/* ========================================================================
   GEO SOLUTIONS — HOMEPAGE
   Page-specific styles for index.html
   Loaded after layout.css.
   ======================================================================== */

/* ===== HERO ===== */

.hero {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
  position: relative;
}

@media (max-width: 767px) {
  .hero {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

.hero__title {
  font-size: clamp(2.5rem, 7vw, 5.25rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  max-width: 14ch;
  margin-bottom: var(--space-8);
}

.hero__title .accent {
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
  max-width: 56ch;
  margin-bottom: var(--space-12);
}

.hero__cta-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-24);
}

@media (max-width: 767px) {
  .hero__cta-row {
    margin-bottom: var(--space-16);
  }
}

/* Hero anchor stat (30-50%) */
.hero__anchor {
  margin-top: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: end;
}

@media (min-width: 768px) {
  .hero__anchor {
    grid-template-columns: auto 1fr;
    gap: var(--space-16);
  }
}

.anchor-metric__value {
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: var(--weight-medium);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
}

.anchor-metric__value .unit {
  font-size: 0.5em;
  color: var(--color-text-secondary);
  margin-left: 4px;
}

.anchor-metric__label {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  margin-top: var(--space-3);
}

.anchor-explanation {
  font-size: var(--text-body-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 48ch;
}

/* ===== HERO COMPARISON ROW (Fragmented vs Unified cards) ===== */

.hero__comparison {
  margin-top: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .hero__comparison {
    grid-template-columns: 1fr 1fr;
  }
}

.compare-card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
}

.compare-card--unified {
  border-color: rgba(255, 0, 200, 0.25);
}

.compare-card__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.compare-card--unified .compare-card__eyebrow {
  color: var(--color-accent);
}

.compare-card__title {
  font-size: var(--text-h4);
  line-height: var(--leading-snug);
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
  margin: 0;
}

.compare-card__functions {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.compare-card__functions li {
  font-size: var(--text-body-sm);
  line-height: 1.5;
  color: var(--color-text-secondary);
  padding-left: 18px;
  position: relative;
}

.compare-card__functions li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--color-text-tertiary);
}

.compare-card--unified .compare-card__functions li::before {
  background: var(--color-accent);
}

/* ===== HERO STAT GRID (Data Wall — 6 stat blocks) ===== */

.hero__stat-grid {
  margin-top: var(--space-12);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--color-border-subtle);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero__stat-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.stat-block {
  background: var(--color-bg-base);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 140px;
  justify-content: center;
}

@media (min-width: 768px) {
  .stat-block {
    padding: var(--space-12) var(--space-8);
  }
}

.stat-block--unified {
  background: var(--color-bg-base);
}

.stat-block__value {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  font-weight: var(--weight-medium);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
}

.stat-block--unified .stat-block__value {
  color: var(--color-accent);
}

.stat-block__value--formula {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.stat-block__label {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
}

/* ===== PROBLEM SECTION ===== */

.problem {
  border-top: 1px solid var(--color-border-subtle);
}

.problem__grid {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .problem__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-24);
  }
}

.problem__visual {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Closed-loop architecture diagram */
.loop-diagram {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  padding: var(--space-4) var(--space-12) var(--space-4) var(--space-4);
}

.loop-layer {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  transition: border-color var(--duration-fast) var(--ease-default);
}

.loop-layer__code {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
  text-transform: uppercase;
}

.loop-layer__name {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  font-weight: var(--weight-regular);
}

.loop-arrow {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 1rem;
  line-height: 1;
  margin: 2px 0;
}

.loop-feedback {
  position: absolute;
  right: 0;
  top: var(--space-12);
  bottom: var(--space-12);
  width: var(--space-8);
}

.loop-feedback::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 12px;
  width: 1px;
  background: var(--color-accent);
  opacity: 0.35;
}

.loop-feedback::after {
  content: "↑";
  position: absolute;
  top: -2px;
  right: 8px;
  color: var(--color-accent);
  font-size: var(--text-body-sm);
  line-height: 1;
}

.loop-diagram-caption {
  margin: var(--space-6) auto 0;
  max-width: 360px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.loop-diagram-caption::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1px;
  background: var(--color-accent);
  opacity: 0.5;
}

/* ===== LAYERS SECTION ===== */

.layers {
  border-top: 1px solid var(--color-border-subtle);
}

.layer-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
  margin-top: var(--space-16);
}

@media (min-width: 768px) {
  .layer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.layer-card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--duration-base) var(--ease-default);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.layer-card__code {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
  text-transform: uppercase;
}

.layer-card__title {
  font-size: 1.625rem;
  line-height: 1.1;
}

.layer-card__desc {
  font-size: var(--text-body-sm);
  line-height: 1.55;
  color: var(--color-text-secondary);
}

.layer-card__systems {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

.layer-card__systems span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.layer-card__link {
  margin-top: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-body-sm);
  color: var(--color-text-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 4px;
  transition: text-decoration-color var(--duration-fast) var(--ease-default);
  align-self: flex-start;
}

.layer-card__link:hover {
  text-decoration-color: var(--color-accent);
}

/* ===== ENGAGEMENT MODES ===== */

.modes {
  border-top: 1px solid var(--color-border-subtle);
}

.mode-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-16);
}

@media (min-width: 768px) {
  .mode-row {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.mode {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
}

.mode__num {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.mode__name {
  font-size: var(--text-h4);
  margin-bottom: var(--space-3);
}

.mode__duration {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.mode__desc {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* ===== PROOF STRIP ===== */

.proof {
  border-top: 1px solid var(--color-border-subtle);
}

.proof__head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

.proof__cases {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .proof__cases {
    grid-template-columns: repeat(2, 1fr);
  }
}

.case {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--duration-base) var(--ease-default);
}

.case:hover {
  border-color: var(--color-border-strong);
}

.case__metric {
  font-size: clamp(2.25rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.025em;
}

.case__metric .unit {
  color: var(--color-text-secondary);
  font-size: 0.55em;
  margin-left: 4px;
}

.case__title {
  font-size: var(--text-body-lg);
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-top: var(--space-2);
}

.case__client {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  color: var(--color-text-tertiary);
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

/* ===== WHY PILLARS ===== */

.why {
  border-top: 1px solid var(--color-border-subtle);
}

.why__pillars {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
  margin-top: var(--space-16);
}

@media (min-width: 768px) {
  .why__pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pillar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pillar__num {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
  text-transform: uppercase;
}

.pillar__title {
  font-size: var(--text-h4);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.pillar__desc {
  font-size: var(--text-body-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* ===== FINAL CTA ===== */

.final-cta {
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-32) 0;
  text-align: center;
}

@media (max-width: 767px) {
  .final-cta {
    padding: var(--space-16) 0;
  }
}

.final-cta__title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  letter-spacing: -0.025em;
  line-height: 1.05;
  max-width: 22ch;
  margin: 0 auto var(--space-6);
}

.final-cta__desc {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  max-width: 56ch;
  margin: 0 auto var(--space-12);
  line-height: 1.55;
}

.final-cta__row {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}