0.95);
backdrop-filter:blur(12px);

flex-direction:column;

transform:translateY(-10px);
opacity:0;
pointer-events:none;

transition:all 0.25s ease;

border-bottom:1px solid #1e293b;
}

/* ACTIVE STATE */
.nav-links.active{
transform:translateY(0);
opacity:1;
pointer-events:auto;
}

/* LINKS */
.nav-links a{
padding:16px 20px;
border-bottom:1px solid rgba(255,255,255,0.05);
font-size:15px;
}

/* TOUCH FEEDBACK */
.nav-links a:hover{
background:rgba(37,99,235,0.15);
color:white;
}

/* HERO */
.hero{
padding:100px 16px 50px;
}

.hero h1{
font-size:34px;
line-height:1.25;
}

.hero p{
font-size:14px;
}

/* LOGO */
.logo{
width:110px;
}

/* GRID */
.grid{
gap:16px;
}

}