/* === Subject tabs === */
.tabs--subjects {
  margin-top: var(--space-xl);
}

.tabs--subjects .tabs__chooser {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.tabs--subjects .tabs__chooser-copy {
  text-align: center;
  max-width: min(100%, 72rem);
}

.tabs--subjects .tabs__eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(228, 54, 99, 0.18);
  background: rgba(228, 54, 99, 0.1);
  color: var(--primary);
  font-family: var(--font-label);
  font-size: var(--text-label-md);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tabs--subjects .tabs__hint {
  margin-top: var(--space-sm);
  color: var(--on-surface-variant);
  line-height: 1.65;
  white-space: nowrap;
}

.tabs--subjects .tabs__nav {
  width: min(100%, 760px);
  margin-bottom: 0;
  padding: 0.55rem;
  gap: 0.55rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-radius: calc(var(--radius-xl) + 0.25rem);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(18, 18, 18, 0.72));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 24px 50px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.tabs--subjects .tabs__btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  min-height: 6rem;
  padding: 1rem 1.25rem;
  border-radius: calc(var(--radius-lg) + 0.15rem);
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.025);
  color: var(--on-surface);
  text-align: left;
  transform: translateY(0);
  transition:
    transform var(--duration-fast) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    background var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}

.tabs--subjects .tabs__btn:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

.tabs--subjects .tabs__btn:focus-visible {
  outline: none;
  border-color: rgba(252, 132, 183, 0.4);
  box-shadow: 0 0 0 4px rgba(228, 54, 99, 0.12);
}

.tabs--subjects .tabs__btn--active {
  background: linear-gradient(135deg, rgba(228, 54, 99, 0.2), rgba(228, 54, 99, 0.08) 58%, rgba(255, 255, 255, 0.04));
  border-color: rgba(228, 54, 99, 0.3);
  box-shadow:
    0 14px 30px rgba(228, 54, 99, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.tabs--subjects .tabs__btn-avatar {
  flex-shrink: 0;
  position: relative;
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  padding: 0.16rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 10px 24px rgba(0, 0, 0, 0.24);
  transition:
    transform var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}

.tabs--subjects .tabs__btn-avatar-image {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: block;
  object-fit: cover;
  object-position: center top;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: rgba(255, 255, 255, 0.03);
  transition:
    border-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}

.tabs--subjects .tabs__btn-avatar--math {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.72), rgba(29, 78, 216, 0.88));
}

.tabs--subjects .tabs__btn-avatar--russian {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.72), rgba(234, 88, 12, 0.84));
}

.tabs--subjects .tabs__btn-avatar-status {
  position: absolute;
  right: 0.16rem;
  bottom: 0.22rem;
  width: 0.78rem;
  height: 0.78rem;
  border-radius: 50%;
  background: #22c55e;
  border: 2px solid rgba(12, 12, 12, 0.92);
  box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.14);
}

.tabs--subjects .tabs__btn--active .tabs__btn-avatar {
  transform: translateY(-1px) scale(1.03);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 14px 30px rgba(228, 54, 99, 0.18);
}

.tabs--subjects .tabs__btn--active .tabs__btn-avatar-image {
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: 0 0 0 1px rgba(228, 54, 99, 0.24);
}

.tabs--subjects .tabs__btn-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.tabs--subjects .tabs__btn-title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--on-surface-bright);
}

.tabs--subjects .tabs__btn-meta {
  margin-top: 0.25rem;
  font-family: var(--font-label);
  font-size: var(--text-label-md);
  font-weight: 700;
  color: var(--on-surface-variant);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tabs--subjects .tabs__btn--active .tabs__btn-meta {
  color: rgba(252, 132, 183, 0.92);
}

/* === Program section — Mission Grid === */
.program__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

/* Card */
.program__card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, rgba(42, 41, 41, 0.55), rgba(18, 18, 18, 0.7));
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: border-color var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}

.program__card:hover {
  border-color: rgba(228, 54, 99, 0.2);
  transform: translateY(-3px);
}

/* Accent cards (first & last) */
.program__card--accent {
  background: linear-gradient(160deg, rgba(228, 54, 99, 0.12), rgba(18, 18, 18, 0.7));
  border-color: rgba(228, 54, 99, 0.15);
}

/* Top row: phase + date */
.program__card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Background icon */
.program__card-icon {
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 100px;
  height: 100px;
  opacity: 0.08;
  color: white;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.program__card-icon svg {
  width: 100%;
  height: 100%;
}

.program__card:hover .program__card-icon {
  opacity: 0.12;
}

.program__card--accent .program__card-icon {
  color: var(--primary);
  opacity: 0.12;
}

.program__card--accent:hover .program__card-icon {
  opacity: 0.18;
}

.program__card-phase {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--on-surface-variant);
  letter-spacing: -0.02em;
  opacity: 0.3;
  line-height: 1;
}

.program__card-date {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -0.02em;
}

/* Title */
.program__card-title {
  font-family: var(--font-display);
  font-size: var(--text-headline-md);
  font-weight: 700;
  color: var(--on-surface-bright);
  line-height: 1.2;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

/* Items list */
.program__card-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: var(--space-md);
  max-width: calc(100% - 80px);
  position: relative;
  z-index: 1;
  padding-bottom: var(--space-lg);
}

.program__card-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  color: var(--on-surface);
  font-size: var(--text-body-md);
  line-height: 1.5;
}

.program__card-list li::before {
  content: '';
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 0.5em;
  opacity: 0.6;
}

/* Pi icon fix — mirror horizontally */
.program__card:nth-child(11) .program__card-icon {
  transform: scaleX(-1);
}

@media (min-width: 1024px) {
  /* Center the last card only for the 3-column desktop grid. */
  .program__card:last-child:nth-child(3n + 1) {
    grid-column: 2;
  }
}

/* === Responsive === */
@media (max-width: 1023px) {
  .tabs--subjects .tabs__chooser-copy {
    max-width: 44rem;
  }

  .tabs--subjects .tabs__hint {
    white-space: normal;
  }

  .tabs--subjects .tabs__nav {
    width: min(100%, 640px);
  }

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

@media (max-width: 640px) {
  .tabs--subjects .tabs__chooser {
    gap: var(--space-md);
  }

  .tabs--subjects .tabs__nav {
    grid-template-columns: 1fr;
    width: min(100%, 420px);
  }

  .tabs--subjects .tabs__btn {
    min-height: 4.85rem;
    padding: 0.95rem 1rem;
  }

  .tabs--subjects .tabs__btn-avatar {
    width: 3.15rem;
    height: 3.15rem;
  }

  .program__grid {
    grid-template-columns: 1fr;
  }
}