:root {
  --bg-color: #001f3f;
  --text-color: #7f8c8d;
  --text-decrypted: #ecf0f1;
  --accent-color: #2ecc71;
  --accent-glow: rgba(46, 204, 113, 0.5);
  --btn-bg-1: #1a252f;
  --btn-bg-2: #2c3e50;
  --btn-border: #000;
  --btn-border-light: #4a627a;
  --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: 1.6;
  overflow-x: hidden;
}

.vault-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
}

h1, h2, h3 {
  color: var(--text-color);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--btn-bg-2);
  padding-bottom: 10px;
}

h1 {
  font-size: 2.5rem;
  border-bottom: 2px solid var(--btn-bg-2);
}

.subdomain {
  font-size: 1.2rem;
  opacity: 0.7;
}

p {
  margin-bottom: 15px;
}

ul {
  list-style-type: none;
  margin-bottom: 20px;
}

li {
  margin-bottom: 10px;
}

.cypher {
  transition: color 0.1s ease, text-shadow 0.1s ease;
}

.cypher.decrypted {
  color: var(--text-decrypted) !important;
  text-shadow: 0 0 5px rgba(236, 240, 241, 0.5);
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

nav li {
  margin: 0;
}

.hw-key-btn, 
nav a, 
.link-item, 
.donate-link, 
.extension-link,
.footer-link,
#services-container a {
  display: inline-block;
  background: linear-gradient(145deg, var(--btn-bg-1), var(--btn-bg-2));
  border: 1px solid var(--btn-border);
  border-top: 1px solid var(--btn-border-light);
  border-left: 1px solid var(--btn-border-light);
  border-radius: 6px;
  padding: 10px 20px 10px 35px;
  color: var(--text-color);
  text-decoration: none;
  font-family: var(--font-mono);
  text-transform: uppercase;
  position: relative;
  box-shadow: 3px 3px 6px #000b18, -1px -1px 4px #1a2a3a;
  transition: all 0.2s ease;
  overflow: hidden;
  margin: 5px 0;
}

.hw-key-btn::before,
nav a::before,
.link-item::before,
.donate-link::before,
.extension-link::before,
.footer-link::before,
#services-container a::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: repeating-linear-gradient(
    90deg,
    #d4af37,
    #d4af37 2px,
    #aa8c2c 2px,
    #aa8c2c 4px
  );
  border-radius: 2px;
  box-shadow: inset 0 0 2px rgba(0,0,0,0.5);
}

.hw-key-btn::after,
nav a::after,
.link-item::after,
.donate-link::after,
.extension-link::after,
.footer-link::after,
#services-container a::after {
  content: '';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #e74c3c;
  box-shadow: 0 0 4px #e74c3c;
  transition: all 0.2s ease;
}

.hw-key-btn:hover,
nav a:hover,
.link-item:hover,
.donate-link:hover,
.extension-link:hover,
.footer-link:hover,
#services-container a:hover {
  background: linear-gradient(145deg, var(--btn-bg-2), var(--btn-bg-1));
  transform: translateY(1px);
  box-shadow: 1px 1px 3px #000b18, -1px -1px 2px #1a2a3a;
  color: var(--text-decrypted);
}

.hw-key-btn:hover::after,
nav a:hover::after,
.link-item:hover::after,
.donate-link:hover::after,
.extension-link:hover::after,
.footer-link:hover::after,
#services-container a:hover::after {
  background: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-color), 0 0 12px var(--accent-color);
}

.hw-key-btn, nav a, .link-item, .donate-link, .extension-link, .footer-link, #services-container a {
  padding-right: 30px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

details {
  background: rgba(26, 37, 47, 0.5);
  border: 1px solid var(--btn-border-light);
  border-radius: 4px;
  margin-bottom: 20px;
  padding: 10px;
}

summary {
  cursor: pointer;
  font-weight: bold;
  color: var(--text-decrypted);
  outline: none;
}

.content {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px dashed var(--btn-border-light);
}

.contact-item {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.contact-label {
  display: inline-block;
  width: 80px;
  color: var(--text-decrypted);
  font-weight: bold;
}

.contact-item a {
  color: var(--text-color);
  text-decoration: none;
  border-bottom: 1px dashed var(--text-color);
  transition: color 0.2s;
}

.contact-item a:hover {
  color: var(--text-decrypted);
  border-bottom-color: var(--text-decrypted);
}

.crypto-item {
  background: rgba(0, 0, 0, 0.2);
  padding: 15px;
  border-radius: 4px;
  margin-bottom: 15px;
  border-left: 3px solid var(--btn-border-light);
}

.crypto-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--text-decrypted);
}

.crypto-address {
  display: block;
  word-break: break-all;
  background: #000;
  padding: 10px;
  border-radius: 4px;
  color: var(--accent-color);
  font-size: 0.9rem;
}

.checksum-validation {
  position: absolute;
  background: rgba(0, 31, 63, 0.95);
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  pointer-events: none;
  z-index: 9999;
  box-shadow: 0 0 10px var(--accent-glow);
  transform: translate(-50%, -100%);
  white-space: nowrap;
  animation: fadeIn 0.1s ease-out;
}

.checksum-validation .spinner {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 2px solid var(--accent-color);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.5s linear infinite;
  vertical-align: middle;
  margin-right: 5px;
}

.checksum-validation.success {
  color: var(--text-decrypted);
  border-color: var(--text-decrypted);
  box-shadow: 0 0 10px rgba(236, 240, 241, 0.5);
}

.checksum-validation .check {
  display: inline-block;
  margin-right: 5px;
  font-weight: bold;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translate(-50%, -90%); }
  to { opacity: 1; transform: translate(-50%, -100%); }
}

footer {
  margin-top: 60px;
  text-align: center;
  border-top: 1px solid var(--btn-bg-2);
  padding-top: 20px;
}

footer a {
  color: var(--text-color);
  text-decoration: none;
}

footer a:hover {
  color: var(--text-decrypted);
  text-decoration: underline;
}