/* =============================================
   Comngo LLC - Shared Stylesheet
   ============================================= */

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #1a365d;
  --color-primary-light: #2c5282;
  --color-primary-dark: #1a202c;
  --color-bg-alt: #f7fafc;
  --color-white: #ffffff;
  --color-gray-100: #f7fafc;
  --color-gray-200: #edf2f7;
  --color-gray-300: #e2e8f0;
  --color-gray-500: #718096;
  --color-gray-600: #4a5568;
  --color-gray-700: #2d3748;
  --color-gray-800: #1a202c;

  /* Product accents */
  --color-beeasy: #319795;
  --color-beeasy-light: #38b2ac;
  --color-elifim: #805ad5;
  --color-elifim-light: #9f7aea;
  --color-beeasybot: #0088cc;
  --color-beeasybot-light: #29a8e0;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 70px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--color-gray-700);
  background-color: var(--color-white);
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  color: var(--color-gray-800);
  font-weight: 700;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

@media (min-width: 1024px) {
  h1 { font-size: var(--font-size-5xl); }
  h2 { font-size: var(--font-size-4xl); }
}

p {
  margin-bottom: var(--spacing-md);
}

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

@media (min-width: 640px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

.section {
  padding: var(--spacing-2xl) 0;
}

@media (min-width: 1024px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  color: var(--color-gray-600);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

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

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

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

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

@media (min-width: 640px) {
  .grid-2 { 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); }
}

/* =============================================
   Header / Navigation
   ============================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.logo span {
  color: var(--color-gray-500);
  font-weight: 400;
}

/* Mobile Menu Toggle (CSS-only) */
.menu-toggle {
  display: none;
}

.menu-toggle-label {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  cursor: pointer;
}

.menu-toggle-label span {
  display: block;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-md);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.menu-toggle:checked ~ .nav {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.menu-toggle:checked ~ .menu-toggle-label span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle:checked ~ .menu-toggle-label span:nth-child(2) {
  opacity: 0;
}

.menu-toggle:checked ~ .menu-toggle-label span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-gray-700);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .menu-toggle-label {
    display: none;
  }

  .nav {
    position: static;
    background: transparent;
    box-shadow: none;
    padding: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xs);
  }

  .nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* =============================================
   Buttons
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-primary-light);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-beeasy {
  background: var(--color-beeasy);
  color: var(--color-white);
}

.btn-beeasy:hover,
.btn-beeasy:focus {
  background: var(--color-beeasy-light);
}

.btn-elifim {
  background: var(--color-elifim);
  color: var(--color-white);
}

.btn-elifim:hover,
.btn-elifim:focus {
  background: var(--color-elifim-light);
}

.btn-beeasybot {
  background: var(--color-beeasybot);
  color: var(--color-white);
}

.btn-beeasybot:hover,
.btn-beeasybot:focus {
  background: var(--color-beeasybot-light);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 700px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .hero p {
    font-size: var(--font-size-xl);
  }
}

/* Product Hero (smaller variant) */
.hero-product {
  min-height: 60vh;
  text-align: center;
}

.hero-product .hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-product.beeasy {
  background-color: var(--color-beeasy);
}

.hero-product.elifim {
  background-color: var(--color-elifim);
}

.hero-product.beeasybot {
  background-color: var(--color-beeasybot);
}

/* =============================================
   Trust Bar
   ============================================= */
.trust-bar {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  text-align: center;
}

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

.trust-stat {
  padding: var(--spacing-md);
}

.trust-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  display: block;
}

.trust-stat-label {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* =============================================
   Cards
   ============================================= */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--color-gray-600);
}

/* Product Cards */
.product-card {
  border-top: 4px solid var(--color-primary);
}

.product-card.beeasy {
  border-top-color: var(--color-beeasy);
}

.product-card.elifim {
  border-top-color: var(--color-elifim);
}

.product-card.beeasybot {
  border-top-color: var(--color-beeasybot);
}

.product-card .card-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.product-card.beeasy .card-icon {
  background: rgba(49, 151, 149, 0.1);
  color: var(--color-beeasy);
}

.product-card.elifim .card-icon {
  background: rgba(128, 90, 213, 0.1);
  color: var(--color-elifim);
}

.product-card.beeasybot .card-icon {
  background: rgba(0, 136, 204, 0.1);
  color: var(--color-beeasybot);
}

.product-card ul {
  margin: var(--spacing-md) 0;
}

.product-card li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-gray-600);
}

.product-card li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-beeasy);
  font-weight: bold;
}

.product-card.elifim li::before {
  color: var(--color-elifim);
}

.product-card.beeasybot li::before {
  color: var(--color-beeasybot);
}

/* Feature Cards */
.feature-card {
  text-align: center;
  padding: var(--spacing-xl);
}

.feature-card .card-icon {
  width: 80px;
  height: 80px;
  background: var(--color-bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
}

/* =============================================
   Screenshots Section
   ============================================= */
.screenshots {
  display: grid;
  gap: var(--spacing-xl);
}

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

.screenshot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.screenshot img {
  width: 100%;
  display: block;
}

.screenshot-caption {
  background: var(--color-gray-800);
  color: var(--color-white);
  padding: var(--spacing-md);
  text-align: center;
  font-weight: 500;
}

/* =============================================
   Supplier Logos Section
   ============================================= */
.suppliers {
  text-align: center;
}

.supplier-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.supplier-tag {
  background: var(--color-bg-alt);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
}

/* =============================================
   CTA Section
   ============================================= */
.cta-section {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-3xl) 0;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-group {
  justify-content: center;
}

.cta-section .btn-secondary {
  border-color: var(--color-white);
  color: var(--color-white);
}

.cta-section .btn-secondary:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

/* =============================================
   Footer
   ============================================= */
.footer {
  background: var(--color-gray-800);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

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

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  display: inline-block;
}

.footer-brand p {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.footer h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-base);
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-gray-400);
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

/* =============================================
   Accessibility & Focus States
   ============================================= */
:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 9999;
}

.skip-link:focus {
  top: 0;
}

/* =============================================
   Utility Classes
   ============================================= */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* Visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}