/* ============================================================
   Tektome — Customer-Facing Solutions section (#solutions).
   A 2×2 grid of solution cards on a light canvas. Each card has a
   tinted header band (eyebrow + title + mono spec line), a white
   body with intro copy and a hairline-separated feature list with
   purple arrow bullets, and a primary CTA. The 4th card is the
   tinted "more solutions" card with pills and an outline CTA.
   Loaded after how.css. Tokens from colors_and_type.css.
   ============================================================ */

.solutions-section {
  background: var(--gray-200);
  padding: 96px 0;
  font-family: var(--font-sans);
  color: var(--fg-primary);
}
.solutions-section .container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 40px;
}
.solutions-section .section-header { margin: 0 auto 40px; }

/* ---- Grid ---- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  align-items: stretch;
}

/* ---- Card shell ---- */
.solution-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

/* ---- Header band ---- */
.solution-header {
  position: relative;
  background: #F8F8FD;
  border-bottom: 1px solid var(--border-subtle);
  padding: 22px 26px 18px;
}
/* A single Arch Purple light that travels left→right along the divider
   line, flowing through the four cards in sequence (1 → 2 → 3 → 4) as one
   continuous sweep. Each card's underline shares one timeline and is
   offset by a quarter cycle, so only one card glows at any instant. */
.solution-header::after,
.solution-card-more .solution-more-top::after {
  content: none;
}
@keyframes sol-underline-flow {
  0%     { background-position: 100% 0; opacity: 1; }
  25%    { background-position: 0% 0;   opacity: 1; }
  25.01% { background-position: 0% 0;   opacity: 0; }
  100%   { background-position: 0% 0;   opacity: 0; }
}
.solution-type {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-weight: var(--fw-semibold);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-arch-purple);
  margin-bottom: 11px;
}
.solution-type::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--color-arch-purple);
  border-radius: 2px;
}
.solution-header h3 {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-data-black);
  margin: 0 0 9px;
}
.solution-header h3 .color-blue { color: var(--color-arch-purple); }
.solution-subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.01em;
  color: var(--fg-tertiary);
}

/* ---- Body ---- */
.solution-body {
  padding: 20px 26px 4px;
}
.solution-body > p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-secondary);
  margin: 0 0 16px;
  text-wrap: pretty;
}
.solution-features {
  list-style: none;
  margin: 0;
  padding: 0;
}
.solution-features li {
  position: relative;
  padding: 11px 0 11px 30px;
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  line-height: 1.45;
  color: var(--fg-primary);
  text-wrap: pretty;
}
.solution-features li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--color-arch-purple);
  font-size: 14px;
  font-weight: var(--fw-semibold);
}

/* ---- CTA ---- */
.solution-cta {
  margin-top: auto;
  padding: 18px 26px 26px;
}
.solution-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--radius-md);
  background: var(--color-arch-purple);
  color: var(--color-draft-white);
  border: 1px solid var(--color-arch-purple);
  font-size: 14px;
  font-weight: var(--fw-semibold);
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}
.solution-cta-btn svg { display: block; }
.solution-cta-btn svg path { transition: transform var(--duration-fast) var(--ease-out); }
.solution-cta-btn:hover {
  background: var(--purple-700);
  border-color: var(--purple-700);
  color: var(--color-draft-white);
  box-shadow: 0 8px 20px rgba(81, 86, 219, 0.22);
}
.solution-cta-btn:active { background: var(--purple-800); border-color: var(--purple-800); }
.solution-cta-btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* outline variant (used on the "more" card) */
.solution-cta-btn-outline {
  background: var(--bg-surface);
  color: var(--color-arch-purple);
  border-color: var(--color-arch-purple);
}
.solution-cta-btn-outline:hover {
  background: var(--purple-50);
  color: var(--purple-700);
  border-color: var(--purple-700);
  box-shadow: none;
}
.solution-cta-btn-outline:active { background: var(--purple-100); color: var(--purple-800); }

/* ============================================================
   "More solutions" card
   ============================================================ */
.solution-card-more {
  background: #F8F8FD;
  border: 1px solid var(--purple-100);
}

/* Wide variant: sits alongside the 3rd solution card (KnowledgeBuilder)
   in row 2, right column. */
.solution-card-wide {
  grid-column: 2;
  grid-row: 2;
  flex-direction: column;
  align-items: stretch;
}
.solution-card-wide .solution-more-inner {
  flex: 1;
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.solution-card-wide .solution-more-top { margin-bottom: 16px; }
.solution-card-wide .solution-cta {
  margin: 0;
  padding: 22px 28px;
  border-top: 0;
  border-left: 1px dashed var(--purple-100);
  align-self: stretch;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}
.solution-card-wide .solution-cta-btn { white-space: nowrap; }
.solution-more-inner {
  padding: 24px 26px 22px;
}
.solution-more-top {
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.solution-more-icons {
  display: flex;
  gap: 9px;
}
.solution-more-icon-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--purple-100);
}
.solution-more-icon-dot:nth-child(2) { background: var(--purple-200); }
.solution-more-icon-dot:nth-child(3) { background: var(--purple-300); }
.solution-more-infinity {
  font-size: 24px;
  line-height: 1;
  color: var(--color-arch-purple);
}
.solution-card-more h3 {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: 22px;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--color-data-black);
  margin: 0 0 12px;
  text-wrap: balance;
}
.solution-card-more h3 .color-blue { color: var(--color-arch-purple); }
.solution-card-more > .solution-more-inner > p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-secondary);
  margin: 0 0 18px;
  text-wrap: pretty;
}
.solution-more-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.solution-more-pill {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--purple-100);
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.01em;
  color: var(--color-arch-purple);
  white-space: nowrap;
}
.solution-card-more .solution-cta {
  border-top: 1px dashed var(--purple-100);
  margin-top: 24px;
  display: flex;
  justify-content: center;
}

/* ---- Responsive ---- */
/* ---- Light scroll-in reveal (JS-gated via .sol-anim on the section) ----
   Only hides cards when the driver in index.html has marked the section
   with .sol-anim, so pages without the driver keep cards visible. */
@media (prefers-reduced-motion: no-preference) {
  #solutions.sol-anim .solution-card {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 520ms var(--ease-out, cubic-bezier(0.2,0.8,0.2,1)),
                transform 520ms var(--ease-out, cubic-bezier(0.2,0.8,0.2,1));
  }
  #solutions.sol-anim .solution-card.is-revealed {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 920px) {
  .solutions-grid { grid-template-columns: 1fr; gap: 22px; }
  .solution-card-wide { grid-column: auto; grid-row: auto; flex-direction: column; align-items: stretch; }
  .solution-card-wide .solution-cta {
    border-left: 0;
    border-top: 1px dashed var(--purple-100);
    justify-content: center;
  }
}
@media (max-width: 560px) {
  .solutions-section { padding: var(--space-16) 0; }
  .solution-header { padding: 24px 22px 20px; }
  .solution-body { padding: 22px 22px 4px; }
  .solution-cta { padding: 22px 22px 28px; }
  .solution-header h3, .solution-card-more h3 { font-size: 23px; }
}