/* ZeroNetPay PWA — single stylesheet, mobile-first, dark theme. */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

:root {
  --bg: #0b1220;
  --bg-2: #0f1a2e;
  --card: #111c33;
  --card-hi: #16243f;
  --border: #1f2d4a;
  --text: #eaf0fb;
  --muted: #8aa0c4;
  --accent: #3b82f6;
  --accent-2: #06b6d4;
  --good: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  --r: 16px;
  --gap: 14px;
}

html, body {
  background: radial-gradient(1200px 700px at 70% -10%, #1a2c52 0%, #0b1220 60%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 520px;
  margin: 0 auto;
  padding-bottom: 92px; /* room for bottom nav */
}

/* --- Top bar --- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 18px 8px;
  padding-top: calc(18px + env(safe-area-inset-top, 0));
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 10px;
  font-size: 20px;
  color: white;
  box-shadow: var(--shadow);
}
.brand-name { font-weight: 700; letter-spacing: 0.2px; }
.brand-tag { font-size: 12px; color: var(--muted); }
.status { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--muted);
}
.dot.online { background: var(--good); box-shadow: 0 0 0 4px rgba(34,197,94,.18); }
.dot.offline { background: var(--bad); box-shadow: 0 0 0 4px rgba(239,68,68,.18); }

/* --- Views --- */
main {
  flex: 1;
  padding: 8px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card.tight { padding: 14px; }
.card .label { color: var(--muted); font-size: 12px; letter-spacing: 0.3px; text-transform: uppercase; }
.card .value { font-size: 28px; font-weight: 700; margin-top: 2px; }

.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
.spaced { display: flex; align-items: center; justify-content: space-between; }

h2 { margin: 8px 4px; font-size: 16px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
h3 { margin: 0 0 8px; font-size: 16px; }
p { margin: 0 0 8px; line-height: 1.45; }
small, .muted { color: var(--muted); font-size: 12px; }

/* --- Inputs --- */
input, button, select, textarea { font: inherit; color: inherit; }
input[type="text"], input[type="number"], input[type="tel"], input[type="email"] {
  width: 100%;
  padding: 14px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  outline: none;
}
input:focus { border-color: var(--accent); }
label { display: block; font-size: 13px; color: var(--muted); margin: 0 0 6px 4px; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.05s ease, opacity 0.2s ease;
  width: 100%;
}
.btn:active { transform: scale(0.99); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn.danger { background: linear-gradient(135deg, #ef4444, #b91c1c); }
.btn.success { background: linear-gradient(135deg, #16a34a, #22c55e); }
.btn-sm { padding: 8px 12px; font-size: 13px; width: auto; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--card-hi); color: var(--text);
  padding: 4px 10px; border-radius: 999px;
  font-size: 12px; border: 1px solid var(--border);
}
.chip.good { color: var(--good); border-color: rgba(34,197,94,0.35); }
.chip.warn { color: var(--warn); border-color: rgba(245,158,11,0.35); }
.chip.bad { color: var(--bad); border-color: rgba(239,68,68,0.35); }

/* --- Hero balance --- */
.hero {
  background:
    radial-gradient(600px 200px at 100% 0%, rgba(59,130,246,0.25), transparent 60%),
    linear-gradient(135deg, #1a2c52, #142244);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.hero .label { color: #b8c9ea; font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; }
.hero .balance {
  font-size: 40px; font-weight: 800; letter-spacing: -0.5px; margin-top: 2px;
}
.hero .meta { color: #b8c9ea; font-size: 13px; margin-top: 4px; }
.actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 16px; }

/* --- Tabbar --- */
.tabbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom, 0));
  z-index: 50;
}
@media (min-width: 521px) {
  .tabbar { left: 50%; transform: translateX(-50%); width: 520px; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
}
.tab {
  appearance: none; background: transparent; border: 0; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; padding: 8px 4px; font-size: 11px; cursor: pointer;
}
.tab .ic { font-size: 20px; line-height: 1; }
.tab.active { color: var(--text); }

/* --- Toast --- */
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(96px + env(safe-area-inset-bottom, 0));
  background: #16243f; border: 1px solid var(--border);
  color: white; padding: 10px 14px; border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 60; max-width: 90vw;
}
.toast.good { border-color: rgba(34,197,94,0.4); }
.toast.bad  { border-color: rgba(239,68,68,0.4); }

/* --- QR --- */
.qr-wrap {
  display: grid; place-items: center;
  background: white; padding: 16px; border-radius: 16px;
  margin: 8px auto 0;
  max-width: min(300px, 92vw);   /* never wider than viewport minus a margin */
}
.qr-wrap canvas, .qr-wrap img {
  display: block;
  width: 100%;                     /* scale down to fit the wrap on any screen */
  max-width: 268px;                /* 300 - 16*2 padding */
  height: auto;
  image-rendering: pixelated;      /* keep QR modules sharp when scaled */
  image-rendering: crisp-edges;
}
.scan-wrap {
  position: relative; aspect-ratio: 1 / 1; width: 100%; max-width: 320px;
  margin: 0 auto; border-radius: 16px; overflow: hidden; background: black;
}
.scan-wrap video { width: 100%; height: 100%; object-fit: cover; }
.scan-wrap .reticle {
  position: absolute; inset: 12%; border: 3px solid rgba(255,255,255,0.6);
  border-radius: 16px; pointer-events: none;
}

/* --- Lists --- */
.list { display: flex; flex-direction: column; gap: 8px; }
.list .item {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; display: flex; align-items: center; justify-content: space-between;
}
.list .item .lbl { font-weight: 600; }
.list .item .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.list .item .amt { font-weight: 700; }
.list .item .amt.in  { color: var(--good); }
.list .item .amt.out { color: var(--warn); }

/* --- Onboarding --- */
.onboard { display: flex; flex-direction: column; gap: 14px; padding: 30px 6px; }
.onboard .hero { text-align: center; padding: 30px; }
.onboard .balance { font-size: 28px; }

.note {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fde68a;
  padding: 10px 12px; border-radius: 12px; font-size: 13px;
}
.note.info {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.35);
  color: #cfe0ff;
}

.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.kbd {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  background: var(--bg-2); border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 6px; font-size: 12px;
}

.divider { height: 1px; background: var(--border); margin: 6px 0; }

/* --- Lock screen --- */
.lock-screen {
  min-height: calc(100dvh - 180px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 240ms ease-out;
}
.lock-card {
  width: 100%;
  max-width: 380px;
  background: linear-gradient(180deg, var(--card) 0%, var(--card-hi) 100%);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 32px 24px 26px;
  text-align: center;
  box-shadow: var(--shadow), 0 0 60px rgba(59, 130, 246, 0.08);
}
.lock-logo {
  width: 68px; height: 68px;
  font-size: 34px;
  margin: 0 auto 18px;
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.35);
  animation: pulseGlow 2.4s ease-in-out infinite;
}
.lock-title {
  margin: 0 0 4px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.3px;
}
.lock-sub { margin: 0 0 22px; color: var(--muted); font-size: 14px; }
.lock-actions { display: flex; flex-direction: column; gap: 10px; }
.lock-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 18px;
  font-size: 16px;
  font-weight: 700;
}
.lock-ic { font-size: 22px; line-height: 1; }
.lock-pin-form {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  text-align: left;
  animation: fadeIn 180ms ease-out;
}
.lock-pin-form input {
  font-size: 24px;
  letter-spacing: 0.4em;
  text-align: center;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  padding: 14px;
}
.lock-foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}

/* --- Chips (status pills) --- */
.chip {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  background: var(--bg-2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.chip.good { background: rgba(34,197,94,0.15); color: #86efac; border-color: rgba(34,197,94,0.3); }
.chip.warn { background: rgba(245,158,11,0.15); color: #fcd34d; border-color: rgba(245,158,11,0.3); }
.chip.bad  { background: rgba(239,68,68,0.15); color: #fca5a5; border-color: rgba(239,68,68,0.3); }

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 12px 30px rgba(59, 130, 246, 0.35); }
  50%      { box-shadow: 0 12px 40px rgba(59, 130, 246, 0.65); }
}

#view > * { animation: fadeIn 180ms ease-out; }

/* Larger tap targets on touch devices */
@media (pointer: coarse) {
  .btn { min-height: 46px; }
  .tab { min-height: 62px; }
}