/* =========================================================
   LuisDeCastro.xyz — global styles
   Warm, literary, old-world. Edit freely.
   ========================================================= */

/* ---- Design tokens ---- */
:root {
  /* Color */
  --bg: #F5F0E8;
  --bg-tint: #EDE7DB;
  --text: #2C2416;
  --text-muted: #8C8070;
  --border: #DDD5C8;
  --accent: #7A2E2E;
  --accent-hover: #943838;

  /* Type */
  --font-display: "Libre Baskerville", "Iowan Old Style", Georgia, serif;
  --font-body:    "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --font-ui:      "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Layout */
  --site-max: 1200px;
  --read-max: 680px;
  --pad-x: clamp(1.5rem, 4vw, 3rem);

  /* Motion */
  --ease: cubic-bezier(.2, .6, .2, 1);
  --dur: 280ms;
}

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  /* barely-there paper texture */
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.17 0 0 0 0 0.14 0 0 0 0 0.09 0 0 0 0.04 0'/></filter><rect width='220' height='220' filter='url(%23n)'/></svg>");
  color: var(--text);
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1.65;
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

@media (max-width: 640px) {
  body { font-size: 17px; line-height: 1.6; }
}

img, svg { max-width: 100%; display: block; }

/* ---- Typography ---- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.005em;
  margin: 0 0 0.5em;
  color: var(--text);
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); letter-spacing: 0.01em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 1.9rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1.15em; text-wrap: pretty; }

small, .meta {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

blockquote {
  margin: 1.8em 0;
  padding: 0.2em 0 0.2em 1.25em;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: #4a3f2c;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 3.5rem auto;
  width: 40%;
}

/* ---- Links ---- */
a {
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(var(--accent-hover), var(--accent-hover));
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--dur) var(--ease), color var(--dur) var(--ease);
}
a:hover, a:focus-visible {
  color: var(--accent-hover);
  background-size: 100% 1px;
}
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

a:visited { color: #6e3535; }

/* ---- Layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--site-max);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.read {
  max-width: var(--read-max);
}

/* ---- Site header ---- */
.site-header {
  padding: 1.75rem 0 0.5rem;
}
.site-header .container {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.site-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--text);
  background: none;
}
.site-mark:hover { color: var(--accent); background: none; }

.site-nav {
  display: flex;
  gap: 1.75rem;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}
.site-nav a {
  color: var(--text);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding-bottom: 2px;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  color: var(--accent);
  background-size: 100% 1px;
}
.site-nav a[aria-current="page"] { background-size: 100% 1px; }

@media (max-width: 520px) {
  .site-header { padding-top: 1.25rem; }
  .site-header .container { gap: 0.75rem 1.5rem; }
  .site-nav { gap: 1.25rem; font-size: 0.88rem; }
}

/* ---- Main ---- */
main { flex: 1 0 auto; }

/* ---- Hero (landing) ---- */
.hero {
  padding: clamp(3.5rem, 12vh, 7rem) 0 clamp(2rem, 6vh, 3.5rem);
}
.hero__name {
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: 0.005em;
  margin-bottom: 0.4em;
}
.hero__tagline {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin: 0;
}

/* ---- Intro block ---- */
.intro {
  padding: 1rem 0 clamp(3rem, 8vh, 5rem);
}
.intro p {
  font-size: 1.12em;
  max-width: var(--read-max);
}

/* ---- Section doorways ---- */
.doorways {
  display: grid;
  gap: clamp(2rem, 6vh, 3.5rem);
  grid-template-columns: 1fr;
  padding: clamp(2rem, 6vh, 4rem) 0 clamp(4rem, 10vh, 6rem);
  border-top: 1px solid var(--border);
}
@media (min-width: 760px) {
  .doorways { grid-template-columns: 1fr 1fr; gap: 4rem; }
}
.doorway h2 {
  font-size: 1.6rem;
  margin-bottom: 0.35em;
}
.doorway h2 a { color: var(--text); background: none; }
.doorway h2 a:hover { color: var(--accent); }
.doorway p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 40ch;
}
.doorway__link {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}
.doorway__link::after {
  content: " →";
  transition: transform var(--dur) var(--ease);
  display: inline-block;
}
.doorway__link:hover::after { transform: translateX(3px); }

/* ---- Page header (subpages) ---- */
.page-head {
  padding: clamp(2.5rem, 8vh, 5rem) 0 clamp(1.5rem, 4vh, 2.5rem);
  border-bottom: 1px solid var(--border);
  margin-bottom: clamp(2rem, 5vh, 3rem);
}
.page-head h1 { margin-bottom: 0.3em; }
.page-head p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 54ch;
  margin: 0;
}

/* ---- Writing list ---- */
.writing-list {
  list-style: none;
  padding: 0;
  margin: 0 0 clamp(3rem, 8vh, 5rem);
}
.writing-list li + li { border-top: 1px solid var(--border); }
.writing-list a.entry {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem 2rem;
  padding: 1.4rem 0.5rem 1.4rem 0;
  background: none;
  color: var(--text);
  transition: background-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
  border-radius: 2px;
}
.writing-list a.entry:hover {
  background-color: var(--bg-tint);
  padding-left: 0.75rem;
}
.writing-list a.entry:hover .entry__title { color: var(--accent); }
.entry__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.25;
  transition: color var(--dur) var(--ease);
}
.entry__date {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-transform: uppercase;
  align-self: start;
  padding-top: 0.5em;
  white-space: nowrap;
}
.entry__desc {
  grid-column: 1 / -1;
  color: var(--text-muted);
  font-size: 0.98rem;
  margin: -0.2rem 0 0;
}

@media (max-width: 560px) {
  .writing-list a.entry { grid-template-columns: 1fr; }
  .entry__date { padding-top: 0.1em; }
}

/* ---- Article ---- */
.article {
  padding: clamp(2rem, 6vh, 4rem) 0 clamp(4rem, 10vh, 6rem);
}
.article__head {
  max-width: var(--read-max);
  margin-bottom: 2.5rem;
}
.article__title {
  font-size: clamp(2rem, 4.2vw, 3rem);
  margin-bottom: 0.4em;
}
.article__meta {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.article__body {
  max-width: var(--read-max);
  font-size: 1.08em;
  line-height: 1.72;
}
.article__body p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 3.1em;
  font-weight: 700;
  float: left;
  line-height: 0.92;
  margin: 0.08em 0.12em 0 -0.04em;
  color: var(--accent);
}
.article__body h2 {
  margin-top: 2.2em;
  font-size: 1.5rem;
}
.article__body h3 { margin-top: 1.8em; }
.article__back {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
  display: inline-block;
}
.article__back::before { content: "← "; }

/* ---- Projects ---- */
.projects-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  padding-bottom: clamp(3rem, 8vh, 5rem);
}
@media (min-width: 720px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
.project-card {
  display: block;
  padding: 1.75rem 1.75rem 1.5rem;
  background-color: var(--bg-tint);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
  background-image: none;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  background-color: #EAE2D2;
}
.project-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.2em;
}
.project-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin: 0;
}

.empty-state {
  padding: 2.5rem 0 4rem;
  color: var(--text-muted);
  font-style: italic;
  max-width: var(--read-max);
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--accent); }

.secret-dot {
  display: inline-block;
  cursor: default;
  transition: color var(--dur) var(--ease);
  padding: 0 1px;
}
.secret-dot:hover { color: var(--accent); }

.aphorism {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translate(-50%, 1rem);
  background: var(--bg-tint);
  border: 1px solid var(--border);
  padding: 0.55rem 0.9rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--text);
  border-radius: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
  max-width: calc(100vw - 2rem);
  text-align: center;
  z-index: 10;
  box-shadow: 0 6px 24px rgba(44, 36, 22, 0.08);
}
.aphorism.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---- Fade-in on load ---- */
.fade-in {
  opacity: 0;
  transform: translateY(10px);
  animation: fadeUp 0.55s var(--ease) forwards;
  animation-delay: var(--delay, 0s);
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .fade-in { opacity: 1; transform: none; animation: none; }
  html { scroll-behavior: auto; }
}

/* ---- 404 ---- */
.not-found {
  text-align: center;
  padding: clamp(4rem, 18vh, 9rem) 0;
  max-width: 42ch;
  margin: 0 auto;
}
.not-found h1 {
  font-size: clamp(2.5rem, 7vw, 4rem);
  margin-bottom: 0.4em;
}
.not-found p { color: var(--text-muted); }

/* ---- Print ---- */
@media print {
  .site-header, .site-footer, .article__back { display: none; }
  body { background: #fff; color: #000; font-size: 12pt; }
  a { color: #000; background: none; }
}