/* ============================================================
   eXpenceTracker – Finance Green Theme
   ============================================================ */
/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ---------- Tokens ---------- */
:root {
  --clr-bg:        #060d0a;
  --clr-surface:   #0b1610;
  --clr-surface2:  #0f1d15;
  --clr-border:    rgba(0,200,140,.2);
  --clr-border2:   rgba(255,255,255,.06);
  --clr-accent:    #00c896;
  --clr-accent2:   #34d399;
  --clr-accent3:   #2dd4bf;
  --clr-danger:    #f87171;
  --clr-success:   #10b981;
  --clr-text:      #e2f0eb;
  --clr-muted:     #527a6a;
  --radius:        18px;
  --radius-sm:     12px;
  --shadow:        0 12px 40px rgba(0,0,0,.75);
  --shadow-accent: 0 0 40px rgba(0,200,140,.07);
  --t:             .22s cubic-bezier(.4,0,.2,1);
}

/* ---------- Light mode ---------- */
[data-theme="light"] {
  --clr-bg:        #f0faf6;
  --clr-surface:   #fffffB;
  --clr-surface2:  #f4fbf8;
  --clr-border:    rgba(0,160,110,.18);
  --clr-border2:   rgba(0,0,0,.07);
  --clr-accent:    #00a878;
  --clr-accent2:   #059669;
  --clr-accent3:   #0d9488;
  --clr-danger:    #dc2626;
  --clr-success:   #16a34a;
  --clr-text:      #0d2118;
  --clr-muted:     #5a7a6a;
  --shadow:        0 4px 24px rgba(0,0,0,.08);
  --shadow-accent: 0 0 30px rgba(0,160,110,.06);
}

[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 55% 40% at 15% 10%,  rgba(0,168,120,.1)  0%, transparent 70%),
    radial-gradient(ellipse 45% 35% at 85% 90%,  rgba(13,148,136,.08) 0%, transparent 70%),
    radial-gradient(ellipse 30% 25% at 75% 15%,  rgba(5,150,105,.06)  0%, transparent 65%);
}

[data-theme="light"] body::after {
  background-image:
    linear-gradient(rgba(0,168,120,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,168,120,.04) 1px, transparent 1px);
}

[data-theme="light"] section::before {
  background: linear-gradient(135deg,
    rgba(0,168,120,.2) 0%,
    rgba(13,148,136,.08) 50%,
    rgba(0,168,120,.03) 100%);
}

[data-theme="light"] .app-header::before {
  background: linear-gradient(180deg, rgba(0,168,120,.08) 0%, transparent 75%);
}

[data-theme="light"] .toast {
  background: rgba(255,255,255,.96);
  color: var(--clr-text);
}

[data-theme="light"] .form-group select option {
  background: #ffffff;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,200,140,.2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,200,140,.45); }

/* ---------- Accessibility ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ---------- Body ---------- */
body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100vh;
  padding-bottom: 5rem;
  overflow-x: hidden;
  position: relative;
}

/* Subtle mesh background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 40% at 15% 10%,  rgba(0,200,140,.09)  0%, transparent 70%),
    radial-gradient(ellipse 45% 35% at 85% 90%,  rgba(45,212,191,.07) 0%, transparent 70%),
    radial-gradient(ellipse 30% 25% at 75% 15%,  rgba(52,211,153,.05) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* Floating grid lines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,140,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,140,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--clr-border2);
  background: var(--clr-surface);
  color: var(--clr-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--t), color var(--t), background var(--t), box-shadow var(--t);
  box-shadow: var(--shadow);
}

.tax-icon-toggle, .expense-icon-toggle {
  position: absolute;
  top: 1.25rem; 
  left: 1.25rem;
  width: 38px; height: 38px; 
  border-radius: 50%;
  border: 1px solid var(--clr-border2);
  background: var(--clr-surface); 
  color: var(--clr-muted);
  cursor: pointer;
  display: flex; align-items:center; justify-content: center; 
  transition: border-color var(--t), color var(--t), background var(--t), 
  box-shadow var(--t); 
  box-shadow: var(--shadow); 
}


.tax-icon-toogle:hover, .expense-icon-toggle:hover {
  border-color: var(--clr-accent); 
  color: var(--clr-accent); 
  box-shadow: 0 0 16px rgba(0, 200, 140, .2);

}

.theme-toggle:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  box-shadow: 0 0 16px rgba(0,200,140,.2);
}

/* dark mode → show moon, hide sun */
.icon-sun  { display: none; }
.icon-moon { display: block; }

[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* ---------- Header ---------- */
.app-header {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3.5rem 1rem 2.8rem;
  overflow: hidden;
}

.app-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,200,140,.08) 0%, transparent 75%);
  pointer-events: none;
}

.app-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 12%; right: 12%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(0,200,140,.5),
    rgba(45,212,191,.4),
    transparent);
}

@keyframes logoGlow {
  0%, 100% { filter: drop-shadow(0 0 10px rgba(0,200,140,.35)); }
  50%       { filter: drop-shadow(0 0 22px rgba(0,200,140,.6)); }
}

.app-header h1 {
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -2px;
  background: linear-gradient(135deg, #d4f5e9 20%, var(--clr-accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  animation: logoGlow 5s ease-in-out infinite;
}

.app-header h1 span {
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  margin-top: .6rem;
  color: var(--clr-muted);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Header stats pill */
.header-stats {
  display: inline-flex;
  align-items: center;
  margin-top: 1.4rem;
  background: rgba(0,200,140,.05);
  border: 1px solid rgba(0,200,140,.15);
  border-radius: 999px;
  padding: .45rem 1.25rem;
  backdrop-filter: blur(12px);
}

.header-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .08rem;
  padding: 0 1.1rem;
}

.header-stat + .header-stat {
  border-left: 1px solid rgba(255,255,255,.07);
}

.header-stat-value {
  font-size: .95rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.header-stat-label {
  font-size: .58rem;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 600;
}

/* ---------- Main layout ---------- */
.app-main {
  position: relative;
  z-index: 1;
  max-width: 660px;
  margin: 0 auto;
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: .9rem;
}

/* ---------- Cards ---------- */
section {
  position: relative;
  background: var(--clr-surface);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: var(--shadow), var(--shadow-accent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: box-shadow var(--t);
  animation: fadeUp .4s cubic-bezier(.25,.8,.25,1) both;
}

section::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius) + 1px);
  background: linear-gradient(135deg,
    rgba(0,200,140,.22) 0%,
    rgba(45,212,191,.1) 50%,
    rgba(0,200,140,.04) 100%);
  z-index: -1;
  opacity: .65;
  transition: opacity var(--t);
}

section:hover::before { opacity: 1; }
section:hover { box-shadow: var(--shadow), 0 0 50px rgba(0,200,140,.14); }

.app-main section:nth-child(1) { animation-delay: .04s; }
.app-main section:nth-child(2) { animation-delay: .09s; }
.app-main section:nth-child(3) { animation-delay: .14s; }
.app-main section:nth-child(4) { animation-delay: .19s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

section h2 {
  font-size: .66rem;
  font-weight: 800;
  color: var(--clr-accent2);
  margin-bottom: 1.2rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  display: flex;
  align-items: center;
  gap: .5rem;
}

section h2::before {
  content: '';
  display: inline-block;
  width: 3px; height: 13px;
  background: linear-gradient(180deg, var(--clr-accent), var(--clr-accent3));
  border-radius: 99px;
  flex-shrink: 0;
}

/* ---------- Search ---------- */
.section-search { padding: .8rem 1.15rem; }

.search-wrap { position: relative; display: flex; align-items: center; }

.search-icon {
  position: absolute;
  left: 1rem;
  color: var(--clr-muted);
  width: 15px; height: 15px;
  pointer-events: none;
}

#searchInput {
  width: 100%;
  padding: .85rem 1rem .85rem 2.75rem;
  border-radius: 999px;
  border: 1.5px solid var(--clr-border2);
  background: var(--clr-surface2);
  color: var(--clr-text);
  font-size: .92rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
}

#searchInput::placeholder { color: var(--clr-muted); }

#searchInput:focus {
  border-color: var(--clr-accent);
  background: rgba(0,200,140,.04);
  box-shadow: 0 0 0 3px rgba(0,200,140,.14), 0 0 24px rgba(0,200,140,.1);
}

/* ---------- Form ---------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .8rem;
}

@media (max-width: 480px) { .form-grid { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: .42rem; }

.form-group label {
  font-size: .64rem;
  font-weight: 700;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.form-group input,
.form-group select {
  padding: .78rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clr-border2);
  background: var(--clr-surface2);
  color: var(--clr-text);
  font-size: .92rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='%23527a6a' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .85rem center;
  padding-right: 2.4rem;
  cursor: pointer;
}

.form-group select option { background: var(--clr-surface2); }

#billCategory {
  border-left: 3px solid var(--cat-color, var(--clr-accent));
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--clr-accent);
  background: rgba(0,200,140,.04);
  box-shadow: 0 0 0 3px rgba(0,200,140,.13);
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(.4) sepia(1) saturate(4) hue-rotate(100deg);
  cursor: pointer;
  opacity: .7;
}

/* ---------- List controls (sort) ---------- */
.list-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: .75rem;
  flex-wrap: wrap;
}

.list-controls {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
}

.sort-group {
  display: flex;
  gap: .3rem;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border2);
  border-radius: 999px;
  padding: .2rem;
}

.btn-sort {
  display: flex;
  align-items: center;
  gap: .3rem;
  padding: .28rem .65rem;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--clr-muted);
  font-size: .68rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--t), color var(--t);
  white-space: nowrap;
}

.btn-sort:hover { color: var(--clr-text); }

.btn-sort.active {
  background: linear-gradient(135deg, var(--clr-accent), #059669);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,200,140,.3);
}

/* ---------- Submit button ---------- */
.btn { cursor: pointer; font-weight: 700; transition: all var(--t); font-family: inherit; }

.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  width: 100%;
  margin-top: 1.2rem;
  padding: .95rem;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, var(--clr-accent) 0%, #059669 100%);
  color: #fff;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .03em;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,200,140,.35);
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.16), transparent);
  opacity: 0;
  transition: opacity var(--t);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0,200,140,.5);
}

.btn-primary:hover::after { opacity: 1; }
.btn-primary:active { transform: translateY(1px); box-shadow: 0 2px 8px rgba(0,200,140,.3); }

/* ---------- List ---------- */
.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.badge {
  background: linear-gradient(135deg, var(--clr-accent), #059669);
  color: #fff;
  font-size: .66rem;
  font-weight: 800;
  padding: .2rem .68rem;
  border-radius: 999px;
  min-width: 26px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0,200,140,.4);
}

.bill-list { list-style: none; display: flex; flex-direction: column; gap: .45rem; }

/* ---------- Empty state ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  padding: 2.5rem 0 1.75rem;
  color: var(--clr-muted);
}

.empty-icon { opacity: .25; color: var(--clr-muted); }
.empty-text { font-size: .84rem; font-style: italic; }

/* ---------- Bill item ---------- */
.bill-item {
  display: flex;
  align-items: center;
  gap: .85rem;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border2);
  border-left: 4px solid var(--item-accent, var(--clr-accent));
  border-radius: var(--radius-sm);
  padding: .82rem .95rem;
  animation: slideIn .28s cubic-bezier(.25,.8,.25,1) both;
  transition: background var(--t), box-shadow var(--t), transform var(--t);
}

.bill-item:hover {
  background: color-mix(in srgb, var(--item-accent, var(--clr-accent)) 5%, var(--clr-surface2));
  box-shadow:
    0 4px 20px rgba(0,0,0,.3),
    0 0 0 1px color-mix(in srgb, var(--item-accent, var(--clr-accent)) 28%, transparent);
  transform: translateX(3px);
}

.bill-icon {
  width: 42px; height: 42px;
  border-radius: 11px;
  background: color-mix(in srgb, var(--item-accent, var(--clr-accent)) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--item-accent, var(--clr-accent)) 35%, transparent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform var(--t), background var(--t);
}

.bill-icon svg { color: var(--item-accent, var(--clr-accent)); }

.bill-item:hover .bill-icon {
  transform: scale(1.1) rotate(-4deg);
  background: color-mix(in srgb, var(--item-accent, var(--clr-accent)) 26%, transparent);
}

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

.bill-name {
  font-weight: 700;
  font-size: .92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--clr-text);
}

.bill-meta {
  font-size: .7rem;
  color: var(--clr-muted);
  margin-top: .22rem;
  display: flex;
  align-items: center;
  gap: .38rem;
  flex-wrap: wrap;
}

.bill-meta-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--clr-muted);
  opacity: .4;
  flex-shrink: 0;
}

/* Amount chip */
.bill-amount {
  font-weight: 800;
  font-size: .88rem;
  color: var(--item-accent, var(--clr-accent));
  white-space: nowrap;
  padding: .28rem .7rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--item-accent, var(--clr-accent)) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--item-accent, var(--clr-accent)) 25%, transparent);
  flex-shrink: 0;
}

.bill-delete {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-muted);
  width: 28px; height: 28px;
  border-radius: 7px;
  font-size: .88rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--t), color var(--t), background var(--t), transform var(--t);
}

.bill-item:hover .bill-delete { opacity: 1; }

.bill-delete:hover {
  color: var(--clr-danger);
  background: rgba(248,113,113,.14);
  transform: scale(1.15);
}

/* ---------- Total section ---------- */
.section-total {
  text-align: center;
  padding: 2.4rem 1.5rem 1.8rem;
  background: linear-gradient(135deg, rgba(0,200,140,.06) 0%, rgba(45,212,191,.04) 100%);
  border: 1px solid rgba(0,200,140,.18);
  overflow: hidden;
}

/* Ring 1 */
.section-total::before {
  content: '';
  position: absolute;
  width: 280px; height: 280px;
  border-radius: 50%;
  border: 1px solid rgba(0,200,140,.08);
  top: 0; left: 50%;
  transform: translateX(-50%) translateY(-55%);
  pointer-events: none;
  animation: ringPulse 6s ease-in-out infinite;
}

/* Ring 2 */
.section-total::after {
  content: '';
  position: absolute;
  width: 170px; height: 170px;
  border-radius: 50%;
  border: 1px solid rgba(0,200,140,.14);
  top: 0; left: 50%;
  transform: translateX(-50%) translateY(-42%);
  pointer-events: none;
  animation: ringPulse 6s ease-in-out infinite .7s;
}

@keyframes ringPulse {
  0%, 100% { opacity: .5; transform: translateX(-50%) translateY(-55%) scale(1); }
  50%       { opacity: .9; transform: translateX(-50%) translateY(-55%) scale(1.04); }
}

.total-label {
  position: relative;
  font-size: .63rem;
  text-transform: uppercase;
  letter-spacing: .2em;
  color: var(--clr-muted);
  font-weight: 700;
}

.total-amount {
  position: relative;
  font-size: clamp(2.3rem, 8vw, 3.8rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent2) 55%, #6ee7b7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: .55rem 0 .4rem;
  letter-spacing: -2px;
  filter: drop-shadow(0 0 18px rgba(0,200,140,.4));
}

.total-hint {
  position: relative;
  font-size: .72rem;
  color: var(--clr-muted);
}

/* Spending bars */
.bars-divider {
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,200,140,.12), transparent);
  margin: 1.3rem 0 1rem;
}

.spending-bar-wrap { position: relative; display: flex; flex-direction: column; gap: .55rem; }

.spending-bar-row { display: flex; align-items: center; gap: .7rem; font-size: .71rem; }

.spending-bar-label {
  width: 84px; flex-shrink: 0;
  text-transform: capitalize;
  font-weight: 600;
  color: var(--clr-text);
  opacity: .7;
}

.spending-bar-track {
  flex: 1;
  height: 5px;
  background: rgba(255,255,255,.05);
  border-radius: 99px;
  overflow: hidden;
}

.spending-bar-fill {
  height: 100%;
  border-radius: 99px;
  background: var(--item-accent, var(--clr-accent));
  width: 0%;
  transition: width .65s cubic-bezier(.25,.8,.25,1);
  box-shadow: 0 0 8px color-mix(in srgb, var(--item-accent, var(--clr-accent)) 50%, transparent);
}

.spending-bar-value {
  width: 55px; text-align: right; flex-shrink: 0;
  font-weight: 700;
  color: var(--clr-text);
  opacity: .75;
  font-size: .7rem;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: rgba(11,22,16,.94);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  padding: .72rem 1.4rem;
  border-radius: 999px;
  font-size: .83rem;
  font-weight: 600;
  font-family: inherit;
  box-shadow: 0 8px 32px rgba(0,0,0,.5), 0 0 24px rgba(0,200,140,.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s cubic-bezier(.25,.8,.25,1), transform .3s cubic-bezier(.25,.8,.25,1);
  z-index: 999;
  white-space: nowrap;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Animations ---------- */
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px) scale(.97); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes slideOut {
  to { opacity: 0; transform: translateX(60px) scale(.94); max-height: 0; padding: 0; margin: 0; }
}

.bill-item.removing {
  animation: slideOut .28s cubic-bezier(.4,0,1,1) forwards;
  overflow: hidden; pointer-events: none;
}

.bill-item.hidden { display: none; }

@keyframes shake {
  0%,100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

.shake { animation: shake .38s cubic-bezier(.36,.07,.19,.97) both; }

.ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.2);
  transform: scale(0);
  animation: rippleAnim .55s linear;
  pointer-events: none;
}

@keyframes rippleAnim { to { transform: scale(4); opacity: 0; } }

@keyframes totalPop {
  0%,100% { transform: scale(1); }
  40%     { transform: scale(1.05); }
}

.total-pop { animation: totalPop .36s cubic-bezier(.25,.8,.25,1); }

/* ---------- Upload zone ---------- */
.upload-zone {
  margin-top: .85rem;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1rem;
  border: 1.5px dashed var(--clr-border);
  border-radius: var(--radius-sm);
  background: rgba(0,200,140,.03);
  color: var(--clr-muted);
  cursor: pointer;
  transition: border-color var(--t), background var(--t), color var(--t);
  user-select: none;
  outline: none;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--clr-accent);
  background: rgba(0,200,140,.07);
  color: var(--clr-accent);
}

.upload-zone-text { display: flex; flex-direction: column; gap: .1rem; }
.upload-zone-text span { font-size: .83rem; font-weight: 600; }
.upload-zone-text small { font-size: .7rem; opacity: .7; }

.upload-preview {
  display: none;
  align-items: center;
  gap: .75rem;
  margin-top: .85rem;
  padding: .6rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border2);
  background: var(--clr-surface2);
}

.upload-preview.visible { display: flex; }

.upload-preview-thumb {
  width: 40px; height: 40px;
  border-radius: 7px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--clr-border2);
}

.upload-preview-icon {
  width: 40px; height: 40px;
  border-radius: 7px;
  background: rgba(0,200,140,.12);
  border: 1px solid rgba(0,200,140,.22);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-accent);
  flex-shrink: 0;
}

.upload-preview-name {
  flex: 1;
  font-size: .78rem;
  font-weight: 600;
  color: var(--clr-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-remove {
  background: none; border: none; cursor: pointer;
  color: var(--clr-muted);
  width: 26px; height: 26px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: color var(--t), background var(--t);
}

.upload-remove:hover { color: var(--clr-danger); background: rgba(248,113,113,.12); }

/* ---------- Payment badge ---------- */
.pay-badge {
  display: inline-flex;
  align-items: center;
  font-size: .62rem;
  font-weight: 700;
  padding: .1rem .45rem;
  border-radius: 999px;
  letter-spacing: .02em;
}

.pay-badge--full {
  background: rgba(16,185,129,.15);
  color: var(--clr-success);
  border: 1px solid rgba(16,185,129,.25);
}

.pay-badge--partial {
  background: rgba(251,191,36,.1);
  color: #f59e0b;
  border: 1px solid rgba(251,191,36,.22);
}

/* ---------- Payment edit button ---------- */
.bill-pay {
  background: none; border: none; cursor: pointer;
  color: var(--clr-muted);
  width: 28px; height: 28px;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--t), color var(--t), background var(--t), transform var(--t);
}

.bill-item:hover .bill-pay { opacity: 1; }
.bill-pay:hover { color: var(--clr-accent); background: rgba(0,200,140,.12); transform: scale(1.15); }

/* ---------- Payment modal ---------- */
.payment-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.payment-modal.open { display: flex; }

.payment-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.payment-modal-box {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  width: min(420px, 100%);
  box-shadow: 0 24px 64px rgba(0,0,0,.65);
  animation: fadeUp .25s cubic-bezier(.25,.8,.25,1);
}

.payment-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.2rem;
  border-bottom: 1px solid var(--clr-border2);
  gap: .5rem;
}

.payment-modal-title {
  font-size: .88rem;
  font-weight: 700;
  color: var(--clr-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.payment-modal-body { padding: 1.2rem; }

.payment-bill-total {
  font-size: .8rem;
  color: var(--clr-muted);
  margin-bottom: 1.1rem;
  font-weight: 600;
}

.payment-options {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-bottom: .9rem;
}

.payment-option {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clr-border2);
  background: var(--clr-surface2);
  cursor: pointer;
  transition: border-color var(--t), background var(--t);
  font-size: .88rem;
  font-weight: 600;
  color: var(--clr-text);
}

.payment-option:has(input:checked) {
  border-color: var(--clr-accent);
  background: rgba(0,200,140,.06);
}

.payment-option input[type="radio"] { accent-color: var(--clr-accent); }

.payment-partial-wrap {
  padding: .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border2);
  background: var(--clr-surface2);
  margin-bottom: .1rem;
}

.payment-remaining {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: .65rem;
  font-size: .8rem;
  color: var(--clr-muted);
  font-weight: 600;
}

.payment-remaining-value {
  font-weight: 800;
  font-size: .88rem;
  color: #f59e0b;
}

/* ---------- Bill receipt button ---------- */
.bill-receipt {
  background: none; border: none; cursor: pointer;
  color: var(--clr-accent);
  width: 28px; height: 28px;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--t), background var(--t);
}

.bill-item:hover .bill-receipt { opacity: .7; }
.bill-receipt:hover { opacity: 1 !important; background: rgba(0,200,140,.12); }

/* ---------- Receipt modal ---------- */
.receipt-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.receipt-modal.open { display: flex; }

.receipt-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.receipt-modal-box {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  width: min(520px, 100%);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0,0,0,.65);
  animation: fadeUp .25s cubic-bezier(.25,.8,.25,1);
}

.receipt-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.2rem;
  border-bottom: 1px solid var(--clr-border2);
  gap: .5rem;
}

.receipt-modal-title {
  font-size: .88rem;
  font-weight: 700;
  color: var(--clr-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.receipt-modal-close {
  background: none; border: none; cursor: pointer;
  color: var(--clr-muted);
  width: 30px; height: 30px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: color var(--t), background var(--t);
}

.receipt-modal-close:hover { color: var(--clr-danger); background: rgba(248,113,113,.12); }

.receipt-modal-body {
  flex: 1;
  overflow: auto;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.receipt-modal-body img {
  max-width: 100%;
  max-height: 70vh;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.receipt-modal-body iframe {
  width: 100%;
  height: 68vh;
  border: none;
  border-radius: var(--radius-sm);
}

/* ---------- Footer ---------- */
.app-footer {
  position: relative;
  z-index: 1;
  max-width: 660px;
  margin: 1.5rem auto 0;
  padding: 1.25rem 1rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-actions {
  display: flex;
  gap: .65rem;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .6rem 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--clr-border2);
  background: var(--clr-surface);
  color: var(--clr-muted);
  font-size: .8rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--t), color var(--t), background var(--t), box-shadow var(--t), transform var(--t);
}

.btn-action:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: rgba(0,200,140,.06);
  box-shadow: 0 0 16px rgba(0,200,140,.15);
  transform: translateY(-1px);
}

.btn-action--danger:hover {
  border-color: var(--clr-danger);
  color: var(--clr-danger);
  background: rgba(248,113,113,.06);
  box-shadow: 0 0 16px rgba(248,113,113,.15);
}

.footer-copy {
  font-size: .68rem;
  color: var(--clr-muted);
  opacity: .5;
  letter-spacing: .06em;
}
.footer-copy a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Mobile ---------- */
@media (max-width: 540px) {
  .bill-item {
    gap: .55rem;
    padding: .72rem .8rem;
  }

  .bill-icon {
    width: 36px;
    height: 36px;
    border-radius: 9px;
  }

  /* on touch screens there's no hover — always show all action buttons */
  .bill-pay,
  .bill-receipt,
  .bill-delete {
    opacity: 1;
  }
}

@media (max-width: 380px) {
  .btn-sort {
    padding: .25rem .5rem;
    font-size: .62rem;
    gap: .18rem;
  }

  .btn-sort svg {
    display: none;
  }
}

/* ---------- Tabs ---------- */
.tab-nav {
  display: flex;
  gap: .3rem;
  margin-bottom: 1rem;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border2);
  border-radius: 999px;
  padding: .25rem;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .42rem .75rem;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--clr-muted);
  font-size: .73rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--t), color var(--t);
  white-space: nowrap;
}

.tab-btn:hover:not(.active) { color: var(--clr-text); }

.tab-btn.active {
  background: linear-gradient(135deg, var(--clr-accent), #059669);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,200,140,.3);
}

.tab-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 .35rem;
  border-radius: 999px;
  background: rgba(255,255,255,.22);
  font-size: .6rem;
  font-weight: 800;
}

.tab-btn:not(.active) .tab-count {
  background: var(--clr-border2);
  color: var(--clr-muted);
}

@media (max-width: 480px) {
  .tab-nav {
    flex-wrap: wrap;
  }

  .tab-btn {
    flex: 1 1 calc(50% - .15rem);
    font-size: .68rem;
    padding: .42rem .5rem;
  }

  .tab-btn:last-child {
    flex: 1 1 100%;
  }
}

/* ---------- Category header ---------- */
.bill-category-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem .4rem .18rem;
  margin-top: .25rem;
  list-style: none;
}

.bill-category-header:first-child { margin-top: 0; padding-top: .1rem; }

.bill-category-header-icon {
  flex-shrink: 0;
  opacity: .65;
  display: flex;
  align-items: center;
}

.bill-category-header-name {
  flex: 1;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .13em;
  color: var(--clr-muted);
}

.bill-category-header-count {
  font-size: .6rem;
  font-weight: 800;
  color: var(--clr-muted);
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border2);
  border-radius: 999px;
  padding: .1rem .44rem;
  min-width: 20px;
  text-align: center;
}

.bill-category-header.hidden { display: none; }

/* ---------- Paid bill item ---------- */
.bill-item--paid {
  --item-accent: #6b7280;
  opacity: .68;
}

.bill-item--paid:hover { opacity: 1; }

/* ---------- Reactivate button ---------- */
.bill-reactivate {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-muted);
  width: 28px; height: 28px;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  opacity: 1;
  transition: color var(--t), background var(--t), transform var(--t);
}

.bill-reactivate:hover {
  color: var(--clr-accent);
  background: rgba(0,200,140,.12);
  transform: scale(1.15);
}

/* ---------- Edit fields in modal ---------- */
.edit-fields-grid { margin-bottom: .75rem; }

.edit-receipt-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .55rem .75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border2);
  background: var(--clr-surface2);
}

.edit-receipt-info {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .76rem;
  color: var(--clr-muted);
  font-weight: 500;
  min-width: 0;
  overflow: hidden;
}

.edit-receipt-info span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.edit-receipt-btns {
  display: flex;
  gap: .35rem;
  flex-shrink: 0;
}

.btn-edit-receipt {
  display: inline-flex;
  align-items: center;
  gap: .28rem;
  padding: .28rem .65rem;
  border-radius: 999px;
  border: 1px solid var(--clr-border2);
  background: transparent;
  color: var(--clr-muted);
  font-size: .69rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--t), color var(--t), background var(--t);
  white-space: nowrap;
  text-decoration: none;
}

.btn-edit-receipt:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: rgba(0,200,140,.07);
}

.btn-edit-receipt--danger:hover {
  border-color: var(--clr-danger);
  color: var(--clr-danger);
  background: rgba(248,113,113,.07);
}

/* ---------- Modal section divider ---------- */
.modal-section-divider {
  height: 1px;
  background: var(--clr-border2);
  margin: .95rem 0 .85rem;
}

/* ============================================================
   Tax info page
   ============================================================ */

.section-meta {
  font-size: .65rem;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-weight: 600;
  margin: -.7rem 0 1.2rem;
}

/* ---------- Info banner ---------- */
.info-banner {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border2);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.2rem;
}

.info-banner h3 {
  font-size: .76rem;
  font-weight: 800;
  color: var(--clr-text);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .6rem;
}

.info-banner p {
  font-size: .84rem;
  line-height: 1.65;
  color: var(--clr-muted);
}

.legend-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  margin-top: 1rem;
  padding-top: .9rem;
  border-top: 1px solid var(--clr-border2);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: .8rem;
  color: var(--clr-text);
}

/* ---------- Nachweis badges ---------- */
.nachweis-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .62rem;
  font-weight: 800;
  padding: .22rem .58rem;
  border-radius: 999px;
  letter-spacing: .04em;
  white-space: nowrap;
  flex-shrink: 0;
}

.nachweis-badge--ja {
  background: rgba(16,185,129,.15);
  color: var(--clr-success);
  border: 1px solid rgba(16,185,129,.25);
}

.nachweis-badge--nein {
  background: var(--clr-surface2);
  color: var(--clr-muted);
  border: 1px solid var(--clr-border2);
}

.nachweis-badge--pauschal {
  background: rgba(45,212,191,.12);
  color: var(--clr-accent3);
  border: 1px solid rgba(45,212,191,.28);
}

.nachweis-badge--mixed {
  background: rgba(251,191,36,.1);
  color: #f59e0b;
  border: 1px solid rgba(251,191,36,.22);
}

.nachweis-badge--auto {
  background: rgba(56,189,248,.12);
  color: #38bdf8;
  border: 1px solid rgba(56,189,248,.26);
}

/* ---------- Category tabs ---------- */
.tax-tab-nav {
  flex-wrap: wrap;
  gap: .35rem;
  border-radius: var(--radius-sm);
}

.tax-tab-nav .tab-btn {
  flex: 1 1 calc(33.333% - .35rem);
}

@media (max-width: 480px) {
  .tax-tab-nav .tab-btn {
    flex: 1 1 calc(50% - .35rem);
    font-size: .68rem;
    padding: .42rem .5rem;
    gap: .3rem;
  }
}

/* ---------- Tax list ---------- */
.tax-list {
  display: none;
  list-style: none;
  flex-direction: column;
  gap: .5rem;
}

.tax-list.active { display: flex; }

.tax-item {
  display: flex;
  gap: .85rem;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border2);
  border-left: 4px solid var(--item-accent, var(--clr-accent));
  border-radius: var(--radius-sm);
  padding: .9rem 1rem;
  animation: slideIn .28s cubic-bezier(.25,.8,.25,1) both;
  transition: background var(--t), box-shadow var(--t), transform var(--t);
}

.tax-item:hover {
  background: color-mix(in srgb, var(--item-accent, var(--clr-accent)) 5%, var(--clr-surface2));
  box-shadow:
    0 4px 20px rgba(0,0,0,.3),
    0 0 0 1px color-mix(in srgb, var(--item-accent, var(--clr-accent)) 28%, transparent);
  transform: translateX(3px);
}

.tax-item.hidden { display: none; }

.tax-item-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--item-accent, var(--clr-accent)) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--item-accent, var(--clr-accent)) 35%, transparent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--item-accent, var(--clr-accent));
  font-size: .85rem;
}

.tax-item-body { flex: 1; min-width: 0; }

.tax-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  margin-bottom: .35rem;
}

.tax-item-name {
  font-weight: 700;
  font-size: .88rem;
  color: var(--clr-text);
}

.tax-item-detail {
  font-size: .8rem;
  line-height: 1.55;
  color: var(--clr-muted);
}

.tax-item-note {
  font-size: .72rem;
  line-height: 1.55;
  color: var(--clr-muted);
  opacity: .75;
  font-style: italic;
  margin-top: .3rem;
}

.tax-sub-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-top: .55rem;
}

.tax-sub-list li {
  font-size: .68rem;
  font-weight: 600;
  color: var(--clr-text);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border2);
  border-radius: 999px;
  padding: .22rem .62rem;
}