/* ==========================================================================
   ToolKit Components CSS — Buttons, Inputs, Cards, Dropzones, Alerts, Shell & States
   ========================================================================== */

/* ==========================================================================
   1. Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.25;
  white-space: nowrap;
  user-select: none;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 1px 2px 0 rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.btn-success {
  background-color: var(--color-success);
  color: #ffffff;
}

.btn-success:hover {
  background-color: var(--color-success-hover);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text-main);
}

.btn-outline:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-main);
}

/* Button Sizes */
.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
}

.btn-icon {
  padding: 0.625rem;
  border-radius: var(--radius-md);
}

/* Loading button spinner */
.btn.is-loading {
  color: transparent !important;
  pointer-events: none;
  position: relative;
}

.btn.is-loading::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid #ffffff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

.btn-secondary.is-loading::after, .btn-outline.is-loading::after {
  border-color: var(--color-text-main);
  border-top-color: transparent;
}

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

/* ==========================================================================
   2. Form Inputs & Search
   ========================================================================== */
.input, .textarea, .select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-sm);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-main);
  transition: all var(--transition-fast);
}

.input:focus, .textarea:focus, .select:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  outline: none;
}

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

.textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.5;
}

.textarea-code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  tab-size: 2;
  white-space: pre;
}

.search-box {
  max-width: 620px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 1.1rem 5.5rem 1.1rem 3.25rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  outline: none;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12), var(--shadow-md);
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  pointer-events: none;
  display: flex;
}

.search-icon svg {
  width: 20px;
  height: 20px;
}

.search-shortcut-badge {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-text-subtle);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 3px 7px;
  pointer-events: none;
}

/* Filter Pills */
.filter-pills {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.filter-pill {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover, .filter-pill.active {
  background: var(--color-primary-bg);
  border-color: var(--color-primary-border);
  color: var(--color-primary);
}

/* ==========================================================================
   3. Cards
   ========================================================================== */
.tool-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.tool-card:hover .tool-card-icon {
  transform: scale(1.05);
}

.tool-card-icon svg {
  width: 24px;
  height: 24px;
}

.tool-card-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.tool-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: var(--space-2);
}

.tool-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-5);
  flex-grow: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  font-weight: 700;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-surface-alt);
}

/* Category Card */
.category-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}

.category-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.category-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-card-icon svg {
  width: 24px;
  height: 24px;
}

/* Feature Value Card */
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-xs);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
}

/* ==========================================================================
   4. Tool Shell & Workspace
   ========================================================================== */
.tool-shell {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-8);
  overflow: hidden;
}

.tool-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background-color: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.tool-toolbar-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--font-size-base);
}

.tool-toolbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tool-workspace {
  padding: var(--space-8);
}

@media (max-width: 640px) {
  .tool-workspace {
    padding: var(--space-5);
  }
}

/* ==========================================================================
   5. Dropzones
   ========================================================================== */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-12) var(--space-6);
  text-align: center;
  background-color: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.dropzone:hover, .dropzone.is-dragover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

.dropzone-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.dropzone-icon svg {
  width: 28px;
  height: 28px;
}

.dropzone-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: var(--space-1);
}

.dropzone-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   6. Alerts & Notifications
   ========================================================================== */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  border: 1px solid transparent;
  line-height: 1.5;
}

.alert-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.alert-icon svg {
  width: 18px;
  height: 18px;
}

.alert-error {
  background-color: var(--color-error-bg);
  border-color: var(--color-error-border);
  color: var(--color-error);
}

.alert-success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success-border);
  color: var(--color-success);
}

.alert-warning {
  background-color: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--color-warning);
}

.alert-info {
  background-color: var(--color-info-bg);
  border-color: var(--color-info-border);
  color: var(--color-info);
}

/* ==========================================================================
   7. Loading Indicators & Skeletons
   ========================================================================== */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spinner-spin 0.7s linear infinite;
  display: inline-block;
}

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

.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-2);
}

/* ==========================================================================
   8. AdSlot Container (Zero CLS Guarantee)
   ========================================================================== */
.ad-slot-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: #f1f5f9;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-md);
  margin: var(--space-6) auto;
  text-align: center;
  overflow: hidden;
}

.ad-slot-label {
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.ad-slot-topbanner {
  min-height: 90px;
  max-width: 728px;
  width: 100%;
}

.ad-slot-midcontent {
  min-height: 250px;
  max-width: 728px;
  width: 100%;
}

.ad-slot-sidebar {
  min-height: 250px;
  max-width: 300px;
  width: 100%;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .ad-slot-topbanner {
    min-height: 50px;
    max-width: 320px;
  }
  .ad-slot-midcontent {
    min-height: 250px;
    max-width: 300px;
  }
  .ad-slot-sidebar {
    min-height: 250px;
    max-width: 300px;
  }
}

/* ==========================================================================
   9. Cookie Consent Banner (GDPR / UK PECA / CCPA)
   ========================================================================== */

.consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 24px 0 rgba(15, 23, 42, 0.10);
  padding: var(--space-4) var(--space-6);
  /* Default: off-screen below viewport; consent.js slides it up */
  transform: translateY(120%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.consent-banner-inner {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.consent-banner-content {
  flex: 1 1 400px;
  min-width: 0;
}

.consent-banner-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-main);
  margin: 0 0 var(--space-1) 0;
}

.consent-banner-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

.consent-banner-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.consent-banner-link:hover {
  color: var(--color-primary-hover);
}

.consent-banner-actions {
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .consent-banner {
    padding: var(--space-4);
  }
  .consent-banner-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
  .consent-banner-actions {
    width: 100%;
  }
  .consent-banner-actions .btn {
    flex: 1;
    justify-content: center;
  }
}