:root {
  --bg: #0e1613;
  --card: #131e19;
  --border: #22332a;
  --text: #e8f1ec;
  --text-dim: #9db3a8;
  --text-faint: #5c7b6b;
  --accent: #7fb896;
  --accent-hover: #8fc7a5;
  --heater: #e08a4f;
  --topup: #e0c94f;
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  color-scheme: dark;
}

.mono, input, textarea, button, select {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--text);
}

input::placeholder, textarea::placeholder { color: #4f6a5c; }

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.site-nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  transition: all 0.15s ease;
}
.site-nav a:hover { color: var(--text); border-color: #3a4f43; }
.site-nav a.active { color: var(--accent); border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); display: inline-block; }

h1 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: #f4faf7;
}

.save-status {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  margin-top: 0.2rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.9rem;
}
.stat-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.stat-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.3rem;
  font-weight: 600;
}
.stat-unit {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-weight: 400;
  margin-left: 0.2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  margin-bottom: 1.75rem;
}

.card-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.3rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

input[type="datetime-local"],
input[type="number"],
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid #2c3f34;
  border-radius: 0.5rem;
  padding: 0.55rem 0.7rem;
  font-size: 0.9rem;
  resize: none;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.topup-check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: none;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
  cursor: pointer;
}
.topup-check-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--topup);
  cursor: pointer;
}
.topup-check-label:has(input:checked) { color: var(--topup); }

.tags-label { margin-top: 0.25rem; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.72rem;
  font-weight: 500;
  border: 1px solid #2c3f34;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.15s ease;
}
.tag-btn.active {
  border-color: var(--tag-color, var(--accent));
  color: var(--tag-color, var(--accent));
  background: color-mix(in srgb, var(--tag-color, var(--accent)) 15%, transparent);
}

.form-error {
  color: var(--heater);
  font-size: 0.75rem;
  margin-bottom: 0.5rem;
  min-height: 1em;
}

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 0.5rem;
  padding: 0.65rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.log-entry {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid #1e2c25;
}
.log-entry:last-child { border-bottom: none; }

.log-date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
}
.log-meta {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.15rem;
}
.log-meta .rate { color: var(--accent); margin-left: 0.4rem; }
.log-meta .topup-note { color: var(--topup); margin-left: 0.4rem; }

.log-entry.is-topup { border-left: 2px solid var(--topup); padding-left: 0.6rem; margin-left: -0.6rem; }

.log-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.35rem;
}
.log-tag {
  font-size: 0.6rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--tag-color, var(--accent)) 15%, transparent);
  color: var(--tag-color, var(--accent));
}

.log-comment {
  font-size: 0.75rem;
  color: #c7d6ce;
  font-style: italic;
  margin-top: 0.35rem;
}

.delete-btn {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  padding: 0.2rem;
  flex-shrink: 0;
}
.delete-btn:hover { color: var(--heater); }

footer {
  text-align: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
  margin-top: 1.5rem;
}

@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  h1 { font-size: 1.6rem; }
}