/* ============================================
   INKOMEN TRACKER — Design System & Styles
   v2: Auth + Monthly Overview + No Cash
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(23, 32, 52, 0.85);
  --bg-panel: rgba(17, 24, 39, 0.6);
  --bg-input: rgba(30, 41, 59, 0.6);
  --bg-input-focus: rgba(30, 41, 59, 0.9);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-accent: #f1f5f9;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(255, 255, 255, 0.2);

  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-glow: rgba(34, 197, 94, 0.15);

  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-glow: rgba(59, 130, 246, 0.15);

  --red-400: #f87171;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-glow: rgba(239, 68, 68, 0.15);

  --orange-400: #fb923c;
  --orange-500: #f97316;
  --orange-600: #ea580c;
  --orange-glow: rgba(249, 115, 22, 0.15);

  --purple-400: #c084fc;
  --purple-500: #a855f7;
  --purple-glow: rgba(168, 85, 247, 0.15);

  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.15);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow-green: 0 0 20px rgba(34, 197, 94, 0.2);
  --shadow-glow-blue: 0 0 20px rgba(59, 130, 246, 0.2);
  --shadow-glow-red: 0 0 20px rgba(239, 68, 68, 0.2);
  --shadow-glow-orange: 0 0 20px rgba(249, 115, 22, 0.2);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.hidden { display: none !important; }

/* --- Ambient Background --- */
.ambient-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  animation: floatBlob 20s ease-in-out infinite;
}

.blob-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--green-500), transparent);
  top: -200px; left: -100px;
}

.blob-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--blue-500), transparent);
  bottom: -200px; right: -100px;
  animation-delay: -7s;
}

.blob-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--purple-500), transparent);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
}

@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -30px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(30px, 40px) scale(1.05); }
}

/* ==================== AUTH SCREEN ==================== */
.auth-screen {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-container {
  width: 100%;
  max-width: 420px;
  background: var(--bg-panel);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  box-shadow: var(--shadow-lg);
  animation: authFadeIn 0.6s ease-out;
}

@keyframes authFadeIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo-icon-lg {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
}

.auth-title {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green-400), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.auth-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

.auth-error {
  color: var(--red-400);
  font-size: 0.8rem;
  min-height: 22px;
  padding: 2px 0;
}

.btn-full {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 0.95rem;
}

.auth-switch {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 16px;
}

.auth-switch a {
  color: var(--green-400);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.auth-switch a:hover {
  color: var(--green-500);
  text-decoration: underline;
}

/* ==================== APP CONTAINER ==================== */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

/* --- Header --- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 16px;
}

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

.logo-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--green-500), var(--blue-500));
  color: white;
  box-shadow: var(--shadow-glow-green);
}

.logo h1 {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green-400), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-greeting {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* --- Navigation Tabs --- */
.app-nav {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 24px;
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  flex: 1;
  justify-content: center;
}

.nav-tab:hover {
  color: var(--text-secondary);
  background: rgba(30, 41, 59, 0.3);
}

.nav-tab.active {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(59, 130, 246, 0.15));
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-lg);
  border: none;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-normal);
  outline: none;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--green-500), var(--green-600));
  color: white;
  box-shadow: var(--shadow-glow-green);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--green-400), var(--green-500));
  box-shadow: 0 0 30px rgba(34, 197, 94, 0.3);
}

.btn-danger {
  background: linear-gradient(135deg, var(--red-500), var(--red-600));
  color: white;
  box-shadow: var(--shadow-glow-red);
}

.btn-danger:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--red-400), var(--red-500));
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

.btn-ghost:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.btn-icon {
  padding: 8px;
  border: none;
}

/* --- Dashboard Container & Flex Order --- */
#view-dashboard {
  display: flex;
  flex-direction: column;
}

.dashboard {
  order: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.panels {
  order: 2;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.history-section {
  order: 3;
}

.card {
  position: relative;
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(17, 24, 39, 0.9));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  padding: 24px;
  transition: all var(--transition-normal);
  overflow: hidden;
  cursor: pointer;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  opacity: 0.9;
}

.card:hover {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(17, 24, 39, 1));
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.card:active {
  transform: translateY(-1px) scale(0.98);
}

.card-income::before { background: linear-gradient(90deg, var(--green-400), var(--green-600)); }
.card-income:hover { box-shadow: var(--shadow-glow-green); }
.card-income .card-icon { color: var(--green-400); background: var(--green-glow); }

.card-profit::before { background: linear-gradient(90deg, var(--blue-400), var(--blue-600)); }
.card-profit:hover { box-shadow: var(--shadow-glow-blue); }
.card-profit .card-icon { color: var(--blue-400); background: var(--blue-glow); }

.card-expense::before { background: linear-gradient(90deg, var(--red-400), var(--red-600)); }
.card-expense:hover { box-shadow: var(--shadow-glow-red); }
.card-expense .card-icon { color: var(--red-400); background: var(--red-glow); }

.card-deficit::before { background: linear-gradient(90deg, var(--amber-400), var(--amber-500)); }
.card-deficit:hover { box-shadow: 0 0 20px rgba(245,158,11,0.2); }
.card-deficit .card-icon { color: var(--amber-400); background: var(--amber-glow); }

.card-balance::before { background: linear-gradient(90deg, var(--purple-400), var(--purple-500)); }
.card-balance:hover { box-shadow: var(--shadow-glow-blue); }
.card-balance .card-icon { color: var(--purple-400); background: var(--purple-glow); }

.card-icon {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.card-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.card-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.card-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* --- Panels --- */

.panel {
  position: relative;
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.4), rgba(17, 24, 39, 0.6));
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

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

.panel-header { padding: 20px 24px 0; }

.panel-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-header h2 svg { color: var(--text-muted); }

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

/* --- Form Elements --- */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.input {
  width: 100%;
  padding: 16px 20px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-fast);
  outline: none;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.input::placeholder { color: var(--text-muted); }

.input:focus {
  background: var(--bg-input-focus);
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

/* --- Product Selector --- */
.product-selector { display: flex; gap: 10px; }

.product-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  background: var(--bg-input);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-spring);
}

.product-btn:hover {
  border-color: var(--border-hover);
  background: var(--bg-input-focus);
  color: var(--text-primary);
}

.product-btn.active {
  border-color: var(--green-500);
  background: var(--green-glow);
  color: var(--green-400);
  box-shadow: var(--shadow-glow-green);
}

.product-emoji { font-size: 1.2rem; }

.manage-products-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 10px;
  padding: 12px 20px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px dashed var(--blue-400);
  border-radius: var(--radius-md);
  color: var(--blue-400);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.manage-products-bar:hover {
  background: rgba(59, 130, 246, 0.15);
  border-style: solid;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
  transform: translateY(-1px);
}

.manage-products-bar svg {
  flex-shrink: 0;
}

.products-list-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px;
  margin-bottom: 8px;
  transition: all var(--transition-fast);
}

.products-list-row:hover {
  background: rgba(255, 255, 255, 0.08);
}

.products-list-row .product-name {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
}

.btn-danger-text {
  padding: 6px 10px;
  font-size: 0.75rem;
  color: var(--red-400);
}

.btn-danger-text:hover {
  background: var(--red-glow);
  color: var(--red-500);
  border-color: var(--red-400);
}

/* --- Previews --- */
.sale-preview, .expense-preview {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 16px;
}

.preview-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.preview-row + .preview-row { border-top: 1px solid var(--border-subtle); }

.preview-row span:last-child {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.preview-row.accent-green span:last-child { color: var(--green-400); }
.preview-row.accent-blue span:last-child { color: var(--blue-400); }
.preview-row.accent-red span:last-child { color: var(--red-400); }
.preview-row.accent-orange span:last-child { color: var(--orange-400); }

/* --- History --- */
.history-section {
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px;
  margin-bottom: 32px;
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.history-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.history-header h2 svg { color: var(--text-muted); }

.filter-tabs {
  display: flex;
  gap: 6px;
  background: rgba(30, 41, 59, 0.4);
  padding: 4px;
  border-radius: var(--radius-sm);
}

.filter-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover { color: var(--text-secondary); }

.filter-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.transactions-list {
  max-height: 500px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}

.transactions-list::-webkit-scrollbar { width: 6px; }
.transactions-list::-webkit-scrollbar-track { background: transparent; }
.transactions-list::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: 3px;
}

.tx-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  animation: slideIn 0.3s ease-out;
}

.tx-item:hover { background: rgba(30, 41, 59, 0.4); }
.tx-item + .tx-item { border-top: 1px solid var(--border-subtle); }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.tx-icon {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  font-size: 1.2rem;
}

.tx-icon.sale { background: var(--green-glow); color: var(--green-400); }
.tx-icon.expense { background: var(--red-glow); color: var(--red-400); }

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

.tx-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.tx-details {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.tx-amounts { text-align: right; flex-shrink: 0; }

.tx-total {
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.tx-total.positive { color: var(--green-400); }
.tx-total.negative { color: var(--red-400); }

.tx-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.tx-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.tx-item:hover .tx-actions { opacity: 1; }

.tx-edit, .tx-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.tx-edit:hover {
  color: var(--blue-400);
  background: var(--blue-glow);
}

.tx-delete:hover {
  color: var(--red-400);
  background: var(--red-glow);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--text-muted);
  text-align: center;
  gap: 16px;
}

.empty-state p {
  font-size: 0.9rem;
  max-width: 300px;
}

/* --- Flow Section --- */
.flow-section { margin-bottom: 32px; }

.flow-header { margin-bottom: 16px; }

.flow-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.flow-header h2 svg { color: var(--text-muted); }

.flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.flow-card {
  position: relative;
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(17, 24, 39, 0.9));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.flow-card:active {
  transform: translateY(-1px) scale(0.98);
}

.flow-card:hover {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(17, 24, 39, 1));
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.flow-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--accent, var(--border-default));
}

.flow-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.flow-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
}

.dot-green { background: var(--green-400); box-shadow: 0 0 8px var(--green-400); }
.dot-red { background: var(--red-400); box-shadow: 0 0 8px var(--red-400); }
.dot-orange { background: var(--orange-400); box-shadow: 0 0 8px var(--orange-400); }

.flow-card-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.flow-in .flow-card-value { color: var(--green-400); }
.flow-out .flow-card-value { color: var(--red-400); }
.flow-reserve .flow-card-value { color: var(--orange-400); }

.flow-card-detail {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ==================== MONTHLY VIEW ==================== */
.monthly-section {
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.monthly-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
}

.monthly-header h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  min-width: 200px;
  text-align: center;
  background: linear-gradient(135deg, var(--green-400), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Month Summary */
.month-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.month-stat {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: center;
  transition: all var(--transition-normal);
}

.month-stat:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.month-stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.month-stat-value {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.month-stat-value.green { color: var(--green-400); }
.month-stat-value.blue { color: var(--blue-400); }
.month-stat-value.red { color: var(--red-400); }
.month-stat-value.purple { color: var(--purple-400); }

/* Calendar */
.calendar-container {
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px;
  margin-bottom: 24px;
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 8px;
}

.weekday {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-day {
  position: relative;
  background: rgba(30, 41, 59, 0.3);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 8px 8px;
  min-height: 90px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cal-day:hover {
  background: rgba(30, 41, 59, 0.6);
  border-color: var(--border-hover);
  transform: scale(1.02);
}

.cal-day.today {
  border-color: var(--green-500);
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.15);
}

.cal-day.empty {
  background: transparent;
  cursor: default;
  min-height: auto;
}

.cal-day.empty:hover {
  transform: none;
  border-color: transparent;
}

.cal-day.has-data {
  background: rgba(34, 197, 94, 0.05);
}

.cal-day.has-data:hover {
  background: rgba(34, 197, 94, 0.1);
}

.cal-day-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.cal-day.today .cal-day-number {
  color: var(--green-400);
}

.cal-day-stats {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cal-stat {
  font-size: 0.6rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cal-stat.income { color: var(--green-400); }
.cal-stat.profit { color: var(--blue-400); }
.cal-stat.expense { color: var(--red-400); }
.cal-stat.products { color: var(--purple-400); }

/* Day Detail */
.day-detail {
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px;
  margin-top: 16px;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.day-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.day-detail-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.day-detail-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.day-stat-card {
  background: rgba(30, 41, 59, 0.4);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.day-stat-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.day-stat-value {
  font-size: 1.1rem;
  font-weight: 800;
}

.day-stat-value.green { color: var(--green-400); }
.day-stat-value.blue { color: var(--blue-400); }
.day-stat-value.red { color: var(--red-400); }

.day-detail-transactions h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: 28px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-spring);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.modal-body { margin-bottom: 24px; }

.modal-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* --- Loading Overlay --- */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 9999;
  transition: opacity 0.3s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-default);
  border-top-color: var(--green-400);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Toast --- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: white;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.4s ease-out, toastOut 0.3s 2.7s ease-in forwards;
  max-width: 360px;
}

.toast.success { background: linear-gradient(135deg, var(--green-600), var(--green-500)); }
.toast.error { background: linear-gradient(135deg, var(--red-600), var(--red-500)); }
.toast.info { background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); }
.toast.warning { background: linear-gradient(135deg, var(--orange-600), var(--orange-500)); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px) scale(0.95); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to { opacity: 0; transform: translateX(40px) scale(0.95); }
}

/* --- Footer --- */
.app-footer {
  text-align: center;
  padding: 24px;
  margin-top: 24px;
}

.app-footer p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Value update animation */
.value-updated {
  animation: valueFlash 0.5s ease-out;
}

@keyframes valueFlash {
  0% { transform: scale(1); }
  30% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

/* --- Modals specific classes --- */
.modal-edit {
  max-width: 500px;
}

.modal-products {
  max-width: 520px;
}

/* --- Responsive Layouts --- */
@media (max-width: 1024px) {
  .dashboard {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .app-container { padding: 16px; }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 0 12px;
  }

  /* Mobile Flex Order: Panels first, then Dashboard */
  .dashboard, .flow-grid { order: 2; margin-bottom: 32px; }
  .panels { order: 1; margin-bottom: 24px; }
  
  .dashboard, .flow-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 12px;
    padding-bottom: 12px;
    margin-right: -16px; /* edge to edge effect */
    padding-right: 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
  }
  
  .dashboard::-webkit-scrollbar, .flow-grid::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
  }

  .card, .flow-card {
    flex: 0 0 82%; /* Card takes 82% of screen, so the next one peeks */
    scroll-snap-align: center;
    padding: 20px;
  }
  
  .card-value { font-size: 1.6rem; }

  .panels { grid-template-columns: 1fr; }
  .panel {
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-md);
  }
  .form-row { grid-template-columns: 1fr; }

  .history-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .filter-tabs {
    width: 100%;
    overflow-x: auto;
  }

  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .month-summary { grid-template-columns: repeat(2, 1fr); }

  .cal-day {
    min-height: 70px;
    padding: 6px 4px;
  }

  .cal-day-number { font-size: 0.7rem; }
  .cal-stat { font-size: 0.5rem; }

  .monthly-header h2 { font-size: 1.1rem; min-width: 160px; }

  .toast-container {
    bottom: 12px;
    right: 12px;
    left: 12px;
  }

  .toast { max-width: 100%; }

  .tx-item {
    gap: 12px;
    padding: 16px 0; /* edge to edge feeling */
    border-radius: 0;
  }
  
  .tx-info { font-size: 0.95em; }
}

@media (max-width: 480px) {
  .dashboard { grid-template-columns: 1fr; }
  .logo h1 { font-size: 1.2rem; }
  
  .app-nav {
    flex-wrap: wrap;
  }
  .nav-tab { padding: 8px 10px; font-size: 0.85rem; }
  .nav-tab svg { display: none; }
  
  .month-summary { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr; }
  
  .modal { padding: 20px; }

  .tx-item {
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    padding-bottom: 48px;
    gap: 6px;
  }

  .tx-amounts {
    text-align: left;
    margin-top: 4px;
  }

  .tx-actions {
    position: absolute;
    bottom: 12px;
    right: 12px;
    opacity: 1; /* Always visible on mobile */
  }

  .modal-actions {
    flex-direction: column-reverse;
  }
  
  .modal-actions .btn {
    width: 100%;
  }

  .products-list-row {
    flex-direction: column;
    align-items: stretch;
  }
}