:root {
  --bg: #07110c;
  --card: rgba(8, 18, 13, 0.76);
  --line: rgba(119, 255, 170, 0.18);
  --text: #f4fff8;
  --muted: #b8cec0;
  --accent: #73ffae;
  --accent2: #22d26d;
  --danger: #ff6363;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  background: var(--bg);
  min-height: 100vh;
}

.bg {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(to top, rgba(0,0,0,.55), rgba(0,0,0,.18)),
    url('https://images.unsplash.com/photo-1511497584788-876760111969?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat;
  filter: brightness(.52) saturate(1.05);
  z-index: -1;
}

.app-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 18px 14px 165px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.brand {
  font-size: 18px;
  font-weight: 800;
}

.balance-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(0,0,0,.18);
  backdrop-filter: blur(8px);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 40px rgba(0,0,0,.22);
}

.hero {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 14px;
  margin-bottom: 14px;
}

.hero-title {
  font-size: 34px;
  line-height: 1.03;
  margin: 0 0 8px;
}

.hero-title span {
  color: var(--accent);
}

.muted {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.btn,
.package-card,
.pay-btn,
.copy-btn,
.submit-btn,
.nav-btn {
  border: 0;
  cursor: pointer;
  border-radius: 18px;
  padding: 14px 16px;
  font-weight: 700;
}

.btn,
.submit-btn,
.pay-btn,
.copy-btn.active,
.package-card.active {
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  color: #042212;
}

.btn.secondary,
.pay-btn.secondary,
.copy-btn {
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
  color: var(--text);
}

.section-title {
  font-size: 28px;
  margin: 0 0 6px;
}

.packages {
  display: grid;
  gap: 12px;
}

.package-card {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  color: var(--text);
  text-align: left;
}

.package-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.package-qty {
  color: var(--muted);
  font-size: 13px;
  margin-top: 6px;
}

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

input[type="number"],
input[type="file"] {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
}

.summary-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.requisites {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.req-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.req-value {
  word-break: break-all;
  color: var(--muted);
  font-family: monospace;
}

.pay-grid {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: calc(100% - 28px);
  max-width: 920px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  background: rgba(4, 10, 8, 0.78);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 10px;
  backdrop-filter: blur(12px);
}

.nav-btn {
  background: transparent;
  color: var(--muted);
}

.nav-btn.active {
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  color: #052312;
}

.notice {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.ok-box,
.warn-box {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 18px;
}

.ok-box {
  background: rgba(67, 201, 126, 0.12);
  border: 1px solid rgba(67, 201, 126, 0.22);
}

.warn-box {
  background: rgba(255, 99, 99, 0.1);
  border: 1px solid rgba(255, 99, 99, 0.25);
}

.hidden {
  display: none !important;
}

@media (max-width: 720px) {
  .hero,
  .grid,
  .quick-actions,
  .row {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 28px;
  }

  .bottom-nav {
  grid-template-columns: 1fr;
}
  .app-shell {
    padding: 14px 12px 200px;
  }
}