:root {
  --background: #f5f2ea;
  --surface: #fbfaf6;
  --forest: #263b30;
  --green: #526b5c;
  --sage: #a6b5a3;
  --text: #28302b;
  --muted: #70766f;
  --line: #d9d6cc;
  --line-dark: #c8c4b8;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* =========================================================
   HEADER
   ========================================================= */

.site-header {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto;
  padding: 30px 0;

  display: flex;
  justify-content: space-between;
  align-items: center;

  border-bottom: 1px solid var(--line);
}

.logo {
  color: var(--forest);

  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: bold;

  letter-spacing: 0.08em;
}

nav {
  display: flex;
  gap: 32px;
}

nav a {
  position: relative;

  color: var(--muted);
  font-size: 0.9rem;

  transition: color 0.2s ease;
}

nav a::after {
  content: "";

  position: absolute;
  left: 0;
  bottom: -7px;

  width: 0;
  height: 1px;

  background: var(--forest);

  transition: width 0.2s ease;
}

nav a:hover,
nav a.active {
  color: var(--forest);
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

/* =========================================================
   GENERAL
   ========================================================= */

main {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto;
}

h1,
h2,
h3 {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--forest);
  font-weight: normal;
}

.eyebrow {
  margin: 0 0 22px;

  color: var(--green);

  font-size: 0.75rem;
  font-weight: bold;

  letter-spacing: 0.16em;
}

.text-link {
  color: var(--forest);

  border-bottom: 1px solid var(--forest);

  padding-bottom: 3px;

  font-size: 0.9rem;

  transition: opacity 0.2s ease;
}

.text-link:hover {
  opacity: 0.65;
}

/* =========================================================
   BUTTON
   ========================================================= */

.button {
  display: inline-block;

  border: 0;

  background: var(--forest);
  color: var(--white);

  padding: 13px 23px;

  font: inherit;

  cursor: pointer;

  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.button:hover {
  background: var(--green);
  transform: translateY(-1px);
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  min-height: 620px;

  padding: 100px 0 120px;

  display: grid;

  grid-template-columns: 1.25fr 0.75fr;

  gap: 80px;

  align-items: center;
}

.hero h1 {
  margin: 0;

  font-size: clamp(3.5rem, 7vw, 6.5rem);

  line-height: 0.95;

  letter-spacing: -0.05em;
}

.hero-description {
  max-width: 580px;

  margin: 35px 0 0;

  color: var(--muted);

  font-size: 1.05rem;
}

.hero-links {
  display: flex;

  align-items: center;

  gap: 28px;

  margin-top: 35px;
}

/* =========================================================
   CURRENT CARD
   ========================================================= */

.current-card {
  background: var(--surface);

  padding: 35px;

  border: 1px solid var(--line);

  box-shadow: 0 8px 25px rgba(38, 59, 48, 0.03);
}

.card-label {
  margin: 0 0 25px;

  color: var(--green);

  font-size: 0.7rem;
  font-weight: bold;

  letter-spacing: 0.15em;
}

.card-row {
  display: flex;

  flex-direction: column;

  gap: 3px;

  padding: 17px 0;

  border-top: 1px solid var(--line);
}

.card-row span {
  color: var(--muted);

  font-size: 0.78rem;
}

.card-row strong {
  color: var(--text);

  font-size: 0.92rem;

  font-weight: normal;
}

/* =========================================================
   SECTIONS
   ========================================================= */

.home-section,
.about-section,
.bookshelf-section,
.finder-section {
  padding: 110px 0;

  border-top: 1px solid var(--line);
}

.section-heading p {
  margin: 0 0 20px;

  color: var(--green);

  font-size: 0.75rem;
  font-weight: bold;

  letter-spacing: 0.15em;
}

.section-heading h2 {
  margin: 0;

  font-size: clamp(2.5rem, 5vw, 4.5rem);

  line-height: 1;

  letter-spacing: -0.035em;
}

/* =========================================================
   SKILLS
   ========================================================= */

.skills-list {
  margin-top: 55px;
}

.skill-row {
  display: grid;

  grid-template-columns: 260px 1fr;

  gap: 40px;

  padding: 24px 0;

  border-top: 1px solid var(--line);
}

.skill-row:last-child {
  border-bottom: 1px solid var(--line);
}

.skill-title {
  color: var(--forest);

  font-weight: bold;
}

.skill-items {
  color: var(--muted);
}

/* =========================================================
   PROJECTS
   ========================================================= */

.projects-section {
  padding-bottom: 120px;
}

.project-heading {
  display: block;
}

.project-list {
  display: grid;

  grid-template-columns: 1fr;

  gap: 18px;

  margin-top: 60px;
}

.project-card {
  position: relative;

  padding: 35px 38px 30px;

  background: var(--surface);

  border: 1px solid var(--line);

  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.project-card:hover {
  transform: translateY(-3px);

  border-color: var(--line-dark);

  box-shadow: 0 12px 30px rgba(38, 59, 48, 0.06);
}

.project-top {
  display: flex;

  justify-content: space-between;

  align-items: center;
}

.project-type {
  color: var(--green);

  font-size: 0.72rem;

  font-weight: bold;

  letter-spacing: 0.08em;

  text-transform: uppercase;
}

.project-arrow {
  width: 34px;
  height: 34px;

  display: flex;

  align-items: center;
  justify-content: center;

  border: 1px solid var(--line);

  color: var(--forest);

  font-size: 1rem;

  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.project-card:hover .project-arrow {
  background: var(--forest);
  color: var(--white);
}

.project-content {
  max-width: 760px;

  padding: 48px 0 42px;
}

.project-content h3 {
  margin: 0 0 14px;

  color: var(--forest);

  font-size: clamp(2rem, 4vw, 3rem);

  line-height: 1.05;

  letter-spacing: -0.025em;
}

.project-content p {
  max-width: 680px;

  margin: 0;

  color: var(--muted);

  font-size: 0.98rem;

  line-height: 1.75;
}

.project-bottom {
  display: flex;

  flex-wrap: wrap;

  gap: 8px;

  padding-top: 20px;

  border-top: 1px solid var(--line);
}

.project-bottom span {
  padding: 6px 10px;

  background: var(--background);

  border: 1px solid var(--line);

  color: var(--green);

  font-size: 0.7rem;

  line-height: 1.2;
}

/* =========================================================
   CLOSING
   ========================================================= */

.home-closing,
.about-closing {
  padding: 130px 0;

  text-align: center;

  border-top: 1px solid var(--line);
}

.home-closing h2,
.about-closing h2 {
  margin: 0 0 30px;

  font-size: clamp(3rem, 6vw, 5.5rem);

  line-height: 0.98;

  letter-spacing: -0.04em;
}

.home-closing h2 em,
.about-closing h2 em {
  color: var(--green);
}

/* =========================================================
   PAGE INTRO
   ========================================================= */

.page-intro {
  max-width: 850px;

  padding: 110px 0 120px;
}

.page-intro h1 {
  margin: 0;

  font-size: clamp(4rem, 8vw, 7rem);

  line-height: 0.92;

  letter-spacing: -0.05em;
}

.page-intro > p:last-child {
  max-width: 620px;

  margin: 40px 0 0;

  color: var(--muted);

  font-size: 1.05rem;
}

/* =========================================================
   ABOUT
   ========================================================= */

.about-grid {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 90px;

  margin-top: 45px;
}

.about-grid h2 {
  margin: 0;

  font-size: clamp(2.3rem, 4vw, 3.8rem);

  line-height: 1.05;
}

.about-copy {
  color: var(--muted);
}

.about-copy p {
  margin: 0 0 22px;
}

.area-grid {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 1px;

  margin-top: 50px;

  background: var(--line);

  border: 1px solid var(--line);
}

.area-card {
  min-height: 220px;

  padding: 35px;

  background: var(--surface);

  transition: background 0.2s ease;
}

.area-card:hover {
  background: #f8f6f0;
}

.area-card h3 {
  margin: 0 0 15px;

  font-size: 1.5rem;
}

.area-card p {
  max-width: 390px;

  margin: 0;

  color: var(--muted);
}

.learning-copy {
  max-width: 700px;

  margin-top: 45px;

  margin-left: auto;
}

.about-closing {
  text-align: left;
}

.about-closing p:not(.eyebrow) {
  max-width: 550px;

  margin: 0 0 25px;

  color: var(--muted);
}

/* =========================================================
   BOOKSHELF
   ========================================================= */

.bookshelf-intro {
  max-width: 760px;
}

.book-grid {
  display: grid;

  grid-template-columns: repeat(3, 1fr);

  gap: 45px;

  margin-top: 55px;
}

.book-card {
  min-width: 0;
}

.book-cover {
  aspect-ratio: 2 / 3;

  display: flex;

  align-items: center;
  justify-content: center;

  background: var(--surface);

  border: 1px solid var(--line);

  padding: 25px;

  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.book-card:hover .book-cover {
  transform: translateY(-4px);

  box-shadow: 0 12px 25px rgba(38, 59, 48, 0.06);
}

.book-cover img {
  width: 100%;
  height: 100%;
}

.book-info {
  padding-top: 20px;
}

.book-info h2 {
  margin: 0 0 5px;

  font-size: 1.5rem;
}

.book-info p {
  margin: 0;

  color: var(--muted);

  font-size: 0.9rem;
}

/* =========================================================
   BOOK FINDER
   ========================================================= */

.finder {
  margin-top: 55px;

  display: grid;

  grid-template-columns: 280px 1fr;

  gap: 70px;
}

.finder-controls {
  display: flex;

  flex-direction: column;

  gap: 10px;
}

.finder-controls label {
  margin-top: 15px;

  color: var(--forest);

  font-size: 0.85rem;

  font-weight: bold;
}

.finder-controls select {
  width: 100%;

  padding: 12px;

  background: var(--surface);

  border: 1px solid var(--line);

  color: var(--text);

  font: inherit;
}

.finder-controls .button {
  margin-top: 25px;
}

.book-results {
  display: grid;

  grid-template-columns: repeat(3, 1fr);

  gap: 25px;

  align-items: start;
}

.finder-placeholder {
  grid-column: 1 / -1;

  color: var(--muted);
}

.recommendation {
  background: var(--surface);

  border: 1px solid var(--line);

  padding: 25px;

  min-height: 130px;
}

.recommendation h3 {
  margin: 0 0 8px;

  font-size: 1.3rem;
}

.recommendation p {
  margin: 0;

  color: var(--muted);

  font-size: 0.85rem;
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  width: min(1100px, calc(100% - 48px));

  margin: 0 auto;

  padding: 35px 0;

  display: flex;

  justify-content: space-between;

  gap: 30px;

  border-top: 1px solid var(--line);

  color: var(--muted);

  font-size: 0.8rem;
}

.site-footer strong {
  color: var(--forest);

  letter-spacing: 0.08em;
}

.contact-links {
  display: flex;

  flex-wrap: wrap;

  gap: 20px;
}

.contact-links a {
  border-bottom: 1px solid transparent;

  transition:
    border-color 0.2s ease,
    color 0.2s ease;
}

.contact-links a:hover {
  color: var(--forest);
  border-color: var(--forest);
}

/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 800px) {
  .site-header {
    width: min(100% - 32px, 1100px);
  }

  main {
    width: min(100% - 32px, 1100px);
  }

  nav {
    gap: 18px;
  }

  .hero {
    min-height: auto;

    padding: 80px 0;

    grid-template-columns: 1fr;

    gap: 55px;
  }

  .hero h1 {
    font-size: clamp(3.5rem, 15vw, 5rem);
  }

  .home-section,
  .about-section,
  .bookshelf-section,
  .finder-section {
    padding: 80px 0;
  }

  .project-list {
    margin-top: 45px;
  }

  .project-content {
    padding: 38px 0;
  }

  .skill-row {
    grid-template-columns: 1fr;

    gap: 8px;
  }

  .about-grid {
    grid-template-columns: 1fr;

    gap: 35px;
  }

  .learning-copy {
    margin-left: 0;
  }

  .area-grid {
    grid-template-columns: 1fr;
  }

  .book-grid {
    grid-template-columns: 1fr;

    max-width: 350px;
  }

  .finder {
    grid-template-columns: 1fr;

    gap: 45px;
  }

  .book-results {
    grid-template-columns: 1fr;
  }

  .page-intro {
    padding: 80px 0;
  }

  .page-intro h1 {
    font-size: clamp(3.5rem, 15vw, 5rem);
  }

  .site-footer {
    width: min(100% - 32px, 1100px);

    flex-direction: column;

    gap: 10px;
  }
}

/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 500px) {
  .site-header {
    padding: 22px 0;
  }

  nav {
    gap: 12px;
  }

  nav a {
    font-size: 0.8rem;
  }

  .hero-links {
    align-items: flex-start;

    flex-direction: column;

    gap: 20px;
  }

  .current-card {
    padding: 25px;
  }

  .home-closing,
  .about-closing {
    padding: 90px 0;
  }

  .project-card {
    padding: 25px 22px 22px;
  }

  .project-content {
    padding: 32px 0;
  }

  .project-content h3 {
    font-size: 2rem;
  }

  .project-content p {
    font-size: 0.92rem;
  }

  .project-bottom {
    gap: 6px;
  }

  .project-bottom span {
    font-size: 0.66rem;
  }

  .project-arrow {
    width: 30px;
    height: 30px;
  }
}