* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #050505;
  color: #e8e8e8;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Accessibility: skip link for keyboard and screen reader users */
.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  background: #ffffff;
  color: #050505;
  padding: 10px 14px;
  z-index: 9999;
  text-decoration: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
}

.skip-link:focus {
  left: 12px;
}

a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 4px;
}

a:hover,
a:focus {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
.archive-item:focus-visible,
.button:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 4px;
}

/* Student project banner */
.student-banner {
  position: relative;
  z-index: 1001;
  background: #f2f2f2;
  color: #050505;
  text-align: center;
  padding: 8px 16px;
  font-size: 13px;
  line-height: 1.4;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 76px;
  padding: 0 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(5, 5, 5, 0.75);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid #202020;
  z-index: 1000;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -1px;
}

nav {
  display: flex;
  gap: 34px;
  flex-wrap: wrap;
}

nav a {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #b5b5b5;
}

nav a:hover,
nav a:focus {
  color: #ffffff;
}

/* Hero */
.hero {
  min-height: 100vh;
  padding: 140px 4vw 80px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    radial-gradient(circle at 80% 20%, rgba(90, 90, 90, 0.18), transparent 30%),
    linear-gradient(180deg, #050505 0%, #0d0d0d 100%);
}

.eyebrow {
  color: #b0b0b0;
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 12px;
  margin-bottom: 26px;
}

.hero h1 {
  font-size: clamp(3.4rem, 15vw, 11.8rem);
  line-height: 0.78;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  max-width: 1200px;
  word-break: break-word;
}

.hero-text {
  max-width: 520px;
  color: #c2c2c2;
  margin-top: 36px;
  font-size: 17px;
}

.button {
  margin-top: 34px;
  width: fit-content;
  border: 1px solid #777;
  padding: 15px 26px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: 0.25s ease;
}

.button:hover,
.button:focus {
  background: #e8e8e8;
  color: #050505;
  text-decoration: none;
}

/* About and Contact */
.about,
.contact {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  padding: 110px 4vw;
  border-top: 1px solid #1d1d1d;
}

.section-number,
.section-title span {
  color: #8a8a8a;
  font-size: 12px;
  letter-spacing: 2px;
}

h2 {
  font-size: clamp(36px, 6vw, 82px);
  line-height: 0.9;
  letter-spacing: -4px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.about p,
.contact p {
  max-width: 780px;
  color: #c5c5c5;
  font-size: 19px;
}

.skills {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skills span {
  border: 1px solid #444;
  padding: 10px 14px;
  color: #c0c0c0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Work archive */
.work {
  padding: 110px 4vw;
  background: #080808;
  border-top: 1px solid #1d1d1d;
}

.section-title {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.archive-list {
  border-top: 1px solid #262626;
}

.archive-item {
  min-height: 118px;
  display: grid;
  grid-template-columns: 90px 1fr 160px;
  gap: 28px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid #262626;
  transition: 0.25s ease;
}

.archive-item:hover,
.archive-item:focus {
  padding-left: 20px;
  background: #111;
  text-decoration: none;
}

.archive-item.featured {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.05), transparent);
}

.num,
.type {
  color: #9a9a9a;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.archive-item h3 {
  font-size: clamp(26px, 4vw, 54px);
  line-height: 0.95;
  letter-spacing: -2px;
  text-transform: uppercase;
}

.archive-item p {
  margin-top: 10px;
  color: #b8b8b8;
  font-size: 14px;
}

.contact a {
  border-bottom: 1px solid #999;
}

footer {
  padding: 34px 4vw;
  border-top: 1px solid #1d1d1d;
  color: #999;
  font-size: 12px;
}

/* Tablet */
@media (max-width: 900px) {
  .site-header {
    height: auto;
    min-height: 76px;
    padding: 22px 5vw;
    align-items: flex-start;
    gap: 16px;
  }

  nav {
    gap: 18px;
  }

  .hero {
    padding: 160px 5vw 70px;
  }

  .hero h1 {
    letter-spacing: -0.04em;
  }

  .about,
  .contact,
  .section-title {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-left: 5vw;
    padding-right: 5vw;
  }

  .work {
    padding-left: 5vw;
    padding-right: 5vw;
  }

  .archive-item {
    grid-template-columns: 70px 1fr;
    gap: 18px;
  }

  .archive-item .type {
    grid-column: 2;
    justify-self: start;
  }

  .archive-item:hover,
  .archive-item:focus {
    padding-left: 0;
  }
}

/* Mobile */
@media (max-width: 600px) {
  .site-header {
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  nav a {
    font-size: 11px;
    letter-spacing: 1.5px;
  }

  .hero {
    min-height: auto;
    padding: 170px 5vw 64px;
  }

  .hero h1 {
    font-size: clamp(2.8rem, 18vw, 5rem);
    line-height: 0.9;
    letter-spacing: -0.04em;
  }

  .hero-text {
    font-size: 16px;
    line-height: 1.6;
  }

  h2 {
    font-size: clamp(2.2rem, 12vw, 4rem);
    letter-spacing: -0.04em;
  }

  .about,
  .contact,
  .work {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .about p,
  .contact p {
    font-size: 17px;
    line-height: 1.6;
  }

  .archive-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 26px 0;
  }

  .archive-item .type {
    grid-column: auto;
  }

  .archive-item h3 {
    font-size: clamp(1.7rem, 10vw, 3rem);
  }

  .archive-item p {
    font-size: 14px;
    line-height: 1.55;
  }
}

/* Very small phones */
@media (max-width: 380px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 190px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }
}

.assignments {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.assignment-item {
  display: grid;
  grid-template-columns: 100px 1fr 160px;
  align-items: center;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: inherit;
  text-decoration: none;
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.assignment-item:hover,
.assignment-item:focus-visible {
  background: rgba(255, 255, 255, 0.04);
  padding-left: 1rem;
}

.assignment-item .num,
.assignment-item .type {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.assignment-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  line-height: 1.1;
}

.assignment-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
}

.assignment-item .type {
  justify-self: end;
}

@media (max-width: 700px) {
  .assignment-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .assignment-item .type {
    justify-self: start;
  }
}

#assignments .archive-item .type {
  min-width: 120px;
  text-align: right;
}

@media (max-width: 700px) {
  #assignments .archive-item .type {
    text-align: left;
  }
}