/* ==========================================================================
   Grok Imagine 1.5 & Grok Image — Dual-Engine Horizontal Diptych
   Design: Top Platinum Silver Tier (Grok Imagine 1.5 Video) +
           Bottom Carbon Obsidian Tier (Grok Image Photo) +
           Central Electric Orange Seam CTA (/grok-imagine)
   Palette: Platinum Silver (#E5E7EB), Pure White (#FFFFFF),
            Carbon Obsidian (#0D1321), Electric Orange (#FF5500)
   ========================================================================== */

:root {
  --gi-silver: #E5E7EB;
  --gi-silver-light: #F3F4F6;
  --gi-white: #FFFFFF;
  --gi-carbon: #0D1321;
  --gi-carbon-card: #151E32;
  --gi-orange: #FF5500;
  --gi-orange-hover: #FF6A1F;
  --gi-ink: #0A0E17;
  --gi-muted-dark: #374151;
  --gi-muted-light: #9CA3AF;
  --gi-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --gi-font-mono: 'IBM Plex Mono', monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--gi-silver);
  color: var(--gi-ink);
  font-family: var(--gi-font-sans);
}

body.gi-diptych-body {
  margin: 0;
  background-color: var(--gi-silver);
  color: var(--gi-ink);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
}

.gi-container {
  width: min(1200px, calc(100% - 2.5rem));
  margin-inline: auto;
}

/* Header */
.gi-header {
  background: var(--gi-silver);
  border-bottom: 2px solid var(--gi-ink);
  position: sticky;
  top: 0;
  z-index: 50;
}

.gi-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  flex-wrap: wrap;
}

.gi-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--gi-ink);
  font-weight: 900;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.gi-brand__tag {
  background: var(--gi-orange);
  color: #FFFFFF;
  font-family: var(--gi-font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.gi-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  flex-wrap: wrap;
}

.gi-nav a {
  color: var(--gi-ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
}

.gi-nav a:hover {
  color: var(--gi-orange);
}

.gi-header__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.gi-lang-select {
  appearance: none;
  background: var(--gi-white);
  color: var(--gi-ink);
  border: 2px solid var(--gi-ink);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-family: var(--gi-font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  cursor: pointer;
}

.gi-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--gi-orange);
  color: #FFFFFF;
  border: 2px solid var(--gi-orange);
  border-radius: 999px;
  padding: 1.05rem 2.2rem;
  font-weight: 800;
  font-size: 0.96rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 10px 26px rgba(255, 85, 0, 0.32);
}

.gi-btn:hover {
  background: var(--gi-orange-hover);
  transform: translateY(-2px);
}

.gi-btn--sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.8rem;
  box-shadow: none;
}

.gi-btn--outline-dark {
  background: transparent;
  color: var(--gi-ink);
  border-color: var(--gi-ink);
  box-shadow: none;
}

.gi-btn--outline-light {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: none;
}

/* ==========================================================================
   HERO: DUAL-ENGINE HORIZONTAL DIPTYCH (SILVER TOP / CARBON BOTTOM)
   ========================================================================== */

.gi-diptych {
  position: relative;
}

/* TOP HALF: PLATINUM SILVER — GROK IMAGINE 1.5 VIDEO */
.gi-tier-top {
  background: var(--gi-silver);
  color: var(--gi-ink);
  padding: clamp(2.5rem, 5vw, 4.25rem) 0 clamp(3.25rem, 6vw, 5rem);
}

.gi-tier-top__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--gi-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gi-muted-dark);
  margin-bottom: 0.85rem;
}

.gi-tier-top__title {
  font-size: clamp(2.4rem, 5.4vw, 4.7rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
  color: var(--gi-ink);
  text-transform: uppercase;
}

.gi-tier-top__specs {
  font-size: clamp(1.05rem, 1.5vw, 1.32rem);
  font-weight: 700;
  color: var(--gi-ink);
  margin: 0 0 0.75rem;
}

.gi-tier-top__lead {
  font-size: 1.02rem;
  color: var(--gi-muted-dark);
  max-width: 860px;
  margin: 0 0 1.4rem;
}

.gi-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.gi-pill {
  background: var(--gi-white);
  color: var(--gi-ink);
  border: 1.5px solid var(--gi-ink);
  border-radius: 999px;
  padding: 0.38rem 0.9rem;
  font-family: var(--gi-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
}

/* CENTRAL SEAM ORANGE PILL BUTTON BRIDGING TOP & BOTTOM */
.gi-seam-bridge {
  position: relative;
  z-index: 10;
  height: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.gi-seam-btn {
  transform: translateY(-50%);
  background: var(--gi-orange);
  color: #FFFFFF;
  border: 3px solid var(--gi-white);
  border-radius: 999px;
  padding: 1.15rem 2.75rem;
  font-weight: 900;
  font-size: clamp(0.92rem, 1.4vw, 1.12rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
  transition: background 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.gi-seam-btn:hover {
  background: var(--gi-orange-hover);
  transform: translateY(calc(-50% - 2px)) scale(1.02);
}

/* BOTTOM HALF: CARBON OBSIDIAN — GROK IMAGE PHOTO (6 ₽ / 3 ₽ PREMIUM) */
.gi-tier-bottom {
  background: var(--gi-carbon);
  color: var(--gi-white);
  padding: clamp(3.5rem, 6vw, 5.25rem) 0 clamp(2.75rem, 5vw, 4.25rem);
  border-top: 2px solid var(--gi-ink);
}

.gi-tier-bottom__kicker {
  font-family: var(--gi-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gi-orange);
  margin-bottom: 0.75rem;
}

.gi-tier-bottom__title {
  font-size: clamp(2.1rem, 4.7vw, 4.1rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 0 0 1rem;
  text-transform: uppercase;
}

.gi-tier-bottom__title em {
  font-style: normal;
  color: var(--gi-orange);
}

.gi-tier-bottom__specs {
  font-size: clamp(1rem, 1.4vw, 1.22rem);
  font-weight: 600;
  color: #E5E7EB;
  margin: 0 0 1.5rem;
}

/* Interactive Mode Switcher inside Carbon Tier */
.gi-inspector {
  background: var(--gi-carbon-card);
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  border-radius: 14px;
  padding: 1.35rem 1.5rem;
  margin-top: 1.25rem;
}

.gi-inspector__tabs {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.gi-mode-tab {
  background: rgba(255, 255, 255, 0.06);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 0.52rem 1rem;
  font-family: var(--gi-font-sans);
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
}

.gi-mode-tab.is-active {
  background: var(--gi-orange);
  border-color: var(--gi-orange);
  color: #FFFFFF;
}

.gi-inspector__box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.gi-inspector__meta {
  font-family: var(--gi-font-mono);
  font-size: 0.76rem;
  color: var(--gi-orange);
  margin-bottom: 0.3rem;
}

.gi-inspector__prompt {
  margin: 0;
  font-size: 0.95rem;
  color: #F3F4F6;
}

.gi-copy-btn {
  background: transparent;
  color: var(--gi-orange);
  border: 1.5px solid var(--gi-orange);
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
  font-family: var(--gi-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

/* SECTIONS */
.gi-section {
  padding: 3.75rem 0;
  border-top: 2px solid var(--gi-ink);
}

.gi-section--light {
  background: var(--gi-silver-light);
  color: var(--gi-ink);
}

.gi-section--dark {
  background: var(--gi-carbon);
  color: var(--gi-white);
}

.gi-section__head {
  max-width: 820px;
  margin-bottom: 2.25rem;
}

.gi-section__index {
  display: inline-block;
  background: var(--gi-orange);
  color: #FFFFFF;
  font-family: var(--gi-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

.gi-section__title {
  font-size: clamp(1.8rem, 3.3vw, 2.7rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 0.75rem;
}

.gi-section__lead {
  font-size: 1.04rem;
  opacity: 0.85;
  margin: 0;
}

/* 3 Benefits Grid */
.gi-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.gi-card {
  background: var(--gi-white);
  color: var(--gi-ink);
  border: 2px solid var(--gi-ink);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
}

.gi-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--gi-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  border-bottom: 1.5px solid var(--gi-silver);
  padding-bottom: 0.6rem;
  margin-bottom: 0.85rem;
}

.gi-card__badge {
  color: var(--gi-orange);
}

.gi-card__title {
  font-size: 1.28rem;
  font-weight: 900;
  margin: 0 0 0.6rem;
}

.gi-card__desc {
  margin: 0;
  font-size: 0.96rem;
  color: var(--gi-muted-dark);
}

.gi-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1.5px solid var(--gi-silver);
  padding-top: 0.85rem;
  font-family: var(--gi-font-mono);
  font-size: 0.8rem;
  font-weight: 700;
}

.gi-card__link {
  color: var(--gi-orange);
  text-decoration: none;
  font-weight: 800;
}

/* Interactive Grok Imagine 1.5 & Grok Image Calculator */
.gi-calc {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 1.75rem;
  background: var(--gi-carbon-card);
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  padding: 2rem;
}

.gi-calc__group + .gi-calc__group {
  margin-top: 1.35rem;
}

.gi-calc__label {
  display: block;
  font-family: var(--gi-font-mono);
  font-size: 0.78rem;
  color: var(--gi-orange);
  margin-bottom: 0.55rem;
}

.gi-calc__switch {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
  gap: 0.6rem;
}

.gi-calc-btn {
  text-align: left;
  background: rgba(255, 255, 255, 0.05);
  color: #FFFFFF;
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.gi-calc-btn strong {
  font-size: 0.92rem;
  font-weight: 800;
}

.gi-calc-btn small {
  font-size: 0.75rem;
  color: var(--gi-muted-light);
}

.gi-calc-btn.is-active {
  background: var(--gi-orange);
  border-color: var(--gi-orange);
  color: #FFFFFF;
}

.gi-calc-btn.is-active small {
  color: #FFFFFF;
}

.gi-calc__readout {
  background: var(--gi-carbon);
  border: 2px solid var(--gi-orange);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 0.65rem;
}

.gi-calc__caption {
  font-family: var(--gi-font-mono);
  font-size: 0.78rem;
  color: var(--gi-orange);
}

.gi-calc__price {
  font-size: clamp(2.5rem, 4.6vw, 3.75rem);
  font-weight: 900;
  line-height: 1;
  color: #FFFFFF;
}

.gi-calc__sub {
  font-size: 0.92rem;
  color: var(--gi-muted-light);
}

.gi-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.gi-step-card {
  background: var(--gi-carbon-card);
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  padding: 1.25rem;
}

.gi-step-card__num {
  display: inline-block;
  color: var(--gi-orange);
  font-family: var(--gi-font-mono);
  font-weight: 700;
  font-size: 0.76rem;
  margin-bottom: 0.45rem;
}

.gi-step-card p {
  margin: 0;
  font-size: 0.94rem;
  color: #F3F4F6;
}

/* Comparison Table */
.gi-table-wrap {
  overflow-x: auto;
  border: 2px solid var(--gi-ink);
  border-radius: 14px;
  background: var(--gi-white);
}

.gi-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}

.gi-table th,
.gi-table td {
  padding: 1rem 1.15rem;
  border-bottom: 1.5px solid var(--gi-silver);
  text-align: left;
  font-size: 0.94rem;
  color: var(--gi-ink);
}

.gi-table thead th {
  background: var(--gi-carbon);
  color: #FFFFFF;
  font-family: var(--gi-font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.gi-table thead th.is-highlighted {
  background: var(--gi-orange);
  color: #FFFFFF;
}

.gi-table tbody td.is-highlighted {
  background: #FFF7ED;
  font-weight: 800;
}

.gi-crosslinks {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.gi-crosslinks__label {
  font-weight: 800;
  font-size: 0.92rem;
}

.gi-crosslinks__list {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.gi-crosslinks__item {
  background: var(--gi-white);
  color: var(--gi-ink);
  border: 1.5px solid var(--gi-ink);
  border-radius: 999px;
  padding: 0.38rem 0.9rem;
  font-weight: 700;
  font-size: 0.84rem;
  text-decoration: none;
}

.gi-crosslinks__item:hover {
  border-color: var(--gi-orange);
  color: var(--gi-orange);
}

/* FAQ */
.gi-faq-list {
  display: grid;
  gap: 0.85rem;
}

.gi-faq-item {
  background: var(--gi-carbon-card);
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
}

.gi-faq-item__q {
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 1.35rem;
  font-weight: 800;
  font-size: 1.04rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: #FFFFFF;
}

.gi-faq-item__q::-webkit-details-marker {
  display: none;
}

.gi-faq-item__idx {
  color: var(--gi-orange);
  font-family: var(--gi-font-mono);
  font-size: 0.78rem;
}

.gi-faq-item__a {
  padding: 0 1.35rem 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #D1D5DB;
}

.gi-faq-item__a p {
  margin: 0.9rem 0 0;
}

/* Final CTA */
.gi-final {
  padding: 3.5rem 0 4rem;
  background: var(--gi-silver);
  border-top: 2px solid var(--gi-ink);
}

.gi-final__box {
  background: var(--gi-carbon);
  color: #FFFFFF;
  border: 2px solid var(--gi-ink);
  border-radius: 18px;
  padding: clamp(1.85rem, 4vw, 3rem);
  text-align: center;
}

.gi-final__meta {
  font-family: var(--gi-font-mono);
  font-size: 0.8rem;
  color: var(--gi-orange);
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.gi-final__title {
  font-size: clamp(1.8rem, 3.4vw, 2.75rem);
  font-weight: 900;
  margin: 0 0 0.75rem;
}

.gi-final__lead {
  max-width: 720px;
  margin: 0 auto 1.5rem;
  color: #D1D5DB;
}

.gi-final__actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Footer */
.gi-footer {
  background: var(--gi-carbon);
  color: #9CA3AF;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1.75rem 0;
}

.gi-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.gi-footer__nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.gi-footer__nav a {
  color: var(--gi-orange);
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 860px) {
  .gi-calc {
    grid-template-columns: 1fr;
  }
  .gi-seam-btn {
    padding: 0.9rem 1.4rem;
    font-size: 0.82rem;
  }
}