/* ==========================================================================
   CONCRETE SLAB CALCULATOR ENGINE - STYLESHEET
   Component Architecture: Interactive Estimating Suite
   ========================================================================== */

.calculator-app-wrapper {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin: 2rem 0;
}

/* Calculator Header Bar */
.calc-header {
  background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-800) 100%);
  color: #ffffff;
  padding: 1.5rem 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 3px solid var(--primary-600);
}

.calc-header-title h2 {
  font-size: 1.375rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.25rem;
  border: none;
  padding: 0;
}

.calc-header-title p {
  font-size: 0.8125rem;
  color: var(--slate-400);
  margin: 0;
}

/* Unit System Switcher */
.unit-toggle-group {
  display: flex;
  background: var(--slate-950);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-700);
}

.unit-btn {
  background: transparent;
  border: none;
  color: var(--slate-400);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.unit-btn.active {
  background: var(--primary-600);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

/* Calculator Layout Grid */
.calc-body-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  min-height: 600px;
}

/* Left Column: Form Controls */
.calc-inputs-col {
  padding: 2rem;
  background: #ffffff;
  border-right: 1px solid var(--slate-200);
}

/* Right Column: Output Results Dashboard */
.calc-results-col {
  padding: 2rem;
  background: var(--slate-50);
  display: flex;
  flex-direction: column;
}

/* Preset Application Buttons */
.preset-selector-group {
  margin-bottom: 1.75rem;
}

.calc-section-label {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate-500);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preset-pills-scroll {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.preset-btn {
  background: var(--slate-100);
  border: 1px solid var(--slate-200);
  color: var(--slate-700);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-btn:hover {
  background: var(--primary-50);
  border-color: var(--primary-300);
  color: var(--primary-700);
}

.preset-btn.active {
  background: var(--primary-600);
  border-color: var(--primary-600);
  color: #ffffff;
}

/* Form Groups & Inputs */
.input-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.input-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.calc-form-group {
  margin-bottom: 1.25rem;
}

.calc-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--slate-700);
  margin-bottom: 0.35rem;
}

.calc-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.calc-input-addon-left {
  position: absolute;
  left: 0.85rem;
  color: var(--slate-400);
  font-weight: 700;
  font-size: 0.875rem;
  pointer-events: none;
}

.calc-input-addon-right {
  position: absolute;
  right: 0.85rem;
  color: var(--slate-500);
  font-weight: 600;
  font-size: 0.8125rem;
  pointer-events: none;
}

.calc-control {
  width: 100%;
  height: 42px;
  padding: 0.5rem 0.85rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--slate-900);
  background-color: #ffffff;
  border: 1.5px solid var(--slate-300);
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
}

.has-addon-left .calc-control {
  padding-left: 2rem;
}

.has-addon-right .calc-control {
  padding-right: 3.5rem;
}

.calc-control:focus {
  outline: none;
  border-color: var(--primary-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

select.calc-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748B'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.15rem;
  padding-right: 2.25rem;
  cursor: pointer;
}

/* Accordion Sections for Scope Breakdown */
.scope-accordion {
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  margin-bottom: 0.85rem;
  background: #ffffff;
  overflow: hidden;
}

.scope-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--slate-100);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background-color 0.15s ease;
}

.scope-header:hover {
  background: var(--slate-200);
}

.scope-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.scope-toggle-checkbox {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--primary-600);
  cursor: pointer;
}

.scope-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--slate-800);
}

.scope-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-700);
  background: var(--primary-100);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
}

.scope-chevron {
  font-size: 0.875rem;
  color: var(--slate-500);
  transition: transform 0.2s ease;
}

.scope-accordion.open .scope-chevron {
  transform: rotate(180deg);
}

.scope-body {
  display: none;
  padding: 1rem;
  border-top: 1px solid var(--slate-200);
  background: #ffffff;
}

.scope-accordion.open .scope-body {
  display: block;
}

/* ==========================================================================
   RESULTS DASHBOARD & BREAKDOWN
   ========================================================================== */

.results-hero-card {
  background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-950) 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
  border: 1px solid var(--slate-800);
}

.results-hero-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate-400);
  margin-bottom: 0.25rem;
}

.results-hero-total {
  font-size: 2.25rem;
  font-weight: 900;
  color: #38bdf8;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.results-hero-subrates {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--slate-300);
  border-top: 1px solid var(--slate-800);
  padding-top: 0.75rem;
  margin-top: 0.75rem;
}

.results-hero-subrates strong {
  color: #ffffff;
}

/* Key Quantities Metric Grid */
.quantities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.quantity-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
}

.quantity-card-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--slate-500);
  margin-bottom: 0.2rem;
}

.quantity-card-value {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--slate-900);
}

.quantity-card-note {
  font-size: 0.6875rem;
  color: var(--slate-400);
}

/* Visual Cost Distribution Bar */
.visual-cost-bar-wrapper {
  margin-bottom: 1.5rem;
  background: #ffffff;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
}

.cost-bar-container {
  display: flex;
  height: 14px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--slate-200);
  margin-bottom: 0.75rem;
}

.cost-bar-seg {
  height: 100%;
  transition: width 0.3s ease;
}

.seg-material { background-color: #2563eb; }
.seg-labor { background-color: #10b981; }
.seg-base { background-color: #f59e0b; }
.seg-reinforce { background-color: #8b5cf6; }
.seg-forms { background-color: #ec4899; }
.seg-other { background-color: #64748b; }

.cost-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--slate-600);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
}

/* Detailed Bill of Quantities Table */
.boq-table-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.boq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.boq-table th {
  background: var(--slate-100);
  color: var(--slate-700);
  font-weight: 700;
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--slate-200);
}

.boq-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--slate-100);
  color: var(--slate-700);
}

.boq-table tr.total-row {
  background: var(--primary-50);
  font-weight: 800;
  color: var(--primary-900);
}

.boq-table tr.total-row td {
  border-top: 2px solid var(--primary-200);
  font-size: 0.875rem;
}

/* User Action Buttons */
.calc-actions-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.calc-action-btn {
  flex: 1;
  min-width: 100px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-300);
  background: #ffffff;
  color: var(--slate-700);
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-action-btn:hover {
  background: var(--slate-100);
  color: var(--slate-900);
  border-color: var(--slate-400);
}

.calc-action-btn.btn-primary {
  background: var(--primary-600);
  color: #ffffff;
  border-color: var(--primary-600);
}

.calc-action-btn.btn-primary:hover {
  background: var(--primary-700);
}

/* Toast Notification */
.calc-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--slate-900);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-xl);
  display: none;
  z-index: 9999;
  border-left: 4px solid var(--accent-emerald);
}

/* ==========================================================================
   SUPPORTING CALCULATOR CARDS & MODES
   ========================================================================== */

.subcalc-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.subcalc-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}

.subcalc-desc {
  font-size: 0.875rem;
  color: var(--slate-600);
  margin-bottom: 1.25rem;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .calc-body-grid {
    grid-template-columns: 1fr;
  }
  .calc-inputs-col {
    border-right: none;
    border-bottom: 1px solid var(--slate-200);
    padding: 1.25rem;
  }
  .calc-results-col {
    padding: 1.25rem;
  }
}

@media (max-width: 600px) {
  .input-grid-2, .input-grid-3 {
    grid-template-columns: 1fr;
  }
  .quantities-grid {
    grid-template-columns: 1fr;
  }
  .calc-header {
    padding: 1rem 1.25rem;
  }
}