/* ═══════════════════════════════════════════
   DevOfCodes — shared stylesheet
   ═══════════════════════════════════════════ */
:root {
  --bg-base:        #080A0F;
  --bg-surface:     #0E1117;
  --bg-elevated:    #161B24;
  --border:         rgba(255, 255, 255, 0.07);
  --border-bright:  rgba(255, 255, 255, 0.15);

  --text-primary:   #E8EAF0;
  --text-secondary: #8B93A1;
  --text-muted:     #5C6573;

  --accent-cyan:    #00C8FF;
  --accent-amber:   #F59E0B;
  --accent-green:   #10B981;
  --accent-rose:    #F43F5E;

  --font-display:   'Syne', sans-serif;
  --font-body:      'Literata', serif;
  --font-mono:      'JetBrains Mono', monospace;

  --radius: 10px;
  --container: 1180px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
/* Phones let you pan into anything wider than the screen even with overflow-x on the viewport,
   so body clips itself; clip (not hidden) on html stops body becoming a scroll container. */
html { scroll-behavior: smooth; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background-color: var(--bg-base);
  background-image: radial-gradient(circle, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  overflow-x: clip;
}

a { text-decoration: none; color: inherit; }
button { font-family: inherit; }
img { max-width: 100%; display: block; }
::selection { background: rgba(0, 200, 255, 0.25); color: var(--text-primary); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.container--narrow { max-width: 760px; }

/* ── Typography ── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--accent-cyan); opacity: 0.7; }

.section-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--text-primary);
  text-wrap: balance;
}
.section-sub {
  margin-top: 1rem;
  max-width: 560px;
  color: var(--text-secondary);
}
.prose p + p { margin-top: 1.1rem; }
.prose a { color: var(--accent-cyan); border-bottom: 1px solid rgba(0,200,255,0.3); }
.prose a:hover { border-bottom-color: var(--accent-cyan); }
.prose em { color: var(--text-primary); }
.mono { font-family: var(--font-mono); }

/* ── Scroll reveal ── */
.fade-up { opacity: 0; transform: translateY(22px); transition: opacity 600ms ease, transform 600ms ease; }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .fade-up { opacity: 1; transform: none; transition: none; } }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 500;
  padding: 0.8rem 1.4rem; border-radius: 6px; border: 1px solid transparent;
  cursor: pointer; transition: transform 160ms ease, opacity 160ms ease, border-color 160ms, color 160ms, background 160ms;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-amber { background: var(--accent-amber); color: var(--bg-base); }
.btn-amber:hover { opacity: 0.88; }
.btn-ghost { background: rgba(8,10,15,0.35); color: var(--text-primary); border-color: var(--border-bright); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.btn-cyan { background: transparent; color: var(--accent-cyan); border-color: var(--accent-cyan); }
.btn-cyan:hover { background: var(--accent-cyan); color: var(--bg-base); }

/* ── Navigation ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0.9rem 0;
  border-bottom: 1px solid transparent;
  transition: background 300ms, border-color 300ms;
}
.nav.scrolled {
  background: rgba(8, 10, 15, 0.82);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand { display: flex; align-items: center; gap: 0.6rem; }
.nav-brand svg { width: 28px; height: 28px; }
.nav-brand span { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; letter-spacing: 0.02em; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-link { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--text-secondary); transition: color 200ms; }
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--text-primary); }
.nav-cta {
  border: 1px solid var(--accent-cyan); color: var(--accent-cyan);
  padding: 0.45rem 1rem; border-radius: 4px;
  font-family: var(--font-mono); font-size: 0.78rem; background: transparent;
  transition: background 200ms, color 200ms;
}
.nav-cta:hover { background: var(--accent-cyan); color: var(--bg-base); }
.nav-hamburger { display: none; background: none; border: none; cursor: pointer; padding: 0.25rem; }
.nav-hamburger svg { width: 24px; height: 24px; }

.mobile-nav-overlay {
  display: none; position: fixed; inset: 0; z-index: 150;
  background: rgba(8, 10, 15, 0.97);
  flex-direction: column; align-items: center; justify-content: center; gap: 2rem;
}
.mobile-nav-overlay.active { display: flex; }
.mobile-nav-overlay a {
  font-family: var(--font-display); font-size: 1.6rem; color: var(--text-secondary); transition: color 200ms;
}
.mobile-nav-overlay a:hover { color: var(--text-primary); }
.mobile-nav-close {
  position: absolute; top: 1.4rem; right: 1.5rem;
  font-family: var(--font-mono); font-size: 1.6rem; color: var(--text-muted);
  background: none; border: none; cursor: pointer;
}
@media (max-width: 820px) {
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
}

/* ── Shader surfaces ── */
.shader-surface { position: relative; overflow: hidden; isolation: isolate; }
.shader-surface canvas {
  position: absolute; inset: 0; width: 100% !important; height: 100% !important;
  display: block; opacity: 0; transition: opacity 900ms ease;
}
.shader-surface.shader-ready canvas { opacity: 1; }
.shader-fallback { position: absolute; inset: 0; z-index: 0; }

/* ── Status pills ── */
.pill {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.3rem 0.65rem; border-radius: 999px; border: 1px solid var(--border-bright);
  color: var(--text-secondary); background: rgba(8,10,15,0.5);
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill--green { color: var(--accent-green); border-color: rgba(16,185,129,0.4); }
.pill--amber { color: var(--accent-amber); border-color: rgba(245,158,11,0.4); }
.pill--cyan  { color: var(--accent-cyan);  border-color: rgba(0,200,255,0.4); }
.pill--muted { color: var(--text-secondary); }

/* ── Footer ── */
.site-footer { border-top: 1px solid var(--border); padding: 3.5rem 0 2rem; margin-top: 4rem; background: var(--bg-base); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
.footer-tagline { color: var(--text-secondary); font-size: 0.95rem; margin-top: 0.9rem; max-width: 320px; }
.footer-copyright { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); margin-top: 1rem; }
.footer-heading { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-muted); display: block; margin-bottom: 0.9rem; }
.footer-links-col a { display: block; color: var(--text-secondary); font-size: 0.95rem; padding: 0.2rem 0; transition: color 200ms; }
.footer-links-col a:hover { color: var(--text-primary); }
.footer-links-col svg { width: 14px; height: 14px; fill: currentColor; vertical-align: -2px; margin-right: 0.45rem; }
.footer-bottom-bar {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted);
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }

/* ── Simple article pages (about, log, plan) ── */
.page { padding: 9rem 0 4rem; }
.page-header { margin-bottom: 3rem; }
.page-header .section-headline { font-size: clamp(2.2rem, 5vw, 3.4rem); }
@media (max-width: 360px) {
  /* long words like "implementation" outgrow the 2.2rem floor on the narrowest phones */
  .page-header .section-headline { font-size: calc(10vw - 0.25rem); }
}
.page-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); margin-top: 1rem; letter-spacing: 0.04em; }

/* ── Forms ── */
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.45rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: var(--bg-base); border: 1px solid var(--border-bright); border-radius: 6px;
  padding: 0.75rem 0.9rem; color: var(--text-primary); font-family: var(--font-body); font-size: 0.98rem;
  transition: border-color 200ms, box-shadow 200ms;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(0,200,255,0.12);
}
.form-group input.error, .form-group textarea.error { border-color: var(--accent-rose); }
.form-error { display: none; margin-top: 0.8rem; font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent-rose); }
.form-success { display: none; padding: 1.5rem; border: 1px solid rgba(16,185,129,0.35); border-radius: var(--radius); background: rgba(16,185,129,0.06); }
.form-success h3 { font-family: var(--font-display); margin-bottom: 0.4rem; }
.form-success p { color: var(--text-secondary); font-size: 0.95rem; }

:focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 3px; }