/* ================================================================
   LEADERBOARD — LIGHT CSS  (critical path, render-blocking)
   Place at: origin/static/css/leaderboard.css
   Zero animations. Zero backdrop-filter. Zero 3D.
   Page is readable and structured before a single byte of CDN CSS
   ================================================================ */

/* ---- Variables (match design system) -------------------------- */
:root {
  --bg:       #0a0e17;
  --surf:     #111827;
  --surf2:    #1a2332;
  --surf3:    #1e2d40;
  --ink:      #e2e8f0;
  --ink2:     #fcfdff;
  --ink3:     #64748b;
  --acc:      #3b82f6;
  --accL:     #60a5fa;
  --accXL:    #93c5fd;
  --glow:     rgba(59,130,246,0.25);
  --gold:     #f59e0b;
  --goldL:    #fbbf24;
  --silver:   #94a3b8;
  --bronze:   #b45309;
  --ok:       #22c55e;
  --bad:      #ef4444;
  --warn:     #f59e0b;
  --border:   #1e293b;
  --borderL:  #334155;
  --r:        12px;
  --rL:       16px;
  --rXL:      22px;
  --max-w:    1180px;
  --nav-h:    24px;
  --font:     system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --ease:     0.3s cubic-bezier(0.4,0,0.2,1);
  --spring:   cubic-bezier(0.34,1.56,0.64,1);
  --spring-s: cubic-bezier(0.22,1,0.36,1);
}

body.light-mode {
  --bg: #f8fafc; --surf: #ffffff; --surf2: #f1f5f9; --surf3: #e8eef6;
  --ink: #0f172a; --ink2: #161a1f; --ink3: #94a3b8;
  --border: #e2e8f0; --borderL: #cbd5e1;
}

/* ---- Reset ---------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:24px;overflow-x:hidden}
body{
  font-family:var(--font);background:var(--bg);color:var(--ink);
  line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{line-height:1.2;font-weight:700}
h1{font-size:clamp(1.8rem,5vw,3rem)}
h2{font-size:clamp(1.3rem,3vw,2rem)}
p{color:var(--ink2)}

/* ---- Layout --------------------------------------------------- */
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 5vw}
main{padding-top:var(--nav-h)}

/* ---- Scroll progress ----------------------------------------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;
  width:0;background:var(--acc);z-index:10000;
}

/* ---- TOP CONTROLS: back button + theme toggle (no nav bar) --- */
.top-controls{
  position:fixed;top:14px;left:0;right:0;
  z-index:1000;pointer-events:none;
  display:flex;justify-content:space-between;align-items:center;
  padding:0 4vw;
}
.back-btn{
  pointer-events:auto;
  display:inline-flex;align-items:center;gap:0.5rem;
  padding:0.55rem 1rem 0.55rem 0.8rem;border-radius:100px;
  background:var(--surf);border:1px solid var(--border);
  color:var(--ink);font-weight:700;font-size:0.82rem;
  box-shadow:0 4px 16px rgba(0,0,0,0.25);
}
.back-btn i{font-size:0.78rem}
body.light-mode .back-btn{box-shadow:0 4px 16px rgba(0,0,0,0.08)}

.theme-toggle{
  pointer-events:auto;
  background:var(--surf);border:1px solid var(--border);
  color:var(--ink2);font-size:1rem;
  width:38px;height:38px;padding:0;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(0,0,0,0.25);
}
body.light-mode .theme-toggle{box-shadow:0 4px 16px rgba(0,0,0,0.08)}

/* ---- Reveal flash ("TOP 10 REVEALED") — base, no animation ---- */
.reveal-flash{
  position:fixed;inset:0;z-index:3000;
  display:flex;align-items:center;justify-content:center;
  pointer-events:none;opacity:0;
}
.reveal-flash-text{
  font-family:var(--font);font-weight:900;
  font-size:clamp(1.4rem,6vw,3rem);
  letter-spacing:0.06em;color:var(--ink2);
  text-align:center;padding:0 1rem;
}

/* ---- Climax countdown overlay — base, no animation ------------ */
.climax-overlay{
  position:fixed;inset:0;z-index:2500;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
}
.climax-overlay.show{opacity:1}
.climax-digit{
  font-family:var(--font);font-weight:900;
  font-size:clamp(4.5rem,24vw,11rem);
  color:var(--ink2);line-height:1;
}

/* ---- Confetti host — base, no animation ------------------------ */
.celebration-burst{
  position:fixed;inset:0;z-index:2600;
  pointer-events:none;overflow:hidden;
  opacity:0;
}
.confetti-piece{position:absolute;top:-6%}

/* ---- Outro ("this could be you") overlay — base, no animation -- */
.reveal-outro{
  position:fixed;inset:0;z-index:2400;
  display:flex;align-items:center;justify-content:center;
  padding:1.5rem;
  background:rgba(6,10,20,0.55);
  opacity:0;visibility:hidden;pointer-events:none;
}
body.light-mode .reveal-outro{background:rgba(15,23,42,0.35)}
.reveal-outro.show{opacity:1;visibility:visible;pointer-events:auto}
.outro-card{
  width:100%;max-width:360px;text-align:center;
  background:linear-gradient(145deg,var(--surf),var(--surf2));
  border:1px solid var(--border);border-radius:var(--rXL);
  padding:2rem 1.5rem;
}
.outro-eyebrow{
  display:inline-flex;align-items:center;gap:0.4rem;
  font-size:0.68rem;text-transform:uppercase;letter-spacing:0.08em;
  color:var(--accL);font-weight:700;margin-bottom:0.9rem;
}
.outro-line{
  font-family:var(--font);font-weight:800;
  font-size:clamp(1.35rem,4vw,1.8rem);
  color:var(--ink2);margin-bottom:1.4rem;line-height:1.25;
}
.outro-cta{
  display:inline-flex;align-items:center;gap:0.5rem;
  background:var(--acc);color:#fff;font-weight:700;font-size:0.82rem;
  padding:0.65rem 1.3rem;border-radius:50px;border:none;
}

/* ---- Focus overlay skeleton (atmosphere lives in advance CSS) - */
.focus-overlay{
  position:fixed;inset:0;z-index:20;
  pointer-events:none;opacity:0;
}
/* ---- Buttons ------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:0.4rem;
  padding:0.6rem 1.25rem;border-radius:var(--r);
  font-weight:600;font-size:0.82rem;border:2px solid transparent;
  white-space:nowrap;background:none;color:var(--ink);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--acc);color:#fff}
.btn-primary:hover{background:var(--accL)}
.btn-outline{border-color:var(--borderL);color:var(--ink2)}
.btn-outline:hover{border-color:var(--acc);color:var(--accL)}
.btn-sm{padding:0.4rem 0.85rem;font-size:0.76rem}
.btn-lg{padding:0.75rem 1.75rem;font-size:0.92rem;border-radius:var(--rL)}
.btn-xl{padding:0.9rem 2.2rem;font-size:1rem;border-radius:var(--rL)}
.btn-ghost{background:transparent;color:var(--ink2);border-color:transparent}
.btn-ghost:hover{color:var(--accL)}

/* Mini spinner in button */
.btn-spin{
  width:14px;height:14px;border:2px solid rgba(255,255,255,0.3);
  border-top-color:#fff;border-radius:50%;
  animation:lbSpin 0.6s linear infinite;display:none;
}
.btn.loading .btn-spin{display:inline-block}
.btn.loading .btn-txt{display:none}
@keyframes lbSpin{to{transform:rotate(360deg)}}

/* ---- Section layout ------------------------------------------ */
.lb-section{padding:3.5rem 0;border-top:1px solid var(--border)}
.lb-section:first-of-type{border:none}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:0.4rem;
  font-size:0.68rem;text-transform:uppercase;letter-spacing:0.08em;
  color:var(--accL);font-weight:700;margin-bottom:0.5rem;
}

/* ---- HERO ----------------------------------------------------- */
.lb-hero{
  padding:4rem 0 2rem;
  display:grid;gap:1.5rem;
  grid-template-columns:1fr;
}
@media(min-width:768px){
  .lb-hero{grid-template-columns:1fr auto;align-items:start;padding:5rem 0 2rem}
}
.lb-hero-title{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:0.75rem}
.lb-hero-sub{font-size:0.9rem;color:var(--ink2);max-width:480px;line-height:1.65}
.hero-meta{
  display:flex;align-items:center;gap:1rem;
  margin-top:1.25rem;flex-wrap:wrap;
}
.hero-meta-pill{
  font-weight: 700;
  display:inline-flex;align-items:center;gap:0.35rem;
  font-size:0.72rem;padding:0.3rem 0.75rem;border-radius:50px;
  color:var(--accXL);border:1px solid rgba(59,130,246,0.2);
}

/* Week switcher (matches demo_weekly pattern) */
.week-switcher{
  display:flex;align-items:center;gap:0.75rem;
  background:var(--surf);border:1px solid var(--border);
  border-radius:100px;padding:0.5rem 0.9rem;
  width:fit-content;max-width:100%;flex-shrink:0;
  white-space:nowrap;
}
.week-nav-btn{
  width:30px;height:30px;border-radius:50%;
  border:1px solid var(--borderL);background:var(--bg);
  color:var(--ink2);display:flex;align-items:center;justify-content:center;
  font-size:0.78rem;transition:background var(--ease),color var(--ease);flex-shrink:0;
}
.week-nav-btn:not(:disabled):hover{background:var(--acc);color:#fff}
.week-nav-btn:disabled{opacity:0.3;cursor:not-allowed}
.week-label-text{
  font-size:0.8rem;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:0.4rem;
}
.week-badge{
  background:rgba(59,130,246,0.12);color:var(--accL);
  padding:0.15rem 0.55rem;border-radius:50px;font-size:0.65rem;font-weight:700;
}
.current-badge{background:rgba(34,197,94,0.12);color:var(--ok)}

/* ---- STAGE: the card arena ----------------------------------- */
.lb-stage-wrap{
  position:relative;padding:2rem 0 3rem;
}

/* Podium row — top 3 */
.lb-podium{
  display:flex;align-items:flex-end;justify-content:center;
  gap:0.85rem;margin-bottom:1.25rem;
}
.podium-slot{
  flex:1;max-width:220px;
  display:flex;flex-direction:column;align-items:center;gap:0;
}
.podium-slot.rank1{max-width:270px}
.podium-slot.rank2,.podium-slot.rank3{max-width:200px}

/* Card wrapper: holds the 3D card */
.lb-card-wrap{
  width:100%;
  /* perspective is in advance CSS */
}

/* The flipping card */
.lb-card{
  width:100%;position:relative;
  min-height:190px;   /* was 160px - grown to give the now-larger avatar room without clipping */
  /* transform-style:preserve-3d added in advance CSS */
  cursor:pointer;
}
.lb-card.rank1{min-height:230px}   /* was 200px - matches the bigger rank-1 avatar below */

/* Card faces */
.lb-face{
  position:absolute;inset:0;
  background:var(--surf);border:1px solid var(--border);
  border-radius:var(--rXL);overflow:hidden;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:1.1rem;
  /* backface-visibility in advance CSS */
}
.lb-back{/* starts visible — advance CSS adds the correct 3D transform */}
.lb-front{/* starts hidden — advance CSS */}

/* Card back content */
.card-back-logo{
  font-size:1.5rem;color:rgba(59,130,246,0.35);margin-bottom:0.5rem;
  display:flex;flex-direction:column;align-items:center;gap:0.3rem;
}
.card-back-logo img{width:32px;height:32px;border-radius:8px;opacity:0.4}
.card-back-rank{
  font-size:2rem;font-weight:700;color:rgba(255,255,255,0.08);
  line-height:1;
}
.card-back-hint{font-size:0.63rem;color:var(--ink3);letter-spacing:0.08em;text-transform:uppercase;margin-top:0.5rem}

/* Card front content */

/* Profile picture — lazy-loaded image with an SVG person-outline
   fallback underneath. The fallback stays visible until (a) a valid
   image URL was supplied AND (b) it has actually finished loading.
   Sized up from the original 38/56/28px so the face is actually the
   thing you notice during the reveal, not a thumbnail next to the
   rank number - especially once the card is zoomed to screen-centre. */
.card-avatar{
  position:relative;
  width:54px;height:54px;flex-shrink:0;
  border-radius:50%;overflow:hidden;
  margin-bottom:0.5rem;
  background:var(--surf2);
  border:2px solid var(--border);
}
.card-avatar .avatar-placeholder{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink3);
}
.card-avatar .avatar-placeholder svg{
  width:60%;height:60%;
  fill:currentColor;stroke:currentColor;
}
.card-avatar img{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;
  opacity:0;
}
.card-avatar img.is-loaded{opacity:1}
.lb-card.card-rank-1 .card-avatar{width:80px;height:80px;margin-bottom:0.6rem;border-width:3px}
.lb-grid-row .card-avatar,.lb-strip-row .card-avatar{width:46px;height:46px;margin-bottom:0.4rem}

.card-rank-badge{
  font-size:1.4rem;font-weight:900;line-height:1;margin-bottom:0.35rem;
  display:flex;align-items:center;justify-content:center;gap:0.32rem;
}
.card-medal-icon{font-size:1.15em}
.rank-ordinal{font-size:0.72em}
.lb-grid-row .card-rank-badge,.lb-strip-row .card-rank-badge{font-size:1.15rem}
.card-public-id{
  font-size:0.82rem;font-weight:700;color:var(--ink);margin-bottom:0.3rem;
  word-break:break-all;text-align:center;
}
.card-streak{
  display:flex;align-items:center;gap:0.3rem;
  font-size:1.4rem;font-weight:700;color:var(--accL);line-height:1;
}
.card-streak-lbl{font-size:0.6rem;color:var(--ink3);text-transform:uppercase;letter-spacing:0.07em;margin-top:0.2rem}
.card-private{
  display:flex;align-items:center;gap:0.3rem;
  font-size:0.72rem;color:var(--ink3);
}

/* Rank 1 extra */
.card-crown{font-size:1.8rem;margin-bottom:0.2rem;display:block}

/* Podium base */
.podium-base{
  width:100%;height:12px;
  background:var(--surf2);border:1px solid var(--border);
  border-radius:0 0 var(--r) var(--r);margin-top:-1px;
}
.podium-slot.rank1 .podium-base{height:60px}
.podium-slot.rank2 .podium-base{height:36px}
.podium-slot.rank3 .podium-base{height:20px}
.podium-rank-num{
  font-size:1rem;font-weight:700;color:var(--ink2);
  text-align:center;padding-top:0.3rem;
}

/* ---- GRID ROW: ranks 4–7 ------------------------------------ */
.lb-grid-row{
  display:grid;gap:0.65rem;margin-bottom:1rem;
  grid-template-columns:repeat(2,1fr);
}
@media(min-width:640px){.lb-grid-row{grid-template-columns:repeat(4,1fr)}}

/* ---- STRIP ROW: ranks 8–10 ---------------------------------- */
.lb-strip-row{
  display:grid;gap:0.65rem;
  grid-template-columns:repeat(3,1fr);
}

/* Grid and strip cards are smaller, but still need enough height for
   the 46px avatar + badge + id + streak text to fit without the
   overflow:hidden face clipping anything (was 110px for a 28px avatar). */
.lb-grid-row .lb-card,.lb-strip-row .lb-card{min-height:150px}

/* ---- REVEAL SECTION ----------------------------------------- */
.reveal-wrap{
  display:flex;flex-direction:column;align-items:center;
  gap:1.5rem;padding:2rem 0;
}
.reveal-cta-area{
  text-align:center;
  position:relative;z-index:2;
}
.reveal-cta-label{
  font-size:0.7rem;color:var(--ink3);letter-spacing:0.1em;
  text-transform:uppercase;margin-bottom:0.75rem;
}

/* "Almost there" loading UI */
.almost-there{
  width:100%;max-width:420px;text-align:center;
  padding:2rem;display:none;
}
.almost-there.show{display:block}
.at-hud{
  display:flex;align-items:center;justify-content:center;
  gap:0.85rem;margin-bottom:1.1rem;
}
.at-ring-wrap{
  width:34px;height:34px;flex-shrink:0;
  position:relative;
}
.at-ring-dot{
  position:absolute;top:50%;left:50%;
  width:5px;height:5px;border-radius:50%;
  background:var(--acc);
  transform:translate(-50%,-50%);
}
.at-msg-wrap{text-align:left;height:1.5rem;width:auto;flex:1;max-width:260px}
.at-msg{text-align:left}
.at-bar-track{
  width:100%;height:4px;background:var(--border);
  border-radius:2px;overflow:hidden;margin:1rem 0;
}
.at-bar-fill{
  height:100%;width:0;background:var(--acc);border-radius:2px;
  transition:width 0.3s ease;
}
.at-msg-wrap{height:1.5rem;overflow:hidden;position:relative}
.at-msg{
  position:absolute;width:100%;font-size:0.82rem;color:var(--accXL);
  font-weight:600;opacity:0;transform:translateY(16px);
  transition:opacity 0.4s ease,transform 0.4s ease;text-align:left;
}
.at-msg.active{opacity:1;transform:translateY(0)}
.at-msg.exit{opacity:0;transform:translateY(-16px)}

/* Error state */
.lb-error{
  width:100%;max-width:420px;text-align:center;
  padding:2rem;display:none;
  border:1px dashed var(--borderL);border-radius:var(--rL);
}
.lb-error.show{display:block}

/* ---- YOUR RANK strip ---------------------------------------- */
.your-rank-strip{
  background:var(--surf);border:1px solid var(--border);
  border-left:4px solid var(--acc);
  border-radius:0 var(--rL) var(--rL) 0;
  padding:1.1rem 1.25rem;
  display:flex;align-items:center;gap:1rem;
  flex-wrap:wrap;
}
.yr-rank-num{
  font-size:2rem;font-weight:900;color:var(--accL);min-width:50px;
}
.yr-info{flex:1}
.yr-label{font-size:0.65rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--ink3)}
.yr-streak{font-size:1.1rem;font-weight:700;color:var(--ink)}

/* ---- STATS ROW (this week in numbers) ----------------------- */
.stats-strip{
  display:grid;gap:0.75rem;
  grid-template-columns:repeat(2,1fr);
}
@media(min-width:640px){.stats-strip{grid-template-columns:repeat(4,1fr)}}

.strip-stat{
  background:var(--surf);border:1px solid var(--border);
  border-radius:var(--rL);padding:1.1rem;text-align:center;
}
.ss-icon{font-size:1.3rem;color:var(--acc);margin-bottom:0.4rem;display:block}
.ss-num{font-size:1.6rem;font-weight:700;color:var(--ink);display:block;line-height:1}
.ss-lbl{font-size:0.63rem;color:var(--ink3);text-transform:uppercase;letter-spacing:0.07em;margin-top:0.25rem}

/* ---- ABOUT section ------------------------------------------ */
.about-grid{
  display:grid;gap:1rem;
  grid-template-columns:1fr;
}
@media(min-width:768px){.about-grid{grid-template-columns:1fr 1fr}}

.about-card{
  background:var(--surf);border:1px solid var(--border);
  border-radius:var(--rXL);padding:1.5rem;
}
.about-card h3{font-size:0.95rem;margin-bottom:0.65rem}
.about-card p{font-size:0.8rem;color:var(--ink2);line-height:1.65}
.about-icon{
  font-size:1.4rem;color:var(--accL);
  margin-bottom:0.65rem;display:block;
}

/* Privacy info icon + tooltip */
.priv-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:18px;height:18px;border-radius:50%;
  background:rgba(148,163,184,0.15);
  color:var(--ink3);font-size:0.65rem;
  cursor:pointer;position:relative;
  border:none;flex-shrink:0;
  transition:background var(--ease),color var(--ease);
}
.priv-icon:hover{background:var(--borderL);color:var(--ink2)}
.priv-tooltip{
  position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);
  background:var(--surf2);border:1px solid var(--borderL);
  border-radius:var(--r);padding:0.5rem 0.75rem;
  font-size:0.72rem;color:var(--ink2);
  white-space:nowrap;z-index:100;display:none;pointer-events:none;
}
.priv-icon:hover .priv-tooltip{display:block}

/* ---- FOOTER -------------------------------------------------- */
.site-footer{
  border-top:1px solid var(--border);
  padding:3.5rem 0 2rem;margin-top:2rem;
}
.footer-grid{
  display:grid;gap:2rem;
  grid-template-columns:1fr;
  margin-bottom:2rem;
}
@media(min-width:640px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
@media(min-width:900px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}

.footer-brand p{font-size:0.8rem;color:var(--ink2);line-height:1.6;margin-top:0.65rem;max-width:260px}
.footer-links h4{font-size:0.72rem;text-transform:uppercase;letter-spacing:0.09em;color:var(--ink3);margin-bottom:0.75rem}
.footer-links a{
  display:flex;align-items:center;gap:0.4rem;
  font-size:0.8rem;color:var(--ink2);padding:0.3rem 0;
  transition:color var(--ease);
}
.footer-links a i{font-size:0.75rem;width:14px;color:var(--ink3)}
.footer-links a:hover{color:var(--accL)}
.footer-links a:hover i{color:var(--accL)}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:1.5rem;
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:0.75rem;
}
.footer-bottom p{font-size:0.72rem;color:var(--ink3)}
.social-links{display:flex;gap:0.5rem}
.social-links a{
  width:32px;height:32px;border-radius:50%;
  background:var(--surf);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:0.82rem;color:var(--ink3);
  transition:color var(--ease),border-color var(--ease);
}
.social-links a:hover{color:var(--accL);border-color:var(--acc)}

/* ---- Skeleton (pre-reveal placeholder for stats) ------------ */
.sk{
  background:var(--surf2);border-radius:var(--r);
  /* shimmer animation in advance CSS */
}

/* ---- Utility ------------------------------------------------- */
.hidden{display:none!important}
.text-gold{color:var(--gold)}
.text-silver{color:var(--silver)}
.text-bronze{color:var(--bronze)}
.text-acc{color:var(--accL)}