:root {
  --bg-color: #e0e0e0;
  --text-color: #1a1a1a;
  --border-color: #1a1a1a;
  --packet-bg: #f0f0f0;
  --highlight-bg: #cccccc;
  --font-mono: "Courier New", Courier, monospace;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-mono);
  line-height: 1.4;
  padding: 10px;
  max-width: 800px;
  margin: 0 auto;
  font-size: 14px;
}

/* Node Status Dashboard */
.node-status {
  border: 2px solid var(--border-color);
  background-color: var(--packet-bg);
  padding: 8px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  font-weight: bold;
  text-transform: uppercase;
  font-size: 12px;
  border-bottom: 4px solid var(--border-color);
}

.node-status span {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* 1-bit Icons using CSS */
.icon-batt::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 10px;
  border: 2px solid var(--border-color);
  position: relative;
}
.icon-batt::after {
  content: "";
  position: absolute;
  width: 2px;
  height: 4px;
  background: var(--border-color);
  right: -4px;
  top: 50%;
  transform: translateY(-50%);
}

.icon-sig::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background: 
    linear-gradient(to top right, transparent 48%, var(--border-color) 48%, var(--border-color) 52%, transparent 52%),
    linear-gradient(to top left, transparent 48%, var(--border-color) 48%, var(--border-color) 52%, transparent 52%);
  border-bottom: 2px solid var(--border-color);
}

.icon-sol::before {
  content: "☼";
  font-size: 16px;
  line-height: 1;
}

/* Packets */
.packet {
  border: 2px solid var(--border-color);
  background-color: var(--packet-bg);
  margin-bottom: 15px;
  padding: 15px;
  position: relative;
}

.packet::before {
  content: "[PKT_START]";
  position: absolute;
  top: -8px;
  left: 10px;
  background: var(--bg-color);
  padding: 0 5px;
  font-size: 10px;
  font-weight: bold;
}

.packet::after {
  content: "[PKT_END]";
  display: block;
  text-align: right;
  font-size: 10px;
  font-weight: bold;
  margin-top: 10px;
  border-top: 1px dashed var(--border-color);
  padding-top: 5px;
}

h1, h2, h3 {
  text-transform: uppercase;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 5px;
  margin-bottom: 10px;
  font-size: 1.2em;
}

h1 {
  font-size: 1.5em;
  text-align: center;
  border-bottom: 4px solid var(--border-color);
}

a {
  color: var(--text-color);
  text-decoration: none;
  border-bottom: 1px solid var(--text-color);
  font-weight: bold;
}

a:hover {
  background-color: var(--text-color);
  color: var(--bg-color);
}

ul {
  list-style-type: square;
  padding-left: 20px;
  margin-bottom: 10px;
}

li {
  margin-bottom: 5px;
}

/* Navigation */
nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  border: 2px solid var(--border-color);
  padding: 10px;
  background: var(--packet-bg);
  margin-bottom: 20px;
}

nav a {
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  text-decoration: none;
}

/* Details / Summary */
details {
  border: 1px dashed var(--border-color);
  padding: 10px;
  margin-top: 10px;
}

summary {
  cursor: pointer;
  font-weight: bold;
}

/* Services Grid */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
}

@media (min-width: 600px) {
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Service Cards */
.service-card {
  border: 2px solid var(--border-color);
  padding: 10px;
  background: var(--bg-color);
}

.service-card h3 {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 5px;
  font-size: 1em;
}

.service-card p {
  font-size: 0.9em;
  margin-bottom: 10px;
}

.service-card a {
  display: inline-block;
  border: 1px solid var(--border-color);
  padding: 2px 5px;
  font-size: 0.8em;
}

/* Footer */
footer {
  text-align: center;
  margin-top: 20px;
  padding-top: 10px;
  border-top: 2px solid var(--border-color);
  font-size: 0.9em;
}

/* Images / QR */
img {
  max-width: 100%;
  filter: grayscale(100%) contrast(200%);
}

.qr-container {
  border: 2px solid var(--border-color);
  padding: 5px;
  margin-top: 10px;
  display: inline-block;
}

.crypto-address {
  display: block;
  word-break: break-all;
  background: var(--highlight-bg);
  padding: 5px;
  margin: 5px 0;
  border: 1px solid var(--border-color);
}

.contact-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border-color);
  padding: 2px 0;
}

.contact-label {
  font-weight: bold;
}

.link-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-link {
  border: 1px solid var(--border-color);
  padding: 2px 5px;
}

#ddate {
  text-align: right;
  font-size: 0.8em;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 5px;
}