/* ─── Layout Modules ────────────────────────────── */

/* ── Grid cards ── */
.grid { display: grid; gap: var(--sp-4); }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
.grid-1-2 { grid-template-columns: 1fr 2fr; }
.grid-2-1 { grid-template-columns: 2fr 1fr; }

/* ── Process / Flow ── */
.flow {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.flow-step {
  flex: 1;
  border-radius: var(--r-lg);
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
  box-shadow: var(--sh-sm);
}

.flow-step-num {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .7;
  margin-bottom: var(--sp-2);
}

.flow-step-title {
  font-size: var(--fs-xl);
  font-weight: 800;
  margin-bottom: var(--sp-2);
  word-break: keep-all;
}

.flow-step-desc {
  font-size: var(--fs-sm);
  line-height: 1.55;
  opacity: .85;
  word-break: keep-all;
}

.flow-arrow {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  font-size: 1.6rem;
  color: var(--c-pale);
  margin: 0 var(--sp-1);
}

/* ── Compare / VS ── */
.compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--sp-5);
  align-items: start;
}

.compare-box {
  border-radius: var(--r-lg);
  padding: var(--sp-6) var(--sp-5);
  box-shadow: var(--sh-sm);
}

.compare-box h3 {
  font-size: var(--fs-xl);
  font-weight: 800;
  margin-bottom: var(--sp-4);
  word-break: keep-all;
}

.compare-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.compare-box li {
  font-size: var(--fs-base);
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
  word-break: keep-all;
}

.compare-box li::before {
  content: '→';
  position: absolute;
  left: 0;
  font-weight: 700;
}

.compare-vs {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--r-full);
  background: var(--c-dark);
  color: var(--c-white);
  font-weight: 900;
  font-size: var(--fs-base);
  flex-shrink: 0;
  align-self: center;
  box-shadow: var(--sh-md);
}

/* ── Transform diagram ── */
.transform-wrap {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-5);
}

.transform-src {
  flex-shrink: 0;
  width: 200px;
  border-radius: var(--r-lg);
  padding: var(--sp-5);
}

.transform-src-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .7;
  margin-bottom: var(--sp-2);
}

.transform-src-title {
  font-size: var(--fs-lg);
  font-weight: 800;
  word-break: keep-all;
}

.transform-arrow {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  font-size: 2rem;
  color: var(--c-pale);
  align-self: center;
}

.transform-outputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
  flex: 1;
}

.transform-output {
  border-radius: var(--r-md);
  padding: var(--sp-4);
}

.transform-output-num {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .7;
  margin-bottom: var(--sp-1);
}

.transform-output-title {
  font-size: var(--fs-base);
  font-weight: 800;
  word-break: keep-all;
}

.transform-output-desc {
  font-size: var(--fs-sm);
  margin-top: var(--sp-1);
  opacity: .8;
  word-break: keep-all;
}

/* ── Step list ── */
.steps {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.step-row {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
}

.step-num {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: var(--fs-base);
  color: var(--c-white);
  margin-top: 2px;
  box-shadow: 0 2px 8px rgba(0,0,0,.18);
}

.step-body {
  flex: 1;
  padding-top: 4px;
}

.step-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.4;
  word-break: keep-all;
}

.step-desc {
  font-size: var(--fs-sm);
  color: var(--c-mid);
  margin-top: var(--sp-1);
  line-height: 1.55;
  word-break: keep-all;
}

/* ── Compare table (cmp) ── */
.cmp-table {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1.5px solid var(--c-border);
}

.cmp-row {
  display: grid;
  border-bottom: 1px solid var(--c-border);
}

.cmp-row:last-child { border-bottom: none; }

.cmp-cell {
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--fs-base);
  line-height: 1.5;
  word-break: keep-all;
}

.cmp-header { font-weight: 700; font-size: var(--fs-sm); letter-spacing: .05em; }
.cmp-label  { font-weight: 700; background: rgba(0,0,0,.03); }

/* ── Padlet visual ── */
.padlet {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--sp-4);
}

.padlet-col { border-radius: var(--r-lg); overflow: hidden; }

.padlet-col-head {
  padding: var(--sp-3) var(--sp-4);
  color: var(--c-white);
  font-weight: 800;
  font-size: var(--fs-base);
}

.padlet-col-body {
  background: rgba(0,0,0,.04);
  padding: var(--sp-3);
  min-height: 100px;
}

.padlet-note {
  background: var(--c-white);
  border-radius: var(--r-sm);
  padding: var(--sp-3);
  margin-bottom: var(--sp-2);
  font-size: var(--fs-sm);
  box-shadow: var(--sh-sm);
  line-height: 1.45;
  word-break: keep-all;
}

/* ── Workflow diagram ── */
.workflow {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.wf-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) 0;
}

.wf-tool {
  border-radius: var(--r-md);
  padding: var(--sp-2) var(--sp-4);
  font-weight: 700;
  font-size: var(--fs-base);
  min-width: 120px;
  text-align: center;
  color: var(--c-white);
  flex-shrink: 0;
}

.wf-arrow {
  font-size: 1.2rem;
  color: var(--c-pale);
  flex-shrink: 0;
}

.wf-output {
  flex: 1;
  border-radius: var(--r-md);
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--fs-base);
  line-height: 1.5;
  word-break: keep-all;
}

/* ── Practice slide layout ── */
.practice-layout {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.practice-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: center;
}

.practice-meta-badge {
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-full);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ── 3-layer architecture diagram ── */
.three-layer {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.layer-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  align-items: stretch;
  gap: var(--sp-3);
}

.layer-label {
  border-radius: var(--r-md);
  padding: var(--sp-4) var(--sp-4);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.layer-label-title {
  font-size: var(--fs-base);
  font-weight: 800;
  color: var(--c-white);
  word-break: keep-all;
}

.layer-label-sub {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.75);
  margin-top: var(--sp-1);
  word-break: keep-all;
}

.layer-content {
  border-radius: var(--r-md);
  padding: var(--sp-4);
  border: 1.5px solid var(--c-border);
}

.layer-content p {
  font-size: var(--fs-base);
  line-height: 1.6;
  word-break: keep-all;
}

.layer-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--c-pale);
  height: 24px;
  margin: -4px 0;
}