@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Mono:wght@300;400;500&display=swap');

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

:root {
  --bg: #0e0e11;
  --surface: #17171c;
  --surface-2: #1f1f27;
  --border: #2a2a36;
  --accent: #c8f060;
  --accent-dim: #9db844;
  --income: #60f0a8;
  --expense: #f06080;
  --text: #f0eeea;
  --text-muted: #7a7a8e;
  --radius: 14px;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

html { font-size: 16px; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 60% 40% at 80% 10%, rgba(200,240,96,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 10% 80%, rgba(96,240,168,0.04) 0%, transparent 60%);
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.header {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 1.4rem;
  color: var(--accent);
  line-height: 1;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  color: var(--text);
}

.main {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.summary {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  transition: border-color 0.2s;
}

.summary-card.balance {
  background: linear-gradient(135deg, #1a1f14 0%, #1a1a22 100%);
  border-color: rgba(200,240,96,0.2);
}

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

.summary-card.income { border-left: 3px solid var(--income); }
.summary-card.expense { border-left: 3px solid var(--expense); }

.card-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.summary-card.balance .card-label { color: var(--accent-dim); }

.card-amount {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.9rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.summary-row .card-amount { font-size: 1.25rem; }
.summary-card.income .card-amount { color: var(--income); }
.summary-card.expense .card-amount { color: var(--expense); }

.form-section,
.list-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}

.section-title {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
  position: relative;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form-group input[type="text"],
.form-group input[type="number"] {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  appearance: none;
  -moz-appearance: textfield;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200,240,96,0.08);
}

.form-group input.invalid {
  border-color: var(--expense);
  box-shadow: 0 0 0 3px rgba(240,96,128,0.08);
}

.error-msg {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--expense);
  display: none;
  margin-top: 2px;
}

.error-msg.visible { display: block; }

.type-group { gap: 10px; }

.type-toggle {
  display: flex;
  gap: 8px;
}

.type-btn {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.type-btn:hover { border-color: var(--text-muted); color: var(--text); }

.type-btn.active[data-type="income"] {
  background: rgba(96,240,168,0.1);
  border-color: var(--income);
  color: var(--income);
}

.type-btn.active[data-type="expense"] {
  background: rgba(240,96,128,0.1);
  border-color: var(--expense);
  color: var(--expense);
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 6px;
}

.btn-primary {
  flex: 1;
  padding: 13px;
  background: var(--accent);
  color: #0e0e11;
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover { background: #d9ff6e; }
.btn-primary:active { transform: scale(0.98); }

.btn-cancel {
  padding: 13px 20px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-cancel:hover { border-color: var(--text-muted); color: var(--text); }
.btn-cancel.hidden { display: none; }

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 12px;
}

.list-header .section-title { margin-bottom: 0; }

.filter-tabs {
  display: flex;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}

.filter-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 2rem;
  opacity: 0.4;
}

.empty-state p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
}

.transaction-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--surface-2);
  margin-bottom: 8px;
  transition: border-color 0.2s, transform 0.15s;
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.transaction-item:hover { border-color: var(--border); }

.tx-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tx-dot.income { background: var(--income); box-shadow: 0 0 6px rgba(96,240,168,0.5); }
.tx-dot.expense { background: var(--expense); box-shadow: 0 0 6px rgba(240,96,128,0.5); }

.tx-info { flex: 1; min-width: 0; }

.tx-title {
  font-weight: 600;
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text);
}

.tx-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.tx-amount {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.98rem;
  flex-shrink: 0;
}

.tx-amount.income { color: var(--income); }
.tx-amount.expense { color: var(--expense); }

.tx-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.tx-btn {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.tx-btn:hover { border-color: var(--accent); color: var(--accent); }
.tx-btn.delete:hover { border-color: var(--expense); color: var(--expense); }

@media (max-width: 480px) {
  .app { padding: 0 14px 50px; }
  .card-amount { font-size: 1.5rem; }
  .form-section, .list-section { padding: 18px; }
  .tx-date { display: none; }
  .list-header { flex-direction: column; align-items: flex-start; }
}