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

:root {
  --primary:       #2563EB;
  --primary-dark:  #1d4ed8;
  --primary-light: #dbeafe;
  --secondary:     #60A5FA;
  --accent:        #67E8F9;
  --income:        #10b981;
  --income-light:  #d1fae5;
  --expense:       #ef4444;
  --expense-light: #fee2e2;
  --warning:       #f59e0b;
  --warning-light: #fef3c7;
  --bg:            #F8FAFC;
  --surface:       #ffffff;
  --sidebar-bg:    #0F172A;
  --sidebar-text:  #94a3b8;
  --sidebar-active:#ffffff;
  --border:        #e2e8f0;
  --text:          #0f172a;
  --text-muted:    #64748b;
  --text-light:    #94A3B8;
  --radius:        16px;
  --radius-sm:     10px;
  --shadow:        0 1px 4px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
  --shadow-md:     0 4px 12px rgba(15,23,42,.08), 0 2px 4px rgba(15,23,42,.04);
  --shadow-lg:     0 16px 40px rgba(15,23,42,.12), 0 4px 8px rgba(15,23,42,.06);
  --sidebar-w:     240px;
  --topbar-h:      60px;
  --bottom-nav-h:  64px;
}

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

html { font-size: 16px; overflow-x: hidden; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, select, textarea { font: inherit; }

/* ── Layout ── */
#app {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform .25s ease;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  letter-spacing: -.01em;
}

.sidebar-close {
  color: var(--sidebar-text);
  display: none;
  padding: 4px;
}
.sidebar-close:hover { color: #fff; }

.sidebar-nav {
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-size: .875rem;
  font-weight: 500;
  transition: all .15s;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-item.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(37,99,235,.35);
}

/* ── Overlay ── */
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 99;
  backdrop-filter: blur(2px);
}
.overlay.visible { display: block; }

/* ── Main ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ── Topbar ── */
.topbar {
  height: var(--topbar-h);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.menu-btn {
  color: var(--text-muted);
  padding: 6px;
  border-radius: 8px;
  display: none;
}
.menu-btn:hover { background: var(--bg); color: var(--text); }

.topbar-title {
  font-size: 1.05rem;
  font-weight: 700;
  flex: 1;
  letter-spacing: -.01em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Content ── */
.content {
  flex: 1;
  padding: 28px;
  padding-bottom: 28px;
  overflow-y: auto;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* ── Bottom Nav (mobile) ── */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--bottom-nav-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  z-index: 50;
  padding: 0 4px;
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--text-light);
  font-size: .7rem;
  font-weight: 500;
  padding: 8px 4px;
  border-radius: var(--radius-sm);
  transition: color .15s;
}
.bottom-nav-item.active { color: var(--primary); }
.bottom-nav-item svg { flex-shrink: 0; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card-title {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 8px;
}

/* ── Summary Cards ── */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.summary-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.summary-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.summary-card .label {
  font-size: .78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: .01em;
}

.summary-card .value {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -.02em;
}

.summary-card .sub {
  font-size: .76rem;
  color: var(--text-light);
}

.summary-card.income-card .value  { color: var(--income); }
.summary-card.expense-card .value { color: var(--expense); }
.summary-card.balance-positive .value { color: var(--income); }
.summary-card.balance-negative .value { color: var(--expense); }

.summary-card .icon-wrap {
  width: 40px; height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.summary-card.income-card .icon-wrap  { background: var(--income-light);  color: var(--income); }
.summary-card.expense-card .icon-wrap { background: var(--expense-light); color: var(--expense); }
.summary-card.pending-card .icon-wrap { background: var(--warning-light); color: var(--warning); }
.summary-card.balance-positive .icon-wrap,
.summary-card.balance-negative .icon-wrap { background: var(--primary-light); color: var(--primary); }

/* ── Month Selector ── */
.month-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  box-shadow: var(--shadow);
}

.month-selector button {
  width: 28px; height: 28px;
  border-radius: 6px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .15s;
}
.month-selector button:hover { background: var(--bg); color: var(--text); }

.month-selector .month-label {
  font-weight: 600;
  font-size: .9rem;
  min-width: 110px;
  text-align: center;
  letter-spacing: -.01em;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  transition: all .15s;
  white-space: nowrap;
  letter-spacing: -.01em;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37,99,235,.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(37,99,235,.35);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  color: var(--text-muted);
  background: transparent;
}
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-danger {
  background: var(--expense-light);
  color: var(--expense);
}
.btn-danger:hover { background: #fca5a5; }

.btn-sm {
  padding: 5px 10px;
  font-size: .8rem;
}

.btn-icon {
  width: 32px; height: 32px;
  padding: 0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Transaction List ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 12px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.transaction-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.transaction-item {
  background: var(--surface);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  transition: background .1s;
}
.transaction-item:hover { background: var(--bg); }

.transaction-item .t-icon {
  width: 38px; height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.transaction-item .t-info { flex: 1; min-width: 0; }

.transaction-item .t-name {
  font-weight: 600;
  font-size: .9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -.01em;
}

.transaction-item .t-meta {
  font-size: .76rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
  flex-wrap: wrap;
}

.transaction-item .t-amount {
  font-weight: 700;
  font-size: .95rem;
  white-space: nowrap;
  letter-spacing: -.01em;
}

.transaction-item .t-amount.income { color: var(--income); }
.transaction-item .t-amount.expense { color: var(--expense); }

.transaction-item .t-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

/* ── Badges / Status ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .01em;
}

.badge-paid     { background: var(--income-light);   color: var(--income); }
.badge-pending  { background: var(--warning-light);  color: var(--warning); }
.badge-overdue  { background: var(--expense-light);  color: var(--expense); }
.badge-fixed    { background: var(--primary-light);  color: var(--primary); }
.badge-variable { background: #f1f5f9; color: var(--text-muted); }

/* ── Forms / Modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.55);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fade-in .15s ease;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slide-up .2s ease;
  border: 1px solid var(--border);
}

@keyframes slide-up { from { transform: translateY(20px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes slideUp { from { transform: translateX(-50%) translateY(20px); opacity: 0; } to { transform: translateX(-50%) translateY(0); opacity: 1; } }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.modal-title { font-size: 1.05rem; font-weight: 700; letter-spacing: -.01em; }

.modal-body { padding: 20px 24px; }

.modal-footer {
  padding: 0 24px 20px;
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: .01em;
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: .9rem;
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

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

.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.form-check input { width: 16px; height: 16px; accent-color: var(--primary); }
.form-check span { font-size: .875rem; }

/* ── Color Picker ── */
.color-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.color-dot {
  width: 28px; height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s;
}
.color-dot:hover { transform: scale(1.15); }
.color-dot.selected { border-color: var(--text); transform: scale(1.1); }

/* ── Toast ── */
#toast-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-h) + 12px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
  align-items: center;
}

.toast {
  background: var(--text);
  color: #fff;
  padding: 10px 20px;
  border-radius: 24px;
  font-size: .875rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  animation: toast-in .25s ease;
  white-space: nowrap;
  letter-spacing: -.01em;
}
.toast.success { background: var(--income); }
.toast.error   { background: var(--expense); }

@keyframes toast-in {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}
.empty-state svg { margin-bottom: 12px; opacity: .35; }
.empty-state p { font-size: .9rem; }

/* ── Loading ── */
.loading-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px;
}
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Progress Bar ── */
.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 8px;
}
.progress-fill {
  height: 100%;
  border-radius: 99px;
  transition: width .5s cubic-bezier(.4,0,.2,1);
}

/* ── Revenue Goal Card ── */
@keyframes goal-glow-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16,185,129,.4), var(--shadow); }
  50%       { box-shadow: 0 0 0 8px rgba(16,185,129,.0), var(--shadow); }
}
@keyframes goal-bar-shine {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes sparkle-pop {
  0%   { transform: scale(0) rotate(0deg);    opacity: 1; }
  60%  { transform: scale(1.4) rotate(180deg); opacity: 1; }
  100% { transform: scale(0) rotate(360deg);  opacity: 0; }
}
.goal-revenue-card.goal-reached {
  animation: goal-glow-pulse 2s ease-in-out infinite;
}
.goal-bar-celebrate {
  background-image: linear-gradient(90deg,
    transparent 0%, rgba(255,255,255,.45) 40%, transparent 60%,
    var(--income) 60%) !important;
  background-size: 200% 100%;
  animation: goal-bar-shine 1.8s linear infinite;
}
.goal-sparkles {
  position: relative;
  height: 0;
  overflow: visible;
  pointer-events: none;
}
.goal-sparkles::before,
.goal-sparkles::after {
  content: '✦';
  position: absolute;
  font-size: 1.1rem;
  color: var(--income);
  animation: sparkle-pop 1.6s ease-out infinite;
}
.goal-sparkles::before { left: 15%; top: -28px; animation-delay: 0s; }
.goal-sparkles::after  { left: 80%; top: -22px; animation-delay: .8s; }

/* ── Category Tag ── */
.cat-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
}

/* ── Reports ── */
.chart-container {
  position: relative;
  height: 280px;
  margin-top: 8px;
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 20px;
}
.tab {
  flex: 1;
  text-align: center;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
}
.tab.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

/* ── Import ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-light);
}
.drop-zone svg    { margin-bottom: 12px; color: var(--text-light); }
.drop-zone p      { color: var(--text-muted); font-size: .9rem; }
.drop-zone strong { color: var(--primary); }

/* ── FAB ── */
#fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(37,99,235,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 600;
  transition: transform .15s, box-shadow .15s;
}
#fab:hover  { transform: scale(1.08); box-shadow: 0 6px 20px rgba(37,99,235,.55); }
#fab:active { transform: scale(0.95); }

/* ── Responsive ── */

@media (max-width: 1024px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-close { display: flex; }
  .main { margin-left: 0; overflow-x: hidden; }
  .menu-btn { display: flex; }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .content { padding: 20px; }
  .summary-grid { grid-template-columns: repeat(3, 1fr) !important; gap: 14px; }
}

@media (max-width: 640px) {
  .bottom-nav { display: flex; }
  #fab { bottom: calc(var(--bottom-nav-h) + 16px); }

  .content {
    padding: 12px;
    padding-bottom: calc(var(--bottom-nav-h) + 16px);
    overflow-x: hidden;
  }

  .summary-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px;
  }
  .summary-card { padding: 14px; }
  .summary-card .value { font-size: 1.1rem; }
  .summary-card .label { font-size: .73rem; }

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

  .transaction-item { padding: 10px 12px; gap: 8px; align-items: flex-start; }
  .transaction-item .t-icon { margin-top: 2px; }
  .transaction-item .t-name { font-size: .85rem; white-space: normal; line-height: 1.3; }
  .transaction-item .t-meta { gap: 4px; }
  .transaction-item .t-amount { font-size: .85rem; padding-top: 2px; }
  .transaction-item .t-actions { padding-top: 2px; gap: 2px; }
  .transaction-item .t-actions .btn-icon { width: 28px; height: 28px; }

  .modal-backdrop { align-items: flex-end; padding: 0; }
  .modal {
    border-radius: var(--radius) var(--radius) 0 0;
    max-height: 92vh;
    max-width: 100%;
  }

  .month-selector { padding: 4px 6px; gap: 4px; }
  .month-selector .month-label { min-width: 80px; font-size: .8rem; }
  .month-selector button { width: 24px; height: 24px; }

  .topbar { padding: 0 12px; gap: 8px; }
  .topbar-title { font-size: .95rem; }

  .section-header { margin-bottom: 10px; }
  .btn-sm { padding: 5px 10px; font-size: .78rem; }

  .day-nav { padding: 8px 12px; }
  .day-label { font-size: .95rem; }
}

/* ── Day Navigator ── */
.day-nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.day-nav-center {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: background .15s;
  user-select: none;
  cursor: pointer;
}
.day-nav-center:hover { background: var(--bg); }

.day-date-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  border: none;
  background: transparent;
  -webkit-appearance: none;
  z-index: 1;
}

.day-label {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  pointer-events: none;
  letter-spacing: -.01em;
}

.day-sub {
  font-size: .76rem;
  color: var(--text-muted);
  pointer-events: none;
}

/* ── Swipe actions ── */
.item-actions-bar {
  display: flex;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}