:root {
  --bg-body: #f4f5f8;
  --bg-card: #ffffff;
  --text-h1: #111827;
  --text-main: #1f2937;
  --text-sub: #6b7280;
  --border-soft: rgba(0, 0, 0, 0.06);
  --primary: #0f172a;
  --btn-bg: #f3f4f6;
  --btn-bg-hover: #e5e7eb;
  --radius-card: 20px;
  --radius-btn: 12px;
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 10px 15px -3px rgba(0, 0, 0, 0.02);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --details-bg: #fafafa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #0f1115;
    --bg-card: #181b21;
    --text-h1: #f3f4f6;
    --text-main: #d1d5db;
    --text-sub: #9ca3af;
    --border-soft: rgba(255, 255, 255, 0.08);
    --primary: #3b82f6;
    --btn-bg: #272a30;
    --btn-bg-hover: #374151;
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --details-bg: #13151a;
  }

  .filter-btn.active {
    box-shadow: 0 4px 16px -4px rgba(59, 130, 246, 0.3);
  }

  .card:hover,
  .node-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  padding: 24px 20px 40px;
  max-width: 1000px;
  margin: 0 auto;
  line-height: 1.5;
  transition: background-color 0.3s;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.header {
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.header-title-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-icon {
  color: var(--primary);
  width: 28px;
  height: 28px;
}

.header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-h1);
  letter-spacing: -0.5px;
}

.header-desc {
  font-size: 14px;
  color: var(--text-sub);
}

.filters {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.filters::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  background: var(--btn-bg);
  border: none;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.filter-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 16px -4px rgba(15, 23, 42, 0.25);
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 36px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.card:hover,
.node-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.08), 0 4px 8px -3px rgba(0, 0, 0, 0.04);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card-main {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.title-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-h1);
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-desc {
  font-size: 13px;
  color: var(--text-sub);
}

.tag-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tag {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 8px;
  background: var(--btn-bg);
  color: var(--text-sub);
}

.tag-auth {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.tag-api {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
}

.card-summary {
  font-size: 13px;
  color: var(--text-sub);
}

.card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  align-items: center;
  border-top: 1px solid var(--border-soft);
  padding-top: 16px;
  margin-top: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  text-decoration: none;
  background: var(--btn-bg);
  color: var(--text-main);
  transition: var(--transition);
}

.btn:active {
  transform: scale(0.96);
}

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

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

.btn-primary:hover {
  background: var(--text-h1);
  color: var(--bg-card);
}

.card-details {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  background: var(--details-bg);
  border-top: 1px solid transparent;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease-in-out, border-color 0.3s ease;
}

.card-details.show {
  opacity: 1;
  border-top-color: var(--border-soft);
}

.details-inner {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.url-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.url-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.url-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.url-value {
  font-size: 12px;
  color: var(--text-sub);
  font-family: ui-monospace, monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.url-btn-group {
  display: flex;
  gap: 6px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 8px;
}

.lucide {
  width: 1.1em;
  height: 1.1em;
  stroke-width: 2.2;
}

.btn-icon-only {
  padding: 6px;
  border-radius: 8px;
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-sub);
  margin: 0 0 16px 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-icon {
  width: 1.2em;
  height: 1.2em;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.node-card {
  background: var(--bg-card);
  padding: 16px;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-soft);
  position: relative;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.node-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-h1);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.node-ip {
  font-size: 13px;
  font-family: ui-monospace, monospace;
  color: #3b82f6;
  margin-bottom: 8px;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.node-desc {
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.4;
}

.node-copy {
  position: absolute;
  top: 12px;
  right: 12px;
  background: transparent;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  cursor: pointer;
  transition: var(--transition);
}

.node-copy:hover {
  background: var(--btn-bg);
  color: var(--text-main);
}

#toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1f2937;
  color: #fff;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  z-index: 1000;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast-icon {
  color: #4ade80;
}

@media (min-width: 600px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .node-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 900px) {
  .service-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 599px) {
  body {
    padding: 20px 16px 34px;
  }

  .header {
    margin-bottom: 22px;
  }

  .header h1 {
    font-size: 26px;
  }

  .card-main {
    padding: 18px;
  }

  .card-header {
    flex-direction: column;
  }

  .tag-group {
    justify-content: flex-start;
  }

  .card-actions {
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .btn {
    min-width: 92px;
  }

  .btn-primary {
    margin-left: auto;
  }

  .url-row {
    align-items: flex-start;
  }

  .url-value {
    white-space: normal;
    overflow: visible;
    text-overflow: initial;
    word-break: break-all;
  }
}