/* ===================================================================
   Ekue — Marketing Site Stylesheet
   Pure CSS, no frameworks, no external dependencies.
   =================================================================== */

/* --- Variables ---------------------------------------------------- */
:root {
  --color-primary: #0052cc;
  --color-primary-dark: #003d99;
  --color-primary-light: #e6f0ff;
  --color-accent: #36b37e;
  --color-accent-dark: #2a8c62;
  --color-text: #172b4d;
  --color-text-secondary: #5e6c84;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f5f7;
  --color-border: #dfe1e6;
  --color-white: #ffffff;
  --color-dark: #091e42;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  --max-width: 1140px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(9,30,66,.08);
  --shadow-md: 0 4px 12px rgba(9,30,66,.1);
  --shadow-lg: 0 8px 24px rgba(9,30,66,.12);
  --transition: 0.2s ease;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 72px;
  --space-3xl: 96px;
}

/* --- 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-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }

/* --- Skip link ---------------------------------------------------- */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-primary); color: var(--color-white);
  padding: var(--space-sm) var(--space-md); z-index: 9999;
  font-weight: 600; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* --- Container ---------------------------------------------------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); }

/* --- Visually hidden --------------------------------------------- */
.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;
}

/* === HEADER / NAV ================================================= */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: var(--space-sm); font-weight: 700; font-size: 1.25rem; color: var(--color-primary); }
.nav-logo svg, .nav-logo img { width: 32px; height: 32px; border-radius: 4px; }
.nav-links { display: flex; gap: var(--space-lg); align-items: center; }
.nav-links a {
  font-size: 0.9375rem; font-weight: 500; color: var(--color-text-secondary);
  padding: var(--space-xs) 0; transition: color var(--transition);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--color-primary); }

/* Mobile nav toggle */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: var(--space-sm); color: var(--color-text); }
.nav-toggle svg { width: 24px; height: 24px; }

/* Nav dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
  font-size: 0.9375rem; font-weight: 500; color: var(--color-text-secondary);
  padding: var(--space-xs) 0; transition: color var(--transition);
  background: none; border: none; cursor: pointer; font-family: var(--font-stack);
  display: inline-flex; align-items: center; gap: 4px;
}
.nav-dropdown-toggle:hover, .nav-dropdown.open .nav-dropdown-toggle { color: var(--color-primary); }
.nav-dropdown-toggle svg { width: 12px; height: 12px; transition: transform var(--transition); }
.nav-dropdown.open .nav-dropdown-toggle svg { transform: rotate(180deg); }
.nav-dropdown-menu {
  display: none; position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius); box-shadow: var(--shadow-md);
  min-width: 200px; z-index: 1001; padding: var(--space-xs) 0;
}
.nav-dropdown.open .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: block; padding: var(--space-sm) var(--space-md);
  font-size: 0.9375rem; font-weight: 500; color: var(--color-text-secondary);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-dropdown-menu a:hover { background: var(--color-bg-alt); color: var(--color-primary); }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; flex-direction: column; gap: 0;
    position: absolute; top: 64px; left: 0; right: 0;
    background: var(--color-white); border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md); z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: var(--space-md) var(--space-lg); border-bottom: 1px solid var(--color-bg-alt); width: 100%; }
  .nav-dropdown { width: 100%; }
  .nav-dropdown-toggle { padding: var(--space-md) var(--space-lg); width: 100%; justify-content: space-between; border-bottom: 1px solid var(--color-bg-alt); }
  .nav-dropdown-menu { position: static; box-shadow: none; border: none; border-radius: 0; min-width: 100%; padding: 0; }
  .nav-dropdown-menu a { padding-left: var(--space-xl); }
  .nav-dropdown.open .nav-dropdown-menu { display: block; }
}

/* === HERO ========================================================= */
.hero {
  padding: var(--space-3xl) 0;
  text-align: center;
  background: linear-gradient(170deg, var(--color-primary-light) 0%, var(--color-bg) 60%);
}
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; line-height: 1.15; margin-bottom: var(--space-md); color: var(--color-dark); }
.hero p { font-size: 1.125rem; color: var(--color-text-secondary); max-width: 640px; margin: 0 auto var(--space-xl); }
.hero-cta { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

/* === BUTTONS ====================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm);
  font-family: var(--font-stack); font-size: 1rem; font-weight: 600;
  padding: 12px 28px; border-radius: var(--radius); border: 2px solid transparent;
  cursor: pointer; transition: all var(--transition); text-decoration: none; line-height: 1.4;
}
.btn:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; }
.btn-primary { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white); }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { 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 { background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: var(--color-white); }
.btn-sm { font-size: 0.875rem; padding: 8px 20px; }

/* === SECTIONS ===================================================== */
.section { padding: var(--space-3xl) 0; }
.section-alt { background: var(--color-bg-alt); }
.section-header { text-align: center; margin-bottom: var(--space-xl); }
.section-header h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); font-weight: 700; color: var(--color-dark); margin-bottom: var(--space-sm); }
.section-header p { font-size: 1.0625rem; color: var(--color-text-secondary); max-width: 600px; margin: 0 auto; }

/* === GRID ========================================================= */
.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* === CARDS ======================================================== */
.card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-xl);
  box-shadow: var(--shadow-sm); transition: box-shadow var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-icon { width: 48px; height: 48px; margin-bottom: var(--space-md); color: var(--color-primary); }
.card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: var(--space-sm); color: var(--color-dark); }
.card p { color: var(--color-text-secondary); font-size: 0.9375rem; }
.card ul { margin-top: var(--space-sm); }
.card ul li { position: relative; padding-left: 1.5em; color: var(--color-text-secondary); font-size: 0.9375rem; margin-bottom: var(--space-xs); }
.card ul li::before { content: "\2713"; position: absolute; left: 0; color: var(--color-accent); font-weight: 700; }

/* === PRICING CARDS ================================================ */
.pricing-card { text-align: center; position: relative; }
.pricing-card.featured { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.pricing-badge {
  display: inline-block; background: var(--color-primary); color: var(--color-white);
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 4px 14px; border-radius: 20px; margin-bottom: var(--space-md);
}
.pricing-price { font-size: 2.5rem; font-weight: 800; color: var(--color-dark); margin: var(--space-md) 0 var(--space-xs); }
.pricing-price span { font-size: 1rem; font-weight: 500; color: var(--color-text-secondary); }
.pricing-card h3 { font-size: 1.375rem; }
.pricing-card .card-features { text-align: left; margin: var(--space-lg) 0; }
.pricing-card .btn { width: 100%; }

/* === TABLES ======================================================= */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: var(--space-lg) 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--color-border); }
th { background: var(--color-bg-alt); font-weight: 600; color: var(--color-dark); white-space: nowrap; }
td { color: var(--color-text-secondary); }
tr:hover td { background: var(--color-primary-light); }
.check { color: var(--color-accent); font-weight: 700; }
.cross { color: #ff5630; font-weight: 700; }

/* === FAQ ACCORDION ================================================ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-question {
  width: 100%; background: none; border: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-lg) 0; font-size: 1.0625rem; font-weight: 600;
  color: var(--color-dark); text-align: left; font-family: var(--font-stack);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--color-primary); }
.faq-question:focus-visible { outline: 2px solid var(--color-primary); outline-offset: -2px; border-radius: 4px; }
.faq-icon { width: 20px; height: 20px; flex-shrink: 0; margin-left: var(--space-md); transition: transform var(--transition); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer-inner { padding: 0 0 var(--space-lg); color: var(--color-text-secondary); line-height: 1.7; }
.faq-answer-inner a { text-decoration: underline; }

/* === TESTIMONIALS ================================================= */
.testimonial {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}
.testimonial blockquote { font-size: 1.0625rem; font-style: italic; color: var(--color-text); line-height: 1.7; margin-bottom: var(--space-md); }
.testimonial cite { font-style: normal; font-weight: 600; color: var(--color-dark); font-size: 0.9375rem; }
.testimonial cite span { display: block; font-weight: 400; color: var(--color-text-secondary); font-size: 0.8125rem; }

/* === FORMS ======================================================== */
.form-group { margin-bottom: var(--space-lg); }
.form-group label { display: block; font-weight: 600; margin-bottom: var(--space-sm); font-size: 0.9375rem; color: var(--color-dark); }
.form-control {
  width: 100%; padding: 12px 16px; border: 1px solid var(--color-border);
  border-radius: var(--radius); font-size: 1rem; font-family: var(--font-stack);
  color: var(--color-text); background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0,82,204,.15); outline: none; }
textarea.form-control { resize: vertical; min-height: 120px; }

/* === BULLET LIST ================================================== */
.bullet-list li { position: relative; padding-left: 1.75em; margin-bottom: var(--space-sm); color: var(--color-text-secondary); line-height: 1.6; }
.bullet-list li::before { content: "\2713"; position: absolute; left: 0; color: var(--color-accent); font-weight: 700; }

/* === CONTENT PROSE ================================================ */
.prose h2 { font-size: 1.5rem; font-weight: 700; color: var(--color-dark); margin: var(--space-xl) 0 var(--space-md); }
.prose h3 { font-size: 1.25rem; font-weight: 600; color: var(--color-dark); margin: var(--space-lg) 0 var(--space-sm); }
.prose p { margin-bottom: var(--space-md); color: var(--color-text-secondary); line-height: 1.7; }
.prose ul, .prose ol { margin: var(--space-md) 0; padding-left: 1.5em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: var(--space-xs); color: var(--color-text-secondary); }
.prose a { text-decoration: underline; }

/* === PAGE HEADER ================================================== */
.page-header { padding: var(--space-2xl) 0 var(--space-xl); text-align: center; background: var(--color-bg-alt); }
.page-header h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; color: var(--color-dark); margin-bottom: var(--space-sm); }
.page-header p { font-size: 1.0625rem; color: var(--color-text-secondary); max-width: 640px; margin: 0 auto; }

/* === CALLOUT BOX ================================================== */
.callout {
  background: var(--color-primary-light); border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: var(--space-lg); margin: var(--space-xl) 0;
}
.callout p { color: var(--color-text); margin: 0; }
.callout a { font-weight: 600; }

/* === FOOTER CTA BAND ============================================== */
.footer-cta-band {
  text-align: center; padding: var(--space-xl) 0;
  background: var(--color-bg-alt); border-top: 1px solid var(--color-border);
}
.footer-cta-band p {
  font-size: 1.125rem; font-weight: 600; color: var(--color-dark);
  margin-bottom: var(--space-md); display: inline;
}
.footer-cta-band .btn { margin-left: var(--space-md); }
@media (max-width: 600px) {
  .footer-cta-band .btn { display: block; margin: var(--space-md) auto 0; width: fit-content; }
}

/* === FOOTER ======================================================= */
.site-footer {
  background: var(--color-dark); color: rgba(255,255,255,.7);
  padding: var(--space-xl) 0 var(--space-lg); font-size: 0.875rem;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl); margin-bottom: var(--space-xl);
}
.footer-col h4 { color: var(--color-white); font-size: 0.9375rem; font-weight: 700; margin-bottom: var(--space-md); }
.footer-col p { line-height: 1.7; margin: 0; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: var(--space-sm); }
.footer-col ul a { color: rgba(255,255,255,.7); transition: color var(--transition); }
.footer-col ul a:hover { color: var(--color-white); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-md);
  border-top: 1px solid rgba(255,255,255,.1); padding-top: var(--space-lg);
}
.footer-bottom a { color: rgba(255,255,255,.7); transition: color var(--transition); }
.footer-bottom a:hover { color: var(--color-white); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .footer-grid { grid-template-columns: 1fr; } }

/* === CTA BANNER =================================================== */
.cta-banner { text-align: center; padding: var(--space-3xl) 0; background: linear-gradient(170deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: var(--color-white); }
.cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; margin-bottom: var(--space-md); color: var(--color-white); }
.cta-banner p { font-size: 1.0625rem; opacity: .85; max-width: 540px; margin: 0 auto var(--space-xl); }
.cta-banner .btn-primary { background: var(--color-white); color: var(--color-primary); border-color: var(--color-white); }
.cta-banner .btn-primary:hover { background: var(--color-primary-light); border-color: var(--color-primary-light); }
.cta-banner .btn-outline { color: var(--color-white); border-color: rgba(255,255,255,.5); }
.cta-banner .btn-outline:hover { background: rgba(255,255,255,.15); color: var(--color-white); border-color: var(--color-white); }

/* === COMPARISON HIGHLIGHTS ======================================== */
.comparison-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); margin: var(--space-xl) 0; }
.comparison-highlights h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--space-md); color: var(--color-dark); }
@media (max-width: 600px) { .comparison-highlights { grid-template-columns: 1fr; } }

/* === MIGRATION STEPS ============================================== */
.steps { counter-reset: step; margin: var(--space-lg) 0; }
.step { display: flex; gap: var(--space-lg); align-items: flex-start; margin-bottom: var(--space-lg); }
.step::before {
  counter-increment: step; content: counter(step);
  display: flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; background: var(--color-primary);
  color: var(--color-white); font-weight: 700; font-size: 1.125rem;
  border-radius: 50%; flex-shrink: 0;
}
.step-content h3 { font-size: 1.0625rem; font-weight: 600; color: var(--color-dark); margin-bottom: var(--space-xs); }
.step-content p { color: var(--color-text-secondary); font-size: 0.9375rem; }

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