/**
 * Fillet Weld Calculator Component Styles (UI-Contract Compliant).
 * Scope: .csw-fillet-weld
 */

.csw-fillet-weld {
  --csw-bg-card: #FFFFFF;
  --csw-text-main: #17345C;
  --csw-text-muted: #5E6D82;
  --csw-border: #C9D0D8;
  --csw-focus: #109A8C;
  --csw-primary: #109A8C;
  --csw-primary-hover: #087E73;
  --csw-error: #B42318;
  --csw-warning: #A15C00;
  --csw-success: #067647;
  --csw-bg-accent: #F4F8F7;
  
  max-width: 720px;
  margin: 0 auto;
  padding: 28px;
  background-color: var(--csw-bg-card);
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(23, 52, 92, 0.08);
  color: var(--csw-text-main);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", sans-serif;
  box-sizing: border-box;
}

.csw-fillet-weld *,
.csw-fillet-weld *::before,
.csw-fillet-weld *::after {
  box-sizing: inherit;
}

/* Header */
.csw-fillet-weld__header {
  margin-bottom: 20px;
}

.csw-fillet-weld__title {
  margin: 0 0 8px 0;
  font-size: 24px;
  font-weight: 700;
  color: var(--csw-text-main);
  line-height: 1.25;
}

.csw-fillet-weld__description {
  margin: 0;
  font-size: 14px;
  color: var(--csw-text-muted);
  line-height: 1.5;
}

/* Divider */
.csw-fillet-weld__divider {
  border: 0;
  height: 1px;
  background-color: #E2E8F0;
  margin: 20px 0;
}

/* Mode Tabs */
.csw-fillet-weld__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  background-color: #F1F5F9;
  padding: 4px;
  border-radius: 8px;
}

.csw-fillet-weld__tab {
  flex: 1 1 auto;
  min-width: 120px;
  padding: 10px 14px;
  border: 0;
  background: transparent;
  color: var(--csw-text-muted);
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.csw-fillet-weld__tab:hover {
  color: var(--csw-text-main);
  background-color: rgba(255, 255, 255, 0.6);
}

.csw-fillet-weld__tab--active {
  background-color: #FFFFFF;
  color: var(--csw-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.csw-fillet-weld__tab:focus-visible {
  outline: 2px solid var(--csw-focus);
  outline-offset: 2px;
}

/* Form Grid */
.csw-fillet-weld__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px 20px;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .csw-fillet-weld__grid {
    grid-template-columns: 1fr 1fr;
  }

  .csw-fillet-weld__field--full {
    grid-column: span 2;
  }
}

/* Field Group */
.csw-fillet-weld__field {
  display: flex;
  flex-direction: column;
}

.csw-fillet-weld__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--csw-text-main);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.csw-fillet-weld__unit {
  font-weight: 400;
  color: var(--csw-text-muted);
  font-size: 12px;
}

.csw-fillet-weld__input,
.csw-fillet-weld__select {
  height: 42px;
  padding: 8px 12px;
  border: 1px solid var(--csw-border);
  border-radius: 4px;
  background-color: #FFFFFF;
  color: var(--csw-text-main);
  font-size: 15px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}

.csw-fillet-weld__input:focus,
.csw-fillet-weld__select:focus {
  outline: none;
  border-color: var(--csw-focus);
  box-shadow: 0 0 0 3px rgba(16, 154, 140, 0.15);
}

.csw-fillet-weld__help {
  font-size: 12px;
  color: var(--csw-text-muted);
  margin-top: 4px;
}

/* Checkbox Toggle */
.csw-fillet-weld__checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--csw-text-main);
  cursor: pointer;
  user-select: none;
  min-height: 42px;
}

.csw-fillet-weld__checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--csw-primary);
  cursor: pointer;
}

/* Accordion for Expert Parameters */
.csw-fillet-weld__accordion {
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  margin-bottom: 24px;
  background-color: var(--csw-bg-accent);
  overflow: hidden;
}

.csw-fillet-weld__accordion-summary {
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--csw-text-main);
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
}

.csw-fillet-weld__accordion-summary:hover {
  background-color: rgba(16, 154, 140, 0.05);
}

.csw-fillet-weld__accordion-body {
  padding: 16px;
  border-top: 1px solid #E2E8F0;
  background-color: #FFFFFF;
}

/* Submit Button */
.csw-fillet-weld__submit {
  width: 100%;
  min-height: 46px;
  background-color: var(--csw-primary);
  color: #FFFFFF;
  border: 0;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.csw-fillet-weld__submit:hover {
  background-color: var(--csw-primary-hover);
}

.csw-fillet-weld__submit:active {
  transform: translateY(1px);
}

.csw-fillet-weld__submit:focus-visible {
  outline: 2px solid var(--csw-focus);
  outline-offset: 2px;
}

/* Results Card */
.csw-fillet-weld__results {
  background-color: #FFFFFF;
  border-radius: 10px;
  border: 1px solid #E2E8F0;
  padding: 20px;
  margin-bottom: 24px;
}

.csw-fillet-weld__empty-result {
  border: 2px dashed #CBD5E1;
  border-radius: 8px;
  padding: 32px 16px;
  text-align: center;
  color: var(--csw-text-muted);
  font-size: 14px;
}

/* Status Badges */
.csw-fillet-weld__badge {
  display: block;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 16px;
}

.csw-fillet-weld__badge--success {
  background-color: #ECFDF5;
  color: var(--csw-success);
  border: 1px solid #A7F3D0;
}

.csw-fillet-weld__badge--warning {
  background-color: #FFFBEB;
  color: var(--csw-warning);
  border: 1px solid #FDE68A;
}

.csw-fillet-weld__badge--critical {
  background-color: #FEF2F2;
  color: var(--csw-error);
  border: 1px solid #FCA5A5;
}

/* KPI Summary Cards */
.csw-fillet-weld__kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.csw-fillet-weld__kpi {
  background-color: var(--csw-bg-accent);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid #E2E8F0;
  text-align: center;
}

.csw-fillet-weld__kpi-label {
  font-size: 12px;
  color: var(--csw-text-muted);
  margin-bottom: 4px;
}

.csw-fillet-weld__kpi-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--csw-text-main);
}

.csw-fillet-weld__kpi-unit {
  font-size: 13px;
  font-weight: 500;
  color: var(--csw-text-muted);
}

/* SVG Visualization Container */
.csw-fillet-weld__svg-container {
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  margin-bottom: 20px;
  overflow-x: auto;
}

.csw-fillet-weld__svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Summary Table */
.csw-fillet-weld__table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 16px;
  font-size: 13px;
}

.csw-fillet-weld__table th,
.csw-fillet-weld__table td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid #E2E8F0;
}

.csw-fillet-weld__table th {
  background-color: #F8FAFC;
  color: var(--csw-text-muted);
  font-weight: 600;
}

/* Educational Tip Box */
.csw-fillet-weld__tip {
  background-color: #EFF6FF;
  border-left: 4px solid #3B82F6;
  border-radius: 0 6px 6px 0;
  padding: 12px 16px;
  font-size: 13px;
  color: #1E40AF;
  line-height: 1.5;
  margin-top: 16px;
}

.csw-fillet-weld__tip-title {
  font-weight: 700;
  margin-bottom: 4px;
}

/* Converter Tab Specific Styles */
.csw-fillet-weld__converter-box {
  background-color: var(--csw-bg-accent);
  border: 1px solid #CBD5E1;
  border-radius: 8px;
  padding: 20px;
  text-align: center;
}

.csw-fillet-weld__converter-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.csw-fillet-weld__converter-arrow {
  font-size: 20px;
  color: var(--csw-primary);
  font-weight: bold;
}

/* ===== SVG Interactive Hover States (desktop only) ===== */
@media (hover: hover) {
  .csw-svg-interactive {
    cursor: pointer;
    transition: filter 0.2s ease;
  }

  /* Weld Triangle Hover */
  .csw-svg-weld polygon {
    transition: fill 0.25s ease, fill-opacity 0.25s ease;
  }
  .csw-svg-weld polyline {
    transition: stroke-width 0.2s ease, stroke 0.2s ease;
  }
  .csw-svg-weld line {
    transition: stroke-width 0.2s ease;
  }
  .csw-svg-weld text.csw-svg-label {
    transition: fill 0.2s ease;
  }
  .csw-svg-weld:hover polygon {
    fill: #34D399;
    fill-opacity: 1;
  }
  .csw-svg-weld:hover polyline {
    stroke: #047857;
    stroke-width: 4.5;
  }
  .csw-svg-weld:hover line {
    stroke-width: 3.5;
  }
  .csw-svg-weld:hover text.csw-svg-label {
    fill: #022C22;
  }

  /* Plate Hover */
  .csw-svg-plate rect {
    transition: fill 0.25s ease, stroke 0.25s ease;
  }
  .csw-svg-plate:hover > rect {
    fill: #CBD5E1;
    stroke: #1E293B;
    stroke-width: 2.5;
  }

  /* Force Arrow Hover */
  .csw-svg-force line {
    transition: stroke-width 0.2s ease, stroke 0.2s ease;
  }
  .csw-svg-force text.csw-svg-label {
    transition: fill 0.2s ease;
  }
  .csw-svg-force:hover line {
    stroke: #7F1D1D;
    stroke-width: 4;
  }
  .csw-svg-force:hover text.csw-svg-label {
    fill: #7F1D1D;
  }

  /* Tooltip Popover Cards */
  .csw-svg-tip {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }
  .csw-svg-tip rect {
    filter: drop-shadow(0 2px 5px rgba(0,0,0,0.12));
  }
  .csw-svg-interactive:hover .csw-svg-tip {
    opacity: 1;
  }
}