/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

@font-face {
  font-family: "Setra";
  src: url("./fonts/SetraVAR.woff2") format("woff2");
  font-weight: 100 900;
}

body {
  font-family: "Setra", "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #000;
  background-color: #fff;
}

/* Header and Navigation */
header {
  background-color: #fff;
  border-bottom: 1px solid #e5e5e5;
  padding: 1.5rem 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  position: sticky;
}

header h1 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2.5rem;
  font-weight: 300;
  letter-spacing: -0.5px;
  color: #000;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  padding: 0 1rem;
}

/* Hamburger button - hidden by default, shown on mobile */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
}

.hamburger span {
  width: 2rem;
  height: 0.25rem;
  background-color: #000;
  transition: all 0.3s ease;
  position: relative;
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(0.45rem, 0.45rem);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(0.5rem, -0.5rem);
}

nav a {
  color: #555;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  font-size: 0.8rem;
  font-weight: 350;
  border: 1px solid transparent;
}

nav a:hover {
  color: #000;
  background-color: #f5f5f5;
  border-color: #e5e5e5;
}

nav a:focus {
  outline: 2px solid #4f46e5;
  outline-offset: 2px;
  color: #000;
  background-color: #f5f5f5;
  border-color: #4f46e5;
}

/* Main Content */
main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 1rem;
}

section {
  margin-bottom: 5rem;
  scroll-margin-top: 120px;
}

section h2 {
  color: #000;
  margin-bottom: 2rem;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  padding-top: 1em;
}

.heading-anchor {
  text-decoration: none;
  color: #000;
}

.heading-anchor:hover {
  color: #4f46e5;
}

.heading-anchor:hover::after {
  font-size: 70%;
  content: "🔗";
  margin-left: 0.25rem;
  opacity: 0.6;
  vertical-align: text-top;
}

/* Grid System for Screenshots */
/* Responsive: 1 item on mobile, 2 on tablet, 3-4 on desktop */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* Desktop: 3-6 items per row */
@media (min-width: 1200px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 900px) and (max-width: 1199px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 600px) and (max-width: 899px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile: 1 item per row */
@media (max-width: 599px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.grid-item {
  background-color: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.grid-item:hover {
  border-color: #4f46e5;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.1);
}

.grid-item a:focus {
  outline: 2px solid #4f46e5;
  outline-offset: 2px;
}

.grid-item a {
  display: block;
  text-decoration: none;
  color: inherit;
}

.grid-item-inactive {
  display: block;
  text-decoration: none;
  color: #999;
  cursor: not-allowed;
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background-color: #fafafa;
}

.grid-item p {
  padding: 1rem;
  text-align: center;
  font-weight: 400;
  color: #000;
  font-size: 0.95rem;
}

/* Table Styles for Python/Rust Tools */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

table thead {
  background-color: #fafafa;
  border-bottom: 2px solid #e5e5e5;
}

table th,
table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #f0f0f0;
  font-weight: 300;
}

table th:nth-child(1),
table td:nth-child(1) {
  width: 20%;
}

table th:nth-child(2),
table td:nth-child(2) {
  width: 60%;
}

table th:nth-child(3),
table td:nth-child(3) {
  width: 20%;
}

table th {
  font-weight: 500;
  color: #555;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

table td {
  color: #000;
}

table tbody tr:hover {
  background-color: #fafafa;
}

table a {
  color: #4f46e5;
  text-decoration: none;
  font-weight: 400;
  padding: 0.35rem 0.85rem;
  border: 1px solid #4f46e5;
  border-radius: 6px;
  display: inline-block;
  transition: all 0.2s ease;
  font-size: 0.85rem;
}

table a:hover {
  background-color: #4f46e5;
  color: #fff;
}

/* Responsive Table */
@media (max-width: 768px) {
  table {
    font-size: 0.9rem;
  }

  table th,
  table td {
    padding: 0.75rem 0.5rem;
  }

  /* Show hamburger button on mobile */
  .hamburger {
    display: flex;
  }

  header {
    position: fixed;
    width: 100%;
    height: 3em;
  }

  /* Hide nav menu by default on mobile */
  nav ul {
    position: fixed;
    left: 0;
    top: 3rem;
    flex-direction: column;
    row-gap: 1.5em;
    background-color: #fff;
    width: 100%;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid #e5e5e5;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    z-index: 999;
  }

  /* Show nav menu when active */
  nav ul.active {
    max-height: 80vh;
    overflow-y: auto;
    opacity: 1;
    padding: 2rem;
  }

  nav a {
    text-align: center;
    padding: 0.75rem 1rem;
  }
}

/* Footer */
footer {
  background-color: #fafafa;
  color: #555;
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 4rem;
  border-top: 1px solid #e5e5e5;
  font-size: 0.9rem;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}