:root {
  --bg: #eef2f9;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --border: #e3e8f0;
  --primary: #2f6feb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --sys: #e5484d;
  --dia: #3b82f6;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .06);
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ---- Topbar / Nav ---- */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  flex-wrap: wrap;
}
.brand a { color: var(--text); font-weight: 700; font-size: 1.15rem; }
.brand .logo { font-size: 1.2rem; }
.mainnav { display: flex; align-items: center; gap: 6px 16px; flex-wrap: wrap; }
.mainnav a { color: var(--text); padding: 6px 4px; font-weight: 500; }
.mainnav a:hover { color: var(--primary); text-decoration: none; }
.mainnav .who { color: var(--muted); font-size: .9rem; margin-left: 4px; }
.nav-cta {
  background: var(--primary); color: #fff !important; padding: 8px 14px !important;
  border-radius: 8px;
}
.nav-cta:hover { background: var(--primary-dark); }

/* ---- Layout ---- */
.container { width: 100%; max-width: 940px; margin: 0 auto; padding: 24px 20px; flex: 1; }
.footer {
  text-align: center; color: var(--muted); font-size: .82rem;
  padding: 20px; border-top: 1px solid var(--border); background: var(--card);
}
.page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; margin-bottom: 18px;
}
.page-head h1 { margin: 0; font-size: 1.5rem; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px;
}
h1 { font-size: 1.6rem; }
.muted { color: var(--muted); }
.center { text-align: center; }
.hint { font-size: .85rem; color: var(--muted); margin: -4px 0 4px; }

/* ---- Flash ---- */
.flashes { margin-bottom: 16px; display: flex; flex-direction: column; gap: 8px; }
.flash { padding: 11px 14px; border-radius: 10px; font-size: .92rem; border: 1px solid transparent; }
.flash-success { background: #e7f6ed; color: #1a7f43; border-color: #b7e4c7; }
.flash-error   { background: #fdecec; color: #b42318; border-color: #f4c7c3; }
.flash-info    { background: #e8f0fe; color: #1a56db; border-color: #c3d4f7; }

/* ---- Auth cards ---- */
.auth-wrap { display: flex; justify-content: center; padding-top: 10px; }
.auth-card { width: 100%; max-width: 440px; }
.auth-card h1 { margin-top: 0; }

/* ---- Forms ---- */
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: .9rem; }
.form input, .form textarea, .form select {
  font: inherit; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 10px; background: #fff; color: var(--text); width: 100%;
}
.form input:focus, .form textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47, 111, 235, .15);
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 4px; }

/* ---- Buttons ---- */
.btn {
  display: inline-block; font: inherit; font-weight: 600; cursor: pointer;
  padding: 10px 16px; border-radius: 10px; border: 1px solid transparent;
  text-align: center; transition: background .15s, border-color .15s;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: #fff; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: #f3f5fa; }
.btn-danger { background: #fff; color: var(--danger); border-color: #f1c9c6; }
.btn-danger:hover { background: #fdecec; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 11px; font-size: .85rem; border-radius: 8px; }
.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; font: inherit; padding: 6px 4px; }
.inline { display: inline; }

/* ---- Weekbar ---- */
.weekbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; margin-bottom: 16px;
}
.weeknav { display: flex; align-items: center; gap: 12px; }
.weeklabel { display: flex; flex-direction: column; line-height: 1.2; }
.weeklabel strong { font-size: 1.05rem; }
.weeklabel span { color: var(--muted); font-size: .85rem; }
.weekpick { display: flex; align-items: center; gap: 8px; }
.weekpick input { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 10px; }

/* ---- Reading list ---- */
.reading-head, .reading {
  display: grid;
  grid-template-columns: 150px 160px 150px 1fr auto;
  gap: 12px; align-items: center;
}
.reading-head {
  padding: 4px 18px; color: var(--muted); font-size: .74rem;
  text-transform: uppercase; letter-spacing: .05em; font-weight: 600;
}
.reading-list { display: flex; flex-direction: column; gap: 10px; }
.reading { padding: 14px 18px; }
.r-date { display: flex; flex-direction: column; }
.r-day { font-weight: 600; }
.r-time { color: var(--muted); font-size: .85rem; }
.r-values { font-size: 1.35rem; font-weight: 700; }
.r-values .val.sys { color: var(--sys); }
.r-values .val.dia { color: var(--dia); }
.r-values .slash { color: var(--muted); margin: 0 2px; }
.r-values .unit { font-size: .78rem; font-weight: 500; color: var(--muted); margin-left: 4px; }
.r-note { color: var(--text); font-size: .9rem; word-break: break-word; }
.r-actions { display: flex; gap: 8px; justify-content: flex-end; align-items: center; }

.empty { text-align: center; padding: 40px 18px; display: flex; flex-direction: column; gap: 14px; align-items: center; }

/* ---- Badges (Kategorien) ---- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; white-space: nowrap; }
.cat-optimal    { background: #dff5e6; color: #1a7f43; }
.cat-normal     { background: #e4f5e9; color: #22883f; }
.cat-hochnormal { background: #fef4d9; color: #b7791f; }
.cat-grad1      { background: #fdefd6; color: #c05621; }
.cat-grad2      { background: #fde2df; color: #c5372c; }
.cat-grad3      { background: #fbd5d0; color: #9b1c1c; }

/* ---- Chart ---- */
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #fff; }
.seg-btn { padding: 8px 14px; color: var(--text); font-weight: 600; font-size: .9rem; }
.seg-btn:hover { background: #f3f5fa; text-decoration: none; }
.seg-btn.active { background: var(--primary); color: #fff; }
.chart-box { position: relative; height: 360px; }
.legend { display: flex; gap: 20px; justify-content: center; margin-top: 14px; color: var(--muted); font-size: .9rem; }
.legend .dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 5px; vertical-align: middle; }
.legend .dot.sys { background: var(--sys); }
.legend .dot.dia { background: var(--dia); }

/* ---- Admin table ---- */
.table-scroll { overflow-x: auto; padding: 0; }
.admin-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.admin-table th, .admin-table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: .92rem; }
.admin-table th { background: #f7f9fc; color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.admin-table tr:last-child td { border-bottom: none; }
.row-actions { display: flex; gap: 8px; }

.devbox { background: #fff8e6; border: 1px solid #f5e2a8; border-radius: 10px; padding: 14px; margin: 12px 0; font-size: .9rem; display: flex; flex-direction: column; gap: 10px; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ---- Responsive ---- */
@media (max-width: 720px) {
  .reading-head { display: none; }
  .reading { grid-template-columns: 1fr; gap: 8px; }
  .r-actions { justify-content: flex-start; }
  .grid-2 { grid-template-columns: 1fr; }
  .weekbar { flex-direction: column; align-items: stretch; }
  .weeknav { justify-content: space-between; }
  .weekpick { justify-content: space-between; }
  .page-head { align-items: flex-start; }
}