:root {
  --bg: #0f172a;
  --bg-elevated: #020617;
  --card-bg: #020617;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.1);
  --accent-strong: #0ea5e9;
  --danger: #f97373;
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --border: #1f2937;
  --radius-lg: 18px;
  --radius-md: 10px;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.7);
  --shadow-subtle: 0 10px 30px rgba(15, 23, 42, 0.7);
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 55%, #020617 100%);
  color: var(--text);
  min-height: 100vh;
}

body {
  display: flex;
  justify-content: center;
  align-items: stretch;
}

/* layout */

.page {
  width: 100%;
  max-width: 1100px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page--centered {
  align-items: center;
  justify-content: center;
}

/* top-bar */

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(15,23,42,0.9), rgba(15,23,42,0.7));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-subtle);
  border: 1px solid rgba(148, 163, 184, 0.12);
  backdrop-filter: blur(16px);
}

.top-bar__title {
  display: flex;
  flex-direction: column;
}

.top-bar__title-main {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.top-bar__title-sub {
  font-size: 12px;
  color: var(--text-muted);
}

.top-bar__actions {
  display: flex;
  gap: 8px;
}

/* cards */

.card {
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 55%),
              var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.14);
  backdrop-filter: blur(18px);
}

.card--compact {
  padding: 12px 14px;
}

.card__title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 10px;
}

.card__description {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* forms */

.form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.label {
  font-size: 13px;
  color: var(--text-muted);
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  font-size: 13px;
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.4);
}

.textarea {
  min-height: 60px;
  resize: vertical;
}

/* buttons */

.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  border-radius: 999px;
  padding: 7px 16px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 0.15s ease, transform 0.08s ease, box-shadow 0.15s ease;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #0b1120;
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.55);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.7);
}

.btn--ghost {
  background: rgba(15, 23, 42, 0.95);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.btn--ghost:hover {
  background: rgba(15, 23, 42, 1);
  transform: translateY(-1px);
}

.btn--danger {
  background: rgba(248, 113, 113, 0.08);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.6);
}

.btn--danger:hover {
  background: rgba(248, 113, 113, 0.18);
}

/* login */

.login-shell {
  max-width: 420px;
  width: 100%;
}

.login-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 6px;
  text-align: center;
}

.login-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 18px;
}

.error {
  font-size: 13px;
  color: var(--danger);
  margin-top: 6px;
}

/* summary */

.summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.summary-item {
  padding: 8px 10px;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.summary-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.summary-value {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 600;
}

.summary-value--income {
  color: #4ade80;
}

.summary-value--expense {
  color: #f97373;
}

.summary-value--balance {
  color: var(--accent);
}

/* tables */

.table-wrapper {
  margin-top: 10px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: rgba(15, 23, 42, 0.85);
  overflow: hidden;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.table th,
.table td {
  padding: 8px 12px;
  font-size: 13px;
  text-align: left;
}

.table thead {
  background: rgba(15, 23, 42, 0.95);
}

.table th {
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(55, 65, 81, 0.9);
}

.table tbody tr:nth-child(odd) {
  background: rgba(15, 23, 42, 0.9);
}

.table tbody tr:nth-child(even) {
  background: rgba(15, 23, 42, 0.8);
}

.table tbody tr:hover {
  background: rgba(15, 23, 42, 1);
}

/* chips */

.chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
}

.chip--income {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
}

.chip--expense {
  background: rgba(248, 113, 113, 0.12);
  color: #fca5a5;
}

/* grids */

.grid {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr;
  gap: 16px;
}

.grid--stack-mobile {
  grid-template-columns: 1fr;
}

/* responsive */

@media (max-width: 768px) {
  html, body {
    font-size: 16px;
  }

  .page {
    padding: 10px;
  }

  .top-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .card {
    padding: 14px;
  }

  .login-shell {
    max-width: 100%;
  }

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

.hidden {
  display: none !important;
}

/* Toast */

.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 13px;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.7);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.18s ease-out, transform 0.18s ease-out;
  pointer-events: none;
  z-index: 9999;
}

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

.toast--success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.7);
  color: #bbf7d0;
}

.toast--error {
  background: rgba(248, 113, 113, 0.15);
  border: 1px solid rgba(248, 113, 113, 0.7);
  color: #fecaca;
}

/* Modal */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9990;
}

.modal {
  width: 100%;
  max-width: 420px;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 55%),
              #020617;
  border-radius: 18px;
  padding: 16px 18px;
  box-shadow: 0 24px 55px rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.modal__title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
}

.modal__subtitle {
  margin: 0 0 12px;
  font-size: 13px;
  color: #9ca3af;
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
}