/* ==========================================================================
   ZeroTools — UI Components
   File: css/components.css
   ========================================================================== */

/* --- 1. BUTTONS --- */
.btn-primary {
  background: var(--accent);
  color: #000;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: 8px 16px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.btn-secondary:hover {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-secondary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  border: none;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.btn-ghost:focus-visible {
  outline: none;
  background: var(--bg-elevated);
}

.btn-ghost.copied {
  color: var(--color-success);
}

/* --- 2. INPUTS & TEXTAREAS --- */
.input, .textarea {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: 10px 14px;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.textarea {
  min-height: 180px;
  line-height: var(--line-height-normal);
  resize: vertical;
}

.input:focus, .textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.input::placeholder, .textarea::placeholder {
  color: var(--text-tertiary);
}

/* Checkboxes & Radios Customization (Terminal Minimal approach) */
input[type="checkbox"], input[type="radio"] {
  accent-color: var(--accent);
  cursor: pointer;
}

/* --- 3. PANELS & CONTAINERS --- */
.output-panel {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: var(--space-4);
  overflow-x: auto;
  position: relative;
  min-height: 120px;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: var(--line-height-normal);
  color: var(--text-primary);
}

/* --- 4. CARDS (Homepage Grid) --- */
.tool-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.tool-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-elevated);
  transform: translateY(-1px);
}

.tool-card .tool-icon {
  font-size: 22px;
  margin-bottom: var(--space-1);
}

.tool-card .tool-name {
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  font-family: var(--font-sans);
}

.tool-card .tool-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  font-family: var(--font-sans);
}

.tool-card .tool-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  background: var(--accent-dim);
  padding: 2px 8px;
  border-radius: 3px;
  width: fit-content;
  margin-top: auto;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- 5. BADGES & LABELS --- */
.badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid;
  width: fit-content;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
}

/* Semantic Badge Variants */
.badge-format   { color: #0ea5e9; border-color: #0ea5e930; background: #0ea5e910; }
.badge-encode   { color: #a78bfa; border-color: #a78bfa30; background: #a78bfa10; }
.badge-generate { color: #00dc82; border-color: #00dc8230; background: #00dc8210; }
.badge-convert  { color: #ffd60a; border-color: #ffd60a30; background: #ffd60a10; }
.badge-security { color: #ff6b9d; border-color: #ff6b9d30; background: #ff6b9d10; }
.badge-text     { color: #f97316; border-color: #f9731630; background: #f9731610; }
.badge-web      { color: #06b6d4; border-color: #06b6d430; background: #06b6d410; }

.privacy-badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* --- 6. UTILITIES & MICRO-ELEMENTS --- */
kbd {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  padding: 2px 6px;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  box-shadow: 0 1px 0 var(--border-default);
}

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastSlideIn {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Loading Spinner */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}