/* Reset & base */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root{
  --bg: #0f1724;
  --card-radius: 16px;
  --card-padding: 1.25rem;
  --glass: rgba(255,255,255,0.06);
  --fg: #e6eef8;
  --muted: rgba(230,238,248,0.75);
  --gap: 1.25rem;
  --shadow: 0 10px 30px rgba(2,6,23,0.65);
  --focus: 3px solid rgba(255,255,255,0.12);
}

/* Page */
html,body{ height:100%; }
body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg,#071025 0%, #0f1724 60%);
  color: var(--fg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding: 3.5rem 1.25rem;
}

/* Header */
.page-header{
  text-align:center;
  margin-bottom: 2rem;
}
.page-header h1{
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  letter-spacing: -0.02em;
}
.page-header .lead{
  color: var(--muted);
  margin-top: .35rem;
  font-size: .95rem;
}

/* Grid wrapper */
.cards-wrap{
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(5, 1fr);
  align-items: stretch;
  padding: 0 0.5rem;
}

/* Responsive: collapse to 2/3 cols on small screens */
@media (max-width:1100px){
  .cards-wrap{ grid-template-columns: repeat(3, 1fr); }
}
@media (max-width:720px){
  .cards-wrap{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width:420px){
  .cards-wrap{ grid-template-columns: 1fr; }
}

/* Card base */
.card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.015));
  border-radius: var(--card-radius);
  padding: .35rem;           /* outer padding for gradient border illusion */
  position: relative;
  overflow: visible;
  transition: transform .45s cubic-bezier(.2,.9,.3,1), box-shadow .35s ease;
  transform-style: preserve-3d;
  box-shadow: var(--shadow);
  cursor: pointer;
  outline: none;
  will-change: transform;
}

/* Inner card to hold gradient animated background */
.card-inner{
  background: linear-gradient(135deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
  border-radius: calc(var(--card-radius) - 4px);
  padding: var(--card-padding);
  height: 100%;
  display:flex;
  flex-direction:column;
  gap:.8rem;
  align-items:flex-start;
  justify-content:space-between;
  position: relative;
  z-index: 2;
  overflow:hidden;
}

/* animated gradient overlay (pseudo-element) */
.card::before{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
  padding: 2px;
  background: linear-gradient(120deg, rgba(255,0,150,0.18), rgba(0,200,255,0.18) 40%, rgba(0,255,150,0.12) 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  filter: blur(12px) saturate(1.1);
  opacity: 0.9;
  transform: translateZ(-1px);
}

/* colorful animated gradient layer behind inner content */
.card::after{
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 10% 20%, rgba(255, 120, 160, .12), transparent 8%),
              radial-gradient(circle at 80% 80%, rgba(0, 200, 255, .08), transparent 10%),
              radial-gradient(circle at 70% 20%, rgba(0,255,150, .06), transparent 12%);
  z-index:1;
  transform: rotate(0deg);
  animation: flow 8s linear infinite;
  opacity:.95;
  transition: opacity .3s ease;
  pointer-events:none;
}

/* Flow animation for subtle movement */
@keyframes flow {
  0%{ transform: translate(0,0) rotate(0deg) scale(1); }
  50%{ transform: translate(6%, -4%) rotate(8deg) scale(1.05); }
  100%{ transform: translate(0,0) rotate(0deg) scale(1); }
}

/* Icon, title, text */
.card-icon{
  font-size: 1.8rem;
  background: linear-gradient(90deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  padding: .5rem;
  border-radius: 10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow: 0 6px 18px rgba(2,6,23,0.45);
}

.card-title{
  font-size: 1.05rem;
  margin-top:.15rem;
  letter-spacing: -0.01em;
  
}
.card-text{
  color: var(--muted);
  font-size: .95rem;
  margin-top: .3rem;
  flex-grow:1;
}

/* CTA */
.card-cta {
  display: flex;               /* flexbox */
  align-items: center;         /* vertical center */
  justify-content: center;     /* horizontal center */
  text-decoration: none;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff7eb3, #ff758c, #ffae00, #47c2ff, #7d5fff);
  background-size: 400% 400%;
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  align-self: flex-end;
  transition: transform .25s ease, box-shadow .2s ease, background-position 3s ease;
  box-shadow: 0 6px 18px rgba(2,6,23,0.45);
  animation: gradientFlow 8s ease infinite;
}

/* Hover & focus animations: tilt + scale + glow */
.card:hover,
.card:focus{
  transform: translateY(-8px) rotateX(2deg) scale(1.03);
  box-shadow: 0 18px 45px rgba(2,6,23,0.75);
}
.card:hover::after,
.card:focus::after{
  opacity: 1;
  transform: translate(8%, -6%) rotate(6deg) scale(1.06);
}

/* Hover + Focus Effects */
.card:hover .card-cta,
.card:focus .card-cta {
  transform: translateY(-3px) scale(1.05) rotate(-1deg);
  box-shadow: 0 12px 35px rgba(2, 6, 23, 0.65);
  background-position: right center;
}

/* Entrance animation: stagger via nth-child */
.card{
  opacity: 0;
  transform-origin: center;
  animation: fadeUp .6s cubic-bezier(.2,.9,.25,1) forwards;
}
.card:nth-child(1){ animation-delay: .08s; }
.card:nth-child(2){ animation-delay: .16s; }
.card:nth-child(3){ animation-delay: .24s; }
.card:nth-child(4){ animation-delay: .32s; }
.card:nth-child(5){ animation-delay: .40s; }

@keyframes fadeUp {
  from { transform: translateY(14px) scale(.995); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

/* Keyboard focus */
.card:focus {
  box-shadow: 0 20px 50px rgba(2,6,23,0.8);
  border-radius: var(--card-radius);
}
.card:focus-visible {
  outline: var(--focus);
  outline-offset: 4px;
}

/* Make sure links are keyboard-accessible */
.card-cta:focus {
  outline: 2px solid #ffae00;
  outline-offset: 4px;
}
@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Small polish: readable text selection */
::selection{
  background: rgba(255,255,255,0.07);
  color: var(--fg);
}
.card-icon img {
  width: 150px;
  height: 80px;
  object-fit: contain; /* keeps proportions inside dimensions */
  display: block;
}