/* ============================================================
   Ozmoon Tech Services — main.css
   Responsive, accessible, professional static-site stylesheet
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #0b3d91;
  --color-primary-dark: #082a66;
  --color-primary-light: #1a5fcb;
  --color-accent: #00b4d8;
  --color-accent-dark: #0096b7;
  --color-white: #ffffff;
  --color-off-white: #f4f6f9;
  --color-light-gray: #e2e6ec;
  --color-mid-gray: #6b7b8d;
  --color-dark-gray: #3a4553;
  --color-text: #1e2a38;
  --color-footer-bg: #0d1b2a;
  --color-footer-text: #c5cdd8;
  --color-success: #2ecc71;
  --color-error: #e74c3c;
  --font-heading: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --transition: .25s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover, a:focus-visible { color: var(--color-accent); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary-dark);
  line-height: 1.25;
  margin-bottom: .5em;
}
h1 { font-size: 2.5rem; font-weight: 800; }
h2 { font-size: 2rem; font-weight: 700; }
h3 { font-size: 1.4rem; font-weight: 600; }
h4 { font-size: 1.15rem; font-weight: 600; }

p { margin-bottom: 1rem; }

ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }

/* --- Utility Classes --- */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }
.text-center { text-align: center; }
.text-white { color: var(--color-white); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.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;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: .75rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.4;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn-accent:hover, .btn-accent:focus-visible {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
}
.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}
.btn-white:hover, .btn-white:focus-visible {
  background: var(--color-off-white);
  color: var(--color-primary-dark);
}
.btn + .btn { margin-left: .75rem; }

/* --- Header & Navigation --- */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-light-gray);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.site-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.site-logo span { color: var(--color-accent); }
.site-logo:hover { color: var(--color-primary-dark); }

/* Desktop nav */
.main-nav { display: flex; align-items: center; gap: .15rem; list-style: none; padding: 0; margin: 0; }
.main-nav > li { position: relative; }
.main-nav > li > a {
  display: block;
  padding: .6rem 1rem;
  font-weight: 500;
  font-size: .95rem;
  color: var(--color-dark-gray);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.main-nav > li > a:hover,
.main-nav > li > a:focus-visible,
.main-nav > li > a[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-off-white);
}

/* Dropdown */
.has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-left: 6px;
  vertical-align: middle;
  transition: transform var(--transition);
}
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: .5rem 0;
  margin: 0;
  z-index: 999;
}
.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown,
.has-dropdown.open > .dropdown { display: block; }
.has-dropdown:hover > a::after { transform: rotate(-135deg); }
.dropdown li a {
  display: block;
  padding: .55rem 1.25rem;
  font-size: .9rem;
  color: var(--color-dark-gray);
  transition: all var(--transition);
}
.dropdown li a:hover,
.dropdown li a:focus-visible {
  background: var(--color-off-white);
  color: var(--color-primary);
}

/* Header CTAs */
.header-ctas {
  display: flex;
  align-items: center;
  gap: .75rem;
}
.header-ctas .btn { padding: .5rem 1.2rem; font-size: .9rem; }

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 1001;
}
.menu-toggle .bar {
  display: block;
  width: 26px;
  height: 3px;
  margin: 5px auto;
  background: var(--color-dark-gray);
  border-radius: 2px;
  transition: all .3s ease;
}
.menu-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(0,180,216,.1);
  border-radius: 50%;
}
.hero h1 {
  font-size: 3rem;
  color: var(--color-white);
  margin-bottom: .75rem;
  position: relative;
}
.hero .lead {
  font-size: 1.2rem;
  opacity: .92;
  max-width: 650px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-image {
  margin-top: 3rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Section Defaults --- */
.section {
  padding: 5rem 0;
}
.section-alt {
  background: var(--color-off-white);
}
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header p {
  font-size: 1.1rem;
  color: var(--color-mid-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Card Grid --- */
.card-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  transition: all var(--transition);
  border: 1px solid var(--color-light-gray);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.card h3 { color: var(--color-primary); margin-bottom: .5rem; }
.card p { color: var(--color-mid-gray); font-size: .95rem; }
.card-icon {
  width: 56px;
  height: 56px;
  background: var(--color-off-white);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  color: var(--color-primary);
}
.card-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  font-size: .95rem;
  color: var(--color-primary);
}
.card-link:hover { color: var(--color-accent); }
.card-link::after { content: ' →'; }

/* Image cards */
.card-img {
  padding: 0;
  overflow: hidden;
}
.card-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0;
}
.card-img .card-body { padding: 1.5rem 2rem; }

/* --- Why / Features Section --- */
.features-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.feature-item {
  text-align: center;
  padding: 1.5rem;
}
.feature-item .icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-accent);
}
.feature-item h3 { font-size: 1.15rem; }
.feature-item p { font-size: .95rem; color: var(--color-mid-gray); }

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: 4rem 0;
  text-align: center;
}
.cta-banner h2 { color: var(--color-white); font-size: 2rem; margin-bottom: .5rem; }
.cta-banner p { opacity: .9; margin-bottom: 1.5rem; font-size: 1.1rem; }

/* --- Breadcrumb --- */
.breadcrumb {
  padding: 1rem 0;
  font-size: .9rem;
  color: var(--color-mid-gray);
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { margin: 0 .4rem; }

/* --- Page Header (inner pages) --- */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: 3.5rem 0 3rem;
  text-align: center;
}
.page-header h1 { color: var(--color-white); font-size: 2.4rem; margin-bottom: .4rem; }
.page-header p { opacity: .9; font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* --- Forms --- */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: .35rem;
  font-size: .95rem;
  color: var(--color-dark-gray);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .7rem 1rem;
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11,61,145,.12);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group .error-msg {
  color: var(--color-error);
  font-size: .85rem;
  margin-top: .3rem;
  display: none;
}
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--color-error);
}
.form-group.has-error .error-msg { display: block; }

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  margin-bottom: 1.25rem;
}
.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: .3rem;
  accent-color: var(--color-primary);
}
.checkbox-group label {
  font-weight: 400;
  font-size: .9rem;
  color: var(--color-mid-gray);
}

.form-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 2.5rem;
}

/* --- Contact / Support Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}
.sidebar-card {
  background: var(--color-off-white);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--color-light-gray);
}
.sidebar-card h3 { font-size: 1.1rem; margin-bottom: 1rem; }
.sidebar-card p { font-size: .95rem; color: var(--color-mid-gray); margin-bottom: .75rem; }
.sidebar-card a { font-weight: 600; }

/* --- FAQ Accordion --- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--color-light-gray);
}
.faq-item details { padding: 0; }
.faq-item summary {
  padding: 1.25rem 2.5rem 1.25rem 0;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  position: relative;
  color: var(--color-dark-gray);
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition);
}
.faq-item details[open] summary::after {
  content: '−';
}
.faq-item summary:hover { color: var(--color-primary); }
.faq-item .faq-answer {
  padding: 0 0 1.25rem;
  color: var(--color-mid-gray);
  font-size: .95rem;
  line-height: 1.7;
}

/* --- Blog --- */
.blog-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.blog-card {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-light-gray);
  overflow: hidden;
  transition: all var(--transition);
}
.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.blog-card .blog-body { padding: 1.5rem; }
.blog-card .blog-meta {
  font-size: .85rem;
  color: var(--color-mid-gray);
  margin-bottom: .5rem;
}
.blog-card h3 { font-size: 1.15rem; }
.blog-card h3 a { color: var(--color-primary-dark); }
.blog-card h3 a:hover { color: var(--color-accent); }
.blog-card p { font-size: .93rem; color: var(--color-mid-gray); }

/* Blog Post */
.blog-post { max-width: 780px; margin: 0 auto; }
.blog-post h1 { font-size: 2.2rem; margin-bottom: .5rem; }
.blog-post .post-meta { color: var(--color-mid-gray); margin-bottom: 2rem; font-size: .95rem; }
.blog-post .post-content p { margin-bottom: 1.25rem; }
.blog-post .post-content h2 { font-size: 1.6rem; margin-top: 2.5rem; }

/* --- Careers --- */
.job-listing {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: box-shadow var(--transition);
}
.job-listing:hover { box-shadow: var(--shadow-md); }
.job-listing h3 { margin-bottom: .25rem; }
.job-meta {
  font-size: .9rem;
  color: var(--color-mid-gray);
  margin-bottom: .75rem;
}
.job-meta span + span::before { content: '  •  '; }

/* --- Footer --- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 4rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand p { font-size: .9rem; line-height: 1.7; opacity: .85; margin-top: .75rem; }
.site-footer h4 {
  color: var(--color-white);
  font-size: .95rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 1rem;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: .5rem; }
.footer-links a {
  color: var(--color-footer-text);
  font-size: .9rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-accent); }
.footer-contact p {
  font-size: .9rem;
  margin-bottom: .5rem;
  opacity: .85;
}
.footer-contact a { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 1.5rem 0;
  text-align: center;
  font-size: .85rem;
  opacity: .7;
}

/* --- Responsive --- */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .hero h1 { font-size: 2.4rem; }
  h1 { font-size: 2rem; }
}

@media (max-width: 768px) {
  /* Mobile nav */
  .menu-toggle { display: block; }
  .nav-wrapper {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    padding: 1.5rem;
    overflow-y: auto;
    z-index: 999;
  }
  .nav-wrapper.active { display: block; }
  .main-nav {
    flex-direction: column;
    gap: 0;
  }
  .main-nav > li > a {
    padding: .9rem 1rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--color-light-gray);
  }
  .dropdown {
    position: static;
    box-shadow: none;
    border-radius: 0;
    padding-left: 1rem;
    background: var(--color-off-white);
  }
  .has-dropdown.open > .dropdown { display: block; }
  .header-ctas {
    flex-direction: column;
    gap: .5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-light-gray);
  }
  .header-ctas .btn { width: 100%; text-align: center; }

  /* Layout */
  .hero { padding: 3.5rem 0; }
  .hero h1 { font-size: 2rem; }
  .hero .lead { font-size: 1.05rem; }
  .section { padding: 3.5rem 0; }
  .page-header { padding: 2.5rem 0 2rem; }
  .page-header h1 { font-size: 1.8rem; }
  .card-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .btn + .btn { margin-left: 0; margin-top: .5rem; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-ctas .btn { width: 80%; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.7rem; }
  h2 { font-size: 1.5rem; }
  .form-card { padding: 1.5rem; }
}

/* --- Print --- */
@media print {
  .site-header, .site-footer, .menu-toggle, .cta-banner { display: none; }
  body { font-size: 12pt; color: #000; }
  a { color: #000; text-decoration: underline; }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- Focus visible --- */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}