:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #243044;
  --border: #2f3f56;
  --text: #e8eef7;
  --muted: #8fa3bf;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --gelir: #22c55e;
  --gider: #ef4444;
  --net: #a78bfa;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: linear-gradient(160deg, #0b1020 0%, #111827 40%, #0f1419 100%);
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #6366f1);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.brand h1 {
  margin: 0;
  font-size: 1.5rem;
}

.brand p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.summary-card {
  padding: 18px 20px;
}

.summary-card .label {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.summary-card strong {
  font-size: 1.45rem;
}

.summary-card.gelir strong { color: var(--gelir); }
.summary-card.gider strong { color: var(--gider); }
.summary-card.net strong { color: var(--net); }

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  background: rgba(255, 255, 255, 0.03);
  padding: 6px;
  border-radius: 999px;
  width: fit-content;
}

.tab {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  transition: 0.2s ease;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  background: var(--primary);
  color: white;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.grid-2 {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 18px;
  align-items: start;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.card-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.form {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(59, 130, 246, 0.45);
  border-color: var(--primary);
}

textarea {
  resize: vertical;
  min-height: 72px;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font: inherit;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-ghost {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: #2d3d55;
}

.btn-danger {
  background: transparent;
  color: var(--gider);
  border: 1px solid rgba(239, 68, 68, 0.35);
  padding: 6px 10px;
  font-size: 0.8rem;
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.12);
}

.btn-edit {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(59, 130, 246, 0.35);
  padding: 6px 10px;
  font-size: 0.8rem;
  margin-right: 6px;
}

.btn-edit:hover {
  background: rgba(59, 130, 246, 0.12);
}

.form-actions {
  display: flex;
  gap: 8px;
}

.hidden {
  display: none !important;
}

.import-label {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.filters {
  display: flex;
  gap: 8px;
}

.filters select,
#cariSearch {
  min-width: 140px;
}

.table-wrap {
  overflow-x: auto;
  padding: 0 4px 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.gelir {
  background: rgba(34, 197, 94, 0.15);
  color: var(--gelir);
}

.badge.gider {
  background: rgba(239, 68, 68, 0.15);
  color: var(--gider);
}

.badge.musteri {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.badge.tedarikci {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}

.amount.gelir { color: var(--gelir); font-weight: 600; }
.amount.gider { color: var(--gider); font-weight: 600; }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 28px 16px;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  transition: 0.25s ease;
  pointer-events: none;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .summary {
    grid-template-columns: 1fr;
  }

  .form-row,
  .filters {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .tabs {
    width: 100%;
    justify-content: space-between;
  }

  .tab {
    flex: 1;
    padding-inline: 8px;
  }
}