:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --ink: #23211c;
  --muted: #7a7568;
  --line: #e2ddd2;
  --accent: #b5402c;      /* trend red */
  --accent-soft: #f3ded9;
  --good: #2e7d32;        /* below trend / losing */
  --bad: #c62828;         /* above trend / gaining */
  --focus: #2c5f8a;
}

* { box-sizing: border-box; }

/* The hidden attribute must beat ID/class display rules below. */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.8rem 1.2rem;
  background: var(--card);
  border-bottom: 2px solid var(--accent);
}

header h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
header h1::before { content: "⚖️ "; }

#user-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
}
#nav-email { color: var(--muted); }
#user-nav a { color: var(--focus); }

.unit-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.unit-toggle button {
  border: 0;
  background: var(--card);
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  font: inherit;
  color: var(--muted);
}
.unit-toggle button.active {
  background: var(--accent);
  color: #fff;
}

button { font: inherit; }

#logout-btn, #import-btn {
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  color: var(--muted);
}
#logout-btn:hover, #import-btn:hover { color: var(--ink); }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.2rem;
}

/* ------------------------------------------------ auth */

.auth-card {
  max-width: 24rem;
  margin: 8vh auto 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.auth-tabs {
  display: flex;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}
.auth-tabs button {
  flex: 1;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--muted);
}
.auth-tabs button.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.auth-card label {
  display: block;
  margin-bottom: 0.9rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.auth-card input, .auth-card select {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.5rem 0.6rem;
  font: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.auth-card input:focus, .auth-card select:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

#auth-submit {
  width: 100%;
  padding: 0.6rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
#auth-submit:disabled { opacity: 0.6; }

.error { color: var(--bad); font-size: 0.85rem; }

.auth-blurb {
  margin: 1.2rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ------------------------------------------------ month bar */

.month-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}
.month-bar h2 {
  margin: 0;
  font-size: 1.15rem;
  min-width: 11rem;
  text-align: center;
}
.month-bar button {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  color: var(--ink);
}
.month-bar button:hover { border-color: var(--accent); }
#today-btn { margin-left: auto; }

/* ------------------------------------------------ chart */

#chart-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.6rem;
  margin-bottom: 0.8rem;
}
#chart-wrap svg { display: block; width: 100%; height: auto; }
.chart-empty {
  text-align: center;
  color: var(--muted);
  padding: 2.5rem 1rem;
  font-size: 0.9rem;
}

/* ------------------------------------------------ stats */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.8rem;
}
.stat .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.stat .value { font-size: 1.15rem; font-weight: 650; }
.stat .value.good { color: var(--good); }
.stat .value.bad { color: var(--bad); }

/* ------------------------------------------------ table */

#log-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
#log-table th, #log-table td {
  padding: 0.32rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-variant-numeric: tabular-nums;
}
#log-table th {
  background: #efece4;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
#log-table .num, #log-table td input { text-align: right; }
#log-table tr:last-child td { border-bottom: 0; }

#log-table tr.weekend { background: #faf8f3; }
#log-table tr.today { background: var(--accent-soft); }
#log-table tr.future { color: var(--muted); }

#log-table td.daynum { width: 2.2rem; color: var(--muted); }
#log-table td.dayname { width: 2.6rem; font-size: 0.8rem; color: var(--muted); }

#log-table td.comment input {
  width: 100%;
  min-width: 6rem;
  text-align: left;
  border-color: transparent;
  background: transparent;
}
#log-table td.comment input:hover:not(:disabled),
#log-table td.comment input:focus { border-color: var(--line); background: #fff; }

#log-table td input {
  width: 6.2rem;
  padding: 0.22rem 0.4rem;
  font: inherit;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
}
#log-table td input:focus { outline: 2px solid var(--focus); outline-offset: 1px; }
#log-table td input:disabled { background: transparent; border-color: transparent; }
#log-table td input.saving { border-color: var(--focus); }
#log-table td input.save-error { border-color: var(--bad); background: #fdeeee; }

td.var.good { color: var(--good); }
td.var.bad { color: var(--bad); }

footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.2rem 2rem;
  font-size: 0.75rem;
  color: var(--muted);
}
footer a { color: inherit; }

@media (max-width: 560px) {
  main { padding: 0.7rem; }
  #log-table th, #log-table td { padding: 0.3rem 0.45rem; }
  #log-table td input { width: 4.8rem; }
  #log-table td.comment input { min-width: 4rem; }
  #log-table td.dayname { display: none; }
  #log-table th:nth-child(2) { display: none; }
  .month-bar h2 { min-width: 0; flex: 1; }
}