/* mgbstuff.dev · Charcoal and Spark (from eleven28 preview v1) · colors only through palette variables */

/* Dark mode: same palette, flipped. Follows the device unless the switch is used. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: var(--color-deep);
    --color-surface: var(--primary-950);
    --color-border: var(--primary-800);
    --color-text: var(--primary-200);
    --color-heading: var(--primary-50);
    --color-text-muted: var(--primary-400);
    --color-link: var(--primary-200);
    --color-primary: var(--primary-100);
    --color-primary-hover: var(--primary-300);
    --color-on-primary: var(--color-deep);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --color-bg: var(--color-deep);
  --color-surface: var(--primary-950);
  --color-border: var(--primary-800);
  --color-text: var(--primary-200);
  --color-heading: var(--primary-50);
  --color-text-muted: var(--primary-400);
  --color-link: var(--primary-200);
  --color-primary: var(--primary-100);
  --color-primary-hover: var(--primary-300);
  --color-on-primary: var(--color-deep);
  color-scheme: dark;
}

:root {
  --font-head: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --spark: var(--color-accent);
  --wrap: 1080px;
  --chip: 14px; /* the flint chip on cards, matching the icons */
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font: 400 1rem/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-head); color: var(--color-heading); line-height: 1.15; margin: 0; }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); font-weight: 600; letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; font-weight: 600; }
p { margin: 0; }
a { color: var(--color-link); }
ul { list-style: none; margin: 0; padding: 0; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
.mono { font-family: var(--font-mono); font-size: 0.85rem; }
.muted { color: var(--color-text-muted); }
.ic { width: 1em; height: 1em; vertical-align: -0.15em; flex: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

/* Header */
.site-header { border-bottom: 1px solid var(--color-border); }
.header-row { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 1rem; }
.wordmark {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font: 600 1.1rem var(--font-head); color: var(--color-heading); text-decoration: none;
}
.wordmark .ic { width: 24px; height: 24px; }
.wordmark .dot { color: var(--color-text-muted); }
.nav { display: flex; align-items: center; gap: 1.25rem; font-size: 0.95rem; }
.nav a { color: var(--color-text); text-decoration: none; }
.nav a:hover { color: var(--color-heading); text-decoration: underline; text-underline-offset: 4px; }
.theme-toggle {
  display: inline-grid; place-items: center; width: 40px; height: 40px;
  background: none; border: 1px solid var(--color-border); color: var(--color-heading);
  font: inherit; cursor: pointer;
}
.theme-toggle .ic { width: 20px; height: 20px; }
.theme-toggle:hover { border-color: var(--color-heading); }
@media (max-width: 479px) { .nav a { display: none; } }

/* Bands */
.band { padding: 56px 0; }
.band--plain { background: var(--color-bg); }
.band--tint { background: var(--color-surface); }
.band--deep { background: var(--primary-950); color: var(--primary-200); }
.band--deep h2 { color: var(--primary-50); }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.25rem 1rem; margin-bottom: 24px; }

/* Terminal intro: compact, one line */
.band.intro { padding: 28px 0 8px; }
.prompt-path { font: 400 0.8rem var(--font-mono); color: var(--color-text-muted); margin-bottom: 4px; }
.terminal-line {
  font: 500 clamp(1.35rem, 1rem + 2.2vw, 2.25rem)/1.3 var(--font-mono);
  letter-spacing: -0.01em; min-height: 1.3em;
}
.caret { color: var(--color-text-muted); margin-right: 0.35em; }
.cursor {
  display: inline-block; width: 0.55em; height: 0.18em; margin-left: 0.12em;
  background: var(--spark); vertical-align: baseline;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

/* Shared card shape: one chipped top-right corner, like the icons */
.card, .tile {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, calc(100% - var(--chip)) 0, 100% var(--chip), 100% 100%, 0 100%);
}
.card::after, .tile::after {
  content: ""; position: absolute; top: -1px; left: calc(100% - var(--chip));
  width: calc(var(--chip) * 1.4142 + 2px); height: 2px; background: var(--color-border);
  transform-origin: 0 0; transform: rotate(45deg);
}
.card:hover::after { background: var(--color-heading); }
.status {
  display: inline-block; font: 500 0.72rem/1 var(--font-mono); text-transform: lowercase;
  color: var(--color-text-muted); border: 1px solid var(--color-border); padding: 5px 7px;
}

/* Topics: the star */
.topic-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.card { padding: 22px 20px 20px; display: grid; gap: 8px; align-content: start; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--color-heading); }
.ic-card { width: 32px; height: 32px; color: var(--color-heading); margin-bottom: 6px; }
.card p { color: var(--color-text); }
.card .status { justify-self: start; margin-top: 6px; }
.card--wide { grid-template-columns: auto 1fr; align-items: center; column-gap: 16px; }
.card--wide .ic-card { margin: 0; }
.card--wide .status { grid-column: 1 / -1; }
@media (min-width: 640px) {
  .topic-grid { grid-template-columns: repeat(2, 1fr); }
  .card--wide { grid-column: 1 / -1; grid-template-columns: auto 1fr auto; }
  .card--wide .status { grid-column: auto; margin: 0; }
}
@media (min-width: 960px) {
  .topic-grid { grid-template-columns: repeat(4, 1fr); }
  .card--lead { min-height: 220px; }
}
@media (prefers-reduced-motion: no-preference) { .card:hover { transform: translateY(-2px); } }

/* Experiments: smaller tiles */
.exp-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.tile { background: var(--color-bg); padding: 16px; display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; align-items: start; }
.tile > .ic { width: 24px; height: 24px; color: var(--color-heading); margin-top: 2px; }
.tile h3 { font-size: 1rem; }
.tile p { font-size: 0.92rem; color: var(--color-text-muted); }
.tile .status { grid-column: 2; justify-self: start; margin-top: 8px; }
.tile--next { background: transparent; border-style: dashed; }
.tile--next::after { display: none; }
@media (min-width: 720px) { .exp-grid { grid-template-columns: repeat(3, 1fr); } }

/* See my web work band */
.web-work { padding: 44px 0; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.cta-row p { color: var(--primary-300); margin-top: 6px; }
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 12px 20px; font: 600 1rem var(--font-body); text-decoration: none;
  background: var(--primary-100); color: var(--color-deep);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}
.btn:hover { background: var(--primary-300); }
.btn .ic { width: 20px; height: 20px; }
@media (prefers-reduced-motion: no-preference) { .btn:hover .ic { translate: 3px 0; } .btn .ic { transition: translate .15s; } }

/* Footer */
.site-footer { background: var(--color-deep); color: var(--primary-300); padding: 32px 0 40px; border-top: 1px solid var(--primary-800); }
.footer-row { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; }
.site-footer .mono { color: var(--primary-100); }
.site-footer .muted { color: var(--primary-400); }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 0.92rem; }
.footer-links a, .footer-links .placeholder { color: var(--primary-200); display: inline-flex; align-items: center; gap: 0.45rem; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; text-underline-offset: 4px; }
.footer-links .placeholder { font-style: italic; color: var(--primary-400); }
.theme-toggle--text { width: auto; height: auto; padding: 6px 10px; gap: 0.45rem; display: inline-flex; color: var(--primary-200); border-color: var(--primary-800); font-size: 0.92rem; }
.theme-toggle--text .ic { width: 1em; height: 1em; }
.site-footer .ic { --spark: var(--color-accent); }