/**
 * HEAVY MACHINERY - Global Industrial Marketplace
 * Dedicated Request for Quotation (RFQ) Stylesheet
 * 
 * Provides unified, premium light industrial styling for:
 * 1. Machine-Specific RFQ View (rfq.html)
 * 2. Custom Machining Contract RFQ View (custom-rfq.html)
 * 
 * Enforces strict WCAG 2.1 AA accessibility, responsive flex/grid layouts,
 * high-contrast visual cues, and state feedback alerts.
 */

/* =============================================================================
   1. PAGE WRAPPER & CONTAINER
   ============================================================================= */

.rfq-page-wrapper {
  background-color: var(--color-bg-body, #F8F9F6);
  min-height: 80vh;
  padding: 2.5rem 0 5rem 0;
}

.rfq-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* =============================================================================
   2. HEADER & BREADCRUMBS
   ============================================================================= */

.rfq-header-section {
  margin-bottom: 2rem;
}

.rfq-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted, #64748B);
  margin-bottom: 1rem;
}

.rfq-breadcrumb a {
  color: var(--color-text-muted, #64748B);
  text-decoration: none;
  transition: color 0.15s ease;
}

.rfq-breadcrumb a:hover {
  color: var(--color-primary-700, #104E46);
  text-decoration: underline;
}

.rfq-breadcrumb .sep {
  color: var(--color-border-strong, #A8B3A2);
  user-select: none;
}

.rfq-breadcrumb .current {
  color: var(--color-text-heading, #0D141C);
  font-weight: 600;
}

.rfq-page-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.rfq-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-600, #16655A);
}

.rfq-page-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text-heading, #0D141C);
  line-height: 1.2;
}

.rfq-page-subtitle {
  font-size: 1rem;
  color: var(--color-text-body, #334155);
  max-width: 780px;
  line-height: 1.5;
}

/* =============================================================================
   3. 2-COLUMN RFQ LAYOUT GRID
   ============================================================================= */

.rfq-grid-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 2rem;
  align-items: start;
}

/* =============================================================================
   4. LEFT COLUMN: MACHINE SUMMARY / CAPABILITY OVERVIEW
   ============================================================================= */

.rfq-sidebar-card {
  background: var(--color-bg-surface, #FFFFFF);
  border: 1px solid var(--color-border-subtle, #E5E9E2);
  border-radius: var(--radius-card, 12px);
  padding: 1.75rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  position: sticky;
  top: 90px;
}

.rfq-machine-img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  overflow: hidden;
  background-color: #E2E8F0;
  margin-bottom: 1.25rem;
  border: 1px solid var(--color-border-subtle, #E5E9E2);
}

.rfq-machine-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.rfq-machine-badge-category {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(13, 20, 28, 0.85);
  backdrop-filter: blur(4px);
  color: #FFFFFF;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.rfq-machine-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-heading, #0D141C);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.rfq-seller-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted, #64748B);
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border-subtle, #E5E9E2);
}

.rfq-seller-identity {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  color: var(--color-text-main, #121922);
}

.rfq-seller-verified-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background-color: var(--color-verified-bg, #EDFBF6);
  color: var(--color-verified, #059669);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 700;
}

.rfq-spec-table {
  width: 100%;
  margin-bottom: 1.5rem;
  border-collapse: collapse;
}

.rfq-spec-table th,
.rfq-spec-table td {
  padding: 0.45rem 0;
  font-size: 0.8125rem;
  border-bottom: 1px dashed var(--color-border-subtle, #E5E9E2);
}

.rfq-spec-table th {
  text-align: left;
  color: var(--color-text-muted, #64748B);
  font-weight: 500;
  width: 45%;
}

.rfq-spec-table td {
  text-align: right;
  color: var(--color-text-heading, #0D141C);
  font-weight: 600;
}

.rfq-sidebar-price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-primary-50, #EEF7F5);
  border: 1px solid var(--color-primary-100, #D6EFEA);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
}

.rfq-price-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary-800, #0C3E38);
  font-weight: 600;
}

.rfq-price-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary-700, #104E46);
}

.rfq-view-details-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 0.65rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary-700, #104E46);
  background-color: #F8FAFC;
  border: 1px solid var(--color-border-medium, #D1D8CD);
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.rfq-view-details-link:hover {
  background-color: var(--color-primary-50, #EEF7F5);
  border-color: var(--color-primary-300, #57B5A8);
}

/* =============================================================================
   5. RIGHT COLUMN: FORM CARD
   ============================================================================= */

.rfq-form-card {
  background: var(--color-bg-surface, #FFFFFF);
  border: 1px solid var(--color-border-subtle, #E5E9E2);
  border-radius: var(--radius-card, 12px);
  padding: 2.25rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.rfq-form-header {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border-subtle, #E5E9E2);
}

.rfq-form-header h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text-heading, #0D141C);
  margin-bottom: 0.35rem;
}

.rfq-form-header p {
  font-size: 0.875rem;
  color: var(--color-text-muted, #64748B);
}

.rfq-section-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-heading, #0D141C);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1.75rem 0 1rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rfq-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border-subtle, #E5E9E2);
}

.rfq-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.rfq-form-row.triple {
  grid-template-columns: 1fr 1fr 1fr;
}

.rfq-form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.25rem;
}

.rfq-form-group.full-width {
  grid-column: 1 / -1;
}

.rfq-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-heading, #0D141C);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rfq-label .req {
  color: #DC2626;
  margin-left: 2px;
}

.rfq-label .counter {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted, #64748B);
}

.rfq-input,
.rfq-select,
.rfq-textarea {
  width: 100%;
  padding: 0.75rem 0.95rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-text-heading, #0D141C);
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-medium, #D1D8CD);
  border-radius: 6px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  box-sizing: border-box;
}

.rfq-input:focus,
.rfq-select:focus,
.rfq-textarea:focus {
  outline: none;
  border-color: var(--color-primary-600, #16655A);
  box-shadow: 0 0 0 3px rgba(16, 78, 70, 0.15);
}

.rfq-input:disabled,
.rfq-select:disabled,
.rfq-textarea:disabled {
  background-color: var(--color-bg-subtle, #F2F4EF);
  cursor: not-allowed;
  opacity: 0.75;
}

.rfq-input-group {
  display: flex;
  gap: 0.5rem;
}

.rfq-input-group .rfq-input {
  flex: 1;
}

.rfq-input-group .rfq-select {
  width: 110px;
  flex-shrink: 0;
}

.rfq-help-text {
  font-size: 0.75rem;
  color: var(--color-text-muted, #64748B);
  margin-top: 0.35rem;
  line-height: 1.4;
}

/* =============================================================================
   6. ALERTS & STATE FEEDBACK
   ============================================================================= */

.rfq-alert {
  padding: 1rem 1.25rem;
  border-radius: 8px;
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  display: none;
}

.rfq-alert.show {
  display: block;
}

.rfq-alert-error {
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

.rfq-alert-warning {
  background-color: #FFFBEB;
  border: 1px solid #FDE68A;
  color: #92400E;
}

.rfq-alert-info {
  background-color: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E40AF;
}

.rfq-success-container {
  display: none;
  text-align: center;
  padding: 3rem 1.5rem;
}

.rfq-success-container.show {
  display: block;
}

.rfq-success-icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-verified-bg, #EDFBF6);
  color: var(--color-verified, #059669);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  border: 2px solid var(--color-success-border, #A7F3D0);
}

.rfq-success-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text-heading, #0D141C);
  margin-bottom: 0.75rem;
}

.rfq-success-desc {
  font-size: 1rem;
  color: var(--color-text-body, #334155);
  max-width: 580px;
  margin: 0 auto 1.75rem auto;
  line-height: 1.6;
}

.rfq-success-meta-box {
  background: var(--color-bg-subtle, #F2F4EF);
  border: 1px solid var(--color-border-subtle, #E5E9E2);
  border-radius: 8px;
  padding: 1.25rem;
  max-width: 500px;
  margin: 0 auto 2rem auto;
  text-align: left;
  font-size: 0.875rem;
}

.rfq-success-meta-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--color-border-subtle, #E5E9E2);
}

.rfq-success-meta-row:last-child {
  border-bottom: none;
}

.rfq-success-meta-label {
  color: var(--color-text-muted, #64748B);
}

.rfq-success-meta-val {
  font-weight: 700;
  color: var(--color-text-heading, #0D141C);
}

.rfq-success-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* =============================================================================
   7. SUBMIT BUTTON & LOADING STATE
   ============================================================================= */

.rfq-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 48px;
  padding: 0.85rem 1.75rem;
  background-color: var(--color-primary-700, #104E46);
  color: #FFFFFF;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 1rem;
}

.rfq-submit-btn:hover:not(:disabled) {
  background-color: var(--color-primary-800, #0C3E38);
  box-shadow: 0 4px 12px rgba(16, 78, 70, 0.25);
}

.rfq-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.rfq-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #FFFFFF;
  animation: rfqSpin 0.7s linear infinite;
}

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

/* =============================================================================
   8. CUSTOM MACHINING CAPABILITIES MATRIX (custom-rfq.html)
   ============================================================================= */

.custom-capabilities-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1rem;
}

.custom-cap-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--color-text-body, #334155);
}

.custom-cap-icon {
  width: 24px;
  height: 24px;
  background-color: var(--color-primary-50, #EEF7F5);
  color: var(--color-primary-700, #104E46);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

/* =============================================================================
   9. RESPONSIVE BREAKPOINTS
   ============================================================================= */

@media (max-width: 992px) {
  .rfq-grid-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .rfq-sidebar-card {
    position: static;
  }
}

@media (max-width: 640px) {
  .rfq-form-card {
    padding: 1.5rem 1.25rem;
  }

  .rfq-form-row,
  .rfq-form-row.triple {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .rfq-page-title {
    font-size: 1.5rem;
  }

  .rfq-submit-btn {
    min-height: 48px;
    font-size: 0.9375rem;
  }
}