/**
 * Newsbrio UI Components Stylesheet
 * 
 * Buttons, Cards, Upload Zone, Accordion, Alerts, Breadcrumbs, Forms & Ad Placements
 */

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.35rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
  min-width: 44px;
  transition: all var(--transition-fast);
  user-select: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #ffffff;
  box-shadow: 0 4px 8px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-dark);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

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

.btn-outline:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-hover);
}

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

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

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  min-height: 36px;
}

.btn-lg {
  padding: 0.9rem 1.85rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
  min-height: 50px;
}

.btn-block {
  width: 100%;
}

.btn[disabled], .btn.is-disabled {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  transition: all var(--transition-normal);
  position: relative;
}

.card-hover:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.card-flush {
  padding: 0;
  overflow: hidden;
}

/* ==========================================================================
   Badges & Pills
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1;
}

.badge-blue {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.badge-teal {
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
}

.badge-muted {
  background-color: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.badge-warning {
  background-color: var(--color-warning-light);
  color: #b45309;
}

/* ==========================================================================
   Upload Zone Component (Hero & Tool Pages)
   ========================================================================== */
.upload-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
  max-width: 820px;
  margin: 0 auto;
}

.upload-dropzone {
  border: 2px dashed #93c5fd;
  background-color: #f8faff;
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-6);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.upload-dropzone:hover, .upload-dropzone:focus-visible {
  border-color: var(--color-primary);
  background-color: #eff6ff;
}

.upload-dropzone.drag-over {
  border-color: var(--color-primary);
  background-color: #dbeafe;
  transform: scale(1.01);
}

.upload-icon-circle {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4) auto;
  border-radius: 50%;
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.upload-prompt-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: var(--space-2);
}

.upload-prompt-subtitle {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-6);
}

.upload-formats-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.format-pill {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

/* File Selected Preview State */
.file-preview-card {
  display: none;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-6);
  text-align: left;
}

.file-preview-card.has-file {
  display: block;
}

.preview-grid {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: var(--space-6);
  align-items: center;
}

.preview-thumb-box {
  width: 140px;
  height: 100px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-meta-details h4 {
  font-size: 1.1rem;
  margin-bottom: var(--space-1);
  word-break: break-all;
}

.preview-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.preview-meta-row span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.preview-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Phase 1 Notice Banner */
.phase-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background-color: var(--color-info-light);
  border: 1px solid #bae6fd;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-6);
  color: #0369a1;
  font-size: 0.92rem;
  line-height: 1.5;
}

.phase-notice svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.phase-notice strong {
  color: #0c4a6e;
}

/* ==========================================================================
   Accordion (Accessible FAQs)
   ========================================================================== */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 860px;
  margin: 0 auto;
}

.accordion-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.accordion-item.is-open {
  border-color: #93c5fd;
  box-shadow: var(--shadow-sm);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  cursor: pointer;
  min-height: 52px;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.accordion-trigger:hover {
  color: var(--color-primary);
  background-color: #f8fafc;
}

.accordion-icon {
  width: 22px;
  height: 22px;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.accordion-item.is-open .accordion-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.accordion-panel {
  display: none;
  padding: 0 var(--space-6) var(--space-6) var(--space-6);
  color: #334155;
  font-size: 1rem;
  line-height: 1.7;
}

.accordion-item.is-open .accordion-panel {
  display: block;
}

/* ==========================================================================
   Alerts
   ========================================================================== */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  font-size: 0.95rem;
  line-height: 1.5;
}

.alert-success {
  background-color: var(--color-success-light);
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert-error {
  background-color: var(--color-error-light);
  border: 1px solid #fecaca;
  color: #991b1b;
}

.alert-warning {
  background-color: var(--color-warning-light);
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-info {
  background-color: var(--color-info-light);
  border: 1px solid #bae6fd;
  color: #075985;
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */
.breadcrumbs {
  margin-bottom: var(--space-6);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.breadcrumb-item a {
  color: var(--color-text-muted);
}

.breadcrumb-item a:hover {
  color: var(--color-primary);
}

.breadcrumb-item.is-active {
  color: var(--color-text-dark);
  font-weight: 500;
}

.breadcrumb-separator {
  color: var(--color-text-subtle);
  font-size: 0.8rem;
}

/* ==========================================================================
   AdSense-Ready Containers (CLS-Free Placeholders for Dev)
   ========================================================================== */
.ad-slot-container {
  width: 100%;
  margin: var(--space-10) auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ad-slot-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-1);
}

.ad-slot-box {
  background-color: #f1f5f9;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  max-width: 100%;
  box-sizing: border-box;
}

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

.ad-rectangle {
  min-height: 250px;
  width: 300px;
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: var(--space-2);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.98rem;
  color: var(--color-text-dark);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.form-textarea {
  min-height: 130px;
  resize: vertical;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-help {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* Honeypot hidden input */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  top: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  visibility: hidden !important;
}

/* Responsive Component Adjustments */
@media (max-width: 640px) {
  .preview-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .preview-thumb-box {
    margin: 0 auto;
  }
  .preview-meta-row {
    justify-content: center;
  }
  .preview-actions {
    width: 100%;
  }
  .upload-dropzone {
    padding: var(--space-6) var(--space-3);
  }
}