:root {
  --ink: #10162A;
  --ink-raised: #171F38;
  --hairline: #2A3354;
  --text: #E8EAF3;
  --text-dim: #8A91B0;
  --emerald: #3ED9A0;
  --amber: #E8A33D;
  --coral: #E86A6A;
  --font-sans: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
}

.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* Rail */
.rail {
  background: #0B0F1F;
  border-right: 1px solid var(--hairline);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 40px;
}
.brand-logo {
  width: 100%;
  max-width: 168px;
  background: #FFFFFF;
  border-radius: 10px;
  padding: 10px 12px;
}

.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
  text-align: left;
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
}
.nav-item:hover { background: var(--ink-raised); color: var(--text); }
.nav-item.active {
  background: var(--ink-raised);
  color: var(--emerald);
  font-weight: 500;
}

.conn {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}
.conn-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber);
}
.conn-dot.ok { background: var(--emerald); }
.conn-dot.bad { background: var(--coral); }

/* Main */
.main { padding: 40px 56px; max-width: 900px; }

.view { display: none; }
.view.active { display: block; }

.view-head { margin-bottom: 32px; }
.view-head h1 {
  font-family: var(--font-mono);
  font-size: 22px;
  margin: 0 0 6px;
}
.view-head p { color: var(--text-dim); margin: 0; font-size: 14px; }

.card-form, .inline-form {
  background: var(--ink-raised);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.inline-form {
  flex-direction: row;
  align-items: flex-end;
  gap: 20px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.card-form h2 {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
}
.login-form {
  width: 320px;
  max-width: 90vw;
}
.login-form .brand-logo { max-width: 140px; margin-bottom: 4px; }
.login-form h2 { font-family: var(--font-sans); text-transform: none; letter-spacing: normal; color: var(--text); font-size: 18px; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}

input, select {
  background: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
}
input:focus, select:focus {
  outline: 2px solid var(--emerald);
  outline-offset: 1px;
}

.btn-row { display: flex; gap: 12px; }

.checkbox-row {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  color: var(--text);
}
.checkbox-row input { width: auto; }

.save-card-fields {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 4px;
  border-left: 2px solid var(--hairline);
  padding: 4px 0 4px 16px;
}

.list { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.list-item {
  background: var(--ink-raised);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}
.list-item-meta { display: flex; flex-direction: column; gap: 2px; }
.list-item-meta .primary { color: var(--text); }
.list-item-meta .secondary { color: var(--text-dim); font-family: var(--font-mono); font-size: 12px; }
.list-item-actions { display: flex; gap: 8px; }
.list-item-actions .btn { padding: 6px 12px; font-size: 13px; }

.btn {
  background: var(--ink);
  border: 1px solid var(--hairline);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { border-color: var(--text-dim); }
.btn.primary { background: var(--emerald); color: #06251A; border-color: var(--emerald); }
.btn.danger { background: transparent; color: var(--coral); border-color: var(--coral); }

.result {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  white-space: pre-wrap;
  background: #0B0F1F;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 16px;
  max-height: 400px;
  overflow: auto;
  color: var(--text-dim);
}
.result:empty { display: none; }
.result.ok { color: var(--emerald); }
.result.bad { color: var(--coral); }

@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .rail { flex-direction: row; overflow-x: auto; }
  .split, .inline-form { grid-template-columns: 1fr; flex-direction: column; align-items: stretch; }
  .main { padding: 24px; }
}