/* Leverage — stylesheet
   Editorial restraint. Typography-first. Paper / ink / ochre.
   Every rule here is load-bearing. No decoration for decoration's sake. */

:root {
  --paper: #F5F1E8;
  --ink: #1C1A16;
  --ink-muted: #6B655B;
  --ochre: #9A6E3A;
  --ochre-deep: #7B5729;
  --rule: #C9C0AD;
  --field-bg: #EFE9DB;

  --serif: "EB Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  --measure-read: 640px;
  --measure-wide: 780px;
  --measure-page: 1100px;

  --space-unit: 1.5rem;
  --space-section: clamp(4rem, 10vh, 7rem);
  --space-sub: clamp(2.5rem, 6vh, 4rem);
}

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

html {
  font-size: 18px;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

@media (max-width: 640px) {
  html { font-size: 17px; }
}

body {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.65;
  font-feature-settings: "kern", "liga", "onum";
  background: var(--paper);
  color: var(--ink);
}

/* Layout container ----------------------------------------------------- */

.page {
  max-width: var(--measure-page);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
}

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

.wide {
  max-width: var(--measure-wide);
}

/* Nav ------------------------------------------------------------------ */

.nav {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.nav__mark {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.nav__mark:hover {
  color: var(--ink);
}

.nav__links {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.nav__links li {
  display: inline-flex;
  align-items: baseline;
}

.nav__links li:not(:last-child)::after {
  content: "·";
  color: var(--ochre);
  margin: 0 0.75rem;
  font-weight: 400;
}

.nav__links a {
  color: var(--ink);
  text-decoration: none;
  transition: color 150ms ease;
}

.nav__links a:hover {
  color: var(--ochre-deep);
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

.nav__links a[aria-current="page"] {
  color: var(--ochre-deep);
  font-style: italic;
}

@media (max-width: 640px) {
  .nav {
    padding: 2rem 0 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .nav__links {
    flex-wrap: wrap;
    gap: 0;
  }
}

/* Type ------------------------------------------------------------------ */

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  margin: 0;
  color: var(--ink);
}

.hero__claim {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 500;
  margin: 0;
  max-width: 18ch;
}

.hero__sub {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  color: var(--ink-muted);
  margin: 1.75rem 0 0;
}

.page-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.2;
  letter-spacing: -0.005em;
  font-weight: 500;
  margin: 0;
}

.section-head {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.3;
  color: var(--ink);
  margin: 0 0 1rem;
}

.subsection-head {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.75rem;
  line-height: 1.3;
  color: var(--ink);
  margin: 0 0 1.25rem;
}

p {
  margin: 0 0 1.5rem;
  font-size: 1.125rem;
  line-height: 1.65;
}

p.lede {
  font-size: 1.25rem;
  line-height: 1.55;
}

p.muted {
  color: var(--ink-muted);
}

em, i {
  font-style: italic;
}

strong {
  font-weight: 500;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: color 150ms ease, text-decoration-color 150ms ease;
}

a:hover {
  color: var(--ochre-deep);
  text-decoration-color: var(--ochre-deep);
  text-decoration-thickness: 1px;
}

/* Labels --------------------------------------------------------------- */

.eyebrow {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.meta {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 0.8125rem;
  letter-spacing: 0.015em;
  color: var(--ink-muted);
}

/* Hero section --------------------------------------------------------- */

.hero {
  padding: clamp(4rem, 12vh, 8rem) 0 0;
  min-height: 58vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--measure-wide);
}

/* Inner pages: a tighter title block; the hero min-height is wrong for
   short page titles where it leaves a hollow column of empty paper. */
.hero--title-only {
  padding: clamp(3.5rem, 9vh, 6rem) 0 0;
  min-height: 0;
  display: block;
}

/* Generic section spacing --------------------------------------------- */

.section {
  margin-top: var(--space-section);
}

.section--sub {
  margin-top: var(--space-sub);
}

/* Home — writing preview ---------------------------------------------- */

.writing-preview {
  max-width: var(--measure-wide);
}

.writing-preview__title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.3;
  margin: 0 0 0.75rem;
}

.writing-preview__title a {
  color: var(--ink);
  text-decoration: none;
}

.writing-preview__title a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.writing-preview__excerpt {
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.read-more {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--ochre-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--ochre);
  padding-bottom: 1px;
}

.read-more:hover {
  color: var(--ochre-deep);
  border-bottom-color: var(--ochre-deep);
}

/* Invitation ----------------------------------------------------------- */

.invitation {
  max-width: var(--measure-wide);
  margin-top: var(--space-section);
  font-size: 1.25rem;
  line-height: 1.55;
}

.invitation a {
  color: var(--ochre-deep);
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-underline-offset: 0.22em;
}

/* The Work — engagement forms ----------------------------------------- */

.form-block {
  margin-top: var(--space-sub);
  max-width: var(--measure-read);
}

.form-block__name {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.625rem;
  line-height: 1.3;
  margin: 0 0 1rem;
}

.form-block p {
  margin: 0 0 1.25rem;
}

/* Writing index -------------------------------------------------------- */

.essay-list {
  list-style: none;
  margin: var(--space-sub) 0 0;
  padding: 0;
  max-width: var(--measure-read);
}

.essay-list li {
  margin: 0 0 3rem;
}

.essay-list .date {
  display: block;
  font-family: var(--sans);
  font-size: 0.8125rem;
  letter-spacing: 0.015em;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}

.essay-list .title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.375rem;
  line-height: 1.35;
  margin: 0 0 0.625rem;
}

.essay-list .title a {
  color: var(--ink);
  text-decoration: none;
}

.essay-list .title a:hover {
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-underline-offset: 0.2em;
}

.essay-list .title.unlinked {
  color: var(--ink);
}

.essay-list .excerpt {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--ink-muted);
  line-height: 1.55;
  margin: 0 0 0.5rem;
}

.essay-list .note {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-muted);
  opacity: 0.7;
}

.subscribe-line {
  margin-top: calc(var(--space-section) - 2rem);
  max-width: var(--measure-read);
  text-align: center;
  font-style: italic;
  color: var(--ink-muted);
  font-size: 1rem;
}

.subscribe-line a {
  color: var(--ochre-deep);
  font-style: italic;
}

/* Essay page ----------------------------------------------------------- */

.essay {
  max-width: var(--measure-read);
  margin-top: clamp(3rem, 8vh, 5rem);
}

.essay__date {
  font-family: var(--sans);
  font-size: 0.8125rem;
  letter-spacing: 0.015em;
  color: var(--ink-muted);
  margin: 0 0 0.75rem;
}

.essay__title {
  font-size: clamp(1.875rem, 3.5vw, 2.5rem);
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: -0.005em;
  margin: 0 0 2.5rem;
}

.essay__body p {
  font-size: 1.1875rem;
  line-height: 1.7;
  margin: 0 0 1.5rem;
}

.essay__body p:first-child {
  font-size: 1.3125rem;
  line-height: 1.55;
}

.essay-back {
  margin-top: 4rem;
  font-family: var(--sans);
  font-size: 0.875rem;
}

.essay-back a {
  color: var(--ink-muted);
  text-decoration: none;
}

.essay-back a:hover {
  color: var(--ochre-deep);
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-underline-offset: 0.2em;
}

/* Begin page — form ---------------------------------------------------- */

.begin-intro {
  max-width: var(--measure-wide);
  margin-top: var(--space-sub);
}

.begin-intro .lede {
  font-size: 1.375rem;
  line-height: 1.5;
  margin: 0 0 1.75rem;
}

.begin-form {
  max-width: var(--measure-read);
  margin-top: var(--space-sub);
}

.begin-form .form-head {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.5rem;
  margin: 0 0 1.75rem;
}

.field {
  margin-bottom: 1.75rem;
}

.field label {
  display: block;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
  letter-spacing: 0.005em;
}

.field input,
.field textarea {
  display: block;
  width: 100%;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--field-bg);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 150ms ease;
  appearance: none;
  -webkit-appearance: none;
}

.field textarea {
  resize: vertical;
  min-height: 6.5rem;
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.55;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--ink-muted);
  opacity: 0.55;
  font-style: italic;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--ochre);
}

.submit {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--ochre);
  color: var(--paper);
  padding: 0.875rem 1.75rem;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  transition: background 200ms ease;
  margin-top: 0.5rem;
}

.submit:hover,
.submit:focus {
  background: var(--ochre-deep);
  outline: none;
}

.next-note {
  max-width: var(--measure-read);
  margin-top: 2.75rem;
  color: var(--ink-muted);
  font-size: 1.0625rem;
  line-height: 1.6;
}

.confirmation {
  max-width: var(--measure-read);
  margin-top: var(--space-sub);
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--ink);
  padding: 2rem 0 1rem;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

/* Footer --------------------------------------------------------------- */

.footer {
  margin-top: var(--space-section);
  padding: 4rem 0 3rem;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  font-family: var(--sans);
  font-size: 0.8125rem;
  letter-spacing: 0.015em;
  color: var(--ink-muted);
}

.footer a {
  color: var(--ochre-deep);
  text-decoration: none;
  font-size: 0.8125rem;
  font-family: var(--sans);
}

.footer a:hover {
  text-decoration: underline;
  text-decoration-color: var(--ochre);
  text-underline-offset: 0.2em;
}

@media (max-width: 640px) {
  .footer {
    flex-direction: column;
    gap: 0.75rem;
  }
}

/* Print-sensitive selection color */
::selection {
  background: var(--ochre);
  color: var(--paper);
}