/* Components — cards, lists, scheme, form, accents
   Uses tokens from variables.css. Complements main.css base. */

/* ========== Shared button states (enhance main) ========== */
.header__cta:focus-visible,
.hero__cta:focus-visible,
.scenarios__card-link:focus-visible,
.cta__submit:focus-visible,
.cta__input:focus-visible,
.cta__textarea:focus-visible,
.cta__mail:focus-visible,
.cta__telegram:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

.scenarios__card-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-button);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-nav);
  color: var(--color-text);
  background-image: var(--gradient-button);
  background-size: 160% 160%;
  background-position: 0% 50%;
  box-shadow: var(--shadow-button);
  border: 1px solid rgba(232, 200, 114, 0.28);
  align-self: flex-start;
  overflow: hidden;
  isolation: isolate;
  transition:
    background-position var(--transition-base),
    background-image var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast),
    filter var(--transition-fast),
    border-color var(--transition-base);
}

.scenarios__card-link::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--gradient-button-sheen);
  background-size: 220% 100%;
  background-position: 120% 0;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
  transition:
    background-position var(--transition-sheen),
    opacity var(--transition-base);
}

.scenarios__card-link:hover {
  background-image: var(--gradient-button-hover);
  background-position: 100% 50%;
  box-shadow: var(--shadow-button-hover);
  border-color: rgba(240, 215, 140, 0.45);
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.scenarios__card-link:hover::before {
  opacity: 1;
  background-position: -40% 0;
}

.scenarios__card-link:active {
  transform: translateY(0);
  filter: brightness(0.97);
}

/* ========== Section labels & gold accents ========== */
.section-label {
  display: inline-block;
  margin-bottom: var(--space-4);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
}

/* Soft gold highlight on key lines */
.what-is-cos__not {
  display: inline-block;
  max-width: 40rem;
  margin-bottom: var(--space-10);
  padding: var(--space-4) var(--space-5);
  border-left: 2px solid var(--color-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-gold-muted);
  font-family: var(--font-family-serif);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-snug);
  color: var(--color-text);
  box-shadow: inset 0 0 0 1px rgba(212, 175, 55, 0.12);
}

/* Subtle separators between content blocks */
.divider {
  height: 1px;
  margin-block: var(--space-10);
  border: none;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-border-strong) 20%,
    rgba(212, 175, 55, 0.35) 50%,
    var(--color-border-strong) 80%,
    transparent 100%
  );
}

/* ========== Shared card surface ========== */
.problem__item,
.what-is-cos__point,
.scenarios__card,
.scheme__legend-item,
.how-we-work__step {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base),
    background-color var(--transition-base);
}

.problem__item:hover,
.what-is-cos__point:hover,
.scenarios__card:hover,
.scheme__legend-item:hover,
.how-we-work__step:hover {
  border-color: rgba(212, 175, 55, 0.28);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(212, 175, 55, 0.06);
  background-color: var(--color-bg-surface);
}

/* ========== Problem cards ========== */
.problem__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.problem__item {
  position: relative;
  padding: var(--space-6);
  overflow: hidden;
}

.problem__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-button-soft);
  opacity: 0.85;
}

.problem__item-title {
  margin-bottom: var(--space-3);
  color: var(--color-gold-soft);
  font-size: var(--font-size-md);
}

.problem__item-text {
  max-width: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ========== COS principle cards ========== */
.what-is-cos__points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.what-is-cos__point {
  padding: var(--space-6);
  position: relative;
}

.what-is-cos__point::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(
    ellipse 80% 60% at 0% 0%,
    rgba(31, 77, 58, 0.14) 0%,
    transparent 55%
  );
}

.what-is-cos__point-title {
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-3);
  font-size: var(--font-size-md);
  color: var(--color-text);
}

.what-is-cos__point-text {
  position: relative;
  z-index: 1;
  max-width: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ========== Scheme board — premium operational event ========== */
.scheme__board,
#scheme-canvas {
  position: relative;
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(212, 175, 55, 0.18);
  background:
    radial-gradient(ellipse 55% 45% at 70% 28%, rgba(212, 175, 55, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 50% at 20% 70%, rgba(31, 77, 58, 0.2) 0%, transparent 55%),
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(15, 46, 34, 0.35) 0%, transparent 50%),
    linear-gradient(165deg, #0a0c0b 0%, #050506 45%, #0b100e 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 20px 60px rgba(0, 0, 0, 0.45),
    0 0 80px rgba(212, 175, 55, 0.06);
  overflow: hidden;
  isolation: isolate;
}

.scheme__fx {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.scheme__tags,
.scheme__flow,
.scheme__roles,
.scheme__systems,
.scheme__section-label,
.scheme__stages,
.scheme__history {
  position: relative;
  z-index: 1;
}

.scheme__section-label {
  margin: 0;
  font-size: 0.68rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  opacity: 0.9;
}

/* Accent tags */
.scheme__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
}

.scheme__tag {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(212, 175, 55, 0.28);
  background: rgba(31, 77, 58, 0.22);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.08);
}

/* Top flow: entry → event → core */
.scheme__flow {
  display: grid;
  grid-template-columns: 1fr 1fr minmax(8.5rem, 11rem);
  gap: var(--space-4);
  align-items: stretch;
}

.scheme__node {
  position: relative;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background:
    linear-gradient(155deg, rgba(31, 77, 58, 0.12) 0%, transparent 50%),
    rgba(12, 12, 14, 0.92);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.scheme__node.is-active {
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: 0 0 28px rgba(212, 175, 55, 0.12), var(--shadow-md);
}

.scheme__node-kicker,
.scheme__history-kicker {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 0.68rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.scheme__node-title,
.scheme__history-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0;
  color: var(--color-text);
}

.scheme__node-text {
  margin: 0;
  max-width: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

.scheme__node--event {
  border-color: rgba(212, 175, 55, 0.22);
  background:
    linear-gradient(160deg, rgba(212, 175, 55, 0.1) 0%, transparent 45%),
    rgba(12, 12, 14, 0.95);
}

/* AV Engine core */
.scheme__core {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 9.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(212, 175, 55, 0.25);
  background:
    radial-gradient(circle at 50% 45%, rgba(212, 175, 55, 0.16) 0%, transparent 55%),
    radial-gradient(circle at 50% 50%, rgba(31, 77, 58, 0.35) 0%, transparent 70%),
    rgba(8, 12, 10, 0.95);
  overflow: hidden;
}

.scheme__core-glow {
  position: absolute;
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 215, 140, 0.28) 0%, rgba(45, 107, 79, 0.12) 45%, transparent 70%);
  filter: blur(2px);
  animation: scheme-core-pulse 3.2s ease-in-out infinite;
}

.scheme__core-spark {
  position: absolute;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: rgba(240, 215, 140, 0.95);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.85);
  animation: scheme-spark-orbit 5.5s linear infinite;
}

.scheme__core-spark--a {
  offset-path: path("M 0,-46 A 46,46 0 1,1 0,46 A 46,46 0 1,1 0,-46");
  /* fallback orbit without offset-path support */
  top: 18%;
  right: 22%;
  animation: scheme-spark-twinkle 2.4s ease-in-out infinite;
}

.scheme__core-spark--b {
  bottom: 20%;
  left: 24%;
  animation: scheme-spark-twinkle 2.4s ease-in-out infinite 1.1s;
  width: 0.28rem;
  height: 0.28rem;
}

.scheme__core-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(212, 175, 55, 0.28);
  pointer-events: none;
}

.scheme__core-ring--outer {
  width: 7.6rem;
  height: 7.6rem;
  border-style: dashed;
  border-color: rgba(212, 175, 55, 0.35);
  animation: scheme-core-spin 18s linear infinite;
}

.scheme__core-ring--mid {
  width: 6.1rem;
  height: 6.1rem;
  border-color: rgba(61, 143, 106, 0.4);
  animation: scheme-core-spin-rev 12s linear infinite;
}

.scheme__core-disc {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 5.1rem;
  height: 5.1rem;
  border-radius: 50%;
  border: 1px solid rgba(240, 215, 140, 0.55);
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 244, 210, 0.95) 0%, rgba(212, 175, 55, 0.85) 28%, rgba(45, 107, 79, 0.95) 62%, rgba(10, 28, 20, 1) 100%);
  box-shadow:
    0 0 24px rgba(212, 175, 55, 0.35),
    0 0 48px rgba(45, 107, 79, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  animation: scheme-core-pulse 3.2s ease-in-out infinite;
}

.scheme__core-label {
  font-family: var(--font-family-sans);
  font-size: 0.72rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.02em;
  color: rgba(5, 5, 6, 0.9);
  text-shadow: 0 1px 0 rgba(255, 248, 230, 0.25);
}

.scheme__core-sub {
  margin-top: 0.15rem;
  font-size: 0.55rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(5, 5, 6, 0.65);
}

/* Roles */
.scheme__roles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.scheme__role {
  position: relative;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(10, 12, 11, 0.88);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.scheme__role.is-active {
  border-color: rgba(212, 175, 55, 0.42);
  background: rgba(20, 32, 26, 0.95);
  box-shadow: 0 0 24px rgba(212, 175, 55, 0.1);
}

.scheme__role-dot {
  position: absolute;
  top: 1.15rem;
  left: 0.7rem;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 10px var(--color-gold-glow);
}

.scheme__role-name {
  margin: 0 0 var(--space-2);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0;
  color: var(--color-text);
}

.scheme__role-kind,
.scheme__system-kind {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.62rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(232, 200, 114, 0.55);
}

.scheme__role-view {
  margin: 0;
  max-width: none;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* Systems & external participants */
.scheme__systems {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.scheme__system {
  position: relative;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid rgba(61, 143, 106, 0.22);
  background:
    linear-gradient(160deg, rgba(31, 77, 58, 0.18) 0%, transparent 50%),
    rgba(8, 12, 10, 0.9);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.scheme__system.is-active {
  border-color: rgba(212, 175, 55, 0.4);
  box-shadow: 0 0 22px rgba(61, 143, 106, 0.14), 0 0 18px rgba(212, 175, 55, 0.08);
  background:
    linear-gradient(160deg, rgba(45, 107, 79, 0.28) 0%, transparent 55%),
    rgba(12, 18, 15, 0.95);
}

.scheme__system-icon {
  display: block;
  width: 1.35rem;
  height: 1.35rem;
  margin-bottom: var(--space-3);
  border-radius: 4px;
  border: 1px solid rgba(212, 175, 55, 0.35);
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.35), rgba(31, 77, 58, 0.55));
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.15);
}

.scheme__system-name {
  margin: 0 0 var(--space-2);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0;
  color: var(--color-text);
}

.scheme__system-view {
  margin: 0;
  max-width: none;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* Stages */
.scheme__stages {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.scheme__stage {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(8, 10, 9, 0.75);
  transition:
    border-color var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base);
}

.scheme__stage.is-active {
  border-color: rgba(212, 175, 55, 0.4);
  background: linear-gradient(145deg, rgba(31, 77, 58, 0.35), rgba(12, 12, 14, 0.9));
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.1);
}

.scheme__stage-num {
  font-size: 0.65rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  color: var(--color-gold);
}

.scheme__stage-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-soft);
}

/* History */
.scheme__history {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(212, 175, 55, 0.16);
  background:
    linear-gradient(120deg, rgba(31, 77, 58, 0.14) 0%, transparent 40%),
    rgba(10, 12, 11, 0.92);
}

.scheme__history-head {
  margin-bottom: var(--space-4);
}

.scheme__history-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.scheme__history-item {
  position: relative;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border-left: 2px solid rgba(212, 175, 55, 0.2);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-base);
  transition:
    border-color var(--transition-base),
    color var(--transition-base);
}

.scheme__history-item.is-active {
  border-left-color: var(--color-gold);
  color: var(--color-text-soft);
  text-shadow: 0 0 16px rgba(212, 175, 55, 0.15);
}

/* Legend under board */
.scheme__legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  counter-reset: scheme-step;
}

.scheme__legend-item {
  padding: var(--space-5);
  counter-increment: scheme-step;
}

.scheme__legend-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-gold-soft);
}

.scheme__legend-title::before {
  content: counter(scheme-step, decimal-leading-zero);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  background: var(--gradient-button-soft);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.scheme__legend-text {
  max-width: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

@keyframes scheme-core-pulse {
  0%,
  100% {
    transform: scale(1);
    filter: brightness(1);
  }
  50% {
    transform: scale(1.04);
    filter: brightness(1.08);
  }
}

@keyframes scheme-core-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes scheme-core-spin-rev {
  to {
    transform: rotate(-360deg);
  }
}

@keyframes scheme-spark-twinkle {
  0%,
  100% {
    opacity: 0.35;
    transform: scale(0.85);
  }
  50% {
    opacity: 1;
    transform: scale(1.15);
  }
}

@media (prefers-reduced-motion: reduce) {
  .scheme__core-glow,
  .scheme__core-disc,
  .scheme__core-ring--outer,
  .scheme__core-ring--mid,
  .scheme__core-spark {
    animation: none;
  }
}

@media (max-width: 960px) {
  .scheme__flow {
    grid-template-columns: 1fr 1fr;
  }

  .scheme__core {
    grid-column: 1 / -1;
    min-height: 8.5rem;
  }

  .scheme__roles,
  .scheme__systems,
  .scheme__stages,
  .scheme__history-list,
  .scheme__legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .scheme__board,
  #scheme-canvas {
    padding: var(--space-4);
    gap: var(--space-4);
  }

  .scheme__flow,
  .scheme__roles,
  .scheme__systems,
  .scheme__stages,
  .scheme__history-list,
  .scheme__legend {
    grid-template-columns: 1fr;
  }

  .scheme__tag {
    font-size: 0.62rem;
  }

  .scheme__core {
    min-height: 8rem;
  }
}

/* ========== Scenario cards ========== */
.scenarios__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.scenarios__card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-6);
  min-height: 100%;
  background:
    linear-gradient(160deg, rgba(31, 77, 58, 0.12) 0%, transparent 45%),
    var(--color-bg-elevated);
}

.scenarios__card:hover {
  transform: translateY(-2px);
}

.scenarios__card-title {
  margin-bottom: 0;
  font-size: var(--font-size-xl);
  font-family: var(--font-family-display);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text);
}

.scenarios__card-text {
  max-width: none;
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ========== How we work — steps ========== */
.how-we-work__steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  counter-reset: work-step;
}

.how-we-work__step {
  position: relative;
  padding: var(--space-6) var(--space-6) var(--space-6) var(--space-8);
  counter-increment: work-step;
  list-style: none;
}

.how-we-work__step::before {
  content: counter(work-step);
  position: absolute;
  top: var(--space-5);
  left: var(--space-5);
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  line-height: 1;
  color: rgba(212, 175, 55, 0.18);
  pointer-events: none;
}

.how-we-work__step-title {
  position: relative;
  display: inline-block;
  max-width: 100%;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  padding-left: 0;
  font-size: var(--font-size-md);
  color: var(--color-text);
}

/* Thin premium gold underline under step titles (not beside numbers) */
.how-we-work__step-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2.5rem;
  height: 1px;
  border-radius: 1px;
  background: linear-gradient(
    90deg,
    var(--color-gold) 0%,
    var(--color-gold-soft) 55%,
    rgba(212, 175, 55, 0.15) 100%
  );
  box-shadow: 0 0 10px var(--color-gold-glow);
}

.how-we-work__step-text {
  position: relative;
  max-width: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ========== For whom — list ========== */
.for-whom__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 46rem;
}

.for-whom__item {
  position: relative;
  padding: var(--space-5) var(--space-6) var(--space-5) var(--space-10);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
  line-height: var(--line-height-relaxed);
  transition:
    border-color var(--transition-base),
    background-color var(--transition-base);
}

.for-whom__item::before {
  content: "";
  position: absolute;
  left: var(--space-5);
  top: 50%;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 10px var(--color-gold-glow);
  transform: translateY(-50%);
}

.for-whom__item:hover {
  border-color: rgba(212, 175, 55, 0.28);
  background-color: var(--color-bg-surface);
}

/* ========== CTA form ========== */
.cta__contact {
  max-width: 40rem;
  margin-top: calc(-1 * var(--space-4));
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.cta__mail {
  color: var(--color-gold-soft);
  font-weight: var(--font-weight-medium);
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.cta__mail:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
}

/* Telegram channel + social notes */
.cta__social {
  max-width: 36rem;
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.cta__telegram {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-strong);
  background:
    linear-gradient(135deg, rgba(31, 77, 58, 0.22) 0%, transparent 55%),
    var(--color-bg-elevated);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.cta__telegram:hover {
  border-color: rgba(212, 175, 55, 0.4);
  box-shadow: var(--shadow-md), 0 0 24px rgba(212, 175, 55, 0.12);
  transform: translateY(-1px);
}

.cta__telegram-avatar {
  position: relative;
  flex-shrink: 0;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(232, 200, 114, 0.4);
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.22);
  background:
    linear-gradient(145deg, var(--color-green-mid), var(--color-green-deep) 55%, var(--color-gold-deep));
}

/* Fallback monogram — only when image is missing */
.cta__telegram-avatar::after {
  content: "Б";
  position: absolute;
  inset: 0;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family-serif);
  font-size: var(--font-size-xl);
  color: var(--color-gold-soft);
  text-shadow: 0 0 12px rgba(212, 175, 55, 0.35);
}

.cta__telegram-avatar.has-image {
  background: var(--color-bg-elevated);
}

.cta__telegram-avatar.has-image::after {
  display: none;
  content: none;
}

.cta__telegram-avatar-img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: none;
  border-radius: 50%;
}

.cta__telegram-avatar.has-image .cta__telegram-avatar-img {
  display: block;
}

.cta__telegram-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.cta__telegram-title {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-nav);
}

.cta__telegram-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-base);
}

.cta__x-note {
  margin-top: var(--space-4);
  max-width: none;
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-nav);
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.cta__form {
  position: relative;
  display: grid;
  gap: var(--space-5);
  max-width: 32rem;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background:
    linear-gradient(165deg, rgba(31, 77, 58, 0.12) 0%, transparent 40%),
    var(--color-bg-elevated);
  box-shadow: var(--shadow-md);
}

.cta__status {
  margin: 0;
  max-width: none;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

.cta__status[hidden] {
  display: none;
}

.cta__status--success {
  border: 1px solid rgba(61, 143, 106, 0.45);
  background: rgba(31, 77, 58, 0.28);
  color: var(--color-gold-soft);
}

.cta__status--error {
  border: 1px solid rgba(180, 90, 70, 0.45);
  background: rgba(60, 24, 18, 0.45);
  color: rgba(255, 220, 200, 0.92);
}

.cta__form.is-sending .cta__submit {
  opacity: 0.7;
  pointer-events: none;
}

.cta__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cta__label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-nav);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cta__input,
.cta__textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
  background: var(--color-bg);
  color: var(--color-text);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.cta__input::placeholder,
.cta__textarea::placeholder {
  color: var(--color-text-subtle);
}

.cta__input:hover,
.cta__textarea:hover {
  border-color: rgba(255, 255, 255, 0.22);
}

.cta__input:focus,
.cta__textarea:focus {
  outline: none;
  border-color: rgba(212, 175, 55, 0.55);
  box-shadow: 0 0 0 3px var(--color-gold-glow);
  background-color: var(--color-bg-elevated);
}

.cta__textarea {
  min-height: 8rem;
  resize: vertical;
  line-height: var(--line-height-base);
}

.cta__submit {
  width: 100%;
  margin-top: var(--space-2);
  padding: 0.95rem 1.5rem;
  cursor: pointer;
}

/* ========== Responsive ========== */
@media (max-width: 960px) {
  .problem__list,
  .what-is-cos__points,
  .how-we-work__steps,
  .scenarios__grid {
    grid-template-columns: 1fr;
  }

  .scheme__legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .scheme__legend {
    grid-template-columns: 1fr;
  }

  .problem__item,
  .what-is-cos__point,
  .scenarios__card,
  .how-we-work__step {
    padding: var(--space-5);
  }

  .how-we-work__step {
    padding-left: var(--space-5);
  }

  .how-we-work__step::before {
    font-size: var(--font-size-2xl);
    opacity: 0.9;
  }

  .cta__form {
    padding: var(--space-5);
  }

  .what-is-cos__not {
    font-size: var(--font-size-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  .problem__item,
  .what-is-cos__point,
  .scenarios__card,
  .scheme__legend-item,
  .how-we-work__step,
  .scenarios__card-link {
    transition: none;
  }

  .scenarios__card:hover {
    transform: none;
  }
}