/* ===== Navbar ===== */
.navbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(7, 11, 20, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 1.5rem;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 0.6rem; cursor: pointer; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 11px;
  background: var(--grad); display: grid; place-items: center;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}
.logo-text { font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; }
.logo-text span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 1.75rem; }
.nav-link {
  font-size: 0.92rem; color: var(--text-muted); cursor: pointer;
  transition: color 0.2s ease; position: relative;
}
.nav-link:hover { color: var(--text); }
.nav-link::after {
  content: ''; position: absolute; bottom: -6px; inset-inline: 0;
  height: 2px; border-radius: 2px; background: var(--grad);
  transform: scaleX(0); transform-origin: center; transition: transform 0.25s ease;
}
.nav-link:hover::after { transform: scaleX(1); }
.hamburger {
  display: none; background: none; border: none; color: var(--text);
  cursor: pointer; padding: 0.5rem;
}
.mobile-menu {
  display: grid; gap: 0.35rem; padding: 1rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--border); background: rgba(7, 11, 20, 0.96);
  animation: fadeUp 0.25s ease;
}
.mobile-menu .nav-link { padding: 0.5rem 0; border-bottom: 1px solid var(--border); }

/* ===== Hero ===== */
.hero {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3rem;
  align-items: center; padding: 4.5rem 0 3rem; position: relative; z-index: 1;
}
.hero h1 {
  font-size: clamp(2.1rem, 5.2vw, 3.5rem); font-weight: 800;
  letter-spacing: -0.045em; line-height: 1.16;
}
.hero p.lead { max-width: 520px; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 2rem; }
.hero-note {
  display: flex; align-items: center; gap: 0.5rem; margin-top: 1.4rem;
  font-size: 0.85rem; color: var(--text-dim);
}
.trust-row {
  display: flex; align-items: center; gap: 0.8rem; margin-top: 1.8rem;
  font-size: 0.85rem; color: var(--text-muted);
}
.avatar-stack { display: flex; }
.avatar-stack .avatar { margin-inline-start: -10px; box-shadow: 0 0 0 2px var(--bg); }
.avatar-stack .avatar:first-child { margin-inline-start: 0; }
.avatar {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  font-size: 0.72rem; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, #334155, #1e293b);
}
.avatar.a1 { background: linear-gradient(135deg, #2563eb, #6366f1); }
.avatar.a2 { background: linear-gradient(135deg, #22c55e, #0ea5e9); }
.avatar.a3 { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.avatar.a4 { background: linear-gradient(135deg, #a855f7, #ec4899); }

/* ===== Phone mockup ===== */
.phone-wrap { display: grid; place-items: center; position: relative; }
.phone-wrap::before {
  content: ''; position: absolute; width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.35), transparent 68%);
  filter: blur(30px); z-index: -1;
}
.phone {
  width: 300px; border-radius: 38px; padding: 12px;
  background: linear-gradient(160deg, #1e293b, #0b1220);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  animation: floaty 6s ease-in-out infinite;
}
.phone-screen {
  background: #0a0f1c; border-radius: 28px; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.phone-bar {
  display: flex; align-items: center; gap: 0.5rem; padding: 0.7rem 0.85rem;
  background: rgba(255, 255, 255, 0.04); border-bottom: 1px solid var(--border);
}
.phone-bar .name { font-size: 0.78rem; font-weight: 700; line-height: 1.2; }
.phone-bar .status { font-size: 0.62rem; color: var(--accent-2); line-height: 1.2; }
.phone-icons { margin-inline-start: auto; display: flex; gap: 0.55rem; color: var(--text-dim); }
.chat { padding: 0.9rem; display: grid; gap: 0.55rem; min-height: 260px; }
.bubble {
  max-width: 82%; padding: 0.5rem 0.75rem; border-radius: 14px;
  font-size: 0.75rem; line-height: 1.6; animation: fadeUp 0.4s ease both;
}
.bubble.in {
  background: rgba(255, 255, 255, 0.07); border-end-start-radius: 4px;
  border: 1px solid var(--border);
}
.bubble.out {
  background: var(--grad); color: #fff; margin-inline-start: auto;
  border-end-end-radius: 4px; box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
}
.bubble .time { display: block; font-size: 0.58rem; opacity: 0.65; margin-top: 0.15rem; }
.typing { display: flex; gap: 3px; align-items: center; padding: 0.6rem 0.8rem; }
.typing i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--text-dim);
  animation: blink 1.2s infinite;
}
.typing i:nth-child(2) { animation-delay: 0.2s; }
.typing i:nth-child(3) { animation-delay: 0.4s; }