/* ============================================================
   Beta Psi Omega — Alpha Chapter
   Design system: editorial serif + clean grotesk, forest & gold
   ============================================================ */

:root {
  /* Brand */
  --forest-dark: #202B22;
  --forest:      #2F4335;
  --forest-light:#4A6452;
  --gold:        #FFD85F;
  --gold-light:  #FFE9A3;
  --gold-dark:   #D9AE38;

  /* Neutrals (warm, low chroma) */
  --paper:   oklch(98.5% 0.006 95);   /* warm off-white */
  --paper-2: oklch(96.2% 0.008 95);   /* slightly deeper card */
  --ink:     oklch(22% 0.014 150);     /* green-tinted near-black */
  --ink-soft:oklch(38% 0.014 150);
  --ink-mute:oklch(54% 0.012 150);
  --line:    oklch(89% 0.009 150);

  /* Accent (tweakable) */
  --accent: var(--gold);

  /* Type */
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:  "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --mono:  "Space Mono", ui-monospace, "SF Mono", monospace;

  /* Display scale (tweakable) */
  --display-scale: 1;

  /* Golden-ratio spacing scale (x1.618) */
  --s1: 12px;
  --s2: 19px;
  --s3: 31px;
  --s4: 50px;
  --s5: 81px;
  --s6: 131px;

  /* One light source: tight contact + wide ambient */
  --sh-1: 0 1px 2px rgba(20,32,24,.06), 0 8px 18px -10px rgba(20,32,24,.18);
  --sh-2: 0 2px 4px rgba(20,32,24,.07), 0 22px 44px -20px rgba(20,32,24,.26);
  --sh-3: 0 3px 6px rgba(20,32,24,.08), 0 40px 70px -28px rgba(20,32,24,.34);

  --maxw: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 18px;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.026em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--s3);
}

/* ---------- Eyebrow / labels ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.serif-i { font-style: italic; }
.accent-text { color: var(--accent); }
/* gold is reserved for headline accent phrases */
.hl-accent { color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  padding: 16px 26px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .25s var(--ease), background .2s, color .2s, box-shadow .25s var(--ease), border-color .2s;
  will-change: transform;
}
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  background: var(--forest-dark);
  color: #fff;
  box-shadow: var(--sh-1);
}
.btn-primary:hover { transform: translateY(-2px); background: var(--forest); box-shadow: var(--sh-2); }

.btn-dark { background: var(--forest-dark); color: #fff; }
.btn-dark:hover { transform: translateY(-2px); background: var(--forest); }

.btn-ghost { background: transparent; color: var(--ink); border-color: color-mix(in oklab, var(--ink), transparent 78%); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

.btn-ondark { background: transparent; color: #fff; border-color: rgba(255,255,255,.34); }
.btn-ondark:hover { background: #fff; color: var(--forest-dark); transform: translateY(-2px); }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Image placeholders ---------- */
.ph {
  position: relative;
  background-color: var(--paper-2);
  background-image:
    repeating-linear-gradient(135deg,
      color-mix(in oklab, var(--forest), transparent 92%) 0 2px,
      transparent 2px 11px);
  border: 1px solid var(--line);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.ph.dark {
  background-color: color-mix(in oklab, var(--forest-dark), #000 14%);
  background-image:
    repeating-linear-gradient(135deg, rgba(255,255,255,.05) 0 2px, transparent 2px 11px);
  border-color: rgba(255,255,255,.12);
}
.ph-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 9px;
  margin: 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.ph.dark .ph-tag { color: rgba(255,255,255,.72); background: rgba(0,0,0,.35); border-color: rgba(255,255,255,.18); }
.ph-tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--forest-light); }

/* ---------- Section scaffolding ---------- */
section { position: relative; }
.section-pad { padding: var(--s6) 0; }
.section-head { max-width: 760px; }
.section-head h2 { font-size: clamp(36px, 4.8vw, 64px); letter-spacing: -0.03em; }
.kicker-row { display: flex; align-items: center; gap: var(--s1); margin-bottom: var(--s2); }
.kicker-row .eyebrow { color: var(--forest-light); }
.kicker-line { height: 1px; width: 46px; background: var(--forest-light); }

/* utility */
.green-bg { background: var(--forest-dark); color: #fff; }
.green-bg h2, .green-bg h3 { color: #fff; }