/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #080810;
  color: #e0e0f0;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}
button { cursor: pointer; font-family: inherit; border: none; outline: none; }
input, textarea, select { font-family: inherit; outline: none; border: none; }

/* Styl dla napisu zamiast przełącznika w modal-sheet */
.modal-msg-container {
  text-align: center;
  padding: 0 16px 20px;
}
#modal-msg {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.msg-expense { color: var(--red-lt); } /* Kolor czerwony dla kosztu */
.msg-income { color: var(--blue-lt); }  /* Kolor niebieski dla przychodu */


/* ===== CSS VARIABLES ===== */
:root {
  --bg:        #080810;
  --surface1:  #10101e;
  --surface2:  #18182c;
  --surface3:  #222238;
  --border:    #2a2a44;
  --blue:      #1a73e8;
  --blue-lt:   #64b5f6;
  --blue-dk:   #0d47a1;
  --red:       #f44336;
  --red-lt:    #ef9a9a;
  --red-dk:    #b71c1c;
  --text:      #ffffff;
  --text2:     #b0b0cc;
  --text3:     #60607a;
  --r:         14px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ===== SCREENS ===== */
.screen { display: none; flex-direction: column; min-height: 100vh; }
.screen.active { display: flex; }

/* ===== LOGIN ===== */
#screen-login {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 40%, #0d1a3a 0%, #080810 70%);
  padding: 40px 24px;
}
.login-logo { font-size: 64px; margin-bottom: 16px; }
.login-title { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 8px; }
.login-sub { color: var(--text2); font-size: 1rem; margin-bottom: 48px; text-align: center; }
.login-footer { color: var(--text3); font-size: 0.82rem; margin-top: 20px; text-align: center; }
.btn-google {
  display: flex; align-items: center; gap: 12px;
  background: #fff; color: #333;
  border-radius: var(--r); padding: 0 28px;
  font-size: 1rem; font-weight: 600; min-height: 56px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.btn-google svg { width: 24px; height: 24px; flex-shrink: 0; }

/* ===== APP LAYOUT ===== */
#screen-app { padding-bottom: calc(64px + var(--safe-bottom)); }
.app-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--surface1);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; min-height: 56px;
}
.app-logo { font-size: 1.15rem; font-weight: 800; color: var(--blue-lt); }
.header-right { display: flex; align-items: center; gap: 10px; }
.user-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--blue-dk); display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 700; color: #fff; overflow: hidden;
}
.user-avatar img { width: 100%; height: 100%; object-fit: cover; }
.btn-logout {
  background: var(--surface3); color: var(--text2);
  border-radius: 8px; padding: 0 14px; font-size: 0.82rem;
  border: 1px solid var(--border); min-height: 36px;
}

/* ===== BOTTOM NAV ===== */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: var(--surface1);
  border-top: 1px solid var(--border);
  display: flex; padding-bottom: var(--safe-bottom);
  height: calc(64px + var(--safe-bottom));
}
.nav-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 3px; background: none; color: var(--text3);
  font-size: 0.68rem; font-weight: 600; transition: color .15s;
}
.nav-btn .nav-icon { font-size: 1.4rem; }
.nav-btn.active { color: var(--blue-lt); }
.nav-btn.add-btn .nav-icon-add {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--blue); display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: #fff;
  box-shadow: 0 4px 20px rgba(26,115,232,0.55);
  margin-bottom: -4px;
}

/* ===== PAGES ===== */
.page { display: none; padding: 0 0 24px; }
.page.active { display: block; }

/* ===== DASHBOARD ===== */
.dash-hero {
  background: linear-gradient(135deg, #0d1a3a 0%, #1a1040 100%);
  padding: 20px 16px 24px; border-bottom: 1px solid var(--border);
}
.dash-month-nav {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px;
}
.dash-month-nav button {
  background: var(--surface3); color: var(--text2);
  border-radius: 10px; padding: 0 16px; font-size: 1.2rem;
  border: 1px solid var(--border); min-height: 44px; min-width: 44px;
}
.dash-month-label { font-size: 1rem; color: var(--text2); font-weight: 600; }
.dash-balance-label {
  font-size: 0.72rem; color: var(--text3); text-transform: uppercase;
  letter-spacing: 0.06em; margin-bottom: 4px; font-weight: 700;
}
.dash-balance {
  font-size: 2.4rem; font-weight: 900; color: #fff;
  letter-spacing: -1px; margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
.dash-balance.neg { color: var(--red-lt); }
.dash-balance.pos { color: var(--blue-lt); }

.dash-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.dash-card {
  background: rgba(255,255,255,0.06); border-radius: var(--r);
  padding: 14px 16px; border: 1px solid rgba(255,255,255,0.1);
}
.dash-card-label { font-size: 0.72rem; color: var(--text3); margin-bottom: 6px; }
.dash-card-val { font-size: 1.15rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.dash-card.income .dash-card-val { color: var(--blue-lt); }
.dash-card.expense .dash-card-val { color: var(--red-lt); }

.dash-section-title {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text3); padding: 20px 16px 10px; font-weight: 700;
}
.dash-quick { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 0 16px 4px; }
.btn-quick {
  border-radius: var(--r); padding: 0 14px; font-size: 1rem;
  font-weight: 700; display: flex; align-items: center; justify-content: center;
  gap: 8px; min-height: 56px;
}
.btn-quick.income { background: #0d1a3a; color: var(--blue-lt); border: 1.5px solid var(--blue-dk); }
.btn-quick.expense { background: #2b0d0d; color: var(--red-lt); border: 1.5px solid #4a1a1a; }

/* ===== TRANSACTIONS ===== */
.transaction-list { padding: 0 16px; }
.transaction-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 0; border-bottom: 1px solid var(--border);
}
.tx-icon {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
}
.tx-icon.income { background: #0d1a3a; }
.tx-icon.expense { background: #2b0d0d; }
.tx-info { flex: 1; min-width: 0; }
.tx-category { font-size: 0.95rem; font-weight: 600; color: var(--text); }
.tx-meta {
  font-size: 0.75rem; color: var(--text3); margin-top: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.tx-amount { font-size: 1rem; font-weight: 800; flex-shrink: 0; font-variant-numeric: tabular-nums; }
.tx-amount.income { color: var(--blue-lt); }
.tx-amount.expense { color: var(--red-lt); }
.tx-delete {
  background: none; color: var(--text3); font-size: 1rem;
  min-height: 44px; min-width: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px; flex-shrink: 0;
}

/* ===== CHARTS ===== */
.dash-chart-wrap { padding: 0 16px; height: 180px; position: relative; }

/* ===== HISTORY ===== */
.history-filters {
  display: flex; gap: 8px; padding: 12px 16px;
  overflow-x: auto; scrollbar-width: none;
}
.history-filters::-webkit-scrollbar { display: none; }
.filter-select {
  background: var(--surface3); color: var(--text2);
  border: 1.5px solid var(--border); border-radius: 10px;
  padding: 0 12px; font-size: 0.9rem; min-height: 44px;
  -webkit-appearance: none; flex-shrink: 0;
}
.history-summary { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; padding: 0 16px 16px; }
.hist-sum-card {
  background: var(--surface2); border-radius: 12px;
  padding: 12px; border: 1px solid var(--border); text-align: center;
}
.hist-sum-label {
  font-size: 0.68rem; color: var(--text3); margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: 0.04em; font-weight: 700;
}
.hist-sum-val { font-size: 1rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.hist-sum-val.income { color: var(--blue-lt); }
.hist-sum-val.expense { color: var(--red-lt); }
.hist-sum-val.balance { color: var(--text); }

/* ===== STATS ===== */
.stats-period {
  display: flex; gap: 8px; padding: 12px 16px;
  overflow-x: auto; scrollbar-width: none;
}
.stats-period::-webkit-scrollbar { display: none; }
.period-btn {
  background: var(--surface3); color: var(--text2);
  border: 1.5px solid var(--border); border-radius: 10px;
  padding: 0 16px; font-size: 0.9rem; font-weight: 600;
  min-height: 44px; white-space: nowrap; flex-shrink: 0;
  transition: all .15s;
}
.period-btn.active { background: var(--blue); border-color: var(--blue); color: #fff; }

.stats-totals { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 0 16px 16px; }
.stats-total {
  background: var(--surface2); border-radius: var(--r);
  padding: 14px; border: 1px solid var(--border); text-align: center;
}
.stats-total-val {
  font-size: 1.2rem; font-weight: 800; margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.stats-total-label { font-size: 0.72rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.04em; }
.stats-total-val.income { color: var(--blue-lt); }
.stats-total-val.expense { color: var(--red-lt); }

.stats-card {
  margin: 0 16px 16px;
  background: var(--surface2); border-radius: var(--r);
  padding: 16px; border: 1px solid var(--border);
}
.stats-card-title {
  font-size: 0.72rem; color: var(--text3); text-transform: uppercase;
  letter-spacing: 0.06em; font-weight: 700; margin-bottom: 14px;
}
.stats-chart-wrap { position: relative; height: 220px; }
.cat-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; }
.cat-row-name { font-size: 0.88rem; color: var(--text2); flex-shrink: 0; min-width: 90px; }
.cat-row-bar-wrap { flex: 1; background: var(--surface3); border-radius: 4px; height: 8px; overflow: hidden; }
.cat-row-bar { height: 100%; border-radius: 4px; transition: width .3s; min-width: 4px; }
.cat-row-bar.income { background: var(--blue); }
.cat-row-bar.expense { background: var(--red); }
.cat-row-amt { font-size: 0.82rem; font-weight: 700; flex-shrink: 0; font-variant-numeric: tabular-nums; }

/* ===== MODAL ===== */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.8); align-items: flex-end;
}
.modal-overlay.open { display: flex; }
.modal-sheet {
  background: var(--surface1); border-radius: 24px 24px 0 0; width: 100%;
  padding-bottom: calc(16px + var(--safe-bottom));
  overflow-y: auto; max-height: 92vh;
}
.modal-handle {
  width: 40px; height: 4px; background: var(--border);
  margin: 12px auto 8px; border-radius: 2px;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px 16px;
  position: sticky; top: 0; background: var(--surface1); z-index: 1;
  border-bottom: 1px solid var(--border); margin-bottom: 16px;
}
.modal-title { font-size: 1.1rem; font-weight: 800; color: var(--text); }
.btn-close-modal {
  background: var(--surface3); color: var(--text2); border-radius: 50%;
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; border: 1px solid var(--border); flex-shrink: 0;
}

/* Type toggle */
.type-toggle {
  display: grid; grid-template-columns: 1fr 1fr;
  margin: 0 16px 16px; background: var(--surface3); border-radius: 12px; overflow: hidden;
}
.type-toggle button {
  padding: 0; font-size: 1rem; font-weight: 700;
  color: var(--text3); background: none; min-height: 48px;
}
.type-toggle button.active.income { background: #0d1a3a; color: var(--blue-lt); }
.type-toggle button.active.expense { background: #2b0d0d; color: var(--red-lt); }

/* Amount */
.amount-wrap { padding: 0 16px 16px; }
.amount-label {
  font-size: 0.72rem; color: var(--text3); text-transform: uppercase;
  letter-spacing: 0.06em; font-weight: 700; margin-bottom: 10px;
}
.amount-input-row { display: flex; align-items: center; gap: 10px; }
.amount-currency { font-size: 1.8rem; font-weight: 900; color: var(--text3); flex-shrink: 0; }
.amount-input {
  flex: 1; background: var(--surface3); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 14px 16px; font-size: 1.8rem; font-weight: 900;
  color: #fff; text-align: right; font-variant-numeric: tabular-nums; min-height: 56px;
}
.amount-input.income:focus { border-color: var(--blue); }
.amount-input.expense:focus { border-color: var(--red); }

/* Form sections */
.form-section { padding: 0 16px 16px; }
.form-label {
  font-size: 0.72rem; color: var(--text3); text-transform: uppercase;
  letter-spacing: 0.06em; font-weight: 700; margin-bottom: 10px;
}

/* Category grid */
#cat-chips {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(68px, 1fr));
  gap: 8px;
}
.cat-grid-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; min-height: 72px; border-radius: 12px;
  background: var(--surface3); border: 1.5px solid var(--border);
  padding: 8px 4px; transition: all .15s;
}
.cat-grid-icon { font-size: 28px; line-height: 1; }
.cat-grid-label {
  font-size: 0.65rem; font-weight: 600; text-align: center;
  line-height: 1.2; color: var(--text2); word-break: break-word;
}
.cat-grid-btn.selected.income { background: #0d1a3a; border-color: var(--blue); }
.cat-grid-btn.selected.income .cat-grid-label { color: var(--blue-lt); }
.cat-grid-btn.selected.expense { background: #2b0d0d; border-color: var(--red); }
.cat-grid-btn.selected.expense .cat-grid-label { color: var(--red-lt); }
.cat-grid-btn.add-custom { border-style: dashed; }
.cat-grid-btn.add-custom .cat-grid-icon { font-size: 22px; color: var(--text3); }
.cat-grid-btn.add-custom .cat-grid-label { color: var(--text3); }

/* Payment chips */
.chips-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center;
  background: var(--surface3); border: 1.5px solid var(--border); border-radius: 22px;
  padding: 0 16px; font-size: 0.9rem; color: var(--text2);
  min-height: 44px; white-space: nowrap; font-weight: 500;
}
.chip.selected.income { background: #0d1a3a; border-color: var(--blue); color: var(--blue-lt); }
.chip.selected.expense { background: #2b0d0d; border-color: var(--red); color: var(--red-lt); }
.chip.selected.neutral { background: var(--surface2); border-color: var(--blue); color: var(--blue-lt); }

/* Custom category */
.custom-cat-wrap { display: none; gap: 8px; padding-top: 12px; }
.custom-cat-wrap.show { display: flex; }
.custom-cat-input {
  flex: 1; background: var(--surface3); border: 1.5px solid var(--border);
  border-radius: 10px; padding: 0 14px; font-size: 1rem; color: var(--text);
  min-height: 44px;
}
.btn-add-cat {
  background: var(--blue); color: #fff; border-radius: 10px;
  padding: 0 18px; font-size: 0.9rem; font-weight: 700;
  min-height: 44px; flex-shrink: 0;
}

/* Date & Note */
.date-input {
  width: 100%; background: var(--surface3); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 0 14px; font-size: 1rem; color: var(--text);
  min-height: 48px; color-scheme: dark;
}
.note-input {
  width: 100%; background: var(--surface3); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 12px 14px; font-size: 1rem; color: var(--text);
  min-height: 88px; resize: none;
}

/* Submit button */
.btn-submit {
  display: block; width: calc(100% - 32px); margin: 8px 16px 0;
  border-radius: var(--r); padding: 0 16px;
  font-size: 1.1rem; font-weight: 800; color: #fff; min-height: 56px;
}
.btn-submit.income { background: linear-gradient(135deg, #0d47a1, #1a73e8); }
.btn-submit.expense { background: linear-gradient(135deg, #c62828, #f44336); }

/* ===== LOADER & EMPTY STATE ===== */
.loader { display: flex; align-items: center; justify-content: center; padding: 40px; }
.spinner {
  width: 32px; height: 32px; border: 3px solid var(--border);
  border-top-color: var(--blue); border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state { text-align: center; color: var(--text3); padding: 40px 16px; font-size: 0.9rem; }

/* ===== TOAST ===== */
.toast {
  position: fixed; bottom: 88px; left: 50%; transform: translateX(-50%);
  background: var(--surface3); padding: 12px 20px; border-radius: 12px;
  opacity: 0; transition: .3s; z-index: 999; white-space: nowrap; font-size: 0.9rem;
}
.toast.show { opacity: 1; }
.toast.success { border: 1px solid var(--blue); }
.toast.error { border: 1px solid var(--red); }