:root {
  --bg0: #0e1218;
  --bg1: #161c26;
  --bg2: #1e2733;
  --line: #334155;
  --text: #e8eef7;
  --muted: #9aa8bc;
  --accent: #3db89a;
  --accent-ink: #06241c;
  --danger: #f0a8a8;
  --danger-bg: #3a1d1d;
  --warn: #e6c27a;
  --warn-bg: #3a3018;
  --plus: #8fd6b4;
  --minus: #f0b4b4;
  --focus: #7dd3fc;
  --radius: 10px;
  --font: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a2a33 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #1a2230 0%, transparent 50%),
    var(--bg0);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.45;
  min-height: 100%;
}

body {
  overflow-x: hidden;
  max-width: 100vw;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--focus);
  color: #041018;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.site-header, .main, .site-footer {
  width: min(720px, 100%);
  margin-inline: auto;
  padding-inline: 1rem;
}

.site-header {
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
}

.brand {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0.15rem 0 0;
  color: var(--muted);
}

.status-region {
  width: min(720px, 100%);
  margin: 0.5rem auto;
  padding-inline: 1rem;
  min-height: 1.25rem;
  color: var(--muted);
}
.status-region[data-tone="error"] { color: var(--danger); }
.status-region[data-tone="ok"] { color: var(--plus); }

.panel {
  background: color-mix(in srgb, var(--bg1) 92%, black);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}

h1 {
  font-size: 1.25rem;
  margin: 0 0 0.75rem;
}

.h2 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.75rem;
}

.field { margin-bottom: 1rem; }
.field label, legend {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="time"],
select {
  width: 100%;
  max-width: 100%;
  background: var(--bg0);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  font: inherit;
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
.nav-btn:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.hint {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.field-error {
  margin: 0.35rem 0 0;
  color: var(--danger);
  background: var(--danger-bg);
  border-left: 3px solid var(--danger);
  padding: 0.35rem 0.5rem;
  font-size: 0.92rem;
}

.btn {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--accent) 50%, white);
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 700;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  cursor: pointer;
}
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.btn-secondary {
  background: var(--bg2);
  color: var(--text);
  border-color: var(--line);
  font-weight: 600;
}

.weekday-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 0.75rem;
}
.weekday-grid label, .check {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-weight: 500;
}

.app-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}
.nav-btn {
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  cursor: pointer;
}
.nav-btn.is-active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.nav-btn-muted { color: var(--muted); }

.month-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.month-label {
  margin: 0;
  font-weight: 700;
  text-align: center;
  flex: 1;
}

.day-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.day-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem 0.75rem;
  width: 100%;
  max-width: 100%;
  text-align: left;
  background: var(--bg0);
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem;
  font: inherit;
  cursor: pointer;
}
.day-item.is-today {
  border-color: var(--accent);
}
.day-item.is-warn {
  border-left: 4px solid var(--warn);
}
.day-item .meta {
  color: var(--muted);
  font-size: 0.9rem;
}
.day-item .suggest,
.day-item .times,
.suggest-full {
  font-family: var(--mono);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.badge {
  display: inline-block;
  margin: 0;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.85rem;
}

.row-between {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 1rem 0;
}
.metrics > div {
  background: var(--bg0);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem;
}
.metrics dt {
  color: var(--muted);
  font-size: 0.9rem;
}
.metrics dd {
  margin: 0.25rem 0 0;
  font-family: var(--mono);
  font-size: 1.15rem;
}

.delta-text[data-sign="plus"] { color: var(--plus); }
.delta-text[data-sign="minus"] { color: var(--minus); }
.delta-text[data-sign="zero"] { color: var(--text); }
.delta-sign-word {
  display: inline-block;
  margin-left: 0.4rem;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
}

.warning {
  background: var(--warn-bg);
  border: 1px solid var(--warn);
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.plain-list {
  margin: 0;
  padding-left: 1.1rem;
}
.plain-list li { margin-bottom: 0.35rem; }

.inline-form {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.site-footer {
  color: var(--muted);
  font-size: 0.85rem;
  padding-bottom: 2rem;
}

@media (min-width: 640px) {
  .weekday-grid { grid-template-columns: repeat(4, 1fr); }
  .metrics { grid-template-columns: repeat(3, 1fr); }
  .inline-form {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

/* 320px: kein Horizontal-Overflow */
@media (max-width: 360px) {
  .site-header, .main, .site-footer, .status-region {
    padding-inline: 0.65rem;
  }
  .panel { padding: 0.75rem; }
  .nav-btn { padding: 0.4rem 0.65rem; font-size: 0.92rem; }
}