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

:root {
  --bg:             #f5f5f7;
  --card:           #ffffff;
  --text-primary:   #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary:  #aeaeb2;
  --border:         rgba(0,0,0,0.08);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.06);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.14), 0 4px 16px rgba(0,0,0,0.08);
  --r-sm:  6px;
  --r-md:  12px;
  --r-lg:  18px;
  --spring: cubic-bezier(.34,1.1,.64,1);
  --ease:   cubic-bezier(.25,.46,.45,.94);
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* prevent font size inflation on iOS */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Nav ─────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 20px;
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.2px;
  color: var(--text-primary);
  text-decoration: none;
  /* ensure tap target */
  padding: 8px 0;
}

.nav-logo span { color: var(--text-secondary); font-weight: 400; }

.nav-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-tertiary);
  transition: background 0.3s;
  flex-shrink: 0;
}

.status-dot.online  { background: #34c759; box-shadow: 0 0 0 2px rgba(52,199,89,0.2); }
.status-dot.offline { background: #ff3b30; }

/* ─── Footer ──────────────────────────────── */
footer {
  text-align: center;
  padding: 28px 20px;
  color: var(--text-tertiary);
  font-size: 12px;
  border-top: 1px solid var(--border);
}

/* ─── Animations ──────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.6); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes drawPath {
  to { stroke-dashoffset: 0; }
}