/* Knowledge pages — ISA-95 + MESA-11 infographics */

/* ════════ ISA-95 ════════════════════════════════════════ */

/* Interactive stage: pyramid + detail panel */
.kt-isa-stage {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 32px;
  align-items: stretch;
}
@media (max-width: 980px) { .kt-isa-stage { grid-template-columns: 1fr; } }

.kt-isa-board {
  background: var(--kt-navy-900);
  border-radius: var(--kt-radius-md);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 28px 24px 20px;
  position: relative;
  overflow: hidden;
}
.kt-isa-board::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,184,212,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,184,212,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.kt-isa-board-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
  position: relative;
}
.kt-isa-pyramid {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  position: relative;
}
.kt-isa-level {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  gap: 10px;
  border: none;
  color: #fff;
  padding: 0 7%;
  min-height: 62px;
  background: rgba(255,255,255,0.06);
  transition: background var(--kt-transition-base), filter var(--kt-transition-base);
  text-align: left;
}
.kt-isa-level:hover { background: rgba(0,184,212,0.16); }
.kt-isa-level.is-active { background: var(--kt-cyan-500); }
.kt-isa-level.is-active .kt-isa-level-id,
.kt-isa-level.is-active .kt-isa-level-name { color: var(--kt-navy-900); }
.kt-isa-level.is-active .kt-isa-level-sys { color: var(--kt-navy-700); }
.kt-isa-level-id {
  font-family: var(--kt-font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--kt-cyan-300);
}
.kt-isa-level-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.2;
  color: #fff;
}
.kt-isa-level-sys {
  display: block;
  font-family: var(--kt-font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--kt-navy-200);
  margin-top: 3px;
  font-weight: 400;
}
/* trapezoid slants, widths hand-tuned per level */
.kt-isa-level[data-level="L4"] { width: 50%; clip-path: polygon(14% 0, 86% 0, 100% 100%, 0 100%); }
.kt-isa-level[data-level="L3"] { width: 62%; clip-path: polygon(10.5% 0, 89.5% 0, 100% 100%, 0 100%); }
.kt-isa-level[data-level="L2"] { width: 74%; clip-path: polygon(8.5% 0, 91.5% 0, 100% 100%, 0 100%); }
.kt-isa-level[data-level="L1"] { width: 86%; clip-path: polygon(7% 0, 93% 0, 100% 100%, 0 100%); }
.kt-isa-level[data-level="L0"] { width: 98%; clip-path: polygon(6.5% 0, 93.5% 0, 100% 100%, 0 100%); }
@media (max-width: 640px) {
  .kt-isa-level { padding: 0 5%; min-height: 58px; }
  .kt-isa-level-name { font-size: 12px; }
  .kt-isa-level-sys { display: none; }
}
.kt-isa-board-foot {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  position: relative;
  flex-wrap: wrap;
}

/* Detail panel */
.kt-isa-detail {
  background: #fff;
  border: 1px solid var(--kt-gray-200);
  border-radius: var(--kt-radius-md);
  padding: 28px;
  position: relative;
}
.kt-isa-detail::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--kt-cyan-500);
  border-radius: 8px 8px 0 0;
}
.kt-isa-detail-tag {
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--kt-cyan-700);
  font-weight: 600;
  margin-bottom: 10px;
}
.kt-isa-detail h3 {
  font-family: var(--kt-font-sans);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--kt-navy-900);
  margin: 0 0 12px;
}
.kt-isa-detail p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--kt-gray-700);
  margin: 0 0 18px;
  text-wrap: pretty;
}
.kt-isa-detail-rows { border-top: 1px solid var(--kt-gray-200); }
.kt-isa-detail-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--kt-gray-100);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--kt-gray-800);
}
.kt-isa-detail-row h4 {
  font-family: var(--kt-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--kt-cyan-700);
  margin: 0;
  padding-top: 3px;
  font-weight: 600;
}

/* Comparison table */
.kt-compare { width: 100%; border-collapse: collapse; background: #fff; }
.kt-compare th, .kt-compare td {
  padding: 16px 18px;
  text-align: left;
  vertical-align: top;
  border: 1px solid var(--kt-gray-200);
  font-size: 14px;
  line-height: 1.5;
}
.kt-compare thead th {
  background: var(--kt-navy-900);
  color: #fff;
  font-family: var(--kt-font-sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.kt-compare thead th span {
  display: block;
  font-family: var(--kt-font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--kt-cyan-300);
  margin-top: 4px;
}
.kt-compare tbody th {
  background: var(--kt-gray-50);
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--kt-gray-600);
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
}
.kt-compare td.is-mes { background: var(--kt-cyan-50); }
.kt-compare thead th.is-mes { background: var(--kt-cyan-600); }
.kt-compare td strong { color: var(--kt-navy-900); }

/* Data-flow diagram */
.kt-flow { max-width: 880px; margin: 0 auto; }
.kt-flow-sys {
  background: #fff;
  border: 1px solid var(--kt-gray-300);
  border-radius: var(--kt-radius-md);
  padding: 20px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  position: relative;
}
.kt-flow-sys.is-mes {
  background: var(--kt-navy-900);
  border-color: var(--kt-navy-900);
  box-shadow: var(--kt-shadow-cyan);
}
.kt-flow-sys.is-mes .kt-flow-sys-name { color: #fff; }
.kt-flow-sys.is-mes .kt-flow-sys-desc { color: var(--kt-gray-300); }
.kt-flow-sys-lvl {
  font-family: var(--kt-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--kt-cyan-700);
  background: var(--kt-cyan-50);
  border: 1px solid rgba(0,184,212,0.25);
  border-radius: var(--kt-radius-sm);
  padding: 4px 8px;
  white-space: nowrap;
}
.kt-flow-sys.is-mes .kt-flow-sys-lvl {
  background: rgba(0,184,212,0.15);
  color: var(--kt-cyan-300);
}
.kt-flow-sys-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--kt-navy-900);
  letter-spacing: -0.01em;
}
.kt-flow-sys-desc { font-size: 13px; color: var(--kt-gray-600); margin-top: 2px; line-height: 1.45; }
.kt-flow-sys-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

.kt-flow-link {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 96px;
  padding: 10px 24px;
}
.kt-flow-dir {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 12px;
}
.kt-flow-dir.up { flex-direction: row-reverse; text-align: right; }
.kt-flow-pipe {
  position: relative;
  width: 2px;
  align-self: stretch;
  background-image: repeating-linear-gradient(180deg, var(--kt-cyan-500) 0 6px, transparent 6px 12px);
  background-size: 2px 12px;
  animation: kt-flow-down 1.2s linear infinite;
  flex-shrink: 0;
}
.kt-flow-dir.up .kt-flow-pipe {
  animation-name: kt-flow-up;
  background-image: repeating-linear-gradient(180deg, var(--kt-gray-500) 0 6px, transparent 6px 12px);
}
@keyframes kt-flow-down { from { background-position: 0 0; } to { background-position: 0 12px; } }
@keyframes kt-flow-up { from { background-position: 0 12px; } to { background-position: 0 0; } }
.kt-flow-pipe::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
}
.kt-flow-dir.down .kt-flow-pipe::after { bottom: -2px; border-top: 7px solid var(--kt-cyan-500); }
.kt-flow-dir.up .kt-flow-pipe::after { top: -2px; border-bottom: 7px solid var(--kt-gray-500); }
.kt-flow-dir-label {
  font-family: var(--kt-font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--kt-gray-600);
}
.kt-flow-dir-label strong {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--kt-cyan-700);
  font-weight: 600;
  margin-bottom: 2px;
}
.kt-flow-dir.up .kt-flow-dir-label strong { color: var(--kt-gray-700); }
@media (max-width: 640px) {
  .kt-flow-link { padding: 8px 4px; }
  .kt-flow-dir { padding: 0 4px; gap: 8px; }
  .kt-flow-dir-label { font-size: 9px; }
  .kt-flow-sys { grid-template-columns: auto 1fr; }
  .kt-flow-sys-tags { display: none; }
}

/* Time-horizon ruler */
.kt-horizon {
  display: grid;
  grid-template-columns: 110px repeat(8, 1fr);
  gap: 6px 0;
  align-items: center;
}
.kt-horizon-head {
  font-family: var(--kt-font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--kt-gray-500);
  text-align: center;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--kt-gray-200);
}
.kt-horizon-label {
  font-family: var(--kt-font-sans);
  font-size: 13px;
  font-weight: 700;
  color: var(--kt-navy-900);
  padding-right: 14px;
}
.kt-horizon-bar {
  height: 26px;
  border-radius: var(--kt-radius-sm);
  position: relative;
}
.kt-horizon-bar.erp { grid-column: 2 / 5; background: linear-gradient(90deg, var(--kt-navy-600), var(--kt-navy-400)); }
.kt-horizon-bar.mes { grid-column: 4 / 8; background: linear-gradient(90deg, var(--kt-cyan-600), var(--kt-cyan-400)); }
.kt-horizon-bar.scada { grid-column: 7 / 10; background: linear-gradient(90deg, var(--kt-gray-600), var(--kt-gray-400)); }
@media (max-width: 640px) {
  .kt-horizon { grid-template-columns: 70px repeat(8, 1fr); }
  .kt-horizon-head { font-size: 7.5px; letter-spacing: 0.04em; }
  .kt-horizon-label { font-size: 11px; }
}

/* ════════ MESA-11 ═══════════════════════════════════════ */

.kt-mesa-legend {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.kt-mesa-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--kt-gray-700);
  padding: 6px 12px;
  border: 1px solid var(--kt-gray-200);
  border-radius: var(--kt-radius-full);
  background: #fff;
}
.kt-mesa-dot { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }
.kt-mesa-dot.c1 { background: var(--kt-navy-600); }
.kt-mesa-dot.c2 { background: var(--kt-cyan-500); }
.kt-mesa-dot.c3 { background: var(--kt-cyan-700); }
.kt-mesa-dot.c4 { background: var(--kt-navy-900); }

.kt-mesa-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 1000px) { .kt-mesa-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .kt-mesa-grid { grid-template-columns: 1fr; } }

.kt-mesa-card {
  background: #fff;
  border: 1px solid var(--kt-gray-200);
  border-radius: var(--kt-radius-md);
  padding: 24px;
  position: relative;
  transition: border-color var(--kt-transition-base), box-shadow var(--kt-transition-base), transform var(--kt-transition-base);
  display: flex;
  flex-direction: column;
}
.kt-mesa-card:hover {
  border-color: var(--kt-cyan-400);
  box-shadow: 0 12px 32px rgba(0,184,212,0.1);
  transform: translateY(-2px);
}
.kt-mesa-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.kt-mesa-num {
  font-family: var(--kt-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--kt-cyan-600);
}
.kt-mesa-card svg, .kt-mesa-card i {
  width: 22px; height: 22px;
  color: var(--kt-navy-600);
}
.kt-mesa-card h3 {
  font-family: var(--kt-font-sans);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--kt-navy-900);
  margin: 0 0 10px;
}
.kt-mesa-card p {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--kt-gray-700);
  margin: 0 0 18px;
  flex: 1;
  text-wrap: pretty;
}
.kt-mesa-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--kt-gray-100);
}
.kt-mesa-cluster {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--kt-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--kt-gray-600);
}
.kt-mesa-trak {
  font-family: var(--kt-font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--kt-cyan-700);
  background: var(--kt-cyan-50);
  border: 1px solid rgba(0,184,212,0.2);
  padding: 3px 8px;
  border-radius: var(--kt-radius-sm);
}

/* MESA band — where the 11 functions live in the stack */
.kt-mesa-band {
  background: var(--kt-navy-900);
  border-radius: var(--kt-radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 48px;
}
.kt-mesa-band-row {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.03);
}
.kt-mesa-band-row.is-core {
  background: rgba(0,184,212,0.1);
  border-color: rgba(0,184,212,0.4);
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  padding: 18px;
}
.kt-mesa-band-lvl {
  font-family: var(--kt-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--kt-cyan-300);
  min-width: 30px;
}
.kt-mesa-band-name { font-size: 13px; font-weight: 600; color: #fff; }
.kt-mesa-band-note {
  font-family: var(--kt-font-mono);
  font-size: 10px;
  color: var(--kt-navy-200);
  letter-spacing: 0.06em;
  margin-left: auto;
}
.kt-mesa-band-fns {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.kt-mesa-band-fns span {
  font-family: var(--kt-font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--kt-cyan-200);
  background: rgba(0,184,212,0.12);
  border: 1px solid rgba(0,184,212,0.25);
  padding: 4px 9px;
  border-radius: 3px;
}
@media (max-width: 640px) {
  .kt-mesa-band-note { display: none; }
}

/* ── Time-horizon clock chart (redesigned) ────────────────── */
.kt-clocks {
  --ck-lbl: 160px;
  background: #fff;
  border: 1px solid var(--kt-gray-200);
  border-radius: var(--kt-radius-md);
  overflow: hidden;
}

.kt-clocks-head {
  display: grid;
  grid-template-columns: var(--ck-lbl) repeat(8, 1fr);
  background: var(--kt-gray-50);
  border-bottom: 1px solid var(--kt-gray-200);
}

.kt-clocks-corner {
  border-right: 1px solid var(--kt-gray-200);
}

/* inset box-shadow for column separators — doesn't affect cell width */
.kt-clocks-hd {
  font-family: var(--kt-font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--kt-gray-500);
  text-align: center;
  padding: 11px 4px;
  box-shadow: inset -1px 0 0 var(--kt-gray-200);
}
.kt-clocks-hd:last-child { box-shadow: none; }

.kt-clocks-row {
  display: grid;
  grid-template-columns: var(--ck-lbl) 1fr;
  border-bottom: 1px solid var(--kt-gray-100);
  align-items: stretch;
}
.kt-clocks-row:last-child { border-bottom: none; }
.kt-clocks-focus { background: var(--kt-cyan-50); }

.kt-clocks-lbl {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-right: 1px solid var(--kt-gray-200);
}
.kt-clocks-focus .kt-clocks-lbl {
  border-right-color: rgba(0, 184, 212, 0.25);
}

.kt-clocks-lbl strong {
  font-family: var(--kt-font-sans);
  font-size: 13px;
  font-weight: 700;
  color: var(--kt-navy-900);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.kt-clocks-tag {
  font-family: var(--kt-font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--kt-gray-600);
  background: var(--kt-gray-100);
  border-radius: 3px;
  padding: 2px 6px;
  white-space: nowrap;
  flex-shrink: 0;
}
.kt-clocks-tag.cyan {
  color: var(--kt-cyan-700);
  background: rgba(0, 184, 212, 0.14);
}

/* track: same width as 8 header cols — separator lines use the same 1/8 math */
.kt-clocks-track {
  position: relative;
  height: 66px;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent calc(100% / 8 - 1px),
    var(--kt-gray-100) calc(100% / 8 - 1px),
    var(--kt-gray-100) calc(100% / 8)
  );
}
.kt-clocks-focus .kt-clocks-track {
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent calc(100% / 8 - 1px),
    rgba(0, 184, 212, 0.12) calc(100% / 8 - 1px),
    rgba(0, 184, 212, 0.12) calc(100% / 8)
  );
}

/* bar: percentage-positioned so --s and --e map exactly onto the 8 columns */
.kt-clocks-bar {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  height: 38px;
  border-radius: 5px;
  left: calc(var(--s) * 100% / 8);
  width: calc((var(--e) - var(--s)) * 100% / 8);
}
.kt-clocks-bar.erp   { background: var(--kt-navy-800); }
.kt-clocks-bar.mes   { background: var(--kt-cyan-500); box-shadow: 0 2px 14px rgba(0, 184, 212, 0.3); }
.kt-clocks-bar.scada { background: var(--kt-gray-500); }

@media (max-width: 640px) {
  .kt-clocks { --ck-lbl: 84px; }
  .kt-clocks-hd { font-size: 7.5px; letter-spacing: 0.04em; padding: 8px 2px; }
  .kt-clocks-lbl { padding: 12px 10px; gap: 6px; }
  .kt-clocks-lbl strong { font-size: 11px; }
  .kt-clocks-track { height: 52px; }
  .kt-clocks-bar { height: 28px; }
  .kt-clocks-tag { display: none; }
}