:root {
  --color-bg:          #0f1117;
  --color-surface:     #1a1d27;
  --color-surface-alt: #21253a;
  --color-border:      #2b2f44;
  --color-border-light:#3a3f58;

  --color-text:        #e8eaf0;
  --color-text-muted:  #8b90a8;
  --color-text-dim:    #555c78;

  --color-primary:       #4f79f6;
  --color-primary-hover: #3d67e5;
  --color-secondary:     #2f8c6e;
  --color-secondary-hover:#27775c;

  --color-success: #2ca876;
  --color-error:   #d95757;
  --color-warning: #c8933a;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --font-base: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Fira Code", "Cascadia Code", "Consolas", monospace;

  --shadow-card: 0 1px 4px rgba(0,0,0,0.4);
  --transition:  150ms ease;
}

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

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

code, .inline-code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  color: #a8c1ff;
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-icon {
  font-size: 1.4rem;
  color: var(--color-primary);
  line-height: 1;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.brand-tag {
  font-size: 0.72rem;
  color: var(--color-text-dim);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 2px 8px;
  margin-left: 4px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.network-badge {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 3px 10px;
}

.network-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-success);
  flex-shrink: 0;
}

.wallet-info {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 4px 10px;
}

.wallet-address {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-base);
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0.5rem 1.1rem;
  transition: background-color var(--transition), opacity var(--transition);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-surface-alt);
  color: var(--color-text);
}

.btn-full { width: 100%; }

.btn-sm {
  font-size: 0.8rem;
  padding: 0.35rem 0.8rem;
}

.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.875rem;
}

.status-bar.status-pending {
  border-color: var(--color-warning);
  background: rgba(200,147,58,0.08);
  color: var(--color-warning);
}

.status-bar.status-success {
  border-color: var(--color-success);
  background: rgba(44,168,118,0.08);
  color: var(--color-success);
}

.status-bar.status-error {
  border-color: var(--color-error);
  background: rgba(217,87,87,0.08);
  color: var(--color-error);
}

.status-icon { font-size: 1rem; }

.section-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  margin-bottom: 1rem;
}

.balance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.balance-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.2rem;
}

.reserve-card {
  border-color: var(--color-border-light);
  background: var(--color-surface-alt);
}

.balance-label {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-bottom: 0.35rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.balance-value {
  font-size: 1.3rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-text);
}

.panels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.card-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-top: -0.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.form-input {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  padding: 0.55rem 0.8rem;
  width: 100%;
  transition: border-color var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
}

.form-input:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.form-input::-webkit-outer-spin-button,
.form-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.form-input[type=number]               { -moz-appearance: textfield; }

.preview-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.9rem;
  font-size: 0.82rem;
}

.preview-label { color: var(--color-text-dim); flex-shrink: 0; }

.preview-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
}

.preview-unit {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  flex-shrink: 0;
}

.about-section {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.about-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.4rem;
}

.about-heading {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.65rem;
}

.about-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hidden { display: none !important; }

::-webkit-scrollbar              { width: 6px; height: 6px; }
::-webkit-scrollbar-track        { background: var(--color-bg); }
::-webkit-scrollbar-thumb        { background: var(--color-border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover  { background: var(--color-text-dim); }

@media (max-width: 640px) {
  .header-inner { height: auto; padding: 0.75rem 1rem; flex-wrap: wrap; }
  .brand-tag    { display: none; }
  .panels-grid  { grid-template-columns: 1fr; }
  .balance-grid { grid-template-columns: 1fr 1fr; }
  .about-grid   { grid-template-columns: 1fr; }
  .site-footer  { flex-direction: column; text-align: center; }
}