:root{
--navy: #0F1C2E;
--navy-2: #0B1F3A;
--yellow: #FFD600;
--bg: #07121F;
--card: rgba(255,255,255,0.06);
--line: rgba(255,255,255,0.12);
--text: rgba(255,255,255,0.92);
--muted: rgba(255,255,255,0.68);
--shadow: 0 12px 30px rgba(0,0,0,0.35);
--radius: 18px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
margin:0;
font-family: Pretendard, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR", sans-serif;
color: var(--text);
background:
    radial-gradient(1200px 500px at 20% 0%, rgba(255,214,0,0.08), transparent 55%),
    radial-gradient(900px 500px at 80% 10%, rgba(15,28,46,0.9), transparent 60%),
    linear-gradient(180deg, var(--bg), #040a12 70%);
}

a{ color: inherit; text-decoration:none; }
a:hover{ opacity:0.9; }
b{ font-weight:700; }

.container{
width: min(1100px, 92%);
margin: 0 auto;
}

.header{
position: sticky;
top: 0;
z-index: 10;
backdrop-filter: blur(10px);
background: rgba(7,18,31,0.6);
border-bottom: 1px solid var(--line);
}
.header__inner{
display:flex;
align-items:center;
justify-content:space-between;
padding: 14px 0;
}
.logo{
font-weight:800;
letter-spacing:1px;
}
.nav{
display:flex;
align-items:center;
gap:12px;
}
.nav__toggle{
display:none;
background: transparent;
border: 1px solid var(--line);
color: var(--text);
padding: 10px 12px;
border-radius: 12px;
cursor:pointer;
}
.nav__list{
display:flex;
align-items:center;
gap:18px;
list-style:none;
margin:0;
padding:0;
}
.nav__cta{
padding: 10px 14px;
border-radius: 999px;
background: rgba(255,214,0,0.14);
border: 1px solid rgba(255,214,0,0.25);
}

.hero{
padding: 72px 0 46px;
}
.hero__inner{
display:grid;
grid-template-columns: 1.15fr 0.85fr;
gap: 26px;
align-items:center;
}
.badge{
display:inline-block;
padding: 6px 10px;
border-radius: 999px;
border: 1px solid rgba(255,214,0,0.35);
background: rgba(255,214,0,0.12);
color: var(--yellow);
font-weight:700;
font-size: 13px;
}
h1{
margin: 14px 0 12px;
font-size: clamp(30px, 4vw, 46px);
line-height: 1.1;
}
.highlight{
background: linear-gradient(90deg, var(--yellow), rgba(255,214,0,0.6));
-webkit-background-clip:text;
background-clip:text;
color: transparent;
}
.sub{
margin: 0 0 18px;
color: var(--muted);
line-height: 1.6;
}
.hero__actions{
display:flex;
gap:12px;
margin-bottom: 16px;
}
.hero__meta{
list-style:none;
padding:0;
margin:0;
display:flex;
gap:14px;
flex-wrap:wrap;
color: var(--muted);
font-size: 14px;
}

.hero__card{
border-radius: var(--radius);
background: rgba(255,255,255,0.04);
border: 1px solid var(--line);
box-shadow: var(--shadow);
overflow:hidden;
}
.hero__cardTop{
display:flex;
gap:8px;
padding: 12px 14px;
border-bottom: 1px solid var(--line);
background: rgba(255,255,255,0.03);
}
.dot{
width:10px; height:10px;
border-radius:50%;
background: rgba(255,255,255,0.25);
}
.hero__cardBody{
padding: 16px 16px 18px;
}
.mono{
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
font-size: 13px;
color: rgba(255,255,255,0.78);
margin: 8px 0;
}
.mono.success{ color: rgba(120, 255, 190, 0.9); }
.mono.accent{ color: rgba(255,214,0,0.95); }

.section{
padding: 54px 0;
}
.section__head{
margin-bottom: 18px;
}
.section__head h2{
margin:0 0 8px;
font-size: 26px;
}
.section__head p{
margin:0;
color: var(--muted);
}

.grid{
display:grid;
gap:16px;
}
.grid--2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card{
background: var(--card);
border: 1px solid var(--line);
border-radius: var(--radius);
padding: 18px;
box-shadow: 0 10px 20px rgba(0,0,0,0.18);
}
.card h3{
margin:0 0 10px;
font-size: 18px;
}
.muted{ color: var(--muted); }
.tiny{ font-size: 12px; }

.list{
margin:0;
padding-left: 18px;
color: var(--muted);
line-height: 1.7;
}
.chips{
display:flex;
flex-wrap:wrap;
gap:10px;
}
.chip{
padding: 8px 12px;
border-radius: 999px;
border: 1px solid rgba(255,214,0,0.25);
background: rgba(255,214,0,0.10);
color: rgba(255,255,255,0.88);
font-size: 13px;
}
.note{
margin-top: 14px;
padding: 12px 12px;
border-radius: 14px;
border: 1px dashed rgba(255,214,0,0.35);
background: rgba(255,214,0,0.07);
}

.btn{
display:inline-flex;
align-items:center;
justify-content:center;
gap:8px;
padding: 12px 14px;
border-radius: 14px;
border: 1px solid var(--line);
cursor:pointer;
font-weight:700;
}
.btn--primary{
background: var(--yellow);
color: #09101B;
border-color: rgba(255,214,0,0.6);
}
.btn--ghost{
background: rgba(255,255,255,0.04);
color: var(--text);
}
.btn[aria-disabled="true"]{
opacity: 0.55;
pointer-events: none;
}

.project__top{
display:flex;
align-items:center;
justify-content:space-between;
gap:10px;
margin-bottom: 6px;
}

.tag{
font-size: 12px;
padding: 6px 10px;
border-radius: 999px;
border: 1px solid var(--line);
color: var(--muted);
}
.tag--progress{
border-color: rgba(255,214,0,0.35);
background: rgba(255,214,0,0.10);
color: rgba(255,214,0,0.95);
}

.project__actions{
display:flex;
gap:10px;
margin-top: 14px;
}

.timeline{
display:flex;
flex-direction:column;
gap: 12px;
}
.time{
display:grid;
grid-template-columns: 100px 1fr;
gap: 14px;
padding: 16px;
border-radius: var(--radius);
border: 1px solid var(--line);
background: rgba(255,255,255,0.035);
}
.time__date{
color: rgba(255,214,0,0.95);
font-weight: 800;
}
.time__body h3{
margin:0 0 6px;
}

.form{
display:flex;
flex-direction:column;
gap: 12px;
}
label span{
display:block;
font-size: 13px;
color: var(--muted);
margin-bottom: 6px;
}
input, textarea{
width: 100%;
padding: 12px 12px;
border-radius: 14px;
border: 1px solid var(--line);
background: rgba(0,0,0,0.18);
color: var(--text);
outline: none;
}
input:focus, textarea:focus{
border-color: rgba(255,214,0,0.45);
box-shadow: 0 0 0 4px rgba(255,214,0,0.10);
}

.footer{
border-top: 1px solid var(--line);
padding: 18px 0;
background: rgba(7,18,31,0.55);
}
.footer__inner{
display:flex;
justify-content:space-between;
align-items:center;
}
.toTop{
color: rgba(255,214,0,0.95);
}

/* Responsive */
@media (max-width: 880px){
.hero__inner{ grid-template-columns: 1fr; }
.grid--3{ grid-template-columns: 1fr; }
.grid--2{ grid-template-columns: 1fr; }
.time{ grid-template-columns: 1fr; }
.nav__toggle{ display:inline-flex; }
.nav__list{
    display:none;
    position:absolute;
    right: 4%;
    top: 58px;
    flex-direction:column;
    gap:12px;
    padding: 14px;
    width: min(260px, 92vw);
    border-radius: 16px;
    border: 1px solid var(--line);
    background: rgba(7,18,31,0.92);
    box-shadow: var(--shadow);
}
.nav__list.is-open{ display:flex; }
}
/* ===== Interactive: Scroll Progress + Reveal ===== */

/* Top progress bar */
.progress{
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 3px;
background: rgba(255,255,255,0.10);
z-index: 999;
}
.progress__bar{
height: 100%;
width: 0%;
background: linear-gradient(90deg, rgba(255,214,0,0.95), rgba(255,214,0,0.55));
box-shadow: 0 0 14px rgba(255,214,0,0.35);
}

/* Reveal animation */
.reveal{
opacity: 0;
transform: translateY(18px);
transition: opacity 650ms ease, transform 650ms ease;
will-change: opacity, transform;
}
.reveal.is-visible{
opacity: 1;
transform: translateY(0);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
.reveal{ transition: none; transform: none; opacity: 1; }
.progress__bar{ transition: none; }
}
/* ===== Starfield Background ===== */
#starfield{
position: fixed;
inset: 0;
width: 100%;
height: 100%;
z-index: 0;          
pointer-events: none;
opacity: 0.6;   
}

/* Content layer */
#app{
position: relative;
z-index: 1;          
}

/*project _links*/
.project__links{
  margin-top:16px;
  display:flex;
  gap:10px;
}