:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --ok: #22c55e;
  --warn: #f59e0b;
  --err: #ef4444;
  --radius: 10px;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* Login */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.login-card h1 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.login-card p {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Layout */
.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar .brand {
  font-weight: 700;
  font-size: 0.95rem;
  padding: 8px 12px 16px;
  color: var(--accent);
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  text-align: left;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.92rem;
}

.nav-btn:hover,
.nav-btn.active {
  background: var(--surface2);
  color: var(--text);
}

.nav-btn.active {
  border-left: 3px solid var(--accent);
}

.main {
  padding: 24px 28px;
  overflow: auto;
}

.page-title {
  margin: 0 0 20px;
  font-size: 1.4rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.card .label {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 6px;
}

.card .value {
  font-size: 1.5rem;
  font-weight: 600;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.panel h2 {
  margin: 0 0 16px;
  font-size: 1rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

input,
select,
textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 0.95rem;
}

input:focus,
select:focus {
  outline: 2px solid var(--accent);
  border-color: transparent;
}

.checkbox-row {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.92rem;
  cursor: pointer;
  font-weight: 500;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-danger {
  background: transparent;
  color: var(--err);
  border: 1px solid var(--err);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.muted-hint {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 12px;
}

.settings-panel h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.form-grid .full-width {
  grid-column: 1 / -1;
}

.cf-status-box {
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
  font-size: 0.88rem;
  line-height: 1.5;
}

.cf-status-box.ok {
  border-color: rgba(34, 197, 94, 0.4);
}

.cf-status-box.err {
  border-color: rgba(239, 68, 68, 0.4);
}

.nodes-block {
  margin: 16px 0;
}

.nodes-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.nodes-block-head h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.node-row {
  display: grid;
  grid-template-columns: 1.2fr 100px 1fr 1.2fr 36px;
  gap: 10px;
  align-items: end;
  padding: 12px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface2);
}

.node-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--muted);
}

.node-row input,
.node-row select {
  font-size: 0.88rem;
}

.btn-remove-node {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--err);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.btn-remove-node:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

#btn-add-node {
  min-width: 36px;
  font-size: 1.2rem;
  line-height: 1;
  padding: 6px 12px;
}

#provision-country option {
  padding: 4px 0;
}

.verification-box {
  margin-top: 12px;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
  font-size: 0.85rem;
  white-space: pre-wrap;
  max-height: 320px;
  overflow: auto;
}

.check-pass { color: var(--ok); }
.check-warn { color: var(--warn); }
.check-fail { color: var(--err); }

select.country-select {
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .node-row {
    grid-template-columns: 1fr 1fr;
  }
  .node-row .btn-remove-node {
    grid-column: 2;
    justify-self: end;
  }
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 500;
}

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-ok {
  background: rgba(34, 197, 94, 0.2);
  color: var(--ok);
}

.badge-run {
  background: rgba(59, 130, 246, 0.2);
  color: var(--accent);
}

.badge-fail {
  background: rgba(239, 68, 68, 0.2);
  color: var(--err);
}

.badge-wait {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warn);
}

.log-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  max-height: 280px;
  overflow: auto;
  white-space: pre-wrap;
}

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: 8px;
  z-index: 100;
  animation: fade 0.2s;
}

@keyframes fade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}