/* ========== TOOL SHELL ========== */
.tool-description {
  font-size: 0.9375rem;
  color: var(--text-2);
  margin: 0.5rem 0 1.5rem;
  line-height: 1.6;
}

/* ========== TOOL CONTAINER ========== */
.tool-container {
  min-height: 300px;
  margin-bottom: 2.5rem;
}

/* ========== TEXTAREAS / INPUTS ========== */
.tool-textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

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

.tool-textarea.error-state {
  border-color: var(--error-border);
  background: var(--error-bg);
}

/* ========== OUTPUT PANELS ========== */
.tool-output {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-soft);
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 80px;
}

.tool-output.error-state {
  border-color: var(--error-border);
  background: var(--error-bg);
  color: #c53030;
}

/* ========== BUTTONS ========== */
.tool-button {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 8px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.tool-button:hover {
  background: var(--accent-hover);
}

.tool-button:active {
  transform: scale(0.98);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 5px 10px;
  background: var(--bg);
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.copy-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
  border-color: var(--text-3);
}

.copy-btn.copied {
  background: var(--success-bg);
  color: #276749;
  border-color: var(--success-border);
}

/* ========== TABS ========== */
.tool-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
}

.tool-tab {
  padding: 8px 16px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  margin-bottom: -1px;
}

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

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

/* ========== ROWS ========== */
.tool-row {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.tool-row > * {
  flex: 1;
  min-width: 0;
}

/* ========== LABELS ========== */
.tool-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.375rem;
}

/* ========== PANEL (label + output + copy button) ========== */
.tool-panel {
  margin-bottom: 1rem;
}

.tool-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.375rem;
}

/* ========== SELECT / INPUT ========== */
.tool-select,
.tool-input {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color 0.15s;
}

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

/* ========== HOW TO ========== */
.how-to {
  margin-bottom: 2.5rem;
}

.how-to h2 {
  margin-bottom: 0.75rem;
}

.how-to ol {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

/* ========== FAQ ========== */
.faq {
  margin-bottom: 2.5rem;
}

.faq h2 {
  margin-bottom: 1rem;
}

.faq-item {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
}

.faq-item:last-child {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.375rem;
  font-size: 0.9375rem;
}

.faq-answer {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.65;
}

/* ========== RELATED TOOLS ========== */
.related-tools {
  margin-bottom: 2rem;
}

.related-tools h2 {
  margin-bottom: 0.75rem;
}

.related-tools-list {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
}

.related-tools-list a {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.related-tools-list a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-soft);
  text-decoration: none;
}

/* ========== ERROR STATE ========== */
.error-state {
  border-color: var(--error-border) !important;
  background: var(--error-bg) !important;
}

/* ========== STATS BAR ========== */
.tool-stats {
  display: flex;
  gap: 1.5rem;
  padding: 10px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.tool-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tool-stat-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-mono);
}

.tool-stat-label {
  font-size: 11px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ========== UUID LIST ========== */
.uuid-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  max-height: 400px;
  overflow-y: auto;
}

.uuid-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 6px 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.uuid-value {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
}

/* ========== DIFF VIEWER ========== */
.diff-line {
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-line.added {
  background: #f0fff4;
  color: #276749;
}

.diff-line.removed {
  background: #fff5f5;
  color: #c53030;
}

.diff-line.unchanged {
  color: var(--text-3);
}

/* ========== HASH ROWS ========== */
.hash-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--border);
}

.hash-row:first-child {
  border-top: 1px solid var(--border);
}

.hash-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: 56px;
  flex-shrink: 0;
}

.hash-value {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  word-break: break-all;
}

/* ========== IMAGE PREVIEW ========== */
.image-preview {
  max-width: 200px;
  max-height: 200px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 0.75rem;
  display: block;
}

/* ========== LIVE CLOCK ========== */
.live-timestamp {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text);
  padding: 1rem 0;
  letter-spacing: -0.02em;
}