/* ============================================================
   Brutto-Netto-Rechner Österreich 2026 – Hauptlayout
   ============================================================ */

:root {
  --color-red:       #CC0000;
  --color-red-dark:  #990000;
  --color-blue:      #1A3A5C;
  --color-blue-light:#2B5F8E;
  --color-bg:        #F0F2F5;
  --color-card:      #FFFFFF;
  --color-border:    #D4D8DE;
  --color-text:      #1E2A38;
  --color-muted:     #6B7A8D;
  --color-pos:       #1B6B2F;
  --color-neg:       #B71C1C;
  --color-credit:    #1565C0;
  --color-sub:       #37474F;

  --radius:    6px;
  --radius-lg: 10px;
  --shadow:    0 2px 8px rgba(0,0,0,0.10);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
  --font:      'Segoe UI', system-ui, -apple-system, sans-serif;
  --transition: 0.15s ease;
}

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

html { font-size: 15px; scroll-behavior: smooth; }

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

/* ── Header ─────────────────────────────────────────────────── */
header {
  background:    var(--color-blue);
  color:         #fff;
  padding:       1rem 2rem;
  display:       flex;
  align-items:   center;
  gap:           1rem;
  box-shadow:    0 2px 6px rgba(0,0,0,0.2);
}

.header-flag {
  display:        flex;
  flex-direction: column;
  width:          32px;
  height:         22px;
  overflow:       hidden;
  border-radius:  2px;
  flex-shrink:    0;
}
.header-flag span {
  flex: 1;
  display: block;
}
.header-flag span:nth-child(1) { background: #CC0000; }
.header-flag span:nth-child(2) { background: #FFFFFF; }
.header-flag span:nth-child(3) { background: #CC0000; }

header h1 {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.year-badge {
  margin-left:     auto;
  background:      rgba(255,255,255,0.15);
  border:          1px solid rgba(255,255,255,0.3);
  color:           #fff;
  padding:         0.25rem 0.75rem;
  border-radius:   20px;
  font-size:       0.85rem;
  font-weight:     600;
  letter-spacing:  0.05em;
}

/* ── Haupt-Layout ───────────────────────────────────────────── */
main {
  display:               grid;
  grid-template-columns: 380px 1fr;
  gap:                   1.5rem;
  max-width:             1100px;
  margin:                0 auto;
  padding:               1.5rem;
  align-items:           start;
}

@media (max-width: 860px) {
  main { grid-template-columns: 1fr; }
}

/* ── Panels ──────────────────────────────────────────────────── */
.panel {
  background:    var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow:    var(--shadow);
  overflow:      hidden;
}

.panel-header {
  background:  var(--color-blue);
  color:       #fff;
  padding:     0.75rem 1.25rem;
  font-size:   0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.panel-body {
  padding: 1.25rem;
}

/* Sticky results panel (desktop) */
#results-panel {
  position: sticky;
  top:      1.5rem;
}

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding:    1.5rem;
  color:      var(--color-muted);
  font-size:  0.8rem;
  line-height: 1.6;
}
footer a { color: var(--color-blue-light); }