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

:root {
  --color-bg: #0f0f11;
  --color-surface: #1a1a1f;
  --color-border: #2a2a32;
  --color-text: #e8e8f0;
  --color-muted: #888899;
  --color-accent: #6c63ff;
  --color-accent-hover: #5a52e0;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius: 12px;
  --max-width: 1100px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--color-bg); color: var(--color-text); line-height: 1.6; }

/* ===== Utilities ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); }
.btn-large { padding: 14px 32px; font-size: 1.05rem; border-radius: 10px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(15, 15, 17, 0.85);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo { font-size: 1.25rem; font-weight: 700; color: var(--color-text); text-decoration: none; letter-spacing: -0.5px; }
.logo::before { content: '◈ '; color: var(--color-accent); }

/* ===== Hero ===== */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 40%, var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 540px;
  margin: 0 auto 40px;
}

/* ===== Features ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  padding: 60px 24px;
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.15s, transform 0.15s;
}
.feature-card:hover { border-color: var(--color-accent); transform: translateY(-3px); }
.feature-icon { font-size: 2rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--color-muted); }

/* ===== How It Works ===== */
.how-it-works { padding: 80px 0; background: var(--color-surface); }
.how-it-works h2 {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}
.steps { list-style: none; display: flex; flex-direction: column; gap: 24px; max-width: 600px; margin: 0 auto; }
.step { display: flex; align-items: flex-start; gap: 20px; }
.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}
.step h4 { font-size: 1rem; margin-bottom: 4px; }
.step p { font-size: 0.9rem; color: var(--color-muted); }

/* ===== CTA ===== */
.cta { padding: 100px 0; text-align: center; }
.cta h2 { font-size: 2rem; font-weight: 700; margin-bottom: 32px; letter-spacing: -0.5px; }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}