* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, sans-serif;
}

body {
  background: #000;
  color: #fff;
  padding-bottom: 80px;
}

.header {
  padding: 20px;
  border-bottom: 1px solid #222;
}

.header h1 {
  font-size: 26px;
}

.header p {
  color: #aaa;
  margin-top: 4px;
}

.card {
  margin: 16px;
  padding: 18px;
  background: #111;
  border-radius: 14px;
  border: 1px solid #222;
}

.card h3 {
  font-size: 18px;
}

.card span {
  color: #aaa;
}

.locked {
  cursor: pointer;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #0a0a0a;
  display: flex;
  justify-content: space-around;
  padding: 14px 0;
  border-top: 1px solid #222;
}

.bottom-nav button {
  background: none;
  border: none;
  color: #aaa;
  font-size: 14px;
}

.bottom-nav button:hover {
  color: #0f0;
}

/* MODAL */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hidden {
  display: none;
}

.modal-box {
  background: #111;
  padding: 24px;
  border-radius: 14px;
  width: 85%;
  max-width: 360px;
  text-align: center;
}

.modal-box p {
  margin-bottom: 16px;
}

.primary {
  width: 100%;
  padding: 14px;
  background: #0f0;
  color: #000;
  border: none;
  border-radius: 10px;
  font-size: 16px;
}

.secondary {
  margin-top: 10px;
  background: none;
  color: #aaa;
  border: none;
}