/* ============================================================
   Calvin Riley — AI Orchestrator Portfolio
   Single shared stylesheet. Static, no build step (GitHub Pages friendly).
   Design rules live in CLAUDE.md — keep this file and that file in sync.
   ============================================================ */

:root {
  /* Core palette — sleek dark "AI PM" theme with a Meridian nod (forest + gold) */
  --bg:        #0d1117;   /* near-black slate */
  --bg-2:      #131a23;   /* raised surface */
  --bg-3:      #1b232e;   /* card */
  --border:    #26303c;
  --text:      #e8edf2;   /* primary */
  --text-dim:  #9fb0c0;   /* secondary */
  --text-faint:#6b7a89;
  --accent:    #5fae7e;   /* forest-derived green */
  --accent-2:  #c9a86a;   /* warm gold */
  --accent-soft: rgba(95,174,126,0.12);
  --danger:    #d98a6a;

  --maxw: 1080px;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0,0,0,0.35);
  --font-head: "Georgia", "Times New Roman", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13,17,23,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav .brand { font-weight: 700; letter-spacing: 0.2px; color: var(--text); }
.nav .brand span { color: var(--accent); }
.nav .links a { color: var(--text-dim); margin-left: 22px; font-size: 0.92rem; }
.nav .links a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 620px){ .nav .links a { margin-left: 14px; font-size: 0.82rem; } }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 64px; border-bottom: 1px solid var(--border); }
.hero .eyebrow {
  display: inline-block; font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-soft); padding: 6px 12px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-family: var(--font-head); font-size: 2.9rem; line-height: 1.12; margin: 0 0 16px; }
.hero h1 .hl { color: var(--accent); }
.hero .lead { font-size: 1.2rem; color: var(--text-dim); max-width: 680px; margin: 0 0 28px; }
.hero .cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 620px){ .hero h1 { font-size: 2.1rem; } .hero .lead { font-size: 1.05rem; } }

.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid var(--accent); color: #0d1117; background: var(--accent); transition: transform .08s ease, background .2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); background: #6fbf8d; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

/* ---------- Sections ---------- */
section { padding: 64px 0; border-bottom: 1px solid var(--border); }
.section-label { font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent-2); margin: 0 0 10px; }
h2.sec { font-family: var(--font-head); font-size: 1.9rem; margin: 0 0 26px; }
h3 { font-family: var(--font-head); font-size: 1.3rem; margin: 28px 0 10px; }
p { color: var(--text); }
.muted { color: var(--text-dim); }

/* ---------- About / pillars ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; }
.pillar { background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.pillar h4 { margin: 0 0 8px; color: var(--accent); font-size: 1.02rem; }
.pillar p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }
@media (max-width: 760px){ .pillars { grid-template-columns: 1fr; } }

/* ---------- Project cards ---------- */
.projects { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card {
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; display: flex; flex-direction: column; transition: border-color .2s, transform .08s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .tag {
  align-self: flex-start; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; margin-bottom: 14px; border: 1px solid var(--border); color: var(--text-dim);
}
.card .tag.live { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.card .tag.progress { color: var(--accent-2); border-color: var(--accent-2); }
.card h3 { margin: 0 0 8px; font-size: 1.35rem; }
.card .role { color: var(--text-faint); font-size: 0.85rem; margin: 0 0 12px; }
.card p { color: var(--text-dim); font-size: 0.96rem; margin: 0 0 18px; flex-grow: 1; }
.card .more { color: var(--accent); font-weight: 600; font-size: 0.92rem; }
.card.flagship { grid-column: 1 / -1; border-color: #33404e; }
@media (max-width: 760px){ .projects { grid-template-columns: 1fr; } }

/* ---------- Case study page ---------- */
.cs-hero { padding: 70px 0 36px; border-bottom: 1px solid var(--border); }
.cs-hero .eyebrow { color: var(--accent-2); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; }
.cs-hero h1 { font-family: var(--font-head); font-size: 2.5rem; margin: 12px 0 8px; }
.cs-hero .sub { color: var(--text-dim); font-size: 1.15rem; max-width: 720px; }

/* TL;DR executive hook box */
.tldr {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-3));
  border: 1px solid var(--border); border-left: 4px solid var(--accent);
  border-radius: var(--radius); padding: 26px 28px; margin: 30px 0 8px;
}
.tldr h2 { font-family: var(--font-head); font-size: 1.2rem; margin: 0 0 12px; color: var(--accent); }
.tldr p { margin: 0 0 16px; }
.tldr .facts { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px 28px; margin: 0; padding: 0; list-style: none; }
.tldr .facts li { font-size: 0.92rem; color: var(--text-dim); }
.tldr .facts li b { color: var(--text); display: block; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 2px; color: var(--accent-2); }
@media (max-width: 620px){ .tldr .facts { grid-template-columns: 1fr; } }

/* Case study body */
.cs-body { padding: 20px 0 50px; }
.cs-body section { border: none; padding: 30px 0; border-top: 1px solid var(--border); }
.cs-body section:first-child { border-top: none; }
.cs-body h2 { font-family: var(--font-head); font-size: 1.5rem; margin: 0 0 14px; display: flex; align-items: baseline; gap: 12px; }
.cs-body h2 .num { color: var(--accent); font-size: 1rem; font-weight: 700; }
.cs-body ul { padding-left: 20px; }
.cs-body li { margin: 6px 0; color: var(--text); }

/* callouts + figures */
.callout { background: var(--accent-soft); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 10px; padding: 16px 18px; margin: 18px 0; color: var(--text-dim); }
.callout b { color: var(--text); }
.figure { background: var(--bg-2); border: 1px dashed var(--border); border-radius: 12px; padding: 22px; margin: 20px 0; text-align: center; color: var(--text-faint); }
.figure .cap { font-size: 0.85rem; margin-top: 10px; color: var(--text-dim); }
.figure.embed { padding: 0; overflow: hidden; border-style: solid; background: #fff; }
.figure.embed iframe { width: 100%; height: 520px; border: 0; display: block; }
.figure.embed .cap { padding: 12px 16px; margin: 0; background: var(--bg-2); color: var(--text-dim); text-align: left; border-top: 1px solid var(--border); }
@media (max-width: 620px){ .figure.embed iframe { height: 360px; } }

/* phone-screenshot gallery */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
.shot { background: var(--bg-2); border: 1px solid var(--border); border-radius: 14px; padding: 10px; }
.shot img { width: 100%; height: auto; display: block; border-radius: 8px; border: 1px solid var(--border); }
.shot .cap { font-size: 0.82rem; color: var(--text-dim); margin-top: 10px; text-align: center; }
.shot img:not([src]), .shot img[src=""] { min-height: 280px; }
@media (max-width: 760px){ .shots { grid-template-columns: 1fr; max-width: 360px; margin-left: auto; margin-right: auto; } }

/* decision / trade-off table */
.tbl { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 0.93rem; }
.tbl th, .tbl td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.tbl th { color: var(--accent-2); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.tbl td { color: var(--text-dim); }
.tbl td b { color: var(--text); }

/* KPI grid */
.kpis { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin: 18px 0; }
.kpi { background: var(--bg-3); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.kpi .n { font-size: 1.5rem; font-weight: 700; color: var(--accent); font-family: var(--font-head); }
.kpi .l { font-size: 0.85rem; color: var(--text-dim); margin-top: 4px; }
@media (max-width: 760px){ .kpis { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.footer { padding: 56px 0; text-align: center; }
.footer h2 { font-family: var(--font-head); font-size: 1.8rem; margin: 0 0 10px; }
.footer p { color: var(--text-dim); margin: 0 0 22px; }
.footer .contacts a { color: var(--text); margin: 0 12px; border-bottom: 1px solid var(--border); padding-bottom: 2px; }
.footer .contacts a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.backlink { display: inline-block; margin: 24px 0 0; color: var(--text-dim); font-size: 0.9rem; }

.tiny { color: var(--text-faint); font-size: 0.8rem; }