:root {
  --bg: var(--tg-theme-bg-color, #0d0e14);
  --bg-secondary: var(--tg-theme-secondary-bg-color, #15161f);
  --text: var(--tg-theme-text-color, #ffffff);
  --hint: var(--tg-theme-hint-color, #8a8d98);
  --accent: var(--tg-theme-button-color, #3aa1ff);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --card: #171826;
  --card-border: #24263a;
  --success: #2fd674;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 96px;
  background: radial-gradient(circle at top, #171a2b 0%, var(--bg) 55%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0 8px;
}

.user-chip { display: flex; align-items: center; gap: 8px; }

.user-avatar {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, #3aa1ff, #7d5fff);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}

.user-name { font-weight: 600; font-size: 15px; }

.balance-chip {
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  color: var(--success);
}

.banner {
  margin-top: 12px;
  padding: 20px;
  border-radius: 20px;
  background: linear-gradient(135deg, #3aa1ff 0%, #6f6bff 100%);
  color: #fff;
}
.banner-label { font-size: 11px; font-weight: 700; letter-spacing: 1px; opacity: .85; }
.banner-title { font-size: 21px; font-weight: 700; margin-top: 6px; line-height: 1.3; font-style: italic; }
.banner-sub { font-size: 12.5px; opacity: .9; margin-top: 10px; }

.search-wrap { margin-top: 16px; }
.search-wrap input {
  width: 100%;
  padding: 13px 16px;
  border-radius: 14px;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--text);
  font-size: 14.5px;
  outline: none;
}
.search-wrap input::placeholder { color: var(--hint); }

.section-label {
  margin-top: 22px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .6px;
  color: var(--hint);
}

.gift-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.gift-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 14px 8px;
  text-align: center;
  cursor: pointer;
  transition: transform .1s ease, border-color .15s ease;
}
.gift-card:active { transform: scale(0.96); border-color: var(--accent); }

.gift-card .emoji { font-size: 30px; }
.gift-card .emoji-img { width: 30px; height: 30px; object-fit: contain; }
.gift-card .stars { font-size: 11.5px; color: var(--hint); margin-top: 6px; }
.gift-card .price { font-size: 12.5px; font-weight: 700; margin-top: 3px; color: var(--text); }
.gift-card .badge-limited {
  display: inline-block;
  margin-top: 4px;
  font-size: 9px;
  font-weight: 700;
  color: #ffb84d;
  background: rgba(255,184,77,.12);
  padding: 2px 6px;
  border-radius: 6px;
}

.loading, .empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--hint);
  padding: 40px 0;
  font-size: 13.5px;
}

.tabbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(15,16,24,.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--card-border);
  display: flex;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
}
.tab-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--hint);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  padding: 6px 0;
  cursor: pointer;
}
.tab-btn.active { color: var(--accent); }
.tab-icon { font-size: 19px; }

.sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  display: none;
  align-items: flex-end;
  z-index: 50;
}
.sheet-overlay.open { display: flex; }

.sheet {
  width: 100%;
  background: var(--bg-secondary);
  border-radius: 22px 22px 0 0;
  padding: 10px 20px calc(24px + env(safe-area-inset-bottom));
  animation: slideUp .18s ease-out;
}
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.sheet-handle {
  width: 40px; height: 4px;
  background: var(--card-border);
  border-radius: 4px;
  margin: 6px auto 14px;
}

.sheet-gift-preview { text-align: center; margin-bottom: 16px; }
.sheet-emoji { font-size: 46px; }
.sheet-img { width: 46px; height: 46px; object-fit: contain; }
.sheet-price { font-size: 16px; font-weight: 700; margin-top: 4px; color: var(--success); }

.field-label { font-size: 12px; color: var(--hint); display: block; margin: 12px 0 6px; }

.sheet input, .sheet textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--text);
  font-size: 14.5px;
  outline: none;
  font-family: inherit;
  resize: none;
}
.sheet textarea { height: 64px; }

.primary-btn {
  width: 100%;
  margin-top: 18px;
  padding: 14px;
  border: none;
  border-radius: 14px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
}
.primary-btn:disabled { opacity: .5; }

.ghost-btn {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  border: none;
  background: none;
  color: var(--hint);
  font-size: 14px;
  cursor: pointer;
}