:root {
  --bp-maroon: #60102b;
  --bp-maroon-dark: #4a0c21;
  --bp-blue: #2563eb;
  --bp-bg: #f3f4f6;
  --bp-card: #ffffff;
  --bp-muted: #6b7280;
  --bp-line: #e5e7eb;
  --bp-success: #16a34a;
  --bp-warn: #ea580c;
  --bp-danger: #dc2626;
}

.buyer-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.buyer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.buyer-modal {
  width: min(520px, 100%);
  max-height: min(92vh, 860px);
  overflow: auto;
  background: var(--bp-card);
  border-radius: 22px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  font-family: Montserrat, Lato, system-ui, sans-serif;
  color: #111827;
  position: relative;
}
.buyer-modal--wide { width: min(760px, 100%); }

.buyer-modal__close {
  position: absolute;
  top: 0.85rem;
  right: 0.95rem;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.06);
  color: #374151;
  font-size: 1.25rem;
  cursor: pointer;
}

.buyer-modal__head {
  padding: 1.4rem 1.4rem 0.8rem;
  text-align: center;
}
.buyer-modal__head h2 {
  margin: 0;
  color: var(--bp-maroon);
  font-size: 1.35rem;
  font-weight: 800;
}
.buyer-modal__head p {
  margin: 0.35rem 0 0;
  color: var(--bp-muted);
  font-size: 0.92rem;
}

.buyer-logo {
  width: 120px;
  margin: 0 auto 0.8rem;
}

.buyer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 0 1.2rem 1rem;
}
.buyer-nav__btn {
  border: 0;
  border-radius: 14px;
  padding: 0.95rem 0.7rem;
  background: var(--bp-maroon);
  color: #fff;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease;
}
.buyer-nav__btn:hover { transform: translateY(-1px); filter: brightness(1.06); }
.buyer-nav__btn--ghost {
  background: #fff;
  color: var(--bp-maroon);
  border: 2px solid var(--bp-maroon);
}

.buyer-balance {
  text-align: center;
  padding: 0.2rem 1rem 1rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--bp-maroon);
}

.buyer-hours {
  margin: 0 1.2rem 1rem;
  padding: 0.85rem 1rem;
  background: #f9fafb;
  border-left: 4px solid var(--bp-maroon);
  border-radius: 12px;
}
.buyer-hours small {
  display: block;
  color: var(--bp-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  margin-bottom: 0.25rem;
}
.buyer-hours p { margin: 0; font-size: 0.92rem; line-height: 1.45; }

.buyer-field {
  padding: 0 1.2rem 1rem;
}
.buyer-field label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 700;
  font-size: 0.88rem;
}
.buyer-field input,
.buyer-field select,
.buyer-field textarea {
  width: 100%;
  border: 1px solid #d1d5db;
  border-radius: 999px;
  padding: 0.85rem 1rem;
  font: inherit;
  background: #fff;
}
.buyer-field textarea { border-radius: 14px; min-height: 90px; resize: vertical; }

.buyer-actions {
  display: flex;
  gap: 0.75rem;
  padding: 0 1.2rem 1.2rem;
}
.buyer-btn {
  flex: 1;
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1rem;
  font-weight: 800;
  cursor: pointer;
}
.buyer-btn--primary { background: var(--bp-maroon); color: #fff; }
.buyer-btn--ghost { background: #e5e7eb; color: #111827; }
.buyer-btn--blue { background: var(--bp-blue); color: #fff; }
.buyer-btn:disabled { opacity: 0.55; cursor: wait; }

.buyer-transfer {
  margin: 0 1.2rem 1rem;
  padding: 1rem;
  background: #f9fafb;
  border-radius: 16px;
  line-height: 1.55;
}
.buyer-transfer strong { color: var(--bp-maroon); }
.buyer-transfer .account { color: var(--bp-blue); font-weight: 800; font-size: 1.05rem; }

.buyer-upload-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0 1.2rem 1rem;
}
.buyer-upload-row span { font-weight: 700; }

.buyer-list { padding: 0 1.2rem 1.2rem; }
.buyer-list__toolbar {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding: 1rem;
  background: #f9fafb;
  border-radius: 16px;
}
.buyer-list__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.buyer-chip {
  border: 2px solid transparent;
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  background: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
}
.buyer-chip--process { border-color: var(--bp-warn); color: var(--bp-warn); }
.buyer-chip--ok { border-color: var(--bp-success); color: var(--bp-success); }
.buyer-chip--bad { border-color: var(--bp-danger); color: var(--bp-danger); }
.buyer-chip--all { border-color: var(--bp-blue); color: var(--bp-blue); }
.buyer-chip.active { color: #fff; }
.buyer-chip--process.active { background: var(--bp-warn); }
.buyer-chip--ok.active { background: var(--bp-success); }
.buyer-chip--bad.active { background: var(--bp-danger); }
.buyer-chip--all.active { background: var(--bp-blue); }

.buyer-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0.35rem 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--bp-line);
  font-size: 0.92rem;
}
.buyer-row span:first-child { color: var(--bp-muted); font-weight: 700; }

.buyer-badge {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border-radius: 8px;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
}
.buyer-badge--ok { background: var(--bp-success); }
.buyer-badge--pending { background: var(--bp-warn); }
.buyer-badge--bad { background: var(--bp-danger); }
.buyer-badge--process { background: var(--bp-warn); }

.buyer-empty {
  text-align: center;
  color: var(--bp-muted);
  padding: 1.5rem 0;
}

.buyer-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid #d1d5db;
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  background: #fff;
  font-weight: 700;
  cursor: pointer;
  margin-left: auto;
}

.buyer-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.2rem 0.5rem;
}
.buyer-topbar h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
}

.buyer-wa-help {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  margin: 0 1.2rem 1.2rem;
  width: calc(100% - 2.4rem);
  border-radius: 999px;
  padding: 0.85rem;
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.buyer-msg {
  margin: 0 1.2rem 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  font-size: 0.88rem;
}
.buyer-msg--error { background: #fef2f2; color: #991b1b; }
.buyer-msg--ok { background: #ecfdf5; color: #065f46; }

.buyer-auth-tabs {
  display: flex;
  gap: 0.5rem;
  padding: 0 1.2rem 0.5rem;
}
.buyer-auth-tabs button {
  flex: 1;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  padding: 0.6rem;
  font-weight: 800;
  color: var(--bp-muted);
  cursor: pointer;
}
.buyer-auth-tabs button.active {
  color: var(--bp-maroon);
  border-bottom-color: var(--bp-maroon);
}

@media (max-width: 640px) {
  .buyer-modal { border-radius: 18px; }
  .buyer-nav { grid-template-columns: 1fr; }
}