/* Toolkit // Clean Dark Developer Theme (Swiss Style + Dark Mode OLED) */
:root {
  --bg: #0b0f17;
  --surface: #111827;
  --surface-hover: #1f2937;
  --surface-code: #030712;
  --border: #1f2937;
  --border-focus: #10b981;
  --border-subtle: #2d3748;
  
  --text: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --accent: #10b981;
  --accent-hover: #059669;
  --accent-soft: rgba(16, 185, 129, 0.08);
  --accent-glow: rgba(16, 185, 129, 0.2);
  
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.1);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.25rem 3rem;
}

code, pre, .font-mono {
  font-family: ui-monospace, "SF Mono", "Cascadia Code", "Segoe UI Mono", Menlo, Monaco, Consolas, monospace;
}

/* App Shell */
.app-shell {
  width: 100%;
  max-width: 740px;
}

/* Header & Segmented Nav */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.brand-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Segmented Control */
.segmented-control {
  display: inline-flex;
  background: var(--surface-code);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.segment-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.86rem;
  font-weight: 500;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

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

.segment-btn.active {
  background: var(--surface);
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.segment-btn:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-copy-sm:focus-visible,
.btn-copy-lg:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Tab Panes */
.tab-pane {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
}

.tab-pane.active {
  display: flex;
}

/* Bento Cards */
.bento-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.5rem;
  transition: border-color 0.2s ease;
}

.card-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.card-caption {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  font-weight: 600;
}

.card-heading {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: 0.85rem;
}

.card-bar .card-heading {
  margin-bottom: 0;
}

.card-subtext {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Hero Epoch Card */
.hero-epoch {
  border-color: rgba(16, 185, 129, 0.22);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.04) 0%, var(--surface) 100%);
}

.epoch-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0.5rem 0 1.25rem;
  gap: 1rem;
}

.epoch-value {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.ticker-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  transition: all 0.2s ease;
}

.status-pulse.paused {
  background: var(--text-dim);
  box-shadow: none;
}

.epoch-meta {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.65rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.meta-code {
  color: var(--text);
  background: var(--surface-code);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

/* Forms & Inputs */
.form-row {
  display: flex;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.form-input {
  flex: 1;
  background: var(--surface-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92rem;
  padding: 0.65rem 0.85rem;
  outline: none;
  transition: border-color 0.15s ease;
  min-height: 44px;
}

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

.form-textarea {
  width: 100%;
  background: var(--surface-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88rem;
  padding: 0.85rem;
  outline: none;
  resize: vertical;
  margin-bottom: 0.85rem;
  transition: border-color 0.15s ease;
}

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

.output-area {
  background: #020508;
  color: var(--accent);
}

/* Buttons */
.btn-primary {
  background: var(--accent);
  color: #030712;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-subtle);
}

.btn-ghost-sm {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-ghost-sm:hover {
  color: var(--text);
  border-color: var(--border-subtle);
}

.btn-copy-lg {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: all 0.15s ease;
  min-height: 44px;
}

.btn-copy-lg:hover {
  background: rgba(16, 185, 129, 0.15);
}

.btn-copy-sm {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-copy-sm:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.09);
}

.btn-copy-sm.copied,
.btn-copy-lg.copied {
  background: var(--accent) !important;
  color: #030712 !important;
  border-color: var(--accent) !important;
}

.action-bar {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-group {
  display: flex;
  gap: 0.5rem;
}

/* Data Tables */
.data-table {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.data-table.hidden {
  display: none;
}

.data-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.88rem;
}

.row-label {
  color: var(--text-muted);
  font-size: 0.82rem;
  min-width: 130px;
}

.row-data {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex: 1;
  justify-content: flex-end;
  overflow: hidden;
}

.row-data code {
  color: var(--accent);
  background: var(--surface-code);
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  white-space: nowrap;
  overflow-x: auto;
}

/* UUID Stack */
.control-cluster {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.field-label {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.form-select {
  background: var(--surface-code);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  outline: none;
  font-size: 0.85rem;
  min-height: 40px;
}

.uuid-stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.uuid-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-code);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.uuid-entry code {
  color: var(--accent);
  font-size: 0.86rem;
}

/* SHA-256 Digest Box */
.digest-result {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--surface-code);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.digest-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.digest-value-wrap {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex: 1;
  justify-content: flex-end;
  overflow: hidden;
}

.digest-code {
  color: var(--accent);
  font-size: 0.8rem;
  word-break: break-all;
  text-align: right;
}

/* Status Badges */
.status-badge-inline {
  font-size: 0.8rem;
  font-weight: 500;
  margin-right: 0.5rem;
}

.status-badge-inline.status-ok {
  color: var(--accent);
}

.status-badge-inline.status-err {
  color: var(--danger);
}

.mt-6 {
  margin-top: 1.25rem;
}

/* Site Footer */
.site-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-divider {
  opacity: 0.5;
}

/* Reduced Motion & Responsive */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 640px) {
  body {
    padding: 1.25rem 0.85rem 2rem;
  }
  .top-nav {
    flex-direction: column;
    align-items: flex-start;
  }
  .segmented-control {
    width: 100%;
  }
  .segment-btn {
    flex: 1;
    text-align: center;
    padding: 0.5rem 0.5rem;
  }
  .epoch-value {
    font-size: 1.7rem;
  }
  .form-row {
    flex-direction: column;
  }
  .data-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
  .row-data {
    width: 100%;
    justify-content: space-between;
  }
  .digest-result {
    flex-direction: column;
    align-items: flex-start;
  }
  .digest-value-wrap {
    width: 100%;
    justify-content: space-between;
  }
}