:root {
  --green: #1f7a3d;
  --green-dark: #14552a;
  --court: #2e7d32;
  --accent: #c6ff3f;
  --bg: #f4f6f5;
  --card: #ffffff;
  --line: #e3e7e4;
  --text: #1b2420;
  --muted: #6a756f;
  --free: #ffffff;
  --free-hover: #eaf6ee;
  --mine: #1f7a3d;
  --taken: #d9dedb;
  --danger: #c0392b;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);
}

* { box-sizing: border-box; }

/* Das hidden-Attribut muss display-Regeln (z. B. .overlay/.dialog-body mit
   display:flex) immer schlagen, sonst erscheinen verborgene Elemente trotzdem. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .9rem 1.3rem;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  color: #fff;
  box-shadow: var(--shadow);
}
.brand { display: flex; align-items: center; gap: .8rem; }
.logo { display: inline-flex; }
.logo svg { width: 44px; height: 44px; display: block; filter: drop-shadow(0 1px 2px rgba(0,0,0,.25)); }
.brand h1 { margin: 0; font-size: 1.2rem; letter-spacing: .2px; }
.brand p { margin: 0; font-size: .8rem; opacity: .85; }

.me { display: flex; gap: .8rem; flex-wrap: wrap; }
.me .field { display: flex; flex-direction: column; gap: .25rem; min-width: 150px; }
.me label { font-size: .72rem; text-transform: uppercase; letter-spacing: .5px; opacity: .85; }
.me input {
  padding: .55rem .7rem;
  border: none;
  border-radius: 8px;
  font-size: .95rem;
  outline: 2px solid transparent;
  transition: outline-color .15s;
}
.me input:focus { outline-color: var(--accent); }

/* Week nav */
.weeknav {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .9rem 1.3rem .3rem;
}
.navbtn {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  padding: .45rem .8rem;
  font-size: 1.05rem;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.navbtn:hover { background: var(--free-hover); border-color: var(--green); }
.navbtn.today { font-size: .85rem; font-weight: 600; }
.weeklabel { font-weight: 600; margin-left: .4rem; }

/* Message bar */
.message {
  margin: .6rem 1.3rem 0;
  padding: .6rem .9rem;
  border-radius: 8px;
  font-size: .9rem;
}
.message.error { background: #fdecea; color: var(--danger); border: 1px solid #f5c6c2; }
.message.success { background: #eaf7ee; color: var(--green-dark); border: 1px solid #bfe6c9; }

/* Calendar */
main { padding: 1rem 1.3rem 2rem; }
.calendar-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.calendar { border-collapse: collapse; width: 100%; min-width: 360px; table-layout: fixed; }
.calendar th, .calendar td { border: 1px solid var(--line); text-align: center; }

.calendar thead th {
  padding: .6rem .3rem;
  background: #fafbfa;
  font-size: .82rem;
  position: sticky;
  top: 0;
}
.calendar thead th .dow { display: block; color: var(--muted); font-weight: 500; font-size: .72rem; text-transform: uppercase; }
.calendar thead th .dnum { display: block; font-size: 1.05rem; font-weight: 700; }
.calendar thead th.is-today .dnum { color: var(--green); }
.calendar thead th.is-today { background: #eef8f1; }
.calendar th.timecol, .calendar td.timecol {
  background: #fafbfa; color: var(--muted);
  font-size: .78rem; width: 56px; font-variant-numeric: tabular-nums;
}

.slot {
  height: 26px;
  cursor: pointer;
  position: relative;
  font-size: .72rem;
  padding: 1px 4px;
  transition: background .12s;
  user-select: none;
}
/* Halbe-Stunden-Zeilen: dezente Trennlinie, volle Stunden kräftiger */
.calendar tr.halfrow td { border-top: 1px dashed #eef0ef; }
.calendar tr.hourrow td { border-top: 1px solid var(--line); }
.slot.free { background: var(--free); }
.slot.free:hover { background: var(--free-hover); box-shadow: inset 0 0 0 2px var(--green); }
.slot.taken { background: var(--taken); color: var(--muted); cursor: not-allowed; }
.slot.mine { background: var(--mine); color: #fff; cursor: pointer; }
.slot.mine:hover { background: var(--danger); }
.slot.past { background: repeating-linear-gradient(45deg,#f0f2f1,#f0f2f1 6px,#e8eae9 6px,#e8eae9 12px); cursor: not-allowed; color: #b6bdb9; }
.slot .who { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; line-height: 1.2; }
.slot.mine .hint { display: none; font-size: .65rem; opacity: .85; }
.slot.mine:hover .who { display: none; }
.slot.mine:hover .hint { display: block; }

/* Legend */
.legend {
  display: flex; gap: 1.4rem; flex-wrap: wrap;
  padding: 0 1.3rem 2rem; color: var(--muted); font-size: .85rem;
}
.legend .dot { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: .35rem; vertical-align: -1px; border: 1px solid var(--line); }
.dot.free { background: var(--free); }
.dot.mine { background: var(--mine); }
.dot.taken { background: var(--taken); }

/* Dialog / Overlay */
.overlay {
  position: fixed; inset: 0;
  background: rgba(20, 30, 25, .45);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem; z-index: 50;
}
.dialog {
  background: var(--card);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
  width: 100%; max-width: 380px;
  overflow: hidden;
}
.dialog-body { display: flex; flex-direction: column; padding: 1.3rem 1.4rem 1.2rem; }
.dialog-body h2 { margin: 0 0 .2rem; font-size: 1.15rem; }
.dialog-slot { margin: 0 0 1rem; color: var(--muted); font-size: .92rem; }
#cancelSlot { color: #000; font-size: 1.25rem; font-weight: 700; line-height: 1.35; }
.dialog-body label { font-size: .72rem; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); margin: .5rem 0 .25rem; }
.dialog-body input, .dialog-body select {
  padding: .6rem .7rem; border: 1px solid var(--line); border-radius: 8px;
  font-size: .95rem; outline: 2px solid transparent; transition: outline-color .15s, border-color .15s;
}
.dialog-body input:focus, .dialog-body select:focus { outline-color: var(--green); border-color: var(--green); }
.dialog-err { margin: .7rem 0 0; color: var(--danger); font-size: .85rem; }
.dialog-actions { display: flex; gap: .6rem; justify-content: flex-end; margin-top: 1.2rem; }
.btn { border: none; border-radius: 8px; padding: .6rem 1rem; font-size: .92rem; font-weight: 600; cursor: pointer; }
.btn.primary { background: var(--green); color: #fff; }
.btn.primary:hover { background: var(--green-dark); }
.btn.danger { background: var(--danger); color: #fff; }
.btn.danger:hover { background: #a5281b; }
.btn.ghost { background: transparent; color: var(--muted); }
.btn.ghost:hover { background: var(--bg); }

/* mehrstündige Buchung: leichter Verlauf, oben Zeit, unten Hinweis */
.slot.mine.span { vertical-align: top; }
.slot.mine .range { display: block; font-size: .68rem; opacity: .85; font-variant-numeric: tabular-nums; }

@media (max-width: 600px) {
  .brand h1 { font-size: 1rem; }
}