/* Owen Mackaman — author portfolio */

:root {
  --color-bg-top: #d9a574;
  --color-bg-mid: #f0e6d8;
  --color-bg-bottom: #faf8f5;
  --color-accent: #c45c26;
  --color-text: #1a1a1a;
  --color-text-muted: #3d3d3d;
  --color-border-input: #c8c8c8;
  --color-paper: #fff;
  --color-typewriter-base: #1a1a1a;

  --paper-max: 66rem;
  --paper-pad-x: clamp(1.5rem, 5vw, 3.25rem);
  --paper-side-margin: clamp(1rem, 5vw, 3rem);
  --paper-radius: 2px;
  --space-section: clamp(3rem, 8vw, 4.5rem);
  --space-inner: clamp(1.5rem, 5vw, 2.75rem);

  --font-serif: "berthold-baskerville-pro", sans-serif;
  --font-sans: "indivisible-variable", sans-serif;
  --font-mono: "calling-code", sans-serif;

  /* Title size / line-height — used to overlap paper by ~15% of one line */
  --site-title-size: clamp(2rem, 7.25vw, 5.25rem);
  --site-title-line: 0.92;
  /* Pull paper up so its top covers the bottom of the hero line (tied to title metrics) */
  --paper-overlap: calc(var(--site-title-size) * var(--site-title-line) * -0.52);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-variation-settings: "wght" 400;
  color: var(--color-text);
  background: linear-gradient(
    180deg,
    var(--color-bg-top) 0%,
    var(--color-bg-mid) 35%,
    var(--color-bg-bottom) 48%,
    var(--color-paper) 58%
  );
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Subtle grain (only over the warm gradient; fade out where bg is paper so margins match .paper) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image:
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  -webkit-mask-image: linear-gradient(
    180deg,
    #000 0%,
    #000 32%,
    transparent 58%
  );
  mask-image: linear-gradient(
    180deg,
    #000 0%,
    #000 32%,
    transparent 58%
  );
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header + paper share one column so nav aligns with paper edges */
.paper-stack {
  width: min(100% - var(--paper-side-margin), var(--paper-max));
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

/* —— Backdrop header: About | name | Contact (one row, vertically centered) —— */
.backdrop-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: clamp(0.5rem, 2vw, 1rem);
  padding: clamp(1.25rem, 4vw, 2.25rem) var(--paper-pad-x)
    clamp(0.75rem, 2.5vw, 1.25rem);
  position: relative;
  z-index: 0;
}

.backdrop-header .nav-link {
  grid-row: 1;
  z-index: 2;
  font-family: var(--font-mono);
  font-weight: 400;
  font-style: normal;
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
}

.backdrop-header .nav-link:first-of-type {
  grid-column: 1;
  justify-self: start;
}

.backdrop-header .nav-link:last-of-type {
  grid-column: 3;
  justify-self: end;
}

.site-title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  padding: 0 0.35rem;
  justify-self: center;
  align-self: center;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  text-align: center;
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: normal;
  font-size: var(--site-title-size);
  line-height: var(--site-title-line);
  letter-spacing: -0.02em;
  color: var(--color-text);
  pointer-events: none;
}

/* —— Paper column —— */
.paper {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: var(--paper-overlap) 0 0;
  background: var(--color-paper);
  border-radius: var(--paper-radius);
  padding: var(--space-inner) var(--paper-pad-x) clamp(2rem, 5vw, 3rem);
}

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

.section-book,
.section-about {
  text-align: left;
}

.heading-serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: normal;
  color: var(--color-text);
}

.label-mono {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 400;
  font-style: normal;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.body-text {
  font-family: var(--font-sans);
  font-variation-settings: "wght" 400;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.body-text p {
  margin: 0 0 1rem;
}

.body-text p:last-child {
  margin-bottom: 0;
}

.book-name {
  font-style: italic;
  font-variation-settings: "wght" 500;
  color: var(--color-text);
}

/* —— Book —— */
.book-grid {
  display: grid;
  grid-template-columns: minmax(0, 13.5rem) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.book-copy {
  padding-top: clamp(1.125rem, 2.8vw, 1.875rem);
}

.book-cover {
  width: 100%;
  height: auto;
  display: block;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.book-title {
  margin: 0 0 0.35rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.15;
}

.book-copy .label-mono {
  margin-bottom: 1.25rem;
}

.book-copy .body-text {
  margin-bottom: 0.65rem;
}

.book-copy .book-meta {
  margin: 0 0 1.25rem;
  font-family: var(--font-sans);
  font-variation-settings: "wght" 400;
  font-size: calc(1rem - 3pt);
  font-style: italic;
  text-align: left;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* —— Buttons —— */
.btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: #fff;
  background: var(--color-text);
  border: none;
  border-radius: 9999px;
  padding: 0.65rem 1.35rem;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.btn-pill:hover {
  background: #000;
}

.btn-pill:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn-pill--submit {
  font: inherit;
  font-family: var(--font-mono);
}

.icon-external {
  flex-shrink: 0;
  opacity: 0.95;
}

/* —— About —— */
.about-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: center;
  margin-bottom: 1.5rem;
}

.author-photo {
  width: clamp(4.25rem, 12vw, 5.75rem);
  height: clamp(4.25rem, 12vw, 5.75rem);
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.about-intro .label-mono {
  margin-bottom: 0.35rem;
}

.about-name {
  margin: 0;
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  line-height: 1.2;
}

/* —— Contact —— */
.contact-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.contact-form {
  max-width: 100%;
}

.form-row--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.25rem;
}

.field {
  display: block;
  margin-bottom: 1rem;
}

.field-label {
  display: block;
  font-family: var(--font-sans);
  font-variation-settings: "wght" 500;
  font-size: 0.875rem;
  margin-bottom: 0.35rem;
  color: var(--color-text-muted);
}

.field input,
.field textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-variation-settings: "wght" 400;
  font-size: 1rem;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border-input);
  border-radius: 2px;
  padding: 0.65rem 0.75rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field textarea {
  resize: vertical;
  min-height: 8rem;
}

.field input:focus-visible,
.field textarea:focus-visible {
  outline: none;
  border-color: var(--color-text);
  box-shadow: 0 0 0 2px rgba(196, 92, 38, 0.25);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.25rem;
}

.form-feedback {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-feedback[hidden] {
  display: none;
}

/* —— Typewriter footer —— */
.typewriter-footer {
  position: relative;
  z-index: 0;
  margin-top: -3rem;
  padding-top: 0;
  background: var(--color-typewriter-base);
}

.typewriter-wrap {
  position: relative;
  width: 100%;
  max-width: 70rem;
  margin-inline: auto;
  background: var(--color-typewriter-base);
  overflow: hidden;
}

.typewriter-img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: bottom;
}

.copyright {
  position: absolute;
  left: clamp(1rem, 4vw, 2.5rem);
  bottom: clamp(0.75rem, 2vw, 1.25rem);
  margin: 0;
  max-width: min(90%, 20rem);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.85);
}

/* —— Focus: links —— */
.nav-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* —— Responsive —— */
@media (max-width: 720px) {
  .book-grid {
    grid-template-columns: 1fr;
    justify-items: start;
    text-align: left;
  }

  .book-cover {
    max-width: 10.5rem;
    justify-self: center;
  }

  .book-copy {
    max-width: 36rem;
  }

  .about-header {
    grid-template-columns: 1fr;
    justify-items: start;
    text-align: left;
  }

  .form-row--split {
    grid-template-columns: 1fr;
  }

  .typewriter-footer {
    margin-top: -2rem;
  }
}

@media (max-width: 480px) {
  .backdrop-header .nav-link {
    font-size: 0.78125rem;
  }

  .paper-stack {
    width: min(100% - 1.25rem, var(--paper-max));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn-pill {
    transition: none;
  }
}