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

/* Light theme (default) */
:root {
  --bg:        #f5f6fa;
  --bg2:       #ffffff;
  --bg3:       #dcdde1;
  --fg:        #2f3640;
  --fg2:       #718093;
  --accent:    #217a47;
  --accent2:   #6c5ce7;
  --accent-bg: rgba(33,122,71,.1);
  --btn-fg:    #ffffff;
  --green:     #27ae60;
  --orange:    #e67e22;
  --red:       #e74c3c;
  --blue:      #2980b9;
  --purple:    #6c5ce7;
  --gray:      #95a5a6;
  --radius:    6px;
  --font:      'Segoe UI', system-ui, sans-serif;
  --mono:      'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

/* Dark theme */
[data-theme="dark"] {
  --bg:        #1a1a2e;
  --bg2:       #16213e;
  --bg3:       #0f3460;
  --fg:        #e8e8e8;
  --fg2:       #a8a8c0;
  --accent:    #d4952a;
  --accent2:   #533483;
  --accent-bg: rgba(212,149,42,.1);
  --btn-fg:    #ffffff;
  --green:     #4caf50;
  --orange:    #ff9800;
  --red:       #f44336;
  --blue:      #2196f3;
  --purple:    #9c7cf4;
  --gray:      #888;
}

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
}

/* ─── Header ─────────────────────────────────────────────── */
#menu-toggle,
#server-toggle { display: none; }
#header {
  background: var(--bg2);
  border-bottom: 2px solid var(--bg3);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
#header-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}
#header-node {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
#header-node label { color: var(--fg2); font-size: .9rem; }

#node-select {
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--accent2);
  border-radius: var(--radius);
  padding: 5px 10px;
  font-size: .9rem;
  cursor: pointer;
  max-width: 280px;
}
#node-select option { background: var(--bg2); }

#custom-node-input {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--accent2);
  border-radius: var(--radius);
  padding: 5px 10px;
  font-size: .9rem;
  width: 240px;
}
#custom-node-input::placeholder { color: var(--gray); }

#header-node button {
  background: var(--accent2);
  color: var(--btn-fg);
  border: none;
  border-radius: var(--radius);
  padding: 5px 12px;
  cursor: pointer;
  font-size: .85rem;
  transition: background .2s;
}
#header-node button:hover { background: var(--accent); }
#remove-node-btn:hover { background: var(--red); }
#check-nodes-btn { background: var(--bg3); border: 1px solid var(--accent2); }
#check-nodes-btn:hover { background: var(--accent2); }
#check-nodes-btn:disabled { opacity: .55; cursor: not-allowed; }

/* Button row: transparent wrapper on desktop */
.node-btn-row { display: contents; }

/* ─── Theme toggle ──────────────────────────────────────── */
#theme-toggle {
  margin-left: auto;
  display: flex;
  gap: 4px;
}
#theme-toggle a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 1.1rem;
  color: var(--fg2);
  background: transparent;
  border: 1px solid transparent;
  transition: background .2s, color .2s, border-color .2s;
}
#theme-toggle a:hover {
  background: var(--bg3);
  color: var(--fg);
}
#theme-toggle a.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--bg);
}

/* ─── Node status panel ──────────────────────────────────── */
#node-status-panel {
  background: var(--bg2);
  border-bottom: 2px solid var(--bg3);
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
#node-status-panel.hidden { display: none; }
.panel-close-btn {
  position: absolute;
  top: 8px;
  right: 12px;
  background: none;
  border: none;
  color: var(--fg2);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 2px 8px;
  border-radius: var(--radius);
  transition: color .2s, background .2s;
}
.panel-close-btn:hover { color: var(--red); background: rgba(244,67,54,.08); }
#node-status-panel { position: relative; padding-right: 40px; }

.node-card {
  background: var(--bg);
  border: 1px solid var(--bg3);
  border-radius: var(--radius);
  padding: 10px 14px;
  min-width: 220px;
  flex: 1 1 220px;
  max-width: 360px;
  cursor: pointer;
  transition: border-color .2s;
}
.node-card:hover { border-color: var(--accent2); }
.node-card.node-ok { border-left: 3px solid var(--green); }
.node-card.node-err { border-left: 3px solid var(--red); }
.node-card.node-checking { border-left: 3px solid var(--orange); }
.node-card.node-best { border-color: var(--green); box-shadow: 0 0 0 1px var(--green); }

.node-card-url {
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--fg);
  margin-bottom: 6px;
  word-break: break-all;
}
.node-card-info {
  display: flex;
  gap: 12px;
  font-size: .78rem;
  color: var(--fg2);
}
.node-card-info span { white-space: nowrap; }
.node-latency { color: var(--green); font-weight: 600; }
.node-block   { color: var(--blue); }
.node-error   { color: var(--red); }
.node-checking-text { color: var(--orange); font-style: italic; }

/* ─── App layout ─────────────────────────────────────────── */
#app {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ─── Sidebar ────────────────────────────────────────────── */
#sidebar {
  background: var(--bg2);
  border-right: 2px solid var(--bg3);
  width: 260px;
  min-width: 200px;
  overflow-y: auto;
  padding: 12px 0;
  flex-shrink: 0;
}
.sidebar-section-title {
  font-size: .75rem;
  text-transform: uppercase;
  color: var(--gray);
  letter-spacing: .06em;
  padding: 10px 16px 4px;
}
.sidebar-item {
  display: block;
  padding: 7px 16px 7px 20px;
  color: var(--fg2);
  text-decoration: none;
  font-size: .9rem;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background .15s, border-color .15s, color .15s;
}
.sidebar-item:hover {
  background: var(--bg3);
  color: var(--fg);
}
.sidebar-item.active {
  border-left-color: var(--accent);
  color: var(--fg);
  background: var(--accent-bg);
}
.sidebar-plugin {
  font-weight: 600;
  color: var(--fg);
  padding-left: 16px;
}
.sidebar-method {
  padding-left: 32px;
  font-family: var(--mono);
  font-size: .82rem;
}

/* ─── Content ────────────────────────────────────────────── */
#content {
  flex: 1;
  overflow-y: auto;
  padding: 24px 32px;
}
#content-main { min-height: 80px; }

.welcome-title { font-size: 1.6rem; margin-bottom: 8px; color: var(--accent); }
.welcome-sub   { color: var(--fg2); font-size: .95rem; }

/* Plugin / Method headers */
.page-title {
  font-size: 1.4rem;
  margin-bottom: 6px;
  color: var(--fg);
}
.plugin-badge {
  display: inline-block;
  background: var(--accent2);
  color: var(--btn-fg);
  font-size: .78rem;
  padding: 2px 9px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.method-desc {
  color: var(--fg2);
  font-size: .9rem;
  margin-bottom: 14px;
  line-height: 1.5;
}
.method-list-desc {
  color: var(--fg2);
  font-size: .78rem;
  margin-top: 3px;
  line-height: 1.4;
  opacity: .85;
}
.field-hint {
  color: var(--fg2);
  font-size: .78rem;
  margin-bottom: 5px;
  opacity: .8;
  font-style: italic;
}

/* Method form */
.method-form { margin-top: 16px; }
.field-group {
  margin-bottom: 12px;
}
.field-label {
  display: block;
  font-size: .85rem;
  color: var(--fg2);
  margin-bottom: 4px;
  font-family: var(--mono);
}
.field-input {
  width: 100%;
  max-width: 480px;
  background: var(--bg2);
  color: var(--fg);
  border: 1px solid var(--accent2);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: .9rem;
  font-family: var(--mono);
  transition: border-color .2s;
}
.field-input:focus {
  outline: none;
  border-color: var(--accent);
}
.field-input::placeholder { color: var(--gray); }

/* Multi-input (array params) */
.multi-input-wrap {
  max-width: 480px;
}
.multi-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}
.multi-input-row .field-input {
  flex: 1;
  max-width: none;
}
.multi-input-row .mi-remove {
  background: none;
  border: none;
  color: var(--gray);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
  border-radius: var(--radius);
  transition: color .15s, background .15s;
}
.multi-input-row .mi-remove:hover { color: var(--red); background: rgba(244,67,54,.1); }
.array-badge {
  display: inline-block;
  background: var(--bg3);
  color: var(--fg2);
  font-size: .7rem;
  font-family: var(--mono);
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
}

#execute-btn {
  margin-top: 16px;
  background: var(--accent);
  color: var(--btn-fg);
  border: none;
  border-radius: var(--radius);
  padding: 9px 28px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .1s;
}
#execute-btn:hover    { filter: brightness(.85); }
#execute-btn:active   { transform: scale(.97); }
#execute-btn:disabled { opacity: .55; cursor: not-allowed; }

/* ─── Response area ──────────────────────────────────────── */
#response-area { margin-top: 28px; }

.response-label {
  font-size: .85rem;
  color: var(--fg2);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 6px;
}
.response-box {
  background: var(--bg2);
  border: 1px solid var(--bg3);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: .85rem;
  line-height: 1.55;
  white-space: pre;
  max-height: 600px;
  overflow-y: auto;
}
.response-error {
  background: rgba(244,67,54,.1);
  border-color: var(--red);
  color: var(--red);
}
.response-loading {
  color: var(--fg2);
  font-style: italic;
}

/* Request block */
.request-box {
  margin-bottom: 1em;
}

/* JSON syntax */
.json-key    { color: var(--purple); }
.json-string { color: var(--green); }
.json-number { color: var(--orange); }
.json-bool   { color: var(--blue); }
.json-null   { color: var(--gray); font-style: italic; }
.json-brace  { color: var(--fg2); }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent2); }

/* ─── Mobile (≤768px) ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {

  /* Header: compact row — [☰] [Brand] ... [⚙] [theme] */
  #header {
    padding: 8px 12px;
    gap: 10px;
    flex-wrap: nowrap;
    position: relative;
    z-index: 201;
  }
  #header-brand { font-size: 1rem; flex: 1; overflow: hidden; text-overflow: ellipsis; }

  /* Hamburger + server toggle: visible on mobile */
  #menu-toggle,
  #server-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid var(--bg3);
    border-radius: var(--radius);
    color: var(--fg);
    font-size: 1.3rem;
    width: 36px;
    height: 36px;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color .2s, color .2s;
  }
  #menu-toggle:hover,
  #server-toggle:hover { border-color: var(--accent); color: var(--accent); }
  #server-toggle.node-active {
    border-color: var(--accent);
    color: var(--accent);
  }

  /* Node panel: hidden by default, drops down when .open */
  #header-node {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg2);
    border-bottom: 2px solid var(--bg3);
    padding: 14px;
    flex-direction: column;
    gap: 10px;
    z-index: 200;
    box-shadow: 0 8px 24px rgba(0,0,0,.15);
  }
  #header-node.open { display: flex; }
  #header-node label { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--fg2); }
  #node-select {
    width: 100%;
    max-width: none;
    padding: 9px 12px;
    font-size: .88rem;
  }
  #custom-node-input {
    width: 100%;
    padding: 9px 12px;
  }
  #header-node button {
    width: 100%;
    padding: 9px 12px;
    font-size: .85rem;
    text-align: center;
  }
  .node-btn-row {
    display: flex;
    gap: 10px;
    width: 100%;
  }
  .node-btn-row button {
    flex: 1;
    width: auto;
  }

  /* Sidebar: fixed overlay drawer */
  #sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(280px, 82vw);
    z-index: 300;
    transform: translateX(-100%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    box-shadow: none;
    padding-top: 60px; /* room for header */
  }
  #sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,.25);
  }

  /* Backdrop */
  #sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 299;
    opacity: 0;
    pointer-events: none;
    transition: opacity .28s;
  }
  #sidebar-backdrop.open {
    opacity: 1;
    pointer-events: auto;
  }

  /* Lock body scroll when sidebar open */
  body.sidebar-open { overflow: hidden; }

  /* Content: full width, reduced padding */
  #content {
    padding: 16px;
  }

  /* Node status panel: stack cards */
  #node-status-panel {
    padding: 10px 12px;
    gap: 8px;
  }
  .node-card {
    min-width: 0;
    max-width: none;
    flex: 1 1 100%;
  }

  /* Inputs: remove max-width on mobile */
  .field-input,
  .multi-input-wrap {
    max-width: none;
  }

  /* Response boxes: shorter */
  .response-box {
    max-height: 320px;
    font-size: .78rem;
    padding: 12px;
  }

  /* Welcome + page titles smaller */
  .welcome-title { font-size: 1.3rem; }
  .page-title    { font-size: 1.15rem; }
}