/* QueueFlow Design System — Black/White/Angular */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@300;400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary:   #000000;
  --bg-surface:   #0d0d0d;
  --bg-elevated:  #1a1a1a;
  --bg-hover:     #262626;
  --text-primary: #ffffff;
  --text-secondary:#999999;
  --text-muted:   #555555;
  --accent:       #ffffff;
  --accent-dim:   #cccccc;
  --danger:       #ff3333;
  --success:      #00cc44;
  --warning:      #ffaa00;
  --info:         #0099ff;
  --border:       #2a2a2a;
  --border-bright:#444444;
  --radius:       0px;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;
  --font-sans:    'IBM Plex Sans', system-ui, sans-serif;
  --transition:   0.12s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ────────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
h1 { font-size: clamp(2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p { color: var(--text-secondary); line-height: 1.7; }
a { color: var(--text-primary); text-decoration: underline; transition: opacity var(--transition); }
a:hover { opacity: 0.7; }
code, pre { font-family: var(--font-mono); }

/* ── Layout ────────────────────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 720px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-4  { gap: 4px; }
.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

/* ── Navigation ───────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav__logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}
.nav__logo span { color: var(--text-secondary); }
.nav__links { display: flex; gap: 32px; list-style: none; }
.nav__links a { text-decoration: none; color: var(--text-secondary); font-size: 0.9rem; transition: color var(--transition); }
.nav__links a:hover { color: var(--text-primary); }
.nav__actions { display: flex; gap: 12px; }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  border-radius: var(--radius);
  outline: none;
}
.btn:focus-visible { box-shadow: 0 0 0 3px rgba(255,255,255,0.3); }

.btn--primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}
.btn--primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-bright);
}
.btn--ghost:hover { background: var(--bg-elevated); border-color: var(--text-secondary); }

.btn--danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn--danger:hover { filter: brightness(0.85); }

.btn--success { background: var(--success); color: #000; border-color: var(--success); }
.btn--lg { padding: 14px 32px; font-size: 1rem; }
.btn--sm { padding: 6px 12px; font-size: 0.75rem; }
.btn--full { width: 100%; }
.btn--icon { padding: 10px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 24px;
}
.card--elevated { background: var(--bg-elevated); }
.card--hover { transition: border-color var(--transition), transform var(--transition); }
.card--hover:hover { border-color: var(--border-bright); transform: translateY(-2px); }
.card__header { margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.card__title { font-family: var(--font-mono); font-size: 1rem; font-weight: 600; }
.card__subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-top: 4px; }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.form-input, .form-select, .form-textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color var(--transition);
  border-radius: var(--radius);
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--text-secondary);
}
.form-input::placeholder { color: var(--text-muted); }
.form-error { color: var(--danger); font-size: 0.8rem; }
.form-hint  { color: var(--text-muted); font-size: 0.8rem; }

/* ── Badge ─────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid;
}
.badge--success { color: var(--success); border-color: var(--success); }
.badge--danger  { color: var(--danger);  border-color: var(--danger);  }
.badge--warning { color: var(--warning); border-color: var(--warning); }
.badge--muted   { color: var(--text-muted); border-color: var(--border); }
.badge--white   { color: var(--text-primary); border-color: var(--border-bright); }

/* ── Tables ────────────────────────────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.table th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.table td { font-size: 0.9rem; }
.table tr:hover td { background: var(--bg-elevated); }

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 80vh;
  display: flex; align-items: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 39px, var(--border) 40px),
    repeating-linear-gradient(
    90deg, transparent, transparent 39px, var(--border) 40px);
  opacity: 0.3;
}
.hero__content { position: relative; z-index: 1; max-width: 700px; }
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.hero__title { margin-bottom: 24px; }
.hero__title em { font-style: normal; color: var(--text-secondary); }
.hero__description { font-size: 1.1rem; margin-bottom: 40px; max-width: 500px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ── Pricing ───────────────────────────────────────────────────────────────── */
.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 32px;
  position: relative;
  transition: border-color var(--transition);
}
.pricing-card:hover { border-color: var(--border-bright); }
.pricing-card--featured {
  border-color: var(--text-primary);
  background: var(--bg-elevated);
}
.pricing-card--featured::before {
  content: 'EMPFOHLEN';
  position: absolute; top: -1px; right: 24px;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
}
.pricing-name { font-family: var(--font-mono); font-size: 0.875rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-secondary); }
.pricing-price { font-family: var(--font-mono); font-size: 3rem; font-weight: 700; margin: 12px 0; }
.pricing-price span { font-size: 1rem; color: var(--text-secondary); }
.pricing-features { list-style: none; margin: 24px 0; display: flex; flex-direction: column; gap: 12px; }
.pricing-features li { display: flex; gap: 12px; font-size: 0.9rem; color: var(--text-secondary); align-items: flex-start; }
.pricing-features li::before { content: '—'; color: var(--text-primary); flex-shrink: 0; }
.pricing-features li.included { color: var(--text-primary); }

/* ── Sections ──────────────────────────────────────────────────────────────── */
section { padding: 80px 0; }
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.section-title { margin-bottom: 16px; }
.section-desc { color: var(--text-secondary); max-width: 560px; }

/* ── Divider ───────────────────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

/* ── Alert ─────────────────────────────────────────────────────────────────── */
.alert { padding: 14px 16px; border: 1px solid; font-size: 0.875rem; margin-bottom: 16px; }
.alert--success { border-color: var(--success); color: var(--success); background: rgba(0,204,68,0.05); }
.alert--danger  { border-color: var(--danger);  color: var(--danger);  background: rgba(255,51,51,0.05); }
.alert--warning { border-color: var(--warning); color: var(--warning); background: rgba(255,170,0,0.05); }
.alert--info    { border-color: var(--info);    color: var(--info);    background: rgba(0,153,255,0.05); }

/* ── Loading ───────────────────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Number display ─────────────────────────────────────────────────────────── */
.queue-number {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 15vw, 12rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}
.queue-number--current { color: var(--text-primary); }
.queue-number--waiting { color: var(--text-muted); font-size: clamp(2rem, 8vw, 6rem); }

/* ── Pairing code display ───────────────────────────────────────────────────── */
.pairing-code {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 12vw, 8rem);
  font-weight: 700;
  letter-spacing: 0.3em;
  text-align: center;
  border: 2px solid var(--border-bright);
  padding: 32px;
  display: block;
  margin: 24px 0;
}

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-bright); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Utilities ─────────────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-secondary); }
.text-mono   { font-family: var(--font-mono); }
.text-sm     { font-size: 0.875rem; }
.text-xs     { font-size: 0.75rem; }
.text-lg     { font-size: 1.125rem; }
.text-success{ color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning{ color: var(--warning); }
.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-4  { margin-bottom: 4px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }