/* ── Dashboard — base reset & variables ─────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #0f1117;
  --surface:   #1a1d27;
  --surface2:  #23273a;
  --border:    #2e3347;
  --accent:    #6c63ff;
  --accent-h:  #8b85ff;
  --text:      #e2e8f0;
  --text-muted:#8892a4;
  --danger:    #ff4d6a;
  --success:   #22d3a5;
  --warning:   #f5a623;
  --radius:    8px;
  --radius-lg: 14px;
  --font:      'Inter', system-ui, sans-serif;
  --mono:      'Fira Code', 'Cascadia Code', monospace;
  --transition:.2s ease;
}

[data-theme="light"] {
  --bg:        #f4f6fb;
  --surface:   #ffffff;
  --surface2:  #eef0f7;
  --border:    #d1d5e0;
  --text:      #1a1d27;
  --text-muted:#6b7280;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -.02em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.logo span { color: var(--text); }

.theme-toggle {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .35rem .8rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: .8rem;
  transition: var(--transition);
}

.theme-toggle:hover { background: var(--border); }

/* ── Main content ────────────────────────────────────────────────────────── */
main {
  flex: 1;
  max-width: 920px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* ── Tabs ────────────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: .25rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.75rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-bar::-webkit-scrollbar { display: none; }

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: .65rem 1.1rem;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}

.tab-btn:hover { color: var(--text); }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ── Form elements ───────────────────────────────────────────────────────── */
.field {
  margin-bottom: 1.1rem;
}

label {
  display: block;
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: .4rem;
  font-weight: 500;
}

input[type="text"],
input[type="number"],
input[type="password"],
select,
textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .6rem .85rem;
  border-radius: var(--radius);
  font-size: .9rem;
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,.18);
}

input.invalid {
  border-color: var(--danger);
}

textarea {
  font-family: var(--mono);
  font-size: .8rem;
  resize: vertical;
  min-height: 120px;
}

select { cursor: pointer; }

/* ── Checkbox group ──────────────────────────────────────────────────────── */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: .45rem;
  cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.checkbox-item span {
  font-size: .9rem;
  color: var(--text);
}

/* ── Toggle switch ───────────────────────────────────────────────────────── */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.toggle-label {
  font-size: .9rem;
  color: var(--text);
}

.toggle-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.toggle-switch input { display: none; }

.toggle-track {
  width: 40px;
  height: 22px;
  background: var(--border);
  border-radius: 11px;
  transition: background var(--transition);
}

.toggle-switch input:checked ~ .toggle-track { background: var(--accent); }

.toggle-thumb {
  position: absolute;
  left: 3px;
  top: 3px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition);
  pointer-events: none;
}

.toggle-switch input:checked ~ .toggle-thumb { transform: translateX(18px); }

/* ── Grid layout ─────────────────────────────────────────────────────────── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.4rem;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition);
  text-decoration: none;
}

.btn:active { transform: scale(.97); }

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

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

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

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

.btn-success {
  background: var(--success);
  color: #0f1117;
}

/* ── Compile section ─────────────────────────────────────────────────────── */
.compile-hero {
  text-align: center;
  padding: 2rem 0 1.5rem;
}

.compile-hero h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

.compile-hero p {
  color: var(--text-muted);
  font-size: .95rem;
  max-width: 520px;
  margin: 0 auto 1.5rem;
}

.compile-actions {
  display: flex;
  gap: .75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.output-area {
  position: relative;
}

#scriptOutput {
  font-family: var(--mono);
  font-size: .78rem;
  line-height: 1.55;
  min-height: 320px;
  background: #0d1117;
  color: #79c0ff;
  border-color: var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem;
}

[data-theme="light"] #scriptOutput {
  background: #1e1e2e;
}

.output-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: .5rem;
  margin-top: .6rem;
}

/* ── Toast ───────────────────────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem 1.25rem;
  font-size: .88rem;
  box-shadow: 0 4px 20px rgba(0,0,0,.35);
  transform: translateY(20px);
  opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  pointer-events: none;
  z-index: 999;
}

#toast.show {
  transform: translateY(0);
  opacity: 1;
}

#toast.success { border-left: 3px solid var(--success); }
#toast.error   { border-left: 3px solid var(--danger); }

/* ── Contract address validation indicator ───────────────────────────────── */
.address-wrap { position: relative; }

.address-indicator {
  position: absolute;
  right: .75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: .8rem;
}

/* ── ABI function selector ───────────────────────────────────────────────── */
#fnArgBuilder {
  margin-top: .75rem;
}

.fn-arg-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .6rem;
}

.fn-arg-row label {
  min-width: 120px;
  font-size: .82rem;
  margin-bottom: 0;
}

.fn-arg-row input { flex: 1; }

.fn-tag {
  display: inline-block;
  font-size: .7rem;
  font-family: var(--mono);
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: .15rem .5rem;
  border-radius: 4px;
  color: var(--text-muted);
  margin-left: .35rem;
}

/* ── Help text ───────────────────────────────────────────────────────────── */
.help {
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: .3rem;
}

/* ── Config JSON preview ─────────────────────────────────────────────────── */
#configPreview {
  font-family: var(--mono);
  font-size: .78rem;
  color: #a8b5c8;
  background: var(--surface2);
  border-radius: var(--radius);
  padding: .75rem;
  margin-top: .75rem;
  min-height: 60px;
  white-space: pre;
  overflow-x: auto;
}