/* ========== Base ========== */
:root{
  --bg: #0b0f19;
  --bg-soft: #0f1629;
  --card: rgba(255,255,255,0.06);
  --card-border: rgba(255,255,255,0.10);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --muted2: rgba(255,255,255,0.55);
  --accent: #7c3aed;
  --accent2: #22c55e;
  --shadow: 0 18px 50px rgba(0,0,0,0.35);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1100px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 15% -10%, rgba(124,58,237,0.35), transparent 60%),
              radial-gradient(900px 500px at 90% 0%, rgba(34,197,94,0.22), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

/* ========== Topbar ========== */
.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11,15,25,0.60);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand__mark{
  display:inline-grid;
  place-items:center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(124,58,237,0.95), rgba(34,197,94,0.8));
  box-shadow: var(--shadow);
}
.brand__name{ font-size: 0.98rem; }

.nav{
  display:flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content:flex-end;
}
.nav a{
  font-size: 0.95rem;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 10px;
}
.nav a:hover{
  background: rgba(255,255,255,0.06);
  color: var(--text);
  text-decoration: none;
}

/* ========== Hero ========== */
.hero{
  padding: 54px 0 28px;
}
.hero__inner{
  display:grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 22px;
  align-items: start;
}

.eyebrow{
  display:inline-block;
  padding: 6px 10px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  border-radius: 999px;
  font-size: 0.85rem;
}

h1{
  margin: 14px 0 10px;
  font-size: clamp(2rem, 4vw, 3.1rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 65ch;
}

.hero__actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 16px 0 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}
.btn:hover{ text-decoration:none; transform: translateY(-1px); }
.btn--primary{
  background: linear-gradient(135deg, rgba(124,58,237,0.95), rgba(124,58,237,0.70));
  border-color: rgba(124,58,237,0.55);
  box-shadow: var(--shadow);
}
.btn--ghost{
  background: rgba(255,255,255,0.04);
}

.hero__meta{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.meta-card{
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 12px 12px;
}
.meta-title{
  margin: 0;
  color: var(--muted2);
  font-size: 0.85rem;
}
.meta-value{
  margin: 4px 0 0;
  font-weight: 650;
  font-size: 0.96rem;
}

/* ========== Sidebar Card ========== */
.hero__card{
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.profile{
  display:flex;
  align-items:center;
  gap: 12px;
}
.avatar{
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display:grid;
  place-items:center;
  font-weight: 800;
  background: rgba(124,58,237,0.25);
  border: 1px solid rgba(124,58,237,0.35);
}
.profile__name{
  margin: 0;
  font-weight: 800;
}
.profile__role{
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.divider{
  height: 1px;
  background: rgba(255,255,255,0.08);
  margin: 14px 0;
}

.quick-links{
  list-style: none;
  padding: 0;
  margin: 0;
  display:grid;
  gap: 10px;
}
.quick-links li{
  display:flex;
  justify-content: space-between;
  gap: 10px;
}
.label{
  color: var(--muted2);
  font-size: 0.9rem;
}
.note{
  margin: 14px 0 0;
  color: var(--muted2);
  font-size: 0.9rem;
}
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
  font-size: 0.92em;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.06);
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
}

/* ========== Sections ========== */
.section{
  padding: 44px 0;
}
.section--alt{
  background: rgba(255,255,255,0.02);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.section__header{
  margin-bottom: 16px;
}
.section__header h2{
  margin: 0 0 6px;
  font-size: 1.55rem;
  letter-spacing: -0.01em;
}
.section__header p{
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

/* ========== Cards & Layout ========== */
.card{
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 18px;
}

.cards{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.grid-2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

h3{
  margin: 0 0 8px;
  font-size: 1.08rem;
}
.muted{ color: var(--muted); }

.bullets{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.bullets li{ margin: 6px 0; }

.card__top{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.tag{
  font-size: 0.82rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(34,197,94,0.40);
  background: rgba(34,197,94,0.14);
  color: rgba(255,255,255,0.88);
}
.tag--pending{
  border-color: rgba(124,58,237,0.42);
  background: rgba(124,58,237,0.14);
}

.card__links{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}
.link{
  color: rgba(255,255,255,0.90);
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
}
.link:hover{
  text-decoration: none;
  transform: translateY(-1px);
  background: rgba(255,255,255,0.06);
}

.hint{
  margin-top: 14px;
  color: var(--muted2);
}

/* ========== Final Project Extras ========== */
.callout{
  margin-top: 12px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(124,58,237,0.10);
  border: 1px solid rgba(124,58,237,0.22);
}
.callout p{ margin: 6px 0; }

.link-list{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.link-list li{ margin: 8px 0; }

.timeline{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.timeline li{ margin: 10px 0; }
.timeline__title{
  display:block;
  font-weight: 750;
  color: rgba(255,255,255,0.90);
}
.timeline__desc{
  display:block;
  margin-top: 2px;
}

/* ========== Footer ========== */
.footer{
  padding: 26px 0 34px;
}
.footer__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted2);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 18px;
}
.backtotop{
  color: rgba(255,255,255,0.78);
  font-weight: 650;
}

/* ========== Responsive ========== */
@media (max-width: 980px){
  .hero__inner{ grid-template-columns: 1fr; }
  .hero__meta{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .footer__inner{ flex-direction: column; align-items:flex-start; }
}