/**
 * basiszinssatz.de - Modern Design System 2026
 * Style: Seriös, Barrierearm, Responsive (Jura, Finanzen, B2B)
 */

:root {
  --primary-900: #0f172a;
  --primary-800: #1e293b;
  --primary-700: #334155;
  --primary-600: #475569;
  
  --brand-blue: #1e40af;
  --brand-blue-hover: #1d4ed8;
  --brand-blue-light: #eff6ff;
  
  --accent-gold: #b45309;
  --accent-gold-light: #fef3c7;
  
  --success-600: #16a34a;
  --success-50: #f0fdf4;
  --danger-600: #dc2626;
  --danger-50: #fef2f2;
  
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-focus: #3b82f6;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.9375rem; /* 15px */
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--brand-blue);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}
a:hover {
  color: var(--brand-blue-hover);
  text-decoration: underline;
}

/* ==========================================================================
   Layout Shell
   ========================================================================== */

.site-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background: var(--primary-900);
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.site-header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #ffffff;
}
.brand-wrap:hover {
  text-decoration: none;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: #ffffff;
  font-weight: 700;
  font-size: 1.35rem;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.brand-text-col {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
  line-height: 1.2;
}

.brand-tagline {
  font-size: 0.75rem;
  color: #94a3b8;
  letter-spacing: 0.01em;
}

/* Desktop Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  color: #e2e8f0;
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.15s ease;
}

.nav-item a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  text-decoration: none;
}

.nav-item.active a,
.nav-item a.nav-btn-calc {
  background: var(--brand-blue);
  color: #ffffff;
  font-weight: 600;
}
.nav-item a.nav-btn-calc:hover {
  background: var(--brand-blue-hover);
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-md);
  cursor: pointer;
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}
.nav-toggle-icon {
  display: block;
  width: 20px;
  height: 2px;
  background: #ffffff;
  position: relative;
  transition: background 0.2s;
}
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 2px;
  background: #ffffff;
  left: 0;
  transition: transform 0.2s;
}
.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }

/* Main Content Area */
.site-main-wrap {
  flex: 1;
  max-width: 1240px;
  width: 100%;
  margin: 1.5rem auto 2.5rem;
  padding: 0 1.25rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2rem;
  align-items: start;
}

.site-main-col {
  min-width: 0;
}

.site-sidebar-col {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Sidebar Cards */
.sidebar-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-900);
  margin-top: 0;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-light);
}

.service-badge {
  text-align: center;
}
.service-badge img {
  display: block;
  margin: 0 auto 0.75rem;
}
.service-badge-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Typography & Headings
   ========================================================================== */

h1, .page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-900);
  margin-top: 0;
  margin-bottom: 1rem;
  line-height: 1.3;
}

h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-900);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

/* ==========================================================================
   Card Component
   ========================================================================== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.card-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.85rem;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-900);
  margin: 0;
}

/* ==========================================================================
   Form Components
   ========================================================================== */

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-section-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-600);
  margin-bottom: 0.5rem;
}

.form-grid-inputs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .form-grid-inputs {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-800);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.label-hint {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
}

.input-currency-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input {
  width: 100%;
  height: 44px;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-main);
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  transition: all 0.15s ease-in-out;
}

.form-input:focus {
  outline: none;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.input-currency-wrap .form-input {
  padding-right: 36px;
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  font-weight: 600;
}

.input-currency-symbol {
  position: absolute;
  right: 12px;
  font-weight: 700;
  color: var(--text-muted);
  pointer-events: none;
}

/* Date Input Segment */
.date-input-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0 0.5rem;
  height: 44px;
  transition: all 0.15s ease-in-out;
}
.date-input-group:focus-within {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.date-segment {
  border: none;
  background: transparent;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.date-segment:focus {
  outline: none;
  background: var(--brand-blue-light);
  border-radius: 2px;
}
.date-segment-day, .date-segment-month { width: 28px; }
.date-segment-year { width: 48px; }
.date-sep {
  color: var(--text-light);
  font-weight: 600;
  user-select: none;
}

/* ==========================================================================
   Radio Selection Cards
   ========================================================================== */

.zinsart-selection {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.zinsart-card {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  background: #ffffff;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
}

.zinsart-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-subtle);
}

.zinsart-card input[type="radio"] {
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
  accent-color: var(--brand-blue);
  cursor: pointer;
}

.zinsart-card.selected {
  border-color: var(--brand-blue);
  background: var(--brand-blue-light);
}

.zinsart-info {
  flex: 1;
}

.zinsart-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge-paragraph {
  background: rgba(30, 64, 175, 0.1);
  color: var(--brand-blue);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
}

.zinsart-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.zinsart-alert {
  color: #991b1b;
  font-weight: 600;
  font-size: 0.8rem;
  margin-top: 0.35rem;
}

.inline-rate-input {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.5rem;
}
.inline-rate-input input {
  width: 75px;
  height: 32px;
  padding: 0.25rem 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: right;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn-submit-wrap {
  margin-top: 0.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  height: 50px;
  background: linear-gradient(180deg, #2563eb, #1e40af);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border: none;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 4px rgba(30, 64, 175, 0.3);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary:hover {
  background: linear-gradient(180deg, #1d4ed8, #1e3a8a);
  box-shadow: 0 4px 8px rgba(30, 64, 175, 0.4);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(30, 64, 175, 0.2);
}

/* Hero CTA Button (Homepage) */
.btn-hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  width: 100%;
  max-width: 440px;
  min-height: 52px;
  padding: 0.75rem 1.75rem;
  background: linear-gradient(135deg, var(--brand-blue) 0%, #1e40af 100%);
  color: #ffffff !important;
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none !important;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: all 0.2s ease-in-out;
}
.btn-hero-cta:hover {
  background: linear-gradient(135deg, var(--brand-blue-hover) 0%, #172554 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}
.btn-hero-cta:active {
  transform: translateY(0);
}

/* Crosslinks Grid (Vergleichsrechner) */
.calc-crosslinks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}
.btn-crosslink {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: #ffffff;
  color: var(--primary-800) !important;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  text-decoration: none !important;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}
.btn-crosslink:hover {
  background: var(--primary-900);
  color: #ffffff !important;
  border-color: var(--primary-900);
}
.crosslink-arrow {
  font-size: 1.1rem;
  color: var(--brand-blue);
  transition: transform 0.15s ease;
}
.btn-crosslink:hover .crosslink-arrow {
  color: #ffffff;
  transform: translateX(3px);
}

/* ==========================================================================
   Überarbeitete Aktionsleiste (Export & Drucken)
   ========================================================================== */

.calc-action-bar {
  background: var(--bg-subtle);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.action-bar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-light);
}

.action-bar-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary-900);
  letter-spacing: -0.01em;
}

.btn-action-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--brand-blue) !important;
  text-decoration: none !important;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  background: #ffffff;
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}
.btn-action-nav:hover {
  background: var(--brand-blue);
  color: #ffffff !important;
  border-color: var(--brand-blue);
}

.action-grid-buttons {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.btn-export-act {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  height: 42px;
  padding: 0 1rem;
  background: #ffffff;
  color: var(--primary-800) !important;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-decoration: none !important;
  transition: all 0.15s ease;
}

.btn-export-act:hover {
  background: var(--primary-900);
  color: #ffffff !important;
  border-color: var(--primary-900);
}

.btn-export-act .act-svg {
  stroke: currentColor;
  flex-shrink: 0;
}

.btn-export-reset {
  background: #eff6ff;
  color: var(--brand-blue) !important;
  border-color: #bfdbfe;
}
.btn-export-reset:hover {
  background: var(--brand-blue);
  color: #ffffff !important;
  border-color: var(--brand-blue);
}

/* Legacy Export Toolbar Fallback */
.export-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  padding: 0.75rem 1rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  align-items: center;
}
.export-toolbar-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-700);
  margin-right: 0.25rem;
}
.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  background: #ffffff;
  color: var(--primary-800);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}
.btn-export:hover {
  background: var(--primary-900);
  color: #ffffff;
  border-color: var(--primary-900);
}

/* ==========================================================================
   Results Table & Summary Cards
   ========================================================================== */

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-900);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-card.highlight {
  background: linear-gradient(135deg, #1e40af, #1e3a8a);
  border-color: #1e3a8a;
  color: #ffffff;
}
.stat-card.highlight .stat-label { color: #93c5fd; }
.stat-card.highlight .stat-value { color: #ffffff; font-size: 1.5rem; }

/* ==========================================================================
   Modern Tables & Responsive Hybrid Styles
   ========================================================================== */

/* Utility Classes for Responsive Tables */
.desk-only { display: table-cell; }
.mob-only { display: none !important; }
.cell-m-label { display: none; }

.table-responsive,
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}

.table-modern {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.table-modern th {
  background: var(--bg-subtle);
  color: var(--primary-900);
  font-weight: 700;
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border-medium);
  white-space: nowrap;
}

.table-modern td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--primary-800);
}

.table-modern tr:last-child td {
  border-bottom: none;
}

.table-modern tr:nth-child(even) td {
  background: #fbfcfe;
}

.table-modern tr:hover td {
  background: #f1f5f9;
}

.table-modern .text-right { text-align: right; }
.table-modern .text-center { text-align: center; }

.table-modern tr.row-total td {
  background: #f1f5f9;
  font-weight: 700;
  border-top: 2px solid var(--border-medium);
  border-bottom: 2px solid var(--border-medium);
}
.table-modern tr.row-grand-total td {
  background: var(--brand-blue-light);
  font-weight: 800;
  color: var(--brand-blue);
  font-size: 0.95rem;
}

/* Base Rate Historical Table (table-bzs-overview) */
.table-bzs-overview th {
  border-right: 1px solid var(--border-light);
}
.table-bzs-overview th:last-child {
  border-right: none;
}
.table-bzs-overview td {
  border-right: 1px solid var(--border-light);
}
.table-bzs-overview td:last-child {
  border-right: none;
}

.table-bzs-overview .bzs-era-row td {
  background: #f1f5f9;
  font-weight: 700;
  color: var(--primary-900);
  border-top: 2px solid var(--border-medium);
  border-bottom: 1px solid var(--border-medium);
  padding: 0.6rem 1rem;
}
.table-bzs-overview .bzs-era-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.table-bzs-overview .bzs-era-laws {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}
.table-bzs-overview .bzs-era-laws a {
  color: var(--brand-blue);
  text-decoration: underline;
}

.table-bzs-overview tr.row-current td {
  background: #eff6ff !important;
  font-weight: 700;
  color: var(--brand-blue) !important;
}

.badge-current {
  display: inline-block;
  background: var(--brand-blue);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 9999px;
  margin-left: 8px;
  letter-spacing: 0.02em;
  vertical-align: middle;
}

.period-days-pill {
  background: #f1f5f9;
  color: var(--primary-700);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
}

/* Error Alert Box */
.error-box {
  background: var(--danger-50);
  border: 1px solid #fca5a5;
  border-left: 4px solid var(--danger-600);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.error-title {
  color: var(--danger-600);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}
.error-list {
  margin: 0;
  padding-left: 1.25rem;
  color: #991b1b;
  font-size: 0.9rem;
}
.error-list li {
  margin-bottom: 0.25rem;
}

/* Footer */
.site-footer {
  background: var(--primary-900);
  color: #94a3b8;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem 1.25rem;
  font-size: 0.85rem;
}
.site-footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer-links {
  display: flex;
  gap: 1rem;
}
.footer-links a {
  color: #cbd5e1;
}
.footer-links a:hover {
  color: #ffffff;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 992px) {
  .site-main-wrap {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .site-sidebar-col {
    order: 2;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary-900);
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  .site-nav.open {
    display: flex;
  }
  .nav-item {
    width: 100%;
  }
  .nav-item a {
    width: 100%;
    padding: 0.75rem 1rem;
  }
}

@media (max-width: 640px) {
  .param-period-col {
    grid-column: 1 / -1 !important;
  }
  .desk-only {
    display: none !important;
  }
  .mob-only {
    display: inline-flex !important;
  }
  .cell-m-label {
    display: block !important;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 2px;
  }

  /* Action Bar on Mobile: Symmetrical 2x2 Grid */
  .action-bar-top .desk-only {
    display: none !important;
  }
  .action-grid-buttons {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 0.6rem !important;
  }
  .btn-export-act {
    width: 100% !important;
    height: 44px !important;
    padding: 0 0.5rem !important;
    font-size: 0.825rem !important;
  }

  /* Table Wrapper on Mobile (No Horizontal Scrolling Needed) */
  .table-responsive-wrapper {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    overflow: visible !important;
  }

  /* 1. Base Rate Overview Cards on Mobile */
  table.table-bzs-overview,
  table.table-bzs-overview tbody {
    display: block !important;
    width: 100% !important;
  }
  table.table-bzs-overview thead {
    display: none !important;
  }
  .table-bzs-overview tr.bzs-era-row {
    display: block !important;
    background: #e2e8f0 !important;
    border-radius: var(--radius-md) !important;
    padding: 0.65rem 0.85rem !important;
    margin: 1.25rem 0 0.65rem 0 !important;
    border: none !important;
  }
  .table-bzs-overview tr.bzs-era-row td {
    display: block !important;
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
  }
  .table-bzs-overview tr.bzs-data-row {
    display: grid !important;
    grid-template-columns: 1fr 1fr 1fr !important;
    grid-template-areas:
      "period period period"
      "basis consumer commercial" !important;
    gap: 0.45rem !important;
    background: #ffffff !important;
    border: 1px solid var(--border-light) !important;
    border-radius: var(--radius-md) !important;
    padding: 0.75rem 0.85rem !important;
    margin-bottom: 0.65rem !important;
    box-shadow: var(--shadow-sm) !important;
  }
  .table-bzs-overview tr.bzs-data-row.row-current {
    border: 2px solid var(--brand-blue) !important;
    background: #f0f7ff !important;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.18) !important;
  }
  .table-bzs-overview .cell-period {
    grid-area: period !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    border-bottom: 1px solid var(--border-light) !important;
    padding: 0 0 0.4rem 0 !important;
    margin-bottom: 0.25rem !important;
    font-weight: 700 !important;
    font-size: 0.95rem !important;
    color: var(--primary-900) !important;
    border-right: none !important;
    border-top: none !important;
    border-left: none !important;
  }
  .table-bzs-overview .cell-basis {
    grid-area: basis !important;
    background: #f8fafc !important;
    border-radius: var(--radius-sm) !important;
    padding: 0.45rem 0.25rem !important;
    text-align: center !important;
    border: 1px solid #f1f5f9 !important;
  }
  .table-bzs-overview .cell-consumer {
    grid-area: consumer !important;
    background: #f8fafc !important;
    border-radius: var(--radius-sm) !important;
    padding: 0.45rem 0.25rem !important;
    text-align: center !important;
    border: 1px solid #f1f5f9 !important;
  }
  .table-bzs-overview .cell-commercial {
    grid-area: commercial !important;
    background: #f8fafc !important;
    border-radius: var(--radius-sm) !important;
    padding: 0.45rem 0.25rem !important;
    text-align: center !important;
    border: 1px solid #f1f5f9 !important;
  }

  /* 2. Zinsrechner Results Table Cards on Mobile */
  table.table-zins-results,
  table.table-zins-results tbody {
    display: block !important;
    width: 100% !important;
  }
  table.table-zins-results thead {
    display: none !important;
  }
  .table-zins-results tr.zins-period-row {
    display: flex !important;
    flex-direction: column !important;
    background: #ffffff !important;
    border: 1px solid var(--border-light) !important;
    border-radius: var(--radius-md) !important;
    padding: 0.75rem 0.85rem !important;
    margin-bottom: 0.65rem !important;
    box-shadow: var(--shadow-sm) !important;
  }
  .table-zins-results .cell-period {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    border-bottom: 1px solid var(--border-light) !important;
    padding: 0 0 0.4rem 0 !important;
    margin-bottom: 0.4rem !important;
    font-weight: 700 !important;
    font-size: 0.95rem !important;
    color: var(--primary-900) !important;
    border-top: none !important;
    border-left: none !important;
    border-right: none !important;
  }
  .table-zins-results .cell-rate {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 0 0 0.3rem 0 !important;
    border: none !important;
    font-size: 0.85rem !important;
    color: var(--primary-700) !important;
  }
  .table-zins-results .cell-interest {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 0 !important;
    border: none !important;
    font-size: 1.05rem !important;
    color: var(--brand-blue) !important;
  }

  /* Results Table Summary Rows on Mobile */
  .table-zins-results tr.row-summary-item {
    display: flex !important;
    flex-direction: column !important;
    background: #f8fafc !important;
    border: 1px solid var(--border-medium) !important;
    border-radius: var(--radius-md) !important;
    padding: 0.75rem 0.85rem !important;
    margin-bottom: 0.65rem !important;
  }
  .table-zins-results tr.row-summary-item td {
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
  }
  .table-zins-results .cell-period-summary {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    border-bottom: 1px solid var(--border-light) !important;
    padding-bottom: 0.4rem !important;
    margin-bottom: 0.4rem !important;
    font-size: 0.9rem !important;
  }
  .table-zins-results tr.row-grand-total {
    background: linear-gradient(135deg, #1e40af, #1e3a8a) !important;
    border-color: #1e3a8a !important;
  }
  .table-zins-results tr.row-grand-total .cell-m-label {
    color: #93c5fd !important;
    font-size: 0.85rem !important;
  }
  .table-zins-results tr.row-grand-total .cell-val {
    color: #ffffff !important;
    font-size: 1.25rem !important;
    font-weight: 800 !important;
  }
}

/* ==========================================================================
   Print Stylesheet (Gerichtsfest & DIN-A4 optimiert)
   ========================================================================== */

.print-only-header,
.print-only-document {
  display: none;
}

@page {
  size: A4 portrait;
  margin: 12mm 14mm 12mm 14mm;

  @top-left { content: ""; }
  @top-center { content: ""; }
  @top-right { content: ""; }
  @bottom-left { content: ""; }
  @bottom-center { content: ""; }
  @bottom-right { content: ""; }
}

@media print {
  html, body {
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #ffffff !important;
    color: #0f172a !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif !important;
    font-size: 9.5pt !important;
    line-height: 1.4 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .site-header,
  .site-sidebar-col,
  .site-footer,
  .export-toolbar,
  .calc-action-bar,
  .btn-hero-cta,
  .btn-submit-wrap,
  .ad-card,
  nav,
  .nav-toggle,
  .screen-only-view,
  .mob-only,
  .cell-m-label {
    display: none !important;
  }

  .site-container,
  .site-main-wrap,
  .site-main-col {
    max-width: 100% !important;
    width: 100% !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    display: block !important;
  }

  .print-only-document {
    display: block !important;
    width: 100% !important;
  }

  /* Exaktes DIN-A4 Seiten-Container-Layout (297mm - 24mm Rand = 273mm verfügbar) */
  .print-a4-page {
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    width: 100% !important;
    height: 266mm !important;
    max-height: 266mm !important;
    box-sizing: border-box !important;
    page-break-after: always !important;
    break-after: page !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    overflow: hidden !important;
  }

  .print-a4-page:last-child {
    page-break-after: auto !important;
    break-after: auto !important;
  }

  .print-a4-body {
    flex: 1 1 auto !important;
    display: flex !important;
    flex-direction: column !important;
  }

  /* DIN-A4 Kopfbereich (Kein Umbruch bei "Uhr") */
  .print-doc-header {
    display: flex !important;
    justify-content: space-between !important;
    align-items: flex-end !important;
    gap: 16pt !important;
    border-bottom: 1.5pt solid #0f172a !important;
    padding-bottom: 8pt !important;
    margin-bottom: 14pt !important;
  }

  .print-doc-header-compact {
    margin-bottom: 10pt !important;
    padding-bottom: 6pt !important;
  }

  .print-doc-header-left {
    flex: 1 1 auto !important;
    min-width: 0 !important;
  }

  .print-doc-title {
    font-size: 15.5pt !important;
    font-weight: 800 !important;
    color: #0f172a !important;
    line-height: 1.15 !important;
    letter-spacing: -0.01em !important;
  }

  .print-doc-title-sm {
    font-size: 12.5pt !important;
    font-weight: 800 !important;
    color: #0f172a !important;
    line-height: 1.2 !important;
  }

  .print-doc-subtitle {
    font-size: 8.5pt !important;
    color: #475569 !important;
    margin-top: 3pt !important;
  }

  .print-doc-header-right {
    flex: 0 0 auto !important;
    text-align: right !important;
    font-size: 8.5pt !important;
    line-height: 1.35 !important;
    color: #475569 !important;
    white-space: nowrap !important;
  }

  .print-doc-header-right strong {
    font-size: 9.5pt !important;
    color: #0f172a !important;
    white-space: nowrap !important;
  }

  /* Ausgangsparameter Box (Seite 1) */
  .print-section-box {
    background: #f8fafc !important;
    border: 1pt solid #cbd5e1 !important;
    border-radius: 5pt !important;
    padding: 10pt 12pt !important;
    margin-bottom: 12pt !important;
  }

  .print-section-label {
    font-size: 8pt !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    color: #334155 !important;
    margin-bottom: 6pt !important;
  }

  .print-meta-table {
    width: 100% !important;
    border-collapse: collapse !important;
    font-size: 9.5pt !important;
  }

  .print-meta-table td {
    padding: 3pt 4pt !important;
    vertical-align: top !important;
    color: #0f172a !important;
  }

  .print-meta-key {
    width: 115pt !important;
    color: #475569 !important;
    white-space: nowrap !important;
  }

  /* 3er KPI-Zeile auf Seite 1 */
  .print-kpi-row {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 10pt !important;
    margin-bottom: 12pt !important;
  }

  .print-kpi-card {
    background: #ffffff !important;
    border: 1pt solid #cbd5e1 !important;
    border-radius: 5pt !important;
    padding: 9pt 11pt !important;
  }

  .print-kpi-label {
    font-size: 7.5pt !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.04em !important;
    color: #475569 !important;
    margin-bottom: 3pt !important;
  }

  .print-kpi-value {
    font-size: 13pt !important;
    font-weight: 800 !important;
    color: #0f172a !important;
    font-variant-numeric: tabular-nums !important;
    white-space: nowrap !important;
    line-height: 1.2 !important;
  }

  .print-kpi-blue {
    color: #1e40af !important;
  }

  .print-kpi-sub {
    font-size: 7.5pt !important;
    color: #64748b !important;
    margin-top: 3pt !important;
  }

  .print-kpi-highlight {
    background: #eff6ff !important;
    border: 1.5pt solid #1e40af !important;
  }

  .print-kpi-highlight .print-kpi-label,
  .print-kpi-highlight .print-kpi-value {
    color: #1e40af !important;
  }

  .print-kpi-highlight .print-kpi-sub {
    color: #334155 !important;
  }

  /* Fortlaufender Zins Banner (Seite 1) */
  .print-fortlauf-banner {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    gap: 12pt !important;
    background: #ffffff !important;
    border: 1pt solid #cbd5e1 !important;
    border-left: 3.5pt solid #b45309 !important;
    border-radius: 5pt !important;
    padding: 9pt 12pt !important;
    margin-bottom: 12pt !important;
  }

  .print-fortlauf-sub {
    font-size: 8.5pt !important;
    color: #475569 !important;
    margin-top: 2pt !important;
  }

  .print-fortlauf-amount {
    font-size: 11.5pt !important;
    font-weight: 800 !important;
    color: #b45309 !important;
    font-variant-numeric: tabular-nums !important;
    white-space: nowrap !important;
  }

  /* Gesetzliche Kriterien Box (Seite 1) */
  .print-criteria-card {
    background: #f8fafc !important;
    border: 1pt solid #cbd5e1 !important;
    border-radius: 5pt !important;
    padding: 10pt 12pt !important;
    font-size: 8.5pt !important;
    color: #334155 !important;
  }

  .print-criteria-title {
    font-weight: 700 !important;
    color: #0f172a !important;
    margin-bottom: 5pt !important;
    font-size: 9pt !important;
  }

  .print-criteria-list {
    margin: 0 !important;
    padding-left: 14pt !important;
    line-height: 1.5 !important;
  }

  .print-criteria-list li {
    margin-bottom: 2.5pt !important;
  }

  /* Zinsperioden-Tabelle ab Seite 2 */
  .print-zins-table {
    width: 100% !important;
    border-collapse: collapse !important;
    border: 1pt solid #334155 !important;
    font-size: 8.5pt !important;
    font-variant-numeric: tabular-nums !important;
  }

  .print-zins-table th,
  .print-zins-table td {
    border: 0.5pt solid #cbd5e1 !important;
    padding: 4pt 7pt !important;
    color: #0f172a !important;
    vertical-align: middle !important;
  }

  .print-zins-table th {
    background: #f1f5f9 !important;
    font-weight: 700 !important;
    border-bottom: 1pt solid #334155 !important;
    white-space: nowrap !important;
  }

  .print-zins-table tbody tr:nth-child(even) td {
    background: #fbfcfe !important;
  }

  .print-zins-table .text-left { text-align: left !important; }
  .print-zins-table .text-center { text-align: center !important; }
  .print-zins-table .text-right {
    text-align: right !important;
    white-space: nowrap !important;
  }

  .print-zins-table tr.print-row-total td {
    background: #f1f5f9 !important;
    border-top: 1.5pt solid #334155 !important;
    border-bottom: 1pt solid #334155 !important;
  }

  .print-zins-table tr.print-row-sub td {
    background: #f8fafc !important;
  }

  .print-zins-table tr.print-row-grand td {
    background: #eff6ff !important;
    color: #1e40af !important;
    font-size: 9.5pt !important;
    border-top: 1pt solid #1e40af !important;
    border-bottom: 1pt solid #1e40af !important;
  }

  .print-zins-table tr.print-row-fortlauf td {
    background: #fffbeb !important;
  }

  /* Einheitliche Fußzeile auf jeder DIN-A4 Seite */
  .print-a4-footer {
    flex: 0 0 auto !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    gap: 12pt !important;
    margin-top: auto !important;
    padding-top: 6pt !important;
    border-top: 0.75pt solid #94a3b8 !important;
    font-size: 7.5pt !important;
    color: #475569 !important;
  }

  .print-footer-left {
    flex: 1 1 auto !important;
  }

  .print-footer-right {
    flex: 0 0 auto !important;
    font-weight: 700 !important;
    color: #0f172a !important;
    white-space: nowrap !important;
  }

  a {
    color: #0f172a !important;
    text-decoration: none !important;
  }
}