:root {
  --bg-0: #0a0a0a;
  --bg-1: #111111;
  --bg-2: #161616;
  --bg-3: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --accent: #00c896;
  --accent-soft: rgba(0, 200, 150, 0.12);
  --accent-line: rgba(0, 200, 150, 0.3);
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.1);
  --text-0: #f5f5f5;
  --text-1: #b8b8b8;
  --text-2: #777777;
  --text-3: #555555;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--text-0);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0, 200, 150, 0.08), transparent),
    radial-gradient(ellipse 60% 50% at 100% 0%, rgba(139, 92, 246, 0.05), transparent);
}

code, pre { font-family: var(--font-mono); }

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

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 10, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 700; }
.brand-icon { font-size: 1.1rem; }
.brand-text { font-size: 0.95rem; letter-spacing: -0.01em; }
.header-nav { display: flex; gap: 1.4rem; font-size: 0.85rem; color: var(--text-1); }
.header-nav a { transition: color 0.2s; }
.header-nav a:hover { color: var(--accent); }

@media (max-width: 600px) {
  .brand-text { display: none; }
  .header-inner { padding: 0.8rem 1rem; }
  .header-nav { gap: 0.9rem; font-size: 0.78rem; }
}

/* PAGE */
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

/* HERO */
.hero {
  text-align: left;
  max-width: 760px;
  margin: 0 auto 3rem;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  margin-bottom: 1.2rem;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw + 1rem, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}
.hero-title span {
  background: linear-gradient(90deg, var(--accent), #6ee7b7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  color: var(--text-1);
  font-size: 1.02rem;
  max-width: 640px;
  margin-bottom: 1.4rem;
}
.hero-sub code {
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 0.05rem 0.4rem;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--accent);
}
.hero-badges { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.hero-badges .b {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  padding: 0.3rem 0.65rem;
  border-radius: 5px;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.2rem;
  margin-bottom: 3.5rem;
}
@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
}

/* PANEL */
.panel {
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  position: relative;
}
.panel-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.panel-num {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}
.panel-header h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  flex: 1;
}
.refresh {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-1);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}
.refresh:hover { border-color: var(--accent-line); color: var(--accent); }
.panel-sub { font-size: 0.83rem; color: var(--text-2); margin-bottom: 1rem; margin-top: -0.5rem; }

/* FIELDS */
.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 0.45rem;
  letter-spacing: 0.01em;
}
.hint-inline {
  display: inline-block;
  margin-left: 0.5rem;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0;
}
.field select,
.field input,
.field textarea {
  width: 100%;
  background: var(--bg-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.8rem;
  color: var(--text-0);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field select:focus,
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent-line);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.45;
}

/* ACTIONS */
.actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
}
.btn {
  font-family: var(--font-sans);
  font-size: 0.86rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.7rem 1.2rem;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.005em;
}
.btn-primary {
  background: var(--accent);
  color: #001a14;
  flex: 1;
  min-width: 140px;
}
.btn-primary:hover { background: #00d9a3; transform: translateY(-1px); }
.btn-secondary {
  background: var(--bg-3);
  color: var(--text-0);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-strong); }
.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px dashed var(--border);
  font-size: 0.78rem;
}
.btn-ghost:hover { color: var(--danger); border-color: rgba(239, 68, 68, 0.4); border-style: solid; }

/* RESULT */
.result {
  margin-top: 1.4rem;
  padding: 1rem 1.2rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-x: auto;
}
.result.valid { border-left-color: var(--accent); background: linear-gradient(90deg, var(--accent-soft), var(--bg-2) 40%); }
.result.invalid { border-left-color: var(--danger); background: linear-gradient(90deg, var(--danger-soft), var(--bg-2) 40%); }
.result-status {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.result.valid .result-status { color: var(--accent); }
.result.invalid .result-status { color: #fca5a5; }
.result-detail { color: var(--text-1); font-size: 0.8rem; }

/* LOGS */
.logs {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-height: 460px;
  overflow-y: auto;
}
.log-row {
  display: grid;
  grid-template-columns: 24px 80px 1fr auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: border-color 0.15s, background 0.15s;
}
.log-row:hover { background: var(--bg-3); border-color: var(--border); }
.log-status-valid { color: var(--accent); font-weight: 700; }
.log-status-invalid { color: #f87171; font-weight: 700; }
.log-provider {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-1);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--font-sans);
}
.log-hash { color: var(--text-3); font-size: 0.72rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.log-time { color: var(--text-2); font-size: 0.72rem; }
.logs-empty { color: var(--text-3); font-style: italic; padding: 1rem; text-align: center; }

/* META CARDS */
.meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}
.meta-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
}
.meta-card h3 {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.005em;
}
.meta-card h3 code {
  font-size: 0.88em;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
}
.meta-card p { color: var(--text-1); font-size: 0.86rem; line-height: 1.55; }
.meta-card p code {
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  font-size: 0.86em;
}

/* FOOTER */
.footer-cta {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  text-align: center;
  color: var(--text-2);
  font-size: 0.85rem;
}
.footer-cta a { color: var(--accent); transition: opacity 0.2s; }
.footer-cta a:hover { opacity: 0.8; }
.footer-mini { font-size: 0.76rem; color: var(--text-3); margin-top: 0.4rem; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }