/* ==========================================================================
   ACCSPERT SOFTWARE GMBH - CENTRAL DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

/* 1. RESET & CSS VARIABLES (DESIGN TOKENS) */
:root {
  /* Brand & Functional Colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-soft: rgba(37, 99, 235, 0.08);
  --color-secondary: #7c3aed;
  --color-secondary-hover: #6d28d9;
  --color-secondary-soft: rgba(124, 58, 237, 0.08);
  --color-accent: #06b6d4;
  --color-accent-hover: #0891b2;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Neutrals & Surfaces */
  --color-dark: #0f172a;
  --color-dark-surface: #1e293b;
  --color-dark-card: #1e293b;
  --color-light: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-dark: rgba(255, 255, 255, 0.12);

  /* Typography Colors */
  --color-text-main: #1e293b;
  --color-text-muted: #64748b;
  --color-text-white: #ffffff;
  --color-text-light: #94a3b8;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3.5rem;
  --spacing-xl: 5.5rem;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.35rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: 2.25rem;
  --font-size-4xl: 3rem;

  /* UI Tokens */
  --border-radius-sm: 0.375rem;
  --border-radius: 0.75rem;
  --border-radius-lg: 1.25rem;
  --border-radius-pill: 9999px;

  /* Shadows */
  --box-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --box-shadow-lg: 0 20px 40px -15px rgba(37, 99, 235, 0.18), 0 12px 20px -8px rgba(15, 23, 42, 0.1);
  --box-shadow-glow: 0 0 35px rgba(37, 99, 235, 0.35);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-family);
  font-size: 16px;
  scroll-behavior: smooth;
  color: var(--color-text-main);
  background-color: var(--color-light);
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

/* ==========================================================================
   2. TYPOGRAPHY & HEADINGS
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  color: var(--color-text-muted);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 700px;
}

/* ==========================================================================
   3. LAYOUT & CONTAINERS
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: var(--spacing-lg) 0;
  position: relative;
}

.section-dark {
  background-color: var(--color-dark);
  color: var(--color-text-white);
}

.section-dark h2, .section-dark h3 {
  color: var(--color-text-white);
}

.section-dark p {
  color: var(--color-text-light);
}

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto var(--spacing-lg) auto;
}

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 0.35rem 0.85rem;
  border-radius: var(--border-radius-pill);
  margin-bottom: 0.75rem;
}

.section-dark .section-tag {
  color: var(--color-accent);
  background: rgba(6, 182, 212, 0.15);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   4. BUTTONS & UI COMPONENTS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #1d4ed8);
  color: var(--color-text-white);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-secondary), #6d28d9);
  color: var(--color-text-white);
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-soft);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-text-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.btn-large {
  padding: 0.95rem 1.85rem;
  font-size: var(--font-size-base);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: var(--font-size-xs);
}

.badge {
  display: inline-block;
  font-size: 0.725rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--border-radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary { background: var(--color-primary-soft); color: var(--color-primary); }
.badge-secondary { background: var(--color-secondary-soft); color: var(--color-secondary); }
.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--color-success); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--color-warning); }

/* ==========================================================================
   5. HEADER & NAVIGATION
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo img {
  height: 42px;
  width: auto;
}

.nav {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-list a {
  font-weight: 500;
  color: var(--color-text-main);
  font-size: var(--font-size-sm);
  position: relative;
  padding: 0.4rem 0;
}

.nav-list a:not(.btn):hover,
.nav-list a.active {
  color: var(--color-primary);
}

.nav-list a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* Header Action Controls (Language & CTA) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-pill);
  padding: 0.2rem 0.35rem;
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.lang-switch a {
  padding: 0.25rem 0.55rem;
  border-radius: var(--border-radius-pill);
  color: var(--color-text-muted);
}

.lang-switch a.active {
  background: var(--color-primary);
  color: #ffffff;
}

.mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 22px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1100;
}

.mobile-toggle span {
  display: block;
  height: 2.5px;
  width: 100%;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* Mobile Menu Flyout */
@media (max-width: 991px) {
  .nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    display: none;
    transform: translateY(-10px);
    opacity: 0;
    transition: all var(--transition);
  }

  .nav.open {
    display: block;
    transform: translateY(0);
    opacity: 1;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    font-size: var(--font-size-base);
  }

  .nav-list .btn {
    width: 100%;
    margin-top: 0.5rem;
  }
}

@media (min-width: 992px) {
  .nav {
    display: block;
  }
  .mobile-toggle {
    display: none;
  }
}

/* ==========================================================================
   6. HERO SECTION
   ========================================================================== */
.hero {
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
  background: radial-gradient(circle at 85% 15%, rgba(37, 99, 235, 0.15) 0%, rgba(124, 58, 237, 0.08) 35%, transparent 70%),
              radial-gradient(circle at 15% 85%, rgba(6, 182, 212, 0.1) 0%, transparent 60%),
              linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  align-items: center;
}

@media (min-width: 992px) {
  .hero-inner {
    grid-template-columns: 1.15fr 1fr;
    gap: var(--spacing-lg);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.9rem;
  border-radius: var(--border-radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  box-shadow: var(--box-shadow-sm);
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: var(--font-size-4xl);
  }
}

.hero p {
  font-size: var(--font-size-lg);
  margin-bottom: 1.75rem;
  max-width: 580px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--color-border);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-dark);
}

.hero-stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--box-shadow-lg);
  width: 100%;
}

/* ==========================================================================
   7. PRODUCT SHOWCASE CARDS
   ========================================================================== */
.product-card {
  background: #ffffff;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--box-shadow-sm);
  transition: all var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--box-shadow-lg);
  border-color: rgba(37, 99, 235, 0.3);
}

.product-card-image {
  position: relative;
  background: #0f172a;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card-image img {
  transform: scale(1.04);
}

.product-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--border-radius-pill);
}

.product-card-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-card-content h3 {
  margin-bottom: 0.5rem;
}

.product-card-content p {
  font-size: var(--font-size-sm);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.product-feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
}

.product-feature-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
  flex-shrink: 0;
}

/* ==========================================================================
   8. VALUE PROPOSITIONS & FEATURE ICONS
   ========================================================================== */
.feature-box {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  transition: all var(--transition);
}

.feature-box:hover {
  border-color: var(--color-primary);
  box-shadow: var(--box-shadow);
  transform: translateY(-4px);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--border-radius);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-icon-wrapper svg {
  width: 26px;
  height: 26px;
}

.feature-box h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 0.5rem;
}

.feature-box p {
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   9. PRICING TABLES
   ========================================================================== */
.pricing-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: 2.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition);
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--box-shadow-lg);
  transform: scale(1.03);
}

.pricing-featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #ffffff;
  padding: 0.25rem 0.85rem;
  border-radius: var(--border-radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pricing-header {
  margin-bottom: 1.5rem;
  text-align: center;
}

.pricing-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 0.25rem;
}

.pricing-period {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.pricing-features-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--font-size-sm);
  color: var(--color-dark);
}

.pricing-feature-item.muted {
  color: var(--color-text-light);
  text-decoration: line-through;
}

/* ==========================================================================
   10. FORMS & INPUTS
   ========================================================================== */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background: #ffffff;
  color: var(--color-dark);
  transition: all var(--transition-fast);
}

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

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-feedback {
  display: none;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-top: 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  color: #065f46;
  border: 1px solid #10b981;
}

.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  color: #991b1b;
  border: 1px solid #ef4444;
}

/* ==========================================================================
   11. FOOTER
   ========================================================================== */
.footer {
  background: var(--color-dark);
  color: var(--color-text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-col-brand img {
  height: 38px;
  margin-bottom: 1rem;
}

.footer-col-brand p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  max-width: 320px;
  margin-bottom: 1.25rem;
}

.footer-col h4 {
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.footer-links a:hover {
  color: #38bdf8;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: var(--font-size-xs);
  color: #64748b;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

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

/* ==========================================================================
   12. TOAST NOTIFICATION
   ========================================================================== */
.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #0f172a;
  color: #ffffff;
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(56, 189, 248, 0.4);
  box-shadow: var(--box-shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 2000;
  transform: translateY(100px);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
}

.toast-notification.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}