/* Cervexa Digital - Premium B2B Technology Consulting CSS */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Color Palette */
  --color-bg-main: #FFFFFF;
  --color-bg-subtle: #F8FAFC;
  --color-bg-card: #FFFFFF;
  --color-bg-alt: #F1F5F9;
  --color-bg-dark: #0B0F19;
  --color-bg-dark-card: #151D2F;

  --color-text-main: #0F172A;
  --color-text-secondary: #334155;
  --color-text-muted: #64748B;
  --color-text-light: #F8FAFC;
  --color-text-dark-muted: #94A3B8;

  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-primary-light: #EFF6FF;
  --color-primary-border: #BFDBFE;

  --color-indigo: #4F46E5;
  --color-cyan: #06B6D4;
  --color-teal: #0D9488;
  --color-teal-light: #CCFBF1;

  --color-border: #E2E8F0;
  --color-border-hover: #CBD5E1;

  --gradient-primary: linear-gradient(135deg, #2563EB 0%, #4F46E5 100%);
  --gradient-text: linear-gradient(135deg, #0F172A 0%, #2563EB 100%);
  --gradient-accent: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -6px rgba(15, 23, 42, 0.09), 0 8px 12px -6px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 24px 48px -12px rgba(15, 23, 42, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1240px;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-main);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Background Patterns & Grid Overlay */
.bg-grid {
  background-image: radial-gradient(rgba(37, 99, 235, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-main);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
}

p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

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

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5.5rem 0;
}

.section-alt {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.section-dark h2, .section-dark h3, .section-dark h4 {
  color: #FFFFFF;
}

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

.text-center {
  text-align: center;
}

.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.95rem;
  border-radius: var(--radius-full);
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.section-header {
  max-width: 780px;
  margin-bottom: 3.5rem;
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-header p {
  margin-top: 1rem;
  font-size: 1.15rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
  color: #FFFFFF;
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--color-text-main);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
}

/* Header & Nav */
.header-sticky {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--color-text-main);
  letter-spacing: -0.03em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

/* Mega Dropdown */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 660px;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1050;
}

.nav-item:hover .mega-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.mega-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.85rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.mega-item:hover {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-border);
}

.mega-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mega-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.925rem;
  color: var(--color-text-main);
  margin-bottom: 0.2rem;
}

.mega-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.35;
}

.mega-footer {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text-main);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 320px;
  background-color: #FFFFFF;
  z-index: 2000;
  box-shadow: var(--shadow-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1999;
  display: none;
}

.mobile-drawer-overlay.active {
  display: block;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.mobile-subnav {
  list-style: none;
  padding-left: 1rem;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.mobile-subnav a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* Cards & Grid Layouts */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}

.card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-xl);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  border: 1px solid var(--color-primary-border);
}

.card-icon-teal {
  background-color: var(--color-teal-light);
  color: var(--color-teal);
  border-color: #99F6E4;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  flex-grow: 1;
  margin-bottom: 1.5rem;
}

.card-capabilities {
  list-style: none;
  margin-bottom: 1.5rem;
  border-top: 1px solid var(--color-bg-alt);
  padding-top: 1rem;
}

.card-capabilities li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.card-capabilities li::before {
  content: "";
  width: 5px;
  height: 5px;
  background-color: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Trust Strip */
.trust-strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background-color: #FFFFFF;
  padding: 2.25rem 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-main);
  background-color: var(--color-bg-subtle);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.trust-icon {
  color: var(--color-teal);
}

/* Process Workflow */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.process-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.process-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-lg);
}

.process-step-num {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 0.5rem;
}

/* Industries served grid */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.industry-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all var(--transition-fast);
}

.industry-card:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: #FFFFFF;
  overflow: hidden;
}

.faq-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
  cursor: pointer;
}

.faq-button:hover {
  color: var(--color-primary);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
  padding: 0 1.5rem;
}

.faq-item.open .faq-content {
  max-height: 200px;
  padding: 0 1.5rem 1.25rem 1.5rem;
}

.faq-icon-arrow {
  transition: transform 0.25s;
}

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

/* Breadcrumbs */
.breadcrumbs-nav {
  padding: 1.25rem 0;
  background-color: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumbs-list a {
  color: var(--color-text-muted);
}

.breadcrumbs-list a:hover {
  color: var(--color-primary);
}

/* Interactive SVG Diagrams & Simulators */
.visual-canvas {
  background: linear-gradient(145deg, #0B0F19 0%, #151D2F 100%);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-xl);
  padding: 2rem;
  color: #FFFFFF;
}

.visual-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.visual-dots { display: flex; gap: 0.4rem; }
.visual-dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.visual-tab-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #FFFFFF;
  padding: 0.65rem 0.5rem;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s;
}

.visual-tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* Form Styling */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.form-label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
}

.form-control {
  padding: 0.85rem 1.15rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

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

.form-control.error {
  border-color: #EF4444;
}

.form-error-msg {
  font-size: 0.825rem;
  color: #EF4444;
}

.form-success-box {
  background-color: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: #166534;
  display: none;
}

.form-success-box.active {
  display: block;
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: 4.5rem 0 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.5fr 1.2fr 1.5fr 1.8fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  color: var(--color-text-dark-muted);
  margin-top: 1.25rem;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: var(--color-text-dark-muted);
  font-size: 0.925rem;
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-text-dark-muted);
  font-size: 0.925rem;
  margin-bottom: 0.75rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--color-text-dark-muted);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .grid-4, .trust-grid, .process-grid, .industries-grid, .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .mega-dropdown {
    width: 580px;
  }
}

@media (max-width: 768px) {
  .nav-menu, .header-cta {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .grid-2, .grid-3, .grid-4, .trust-grid, .process-grid, .industries-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 3.5rem 0;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}