/* ============================================================
   global.css — HTB-style dark green theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  /* ── Background layers ───────────────────────────────────── */
  --bg-base:       #0b1a0b;
  --bg-primary:    #0d1e0d;
  --bg-secondary:  #111f11;
  --bg-card:       #172417;
  --bg-elevated:   #1e2f1e;
  --bg-hover:      #223322;

  /* ── Brand green (HTB-style lime green) ──────────────────── */
  --green:         #9fef00;
  --green-bright:  #b3ff1a;
  --green-dim:     rgba(159, 239, 0, 0.10);
  --green-border:  rgba(159, 239, 0, 0.18);
  --green-glow:    rgba(159, 239, 0, 0.22);

  /* ── Atmospheric glow (large background orbs) ────────────── */
  --glow-hero:     rgba(20, 120, 20, 0.35);
  --glow-mid:      rgba(10, 80, 10, 0.25);

  /* ── Text ────────────────────────────────────────────────── */
  --text-primary:  #f0f4f0;
  --text-dim:      #b8ccb8;
  --text-muted:    #6b8a6b;
  --text-faint:    #3d5c3d;

  /* ── Borders ─────────────────────────────────────────────── */
  --border:        rgba(159, 239, 0, 0.07);
  --border-bright: rgba(159, 239, 0, 0.12);
  --border-card:   rgba(255, 255, 255, 0.05);

  /* ── Gold (for #1 rank) ──────────────────────────────────── */
  --gold:          #f5c518;
  --gold-dim:      rgba(245, 197, 24, 0.12);

  /* ── Teal accent ─────────────────────────────────────────── */
  --teal:          #00d4aa;

  /* ── Layout ──────────────────────────────────────────────── */
  --max-width:     1160px;
  --radius-sm:     6px;
  --radius:        10px;
  --radius-lg:     16px;
  --radius-xl:     20px;

  /* ── Shadows ─────────────────────────────────────────────── */
  --shadow-sm:     0 2px 8px rgba(0,0,0,.4);
  --shadow-md:     0 4px 24px rgba(0,0,0,.5);
  --shadow-lg:     0 8px 48px rgba(0,0,0,.6);

  /* ── Typography ──────────────────────────────────────────── */
  --font-heading:  'Space Grotesk', -apple-system, 'Segoe UI', system-ui, sans-serif;
  --font-body:     'Inter', -apple-system, 'Segoe UI', system-ui, sans-serif;
  --ease:          cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Layout ──────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: #fff;
  letter-spacing: -0.025em;
}

h1 { font-size: clamp(2rem, 3.5vw, 2.75rem); font-weight: 700; }
h2 { font-size: clamp(1.375rem, 2.5vw, 1.875rem); font-weight: 700; }
h3 { font-size: clamp(1.05rem, 1.8vw, 1.25rem); font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }

p { margin-bottom: 1rem; color: var(--text-dim); line-height: 1.75; }
p:last-child { margin-bottom: 0; }

a { color: var(--green); text-decoration: none; transition: opacity 0.15s var(--ease); }
a:hover { opacity: .75; }

strong { color: #fff; font-weight: 600; }

ul, ol { padding-left: 1.4em; }
li { margin-bottom: .4rem; }

/* ── Header ──────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 30, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* ── Logo ────────────────────────────────────────────────── */
.site-logo {
  display: flex;
  align-items: center;
  gap: .625rem;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo__img { height: 36px; width: auto; display: block; }

/* ── Nav ─────────────────────────────────────────────────── */
.site-nav { display: none; }

.site-nav a {
  font-size: .8125rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.15s var(--ease);
  letter-spacing: 0.01em;
}

.site-nav a:hover,
.site-nav a.active { color: #fff; opacity: 1; }

.nav-divider {
  width: 1px;
  height: 16px;
  background: var(--border-bright);
  flex-shrink: 0;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: var(--green);
  color: #0d1e0d !important;
  font-size: .8125rem;
  font-weight: 700;
  padding: .5rem 1.125rem;
  border-radius: var(--radius);
  white-space: nowrap;
  letter-spacing: 0.01em;
  transition: background 0.15s var(--ease), box-shadow 0.15s var(--ease), transform 0.15s var(--ease) !important;
}

.nav-cta:hover {
  background: var(--green-bright) !important;
  box-shadow: 0 4px 20px rgba(159,239,0,.25) !important;
  transform: translateY(-1px);
  opacity: 1 !important;
}

/* ── Hamburger ───────────────────────────────────────────── */
.nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Section base ────────────────────────────────────────── */
.section { padding: 5rem 0; }

.section__header { margin-bottom: 3rem; }

.section__label {
  display: inline-block;
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--green);
  margin-bottom: .75rem;
}

.section__header h2 { margin-bottom: .625rem; }

.section__header p {
  color: var(--text-muted);
  max-width: 560px;
  font-size: .9375rem;
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2.5rem;
  margin-top: 6rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--green);
  margin-bottom: 1rem;
}

.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: .5rem; }

.footer-col ul li a {
  font-size: .875rem;
  color: var(--text-muted);
  transition: color 0.15s var(--ease);
}

.footer-col ul li a:hover { color: #fff; opacity: 1; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer-bottom p { font-size: .8125rem; color: var(--text-faint); margin: 0; }

.footer-bottom a {
  color: var(--text-faint);
  font-size: .8125rem;
  transition: color 0.15s;
}

.footer-bottom a:hover { color: var(--green); opacity: 1; }

/* ── Utilities ───────────────────────────────────────────── */
.text-green  { color: var(--green); }
.text-gold   { color: var(--gold); }
.text-muted  { color: var(--text-muted); }
.text-center { text-align: center; }

/* ── Desktop nav ─────────────────────────────────────────── */
@media (min-width: 768px) {
  .nav-toggle { display: none; }

  .site-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }

  .footer-grid { grid-template-columns: repeat(3, 1fr); }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ── Mobile nav open ─────────────────────────────────────── */
@media (max-width: 767px) {
  .container { padding: 0 1.25rem; }

  .site-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 1.5rem 1.75rem;
    gap: .875rem;
  }

  .nav-divider { display: none; }
  .site-nav a { font-size: .9375rem; }
}