/* ============================================================
   Base & Reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #0b0e17;
  --bg2:       #111520;
  --accent:    #5b8dee;
  --accent2:   #a78bfa;
  --text:      #e2e8f0;
  --text-dim:  #8892a4;
  --border:    rgba(255, 255, 255, 0.07);
  --card-bg:   rgba(255, 255, 255, 0.04);
  --radius:    14px;
  --font:      'Segoe UI', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ============================================================
   Particle Canvas
   ============================================================ */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
}

/* Radial glow behind hero text */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  translate: -50% -50%;
  width: min(700px, 90vw);
  height: min(700px, 90vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91,141,238,.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 680px;
  animation: fadeUp .9s ease both;
}

.badge {
  display: inline-block;
  padding: .28rem .85rem;
  border: 1px solid rgba(91,141,238,.45);
  border-radius: 99px;
  font-size: .75rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.6rem;
  background: rgba(91,141,238,.08);
}

.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.15;
  margin-bottom: 1.2rem;
  background: linear-gradient(135deg, #ffffff 30%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cursor {
  display: inline-block;
  -webkit-text-fill-color: var(--accent);
  animation: blink .9s step-end infinite;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 2.4rem;
  line-height: 1.85;
}

.btn-primary {
  display: inline-block;
  padding: .7rem 2rem;
  border-radius: 99px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: .02em;
  transition: opacity .2s, transform .2s, box-shadow .2s;
  box-shadow: 0 4px 24px rgba(91,141,238,.35);
}

.btn-primary:hover {
  opacity: .88;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(91,141,238,.45);
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  translate: -50% 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  color: var(--text-dim);
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  animation: fadeIn 1.6s ease both;
}

.scroll-arrow {
  width: 18px;
  height: 18px;
  border-right: 2px solid var(--text-dim);
  border-bottom: 2px solid var(--text-dim);
  transform: rotate(45deg);
  animation: bounce 1.6s ease-in-out infinite;
}

/* ============================================================
   Roadmap
   ============================================================ */
.roadmap {
  position: relative;
  z-index: 1;
  padding: 7rem 1.5rem;
  background: linear-gradient(to bottom, transparent, var(--bg2) 15%, var(--bg2) 85%, transparent);
}

.container {
  max-width: 1020px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  letter-spacing: -.015em;
  margin-bottom: .6rem;
  background: linear-gradient(135deg, #fff 40%, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-sub {
  text-align: center;
  color: var(--text-dim);
  margin-bottom: 3.5rem;
  font-size: .98rem;
}

/* Cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.8rem 1.8rem;
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  opacity: 0;
  transform: translateY(30px);
}

.card.visible {
  animation: cardIn .6s ease forwards;
}

.card:nth-child(2) { animation-delay: .1s; }
.card:nth-child(3) { animation-delay: .2s; }

/* Glow on hover */
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: radial-gradient(circle at 50% 0%, rgba(91,141,238,.12), transparent 65%);
  opacity: 0;
  transition: opacity .3s;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(91,141,238,.4);
  box-shadow: 0 16px 40px rgba(0,0,0,.35);
}

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

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(91,141,238,.12);
  color: var(--accent);
  margin-bottom: 1.2rem;
}

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card-num {
  position: absolute;
  top: 1.4rem;
  right: 1.6rem;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: rgba(255,255,255,.1);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 650;
  margin-bottom: .7rem;
  color: #fff;
}

.card p {
  font-size: .88rem;
  color: var(--text-dim);
  line-height: 1.75;
  margin-bottom: 1.2rem;
}

.card-tag {
  font-size: .72rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--accent2);
  opacity: .8;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-dim);
  font-size: .82rem;
  border-top: 1px solid var(--border);
}

/* ============================================================
   Keyframes
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0);    }
  50%       { transform: rotate(45deg) translateY(5px); }
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0);    }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 600px) {
  .cards {
    grid-template-columns: 1fr;
  }
}