*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --border: #334155;
  --accent: #38bdf8;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --success: #4ade80;
  --error: #f87171;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

#app {
  width: 100%;
  max-width: 420px;
}

.logo {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 2rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: .4rem;
}

.subtitle {
  text-align: center;
  color: var(--muted);
  font-size: .9rem;
  margin-bottom: 1.75rem;
}

/* --- packages --- */
#packages-list { display: flex; flex-direction: column; gap: .75rem; }

.pkg-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: border-color .15s, transform .1s;
}
.pkg-card:hover { border-color: var(--accent); transform: translateY(-1px); }

.pkg-card .pkg-info .name { font-weight: 600; font-size: 1rem; }
.pkg-card .pkg-info .duration { color: var(--muted); font-size: .82rem; margin-top: .2rem; }
.pkg-card .price { font-size: 1.25rem; font-weight: 700; color: var(--accent); }

.error { color: var(--error); font-size: .85rem; text-align: center; margin-top: 1rem; }
.skeleton { background: var(--surface); border-radius: var(--radius); height: 68px; animation: pulse 1.2s infinite; }
@keyframes pulse { 0%,100%{opacity:.6} 50%{opacity:1} }

/* --- qr --- */
.qr-placeholder {
  width: 200px; height: 200px;
  background: var(--surface);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: var(--border);
  margin: 0 auto 1.25rem;
}
#qr-img { display: block; width: 200px; height: 200px; border-radius: var(--radius); margin: 0 auto 1.25rem; background: #fff; }

.pix-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  display: flex;
  gap: .75rem;
  align-items: center;
  margin-bottom: .5rem;
}
.pix-box span {
  font-size: .72rem;
  color: var(--muted);
  word-break: break-all;
  flex: 1;
  line-height: 1.4;
}
.btn-copy {
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  padding: .4rem .9rem;
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.copy-msg { text-align: center; font-size: .8rem; color: var(--success); height: 1rem; margin-bottom: .5rem; }

.status-wrap {
  display: flex; align-items: center; justify-content: center;
  gap: .6rem; margin: 1.25rem 0;
  color: var(--muted); font-size: .85rem;
}
.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn-back {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 8px;
  padding: .5rem 1.25rem;
  cursor: pointer;
  font-size: .85rem;
  display: block;
  margin: 0 auto;
}
.btn-back:hover { border-color: var(--muted); }

/* --- success --- */
#screen-success { text-align: center; }
.success-icon {
  width: 64px; height: 64px;
  background: var(--success);
  color: #0f172a;
  border-radius: 50%;
  font-size: 1.75rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
}
.expires { color: var(--muted); font-size: .85rem; margin-top: .75rem; }