:root {
  --bg: #061612;
  --bg-2: #0a201a;
  --bg-elev: #0e2a23;
  --bg-card: #11362c;
  --border: #1f4d40;
  --border-strong: #2a6957;
  --text: #ecfdf5;
  --text-dim: #8db8a8;
  --text-mute: #5d8779;
  --accent: #34d399;
  --accent-2: #6ee7b7;
  --accent-3: #a7f3d0;
  --accent-deep: #047857;
  --ok: #4ade80;
  --danger: #f87171;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 6px 16px rgba(0, 0, 0, 0.3);
  --glow: 0 0 32px rgba(52, 211, 153, 0.35);
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  background-image:
    radial-gradient(1200px 600px at -10% -10%, rgba(16, 185, 129, 0.18), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(110, 231, 183, 0.12), transparent 60%),
    radial-gradient(900px 600px at 50% 110%, rgba(4, 120, 87, 0.18), transparent 60%);
  background-attachment: fixed;
}

body {
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.app {
  max-width: 560px;
  margin: 0 auto;
  padding: 18px 18px 100px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 4px 24px;
}

.topbar .logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.topbar h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.015em;
  background: linear-gradient(135deg, #ecfdf5, #a7f3d0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.topbar .bolt {
  width: 32px;
  height: 32px;
  display: inline-block;
  filter: drop-shadow(0 4px 10px rgba(52, 211, 153, 0.45));
}

.icon-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
  backdrop-filter: blur(8px);
}

.icon-btn:hover {
  background: rgba(52, 211, 153, 0.08);
  border-color: var(--border-strong);
}

.icon-btn:active { transform: scale(0.96); }

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.005)) var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(110, 231, 183, 0.25), transparent);
  pointer-events: none;
}

.card h2 {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.005em;
}

.card h2 .muted {
  color: var(--text-mute);
  font-weight: 400;
  font-size: 12px;
  margin-left: 6px;
}

.row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.row label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.row input,
.row select {
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 16px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  font-family: inherit;
  -webkit-appearance: none;
}

.row input:focus,
.row select:focus {
  border-color: var(--accent);
  background: var(--bg-elev);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.12);
}

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

.row .hint {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.45;
}

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #10b981, #34d399);
  color: #052e1e;
  border: none;
  border-radius: 14px;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  transition: transform 0.05s, box-shadow 0.2s, filter 0.15s;
  box-shadow: 0 10px 24px -8px rgba(16, 185, 129, 0.55),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
  letter-spacing: -0.005em;
}

.btn:hover { filter: brightness(1.05); }

.btn:active {
  transform: scale(0.985);
  box-shadow: 0 6px 14px -6px rgba(16, 185, 129, 0.5),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border: 1px solid var(--border-strong);
  box-shadow: none;
}

.btn.secondary:hover {
  background: rgba(52, 211, 153, 0.06);
  border-color: var(--accent);
}

.btn.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.3);
  box-shadow: none;
}

.btn.danger:hover {
  background: rgba(248, 113, 113, 0.08);
  border-color: var(--danger);
}

.btn.ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px dashed var(--border);
  box-shadow: none;
}

.result {
  text-align: center;
  padding: 12px 0 8px;
}

.result .total {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--accent-2);
  margin: 8px 0 6px;
  text-shadow: 0 0 40px rgba(52, 211, 153, 0.45);
  font-variant-numeric: tabular-nums;
}

.result .sub {
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 0.01em;
}

.breakdown {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.breakdown .line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 0;
  font-size: 14px;
}

.breakdown .line .lbl {
  color: var(--text-dim);
}

.breakdown .line .val {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.breakdown .line.total-line {
  border-top: 1px dashed var(--border);
  margin-top: 8px;
  padding-top: 14px;
  font-weight: 700;
  font-size: 16px;
}

.breakdown .line.total-line .lbl { color: var(--text); }
.breakdown .line.total-line .val { color: var(--accent-2); }

.history-empty {
  text-align: center;
  color: var(--text-mute);
  padding: 22px 0;
  font-size: 14px;
}

.history-list {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
}

.history-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.history-list li:last-child { border-bottom: none; }

.history-list .meta {
  color: var(--text-mute);
  font-size: 12px;
  margin-top: 2px;
}

.history-list .amount {
  color: var(--accent-2);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.del-btn {
  background: transparent;
  border: none;
  color: var(--text-mute);
  cursor: pointer;
  font-size: 18px;
  padding: 6px 10px;
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}

.del-btn:hover {
  color: var(--danger);
  background: rgba(248, 113, 113, 0.08);
}

.chart {
  width: 100%;
  height: 200px;
  display: block;
  margin-top: 8px;
}

.section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  margin: 22px 4px 10px;
  font-weight: 600;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%) translateY(12px);
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 100;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

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

.banner {
  background: linear-gradient(135deg, rgba(4, 120, 87, 0.4), rgba(16, 185, 129, 0.18));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.banner::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(110, 231, 183, 0.2), transparent 60%);
  pointer-events: none;
}

.banner .ico {
  font-size: 28px;
  filter: drop-shadow(0 0 8px rgba(52, 211, 153, 0.5));
}

.banner .txt {
  font-size: 13px;
  line-height: 1.45;
  color: var(--text);
  position: relative;
  z-index: 1;
}

.banner .txt strong {
  display: block;
  margin-bottom: 3px;
  color: var(--accent-2);
  font-size: 14px;
}

.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.tabs button {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 11px;
  border-radius: 10px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}

.tabs button.active {
  background: var(--bg-elev);
  color: var(--accent-2);
  border-color: var(--accent);
}

.admin-tabs {
  display: flex;
  gap: 4px;
  margin: 0 0 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px;
  position: sticky;
  top: 8px;
  z-index: 10;
  backdrop-filter: blur(8px);
}

.admin-tabs button {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 11px 8px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: -0.005em;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
}

.admin-tabs button.active {
  background: linear-gradient(135deg, #10b981, #34d399);
  color: #052e1e;
  box-shadow: 0 6px 16px -8px rgba(16, 185, 129, 0.6),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeIn 0.2s ease-out; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.balance-card {
  background: linear-gradient(135deg, rgba(4, 120, 87, 0.45), rgba(16, 185, 129, 0.15)) var(--bg-card);
  border: 1px solid var(--border-strong);
  position: relative;
  overflow: hidden;
}

.balance-card::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(110, 231, 183, 0.18), transparent 60%);
  pointer-events: none;
}

.balance-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 9px 0;
  font-size: 14px;
  position: relative;
  z-index: 1;
}

.balance-row .lbl { color: var(--text-dim); }
.balance-row .val {
  color: var(--text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.balance-row.total-line {
  border-top: 1px dashed var(--border-strong);
  margin-top: 8px;
  padding-top: 14px;
  font-size: 16px;
}

.balance-row.total-line .lbl { color: var(--text); font-weight: 600; }
.balance-row .val.ok { color: var(--accent-2); }
.balance-row .val.pending {
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
  text-shadow: 0 0 24px rgba(52, 211, 153, 0.4);
}
.balance-row .val.paid {
  color: var(--ok);
  font-size: 20px;
  font-weight: 800;
}

.reading-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

.reading-card .reading-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.reading-card .reading-total {
  color: var(--accent-2);
  font-weight: 700;
  font-size: 17px;
  font-variant-numeric: tabular-nums;
}

.reading-card .reading-date {
  color: var(--text-dim);
  font-size: 12px;
  margin-top: 2px;
}

.reading-card .reading-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

.photo-input-wrap {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-photo {
  background: var(--bg-2);
  border: 1px dashed var(--border-strong);
  color: var(--text-dim);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.btn-photo:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: rgba(52, 211, 153, 0.05);
}

.photo-preview {
  position: relative;
  display: inline-block;
}

.photo-preview img {
  width: 56px;
  height: 56px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid var(--border-strong);
  display: block;
  cursor: zoom-in;
}

.photo-preview .remove {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--danger);
  border: 2px solid var(--bg-card);
  color: white;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.reading-photo {
  display: block;
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-top: 8px;
  cursor: zoom-in;
  transition: transform 0.15s, border-color 0.15s;
}

.reading-photo:hover {
  border-color: var(--accent);
  transform: scale(1.01);
}

.photo-tag {
  margin-top: 14px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.photo-tag-hint {
  color: var(--text-mute);
  font-weight: 400;
  font-size: 11px;
}

.no-photo {
  margin-top: 12px;
  padding: 10px 14px;
  color: var(--text-mute);
  font-size: 12px;
  font-style: italic;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border);
  border-radius: 10px;
  text-align: center;
}

.photo-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
  animation: fadeIn 0.15s ease-out;
}

.photo-modal.show { display: flex; }

.photo-modal img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.photo-modal .close {
  position: absolute;
  top: 22px;
  right: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: white;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  backdrop-filter: blur(6px);
}

.compact-add {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
}

.footer {
  text-align: center;
  color: var(--text-mute);
  font-size: 12px;
  margin-top: 20px;
  line-height: 1.5;
}

.footer strong { color: var(--text-dim); }

.login-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 32px;
}

.login-hero {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo {
  width: 84px;
  height: 84px;
  display: inline-block;
  margin-bottom: 16px;
  filter: drop-shadow(0 8px 24px rgba(52, 211, 153, 0.4));
}

.login-title {
  margin: 0 0 6px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ecfdf5 0%, #6ee7b7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-sub {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
}

.login-err {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  min-height: 18px;
  text-align: center;
  font-weight: 500;
}

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

.pass-wrap input {
  padding-right: 48px;
  flex: 1;
}

.pass-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 17px;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}

.pass-toggle:hover {
  color: var(--accent-2);
  background: rgba(52, 211, 153, 0.08);
}

.pass-toggle.active {
  color: var(--accent);
}

.user-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  border: 1px solid var(--accent-deep);
  background: rgba(4, 120, 87, 0.2);
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 600;
}

@keyframes pulse-glow {
  0%, 100% { text-shadow: 0 0 40px rgba(52, 211, 153, 0.45); }
  50% { text-shadow: 0 0 56px rgba(52, 211, 153, 0.65); }
}

.result .total {
  animation: pulse-glow 3s ease-in-out infinite;
}