:root {
  --bg: #0a0a0f;
  --card: rgba(255, 255, 255, 0.04);
  --card-border: rgba(0, 255, 255, 0.2);
  --text: #e8f6ff;
  --muted: #8ea3b0;
  --accent: #00ffff; /* cyan default */
  --accent-2: #ff007f; /* magenta */
  --danger: #ff3b6b;
  --good: #00ff7f;
  --shadow: 0 10px 30px rgba(0, 255, 255, 0.08), 0 2px 8px rgba(0, 0, 0, 0.6);
  color-scheme: dark; /* ensure dark native controls */
}

/* Slight theme shift when [data-accent='magenta'] */
[data-accent='magenta'] {
  --accent: var(--accent-2);
  --card-border: rgba(255, 0, 127, 0.22);
  --shadow: 0 10px 30px rgba(255, 0, 127, 0.08), 0 2px 8px rgba(0, 0, 0, 0.6);
}

/* Additional accents */
[data-accent='lime'] {
  --accent: #00ff7f;
  --card-border: rgba(0, 255, 127, 0.28);
  --shadow: 0 10px 30px rgba(0, 255, 127, 0.10), 0 2px 8px rgba(0, 0, 0, 0.6);
}
[data-accent='purple'] {
  --accent: #9d4dff;
  --card-border: rgba(157, 77, 255, 0.28);
  --shadow: 0 10px 30px rgba(157, 77, 255, 0.10), 0 2px 8px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% -10%, rgba(0, 255, 255, 0.08), transparent),
              radial-gradient(1000px 600px at 120% 10%, rgba(255, 0, 127, 0.08), transparent),
              var(--bg);
  overflow-x: hidden;
}

.app-header {
  position: sticky;
  top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(10,10,15,0.85), rgba(10,10,15,0.6));
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon { width: 36px; height: 36px; filter: drop-shadow(0 0 8px var(--accent)); }
.brand-text h1 { margin: 0; font-size: 18px; letter-spacing: 0.3px; }
.brand-text .tag { font-size: 12px; color: var(--muted); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.select {
  appearance: none; -webkit-appearance: none;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--card-border);
  padding: 10px 12px;
  border-radius: 12px;
  outline: none;
  transition: border-color 200ms, box-shadow 200ms, transform 120ms;
  color-scheme: dark; /* dark dropdown menu on supported UAs */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20'%3E%3Cpath fill='%23a7c4d3' d='M5.5 7.5l4.5 4.5 4.5-4.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; padding-right: 34px;
}
.select:focus { border-color: var(--accent); box-shadow: 0 0 0 6px rgba(0,255,255,0.08); }
.select:hover { transform: translateY(-1px); }
.select option { background-color: #0a0a0f; color: var(--text); }
.select::-ms-expand { display: none; }

.icon-btn {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--card-border);
  padding: 10px 12px; border-radius: 12px; cursor: pointer;
  transition: transform 120ms ease, box-shadow 200ms ease, border-color 200ms;
}
.icon-btn:hover { transform: translateY(-1px) scale(1.02); border-color: var(--accent); box-shadow: 0 0 20px rgba(0,255,255,0.12); }
.icon-btn:active { transform: translateY(0) scale(0.98); }

.btn {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--card-border);
  color: var(--text); padding: 12px 14px; border-radius: 14px;
  cursor: pointer; font-weight: 600; letter-spacing: 0.2px;
  box-shadow: var(--shadow); transition: transform 120ms, border-color 200ms, box-shadow 200ms;
}
.btn.primary { border-color: rgba(0,255,255,0.35); text-shadow: 0 0 10px rgba(0,255,255,0.35); }
.btn.danger { border-color: rgba(255,59,107,0.35); text-shadow: 0 0 10px rgba(255,59,107,0.35); }
.btn.ghost { background: transparent; }
.btn:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 8px 30px rgba(0,255,255,0.15); }
.btn:active { transform: translateY(0) scale(0.98); }

.container { padding: 18px 16px 80px; max-width: 1100px; margin: 0 auto; }

.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--card-border);
  border-radius: 16px; padding: 16px; box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.stat .label { color: var(--muted); font-size: 12px; }
.stat .value { font-size: 22px; font-weight: 700; margin-top: 8px; }

.ring { display: grid; place-items: center; }
.ring-wrap { position: relative; width: 140px; height: 140px; }
.progress-ring { width: 140px; height: 140px; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: rgba(255,255,255,0.08); stroke-width: 12; }
.ring-fg { fill: none; stroke: var(--accent); stroke-width: 12; stroke-linecap: round;
  stroke-dasharray: 339.292; stroke-dashoffset: 339.292; transition: stroke-dashoffset 800ms ease; }
.ring-center { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.ring-center .pct { font-size: 24px; font-weight: 700; }
.ring-center .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }


.panel { margin-top: 16px; }
.panel h2 { margin: 0 0 10px; font-size: 16px; letter-spacing: 0.2px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }

.add-panel .inputs { display: grid; grid-template-columns: 1fr; gap: 12px; }
.input-wrap { display: grid; gap: 8px; }
label { color: var(--muted); font-size: 12px; }
input[type="number"] {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--card-border);
  padding: 12px 14px; border-radius: 12px; outline: none;
  transition: border-color 200ms, box-shadow 200ms, transform 120ms;
}
input[type="number"]::placeholder { color: #6f8290; }
input[type="number"]:focus { border-color: var(--accent); box-shadow: 0 0 0 6px rgba(0,255,255,0.08); }
.actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.add-feedback { min-height: 18px; font-size: 12px; color: var(--muted); margin-top: 6px; }

.chart-panel canvas { width: 100%; }

.history-panel .months-list { display: grid; gap: 10px; margin-top: 8px; }
.month-card { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; padding: 14px; border-radius: 14px; border: 1px solid var(--card-border);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02)); box-shadow: var(--shadow); opacity: 0; transform: translateY(6px); animation: slideIn 420ms ease forwards; }
.month-title { font-weight: 600; }
.month-stats { display: flex; gap: 12px; font-size: 13px; color: var(--muted); }
.badge { padding: 4px 8px; border-radius: 999px; border: 1px solid var(--card-border); background: rgba(255,255,255,0.02); }
.badge.good { color: var(--good); border-color: rgba(0,255,127,0.35); text-shadow: 0 0 10px rgba(0,255,127,0.25); }
.badge.bad { color: var(--danger); border-color: rgba(255,59,107,0.35); text-shadow: 0 0 10px rgba(255,59,107,0.25); }

@keyframes slideIn { to { opacity: 1; transform: translateY(0); } }

.app-footer { color: var(--muted); font-size: 12px; text-align: center; padding: 20px; }

/* Hover glow for interactive list items */
.month-card:hover { border-color: var(--accent); box-shadow: 0 8px 30px rgba(0,255,255,0.12); }

/* Responsive layout */
@media (max-width: 980px) {
  .summary { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .summary { grid-template-columns: 1fr 1fr; }
  .ring { grid-column: 1 / -1; }
  .header-actions { gap: 8px; }
  .export-group { display: none; }
}

/* Success pulse for haptic-like feedback */
.pulse {
  animation: pulse 420ms ease;
}
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

/* Modal */
.modal-overlay { position: fixed; inset: 0; display: grid; place-items: center; background: rgba(0,0,0,0.6); backdrop-filter: blur(6px); z-index: 100; animation: fadeIn 160ms ease; }
.modal-overlay[hidden] { display: none !important; }
.modal { width: min(420px, 92vw); }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-body { display: grid; gap: 12px; }
.row { display: grid; gap: 8px; }
.muted { color: var(--muted); font-size: 12px; }
.seg { display: inline-flex; gap: 10px; }
.seg-item { background: var(--card); border: 1px solid var(--card-border); padding: 8px 10px; border-radius: 10px; cursor: pointer; }
.seg-item input { margin-right: 6px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.hint { color: var(--muted); font-size: 11px; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }