:root {
  --bg: #e5e4df;
  --window: #f4f3ef;
  --bar: #d1cfca;
  --border: #000;
  --shadow: #999;
  --hover: #c4c2bc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  font-family: 'Inter', sans-serif;
  color: #111;
}

/* ========== NAVBAR ========== */
nav {
  background: var(--bar);
  border-bottom: 3px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 25px;
  font-family: 'Press Start 2P', cursive;
  font-size: 10px;
  position: relative;
  z-index: 100;
}

.nav-left {
  display: flex;
  gap: 12px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

nav a {
  text-decoration: none;
  color: var(--border);
  transition: all 0.2s ease;
}

nav a:hover {
  color: #666;
}

/* ========== HAMBURGER ========== */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 16px;
  cursor: pointer;
  z-index: 1100;
}

.hamburger span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--border);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ========== COMPACT RIGHT POPUP NAV ========== */
.popup-nav {
  position: fixed;
  top: 70px;
  right: 20px;
  background: var(--window);
  border: 3px solid var(--border);
  box-shadow: -5px 5px 0 var(--shadow);
  padding: 15px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(20px);
  transition: all 0.3s ease;
}

.popup-nav.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

.popup-nav a {
  font-family: 'Press Start 2P', cursive;
  font-size: 9px;
  color: var(--border);
  text-decoration: none;
  padding: 10px 14px;
  border: 2px solid var(--border);
  background: var(--bar);
  text-align: center;
  width: 160px;
  box-shadow: 3px 3px 0 var(--border);
  transition: all 0.2s ease;
}

.popup-nav a:hover {
  background: var(--hover);
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 var(--border);
}

/* ========== HEADER ========== */
header {
  border-bottom: 2px solid var(--border);
  background: #f1f0ec;
  padding: 25px 5%;
}

header h1 {
  font-family: 'Press Start 2P', cursive;
  font-size: 16px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

header p {
  max-width: 800px;
  color: #333;
  font-size: 14px;
  line-height: 1.6;
}

/* ========== CARDS ========== */
.card-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  padding: 60px 5%;
}

.card {
  background: var(--window);
  border: 3px solid var(--border);
  box-shadow: 6px 6px 0 var(--shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 8px 8px 0 var(--border);
}

.card-header {
  background: var(--bar);
  border-bottom: 2px solid var(--border);
  padding: 8px 10px;
  font-family: 'Press Start 2P', cursive;
  font-size: 9px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card h2 {
  font-family: 'Press Start 2P', cursive;
  font-size: 13px;
  margin: 20px 0 10px;
  text-transform: uppercase;
}

.card p {
  font-size: 14px;
  line-height: 1.6;
  color: #222;
}

.retro-btn {
  display: inline-block;
  padding: 8px 14px;
  background: var(--bar);
  border: 2px solid var(--border);
  font-family: 'Press Start 2P', cursive;
  font-size: 9px;
  text-decoration: none;
  color: #000;
  align-self: flex-start;
  margin-top: 15px;
  transition: all 0.2s;
  box-shadow: 2px 2px 0 var(--border);
}

.retro-btn:hover {
  background: var(--hover);
  box-shadow: 3px 3px 0 var(--border);
  transform: translateY(-2px);
}

footer {
  border-top: 2px solid var(--border);
  text-align: center;
  padding: 40px 0;
  font-size: 12px;
  color: #444;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .nav-left,
  .nav-right > a {
    display: none !important;
  }

  .hamburger {
    display: flex;
    margin-left: auto;
  }
}