/* ----------------------------------------------------------
   Base
---------------------------------------------------------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  overflow-x: hidden;
}

/* ----------------------------------------------------------
   Aurora background
---------------------------------------------------------- */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background:
    radial-gradient(ellipse at top, #11111c 0%, #0a0a0f 60%);
}

.blob {
  position: absolute;
  width: 55vmax;
  height: 55vmax;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.32;
  will-change: transform;
}

.blob-1 {
  background: radial-gradient(circle, #00d4ff 0%, transparent 70%);
  top: -25%;
  left: -15%;
  animation: drift1 22s ease-in-out infinite;
}

.blob-2 {
  background: radial-gradient(circle, #ff006e 0%, transparent 70%);
  bottom: -25%;
  right: -15%;
  animation: drift2 26s ease-in-out infinite;
}

.blob-3 {
  background: radial-gradient(circle, #b537f2 0%, transparent 70%);
  top: 30%;
  right: 20%;
  width: 40vmax;
  height: 40vmax;
  opacity: 0.22;
  animation: drift3 30s ease-in-out infinite;
}

@keyframes drift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(15vw, 8vh) scale(1.1); }
  66%      { transform: translate(-8vw, 15vh) scale(0.95); }
}
@keyframes drift2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(-12vw, -10vh) scale(1.15); }
  66%      { transform: translate(10vw, -5vh) scale(0.9); }
}
@keyframes drift3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(-20vw, 10vh) scale(1.2); }
}

/* ----------------------------------------------------------
   Subtle grain overlay
---------------------------------------------------------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ----------------------------------------------------------
   Gradient text
---------------------------------------------------------- */
.gradient-text {
  background: linear-gradient(120deg, #00d4ff 0%, #b537f2 45%, #ff006e 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 9s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* ----------------------------------------------------------
   Buttons
---------------------------------------------------------- */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(120deg, #00d4ff 0%, #b537f2 100%);
  color: #0a0a0f;
  box-shadow: 0 8px 32px -10px rgba(0, 212, 255, 0.45);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px -10px rgba(0, 212, 255, 0.6);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}

/* ----------------------------------------------------------
   Section helpers
---------------------------------------------------------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 1.25rem;
}

.section-label::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: rgba(255, 255, 255, 0.3);
}

.section-heading {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 60rem;
}

/* ----------------------------------------------------------
   Cards (with mouse-follow glow)
---------------------------------------------------------- */
.card {
  position: relative;
  padding: 2rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mx, 50%) var(--my, 50%),
    rgba(0, 212, 255, 0.10) 0%,
    transparent 45%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-4px);
}

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

.card-tag {
  display: inline-block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.3rem 0.7rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

/* ----------------------------------------------------------
   Stack badges
---------------------------------------------------------- */
.stack-badge {
  padding: 1rem 1.25rem;
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-weight: 500;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
  transition: all 0.2s ease;
  cursor: default;
}

.stack-badge:hover {
  border-color: rgba(0, 212, 255, 0.4);
  background: rgba(0, 212, 255, 0.06);
  color: #00d4ff;
  transform: translateY(-2px);
}

/* ----------------------------------------------------------
   Scroll reveal
---------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .blob,
  .gradient-text {
    animation: none !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}