:root {
  --bg: #f4f5f6;
  --bg-panel: #ffffff;
  --bg-panel-raised: #f0f1f3;
  --bg-input: #ffffff;
  --border: #dcdfe3;
  --text: #1c1c1c;
  --text-muted: #6b7075;
  --accent: #2f93b5;
  --accent-light: #1f7690;
  --accent-hover: #45a8ca;
  --accent-dark: #195c72;
  --text-on-accent: #ffffff;
  --danger: #d9534f;
  --success: #4caf7d;
  --warning: #e0a83e;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 700;
  margin: 0 0 0.5em;
}

a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }

.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header / Nav */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 40px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  line-height: 1;
}

.logo-img {
  height: 42px;
  width: auto;
  display: block;
  /* Logo-Datei ist für dunklen Hintergrund gebaut (hell) -- hier fürs helle Design
     invertiert, damit sie auf weißem Grund lesbar bleibt. */
  filter: invert(1) brightness(0.2);
}

nav.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

nav.site-nav a {
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

nav.site-nav a:hover { color: var(--accent-light); text-decoration: none; }
nav.site-nav a.active { color: var(--accent-light); }

/* Logout ist ein POST-Formular (CSRF), der Button sieht aber aus wie die Nav-Links. */
nav.site-nav .nav-form { display: inline; margin: 0; }
nav.site-nav .nav-btn {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
nav.site-nav .nav-btn:hover { color: var(--accent-light); }

nav.site-nav .user-chip {
  color: var(--text-muted);
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 500;
}

.main {
  flex: 1;
  padding: 40px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

.main.narrow { max-width: 480px; }

/* Panels / cards */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
}

.panel-white {
  background: #ffffff;
  color: #1a1a1a;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  box-shadow: 0 0 40px rgba(47, 147, 181, 0.25);
  margin-bottom: 28px;
}

.clock-card {
  min-height: 230px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.clock-card-inner {
  width: 100%;
}

.grid {
  display: grid;
  gap: 20px;
  margin-bottom: 24px;
}

.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Stat tiles */
.stat {
  background: var(--bg-panel-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}
.stat .stat-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.stat .stat-value {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
}
.stat .stat-value.accent { color: var(--accent-light); }

/* Forms */
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  margin-top: 16px;
}
label:first-child { margin-top: 0; }

input[type=text], input[type=email], input[type=password], input[type=date],
input[type=time], input[type=number], textarea, select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

textarea { resize: vertical; min-height: 80px; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--text-on-accent);
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-align: center;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.btn-secondary { background: var(--bg-panel-raised); border: 1px solid var(--border); color: var(--text); }
.btn.btn-secondary:hover { background: var(--bg-input); }
.btn.btn-danger { background: var(--danger); }
.btn.btn-danger:hover { background: #b7433f; }
.btn.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-row { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }

/* Filterzeile (Monat/Woche + Buttons): Labels stehen über den Feldern, daher unten
   ausrichten, damit Buttons auf einer Linie mit den Feldern sitzen. Bewusst als Klasse
   statt inline-style, damit die Mobil-Regeln weiter unten greifen können. */
.btn-row.filter-row { margin-top: 0; align-items: flex-end; }

/* Option rows with letter badge, like the reference design */
.option-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-panel-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 10px;
}

.option-badge {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-input);
}

/* Badges / status pills */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge.pending { background: rgba(224, 168, 62, 0.15); color: var(--warning); }
.badge.approved { background: rgba(76, 175, 125, 0.15); color: var(--success); }
.badge.rejected { background: rgba(217, 83, 79, 0.15); color: var(--danger); }
.badge.admin { background: rgba(47, 147, 181, 0.15); color: var(--accent-light); }
.badge.employee { background: rgba(168, 168, 168, 0.15); color: var(--text-muted); }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
th { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
tr:last-child td { border-bottom: none; }

.flash {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 14px;
}
.flash.error { background: rgba(217, 83, 79, 0.12); color: #a8322e; border: 1px solid rgba(217, 83, 79, 0.4); }
.flash.success { background: rgba(76, 175, 125, 0.12); color: #24663f; border: 1px solid rgba(76, 175, 125, 0.4); }

.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

.chart-tooltip {
  position: fixed;
  pointer-events: none;
  background: #1a1a1a;
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
  z-index: 1000;
  opacity: 0;
  transform: translate(-50%, -100%);
  transition: opacity 0.1s ease;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}
.chart-tooltip.visible { opacity: 1; }

.clock-display {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--accent-light);
  text-align: center;
  margin: 8px 0 20px;
}

.site-footer {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 12px;
  border-top: 1px solid var(--border);
}

/* ---- Mobil / Tablet ---- */

/* Tabellen laufen auf schmalen Screens sonst über den Bildschirmrand hinaus.
   display:block + overflow-x:auto macht die Tabelle selbst horizontal scrollbar,
   ohne dass die ganze Seite seitlich scrollt. */
@media (max-width: 900px) {
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  th, td { padding: 10px 12px; }
}

@media (max-width: 640px) {
  .site-header {
    padding: 16px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .logo-img { height: 34px; }

  nav.site-nav {
    gap: 14px 18px;
    width: 100%;
  }
  nav.site-nav a { font-size: 12px; letter-spacing: 0.5px; }

  .main { padding: 20px 16px; }

  .panel { padding: 20px 16px; border-radius: var(--radius-md); }
  .panel-white { padding: 22px 18px; border-radius: var(--radius-md); }
  .clock-card { min-height: 190px; }

  .grid { gap: 14px; margin-bottom: 18px; }
  /* Stat-Kacheln nebeneinander lassen sie zu schmal werden -> untereinander */
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }

  .stat { padding: 14px 16px; }
  .stat .stat-value { font-size: 22px; }

  .clock-display { font-size: 38px; }

  h2 { font-size: 22px; }
  h3 { font-size: 18px; }

  /* Buttons/Filter untereinander statt nebeneinander, volle Breite = gute Tap-Ziele */
  .btn-row, .btn-row.filter-row { flex-direction: column; align-items: stretch; gap: 10px; }
  .btn-row > div { width: 100%; }
  .btn-row .btn { width: 100%; }
  /* Innerhalb von Tabellenzellen sollen Buttons NICHT die volle Breite einnehmen */
  td .btn, td .btn-row { width: auto; }
  td .btn-row { flex-direction: row; }

  .btn { padding: 12px 18px; }
  .btn.btn-sm { padding: 10px 14px; }

  /* iOS zoomt Formularfelder mit font-size < 16px beim Fokussieren automatisch rein */
  input[type=text], input[type=email], input[type=password], input[type=date],
  input[type=time], input[type=number], input[type=month], input[type=week], textarea, select {
    font-size: 16px;
  }
}