:root {
  color-scheme: light;
  --bg:          #f3f3f3;
  --card:        #ffffff;
  --card-strong: #ffffff;
  --soft:        #f5f5f5;
  --text:        #1b1b1b;
  --muted:       #616161;
  --line:        rgba(0,0,0,.0578);
  --line-strong: rgba(0,0,0,.1622);
  --hover:       rgba(0,0,0,.0373);
  --pressed:     rgba(0,0,0,.0241);
  --accent:      #ef7a22;
  --accent2:     #c95b0f;
  --accent-hover:#d86c18;
  --danger:      #c42b1c;
  --radius-sm:   4px;
  --radius-md:   8px;
  --layer:       rgba(255,255,255,.5);
  --shadow-card: 0 1px 4px rgba(0,0,0,.08);
  --spot-rgb-1:  243 138 49;
  --spot-rgb-2:  255 192 121;
  --spot1-x: 18%; --spot1-y: 12%;
  --spot2-x: 82%; --spot2-y: 16%;
  --spot3-x: 68%; --spot3-y: 86%;
  --transition:  0.083s linear;
  /* legacy aliases kept for compatibility */
  --accent-h:    #d86c18;
  --surface:     #ffffff;
  --border:      rgba(0,0,0,.0578);
  --radius:      8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; min-height: 100%; }

body {
  font-family: 'Segoe UI Variable', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(48rem 34rem at var(--spot1-x) var(--spot1-y), rgb(var(--spot-rgb-1) / .08), transparent 72%),
    radial-gradient(40rem 30rem at var(--spot2-x) var(--spot2-y), rgb(var(--spot-rgb-2) / .06), transparent 74%),
    radial-gradient(34rem 26rem at var(--spot3-x) var(--spot3-y), rgb(var(--spot-rgb-1) / .05), transparent 72%),
    var(--bg);
  color: var(--text);
  font-size: 15px;
  overflow-x: hidden;
}

/* ── Shell ── */
.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.blob { display: none; }

/* ── Topbar ── */
.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-card);
}
.topbar-logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
  user-select: none;
}
.logo-f    { color: var(--accent); }
.logo-rest { color: var(--text); }
.topbar-sub {
  font-size: .72rem;
  color: var(--muted);
  letter-spacing: .1em;
  text-transform: uppercase;
  border-left: 1px solid var(--line);
  padding-left: 14px;
  user-select: none;
}

/* ── Card wrap ── */
.card-wrap {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(32px, 5vh, 72px) clamp(16px, 4vw, 40px) 60px;
}

/* ── Step sections ── */
.step {
  display: none;
  flex-direction: column;
  width: 100%;
  max-width: 720px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(28px, 3.5vw, 48px) clamp(24px, 4vw, 56px);
  box-shadow: var(--shadow-card);
  animation: fluent-fade-in .167s ease-out;
}
.step.active { display: flex; }

@keyframes fluent-fade-in {
  from { opacity: 0; transform: scale(.98); }
  to   { opacity: 1; transform: scale(1); }
}

/* ── Step indicator ── */
.step-indicator {
  display: flex;
  gap: 5px;
  margin-bottom: 18px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line-strong);
  transition: all .2s;
}
.dot.active {
  background: var(--accent);
  width: 20px;
  border-radius: 3px;
}
.dot.done { background: color-mix(in srgb, var(--accent) 42%, var(--line-strong)); }

/* ── Typography ── */
h1 {
  font-size: clamp(1.45rem, 2.5vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -.025em;
  margin-bottom: 7px;
  color: var(--text);
}
.sub {
  font-size: .93rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

/* -- Form fields -- */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}
.field-row {
  display: grid;
  gap: 14px;
  gap: 11px;
}
  font-size: .75rem;
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
  user-select: none;
}
input[type=text],
input[type=email] {
  background: var(--card-strong);
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 8px 11px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}
input[type=text]:focus,
input[type=email]:focus {
  border-bottom: 2px solid var(--accent);
}
input.invalid {
  border-color: var(--danger);
  border-bottom-color: var(--danger);
}

/* ── Buttons ── */
.btn-primary {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 16px;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-bottom: 1px solid color-mix(in srgb, #000 28%, var(--accent));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  user-select: none;
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  border-bottom-color: color-mix(in srgb, #000 28%, var(--accent-hover));
}
.btn-primary:active { opacity: .85; }
.btn-primary:disabled { opacity: .38; cursor: not-allowed; }

.btn-ghost {
  background: var(--layer);
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--line-strong);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  user-select: none;
}
.btn-ghost:hover  { background: var(--hover); }
.btn-ghost:active { background: var(--pressed); }
.arrow { font-size: 1em; }

/* ── Error message ── */
.error-msg {
  background: color-mix(in srgb, var(--danger) 8%, var(--card));
  border: 1px solid color-mix(in srgb, var(--danger) 28%, var(--line));
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: .85rem;
  color: var(--danger);
  margin-bottom: 10px;
}

/* ── Termine list (step 2) ── */
.termine-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 14px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 2px;
}
.termine-list::-webkit-scrollbar { width: 6px; }
.termine-list::-webkit-scrollbar-thumb { background: rgba(0,0,0,.2); border-radius: 3px; }
.termine-list::-webkit-scrollbar-track { background: transparent; }

.termin-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 11px 14px;
  cursor: pointer;
  background: var(--card);
  transition: border-color var(--transition), background var(--transition);
}
.termin-card:hover    { background: var(--hover); border-color: var(--line-strong); }
.termin-card.selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, var(--card));
}

.termin-card .tc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 5px;
}
.termin-card .tc-thema {
  font-weight: 600;
  font-size: .93rem;
}

/* ── Badges ── */
.badge {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
  user-select: none;
}
.badge-live   {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent2);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
}
.badge-online {
  background: rgba(29,111,202,.08);
  color: #1d6fca;
  border: 1px solid rgba(29,111,202,.22);
}
.badge-onsite {
  background: var(--soft);
  color: var(--muted);
  border: 1px solid var(--line);
}
.badge-nocode {
  background: color-mix(in srgb, var(--danger) 8%, transparent);
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 24%, transparent);
}

.termin-card .tc-meta {
  font-size: .79rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tc-meta span::before { content: '· '; }
.tc-meta span:first-child::before { content: ''; }

.loading-spinner {
  color: var(--muted);
  font-size: .88rem;
  padding: 16px 0;
  text-align: center;
}
.dots { animation: blink 1.2s ease-in-out infinite; }
@keyframes blink {
  0%, 100% { opacity: .3; }
  50%       { opacity: 1; }
}

/* ── PIN boxes (step 3) ── */
.pin-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.pin-box {
  width: 42px;
  height: 48px;
  background: var(--card-strong);
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  font-family: 'Cascadia Code', 'Courier New', monospace;
  text-transform: uppercase;
  outline: none;
  transition: border-color var(--transition);
}
.pin-box:focus  { border-bottom: 2px solid var(--accent); }
.pin-box.filled { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.pin-box.invalid {
  border-color: var(--danger);
  border-bottom-color: var(--danger);
}
.pin-divider {
  color: var(--muted);
  font-size: .9rem;
  user-select: none;
  padding: 0 2px;
}

/* ── Success screen (step 4) ── */
.success-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 12%, var(--card));
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 14px;
}
.success-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}
.btn-webinar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 9px 18px;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-bottom: 1px solid color-mix(in srgb, #000 28%, var(--accent));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition);
}
.btn-webinar:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  border-bottom-color: color-mix(in srgb, #000 28%, var(--accent-hover));
}
.location-info {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: .87rem;
  line-height: 1.7;
  color: var(--muted);
}
.location-info strong {
  color: var(--text);
  display: block;
  margin-bottom: 4px;
  font-size: .9rem;
}

/* ── Admin hint link ── */
.admin-hint {
  position: fixed;
  bottom: 16px;
  right: 20px;
  font-size: .72rem;
  color: rgba(0,0,0,.16);
  text-decoration: none;
  z-index: 10;
  transition: color .2s;
}
.admin-hint:hover { color: var(--muted); }

/* ── Focus (WinUI3 style) ── */
:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 1px;
  border-radius: var(--radius-sm);
}

/* ── Scrollbars (Win11 style) ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,.24); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,.38); }
::-webkit-scrollbar-track { background: transparent; }

/* ── Responsive ── */
@media (max-width: 720px) {
  .card-wrap { align-items: flex-start; padding-top: 24px; }
}
@media (max-width: 560px) {
  .step { padding: 24px 20px; }
  .field-row { grid-template-columns: 1fr; }
  .pin-box { width: 38px; height: 44px; font-size: 1.15rem; }
  .topbar { padding: 11px 16px; }
  h1 { font-size: 1.4rem; }
}