/* ==========================================================================
   arbeitszeitrechner365.de - Design System & Modern Stylesheet
   Theme: Professional Light Theme (Navy/Slate Blue & Clean White / Green Accents)
   Inspired by top German financial tools (finanz-tools.de, smart-rechner.de)
   ========================================================================== */

:root {
  /* Color Palette - Light Theme */
  --bg-dark: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-glass: #ffffff;
  --bg-glass-card: #ffffff;
  
  --header-navy: #2c4a6f;
  --header-navy-hover: #1e3654;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-glow: rgba(37, 99, 235, 0.15);

  --btn-green: #16a34a;
  --btn-green-hover: #15803d;
  --btn-green-light: #f0fdf4;

  --accent-teal: #0d9488;
  --accent-teal-light: #f0fdfa;
  --accent-amber: #d97706;
  --accent-amber-light: #fffbeb;
  --accent-red: #dc2626;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  
  --border-subtle: #e2e8f0;
  --border-glow: #cbd5e1;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Radii & Shadows */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 15px rgba(37, 99, 235, 0.2);
}

/* CSS Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-dark);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--header-navy);
  letter-spacing: -0.5px;
}

.brand-logo svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.brand-logo span.highlight {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-main);
  background: var(--bg-surface-elevated);
  text-decoration: none;
}

.header-cta {
  background: var(--btn-green);
  color: #ffffff !important;
  font-weight: 600;
  padding: 0.5rem 1.1rem !important;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px rgba(22, 163, 74, 0.25);
  transition: background 0.2s ease;
}

.header-cta:hover {
  background: var(--btn-green-hover);
  text-decoration: none;
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 1.5rem 2rem;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-light);
  border: 1px solid #bfdbfe;
  color: var(--primary);
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: clamp(2rem, 3.5vw + 1rem, 3rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--header-navy);
  letter-spacing: -0.75px;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 1.75rem;
  line-height: 1.6;
}

.hero-trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: #ffffff;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  font-weight: 500;
}

/* Calculator Wrapper & Container */
.calculator-section {
  max-width: 1050px;
  margin: 0 auto 3.5rem;
  padding: 0 1.5rem;
}

.calculator-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* Header Bar inside Calculator (Navy Bar inspired by finanz-tools.de) */
.calc-tabs {
  display: flex;
  background: var(--header-navy);
  border-bottom: 1px solid var(--border-subtle);
}

.tab-btn {
  flex: 1;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  color: #cbd5e1;
  font-size: 0.975rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  border-bottom: 4px solid transparent;
}

.tab-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.tab-btn.active {
  color: #ffffff;
  border-bottom-color: var(--btn-green);
  background: rgba(255, 255, 255, 0.12);
  font-weight: 700;
}

/* Calculator Body Layout */
.calc-content {
  padding: 2rem;
  background: #ffffff;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
}

@media (max-width: 880px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

/* Form Groups & Inputs */
.form-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--header-navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.presets-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.preset-chip {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 50px;
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.preset-chip:hover {
  background: var(--primary-light);
  border-color: #93c5fd;
  color: var(--primary);
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 500px) {
  .input-row {
    grid-template-columns: 1fr;
  }
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.input-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.input-field {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  color: var(--text-main);
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 1.025rem;
  font-family: inherit;
  width: 100%;
  transition: all 0.2s ease;
}

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

/* Dynamic Breaks list */
.breaks-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.break-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-surface-elevated);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.break-item input {
  flex: 1;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--accent-red);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.btn-icon:hover {
  background: rgba(220, 38, 38, 0.1);
}

.add-break-btn {
  background: #ffffff;
  border: 1.5px dashed var(--primary);
  color: var(--primary);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  width: 100%;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.add-break-btn:hover {
  background: var(--primary-light);
  border-style: solid;
}

/* Checkbox Toggle */
.checkbox-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--primary-light);
  border: 1px solid #bfdbfe;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  margin-bottom: 1.5rem;
}

.checkbox-option input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

.checkbox-option-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--header-navy);
}

.checkbox-option-sub {
  font-size: 0.785rem;
  color: var(--text-muted);
  display: block;
}

/* Results Panel (Output Card) */
.result-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-md);
}

.result-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}

.result-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  font-weight: 700;
}

.big-result-box {
  background: var(--primary-light);
  border: 1.5px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}

.big-result-val {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--header-navy);
  line-height: 1;
  margin-bottom: 0.35rem;
  font-feature-settings: "tnum";
}

.big-result-decimal {
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--btn-green);
}

.result-breakdown {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.stat-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  text-align: center;
}

.stat-label {
  font-size: 0.775rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.stat-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.legal-status-indicator {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.legal-status-indicator.ok {
  background: var(--btn-green-light);
  border: 1px solid #bbf7d0;
  color: #15803d;
}

.legal-status-indicator.warning {
  background: var(--accent-amber-light);
  border: 1px solid #fde68a;
  color: #b45309;
}

.action-buttons-group {
  display: flex;
  gap: 0.5rem;
}

.btn-secondary {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: #e2e8f0;
  border-color: #cbd5e1;
}

/* Weekly Table Styling */
.weekly-table-container {
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.weekly-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.weekly-table th {
  background: var(--header-navy);
  color: #ffffff;
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
}

.weekly-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.weekly-table tr:nth-child(even) {
  background: var(--bg-surface-elevated);
}

.weekly-table input {
  padding: 0.4rem 0.6rem;
  font-size: 0.875rem;
}

/* Content Sections Base */
.content-container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.content-block {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
}

@media (max-width: 600px) {
  .content-block {
    padding: 1.5rem;
  }
}

.section-h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--header-navy);
  margin-bottom: 1.25rem;
  letter-spacing: -0.5px;
  line-height: 1.3;
}

.section-h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin: 1.5rem 0 0.75rem;
}

.content-block p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.025rem;
  line-height: 1.7;
}

.content-block ul, .content-block ol {
  margin: 0 0 1.25rem 1.5rem;
  color: var(--text-muted);
}

.content-block li {
  margin-bottom: 0.5rem;
}

/* Rich Tables in Content */
.data-table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.data-table th {
  background: var(--header-navy);
  color: #ffffff;
  text-align: left;
  padding: 0.85rem 1.1rem;
  font-weight: 700;
  font-size: 0.95rem;
}

.data-table td {
  padding: 0.8rem 1.1rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.925rem;
}

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

.data-table tr:nth-child(even) {
  background: var(--bg-surface-elevated);
}

/* Callout Boxes / Quotes */
.legal-callout {
  background: var(--accent-teal-light);
  border-left: 4px solid var(--accent-teal);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: var(--text-main);
}

.legal-callout strong {
  color: #0f766e;
}

/* Grid Cards (Use-cases & Features) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.feature-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
}

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  display: block;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--header-navy);
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Accordion / FAQ Block */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.faq-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 1.1rem 1.35rem;
  text-align: left;
  color: var(--header-navy);
  font-size: 1.025rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.35rem;
  color: var(--text-muted);
  font-size: 0.975rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 1.35rem 1.25rem;
}

/* Footer Section */
.site-footer {
  background: var(--header-navy);
  color: #cbd5e1;
  padding: 3rem 1.5rem 2rem;
  margin-top: auto;
  font-size: 0.9rem;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
  }
}

.footer-brand .brand-logo {
  color: #ffffff;
}

.footer-brand p {
  margin-top: 0.75rem;
  color: #94a3b8;
  font-size: 0.875rem;
}

.footer-title {
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: #cbd5e1;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.825rem;
  color: #94a3b8;
}

.footer-bottom a {
  color: #cbd5e1;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--header-navy);
  border: 1px solid var(--btn-green);
  color: #ffffff;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  z-index: 999;
  transform: translateY(150%);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  font-weight: 600;
  font-size: 0.9rem;
}

.toast.show {
  transform: translateY(0);
}