/* ============================================================
   Leo's Perfect Perches — design system
   Type:  Space Grotesk (display) / IBM Plex Sans (body) / IBM Plex Mono (technical)
   Color: warm off-white + near-black ink, teal hero, marigold accent
   ============================================================ */

:root {
  /* ---- color ---- */
  --paper:      oklch(0.985 0.006 95);   /* warm off-white page */
  --paper-2:    oklch(0.965 0.008 95);   /* slightly deeper card */
  --ink:        oklch(0.205 0.012 60);   /* warm near-black */
  --ink-2:      oklch(0.205 0.012 60 / 0.62);
  --ink-3:      oklch(0.205 0.012 60 / 0.38);
  --hairline:   oklch(0.205 0.012 60 / 0.14);
  --hairline-2: oklch(0.205 0.012 60 / 0.08);

  --teal:       oklch(0.605 0.108 205);  /* confident hero teal */
  --teal-deep:  oklch(0.46 0.092 210);
  --teal-ink:   oklch(0.33 0.07 215);
  --teal-wash:  oklch(0.94 0.026 200);

  --marigold:   oklch(0.82 0.155 88);    /* punchy accent */
  --marigold-deep: oklch(0.73 0.16 78);

  --good:       oklch(0.62 0.11 165);
  --bad:        oklch(0.60 0.16 32);
  --meh:        oklch(0.70 0.07 75);

  /* ---- type ---- */
  --display: "Space Grotesk", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  /* ---- layout ---- */
  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 72px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--marigold); color: var(--ink); }

h1, h2, h3, h4 { font-family: var(--display); font-weight: 700; margin: 0; line-height: 1.02; letter-spacing: -0.02em; text-wrap: balance; }

p { margin: 0; text-wrap: pretty; }
a { color: inherit; text-decoration: none; }

/* ---- utility ---- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(72px, 11vw, 150px); }

.kicker {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.kicker .num { color: var(--teal); }
.kicker--onteal { color: oklch(1 0 0 / 0.78); }
.kicker--onteal .num { color: var(--marigold); }
.kicker--ondark { color: oklch(1 0 0 / 0.62); }
.kicker--ondark .num { color: var(--marigold); }

.h-display { font-size: clamp(2.6rem, 6.8vw, 5.4rem); }
.h-section { font-size: clamp(2rem, 4.4vw, 3.4rem); }
.lead { font-size: clamp(1.12rem, 1.6vw, 1.4rem); color: var(--ink-2); line-height: 1.5; }

.mark { background: linear-gradient(transparent 66%, var(--marigold) 66% 96%, transparent 96%); padding: 0 .06em; -webkit-box-decoration-break: clone; box-decoration-break: clone; }

/* ---- buttons ---- */
.btn {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  border: none;
  border-radius: 999px;
  padding: 16px 28px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform .12s ease, background .15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn--primary { background: var(--teal); color: oklch(0.99 0 0); }
.btn--primary:hover { background: var(--teal-deep); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: oklch(0.30 0.012 60); }
.btn--marigold { background: var(--marigold); color: var(--ink); }
.btn--marigold:hover { background: var(--marigold-deep); }
.btn--ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--hairline); }
.btn--ghost:hover { box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn--lg { padding: 19px 34px; font-size: 1.08rem; }

/* ---- image placeholder ---- */
.ph {
  position: relative;
  background-color: var(--paper-2);
  background-image: repeating-linear-gradient(
    -45deg,
    oklch(0.205 0.012 60 / 0.05) 0 1px,
    transparent 1px 11px
  );
  border: 1px solid var(--hairline);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  color: var(--ink-2);
}
.ph--teal {
  background-color: var(--teal-deep);
  background-image: repeating-linear-gradient(-45deg, oklch(1 0 0 / 0.07) 0 1px, transparent 1px 11px);
  color: oklch(1 0 0 / 0.82);
  border-color: oklch(1 0 0 / 0.18);
}
.ph__tag {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 9px 12px;
  background: var(--paper);
  border-top-right-radius: 10px;
  border: 1px solid var(--hairline);
  border-bottom: none;
  border-left: none;
  max-width: 88%;
}
.ph--teal .ph__tag { background: var(--teal-ink); border-color: oklch(1 0 0 / 0.2); color: oklch(1 0 0 / 0.9); }

/* ---- card ---- */
.card {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: 16px;
}

/* ---- chip ---- */
.chip {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-2);
  background: var(--paper);
  white-space: nowrap;
}
.chip::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 2px;
  background: var(--teal);
  flex-shrink: 0;
  transform: rotate(45deg);
}
.ph__tag::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 2px;
  background: var(--teal);
  margin-right: 7px;
  transform: rotate(45deg);
  vertical-align: middle;
}

/* ---- reveal-on-scroll ---- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* scrollbar-free utility */
.noscroll::-webkit-scrollbar { display: none; }