/* ============================================================
   Stillmark.com — Redesign Prototype
   Foundation + layout + theming (dark / light)
   ============================================================ */

/* ---------- @font-face ------------------------------------- */
@font-face {
  font-family: "Inferi";
  src: url("../fonts/Inferi-Regular.woff2") format("woff2"),
       url("../fonts/Inferi-Regular.woff") format("woff");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Moderat";
  src: url("../fonts/Moderat-Regular.woff2") format("woff2"),
       url("../fonts/Moderat-Regular.woff") format("woff");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Moderat Extended";
  src: url("../fonts/Moderat-Extended-Bold.woff2") format("woff2"),
       url("../fonts/Moderat-Extended-Bold.woff") format("woff");
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Avenue Mono";
  src: url("../fonts/Avenue_Mono.woff2") format("woff2"),
       url("../fonts/Avenue_Mono.woff") format("woff");
  font-weight: 400; font-style: normal; font-display: swap;
}

/* ---------- Tokens ----------------------------------------- */
:root {
  --serif:   "Inferi", "Iowan Old Style", Georgia, serif;
  --sans:    "Moderat", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --display: "Moderat Extended", "Moderat", "Helvetica Neue", sans-serif;
  --mono:    "Avenue Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* brand constants */
  --green:        #29886D;
  --green-bright: #47BF9D;   /* brightened: AA (≥4.9:1) as eyebrow text on forest */
  --forest:       #0A413C;
  --forest-deep:  #07302C;
  --paper:        #F4F1EA;
  --paper-deep:   #ECE6D9;
  --ink:          #0F1411;
  --amber:        #E6B10E;
  --orange:       #E36231;

  --shell: 1320px;
  --gutter: clamp(20px, 5vw, 80px);

  /* default accent (overridable by tweak) */
  --accent: var(--green-bright);
  --accent-warm: var(--amber);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ----- DARK theme (default) ----- */
[data-theme="dark"] {
  --bg:        #073029;   /* forest green canvas */
  --bg-2:      #0A413C;   /* deeper forest band */
  --panel:     #0C4942;
  --fg:        #F1EEE6;
  --fg-dim:    #BDC3BD;
  --fg-faint:  #939B94;   /* AA on forest canvas — 5.0:1 */
  --rule:      rgba(241,238,230,0.12);
  --rule-2:    rgba(241,238,230,0.22);
  --accent:    var(--green-bright);
  --on-accent: #06120E;
  /* a band that flips to LIGHT for contrast within dark */
  --invert-bg: #F1EEE6;
  --invert-bg2:#E7E1D4;
  --invert-fg: #0F1411;
  --invert-faint: #5E645B;   /* AA (≥4.8:1) on the light footer/invert panel */
  --invert-rule: rgba(15,20,17,0.14);
  --invert-accent: #1E6F58;
  --hero-glow: rgba(63,180,146,0.22);
}

/* ----- LIGHT theme ----- */
[data-theme="light"] {
  --bg:        #F4F1EA;
  --bg-2:      #ECE6D9;
  --panel:     #FFFFFF;
  --fg:        #0F1411;
  --fg-dim:    #2A2F2C;
  --fg-faint:  #5E635F;   /* AA on paper surfaces — 4.9:1 */
  --rule:      rgba(15,20,17,0.13);
  --rule-2:    rgba(15,20,17,0.24);
  --accent:    #1E6F58;   /* deepened green: AA as text on paper (5.1:1) & under white button text (6:1) */
  --on-accent: #FFFFFF;
  /* a band that flips to DARK for contrast within light */
  --invert-bg: #07302C;
  --invert-bg2:#0A413C;
  --invert-fg: #F1EEE6;
  --invert-faint: rgba(241,238,230,0.62);
  --invert-rule: rgba(241,238,230,0.16);
  --invert-accent: #3FB492;
  --hero-glow: rgba(41,136,109,0.16);
}

/* ---------- Reset ------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.6s var(--ease), color 0.6s var(--ease);
}
a { color: inherit; text-decoration: none; }

/* Skip-to-content link — visible only on keyboard focus */
.skip-link {
  position: fixed; top: 12px; left: 12px; z-index: 1000;
  transform: translateY(-150%);
  background: var(--accent); color: var(--on-accent);
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 12px 18px; border-radius: 8px;
  transition: transform 0.2s var(--ease);
}
.skip-link:focus-visible {
  transform: translateY(0);
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Layout helpers --------------------------------- */
.shell { max-width: var(--shell); margin: 0 auto; padding-inline: var(--gutter); }
.shell-wide { max-width: 1640px; margin: 0 auto; padding-inline: var(--gutter); }

/* ---------- Type primitives -------------------------------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-faint);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--accent);
  display: inline-block;
}
.eyebrow--plain::before { display: none; }

.mono { font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em; }
.mono-cap {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-faint);
}

.serif-hero {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(44px, 8vw, 132px);
  line-height: 0.98; letter-spacing: -0.018em;
  margin: 0;
}
.serif-hero em { font-style: normal; color: var(--accent); }

.serif-xl {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(34px, 5vw, 76px);
  line-height: 1.04; letter-spacing: -0.012em; margin: 0;
}
.serif-xl em { font-style: italic; color: var(--accent); }

.serif-l {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(26px, 3.2vw, 44px);
  line-height: 1.14; letter-spacing: -0.008em; margin: 0;
}
.serif-l em { font-style: italic; color: var(--accent); }

.display {
  font-family: var(--display); font-weight: 700;
  text-transform: uppercase; letter-spacing: -0.01em;
  line-height: 0.98; margin: 0;
}
.display-xl { font-size: clamp(48px, 9vw, 124px); }
.display-l  { font-size: clamp(30px, 4vw, 56px); }
.display-m  { font-size: clamp(22px, 2.4vw, 34px); }

.lede {
  font-family: var(--sans); font-weight: 400;
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.5; color: var(--fg-dim);
  max-width: 40ch;
}
.body-l { font-size: 19px; line-height: 1.6; color: var(--fg-dim); }
.body   { font-size: 17px; line-height: 1.6; color: var(--fg-dim); }

/* ---------- Buttons / links -------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.7em;
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 15px 26px;
  border-radius: 999px; transition: all 0.4s var(--ease);
  white-space: nowrap;
}
.btn--solid { background: var(--accent); color: #fff; }
.btn--solid-light { background: #47BF9D; color: var(--forest); }
/* Rollover: lift 2px, brighten 8% */
.btn--solid:hover,
.btn--solid-light:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
}
/* Press: settle back down, shave the brightness */
.btn--solid:active,
.btn--solid-light:active {
  transform: translateY(0);
  filter: brightness(0.98);
  transition-duration: 0.08s;
}
.btn--ghost { border: 1px solid var(--rule-2); color: var(--fg); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn--ghost:active { transform: translateY(0); background: color-mix(in oklch, var(--accent) 8%, transparent); transition-duration: 0.08s; }
/* Keyboard focus: visible accent ring, no ring on mouse click */
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}
.btn .arr { transition: transform 0.4s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--fg);
  border-bottom: 1px solid transparent; padding-bottom: 3px;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.link-arrow .arr { transition: transform 0.4s var(--ease); color: var(--accent); }
.link-arrow:hover { color: var(--accent); }
.link-arrow:hover .arr { transform: translateX(5px); }
.spread__news .arr, .rs-ft .arr, .rs-t .arr, .rs-x .arr, .media-card .arr { display: inline-block; color: var(--accent); transition: transform 0.4s var(--ease); }
.spread__news:hover .arr, .rs-ft a:hover .arr, .rs-t a:hover .arr, .rs-x:hover .arr { transform: translate(3px,-3px); }

/* ---------- Section scaffolding ---------------------------- */
.section { position: relative; padding-block: clamp(80px, 12vh, 170px); }
.section--tight { padding-block: clamp(56px, 8vh, 110px); }
.band { background: var(--bg-2); }
.invert {
  background: var(--invert-bg);
  color: var(--invert-fg);
  --fg: var(--invert-fg);
  --fg-dim: var(--invert-fg);
  --fg-faint: var(--invert-faint);
  --rule: var(--invert-rule);
  --rule-2: var(--invert-rule);
  --bg-2: var(--invert-bg2);
  --accent: var(--invert-accent);
  --on-accent: #06120E;
}
.invert .lede, .invert .body, .invert .body-l { color: color-mix(in oklab, var(--invert-fg) 82%, transparent); }

.rule { height: 1px; background: var(--rule); border: 0; margin: 0; }

/* Section header — editorial grid */
.s-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
  margin-bottom: clamp(48px, 7vh, 96px);
}
.s-head__index {
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--fg-faint);
  display: flex; gap: 1.4em; align-items: baseline;
  margin-bottom: 26px;
}
.s-head__index b { color: var(--accent); font-weight: 400; }
.s-head__title { }
.s-head__aside { padding-bottom: 8px; }

/* ---------- Reveal animation ------------------------------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 1.05s var(--ease-out), transform 1.05s var(--ease-out); will-change: opacity, transform; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
.reveal-d4 { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* line-mask reveal for big headings */
.line-mask { overflow: hidden; display: block; }
.line-mask > span { display: block; transform: translateY(105%); transition: transform 1.1s var(--ease-out); }
.in .line-mask > span, .line-mask.in > span { transform: none; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 80;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gutter);
  transition: background 0.5s var(--ease), padding 0.5s var(--ease), border-color 0.5s var(--ease), backdrop-filter 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav--scrolled {
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  padding-block: 16px;
  border-bottom: 1px solid var(--rule);
}
.nav--hidden { transform: translateY(-100%); }
.nav__brand { display: flex; align-items: center; gap: 14px; }
.wordmark {
  width: 142px; height: 34px;
  background-color: var(--fg);
  -webkit-mask: url("../assets/stillmark_logo_white.svg") left center / contain no-repeat;
  mask: url("../assets/stillmark_logo_white.svg") left center / contain no-repeat;
  transition: background-color 0.5s var(--ease);
}
.nav__links { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 40px); }
.nav__link {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--fg-dim);
  position: relative; padding: 6px 0; transition: color 0.3s var(--ease);
}
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--accent); transition: width 0.4s var(--ease);
}
.nav__link:hover { color: var(--fg); }
.nav__link:hover::after { width: 100%; }
.nav__cta {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.13em;
  text-transform: uppercase; padding: 10px 20px; border-radius: 999px;
  border: 1px solid var(--rule-2); color: var(--fg);
  transition: all 0.35s var(--ease);
}
.nav__cta:hover { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.nav__menu-btn { display: none; }
.nav__link, .nav__cta { white-space: nowrap; }

@media (max-width: 1100px) {
  .nav__links { display: none; }
  .nav__menu-btn {
    display: flex; flex-direction: column; gap: 5px; padding: 8px;
  }
  .nav__menu-btn span { width: 24px; height: 1.5px; background: var(--fg); display: block; }
}

/* ============================================================
   PLACEHOLDER IMAGERY (tonal, on-brand)
   ============================================================ */
.media {
  position: relative; overflow: hidden;
  background: var(--ph-bg, var(--forest));
  isolation: isolate;
}
.media::before {
  content: ""; position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    var(--ph-angle, 135deg),
    rgba(255,255,255,0.05) 0px, rgba(255,255,255,0.05) 1px,
    transparent 1px, transparent 11px);
  z-index: 1;
}
.media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 120% at var(--ph-glow, 70% 30%), var(--ph-tint, rgba(63,180,146,0.4)) 0%, transparent 60%);
  mix-blend-mode: screen; z-index: 0;
}
.media__label {
  position: absolute; left: 20px; bottom: 18px; z-index: 3;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: rgba(255,255,255,0.78);
  display: flex; align-items: center; gap: 0.6em;
}
.media__label::before { content: ""; width: 8px; height: 8px; border: 1px solid rgba(255,255,255,0.5); border-radius: 50%; }
.media__corner {
  position: absolute; right: 18px; top: 16px; z-index: 3;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(255,255,255,0.45);
}
.media__img {
  position: absolute; inset: 0; z-index: 2;
  width: 100%; height: 100%; object-fit: cover; object-position: center;
}
.media__mark {
  position: absolute; z-index: 2; opacity: 0.16;
  background-color: #fff;
  -webkit-mask-position: center; mask-position: center;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-size: contain; mask-size: contain;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--invert-bg); color: var(--invert-fg); padding-top: clamp(80px,10vh,130px); padding-bottom: 40px; }
.footer a { color: var(--invert-fg); }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: clamp(48px,7vh,90px); border-bottom: 1px solid var(--invert-rule); }
.footer__big { font-family: var(--serif); font-size: clamp(30px, 4vw, 56px); line-height: 1.05; letter-spacing: -0.01em; max-width: 16ch; }
.footer__col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--invert-faint); margin: 0 0 18px; font-weight: 400; }
.footer__col a { display: block; padding: 7px 0; font-size: 15px; color: color-mix(in oklab, var(--invert-fg) 80%, transparent); transition: color 0.3s var(--ease); }
.footer__col a:hover { color: var(--invert-accent); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 32px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--invert-faint); flex-wrap: wrap; gap: 16px; }
.footer .wordmark { background-color: var(--invert-fg); }

@media (max-width: 860px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__big { grid-column: 1 / -1; }
  .s-head { grid-template-columns: 1fr; }
}

/* ============================================================
   TWEAKS PANEL
   ============================================================ */
#tweaks-root { position: fixed; right: 22px; bottom: 22px; z-index: 200; font-family: var(--sans); }
.tw-panel {
  width: 280px; background: var(--panel); color: var(--fg);
  border: 1px solid var(--rule-2); border-radius: 14px;
  box-shadow: 0 24px 60px -20px rgba(0,0,0,0.5);
  padding: 18px; transform-origin: bottom right;
}
.tw-panel.hidden { display: none; }
.tw-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.tw-head h3 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--fg-faint); margin: 0; font-weight: 400; }
.tw-close { color: var(--fg-faint); font-size: 18px; line-height: 1; padding: 2px 6px; }
.tw-close:hover { color: var(--fg); }
.tw-group { margin-bottom: 18px; }
.tw-group:last-child { margin-bottom: 0; }
.tw-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-faint); margin-bottom: 9px; }
.tw-seg { display: flex; gap: 6px; }
.tw-seg--wrap { flex-wrap: wrap; }
.tw-seg--wrap button { flex: 1 1 28%; }
.tw-seg button {
  flex: 1; padding: 9px 6px; border-radius: 8px; border: 1px solid var(--rule);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--fg-dim); transition: all 0.25s var(--ease);
}
.tw-seg button:hover { border-color: var(--rule-2); }
.tw-seg button.active { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.tw-swatches { display: flex; gap: 9px; }
.tw-swatch { width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--rule); transition: transform 0.2s var(--ease), border-color 0.2s var(--ease); }
.tw-swatch:hover { transform: scale(1.08); }
.tw-swatch.active { border-color: var(--fg); }

/* Slim footer (v1) */
.footer{padding-top:clamp(48px,7vh,80px);padding-bottom:clamp(28px,4vh,40px)}
.footer__bottom{padding-top:0;gap:24px 40px;flex-wrap:wrap}
.footer__links{display:flex;gap:8px 32px;flex-wrap:wrap}
.footer__links a{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--invert-fg);transition:color .3s var(--ease)}
.footer__links a:hover{color:var(--invert-accent)}
.footer__id{display:flex;align-items:center;gap:20px 28px;flex-wrap:wrap}

.footer__bottom{border-bottom:1px solid var(--invert-rule);padding-bottom:clamp(28px,4vh,40px)}
.footer__legal{display:flex;justify-content:space-between;align-items:center;gap:12px 32px;flex-wrap:wrap;padding-top:24px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--invert-faint)}
.footer__legal nav{display:flex;gap:8px 28px;flex-wrap:wrap}
.footer__legal nav[hidden]{display:none}
.footer__legal a{color:var(--invert-faint);transition:color .3s var(--ease)}
.footer__legal a:hover{color:var(--invert-accent)}

.footer__mark{display:block;padding-bottom:clamp(40px,6vh,72px);border-bottom:1px solid var(--invert-rule);margin-bottom:clamp(28px,4vh,40px)}
.footer .footer__mark .wordmark{display:block;width:120px;height:28px}
.footer__bottom{justify-content:flex-end;border-bottom:0;padding-bottom:0}
.footer__legal{border-top:1px solid var(--invert-rule);margin-top:clamp(28px,4vh,40px)}

.footer__mark{padding:0;border:0;margin:0;display:flex}
.footer__bottom{justify-content:space-between}
.footer__mark .wordmark{transform:translateY(-2px)}

/* Theme toggle */
.theme-tg{width:44px;height:44px;display:grid;place-items:center;border:0;background:none;cursor:pointer;color:var(--fg);margin-left:4px}
.theme-tg__dot{width:16px;height:16px;border-radius:50%;border:1.5px solid currentColor;background:linear-gradient(90deg,currentColor 50%,transparent 50%);transition:transform .5s cubic-bezier(.5,.05,.1,1)}
[data-theme="light"] .nav .wordmark{background-color:var(--accent)}
[data-theme="light"] .theme-tg__dot{transform:rotate(180deg)}
.theme-tg:hover{color:var(--accent)}
.theme-tg:focus-visible{outline:1px solid var(--fg);outline-offset:2px}