/* ============================================================
   coopersellers.com — "Field Notes"
   Dark-warm default · full light mode · outdoors-meets-code
   ============================================================ */

:root {
  --bg:      #10151a;
  --bg2:     #151c23;
  --panel:   #1a232c;
  --panel-2: #1f2a35;
  --line:    #263340;
  --line-soft: #1d2833;

  --fg:      #e9eef2;
  --mid:     #9fb0bd;
  --dim:     #64788a;

  --amber:     #e8b45a;
  --amber-ink: #211603;
  --amber-soft: rgba(232, 180, 90, .32);
  --amber-glow: rgba(232, 180, 90, .15);
  --green:   #7ec97a;
  --sky:     #6db3d8;

  --topo:    #2a3a49;

  --radius: 14px;
  --shell: 1020px;

  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:      #faf7f1;
    --bg2:     #f3eee5;
    --panel:   #ffffff;
    --panel-2: #faf6ee;
    --line:    #e2d9c9;
    --line-soft: #ece5d8;

    --fg:      #241f17;
    --mid:     #5b5348;
    --dim:     #8a8072;

    --amber:     #a86f1f;
    --amber-ink: #ffffff;
    --amber-soft: rgba(200, 143, 44, .30);
    --amber-glow: rgba(200, 143, 44, .12);
    --green:   #3e7c3a;
    --sky:     #2a6b8f;

    --topo:    #ddd2bd;

    color-scheme: light;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding: 0 1.5rem; }

a { color: var(--amber); }

.skip {
  position: absolute; left: -9999px;
  background: var(--amber); color: var(--amber-ink);
  padding: .6rem 1rem; border-radius: 8px; z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 6px; }

/* ---------------- header ---------------- */

.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.head-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 1rem; }

.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--fg); font-weight: 650; }
.brand-mark {
  font-family: var(--mono); font-size: .82rem; font-weight: 700;
  color: var(--amber); border: 1px solid var(--line);
  background: var(--panel);
  padding: .25rem .45rem; border-radius: 7px; letter-spacing: .02em;
}
.brand-name { letter-spacing: -.01em; }

.head-nav { display: flex; align-items: center; gap: 1.35rem; }
.head-nav a { color: var(--mid); text-decoration: none; font-size: .92rem; font-weight: 500; transition: color .15s ease; }
.head-nav a:hover { color: var(--fg); }

.btn-sm {
  border: 1px solid var(--line); border-radius: 999px;
  padding: .42rem .95rem; color: var(--fg) !important;
}
.btn-sm:hover { border-color: var(--amber); color: var(--amber) !important; }

@media (max-width: 820px) {
  .head-nav a:not(.btn-sm) { display: none; }
  .brand-name { display: none; }
}

/* ---------------- hero ---------------- */

.hero { position: relative; padding: clamp(3.5rem, 8vw, 6.5rem) 0 3rem; overflow: hidden; }

.topo { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .5; pointer-events: none; }
.topo path { stroke: var(--topo); }

.hero-inner {
  position: relative;
  display: grid; grid-template-columns: minmax(0,1fr) auto;
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}

.loc {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--mono); font-size: .76rem; color: var(--amber);
  letter-spacing: .1em; text-transform: uppercase; margin: 0 0 1.5rem;
}
.loc::before { content: "◉"; }
.loc small { color: var(--dim); text-transform: none; letter-spacing: .02em; font-size: 1em; }

h1 {
  margin: 0 0 1.15rem;
  font-size: clamp(2.4rem, 6vw, 4.1rem);
  line-height: 1.05;
  letter-spacing: -.033em;
  font-weight: 750;
  text-wrap: balance;
}

/* highlighter stroke that survives line wraps */
.hl {
  background: linear-gradient(120deg, var(--amber-soft), var(--amber-soft)) no-repeat 0 76% / 100% .36em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  padding: 0 .06em;
}

.lede { margin: 0 0 1.1rem; font-size: clamp(1.05rem, 1.7vw, 1.22rem); color: var(--fg); max-width: 40rem; }
.lede-sub { font-size: clamp(1rem, 1.5vw, 1.08rem); color: var(--mid); margin-bottom: 2rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; }

.btn {
  display: inline-block; text-decoration: none; font-weight: 650; font-size: .95rem;
  padding: .72rem 1.4rem; border-radius: 999px; border: 1px solid transparent;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--amber); color: var(--amber-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--amber) 86%, #fff); }
.btn-ghost { border-color: var(--line); color: var(--fg); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* portrait — pinned like a field-note photo */
.hero-portrait { display: flex; justify-content: center; }
.portrait {
  position: relative; margin: 0;
  width: clamp(180px, 23vw, 250px); aspect-ratio: 1;
  border-radius: 4px 20px 20px 20px; overflow: visible;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 120% at 30% 0%, var(--amber-glow), transparent 60%),
    var(--panel);
  display: grid; place-items: center;
  box-shadow: 0 28px 70px -28px rgba(0,0,0,.55);
}
.portrait::before {
  content: ""; position: absolute; top: -8px; left: 18px; width: 15px; height: 15px;
  border-radius: 50%; background: var(--bg); border: 3px solid var(--amber); z-index: 2;
}
.portrait img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; border-radius: inherit;
}
.portrait-fallback {
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(3rem, 7vw, 4.4rem);
  color: color-mix(in srgb, var(--amber) 70%, transparent);
  letter-spacing: -.04em;
}

@media (max-width: 820px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-portrait { order: -1; justify-content: flex-start; }
}

/* waypoint trail */
.trail {
  position: relative;
  margin: clamp(2.75rem, 6vw, 4rem) 0 0;
  display: flex; align-items: flex-start; flex-wrap: wrap; row-gap: 1.2rem;
}
.wp { display: flex; align-items: flex-start; }
.wp .pt { text-align: center; }
.wp .dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--panel); border: 2px solid var(--dim);
  margin: 0 auto .45rem;
}
.wp:first-child .dot { border-color: var(--green); background: var(--green); }
.wp:last-child .dot {
  border-color: var(--amber); background: var(--amber);
  box-shadow: 0 0 0 5px var(--amber-glow);
}
.wp .lbl { font-family: var(--mono); font-size: .68rem; color: var(--dim); letter-spacing: .04em; white-space: nowrap; }
.wp:last-child .lbl { color: var(--amber); }
.seg {
  width: clamp(16px, 4.5vw, 54px); height: 2px; margin: 5px .5rem 0;
  background: repeating-linear-gradient(90deg, var(--dim) 0 5px, transparent 5px 10px);
  opacity: .55;
}

/* ---------------- bands ---------------- */

.band { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.band-alt { background: var(--bg2); border-block: 1px solid var(--line-soft); }
.band + .band { border-top: 1px solid var(--line-soft); }

.kicker {
  font-family: var(--mono); font-size: .73rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--amber); margin: 0 0 1rem;
}

h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(1.55rem, 3.6vw, 2.25rem);
  letter-spacing: -.026em; line-height: 1.18; font-weight: 720;
  text-wrap: balance;
}

.section-lede { color: var(--mid); max-width: 44rem; margin: 0 0 2.25rem; }

/* ---------------- prose ---------------- */

.prose { max-width: 63ch; }
.prose p {
  margin: 0 0 1.15rem;
  color: var(--mid);
  font-size: clamp(1rem, 1.5vw, 1.07rem);
  line-height: 1.72;
}
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--fg); font-weight: 620; }

.prose-lead {
  color: var(--fg) !important;
  font-size: clamp(1.12rem, 2vw, 1.32rem) !important;
  line-height: 1.5 !important;
  letter-spacing: -.015em;
  font-weight: 560;
}

/* understated company run-on */
.companies {
  margin: 2.5rem 0 0; padding-top: 1.4rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: .8rem; line-height: 1.9;
  color: var(--dim); max-width: 63ch;
}
.companies span {
  display: block; text-transform: uppercase; letter-spacing: .14em;
  font-size: .68rem; color: var(--amber); margin-bottom: .35rem;
}

/* ---------------- note cards (pinned) ---------------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.1rem; margin-top: 2.25rem; }

.card {
  position: relative;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 4px var(--radius) var(--radius) var(--radius);
  padding: 1.5rem;
  transition: border-color .18s ease, transform .18s ease;
}
.card::before {
  content: ""; position: absolute; top: -7px; left: 16px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--bg); border: 3px solid var(--sky);
}
.card:nth-child(2)::before { border-color: var(--green); }
.card:nth-child(3)::before { border-color: var(--amber); }
.card:hover { border-color: color-mix(in srgb, var(--amber) 45%, var(--line)); transform: translateY(-3px); }
.card h3 { margin: 0 0 .55rem; font-size: 1.02rem; font-weight: 660; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--mid); font-size: .93rem; }

/* ---------------- life ---------------- */

.life { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }

.life-list { list-style: none; margin: .35rem 0 0; padding: 0; display: grid; gap: .55rem; }
.life-list li {
  display: flex; align-items: center; gap: .7rem;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: .7rem .9rem;
  font-size: .92rem; color: var(--mid);
}
.life-ico { font-size: 1.05rem; line-height: 1; }

@media (max-width: 820px) { .life { grid-template-columns: 1fr; } }

/* ---------------- projects ---------------- */

.projects { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1.1rem; margin-top: 2.25rem; }

.project {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 4px var(--radius) var(--radius) var(--radius);
  padding: 1.6rem;
  transition: border-color .18s ease, transform .18s ease;
}
.project::before {
  content: ""; position: absolute; top: -7px; left: 16px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--bg); border: 3px solid var(--sky);
}
.project:nth-child(2)::before { border-color: var(--green); }
.project:nth-child(3)::before { border-color: var(--amber); }
.project:nth-child(4)::before { border-color: var(--dim); }
.project:hover { border-color: color-mix(in srgb, var(--amber) 45%, var(--line)); transform: translateY(-3px); }

.project-head { display: flex; align-items: center; justify-content: space-between; gap: .75rem; margin-bottom: .7rem; }
.project-head h3 { margin: 0; font-size: 1.1rem; font-weight: 680; letter-spacing: -.015em; }

.tag {
  flex-shrink: 0;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .05em; text-transform: uppercase;
  color: var(--dim); border: 1px solid var(--line); border-radius: 999px; padding: .2rem .55rem;
}
.tag-live { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 40%, var(--line)); }

.project > p { margin: 0 0 .9rem; color: var(--mid); font-size: .93rem; }

.project-meta {
  font-family: var(--mono); font-size: .76rem; color: var(--dim) !important;
  margin-top: auto !important; padding-top: .3rem;
}

.project-link {
  align-self: flex-start; margin-top: .85rem;
  font-size: .88rem; font-weight: 600; text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--amber) 40%, transparent);
  padding-bottom: 1px; transition: border-color .15s ease;
}
.project-link:hover { border-bottom-color: var(--amber); }

/* ---------------- stack ---------------- */

.stack { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem 2.5rem; margin-top: 2.25rem; }
.stack-group h3 {
  margin: 0 0 .85rem; font-size: .78rem; font-weight: 650;
  letter-spacing: .1em; text-transform: uppercase; color: var(--dim);
  font-family: var(--mono);
}
.tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .45rem; }
.tags li {
  font-size: .85rem; color: var(--mid);
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 999px; padding: .32rem .75rem;
  transition: color .15s ease, border-color .15s ease;
}
.tags li:hover { color: var(--fg); border-color: color-mix(in srgb, var(--amber) 45%, var(--line)); }

/* ---------------- cta ---------------- */

.band-cta { background: var(--bg2); border-top: 1px solid var(--line-soft); }
.cta-inner { text-align: center; }
.cta-inner h2 { margin-bottom: .6rem; }
.cta-inner > p { color: var(--mid); max-width: 36rem; margin: 0 auto 2rem; }
.cta-inner .hero-actions { justify-content: center; }

/* ---------------- footer ---------------- */

.site-foot { border-top: 1px solid var(--line-soft); padding: 2rem 0; }
.foot-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; }
.site-foot p { margin: 0; font-size: .85rem; color: var(--dim); }
.foot-note { font-family: var(--mono); font-size: .78rem !important; }