/* ======================================
   KUJANI - Design System & Styles
   Educational Information Site - Bulgarian
   ====================================== */

/* Colour System */
:root {
  --color-primary: #2F4F4F;
  --color-accent-warm: #CC7722;
  --color-accent-ivory: #FDFDED;
  --color-accent-teal: #48959A;
  --color-text-dark: #333333;
  --color-text-light: #666666;
  --color-border-light: #E0E0E0;
  --color-bg-light: #FFFFFF;
  --spacing-base: 8px;
}

/* Typography - Font Families */
@import url('https://fonts.googleapis.com/css2?family=Lora:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --font-serif: 'Lora', serif;
  --font-sans: 'Inter', sans-serif;
}

/* ======================================
   GLOBAL STYLES
   ====================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  overflow-x: hidden;
}

/* ======================================
   TYPOGRAPHY HIERARCHY
   ====================================== */

h1 {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: calc(var(--spacing-base) * 4);
  letter-spacing: -0.5px;
}

h2 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-primary);
  margin-bottom: calc(var(--spacing-base) * 3);
  letter-spacing: -0.3px;
}

h3 {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-primary);
  margin-bottom: calc(var(--spacing-base) * 2);
}

p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: calc(var(--spacing-base) * 2);
  color: var(--color-text-dark);
}

a {
  color: var(--color-accent-warm);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

ul, ol {
  margin-bottom: calc(var(--spacing-base) * 3);
  margin-left: calc(var(--spacing-base) * 3);
}

li {
  margin-bottom: calc(var(--spacing-base) * 1.5);
  line-height: 1.8;
}

/* ======================================
   LAYOUT & CONTAINER
   ====================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing-base) * 4);
}

.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing-base) * 4);
}

section {
  padding: calc(var(--spacing-base) * 10) 0;
}

section.section-hero {
  padding: calc(var(--spacing-base) * 12) 0;
}

section.section-light {
  background-color: var(--color-accent-ivory);
}

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

section.section-primary h2,
section.section-primary h3,
section.section-primary h1 {
  color: var(--color-accent-ivory);
}

section.section-teal {
  background-color: var(--color-accent-teal);
  color: var(--color-bg-light);
}

section.section-teal h2,
section.section-teal h3,
section.section-teal h1 {
  color: var(--color-accent-ivory);
}

/* ======================================
   HEADER & NAVIGATION
   ====================================== */

header {
  background-color: var(--color-primary);
  color: var(--color-accent-ivory);
  padding: calc(var(--spacing-base) * 2) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent-warm);
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: calc(var(--spacing-base) * 3);
  margin: 0;
}

nav a {
  color: var(--color-accent-ivory);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s ease, border-bottom 0.3s ease;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

nav a:hover,
nav a.active {
  color: var(--color-accent-warm);
  border-bottom: 2px solid var(--color-accent-warm);
}

/* ======================================
   FOOTER
   ====================================== */

footer {
  background-color: var(--color-primary);
  color: var(--color-accent-ivory);
  padding: calc(var(--spacing-base) * 8) 0 calc(var(--spacing-base) * 4);
  margin-top: calc(var(--spacing-base) * 10);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--spacing-base) * 4);
  margin-bottom: calc(var(--spacing-base) * 6);
}

.footer-section h3 {
  color: var(--color-accent-warm);
  margin-bottom: calc(var(--spacing-base) * 2);
}

.footer-section p,
.footer-section a {
  color: var(--color-accent-ivory);
  font-size: 0.95rem;
  line-height: 1.8;
}

.footer-divider {
  border-top: 1px solid rgba(255, 253, 237, 0.2);
  margin: calc(var(--spacing-base) * 4) 0;
  padding-top: calc(var(--spacing-base) * 4);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 253, 237, 0.7);
}

/* ======================================
   BUTTONS & LINKS
   ====================================== */

.btn {
  display: inline-block;
  padding: calc(var(--spacing-base) * 2) calc(var(--spacing-base) * 4);
  background-color: var(--color-accent-warm);
  color: var(--color-bg-light);
  border: none;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
}

.btn:hover {
  background-color: #B86500;
  box-shadow: 0 4px 12px rgba(204, 119, 34, 0.25);
}

.btn:active {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(204, 119, 34, 0.2);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: var(--color-accent-ivory);
}

.btn-secondary:hover {
  background-color: #1a2f2f;
}

/* ======================================
   CARDS
   ====================================== */

.card {
  background-color: var(--color-accent-ivory);
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  padding: calc(var(--spacing-base) * 4);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
  box-shadow: 0 8px 24px rgba(47, 79, 79, 0.12);
  transform: translateY(-3px);
}

.card h3 {
  margin-bottom: calc(var(--spacing-base) * 1.5);
}

.card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: calc(var(--spacing-base) * 4);
}

/* ======================================
   IMAGE STYLES
   ====================================== */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
}

.image-section {
  margin: calc(var(--spacing-base) * 4) 0;
}

/* ======================================
   TWO-COLUMN LAYOUT
   ====================================== */

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-base) * 6);
  align-items: center;
}

.two-column.reverse {
  direction: rtl;
}

.two-column.reverse > * {
  direction: ltr;
}

.two-column-text {
  flex: 1;
}

.two-column-image {
  flex: 1;
  min-height: 400px;
}

/* ======================================
   HERO SECTION
   ====================================== */

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a2f2f 100%);
  color: var(--color-accent-ivory);
  padding: calc(var(--spacing-base) * 15) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="20" fill="rgba(255,253,237,0.03)"/><circle cx="80" cy="80" r="30" fill="rgba(72,149,154,0.02)"/></svg>');
  background-size: 400px 400px;
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--color-accent-ivory);
  font-size: 3.5rem;
  margin-bottom: calc(var(--spacing-base) * 3);
}

.hero p {
  color: rgba(255, 253, 237, 0.95);
  font-size: 1.2rem;
  margin-bottom: calc(var(--spacing-base) * 4);
  line-height: 1.8;
}

/* ======================================
   DIVIDER & SEPARATOR
   ====================================== */

.divider {
  height: 2px;
  background-color: var(--color-border-light);
  margin: calc(var(--spacing-base) * 6) 0;
}

.divider-accent {
  height: 3px;
  background-color: var(--color-accent-warm);
  width: 80px;
  margin: calc(var(--spacing-base) * 2) 0;
}

/* ======================================
   DISCLAIMER BLOCK
   ====================================== */

.disclaimer {
  background-color: var(--color-accent-ivory);
  border-left: 4px solid var(--color-accent-teal);
  padding: calc(var(--spacing-base) * 3);
  margin: calc(var(--spacing-base) * 6) 0;
  border-radius: 4px;
}

.disclaimer h3 {
  color: var(--color-accent-teal);
  margin-bottom: calc(var(--spacing-base) * 2);
  font-size: 1.1rem;
}

.disclaimer p {
  color: var(--color-text-dark);
  font-size: 0.95rem;
  margin-bottom: calc(var(--spacing-base) * 1);
}

/* ======================================
   FAQ SECTION
   ====================================== */

.faq-item {
  background-color: var(--color-accent-ivory);
  border: 1px solid var(--color-border-light);
  margin-bottom: calc(var(--spacing-base) * 2);
  border-radius: 4px;
  overflow: hidden;
}

.faq-question {
  padding: calc(var(--spacing-base) * 3);
  cursor: pointer;
  background-color: var(--color-accent-ivory);
  border: none;
  width: 100%;
  text-align: left;
  font-weight: 600;
  color: var(--color-primary);
  transition: background-color 0.3s ease;
  font-size: 1.05rem;
}

.faq-question:hover {
  background-color: #f0eee8;
}

.faq-answer {
  padding: calc(var(--spacing-base) * 3);
  background-color: var(--color-bg-light);
  display: none;
  border-top: 1px solid var(--color-border-light);
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-answer p {
  margin-bottom: calc(var(--spacing-base) * 1);
  color: var(--color-text-light);
}

/* ======================================
   BREADCRUMB
   ====================================== */

.breadcrumb {
  display: flex;
  gap: calc(var(--spacing-base) * 1.5);
  margin-bottom: calc(var(--spacing-base) * 4);
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.breadcrumb a {
  color: var(--color-accent-warm);
}

.breadcrumb span {
  color: var(--color-border-light);
}

/* ======================================
   RESPONSIVE DESIGN
   ====================================== */

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  h3 {
    font-size: 1.2rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .two-column {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing-base) * 4);
  }

  nav ul {
    flex-direction: column;
    gap: calc(var(--spacing-base) * 2);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing-base) * 3);
  }

  .header-content {
    flex-direction: column;
    gap: calc(var(--spacing-base) * 2);
  }

  section {
    padding: calc(var(--spacing-base) * 6) 0;
  }

  .hero {
    padding: calc(var(--spacing-base) * 8) 0;
  }

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

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .container,
  .container-wide {
    padding: 0 calc(var(--spacing-base) * 2);
  }

  nav ul {
    gap: calc(var(--spacing-base) * 1.5);
  }

  p {
    line-height: 1.6;
  }
}

/* ======================================
   UTILITY CLASSES
   ====================================== */

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt {
  margin-top: calc(var(--spacing-base) * 4);
}

.mb {
  margin-bottom: calc(var(--spacing-base) * 4);
}

.py {
  padding-top: calc(var(--spacing-base) * 4);
  padding-bottom: calc(var(--spacing-base) * 4);
}

.hidden {
  display: none;
}

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