/* ===== Tokens: change the theme here ===== */
:root {
  --void: #07090a;      /* page */
  --cave: #0f1314;      /* cards */
  --line: #1f2527;      /* borders */
  --fog: #8a9396;       /* muted text */
  --bone: #e4e0d6;      /* text */
  --raincoat: #d6a537;  /* accent (Jonas's jacket) */

  /*
    Type roles (keep to these):
    --display  Eczar: the Hindi title, headings, big numbers. Has Devanagari + Latin.
    --body     Instrument Sans: all reading text and interface (nav, buttons, labels).
    --mono     JetBrains Mono: ONLY CTF-technical bits (cycle years, countdown, team handles, flags).
  */
  --display: "Eczar", Georgia, serif;
  --body: "Instrument Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;

  --max: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 4px;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
body {
  margin: 0;
  background: var(--void);
  color: var(--bone);
  font: 400 1.0625rem/1.65 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* faint film grain */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 100; opacity: .05;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='.9'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
h1, h2, h3, h4, p { margin: 0; }
a { color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; margin: 0; padding: 0; }
.label { font-size: .875rem; }
.caps { font-size: .72rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; }
.mono { font-family: var(--mono); letter-spacing: 0; }
.dim { color: var(--fog); }
:focus-visible { outline: 2px solid var(--raincoat); outline-offset: 3px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 200; background: var(--raincoat); color: var(--void); padding: .5rem 1rem; }

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .875rem var(--gutter);
  background: color-mix(in srgb, var(--void) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; }
.brand img { border-radius: 50%; }
.brand .hi { font: 700 1.35rem/1 var(--display); }
.brand b { font: 600 .85rem var(--body); color: var(--raincoat); }
.nav-links { display: flex; gap: 1.5rem; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--fog); font-size: .875rem; font-weight: 500; }
.nav-links a:hover { color: var(--bone); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--bone); font: 500 .85rem var(--body); padding: .45rem .8rem; border-radius: var(--radius); cursor: pointer; }

@media (max-width: 1080px) {
  .nav-toggle { display: block; }
  .nav .btn-sm { margin-left: auto; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--void); border-bottom: 1px solid var(--line);
  }
  .menu-open .nav-links { display: flex; }
  .nav-links a { padding: 1rem var(--gutter); border-top: 1px solid var(--line); font-size: 1rem; }
}

/* ===== Hero: the signature ===== */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: calc(100svh - 3.6rem);
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  padding: 2.5rem var(--gutter);
}
.hero-knot {
  position: absolute; z-index: -1; width: min(110vw, 46rem); top: 50%; left: 50%;
  translate: -50% -50%;
  fill: none; stroke: var(--raincoat); stroke-width: .35; opacity: .18;
  animation: turn 120s linear infinite;
}
@keyframes turn { to { rotate: 360deg; } }
.hero-logo {
  width: clamp(8rem, 26vw, 11.5rem); height: auto; margin-bottom: 1rem;
  -webkit-mask-image: radial-gradient(circle, #000 60%, transparent 71%);
          mask-image: radial-gradient(circle, #000 60%, transparent 71%);
  filter: drop-shadow(0 0 2.5rem rgb(226 85 42 / .25));
}
.cycle { display: flex; gap: clamp(1rem, 5vw, 3rem); color: var(--fog); margin-bottom: 1.25rem; font-size: .85rem; }
.cycle .now { color: var(--raincoat); }
.title-en { display: block; font: 600 clamp(.72rem, 1.4vw, .85rem) var(--body); letter-spacing: .42em; margin-right: -.42em; text-transform: uppercase; color: var(--fog); margin-bottom: .5rem; }
.title { display: block; }
.title, .title-mirror {
  font: 800 clamp(3.5rem, 16vw, 8rem)/1.15 var(--display);
  letter-spacing: 0; /* tracking breaks the Devanagari headline bar */
}
.title-mirror {
  transform: scaleY(-1); margin-top: -.45em; color: var(--bone); opacity: .35;
  -webkit-mask-image: linear-gradient(to top, #000 0%, transparent 70%);
          mask-image: linear-gradient(to top, #000 0%, transparent 70%);
  user-select: none;
}
.tagline { font: italic 400 clamp(1.1rem, 2.4vw, 1.45rem)/1.4 var(--body); max-width: 32ch; margin-top: .75rem; }
.summary { color: var(--fog); max-width: 46ch; margin-top: 1rem; }
.hero-cta { display: flex; flex-direction: column; align-items: center; gap: .6rem; margin-top: 2rem; }
.when { color: var(--fog); }


.btn {
  display: inline-block; padding: .85rem 1.5rem; border-radius: var(--radius);
  background: var(--raincoat); color: var(--void); text-decoration: none;
  font: 600 .95rem var(--body);
  transition: transform .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: .5rem .9rem; font-size: .85rem; }
.btn-ghost, .btn[aria-disabled="true"] { background: none; color: var(--raincoat); border: 1px solid var(--raincoat); }
.btn[aria-disabled="true"] { pointer-events: none; }

.countdown { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem 1.5rem; margin-top: 2rem; color: var(--fog); }
.countdown li { display: flex; flex-direction: column; align-items: center; font: 500 .72rem var(--body); letter-spacing: .14em; text-transform: uppercase; }
.countdown .cd-label { flex-basis: 100%; }
.countdown b { font: 500 clamp(1.5rem, 5vw, 2.3rem) var(--mono); color: var(--bone); letter-spacing: 0; }

/* Organisers band: the NFSU logo is shown exactly as supplied, on white (its intended background) */
.org-band { max-width: var(--max); margin: 0 auto; padding: 2.5rem var(--gutter) 3rem; display: flex; flex-direction: column; align-items: center; gap: 1rem; text-align: center; color: var(--fog); }
.org-band .caps { color: var(--raincoat); }
.org-card { background: #fff; border-radius: 8px; padding: clamp(.9rem, 2.5vw, 1.5rem) clamp(1rem, 3vw, 2rem); }
.org-card img { width: min(30rem, 78vw); height: auto; }
.org-band b { color: var(--bone); font-weight: 600; }

/* ===== Sections ===== */
.section { max-width: var(--max); margin: 0 auto; padding: clamp(4rem, 10vw, 7rem) var(--gutter); border-top: 1px solid var(--line); }
.head { margin-bottom: 2.5rem; }
.eyebrow { font: 600 .75rem var(--body); letter-spacing: .18em; text-transform: uppercase; color: var(--raincoat); margin-bottom: .6rem; }
h2 { font: 700 clamp(1.8rem, 4.2vw, 2.8rem)/1.15 var(--display); }
h3 { font-size: 1.125rem; font-weight: 600; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr)); }
.card { background: var(--cave); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; transition: border-color .2s; }
.card:hover { border-color: color-mix(in srgb, var(--raincoat) 50%, var(--line)); }
.card p { color: var(--fog); margin-top: .4rem; }
.card .tag { color: var(--raincoat); margin: 0 0 .35rem; }

/* About */
.about { display: grid; gap: 2.5rem; grid-template-columns: 1.4fr 1fr; align-items: start; }
.about p + p { margin-top: 1rem; }
.about > div p:first-child { font: 600 clamp(1.3rem, 2.4vw, 1.6rem)/1.35 var(--display); }
.facts { border: 1px solid var(--line); border-radius: var(--radius); margin: 0; }
.facts div { display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 1.1rem; }
.facts div + div { border-top: 1px solid var(--line); }
.facts dt { color: var(--fog); }
.facts dd { margin: 0; text-align: right; font-weight: 600; }
@media (max-width: 760px) { .about { grid-template-columns: 1fr; } }

/* Timeline: a single yellow thread */
.thread { position: relative; padding-left: 2rem; }
.thread::before { content: ""; position: absolute; left: .35rem; top: .4rem; bottom: .4rem; width: 1px; background: var(--raincoat); opacity: .5; }
.thread li { position: relative; padding-bottom: 2.25rem; }
.thread li:last-child { padding-bottom: 0; }
.thread li::before { content: ""; position: absolute; left: -2rem; top: .3rem; width: .75rem; height: .75rem; border: 1px solid var(--raincoat); background: var(--void); rotate: 45deg; }
.thread .when { color: var(--raincoat); }
.thread h3 { margin-top: .2rem; font: 700 1.35rem/1.3 var(--display); }
.thread p:last-child { color: var(--fog); }
.thread .phase { color: var(--bone); opacity: .75; margin: .1rem 0 .3rem; }

/* Prizes */
.prize strong { display: block; font: 800 clamp(1.8rem, 4vw, 2.4rem) var(--display); margin-top: .3rem; }
.prize .caps { color: var(--raincoat); margin: 0; }
.note { color: var(--fog); margin-top: 1.25rem; }
.note a { color: var(--raincoat); }

/* Sponsors + people tiers */
.tier + .tier { margin-top: 2.5rem; }
.tier > h3 { color: var(--fog); margin-bottom: 1rem; }
.logos { grid-template-columns: repeat(auto-fill, minmax(min(100%, 12rem), 1fr)); }
.logo { display: grid; place-items: center; aspect-ratio: 16 / 9; padding: 1.25rem; }
.logo img { max-height: 4rem; object-fit: contain; filter: grayscale(1) brightness(1.6); transition: filter .2s; }
.logo:hover img { filter: none; }
/* dark-lettered logos (e.g. black text on transparent): flip light/dark so they sit on the dark tiles like the rest */
.logo-invert img { filter: grayscale(1) invert(1) brightness(1.1); }
.logo-invert:hover img { filter: grayscale(1) invert(1) brightness(1.25); } /* no colour on hover: inverting would turn its red pink */
.placeholder { position: relative; background: none; border-style: dashed; color: var(--fog); font-weight: 500; font-size: .9rem; }
.placeholder a { text-decoration: none; display: grid; place-items: center; position: absolute; inset: 0; }
.placeholder a:hover { color: var(--raincoat); }

.people { grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr)); }
.person { display: flex; gap: 1rem; align-items: center; }
.avatar { flex: none; width: 3.5rem; height: 3.5rem; border-radius: 50%; position: relative; overflow: hidden; display: grid; place-items: center; border: 1px solid var(--raincoat); color: var(--raincoat); font-weight: 600; }
.avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.person .role { color: var(--raincoat); margin: 0; }
.person h4 { font-size: 1.05rem; font-weight: 600; margin-top: .15rem; }
.person p:last-child { font-size: .9rem; margin-top: .1rem; }

/* Rules */
.rules { grid-template-columns: repeat(auto-fill, minmax(min(100%, 26rem), 1fr)); }
.rules h3 { font: 700 1.3rem var(--display); }
.rules ul { margin-top: .75rem; display: grid; gap: .6rem; }
.rules li { position: relative; padding-left: 1.1rem; color: var(--fog); font-size: .95rem; line-height: 1.55; }
.rules li::before { content: ""; position: absolute; left: 0; top: .6em; width: .4rem; height: .4rem; border: 1px solid var(--raincoat); rotate: 45deg; }

/* Stats (1.0 numbers) */
.stats { display: grid; gap: 2rem 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr)); }
.stats li { border-left: 1px solid var(--raincoat); padding-left: 1rem; display: flex; flex-direction: column; gap: .15rem; }
.stats strong { font: 800 clamp(1.9rem, 4vw, 2.6rem)/1.1 var(--display); }
.stats span { color: var(--fog); }
.past-label { color: var(--fog); margin: 2.5rem 0 .75rem; }
.past-sponsors { color: var(--fog); max-width: 60rem; line-height: 1.9; }

/* FAQ */
.faq { max-width: 48rem; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 1.1rem 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--raincoat); font-size: 1.2rem; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--fog); padding-bottom: 1.1rem; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 3rem var(--gutter); display: flex; flex-direction: column; align-items: center; gap: 1rem; text-align: center; }
.socials { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; }
.socials a { color: var(--fog); text-decoration: none; font-weight: 500; font-size: .9rem; }
.socials a:hover { color: var(--raincoat); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ===== 1.0 highlights page (1.0/index.html) ===== */
.nav-back { margin-left: auto; color: var(--fog); text-decoration: none; font-size: .875rem; font-weight: 500; }
.nav-back:hover { color: var(--bone); }
@media (max-width: 520px) { .nav-back { display: none; } .nav .btn-sm { margin-left: auto; } }

/* Hero: full-screen photo that pins and slowly settles while the headline scrolls up over it */
.hl-hero { position: relative; }
.hl-photo { position: relative; height: calc(100svh - 3.6rem); overflow: hidden; }
.hl-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 72%; }
.hl-photo::after { content: ""; position: absolute; inset: auto 0 0; height: 18%; background: linear-gradient(transparent, var(--void)); }
.hl-cue { position: absolute; left: 50%; bottom: 1.25rem; translate: -50% 0; z-index: 1; color: var(--bone); }
.hl-hero-text { position: relative; text-shadow: 0 2px 18px rgb(0 0 0 / .7); max-width: var(--max); margin: 0 auto; padding: 2.5rem var(--gutter) 3.5rem; }
.hl-hero h1 { font: 800 clamp(2.2rem, 6vw, 4.2rem)/1.05 var(--display); max-width: 16ch; }
.hl-hero .title-en { margin-right: 0; margin-bottom: 1rem; color: var(--raincoat); }
.hl-hero .summary { margin-top: 1.25rem; font-size: 1.1rem; }
@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .hl-photo { position: sticky; top: 3.6rem; }
    .hl-photo img { animation: hl-settle linear both; animation-timeline: scroll(root); animation-range: 0 55svh; }
    .hl-cue { animation: hl-fade linear both; animation-timeline: scroll(root); animation-range: 0 20svh; }
  }
}
@keyframes hl-settle { from { scale: 1.12; } to { scale: 1; filter: brightness(.35); } }
@keyframes hl-fade { to { opacity: 0; } }
/* portrait screens: show the whole group photo uncropped */
@media (max-aspect-ratio: 1 / 1) { .hl-photo { height: auto; } .hl-photo img { height: auto; } .hl-cue { display: none; } }

.stats-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 640px) { .stats-3 { grid-template-columns: repeat(2, 1fr); } }

.gallery { display: grid; gap: 1rem; grid-template-columns: 2fr 1fr; }
.gallery .g-wide { grid-row: span 2; }
.gallery figure, .wide-photo { margin: 0; }
.gallery img, .wide-photo img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }
.gallery figure { display: flex; flex-direction: column; gap: .5rem; min-height: 0; min-width: 0; }
.gallery figure img { flex: 1; min-height: 0; }
figcaption { color: var(--fog); font-size: .85rem; }
@media (max-width: 760px) { .gallery { grid-template-columns: 1fr; } .gallery .g-wide { grid-row: auto; } .gallery figure img { flex: none; height: auto; aspect-ratio: 4 / 3; } }

.podium { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.place { padding: 0; overflow: hidden; }
.place img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.place > :not(img) { padding: 0 1.25rem; }
.place .caps { color: var(--raincoat); margin-top: 1rem; }
.place h3 { font-size: 1.2rem; font-weight: 500; margin-top: .3rem; }
.place strong { display: block; font: 800 1.9rem var(--display); margin-top: .2rem; }
.place .dim { font-size: .88rem; margin: .2rem 0 1.25rem; }
.place.gold { border-color: var(--raincoat); }
.wide-photo { margin-top: 1rem; display: flex; flex-direction: column; gap: .5rem; }

.cta-block { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.cta-row { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; margin-top: .5rem; }