/* ============================================================
   layout.css — Container, grid utilities, section structure
   ============================================================ */

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* --- Section padding --- */
.section {
  padding-top: var(--section-padding);
  padding-bottom: var(--section-padding);
}

.section--interstitial {
  padding-top: var(--interstitial-padding);
  padding-bottom: var(--interstitial-padding);
}

/* --- Section backgrounds --- */
.section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section--dark-gradient {
  background: var(--bg-dark-gradient);
  color: var(--text-on-dark);
}

.section--light {
  background: var(--bg-light);
  color: var(--text-primary);
}

.section--light-alt {
  background: var(--bg-light-alt);
  color: var(--text-primary);
}

.section--accent {
  background: var(--accent);
  color: #fff;
}

/* --- Grid: 2 columns --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--card-gap);
}

/* --- Grid: 3 columns --- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
}

/* --- Grid: 2x3 (6 cards) --- */
.grid-2x3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: var(--card-gap);
}

/* --- Grid: 5 columns (industries) --- */
.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--card-gap);
}

/* --- Split layout: 60/40 --- */
.split-60-40 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

/* --- Split layout: case studies alternating --- */
.case-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.case-layout--reversed {
  direction: rtl;
}

.case-layout--reversed > * {
  direction: ltr;
}

/* --- Insights grid: featured + stacked + 3 below --- */
.insights-grid-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--card-gap);
}

.insights-grid-top-right {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: var(--card-gap);
}

.insights-grid-mid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
  margin-top: var(--card-gap);
}

.insights-grid-bottom {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--card-gap);
  margin-top: var(--card-gap);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Footer columns --- */
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--card-gap);
}

/* --- Metrics strip (horizontal with dividers) --- */
.metrics-strip {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
}

.metrics-strip__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 40px;
  text-align: center;
}

.metrics-strip__item:not(:last-child) {
  border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.metrics-strip__value {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--hero-metric-number);
  color: #fff;
  line-height: 1.2;
}

.metrics-strip__label {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--hero-metric-label);
  color: var(--text-on-dark-muted);
  margin-top: 4px;
}

/* --- Aggregate stats strip (dark bg) --- */
.stats-strip {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 64px;
  margin-top: 80px;
  border-top: 1px solid var(--border-dark);
}

.stats-strip__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 40px;
  text-align: center;
}

.stats-strip__item:not(:last-child) {
  border-right: 1px solid var(--border-dark);
}

.stats-strip__value {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--hero-metric-number);
  color: #fff;
  line-height: 1.2;
}

.stats-strip__label {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--hero-metric-label);
  color: var(--text-on-dark-muted);
  margin-top: 4px;
}

/* --- About section split --- */
.about-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 80px;
  align-items: start;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.about-stat__value {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 28px;
  color: #fff;
  line-height: 1.2;
}

.about-stat__label {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--small-size);
  color: var(--text-on-dark-muted);
  margin-top: 4px;
}

/* --- Centered text layout --- */
.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* --- Max width constraints --- */
.max-w-700 {
  max-width: 700px;
}

.max-w-640 {
  max-width: 640px;
}

.max-w-560 {
  max-width: 560px;
}

.max-w-720 {
  max-width: 720px;
}

/* --- Section header spacing --- */
.section-header {
  margin-bottom: 56px;
}

.section-header--center {
  text-align: center;
  margin-bottom: 56px;
}

/* --- Hero layout --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero__main {
  flex: 1;
  display: flex;
  align-items: center;
}

.hero__split {
  display: grid;
  grid-template-columns: 55% 1fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}

.hero__content {
  max-width: 640px;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.hero__bottom {
  padding-bottom: 32px;
}

.hero__trending {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px 0;
}

.hero__metrics {
  padding: 24px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- Process strip layout --- */
.process-strip {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
  margin-top: 48px;
}

.process-strip__line {
  position: absolute;
  top: 18px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  z-index: 0;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: 220px;
}

.process-step__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  margin-bottom: 20px;
  flex-shrink: 0;
}

.process-step__number {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--process-number-size);
  color: var(--accent);
  line-height: 1;
}

.process-step__title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  color: #fff;
  margin-top: 8px;
}

.process-step__desc {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--small-size);
  color: var(--text-on-dark-muted);
  margin-top: 8px;
  line-height: 1.5;
}

/* --- Case study individual layout --- */
.case-study {
  padding: 64px 0;
}

.case-study:not(:last-child) {
  border-bottom: 1px solid var(--border-dark);
}

.case-metric__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--stat-case-size);
  color: var(--accent);
  line-height: 1;
}

.case-metric__subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--hero-subtitle-size);
  color: var(--text-on-dark-muted);
  margin-top: 8px;
}

.case-body__client {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--small-size);
  color: var(--text-on-dark-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.case-body__narrative {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--card-desc-size);
  color: var(--text-on-dark-muted);
  line-height: var(--card-desc-line-height);
}

.case-body__link {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--small-size);
  color: var(--accent);
  transition: color var(--transition-fast);
}

.case-body__link:hover {
  color: var(--accent-hover);
  transform: translateX(4px);
}

/* --- Highlight stat interstitial --- */
.highlight-stat__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--stat-big-size);
  color: var(--accent);
  line-height: 1;
}

.highlight-stat__subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--hero-subtitle-size);
  color: var(--text-secondary);
  margin-top: 12px;
}

.highlight-stat__supporting {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--card-desc-size);
  color: var(--text-muted);
  margin-top: 8px;
}