/**
 * assets/css/tools.css
 * Styles for all 7 interactive tool iframes.
 * Tokens are aligned to the main app's cyber-academy system (assets/css/main.css)
 * so embedded tools read as one product, not a separate one.
 */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Manrope:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* === Tool Chrome (shared by all tools) === */
:root {
  --tool-bg-primary:   #071015;
  --tool-bg-secondary: #0d1c22;
  --tool-bg-tertiary:  #132730;
  --tool-bg-elevated:  #173441;
  --tool-accent-green:  #c8ff22;
  --tool-accent-blue:   #5ae3ff;
  --tool-accent-yellow: #ffd166;
  --tool-accent-red:    #ff6b6b;
  --tool-accent-purple: #4fc1d6;
  --tool-text-primary:   #ecf8f7;
  --tool-text-secondary: #acd0d7;
  --tool-text-muted:     #7ea4aa;
  --tool-border: #2f525e;
  --tool-font:    'Manrope', 'Segoe UI', system-ui, sans-serif;
  --tool-display: 'Syne', 'Segoe UI', sans-serif;
  --tool-mono:    'IBM Plex Mono', 'Consolas', 'Monaco', monospace;
  --tool-radius:    10px;
  --tool-radius-sm: 6px;
  --tool-glow-green: 0 0 22px rgba(200, 255, 34, 0.28);
  --tool-glow-red:   0 0 22px rgba(255, 107, 107, 0.30);
  --tool-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* hidden attribute must win over component display rules */
[hidden] { display: none !important; }

/* Visible keyboard focus for every interactive control across all tools */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--tool-accent-blue);
  outline-offset: 2px;
  border-radius: var(--tool-radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .tool-shell * {
    animation: none !important;
    transition: none !important;
  }
}

body.tool-body {
  margin: 0;
  padding: 16px;
  background: var(--tool-bg-primary);
  color: var(--tool-text-primary);
  font-family: var(--tool-font);
  min-height: 100vh;
}

.tool-intro {
  margin: 0 0 14px;
  color: var(--tool-text-secondary);
  max-width: 72ch;
}

.tool-shell {
  display: grid;
  gap: 12px;
  padding: 12px;
  background: linear-gradient(180deg, rgba(13, 28, 34, 0.95), rgba(7, 16, 21, 0.9));
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
}

.lab-section {
  border: 1px solid rgba(90, 227, 255, 0.25);
  border-radius: var(--tool-radius);
  padding: 12px;
  background: rgba(10, 25, 32, 0.72);
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-block-end: 16px;
  padding-block-end: 12px;
  border-block-end: 1px solid var(--tool-border);
}

.tool-header h1 {
  margin: 0;
  font-family: var(--tool-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--tool-accent-green);
}

.tool-header .tool-icon { font-size: 1.5rem; }

.tool-section {
  background: var(--tool-bg-secondary);
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  padding: 16px;
  margin-block-end: 16px;
}

.tool-section h2 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--tool-text-secondary);
  text-transform: uppercase;
  letter-spacing: .05em;
  font-size: .8rem;
}

.tool-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-block-end: 10px;
}

/* Inputs */
.tool-input, .tool-textarea, .tool-select {
  background: var(--tool-bg-tertiary);
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  color: var(--tool-text-primary);
  font-family: var(--tool-font);
  padding: 8px 12px;
  font-size: .9rem;
  outline: none;
  transition: border-color .2s;
}

.tool-input:focus, .tool-textarea:focus, .tool-select:focus {
  border-color: var(--tool-accent-green);
}

.tool-textarea {
  resize: vertical;
  min-height: 80px;
  font-family: var(--tool-mono);
  font-size: .85rem;
  width: 100%;
}

.tool-input[type="range"] {
  padding: 0;
  cursor: pointer;
  accent-color: var(--tool-accent-green);
}

/* Buttons */
.tool-btn {
  background: var(--tool-bg-tertiary);
  border: 1px solid var(--tool-accent-green);
  border-radius: var(--tool-radius);
  color: var(--tool-accent-green);
  cursor: pointer;
  font-size: .9rem;
  font-family: var(--tool-font);
  padding: 8px 16px;
  transition: background .2s, color .2s;
  white-space: nowrap;
}

.tool-btn:hover {
  background: var(--tool-accent-green);
  color: #000;
}

.tool-btn.danger {
  border-color: var(--tool-accent-red);
  color: var(--tool-accent-red);
}

.tool-btn.danger:hover {
  background: var(--tool-accent-red);
  color: #fff;
}

.tool-btn.primary {
  background: var(--tool-accent-green);
  color: #000;
  font-weight: 600;
}

.tool-btn.primary:hover {
  filter: brightness(1.1);
}

/* Code / output displays */
.tool-code {
  background: #0d1117;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  font-family: var(--tool-mono);
  font-size: .82rem;
  padding: 12px;
  word-break: break-all;
  line-height: 1.6;
  overflow-x: auto;
}

.tool-code .label {
  color: var(--tool-text-secondary);
  font-size: .75rem;
  display: block;
  margin-block-end: 4px;
}

.tool-code .value {
  color: var(--tool-accent-green);
}

.tool-code .value.invalid {
  color: var(--tool-accent-red);
}

/* Block card */
.block-card {
  background: var(--tool-bg-tertiary);
  border: 2px solid var(--tool-border);
  border-radius: var(--tool-radius);
  padding: 12px;
  margin-block-end: 8px;
  transition: border-color .3s;
  position: relative;
}

.block-card.valid { border-color: var(--tool-accent-green); }
.block-card.invalid { border-color: var(--tool-accent-red); }

.block-card .block-index {
  font-size: .75rem;
  color: var(--tool-text-secondary);
  margin-block-end: 4px;
}

.block-card .block-hash {
  font-family: var(--tool-mono);
  font-size: .75rem;
  word-break: break-all;
  color: var(--tool-accent-green);
}

.block-card.invalid .block-hash { color: var(--tool-accent-red); }

.block-arrow {
  text-align: center;
  color: var(--tool-text-secondary);
  font-size: 1.2rem;
  margin-block: -2px;
}

/* Mining animation */
@keyframes mining-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

.mining-active { animation: mining-pulse .4s ease-in-out infinite; }

/* Labels */
.tool-label {
  font-size: .85rem;
  color: var(--tool-text-secondary);
  white-space: nowrap;
}

/* Badge/pill */
.tool-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  background: var(--tool-bg-tertiary);
  border: 1px solid var(--tool-accent-green);
  color: var(--tool-accent-green);
}

html[dir="rtl"] .tool-header {
  direction: rtl;
}

html[dir="rtl"] :where(.tool-label, .tool-section h2, .tool-btn) {
  text-align: start;
}

:where(.tool-btn, .tool-label, .tool-section h2, .tool-code) {
  overflow-wrap: anywhere;
}

.tool-badge.red { border-color: var(--tool-accent-red); color: var(--tool-accent-red); }
.tool-badge.blue { border-color: var(--tool-accent-blue); color: var(--tool-accent-blue); }
.tool-badge.yellow { border-color: var(--tool-accent-yellow); color: var(--tool-accent-yellow); }

/* Progress bar */
.tool-progress-bar {
  height: 8px;
  background: var(--tool-bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.tool-progress-bar .fill {
  height: 100%;
  background: var(--tool-accent-green);
  border-radius: 4px;
  transition: width .1s linear;
}

/* Stat grid */
.tool-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
}

.tool-stat {
  background: var(--tool-bg-tertiary);
  border-radius: var(--tool-radius);
  padding: 10px 12px;
  text-align: center;
}

.tool-stat .stat-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--tool-accent-green);
  font-family: var(--tool-mono);
}

.tool-stat .stat-label {
  font-size: .7rem;
  color: var(--tool-text-secondary);
  margin-block-start: 2px;
}

/* Responsive */
@media (max-width: 500px) {
  body.tool-body { padding: 10px; }
  .tool-row { flex-direction: column; align-items: stretch; }
  .tool-btn { width: 100%; }
}