/* =====================================================
   THE ECHO – site.css
   Mobile-first, no frameworks, single file
   ===================================================== */

/* =====================================================
   1. CSS VARIABLES
   ===================================================== */
:root {
  /* Colors */
  --color-accent:     #C0392B;   /* crimson */
  --color-accent-dk:  #962D22;
  --color-secondary:  #1A7A7A;   /* teal */
  --color-secondary-lt: #2aabab;
  --color-text:       #1E1E1E;   /* dark charcoal */
  --color-text-muted: #5A5A5A;
  --color-bg:         #FAFAF8;   /* warm off-white */
  --color-bg-light:   #F3F0EB;   /* light warm */
  --color-bg-dark:    #1A2020;
  --color-border:     #DDD9D2;
  --color-white:      #FFFFFF;

  /* Typography */
  --font-body:    Georgia, 'Times New Roman', serif;
  --font-ui:      -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono:    'Courier New', Courier, monospace;

  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-md:    1.125rem;
  --text-lg:    1.25rem;
  --text-xl:    1.5rem;
  --text-2xl:   2rem;
  --text-3xl:   2.75rem;
  --text-4xl:   3.5rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Layout */
  --container-max:    1200px;
  --container-narrow: 760px;
  --container-px:     1.25rem;

  /* Borders */
  --radius-sm:  4px;
  --radius:     8px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow:     0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.14);

  /* Transitions */
  --ease: 0.2s ease;
}

/* =====================================================
   2. RESET & BASE
   ===================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--ease), opacity var(--ease);
}
a:hover { color: var(--color-accent); }

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-ui);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

address { font-style: normal; }

/* Visually hidden (accessibility) */
.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;
}

/* =====================================================
   3. LAYOUT
   ===================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-16);
}
.section--compact { padding-block: var(--space-12); }

.bg-light { background-color: var(--color-bg-light); }
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }

.content-split {
  display: grid;
  gap: var(--space-8);
}

/* =====================================================
   4. TYPOGRAPHY
   ===================================================== */
.section-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-8);
}
.section-intro {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  max-width: 65ch;
  margin-bottom: var(--space-8);
}
.section-title + .section-intro { margin-top: calc(-1 * var(--space-4)); }

/* =====================================================
   5. BUTTONS
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background-color: var(--color-accent-dk);
  border-color: var(--color-accent-dk);
  color: var(--color-white);
  box-shadow: var(--shadow);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-text-muted); color: var(--color-text); }

.btn-sm  { font-size: var(--text-sm); padding: 0.5rem 1rem; }
.btn-lg  { font-size: var(--text-md); padding: 1rem 2rem; }
.btn-full { width: 100%; }

/* =====================================================
   6. HEADER
   ===================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 64px;
}

.site-logo img {
  height: 36px;
  width: auto;
}

/* --- Nav --- */
.main-nav {
  display: none; /* hidden on mobile by default */
  flex-direction: column;
  position: fixed;
  inset: 64px 0 0 0;
  background-color: var(--color-white);
  padding: var(--space-6);
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
  z-index: 99;
}

.main-nav.is-open { display: flex; }

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
}

.nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background var(--ease), color var(--ease);
}
.nav-link:hover { background-color: var(--color-bg-light); color: var(--color-accent); }
.nav-link--active {
  color: var(--color-accent);
  background-color: var(--color-bg-light);
  font-weight: 700;
}

.nav-cta { align-self: flex-start; }

/* --- Hamburger --- */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

.hamburger-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease);
}

.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =====================================================
   7. BREADCRUMB
   ===================================================== */
.breadcrumb {
  background-color: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-3);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumb-list li:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-2);
  color: var(--color-border);
}

.breadcrumb-list a { color: var(--color-text-muted); }
.breadcrumb-list a:hover { color: var(--color-accent); }
.breadcrumb-list [aria-current="page"] { color: var(--color-text); font-weight: 600; }

/* =====================================================
   8. HERO
   ===================================================== */
.hero {
  padding-block: var(--space-16) var(--space-12);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero--compact { padding-block: var(--space-12) var(--space-8); }

.hero-title {
  font-size: var(--text-3xl);
  max-width: 18ch;
  margin-bottom: var(--space-4);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 55ch;
  margin-bottom: var(--space-8);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Hero variants */
.hero--home     { background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-light) 100%); }
.hero--companies {}
.hero--audit    {}
.hero--tests    {}
.hero--courses  {}
.hero--about    {}
.hero--contact  {}

/* =====================================================
   9. CARDS & GRID
   ===================================================== */
.card-grid {
  display: grid;
  gap: var(--space-6);
}
.card-grid--2 { grid-template-columns: 1fr; }
.card-grid--3 { grid-template-columns: 1fr; }
.card-grid--4 { grid-template-columns: 1fr 1fr; }

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}
.card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}

.card--path {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.card--path:hover { transform: translateY(-2px); }
.card--path-highlight {
  border-color: var(--color-accent);
  background-color: #FDF5F5;
}

.card-icon { width: 48px; height: 48px; margin-bottom: var(--space-2); }
.card-title { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.card-text { color: var(--color-text-muted); font-size: var(--text-sm); }
.card-link { color: var(--color-accent); font-size: var(--text-sm); font-weight: 600; margin-top: auto; }
.card-badge { display: inline-block; font-size: var(--text-xs); font-weight: 700; padding: 2px 8px; border-radius: 100px; background-color: var(--color-secondary); color: var(--color-white); }
.card-badge--soon { background-color: var(--color-border); color: var(--color-text-muted); }

.card--test {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-4);
  cursor: pointer;
  font-family: var(--font-ui);
}
.card--test:hover { border-color: var(--color-secondary); box-shadow: var(--shadow); }
.card--test-disabled { opacity: 0.5; cursor: not-allowed; }
.card--test-disabled:hover { border-color: var(--color-border); box-shadow: none; }
.card-flag { width: 48px; height: 32px; background: var(--color-bg-light); border-radius: var(--radius-sm); }

.card--language .card-title { font-size: var(--text-md); }

/* =====================================================
   10. STATS
   ===================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  text-align: center;
}

.stat-value {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* =====================================================
   11. PROCESS STEPS
   ===================================================== */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  counter-reset: none;
}

.process-step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: 50%;
}

.process-step h3 { margin-bottom: var(--space-2); }

/* =====================================================
   12. FORMS
   ===================================================== */
.contact-form { display: flex; flex-direction: column; gap: var(--space-5); }

.form-row { display: flex; flex-direction: column; gap: var(--space-5); }

.form-group { display: flex; flex-direction: column; gap: var(--space-2); }

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-white);
  transition: border-color var(--ease), box-shadow var(--ease);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(26,122,122,.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Honeypot – must be invisible */
.form-honeypot {
  display: none !important;
  position: absolute;
  left: -9999px;
}

/* =====================================================
   13. CTA SECTION
   ===================================================== */
.section--cta {
  background-color: var(--color-bg-dark);
  color: var(--color-white);
}
.section--cta .section-title,
.section--cta .cta-title { color: var(--color-white); }

.cta-title { font-size: var(--text-2xl); margin-bottom: var(--space-4); }
.cta-sub { font-size: var(--text-md); color: rgba(255,255,255,.7); margin-bottom: var(--space-8); max-width: 55ch; margin-inline: auto; }
.cta-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; }

/* =====================================================
   14. TESTIMONIALS
   ===================================================== */
.testimonial {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: var(--space-6);
}
.testimonial p { font-size: var(--text-md); font-style: italic; margin-bottom: var(--space-4); }
.testimonial footer { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); }

/* =====================================================
   15. FEATURE LIST
   ===================================================== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.feature-list li {
  padding-left: var(--space-6);
  position: relative;
  font-size: var(--text-base);
}
.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: 700;
}

/* =====================================================
   16. CONTACT LAYOUT
   ===================================================== */
.contact-layout {
  display: grid;
  gap: var(--space-12);
}
.contact-detail { margin-bottom: var(--space-6); }
.contact-detail h3 { font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.contact-detail a { font-size: var(--text-md); font-weight: 600; color: var(--color-text); }
.contact-detail a:hover { color: var(--color-accent); }
.contact-map { margin-top: var(--space-6); aspect-ratio: 16/9; background-color: var(--color-bg-light); border-radius: var(--radius); overflow: hidden; }

/* =====================================================
   17. THANK YOU PAGE
   ===================================================== */
.section--thankyou {
  padding-block: var(--space-24);
}
.thankyou-icon {
  margin: 0 auto var(--space-8);
  width: 64px;
}
.thankyou-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-8);
}

/* =====================================================
   18. 404 PAGE
   ===================================================== */
.section--404 { padding-block: var(--space-24); }
.error-code {
  font-size: 8rem;
  font-weight: 900;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
}
.error-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; margin-top: var(--space-8); }

/* =====================================================
   19. TEST PAGE
   ===================================================== */
.test-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}
.progress-bar {
  height: 6px;
  background-color: var(--color-border);
  border-radius: 100px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background-color: var(--color-secondary);
  border-radius: 100px;
  transition: width 0.3s ease;
}
.progress-label { font-size: var(--text-sm); color: var(--color-text-muted); }
.test-result { text-align: center; padding-block: var(--space-8); }
.result-level { font-size: var(--text-3xl); font-weight: 700; color: var(--color-accent); margin-bottom: var(--space-4); }
.result-desc { color: var(--color-text-muted); margin-bottom: var(--space-8); }
.result-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; }
.placeholder-note { color: var(--color-text-muted); font-size: var(--text-sm); text-align: center; padding: var(--space-12); background: var(--color-bg-light); border-radius: var(--radius); }

/* =====================================================
   20. FOOTER
   ===================================================== */
.site-footer {
  background-color: var(--color-bg-dark);
  color: rgba(255,255,255,.7);
  padding-block: var(--space-12);
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.footer-logo img { filter: brightness(0) invert(1); opacity: 0.85; }

.footer-tagline {
  font-size: var(--text-sm);
  color: rgba(255,255,255,.6);
  margin-top: var(--space-2);
  max-width: 45ch;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: rgba(255,255,255,.65);
  font-size: var(--text-sm);
  transition: color var(--ease);
}
.footer-links a:hover { color: var(--color-white); }

.footer-copy {
  font-size: var(--text-xs);
  color: rgba(255,255,255,.4);
  margin-bottom: 0;
}

/* =====================================================
   21. FAQ ACCORDION
   ===================================================== */
.faq-item { border-bottom: 1px solid var(--color-border); }

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  background: none;
  border: none;
  padding: var(--space-4) 0;
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
}
.faq-q::after { content: '+'; font-size: var(--text-xl); transition: transform var(--ease); }
.faq-q[aria-expanded="true"]::after { transform: rotate(45deg); }

.faq-a {
  display: none;
  padding-bottom: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
}
.faq-a.is-open { display: block; }

/* =====================================================
   22. RESPONSIVE – tablet up (640px+)
   ===================================================== */
@media (min-width: 640px) {
  :root { --container-px: 2rem; }

  .card-grid--3 { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .form-row--2 { flex-direction: row; }
}

/* =====================================================
   23. RESPONSIVE – desktop (1024px+)
   ===================================================== */
@media (min-width: 1024px) {
  /* Header */
  .nav-toggle { display: none; }

  .main-nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    position: static;
    inset: unset;
    background: none;
    padding: 0;
    border: none;
    overflow: visible;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: 0;
    margin-bottom: 0;
  }

  .nav-link {
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-3);
  }

  .nav-cta { margin-left: var(--space-4); }

  /* Grids */
  .card-grid--2 { grid-template-columns: 1fr 1fr; }
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid--4 { grid-template-columns: repeat(4, 1fr); }

  .content-split { grid-template-columns: 1fr 1fr; }

  /* Hero */
  .hero-title { font-size: var(--text-4xl); }

  /* Contact */
  .contact-layout { grid-template-columns: 3fr 2fr; }

  /* Footer */
  .footer-inner {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-12);
  }
  .footer-links { flex-direction: row; flex-wrap: wrap; gap: var(--space-4) var(--space-6); }
  .footer-copy { width: 100%; }

  /* Test */
  .test-header { flex-direction: row; align-items: center; justify-content: space-between; }
}

/* =====================================================
   BLOG PAGE – append to site.css
   ===================================================== */

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.blog-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

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

.blog-card__category {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  background-color: rgba(26, 122, 122, 0.08);
  padding: 3px 10px;
  border-radius: 100px;
  align-self: flex-start;
}

.blog-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0;
}

.blog-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__link {
  margin-top: auto;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  transition: gap var(--ease);
}

.blog-card__link:hover {
  color: var(--color-accent-dk);
}

@media (min-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* 4 cards: keep last one from stretching full width */
  .blog-grid > .blog-card:last-child:nth-child(3n + 1) {
    grid-column: 1 / 2;
  }
}