/* ==========================================================================
   ink & paper
   a typographic design system
   --------------------------------------------------------------------------
   light: warm cream paper, ink text, terracotta accent (book page)
   dark:  true black, paper text, vermilion accent (magazine cover)
   --------------------------------------------------------------------------
   drop-in css. load once, get the full aesthetic.
   theme switch hooks the existing [data-bs-theme="dark"] attribute.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,300;0,6..72,400;0,6..72,500;0,6..72,600;0,6..72,700;1,6..72,300;1,6..72,400;1,6..72,500&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* palette — book page */
  --ip-bg:             #f5f0e8;
  --ip-bg-soft:        #ede7da;
  --ip-text:           #1a1815;
  --ip-muted:          #6b6358;
  --ip-faint:          #a39a8c;
  --ip-accent:         #a0714e;
  --ip-accent-strong:  #7d5738;
  --ip-rule:           rgba(26, 24, 21, 0.12);
  --ip-rule-strong:    rgba(26, 24, 21, 0.28);
  --ip-focus:          rgba(160, 113, 78, 0.35);

  /* typography */
  --ip-font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --ip-font-mono:  'IBM Plex Mono', ui-monospace, 'JetBrains Mono', Menlo, monospace;

  /* type scale */
  --ip-size-display: clamp(2.6rem, 6vw, 4.25rem);
  --ip-size-h1:      clamp(2rem, 4.5vw, 3rem);
  --ip-size-h2:      clamp(1.45rem, 2.6vw, 1.85rem);
  --ip-size-h3:      clamp(1.15rem, 1.8vw, 1.35rem);
  --ip-size-body:    1.0625rem;
  --ip-size-small:   0.9rem;
  --ip-size-meta:    0.76rem;

  /* spacing scale */
  --ip-step-1: 0.5rem;
  --ip-step-2: 1rem;
  --ip-step-3: 1.5rem;
  --ip-step-4: 2.5rem;
  --ip-step-5: 4rem;
  --ip-step-6: 6rem;

  /* layout */
  --ip-measure:      38rem;
  --ip-measure-wide: 56rem;
  --ip-radius:       2px;
}

[data-bs-theme="dark"] {
  /* palette — magazine cover */
  --ip-bg:             #050505;
  --ip-bg-soft:        #0d0d0d;
  --ip-text:           #f0ede5;
  --ip-muted:          #a3a09a;
  --ip-faint:          #6b6a66;
  --ip-accent:         #b94a1f;
  --ip-accent-strong:  #d65a2a;
  --ip-rule:           rgba(240, 237, 229, 0.13);
  --ip-rule-strong:    rgba(240, 237, 229, 0.32);
  --ip-focus:          rgba(185, 74, 31, 0.45);
}

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

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

body {
  margin: 0;
  background: var(--ip-bg);
  color: var(--ip-text);
  font-family: var(--ip-font-serif);
  font-size: var(--ip-size-body);
  line-height: 1.6;
  font-optical-sizing: auto;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--ip-accent);
  color: var(--ip-bg);
}

/* ==========================================================================
   typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ip-font-serif);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.013em;
  margin: 0 0 var(--ip-step-2);
  color: var(--ip-text);
  text-wrap: balance;
}

h1 { font-size: var(--ip-size-h1); }
h2 { font-size: var(--ip-size-h2); }
h3 { font-size: var(--ip-size-h3); }

.ip-display {
  font-size: var(--ip-size-display);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

p { margin: 0 0 var(--ip-step-2); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--ip-text);
  text-decoration: none;
  border-bottom: 1px solid var(--ip-rule-strong);
  transition: color 80ms ease, border-color 80ms ease;
}
a:hover {
  color: var(--ip-accent);
  border-bottom-color: var(--ip-accent);
}
a:focus-visible {
  outline: 2px solid var(--ip-focus);
  outline-offset: 2px;
  border-radius: var(--ip-radius);
}

strong, b { font-weight: 600; }
em, i { font-style: italic; }
small { font-size: var(--ip-size-small); color: var(--ip-muted); }

ul, ol { padding-left: 1.25rem; margin: 0 0 var(--ip-step-2); }
li { margin-bottom: 0.35rem; }

blockquote {
  margin: var(--ip-step-3) 0;
  padding: 0.25rem 0 0.25rem var(--ip-step-2);
  border-left: 2px solid var(--ip-accent);
  color: var(--ip-muted);
  font-style: italic;
}

code, kbd, samp {
  font-family: var(--ip-font-mono);
  font-size: 0.88em;
  background: var(--ip-bg-soft);
  padding: 0.1em 0.32em;
  border-radius: var(--ip-radius);
}

pre {
  font-family: var(--ip-font-mono);
  font-size: 0.85rem;
  background: var(--ip-bg-soft);
  border: 1px solid var(--ip-rule);
  border-radius: var(--ip-radius);
  padding: var(--ip-step-2);
  overflow-x: auto;
  line-height: 1.5;
  margin: 0 0 var(--ip-step-3);
}
pre code {
  background: transparent;
  padding: 0;
  font-size: inherit;
}

hr {
  border: none;
  border-top: 1px solid var(--ip-rule);
  margin: var(--ip-step-3) 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 var(--ip-step-3);
  font-size: var(--ip-size-small);
}
th, td {
  border-bottom: 1px solid var(--ip-rule);
  padding: 0.6rem 0.75rem;
  text-align: left;
}
th {
  font-family: var(--ip-font-mono);
  font-weight: 500;
  text-transform: uppercase;
  font-size: var(--ip-size-meta);
  letter-spacing: 0.06em;
  color: var(--ip-muted);
}

/* ==========================================================================
   primitives
   ========================================================================== */

/* small uppercase mono label */
.ip-meta {
  font-family: var(--ip-font-mono);
  font-size: var(--ip-size-meta);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ip-muted);
  font-weight: 500;
}

/* section header: meta label + hairline rule that fills remaining space */
.ip-section-head {
  display: flex;
  align-items: center;
  gap: var(--ip-step-2);
  margin: 0 0 var(--ip-step-3);
}
.ip-section-head .ip-meta { white-space: nowrap; }
.ip-section-head .ip-rule-fill {
  flex: 1;
  height: 1px;
  background: var(--ip-rule);
}

/* mono utility */
.ip-mono {
  font-family: var(--ip-font-mono);
  font-size: var(--ip-size-meta);
  letter-spacing: 0.04em;
  color: var(--ip-muted);
}

/* hairline button */
.ip-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--ip-font-serif);
  font-size: var(--ip-size-small);
  font-weight: 500;
  color: var(--ip-text);
  background: transparent;
  border: 1px solid var(--ip-rule-strong);
  border-radius: var(--ip-radius);
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
  transition: border-color 80ms ease, color 80ms ease;
}
.ip-btn:hover {
  color: var(--ip-accent);
  border-color: var(--ip-accent);
  background: transparent;
}
.ip-btn:focus-visible {
  outline: 2px solid var(--ip-focus);
  outline-offset: 2px;
}

/* icon-only button (e.g. theme toggle) */
.ip-icon-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--ip-rule-strong);
  border-radius: var(--ip-radius);
  color: var(--ip-muted);
  cursor: pointer;
  padding: 0;
  transition: border-color 80ms ease, color 80ms ease;
}
.ip-icon-btn:hover {
  color: var(--ip-accent);
  border-color: var(--ip-accent);
}

/* hairline input */
.ip-input {
  font-family: var(--ip-font-serif);
  font-size: var(--ip-size-body);
  color: var(--ip-text);
  background: transparent;
  border: 1px solid var(--ip-rule-strong);
  border-radius: var(--ip-radius);
  padding: 0.55rem 0.85rem;
  outline: none;
  line-height: 1.3;
  transition: border-color 80ms ease;
}
.ip-input::placeholder { color: var(--ip-faint); }
.ip-input:focus { border-color: var(--ip-accent); }

/* inline text link with arrow (no border, hover underline) */
.ip-link {
  color: var(--ip-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 80ms ease, border-color 80ms ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.ip-link:hover {
  color: var(--ip-accent);
  border-bottom-color: var(--ip-accent);
}

/* arrow nudges on hover */
.ip-arrow {
  display: inline-block;
  transition: transform 120ms ease;
}
.ip-link:hover .ip-arrow,
.ip-btn:hover .ip-arrow { transform: translateX(3px); }

/* card — hairline, no fill, no shadow */
.ip-card {
  border: 1px solid var(--ip-rule);
  border-radius: var(--ip-radius);
  padding: var(--ip-step-3);
  background: transparent;
  transition: border-color 80ms ease;
}
.ip-card:hover { border-color: var(--ip-rule-strong); }

/* drop cap — opening paragraph of long essays */
.ip-dropcap > p:first-of-type::first-letter {
  font-family: var(--ip-font-serif);
  font-weight: 500;
  font-style: normal;
  float: left;
  font-size: 4.2em;
  line-height: 0.86;
  margin: 0.08em 0.1em -0.05em 0;
  color: var(--ip-accent);
}

/* layout helpers */
.ip-measure       { max-width: var(--ip-measure);      margin-left: auto; margin-right: auto; }
.ip-measure-wide  { max-width: var(--ip-measure-wide); margin-left: auto; margin-right: auto; }

/* dividers */
.ip-divider {
  border: none;
  border-top: 1px solid var(--ip-rule);
  margin: var(--ip-step-4) 0;
}
.ip-divider-short {
  width: 3rem;
  border: none;
  border-top: 1px solid var(--ip-rule-strong);
  margin: var(--ip-step-3) 0;
}

/* row list — editorial list with title on left, mono date on right */
.ip-row-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--ip-rule);
}
.ip-row-list > li {
  border-bottom: 1px solid var(--ip-rule);
  margin: 0;
}
.ip-row-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ip-step-2);
  padding: 0.95rem 0;
  text-decoration: none;
  border: none;
  color: var(--ip-text);
  font-size: var(--ip-size-body);
  transition: color 80ms ease;
}
.ip-row-list a:hover { color: var(--ip-accent); }
.ip-row-list a:hover .ip-row-title {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}
.ip-row-title { flex: 1; }
.ip-row-date {
  font-family: var(--ip-font-mono);
  font-size: var(--ip-size-meta);
  color: var(--ip-muted);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* pill — used for tag lists */
.ip-pill {
  display: inline-block;
  font-family: var(--ip-font-mono);
  font-size: var(--ip-size-meta);
  letter-spacing: 0.05em;
  text-transform: lowercase;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--ip-rule);
  border-radius: var(--ip-radius);
  color: var(--ip-muted);
  transition: border-color 80ms ease, color 80ms ease;
}
.ip-pill:hover {
  color: var(--ip-accent);
  border-color: var(--ip-accent);
}

/* muted text */
.ip-muted { color: var(--ip-muted); }
.ip-faint { color: var(--ip-faint); }

/* prose block — used for rendered markdown */
.ip-prose {
  font-size: var(--ip-size-body);
  line-height: 1.75;
}
.ip-prose h2 {
  margin-top: var(--ip-step-4);
  margin-bottom: var(--ip-step-2);
}
.ip-prose h3 {
  margin-top: var(--ip-step-3);
  margin-bottom: var(--ip-step-1);
}
.ip-prose p {
  margin-bottom: var(--ip-step-2);
}
.ip-prose a {
  color: var(--ip-text);
  border-bottom: 1px solid var(--ip-accent);
}
.ip-prose a:hover {
  color: var(--ip-accent);
}
.ip-prose img {
  margin: var(--ip-step-3) 0;
  border: 1px solid var(--ip-rule);
  border-radius: var(--ip-radius);
}