:root {
  --bg: #08090C;
  --bg-2: #0B0D11;
  --surface: #101216;
  --surface-2: #161A20;
  --surface-3: #1D222A;
  --surface-hover: #232932;
  --border: rgba(255, 255, 255, 0.05);
  --border-2: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #ECEDEF;
  --text-2: #9CA3AF;
  --text-3: #5C6370;
  --accent: #C9A961;
  --accent-2: #D8B877;
  --accent-3: #A8893F;
  --accent-soft: rgba(201, 169, 97, 0.10);
  --accent-soft-2: rgba(201, 169, 97, 0.18);
  --success: #7BB58A;
  --danger: #D17B7B;
  --warning: #E8C547;
  --info: #6FA8B5;
  --radius: 12px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-xs: 5px;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.5), 0 2px 6px rgba(0, 0, 0, 0.3);
  --shadow-3: 0 16px 40px rgba(0, 0, 0, 0.6), 0 4px 12px rgba(0, 0, 0, 0.35);
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', Menlo, Monaco, Consolas, monospace;
}

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

html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--accent-2); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent); }

.us-logo {
  display: inline-block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
  flex-shrink: 0;
}

.us-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-xs);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  letter-spacing: -0.005em;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.08s;
  white-space: nowrap;
}

.us-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.us-btn-primary {
  background: var(--accent);
  color: #1A1A1F;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.us-btn-primary:hover:not(:disabled) {
  background: var(--accent-2);
  box-shadow: 0 2px 8px rgba(201, 169, 97, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.us-btn-primary:active:not(:disabled) { transform: translateY(1px); }

.us-btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border-2);
}
.us-btn-ghost:hover:not(:disabled) {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.us-btn-danger {
  background: rgba(209, 123, 123, 0.10);
  color: var(--danger);
  border-color: rgba(209, 123, 123, 0.25);
}
.us-btn-danger:hover:not(:disabled) {
  background: rgba(209, 123, 123, 0.18);
  border-color: rgba(209, 123, 123, 0.40);
}

.us-input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  color: var(--text);
  padding: 10px 13px;
  border-radius: var(--radius-xs);
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
  font-family: inherit;
}
.us-input::placeholder { color: var(--text-3); }
.us-input:focus {
  border-color: var(--accent);
  background: var(--surface-3);
  box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.10);
}

select.us-input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.us-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.us-msg {
  padding: 11px 14px;
  border-radius: var(--radius-xs);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 14px;
}
.us-msg-error {
  background: rgba(209, 123, 123, 0.08);
  border: 1px solid rgba(209, 123, 123, 0.25);
  color: var(--danger);
}
.us-msg-success {
  background: rgba(123, 181, 138, 0.08);
  border: 1px solid rgba(123, 181, 138, 0.25);
  color: var(--success);
}
.us-msg-info {
  background: rgba(111, 168, 181, 0.08);
  border: 1px solid rgba(111, 168, 181, 0.25);
  color: var(--info);
}

.us-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: var(--surface-3);
  color: var(--text-2);
}
.us-badge-success { background: rgba(123, 181, 138, 0.14); color: var(--success); }
.us-badge-danger  { background: rgba(209, 123, 123, 0.14); color: var(--danger); }
.us-badge-warning { background: rgba(232, 197, 71, 0.14); color: var(--warning); }
.us-badge-accent  { background: var(--accent-soft); color: var(--accent-2); }

.us-lang-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xs);
  padding: 6px 12px;
  font-size: 12.5px;
  color: var(--text-2);
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, background 0.15s;
}
.us-lang-switcher:hover {
  border-color: var(--border-strong);
  background: var(--surface-3);
  color: var(--text);
}
.us-lang-switcher svg { color: var(--text-3); transition: transform 0.2s; }
.us-lang-switcher[aria-expanded="true"] svg { transform: rotate(180deg); }

.us-lang-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 160px;
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 4px;
  box-shadow: var(--shadow-2);
  z-index: 100;
  display: none;
}
.us-lang-menu.show { display: block; animation: us-fade-in 0.15s ease; }
.us-lang-menu a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius-xs);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.us-lang-menu a:hover {
  background: var(--surface-hover);
  color: var(--text);
}
.us-lang-menu a.active {
  background: var(--accent-soft);
  color: var(--accent-2);
}
.us-lang-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 13px;
  border-radius: 2px;
  background: var(--surface-3);
  color: var(--text-3);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

@keyframes us-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.us-divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.us-code {
  font-family: var(--font-mono);
  background: var(--surface-2);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--accent-2);
  border: 1px solid var(--border-2);
}

.us-mono-block {
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xs);
  padding: 13px 15px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent-2);
  word-break: break-all;
  line-height: 1.55;
}