/* =========================================================
   TEAM SRISHTI — token system
   ink      #0a0e13  base background
   panel    #121a24  card surfaces
   line     rgba(255,255,255,.08)
   paper    #eef2f6  primary text
   muted    #8fa0b3  secondary text
   signal   #33e6c0  teal accent (telemetry / structure)
   flare    #ff6a3d  warm accent (used sparingly)
   ========================================================= */

:root{
  --ink:#0a0e13;
  --ink-2:#0d131b;
  --panel:#121a24;
  --panel-2:#0f151e;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.16);
  --paper:#eef2f6;
  --muted:#8fa0b3;
  --signal:#33e6c0;
  --signal-dim: rgba(51,230,192,.14);
  --flare:#ff6a3d;
  --flare-dim: rgba(255,106,61,.14);

  --display: 'Syne', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;

  --nav-h: 76px;
}

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

html{ scroll-behavior:smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--body);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
::selection{ background:var(--signal); color:var(--ink); }

::-webkit-scrollbar{ width:8px; }
::-webkit-scrollbar-track{ background:var(--ink); }
::-webkit-scrollbar-thumb{ background:var(--line-strong); border-radius:4px; }

:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}

/* ---------- decorative grain + scan line ---------- */
.grain{
  position:fixed; inset:0; z-index:2; pointer-events:none; opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:220px 220px;
}
.scan-line{
  position:fixed; left:0; right:0; height:1px; z-index:3; pointer-events:none;
  background:linear-gradient(90deg, transparent, var(--signal), transparent);
  opacity:.5;
  animation:scan 7s linear infinite;
}
@keyframes scan{ 0%{ top:0; } 100%{ top:100%; } }

/* ================= NAV ================= */
.site-nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  height:var(--nav-h);
  background:rgba(10,14,19,.7);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease, background .3s ease;
}
.site-nav.scrolled{
  border-bottom-color:var(--line);
  background:rgba(10,14,19,.92);
}
.nav-inner{
  max-width:1280px; margin:0 auto; height:100%;
  padding:0 28px;
  display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand-mark{ color:var(--signal); display:flex; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text strong{
  font-family:var(--display); font-weight:700; font-size:.85rem; letter-spacing:.06em;
}
.brand-text em{
  font-style:normal; font-family:var(--mono); font-size:.6rem; color:var(--muted); letter-spacing:.18em;
}

.nav-links{ display:flex; align-items:center; gap:6px; }
.nav-links a{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--muted); padding:9px 14px; border-radius:6px; transition:color .25s ease, background .25s ease;
}
.nav-links a:hover{ color:var(--paper); background:rgba(255,255,255,.04); }
.nav-links a.active{ color:var(--signal); }
.nav-cta{
  border:1px solid var(--signal-dim); color:var(--signal) !important; margin-left:6px;
}
.nav-cta:hover{ background:var(--signal-dim) !important; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:none; cursor:pointer;
}
.nav-toggle span{ height:2px; width:100%; background:var(--paper); border-radius:2px; transition:.3s ease; }

/* ================= HERO ================= */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  padding:calc(var(--nav-h) + 40px) 24px 0;
  overflow:hidden;
}
.hero-grid{
  position:absolute; inset:0; z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 35%, black 40%, transparent 85%);
}
.hero-glow{
  position:absolute; z-index:0; top:-10%; left:50%; transform:translateX(-50%);
  width:900px; height:900px; border-radius:50%;
  background:radial-gradient(circle, var(--signal-dim) 0%, transparent 65%);
  filter:blur(10px);
}
.hero-inner{
  position:relative; z-index:2; max-width:820px; text-align:center;
}
.eyebrow{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.22em; color:var(--signal);
  text-transform:uppercase; margin-bottom:22px;
}
.hero-title{
  font-family:var(--display); font-weight:800; letter-spacing:-.01em;
  font-size:clamp(2.6rem, 8vw, 5.4rem); line-height:.98; text-transform:uppercase;
}
.hero-title .line{ display:block; }
.hero-title .accent{ color:var(--signal); }
.hero-sub{
  margin:26px auto 0; max-width:560px; color:var(--muted); font-size:1.05rem;
}
.hero-sub a{ color:var(--paper); border-bottom:1px solid var(--signal); }
.hero-sub a:hover{ color:var(--signal); }

.hero-cta{ display:flex; gap:14px; justify-content:center; margin-top:38px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:.78rem; letter-spacing:.06em; text-transform:uppercase;
  padding:14px 26px; border-radius:8px; transition:all .25s ease;
}
.btn-primary{ background:var(--signal); color:var(--ink); font-weight:600; }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 12px 30px var(--signal-dim); }
.btn-ghost{ border:1px solid var(--line-strong); color:var(--paper); }
.btn-ghost:hover{ border-color:var(--signal); color:var(--signal); }

/* ---------- telemetry strip (signature element) ---------- */
.telemetry{
  position:relative; z-index:2;
  margin-top:64px; width:100%; max-width:1120px;
  display:flex; align-items:center; justify-content:center; flex-wrap:wrap;
  gap:0; padding:20px 28px;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.telemetry-item{
  display:flex; flex-direction:column; align-items:center; gap:4px;
  padding:6px 26px;
}
.telemetry-label{
  font-family:var(--mono); font-size:.6rem; letter-spacing:.14em; color:var(--muted); text-transform:uppercase;
}
.telemetry-value{
  font-family:var(--mono); font-size:1.3rem; font-weight:600; color:var(--paper);
}
.telemetry-sep{ width:1px; height:26px; background:var(--line); }
.telemetry-live{ flex-direction:row; gap:8px; }
.telemetry-dot{
  width:8px; height:8px; border-radius:50%; background:var(--signal);
  box-shadow:0 0 0 0 var(--signal-dim);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(51,230,192,.5); }
  70%{ box-shadow:0 0 0 8px rgba(51,230,192,0); }
  100%{ box-shadow:0 0 0 0 rgba(51,230,192,0); }
}

/* ================= TICKER ================= */
.ticker{
  position:relative; overflow:hidden; white-space:nowrap;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:var(--panel-2); padding:14px 0;
}
.ticker-track{
  display:inline-flex; gap:48px; animation:ticker 32s linear infinite;
}
.ticker-track span{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.14em; color:var(--muted);
  text-transform:uppercase;
}
@keyframes ticker{ 0%{ transform:translateX(0); } 100%{ transform:translateX(-50%); } }

/* ================= SECTIONS ================= */
.section{ padding:120px 24px; position:relative; }
.section-alt{ background:var(--ink-2); }
.section-inner{ max-width:1120px; margin:0 auto; }

.sec-tag{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.18em; color:var(--signal);
  text-transform:uppercase; display:block; margin-bottom:18px;
}
.section-head h2{
  font-family:var(--display); font-weight:700; text-transform:uppercase;
  font-size:clamp(1.9rem, 4.2vw, 3rem); line-height:1.06; letter-spacing:-.01em;
}
.section-note{
  color:var(--muted); max-width:560px; margin-top:18px; font-size:.95rem;
}

/* ================= ABOUT ================= */
.about-grid{
  margin-top:56px; display:grid; grid-template-columns:1.1fr .9fr; gap:64px; align-items:center;
}
.about-copy .lead{ font-size:1.15rem; color:var(--paper); }
.about-copy p{ margin-top:18px; color:var(--muted); }
.about-stats{
  display:flex; gap:36px; margin-top:38px; flex-wrap:wrap;
}
.about-stat .num{
  display:block; font-family:var(--display); font-weight:700; font-size:1.5rem; color:var(--signal);
}
.about-stat .lbl{
  display:block; font-family:var(--mono); font-size:.68rem; color:var(--muted); letter-spacing:.06em; margin-top:4px;
}

.about-visual{ display:flex; align-items:center; justify-content:center; }
.rover-glyph{ width:100%; max-width:340px; }
.ring{ fill:none; stroke:var(--line-strong); stroke-width:1; }
.ring-2{ stroke:var(--line); stroke-dasharray:4 6; }
.ring-3{ stroke:var(--signal-dim); }
.orbit-dot{ fill:var(--signal); }
.orbit-dot-group{ transform-origin:200px 200px; animation:orbit 9s linear infinite; }
@keyframes orbit{ to{ transform:rotate(360deg); } }
.rover-body{ fill:var(--panel); stroke:var(--signal); stroke-width:1.4; }
.rover-wheel{ fill:var(--ink); stroke:var(--paper); stroke-width:1.2; }
.rover-mast{ stroke:var(--signal); stroke-width:1.4; }
.rover-cam{ fill:var(--flare); }

/* ================= COMPETITIONS ================= */
.comp-grid{
  margin-top:56px; display:grid; grid-template-columns:repeat(3, 1fr); gap:22px;
}
.comp-card{
  background:var(--panel); border:1px solid var(--line); border-radius:14px;
  padding:32px 28px; position:relative; transition:transform .3s ease, border-color .3s ease;
}
.comp-card:hover{ transform:translateY(-4px); border-color:var(--line-strong); }
.comp-code{
  font-family:var(--mono); font-size:.75rem; letter-spacing:.14em; color:var(--muted);
}
.comp-card h3{
  font-family:var(--display); font-size:1.35rem; margin:14px 0 10px; text-transform:uppercase;
}
.comp-card p{ color:var(--muted); font-size:.92rem; }
.comp-tag{
  display:inline-block; margin-top:20px; font-family:var(--mono); font-size:.62rem;
  letter-spacing:.12em; color:var(--muted); border:1px solid var(--line-strong);
  padding:5px 10px; border-radius:100px;
}
.comp-card-featured{
  background:linear-gradient(160deg, var(--panel), rgba(255,106,61,.05));
  border-color:var(--flare-dim);
}
.comp-card-featured .comp-code{ color:var(--flare); }
.comp-tag-host{ color:var(--flare); border-color:var(--flare-dim); }
.comp-link{
  display:inline-flex; align-items:center; gap:6px; margin-top:16px;
  font-family:var(--mono); font-size:.78rem; color:var(--flare); border-bottom:1px solid var(--flare-dim);
  padding-bottom:2px;
}
.comp-link:hover{ border-color:var(--flare); }

/* ================= PROGRAM (rover generations) ================= */
.program-track{ position:relative; margin-top:60px; padding-left:36px; }
.program-line{
  position:absolute; left:9px; top:6px; bottom:6px; width:1px;
  background:linear-gradient(var(--signal), var(--line));
}
.program-item{ position:relative; padding-bottom:46px; }
.program-item:last-child{ padding-bottom:0; }
.program-marker{
  position:absolute; left:-36px; top:0; width:20px; height:20px; border-radius:50%;
  background:var(--ink); border:1px solid var(--signal); color:var(--signal);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:.5rem;
}
.program-body h3{
  font-family:var(--display); font-size:1.25rem; text-transform:uppercase;
}
.program-body p{ color:var(--muted); margin-top:8px; max-width:560px; font-size:.94rem; }

/* ================= TEAM / SUBTEAMS ================= */
.subteam-grid{
  margin-top:56px; display:grid; grid-template-columns:repeat(3, 1fr); gap:22px;
}
.subteam-card{
  padding:30px 26px; border:1px solid var(--line); border-radius:14px;
  background:var(--panel); transition:border-color .3s ease, transform .3s ease;
}
.subteam-card:hover{ border-color:var(--signal-dim); transform:translateY(-3px); }
.subteam-index{
  font-family:var(--mono); font-size:.9rem; color:var(--signal);
}
.subteam-card h3{
  font-family:var(--display); font-size:1.2rem; margin:12px 0 8px; text-transform:uppercase;
}
.subteam-card p{ color:var(--muted); font-size:.9rem; }
.team-note{ margin-top:40px; font-style:italic; opacity:.8; }

/* ================= ACHIEVEMENTS ================= */
.log-grid{
  margin-top:56px; display:grid; grid-template-columns:repeat(3, 1fr); gap:22px;
}
.log-card{
  padding:30px 26px; border-left:2px solid var(--signal); background:var(--panel-2);
  border-radius:0 12px 12px 0;
}
.log-year{ font-family:var(--mono); color:var(--signal); font-size:.78rem; letter-spacing:.1em; }
.log-card h3{ font-family:var(--display); font-size:1.15rem; margin:10px 0 8px; text-transform:uppercase; }
.log-card p{ color:var(--muted); font-size:.9rem; }

/* ================= PARTNERS ================= */
.partner-row{ margin-top:56px; display:flex; gap:18px; flex-wrap:wrap; }
.partner-chip{
  flex:1 1 220px; padding:26px; border:1px solid var(--line); border-radius:12px;
  display:flex; flex-direction:column; gap:6px; background:var(--panel);
}
.partner-chip strong{ font-family:var(--display); font-size:1.2rem; }
.partner-chip span{ font-family:var(--mono); font-size:.72rem; color:var(--muted); }

/* ================= CONTACT ================= */
.contact-section{ padding-bottom:80px; }
.contact-grid{
  margin-top:48px; display:grid; grid-template-columns:repeat(4, 1fr); gap:16px;
}
.contact-card{
  padding:24px; border:1px solid var(--line); border-radius:12px; background:var(--panel);
  display:flex; flex-direction:column; gap:8px; transition:border-color .25s ease, transform .25s ease;
}
.contact-card:hover{ border-color:var(--signal); transform:translateY(-3px); }
.contact-label{ font-family:var(--mono); font-size:.62rem; letter-spacing:.14em; color:var(--muted); }
.contact-value{ font-family:var(--body); font-weight:600; font-size:.92rem; word-break:break-word; }

/* ================= FOOTER ================= */
.site-footer{ border-top:1px solid var(--line); padding:36px 24px; }
.footer-inner{
  max-width:1120px; margin:0 auto; display:flex; align-items:center; justify-content:space-between;
  gap:20px; flex-wrap:wrap;
}
.footer-brand{ display:flex; align-items:center; gap:8px; color:var(--signal); font-family:var(--mono); font-size:.75rem; letter-spacing:.1em; }
.footer-copy{ color:var(--muted); font-size:.78rem; }
.footer-link{ font-family:var(--mono); font-size:.78rem; color:var(--paper); border-bottom:1px solid var(--line-strong); }
.footer-link:hover{ color:var(--signal); border-color:var(--signal); }

/* ================= SCROLL REVEAL ================= */
.reveal{
  opacity:0; transform:translateY(22px);
  transition:opacity .7s ease, transform .7s ease;
}
.reveal.in{ opacity:1; transform:translateY(0); }

/* ================= RESPONSIVE ================= */
@media (max-width: 980px){
  .nav-links{
    position:fixed; top:var(--nav-h); left:0; right:0; bottom:0;
    background:rgba(10,14,19,.98); backdrop-filter:blur(14px);
    flex-direction:column; align-items:flex-start; padding:32px 28px; gap:6px;
    transform:translateX(100%); transition:transform .35s ease;
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-links a{ font-size:.95rem; padding:14px 0; width:100%; }
  .nav-toggle{ display:flex; }

  .about-grid{ grid-template-columns:1fr; gap:40px; }
  .comp-grid, .subteam-grid, .log-grid{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:repeat(2, 1fr); }
  .telemetry{ gap:6px; }
  .telemetry-item{ padding:6px 14px; }
}

@media (max-width: 560px){
  .contact-grid{ grid-template-columns:1fr; }
  .section{ padding:88px 20px; }
}