/* === Single-column, scrollable personal site === */

/* === CSS Variables === */
:root {
  --navy:           #f7f8fa;  /* page background */
  --light-navy:     #ffffff;  /* card / surface */
  --lightest-navy:  #e2e8ef;  /* borders & dividers */
  --slate:          #52606d;  /* secondary / body text */
  --light-slate:    #3e4c59;  /* stronger secondary */
  --lightest-slate: #27333f;  /* titles */
  --white:          #1f2933;  /* strongest headings */
  --green:          #3b82c4;  /* accent */
  --green-tint:     rgba(59, 130, 196, 0.12);
  --transition:     all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
}

::selection {
  background-color: rgba(59, 130, 196, 0.22);
  color: #1f2933;
}

/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--navy);
  color: var(--slate);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--green);
  text-decoration: none;
  transition: var(--transition);
}

/* === Page Layout === */
.layout {
  max-width: 680px;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

/* === Intro === */
.intro {
  margin-bottom: 4rem;
}

/* Greeting and portrait side by side, portrait flush right. */
.intro-head {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.avatar {
  width: 300px;
  height: 300px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.site-name {
  flex: 1;
  min-width: 0;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.intro p {
  margin-bottom: 1rem;
}

.intro p:last-of-type {
  margin-bottom: 0;
}

.intro a {
  border-bottom: 1px solid var(--green-tint);
}

.intro a:hover {
  border-bottom-color: var(--green);
}

/* === Inline link row (GitHub, email, …) === */
.link-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
}

.link-row a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--light-slate);
}

.link-row a:hover {
  color: var(--green);
}

.link-row svg {
  flex-shrink: 0;
}

/* === Sections === */
section {
  margin-bottom: 4rem;
  scroll-margin-top: 3rem;
}

.section-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--slate);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-label::after {
  content: '';
  display: block;
  flex: 1;
  height: 1px;
  background-color: var(--lightest-navy);
}

/* === Project entries === */
.project-card {
  display: block;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  margin: 0 -1.25rem 0.5rem -1.5rem;
  border-radius: 4px;
  scroll-margin-top: 3rem;
  transition: var(--transition);
}

.project-card:hover {
  background: var(--light-navy);
  transform: translateX(6px);
  box-shadow: inset 2px 0 0 var(--green), 0 6px 24px rgba(31, 41, 51, 0.06);
}

.project-title {
  display: block;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--lightest-slate);
  line-height: 1.4;
}

.project-context {
  display: block;
  font-size: 0.85rem;
  color: var(--light-slate);
  margin-bottom: 0.6rem;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--slate);
  margin-bottom: 0.75rem;
}

.project-desc:last-child {
  margin-bottom: 0;
}

.project-desc a {
  border-bottom: 1px solid transparent;
}

.project-desc a:hover {
  border-bottom-color: var(--green);
}

/* Placeholder line for content still to be written. */
.project-todo {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--slate);
  opacity: 0.85;
  margin-bottom: 0.75rem;
}

/* === Tech tags === */
.project-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.project-tags li {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--light-slate);
  background: var(--lightest-navy);
  border-radius: 3px;
  padding: 0.2rem 0.55rem;
}

/* === Project links === */
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-link {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 3px;
}

.project-link:hover {
  background: var(--green-tint);
}

/* === Upcoming / placeholder entry === */
.project-card--upcoming {
  border: 1px dashed var(--lightest-navy);
}

.project-card--upcoming:hover {
  transform: none;
  box-shadow: none;
  background: transparent;
}

.project-card--upcoming .project-title {
  color: var(--slate);
}

/* === Footer === */
.site-footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--lightest-navy);
  font-size: 0.8rem;
  color: var(--slate);
}

.site-footer a {
  color: var(--slate);
}

.site-footer a:hover {
  color: var(--green);
}

/* === Mobile === */
@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .layout {
    padding: 3rem 1.25rem 4rem;
  }

  .site-name {
    font-size: 1.85rem;
  }

  /* Stack on narrow screens: portrait above the greeting. */
  .intro-head {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .avatar {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .project-card {
    padding: 1rem 1rem 1rem 1.15rem;
    margin-left: -1.15rem;
    margin-right: -1rem;
  }
}

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

  *, *::before, *::after {
    transition: none !important;
  }
}