/* SDSI Business Systems - Premium Professional Website Styles */
/* Color Palette: Deep Navy + Professional Blue + Dark Grays + Clean Whites */

:root {
  --sdsi-navy: #0F2744;
  --sdsi-navy-dark: #0A1F35;
  --sdsi-blue: #2563EB;
  --sdsi-blue-light: #3B82F6;
  --sdsi-blue-lighter: #60A5FA;
  --sdsi-gray-900: #111827;
  --sdsi-gray-800: #1F2937;
  --sdsi-gray-700: #374151;
  --sdsi-gray-600: #4B5563;
  --sdsi-gray-500: #6B7280;
  --sdsi-gray-400: #9CA3AF;
  --sdsi-gray-300: #D1D5DB;
  --sdsi-gray-200: #E5E7EB;
  --sdsi-gray-100: #F3F4F6;
  --sdsi-gray-50: #F8FAFC;
  --sdsi-white: #FFFFFF;
  --sdsi-accent-warm: #D97706; /* Subtle construction accent */
}

/* Base Typography & Reset Polish */
body {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Premium Headings */
h1, h2, h3, .heading {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-weight: 700;
  letter-spacing: -0.025em;
}

h1 { line-height: 1.05; }
h2 { line-height: 1.1; }

/* Professional Navbar */
.navbar {
  backdrop-filter: blur(12px);
  background-color: rgba(255, 255, 255, 0.95);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-scrolled {
  box-shadow: 0 1px 0 0 rgba(15, 39, 68, 0.06);
  background-color: rgba(255, 255, 255, 0.98);
}

/* Premium Buttons */
.btn-primary {
  background-color: var(--sdsi-blue);
  color: white;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 0.5rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.btn-primary:hover {
  background-color: #1E40AF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: transparent;
  color: var(--sdsi-navy);
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  border: 1.5px solid var(--sdsi-gray-300);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  background-color: var(--sdsi-gray-50);
  border-color: var(--sdsi-gray-400);
  color: var(--sdsi-navy-dark);
}

.btn-outline-light {
  background-color: transparent;
  color: white;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 0.5rem;
  border: 2px solid rgba(255,255,255,0.9);
  transition: all 0.2s ease;
}

.btn-outline-light:hover {
  background-color: white;
  color: var(--sdsi-navy);
  border-color: white;
}

/* Cards & Surfaces */
.card {
  background-color: var(--sdsi-white);
  border-radius: 0.75rem;
  border: 1px solid var(--sdsi-gray-200);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
              box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  border-color: var(--sdsi-gray-300);
}

.feature-card {
  padding: 1.75rem;
}

.feature-card .icon-wrap {
  width: 3rem;
  height: 3rem;
  border-radius: 0.625rem;
  background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 1.25rem;
}

/* Product Mockup Styling */
.mockup-frame {
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  border: 1px solid var(--sdsi-gray-200);
  background: #0F172A;
}

.mockup-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* Section Spacing & Dividers */
.section {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

@media (max-width: 768px) {
  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }
}

/* Premium Stats / Numbers */
.stat-number {
  font-variant-numeric: tabular-nums;
}

/* Form Styling */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--sdsi-gray-300);
  border-radius: 0.5rem;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  background-color: var(--sdsi-white);
}

.form-input:focus {
  outline: none;
  border-color: var(--sdsi-blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder {
  color: var(--sdsi-gray-400);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--sdsi-gray-700);
  margin-bottom: 0.5rem;
}

/* Navigation Active States */
.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--sdsi-gray-700);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--sdsi-navy);
}

.nav-link.active {
  color: var(--sdsi-navy);
  font-weight: 600;
}

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

/* Mobile Menu */
.mobile-menu {
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

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

/* Testimonials */
.testimonial {
  position: relative;
}

.testimonial::before {
  content: '“';
  position: absolute;
  top: -0.75rem;
  left: 0.25rem;
  font-size: 6rem;
  font-family: Georgia, serif;
  color: var(--sdsi-gray-200);
  line-height: 1;
  pointer-events: none;
}

/* Gallery & Image Polish */
.image-container {
  overflow: hidden;
  border-radius: 0.75rem;
}

.image-container img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.image-container:hover img {
  transform: scale(1.035);
}

/* Footer */
.footer-link {
  color: var(--sdsi-gray-400);
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--sdsi-gray-200);
}

/* Utility */
.text-balance {
  text-wrap: balance;
}

/* Focus Visible for Accessibility */
:focus-visible {
  outline: 2px solid var(--sdsi-blue);
  outline-offset: 3px;
}

/* Subtle Construction Accents */
.accent-bar {
  height: 3px;
  background: linear-gradient(to right, var(--sdsi-blue), var(--sdsi-blue-light));
  border-radius: 9999px;
}

/* Product page specifics */
.product-nav {
  border-bottom: 1px solid var(--sdsi-gray-200);
}

.product-nav a {
  padding-bottom: 0.875rem;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  font-weight: 600;
  color: var(--sdsi-gray-600);
  transition: all 0.2s ease;
}

.product-nav a.active {
  color: var(--sdsi-navy);
  border-bottom-color: var(--sdsi-blue);
}

/* Toast / Success */
.toast {
  animation: slideUp 0.3s ease forwards;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Typography Boost */
@media (min-width: 1024px) {
  .hero-headline {
    font-size: 3.25rem;
    line-height: 1.05;
  }
}