/* PARTICLE BACKGROUND */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* BASE */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0e0e0e;
  color: #fff;
}

header {
  background: #1c1c1c;
  padding: 20px;
  text-align: center;
  font-size: 1.6rem;
  font-weight: bold;
  border-bottom: 2px solid #333;
}

/* LANDING */
.landing {
  margin-top: 60px;
  display: flex;
  justify-content: center;
  gap: 40px;
}

/* CARDS */
.choice-box {
  width: 340px;
  height: 420px;
  border-radius: 18px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  cursor: pointer;
  transition: 0.25s;
  box-shadow: 0 0 16px #0008;
  position: relative;
}

/* SHINE EFFECT */
.choice-box::after {
  content: "";
  position: absolute;
  top: -100%;
  left: -50%;
  width: 200%;
  height: 300%;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255,255,255,0.3) 50%,
    transparent 100%
  );
  transform: rotate(25deg);
  transition: 0.6s;
  opacity: 0;
}

.choice-box:hover::after {
  top: -30%;
  left: -30%;
  opacity: 1;
}

/* MOD BLUE BORDER + GLOW */
.choice-box.mod {
  border: 3px solid #2196F3;
  box-shadow: 0 0 10px #2196F3aa;
  animation: modBorder 3s infinite ease-in-out;
}

/* TESTER GREEN BORDER + GLOW */
.choice-box.tester {
  border: 3px solid #4CAF50;
  box-shadow: 0 0 10px #4CAF50aa;
  animation: testerBorder 3s infinite ease-in-out;
}

/* BORDER ANIMATIONS */
@keyframes modBorder {
  0%   { box-shadow: 0 0 10px #2196F3aa; }
  50%  { box-shadow: 0 0 18px #2196F3ff; }
  100% { box-shadow: 0 0 10px #2196F3aa; }
}

@keyframes testerBorder {
  0%   { box-shadow: 0 0 10px #4CAF50aa; }
  50%  { box-shadow: 0 0 18px #4CAF50ff; }
  100% { box-shadow: 0 0 10px #4CAF50aa; }
}

/* TEXT OVERLAY */
.overlay {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 20px;
  background: linear-gradient(transparent, #000b);
  text-align: center;
}

.overlay h3 {
  margin: 0;
  font-size: 1.4rem;
}

.desc {
  margin-top: 10px;
  font-size: 0.9rem;
  opacity: 0.9;
}

/* FORMS */
.container {
  width: 90%;
  max-width: 900px;
  margin: auto;
  margin-top: 40px;
}

form {
  background: #1a1a1a;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 0 14px #0006;
}

input, textarea, select {
  width: 100%;
  padding: 12px;
  margin-top: 6px;
  border-radius: 6px;
  background: #0f0f0f;
  color: white;
  border: 1px solid #444;
}

/* BUTTONS */
.blue-btn {
  background: #2196F3;
  padding: 12px 22px;
  margin-top: 18px;
  border-radius: 6px;
  color: white;
  border: none;
  cursor: pointer;
}

.green-btn {
  background: #4CAF50;
  padding: 12px 22px;
  margin-top: 18px;
  border-radius: 6px;
  color: white;
  border: none;
  cursor: pointer;
}

.blue-btn:hover { background: #1e87dd; }
.green-btn:hover { background: #43a047; }

/* FOOTER */
footer {
  text-align: center;
  padding: 25px;
  margin-top: 40px;
  color: #aaa;
}