/* ==========================================================================
   calc.css — Industrial & PLC Engineering Calculators Styling
   Compatible with kumstat.com Dark/Light Themes & Cyber-Glassmorphism
   ========================================================================== */

:root {
  --calc-cyan: #38bdf8;
  --calc-orange: #f97316;
  --calc-green: #22c55e;
  --calc-purple: #c084fc;
  --calc-amber: #eab308;
  --calc-red: #ef4444;

  --calc-bg: #06060c;
  --calc-card-bg: rgba(15, 23, 42, 0.45);
  --calc-card-border: rgba(56, 189, 248, 0.16);
  --calc-card-hover: rgba(56, 189, 248, 0.35);
  --calc-input-bg: rgba(8, 12, 22, 0.7);
  --calc-input-border: rgba(56, 189, 248, 0.22);
  --calc-result-bg: rgba(6, 10, 18, 0.6);
  --calc-font-mono: 'JetBrains Mono', monospace;
  --calc-font-body: 'Plus Jakarta Sans', sans-serif;
}

[data-theme="light"] {
  --calc-bg: #f8fafc;
  --calc-card-bg: rgba(255, 255, 255, 0.85);
  --calc-card-border: rgba(148, 163, 184, 0.28);
  --calc-card-hover: rgba(2, 132, 199, 0.45);
  --calc-input-bg: rgba(248, 250, 252, 0.9);
  --calc-input-border: rgba(148, 163, 184, 0.4);
  --calc-result-bg: rgba(241, 245, 249, 0.75);
}

body.calc-page {
  background-color: var(--calc-bg);
  color: var(--text-color, #f8fafc);
  font-family: var(--calc-font-body);
  min-height: 100vh;
  margin: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.calc-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem 1rem;
}

/* Header — layout handled by .page-header in style.css; calc accent overrides */
.calc-header {
  border-bottom-color: var(--calc-card-border);
}

.calc-header .page-breadcrumb {
  background: var(--calc-card-bg);
  border-color: var(--calc-card-border);
}

.calc-header .page-breadcrumb:hover {
  border-color: var(--calc-cyan);
  color: var(--calc-cyan);
}

.calc-header .btn-page-ctrl {
  background: var(--calc-card-bg);
  border-color: var(--calc-card-border);
  color: var(--text-muted, #94a3b8);
}

.calc-header .btn-page-ctrl:hover {
  border-color: var(--calc-cyan);
  color: var(--calc-cyan);
  background: rgba(56, 189, 248, 0.1);
}

/* Sticky Quick Directory */
.calc-directory-sticky {
  position: sticky;
  top: 0.75rem;
  z-index: 50;
  background: var(--calc-card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--calc-card-border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.calc-dir-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.calc-dir-label {
  font-family: var(--calc-font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--calc-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.calc-dir-controls {
  display: flex;
  gap: 0.5rem;
}

.btn-ctrl {
  background: transparent;
  border: 1px solid var(--calc-card-border);
  color: var(--text-muted, #94a3b8);
  font-family: var(--calc-font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-ctrl:hover {
  border-color: var(--calc-cyan);
  color: var(--text-color, #f8fafc);
  background: rgba(56, 189, 248, 0.1);
}

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

.calc-pill {
  font-family: var(--calc-font-mono);
  font-size: 0.75rem;
  color: var(--text-muted, #94a3b8);
  background: var(--calc-input-bg);
  border: 1px solid var(--calc-card-border);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.calc-pill:hover, .calc-pill.active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--calc-cyan);
  color: var(--calc-cyan);
  transform: translateY(-1px);
}

/* Accordion Card Deck */
.calc-deck {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calc-card {
  background: var(--calc-card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--calc-card-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.calc-card:hover {
  border-color: var(--calc-card-hover);
}

.calc-card.is-expanded {
  border-color: var(--calc-card-hover);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
}

/* Card Header (Always Visible) */
.calc-card-header {
  padding: 1rem 1.25rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  background: rgba(255, 255, 255, 0.015);
  transition: background 0.2s ease;
}

.calc-card-header:hover {
  background: rgba(56, 189, 248, 0.04);
}

.calc-header-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.calc-icon-box {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  background: rgba(56, 189, 248, 0.1);
  color: var(--calc-cyan);
  flex-shrink: 0;
}

.calc-suite-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.calc-badge {
  font-family: var(--calc-font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-net { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.3); }
.badge-plc { background: rgba(192, 132, 252, 0.15); color: #c084fc; border: 1px solid rgba(192, 132, 252, 0.3); }
.badge-field { background: rgba(34, 197, 94, 0.15); color: #22c55e; border: 1px solid rgba(34, 197, 94, 0.3); }
.badge-mat { background: rgba(249, 115, 22, 0.15); color: #f97316; border: 1px solid rgba(249, 115, 22, 0.3); }
.badge-drive { background: rgba(234, 179, 8, 0.15); color: #eab308; border: 1px solid rgba(234, 179, 8, 0.3); }
.badge-asrs { background: rgba(236, 72, 153, 0.15); color: #ec4899; border: 1px solid rgba(236, 72, 153, 0.3); }
.badge-scl { background: rgba(14, 165, 233, 0.15); color: #0ea5e9; border: 1px solid rgba(14, 165, 233, 0.3); }
.badge-sens { background: rgba(168, 85, 247, 0.15); color: #a855f7; border: 1px solid rgba(168, 85, 247, 0.3); }

.calc-suite-summary {
  font-size: 0.82rem;
  color: var(--text-muted, #94a3b8);
  margin-top: 0.2rem;
}

.calc-toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--calc-font-mono);
  font-size: 0.75rem;
  color: var(--text-muted, #94a3b8);
  background: var(--calc-input-bg);
  border: 1px solid var(--calc-card-border);
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.calc-card:hover .calc-toggle-btn {
  color: var(--calc-cyan);
  border-color: var(--calc-cyan);
}

.calc-chevron {
  width: 16px;
  height: 16px;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.calc-card.is-expanded .calc-chevron {
  transform: rotate(180deg);
}

/* Collapsible Content Area */
.calc-card-body {
  display: none;
  border-top: 1px solid var(--calc-card-border);
  padding: 1.5rem;
  animation: calcSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.calc-card.is-expanded .calc-card-body {
  display: block;
}

@keyframes calcSlideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Two Column Layout (Input vs Output) */
.calc-grid-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 820px) {
  .calc-grid-duo {
    grid-template-columns: 1fr;
  }
}

.calc-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.calc-panel-title {
  font-family: var(--calc-font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-muted, #94a3b8);
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Form Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-color, #f8fafc);
  display: flex;
  justify-content: space-between;
}

.form-sub {
  font-family: var(--calc-font-mono);
  font-size: 0.72rem;
  color: var(--text-muted, #94a3b8);
}

.calc-input, .calc-select {
  background: var(--calc-input-bg);
  border: 1px solid var(--calc-input-border);
  color: var(--text-color, #f8fafc);
  font-family: var(--calc-font-mono);
  font-size: 0.9rem;
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.calc-input:focus, .calc-select:focus {
  border-color: var(--calc-cyan);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.calc-range {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--calc-card-border);
  outline: none;
  margin: 0.4rem 0;
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--calc-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
  transition: transform 0.1s ease;
}

.calc-range::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Result Displays */
.result-box {
  background: var(--calc-result-bg);
  border: 1px solid var(--calc-card-border);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.86rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
  padding-bottom: 0.45rem;
}

.result-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.result-kpi {
  font-family: var(--calc-font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--calc-cyan);
}

.kpi-large {
  font-size: 1.4rem;
  color: var(--calc-orange);
}

.kpi-success { color: var(--calc-green); }
.kpi-warning { color: var(--calc-amber); }
.kpi-danger  { color: var(--calc-red); }

/* Bitmask matrix / Interactive bit toggles */
.bit-matrix {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 3px;
  margin: 0.5rem 0;
}

.bit-matrix-32 {
  grid-template-columns: repeat(32, 1fr);
}

@media (max-width: 700px) {
  .bit-matrix {
    grid-template-columns: repeat(8, 1fr);
  }
  .bit-matrix-32 {
    grid-template-columns: repeat(8, 1fr);
  }
}

.bit-cell {
  background: var(--calc-input-bg);
  border: 1px solid var(--calc-card-border);
  color: var(--text-muted, #94a3b8);
  font-family: var(--calc-font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-align: center;
  padding: 0.4rem 0;
  cursor: pointer;
  border-radius: 4px;
  user-select: none;
  transition: all 0.15s ease;
  position: relative;
}

.bit-cell:hover {
  border-color: var(--calc-cyan);
  color: var(--text-color, #f8fafc);
  transform: translateY(-1px);
}

.bit-cell.is-one {
  background: #0284c7 !important;
  border-color: #38bdf8 !important;
  color: #ffffff !important;
  font-weight: 800 !important;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.65), inset 0 0 6px rgba(255, 255, 255, 0.4) !important;
}

.bit-cell.is-net {
  background: rgba(34, 197, 94, 0.25);
  border-color: #22c55e;
  color: #4ade80;
}

.bit-cell.is-net.is-one {
  background: #16a34a !important;
  border-color: #4ade80 !important;
  color: #ffffff !important;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.65), inset 0 0 6px rgba(255, 255, 255, 0.4) !important;
}

/* SCL Code snippet container */
.scl-code-container {
  background: #020408;
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.scl-header {
  background: rgba(255, 255, 255, 0.04);
  padding: 0.35rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--calc-font-mono);
  font-size: 0.72rem;
  color: var(--text-muted, #94a3b8);
}

.scl-code {
  font-family: var(--calc-font-mono);
  font-size: 0.78rem;
  color: #7dd3fc;
  padding: 0.75rem;
  margin: 0;
  overflow-x: auto;
  line-height: 1.45;
  white-space: pre;
}

.btn-copy {
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid var(--calc-cyan);
  color: var(--calc-cyan);
  font-family: var(--calc-font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-copy:hover {
  background: var(--calc-cyan);
  color: #000;
}