/* ==========================================================================
   Config Forge — Tool-specific styles (Single-page sidebar layout)
   ========================================================================== */

/* Page layout */
.cf-app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   Top Bar
   ========================================================================== */

.cf-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  gap: var(--space-4);
}

.cf-topbar__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: color var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.cf-topbar__back:hover {
  color: var(--text-primary);
}

.cf-topbar__title {
  font-family: var(--font-accent);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  flex-shrink: 0;
}

.cf-topbar__title span {
  background: linear-gradient(135deg, var(--accent-warm), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cf-topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

/* ==========================================================================
   Main Layout
   ========================================================================== */

.cf-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  flex: 1;
  min-height: calc(100vh - 53px);
}

/* ==========================================================================
   Left Sidebar
   ========================================================================== */

.cf-sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cf-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cf-section__title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Tool Selection Row
   ========================================================================== */

.cf-tools {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.cf-tool {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-2);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  color: var(--text-secondary);
}

.cf-tool:hover {
  border-color: var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.cf-tool--selected {
  border-color: var(--accent-warm);
  background: rgba(251, 146, 60, 0.08);
  color: var(--accent-warm);
  box-shadow: 0 0 16px var(--glow-warm);
}

.cf-tool svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.cf-tool span {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-align: center;
  line-height: 1.2;
}

/* ==========================================================================
   Accordion (Rule Categories)
   ========================================================================== */

.cf-accordion {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--duration-normal) var(--ease-out);
}

.cf-accordion--open {
  border-color: var(--border-default);
}

.cf-accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-3);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  transition: background var(--duration-fast) var(--ease-out);
}

.cf-accordion__header:hover {
  background: var(--bg-elevated);
}

.cf-accordion__name {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
}

.cf-accordion__count {
  font-size: var(--text-xs);
  font-family: var(--font-code);
  color: var(--text-muted);
  flex-shrink: 0;
}

.cf-accordion__chevron {
  color: var(--text-muted);
  transition: transform var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
}

.cf-accordion--open .cf-accordion__chevron {
  transform: rotate(180deg);
}

.cf-accordion__body {
  display: none;
  padding: var(--space-1) var(--space-3) var(--space-3);
  border-top: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Rule Item (Checkbox)
   ========================================================================== */

.cf-rule-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  user-select: none;
}

.cf-rule-item:hover {
  color: var(--text-primary);
}

.cf-rule-item input[type="checkbox"] {
  display: none;
}

.cf-rule-item__check {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  flex-shrink: 0;
  position: relative;
  transition: all var(--duration-fast) var(--ease-out);
}

.cf-rule-item input[type="checkbox"]:checked + .cf-rule-item__check {
  background: var(--accent-warm);
  border-color: var(--accent-warm);
}

.cf-rule-item input[type="checkbox"]:checked + .cf-rule-item__check::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 4px;
  width: 5px;
  height: 9px;
  border: solid var(--text-inverse);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

/* ==========================================================================
   Customization Section
   ========================================================================== */

.cf-custom {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cf-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.cf-field__label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-muted);
}

.cf-select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6L8 10L12 6' stroke='%2352525b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
}

.cf-select:hover {
  border-color: var(--border-default);
}

.cf-select:focus {
  outline: none;
  border-color: var(--accent-warm);
  box-shadow: 0 0 0 3px var(--glow-warm);
}

.cf-textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  resize: vertical;
  min-height: 80px;
  transition: all var(--duration-fast) var(--ease-out);
}

.cf-textarea::placeholder {
  color: var(--text-muted);
}

.cf-textarea:hover {
  border-color: var(--border-default);
}

.cf-textarea:focus {
  outline: none;
  border-color: var(--accent-warm);
  box-shadow: 0 0 0 3px var(--glow-warm);
}

/* ==========================================================================
   Right Preview Panel
   ========================================================================== */

.cf-preview {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-primary);
}

.cf-preview__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.cf-preview__filename {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-code);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.cf-preview__filename svg {
  color: var(--text-muted);
}

.cf-preview__badge {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--accent-warm);
  background: rgba(251, 146, 60, 0.1);
  border: 1px solid rgba(251, 146, 60, 0.2);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.cf-code-block {
  flex: 1;
  overflow: auto;
  padding: var(--space-6);
}

.cf-code-block pre {
  margin: 0;
  padding: 0;
  background: none;
  border: none;
}

.cf-code-block code {
  font-family: var(--font-code);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  background: none;
  border: none;
  padding: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Syntax Highlighting */
.cf-code-block .hl-heading {
  color: var(--accent-warm);
  font-weight: 600;
}
.cf-code-block .hl-bold {
  color: #fafafa;
  font-weight: 700;
}
.cf-code-block .hl-keyword {
  color: #c084fc;
}
.cf-code-block .hl-string {
  color: #34d399;
}
.cf-code-block .hl-comment {
  color: #52525b;
  font-style: italic;
}
.cf-code-block .hl-list {
  color: #fb923c;
}
.cf-code-block .hl-key {
  color: #22d3ee;
}

/* ==========================================================================
   Toast
   ========================================================================== */

.cf-toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--space-3) var(--space-5);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.cf-toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .cf-layout {
    grid-template-columns: 1fr;
  }

  .cf-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    max-height: 50vh;
  }

  .cf-tools {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (max-width: 640px) {
  .cf-topbar {
    padding: var(--space-3) var(--space-4);
  }

  .cf-topbar__title {
    font-size: var(--text-base);
  }

  .cf-topbar__back span,
  .cf-topbar__back svg {
    display: none;
  }

  .cf-topbar__actions .btn__label {
    display: none;
  }

  .cf-sidebar {
    padding: var(--space-3);
  }

  .cf-tools {
    grid-template-columns: repeat(3, 1fr);
  }

  .cf-code-block {
    padding: var(--space-4);
  }
}