/* =============================================================
   COMPONENTS  —  cards · buttons · reveal · shared UI
   ============================================================= */

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease-smooth),
    transform 0.9s var(--ease-smooth);
  will-change: opacity, transform;
}

.reveal.active {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* ── Solution cards (index — industry solutions) ── */
.solution-card {
  position: relative;
  /* background: var(--bg-card); */
  background: rgb(0 0 0 / 55%);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.5s var(--ease-smooth),
    border-color 0.5s var(--ease-smooth),
    box-shadow 0.5s var(--ease-smooth);
}

/* cursor-glow ::before */
.solution-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--x, 50%) var(--y, 50%),
      rgba(122, 162, 255, 0.15),
      transparent 40%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
  z-index: 1;
}

.solution-card:hover::before {
  opacity: 1;
}

.solution-card svg {
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
  fill: none;
  stroke-width: 1.8;
  transition: all 0.5s var(--ease-spring);
  position: relative;
  z-index: 2;
}

.solution-card h3 {
  font-size: 24px;
  margin-bottom: 12px;
  color: #fff;
  transition: color 0.3s, transform 0.3s;
  position: relative;
  z-index: 2;
}

.solution-card p {
  font-size: 15px;
  line-height: 1.6;
  opacity: 0.75;
  transition: opacity 0.3s, transform 0.3s;
  position: relative;
  z-index: 2;
}

/* base hover */
.solution-card:hover {
  transform: translateY(-12px) scale(1.02);
  border-color: var(--border-hover);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.5),
    inset 0 0 0 1px rgba(122, 162, 255, 0.1);
}

.solution-card:hover svg {
  transform: scale(1.15) rotate(8deg) translateY(-5px);
}

.solution-card:hover h3 {
  transform: translateX(5px);
}

.solution-card:hover p {
  opacity: 0.95;
  transform: translateX(5px);
}

/* card-1 blue */
.solution-card.card-1 svg {
  stroke: var(--blue);
}

.solution-card.card-1:hover {
  border-color: rgba(122, 162, 255, 0.4);
  box-shadow: 0 25px 70px rgba(122, 162, 255, 0.3), inset 0 0 0 1px rgba(122, 162, 255, 0.15);
}

.solution-card.card-1:hover h3 {
  color: var(--blue);
}

.solution-card.card-1:hover svg {
  stroke: var(--blue-light);
  filter: drop-shadow(0 5px 15px rgba(122, 162, 255, 0.4));
}

.solution-card.card-1:hover::before {
  background: radial-gradient(600px circle at var(--x, 50%) var(--y, 50%), rgba(122, 162, 255, 0.2), transparent 40%);
}

/* card-2 pink */
.solution-card.card-2 svg {
  stroke: var(--pink);
}

.solution-card.card-2:hover {
  border-color: rgba(255, 77, 141, 0.4);
  box-shadow: 0 25px 70px rgba(255, 77, 141, 0.3), inset 0 0 0 1px rgba(255, 77, 141, 0.15);
}

.solution-card.card-2:hover h3 {
  color: var(--pink);
}

.solution-card.card-2:hover svg {
  stroke: var(--pink-light);
  filter: drop-shadow(0 5px 15px rgba(255, 77, 141, 0.4));
}

.solution-card.card-2:hover::before {
  background: radial-gradient(600px circle at var(--x, 50%) var(--y, 50%), rgba(255, 77, 141, 0.2), transparent 40%);
}

/* card-3 green */
.solution-card.card-3 svg {
  stroke: var(--green);
}

.solution-card.card-3:hover {
  border-color: rgba(124, 255, 138, 0.4);
  box-shadow: 0 25px 70px rgba(124, 255, 138, 0.3), inset 0 0 0 1px rgba(124, 255, 138, 0.15);
}

.solution-card.card-3:hover h3 {
  color: var(--green);
}

.solution-card.card-3:hover svg {
  stroke: var(--green-light);
  filter: drop-shadow(0 5px 15px rgba(124, 255, 138, 0.4));
}

.solution-card.card-3:hover::before {
  background: radial-gradient(600px circle at var(--x, 50%) var(--y, 50%), rgba(124, 255, 138, 0.2), transparent 40%);
}

/* ── About cards ── */
.about-card {
  background: rgba(15, 20, 35, 0.55);
  backdrop-filter: blur(16px);
  border-radius: 18px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  max-width: 420px;
  position: relative;
  overflow: hidden;
  transition: transform 0.5s var(--ease-spring),
    border-color 0.5s,
    box-shadow 0.5s;
}

/* shine sweep */
.about-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.05) 50%, transparent 70%);
  transform: rotate(45deg);
  animation: cardShine 4s infinite;
  pointer-events: none;
}

@keyframes cardShine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }

  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

/* hover glow */
.about-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(167, 139, 250, 0.1), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}

.about-card:hover::after {
  opacity: 1;
}

.about-card:hover {
  transform: translateY(-8px);
  border-color: rgba(167, 139, 250, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4),
    inset 0 0 0 1px rgba(167, 139, 250, 0.1);
}

.about-card p {
  position: relative;
  z-index: 1;
}

/* card-line accent */
.card-line {
  height: 3px;
  margin-top: 16px;
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.card-line::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, white, transparent);
  transform: translateX(-100%);
  animation: lineShine 3s infinite;
}

@keyframes lineShine {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(100%);
  }
}

.card-line.blue {
  background: var(--blue);
  box-shadow: 0 0 10px rgba(122, 162, 255, 0.5);
}

.card-line.red {
  background: var(--pink);
  box-shadow: 0 0 10px rgba(255, 77, 141, 0.5);
}

.card-line.green {
  background: #9fe870;
  box-shadow: 0 0 10px rgba(159, 232, 112, 0.5);
}

/* ── CTA button ── */
.about-btn {
  margin-top: 20px;
  width: 180px;
  padding: 14px 20px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--red), #ff7175);
  color: #fff;
  font-weight: 600;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(255, 90, 95, 0.3);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s;
  animation: buttonPulse 2s infinite;
}

.about-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #ff7175, #ff8a8e);
  opacity: 0;
  transition: opacity 0.4s;
}

.about-btn:hover::before {
  opacity: 1;
}

.about-btn:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: 0 15px 35px rgba(255, 90, 95, 0.5), 0 0 20px rgba(255, 90, 95, 0.3);
}

.about-btn:active {
  transform: translateY(-2px) scale(1.02);
}

@keyframes buttonPulse {

  0%,
  100% {
    box-shadow: 0 4px 15px rgba(255, 90, 95, 0.3);
  }

  50% {
    box-shadow: 0 4px 25px rgba(255, 90, 95, 0.5);
  }
}

/* ── Btn primary (defence/aerospace/energy pages) ── */
.btn-primary {
  display: inline-block;
  padding: 14px 28px;
  background: var(--red);
  border-radius: var(--radius-sm);
  color: #fff;
  transition: transform 0.3s;
}

.btn-primary:hover {
  transform: translateY(-3px);
}

/* ── MR card (mr-solutions page) ── */
.mr-card {
  background: rgba(15, 20, 35, 0.45);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: left;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: transform 0.5s var(--ease-smooth), box-shadow 0.5s;
}

.mr-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}

.mr-card:hover::after {
  opacity: 1;
}

.mr-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6),
    inset 0 0 0 1px rgba(122, 162, 255, 0.15);
}

.mr-card li {
  margin: 12px 0;
  opacity: 0.85;
  transition: opacity 0.3s, transform 0.3s;
}

.mr-card:hover li {
  opacity: 1;
  transform: translateX(6px);
}

/* ── Stack graphic (web3 section) ── */
.stack-graphic {
  position: absolute;
  top: 100px;
  right: 100px;
  width: 140px;
  height: 140px;
  z-index: 1;
  animation: stackFloat 8s ease-in-out infinite;
  cursor: pointer;
}

@keyframes stackFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-16px);
  }
}

.stack-graphic span {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: var(--grad-card);
  transition: all 0.5s var(--ease-spring);
  box-shadow: 0 0 20px rgba(79, 107, 255, 0.3);
}

.stack-graphic span:nth-child(1) {
  opacity: 0.35;
  transform: rotate(0deg);
}

.stack-graphic span:nth-child(2) {
  opacity: 0.50;
  transform: rotate(8deg) translate(12px, -12px);
}

.stack-graphic span:nth-child(3) {
  opacity: 0.65;
  transform: rotate(-8deg) translate(-12px, 12px);
}

.stack-graphic:hover span {
  box-shadow: 0 0 40px rgba(79, 107, 255, 0.6);
}

.stack-graphic:hover span:nth-child(1) {
  transform: rotate(15deg) scale(1.1);
}

.stack-graphic:hover span:nth-child(2) {
  transform: rotate(25deg) translate(18px, -18px) scale(1.1);
}

.stack-graphic:hover span:nth-child(3) {
  transform: rotate(-25deg) translate(-18px, 18px) scale(1.1);
}