/* ============================================
   Tool Shared — Common UI patterns for tool pages
   (decode, format, datetime, etc.)
   Variables defined in variables.css.
   ============================================ */

/* --- Page container --- */
.tool-page {
  max-width: var(--tool-max-width, 640px);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-2xl);
  color: var(--color-text-primary);
  line-height: 1.7;
}

/* --- Hero --- */
.tool-hero {
  text-align: center;
  margin-bottom: var(--space-md);
}
.tool-hero h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0 0 0.3rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.tool-hero p {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  margin: 0 auto;
  max-width: 480px;
}

/* --- Badge --- */
.tool-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-xs);
}
.tool-badge--success {
  color: var(--color-success-text);
  background: var(--color-success-bg);
}

/* --- Textarea --- */
.tool-textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font-size: var(--text-md);
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-bg-base);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-btn);
  transition: border-color 0.15s, box-shadow 0.15s;
  box-sizing: border-box;
  min-height: 90px;
  resize: vertical;
  line-height: 1.7;
}
.tool-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}
.tool-textarea::placeholder {
  color: var(--color-text-muted);
}
.tool-textarea--mono {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* --- Spinner --- */
.tool-spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: toolSpin 0.6s linear infinite;
  vertical-align: middle;
}
@keyframes toolSpin { to { transform: rotate(360deg); } }

/* --- Loading row --- */
.tool-loading-row {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

/* --- Result --- */
.tool-result {
  white-space: pre-wrap;
  word-break: break-all;
  padding: var(--space-sm);
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  border-radius: var(--radius-btn);
  margin-top: var(--space-sm);
  font-size: var(--text-md);
  line-height: 1.7;
}
.tool-result-text {
  flex: 1;
  min-width: 0;
}
.tool-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xs);
}
.tool-result-label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-success-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* --- Copy button (icon style) --- */
.tool-copy-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1rem;
  padding: 0.15rem;
  line-height: 1;
  transition: color 0.15s;
}
.tool-copy-btn:hover { color: var(--color-accent); }

/* --- Copy button (text style) --- */
.tool-copy-btn--text {
  font-size: var(--text-sm);
  padding: 0.3rem 0.7rem;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}
.tool-copy-btn--text:hover { background: var(--color-bg-base); }

/* --- Checklist --- */
.tool-checklist {
  margin-top: var(--space-sm);
  padding: var(--space-sm);
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
}
.tool-checklist-title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}
.tool-checklist-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-base);
  padding: 0.25rem 0;
  line-height: 1.4;
}
.tool-checklist-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.7rem;
}
.tool-checklist-icon--applied {
  background: var(--color-success-bg);
  color: var(--color-success-text);
}
.tool-checklist-icon--skipped {
  background: var(--color-bg-base);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.tool-checklist-text--skipped {
  color: var(--color-text-muted);
}

/* --- Pill selection --- */
.tool-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tool-pills-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.2rem;
}
.tool-pill {
  padding: 0.3rem 0.7rem;
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: inherit;
  color: var(--color-text-secondary);
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.tool-pill:hover {
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.tool-pill--active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.tool-pill--active:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

/* --- Char counter --- */
.tool-char-counter {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: right;
  margin-top: 0.25rem;
}
.tool-char-counter--over {
  color: var(--color-error-text);
}

/* --- Primary action button --- */
.tool-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 3rem;
  font-size: var(--text-lg);
  font-weight: 700;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-btn);
  background: var(--color-accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
}
.tool-btn-primary:hover { background: var(--color-accent-hover); box-shadow: var(--shadow-sm); }
.tool-btn-primary:active { transform: scale(0.98); }
.tool-btn-primary:disabled { opacity: 0.55; pointer-events: none; }

/* --- Ghost / secondary button --- */
.tool-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.85rem 2rem;
  font-size: var(--text-lg);
  font-weight: 700;
  font-family: inherit;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-btn);
  background: var(--color-card-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.tool-btn-ghost:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text-primary);
}

/* --- Utilities --- */
.tool-hidden { display: none !important; }

.tool-fade-in {
  animation: toolFadeIn 0.35s ease;
}
@keyframes toolFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tool-privacy {
  text-align: center;
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Description (SEO body text below the tool) --- */
.tool-description {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.85;
}

/* --- Searchable Select Dropdown --- */
.tool-searchable-select {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 0.6rem 1rem;
  cursor: pointer;
  position: relative;
}
.tool-searchable-select__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}
.tool-searchable-select__value {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-accent);
}
.tool-searchable-select__value--dark {
  color: var(--color-text-primary);
}
.tool-searchable-select__chevron {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.tool-searchable-select__dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 300px;
  max-height: 340px;
  overflow-y: auto;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-md);
  z-index: 100;
  padding: 0;
}
.tool-searchable-select__dropdown.open {
  display: block;
}
.tool-searchable-select__search {
  position: sticky;
  top: 0;
  width: 100%;
  padding: 0.55rem 0.85rem;
  font-size: var(--text-sm);
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-card-bg);
  border: none;
  border-bottom: 1px solid var(--color-border);
  outline: none;
  box-sizing: border-box;
}
.tool-searchable-select__search::placeholder {
  color: var(--color-text-muted);
}
.tool-searchable-select__list {
  padding: 0.25rem 0;
}
.tool-searchable-select__item {
  padding: 0.45rem 0.85rem;
  font-size: var(--text-base);
  cursor: pointer;
  transition: background 0.1s;
}
.tool-searchable-select__item:hover {
  background: var(--color-surface-secondary);
}
.tool-searchable-select__item.active {
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
}
.tool-searchable-select__item.hidden {
  display: none;
}
.tool-searchable-select__divider {
  height: 1px;
  background: var(--color-border);
  margin: 0.35rem 0;
}
.tool-searchable-select__group-label {
  padding: 0.3rem 0.85rem 0.15rem;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}
.tool-searchable-select__empty {
  padding: 0.8rem 0.85rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}