/* =========================================================
   Zlatá Expedice IT - Monochrome Sophisticated CSS Theme
   Author: Senior CSS Developer & UI Designer
   Brand: Zlatá Expedice IT
   ========================================================= */

/* =====================
   1. CSS Variables
   ===================== */
:root {
  /* Brand Colors (used as accents only) */
  --brand-primary: #1D3557;
  --brand-secondary: #F9A602;
  --brand-accent: #F1FAEE;

  /* Monochrome Palette */
  --mono-bg: #fff;
  --mono-bg-alt: #f5f5f5;
  --mono-card: #f8f8f8;
  --mono-card-dark: #222;
  --mono-text: #181818;
  --mono-text-light: #fff;
  --mono-text-muted: #555;
  --mono-border: #e0e0e0;
  --mono-border-dark: #222;
  --mono-shadow: 0 4px 24px rgba(0,0,0,0.08), 0 1.5px 4px rgba(0,0,0,0.04);
  --mono-shadow-strong: 0 8px 32px rgba(0,0,0,0.16);

  /* Accent for CTAs */
  --cta-bg: #181818;
  --cta-text: #fff;
  --cta-hover-bg: #fff;
  --cta-hover-text: #181818;
  --cta-border: #181818;

  /* Typography */
  --font-display: 'Montserrat', Arial, Helvetica, sans-serif;
  --font-body: 'Roboto', Arial, Helvetica, sans-serif;

  /* Spacing */
  --container-max: 1200px;
  --section-margin: 60px;
  --section-padding: 40px 20px;
  --card-gap: 24px;
  --card-margin-bottom: 20px;
  --flex-gap: 20px;
  --testimonial-gap: 20px;
  --feature-gap: 15px;
  --text-image-gap: 30px;
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
}

/* =====================
   2. Reset & Base
   ===================== */
html {
  box-sizing: border-box;
  font-size: 16px;
  background: var(--mono-bg);
  color: var(--mono-text);
  scroll-behavior: smooth;
}
*, *:before, *:after {
  box-sizing: inherit;
}
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  background: var(--mono-bg);
  color: var(--mono-text);
  margin: 0;
  min-height: 100vh;
  letter-spacing: 0.01em;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--mono-text);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover, a:focus {
  color: var(--brand-secondary);
  outline: none;
}

/* =====================
   3. Typography
   ===================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--mono-text);
  margin-top: 0;
  margin-bottom: 0.6em;
  letter-spacing: 0.01em;
}
h1 {
  font-size: 2.5rem;
  line-height: 1.15;
  margin-bottom: 0.5em;
}
h2 {
  font-size: 2rem;
  margin-bottom: 0.5em;
}
h3 {
  font-size: 1.25rem;
  margin-bottom: 0.4em;
}
h4, h5, h6 {
  font-size: 1.1rem;
  margin-bottom: 0.3em;
}
p, ul, ol, blockquote {
  margin-top: 0;
  margin-bottom: 1.2em;
}
ul, ol {
  padding-left: 1.5em;
}
blockquote {
  border-left: 4px solid var(--mono-border-dark);
  padding-left: 1em;
  color: var(--mono-text-muted);
  font-style: italic;
  margin: 1em 0;
}
strong {
  font-weight: 700;
}

/* =====================
   4. Layout Containers
   ===================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.content-wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.section {
  margin-bottom: var(--section-margin);
  padding: var(--section-padding);
  background: var(--mono-bg);
  border-radius: 16px;
  box-shadow: var(--mono-shadow);
}

/* =====================
   5. Navigation
   ===================== */
header {
  background: var(--mono-bg);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  position: sticky;
  top: 0;
  z-index: 100;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 18px 0;
  justify-content: flex-start;
  margin: 0 10px;
}
.main-nav a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  color: var(--mono-text);
  padding: 6px 10px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}
.main-nav a:hover, .main-nav a:focus {
  background: var(--mono-card);
  color: var(--brand-secondary);
}
.main-nav img {
  height: 38px;
  width: auto;
  margin-right: 18px;
  display: block;
}
.main-nav .cta-btn {
  margin-left: auto;
  background: var(--cta-bg);
  color: var(--cta-text);
  border: 2px solid var(--cta-bg);
  font-weight: 700;
  padding: 10px 26px;
  border-radius: 8px;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  transition: background var(--transition), color var(--transition), border var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.main-nav .cta-btn:hover, .main-nav .cta-btn:focus {
  background: var(--cta-hover-bg);
  color: var(--cta-hover-text);
  border: 2px solid var(--cta-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
}

/* =====================
   6. Mobile Navigation
   ===================== */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--mono-text);
  cursor: pointer;
  margin-left: auto;
  padding: 8px 12px;
  border-radius: 6px;
  transition: background var(--transition);
}
.mobile-menu-toggle:hover, .mobile-menu-toggle:focus {
  background: var(--mono-card);
}
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(24,24,24,0.98);
  color: var(--mono-text-light);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 0;
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1), opacity 0.25s;
}
.mobile-menu.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-close {
  background: none;
  border: none;
  color: var(--mono-text-light);
  font-size: 2.2rem;
  align-self: flex-end;
  margin: 24px 24px 0 0;
  cursor: pointer;
  transition: color var(--transition);
}
.mobile-menu-close:hover, .mobile-menu-close:focus {
  color: var(--brand-secondary);
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin: 48px 0 0 36px;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--mono-text-light);
  font-weight: 600;
  padding: 8px 0;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.mobile-nav a:hover, .mobile-nav a:focus {
  color: var(--brand-secondary);
  background: rgba(255,255,255,0.08);
}

@media (max-width: 1024px) {
  .main-nav {
    gap: 18px;
  }
}
@media (max-width: 900px) {
  .main-nav {
    gap: 10px;
  }
  .main-nav .cta-btn {
    padding: 8px 16px;
    font-size: 1rem;
  }
}
@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
    position: absolute;
    top: 18px;
    right: 18px;
    z-index: 1001;
  }
}

/* =====================
   7. Hero Section
   ===================== */
.hero {
  background: linear-gradient(120deg, #fff 70%, #eaeaea 100%);
  padding: 60px 0 40px 0;
  margin-bottom: var(--section-margin);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.hero .container {
  align-items: center;
  justify-content: center;
}
.hero .content-wrapper {
  align-items: flex-start;
  gap: 18px;
}
.hero h1 {
  font-size: 2.8rem;
  color: var(--mono-text);
  margin-bottom: 0.3em;
  letter-spacing: 0.01em;
}
.hero p {
  font-size: 1.25rem;
  color: var(--mono-text-muted);
  margin-bottom: 1.2em;
}
.hero .cta-btn {
  margin-top: 10px;
}

@media (max-width: 600px) {
  .hero {
    padding: 36px 0 24px 0;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1.05rem;
  }
}

/* =====================
   8. Cards, Features, Grids
   ===================== */
.card-container, .feature-grid, .course-overview-cards, .course-list, .lecturer-profiles, .testimonial-slider, .testimonial-list, .graduate-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: var(--card-gap);
  margin-bottom: 0;
}
.card, .feature-grid > div, .course-overview-cards > div, .course-list > div, .lecturer-profiles > div, .testimonial-card {
  background: var(--mono-card);
  border-radius: 14px;
  box-shadow: var(--mono-shadow);
  padding: 28px 24px;
  margin-bottom: var(--card-margin-bottom);
  flex: 1 1 260px;
  min-width: 240px;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
}
.card:hover, .feature-grid > div:hover, .course-overview-cards > div:hover, .course-list > div:hover, .lecturer-profiles > div:hover, .testimonial-card:hover {
  box-shadow: var(--mono-shadow-strong);
  transform: translateY(-4px) scale(1.015);
  background: #f0f0f0;
}

/* Testimonials: always dark text on light bg for contrast */
.testimonial-card {
  background: #fff;
  color: var(--mono-text);
  border: 1.5px solid var(--mono-border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  align-items: center;
  gap: var(--testimonial-gap);
  padding: 20px 24px;
  font-size: 1.08rem;
  margin-bottom: 20px;
  transition: box-shadow var(--transition), border var(--transition);
}
.testimonial-card strong {
  color: var(--brand-primary);
  font-size: 1rem;
  margin-top: 8px;
  display: block;
}

/* Feature Items */
.feature-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--feature-gap);
}

/* Content Grids */
.content-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--flex-gap);
  justify-content: space-between;
}

.text-image-section {
  display: flex;
  align-items: center;
  gap: var(--text-image-gap);
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .card-container, .feature-grid, .course-overview-cards, .course-list, .lecturer-profiles, .testimonial-slider, .testimonial-list, .graduate-gallery {
    gap: 16px;
  }
  .card, .feature-grid > div, .course-overview-cards > div, .course-list > div, .lecturer-profiles > div, .testimonial-card {
    padding: 20px 14px;
    min-width: 180px;
  }
}
@media (max-width: 768px) {
  .card-container, .feature-grid, .course-overview-cards, .course-list, .lecturer-profiles, .testimonial-slider, .testimonial-list, .graduate-gallery {
    flex-direction: column;
    gap: 18px;
  }
  .card, .feature-grid > div, .course-overview-cards > div, .course-list > div, .lecturer-profiles > div, .testimonial-card {
    min-width: 0;
    width: 100%;
  }
  .text-image-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
}

/* =====================
   9. CTA Section
   ===================== */
.cta {
  background: linear-gradient(90deg, #fff 70%, #eaeaea 100%);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  border-radius: 16px;
  margin-bottom: var(--section-margin);
  padding: 48px 0;
}
.cta .content-wrapper {
  align-items: center;
  text-align: center;
  gap: 18px;
}
.cta h2 {
  font-size: 2.1rem;
  color: var(--mono-text);
}
.cta .cta-btn {
  margin-top: 10px;
}

/* =====================
   10. Buttons & CTAs
   ===================== */
.cta-btn, .btn, button, input[type="submit"] {
  font-family: var(--font-display);
  font-weight: 700;
  background: var(--cta-bg);
  color: var(--cta-text);
  border: 2px solid var(--cta-bg);
  border-radius: 8px;
  padding: 12px 32px;
  font-size: 1.08rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  outline: none;
  display: inline-block;
  margin-top: 0.5em;
}
.cta-btn:hover, .btn:hover, button:hover, input[type="submit"]:hover,
.cta-btn:focus, .btn:focus, button:focus, input[type="submit"]:focus {
  background: var(--cta-hover-bg);
  color: var(--cta-hover-text);
  border: 2px solid var(--cta-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
}

/* =====================
   11. Footer
   ===================== */
footer {
  background: #181818;
  color: var(--mono-text-light);
  padding: 48px 0 24px 0;
  margin-top: 60px;
}
footer .container {
  align-items: flex-start;
  gap: 24px;
}
footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 18px;
}
footer nav a {
  color: var(--mono-text-light);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  opacity: 0.85;
  transition: color var(--transition), opacity var(--transition);
}
footer nav a:hover, footer nav a:focus {
  color: var(--brand-secondary);
  opacity: 1;
}
footer address {
  font-style: normal;
  color: #ccc;
  font-size: 0.98rem;
  margin-bottom: 12px;
  line-height: 1.6;
}
footer a {
  color: var(--brand-accent);
  text-decoration: underline;
}
footer p {
  color: #aaa;
  font-size: 0.95rem;
  margin-top: 18px;
}
@media (max-width: 768px) {
  footer .container {
    gap: 12px;
    padding: 0 10px;
  }
  footer nav {
    gap: 10px;
    flex-direction: column;
  }
}

/* =====================
   12. Miscellaneous Sections
   ===================== */
.photo-gallery, .graduate-gallery, .map, .office-hours, .before-after-stories {
  background: var(--mono-card);
  border-radius: 10px;
  padding: 18px 16px;
  margin-bottom: 20px;
  box-shadow: 0 1.5px 6px rgba(0,0,0,0.04);
  color: var(--mono-text);
}

.faq-accordion > div {
  background: var(--mono-card);
  border-radius: 10px;
  padding: 18px 16px;
  margin-bottom: 20px;
  box-shadow: 0 1.5px 6px rgba(0,0,0,0.04);
  transition: box-shadow var(--transition), background var(--transition);
}
.faq-accordion > div:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  background: #f0f0f0;
}

/* =====================
   13. Cookie Consent Banner
   ===================== */
.cookie-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 99999;
  background: #222;
  color: #fff;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.18);
  animation: cookieBannerIn 0.5s cubic-bezier(.4,0,.2,1);
}
@keyframes cookieBannerIn {
  from { transform: translateY(100%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}
.cookie-banner p {
  color: #fff;
  font-size: 1.05rem;
  margin: 0 0 8px 0;
  text-align: center;
}
.cookie-banner .cookie-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.cookie-banner button {
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: 6px;
  border: none;
  padding: 10px 22px;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  margin: 0;
}
.cookie-banner .accept {
  background: var(--brand-secondary);
  color: #181818;
}
.cookie-banner .accept:hover, .cookie-banner .accept:focus {
  background: #fff;
  color: #181818;
  box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}
.cookie-banner .reject {
  background: #fff;
  color: #181818;
  border: 1.5px solid #aaa;
}
.cookie-banner .reject:hover, .cookie-banner .reject:focus {
  background: #181818;
  color: #fff;
  border: 1.5px solid #fff;
}
.cookie-banner .settings {
  background: transparent;
  color: #fff;
  border: 1.5px solid #fff;
}
.cookie-banner .settings:hover, .cookie-banner .settings:focus {
  background: #fff;
  color: #181818;
}

/* Cookie Modal */
.cookie-modal-overlay {
  position: fixed;
  left: 0; right: 0; top: 0; bottom: 0;
  background: rgba(24,24,24,0.85);
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.cookie-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.cookie-modal {
  background: #fff;
  color: #181818;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  padding: 36px 28px 28px 28px;
  min-width: 320px;
  max-width: 95vw;
  display: flex;
  flex-direction: column;
  gap: 18px;
  animation: cookieModalIn 0.4s cubic-bezier(.4,0,.2,1);
  position: relative;
}
@keyframes cookieModalIn {
  from { transform: translateY(40px) scale(0.98); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}
.cookie-modal h2 {
  font-size: 1.4rem;
  margin-bottom: 0.5em;
}
.cookie-modal .cookie-categories {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cookie-modal .cookie-category {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
}
.cookie-modal .cookie-category input[type="checkbox"] {
  accent-color: var(--brand-secondary);
  width: 20px;
  height: 20px;
}
.cookie-modal .cookie-category.essential label {
  font-weight: 600;
  color: #181818;
}
.cookie-modal .cookie-category.essential input[type="checkbox"] {
  display: none;
}
.cookie-modal .cookie-actions {
  display: flex;
  gap: 14px;
  justify-content: flex-end;
  margin-top: 10px;
}
.cookie-modal .close-modal {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #181818;
  cursor: pointer;
  transition: color var(--transition);
}
.cookie-modal .close-modal:hover, .cookie-modal .close-modal:focus {
  color: var(--brand-secondary);
}

@media (max-width: 500px) {
  .cookie-modal {
    padding: 18px 8px 18px 8px;
    min-width: 0;
  }
}

/* =====================
   14. Responsive Utilities
   ===================== */
@media (max-width: 600px) {
  .container {
    padding: 0 8px;
  }
  .section {
    padding: 24px 6px;
    margin-bottom: 32px;
  }
  .cta {
    padding: 24px 0;
  }
}

/* =====================
   15. Micro-interactions
   ===================== */
.card, .feature-grid > div, .course-overview-cards > div, .course-list > div, .lecturer-profiles > div, .testimonial-card, .faq-accordion > div {
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
}
.cta-btn, .btn, button, input[type="submit"] {
  transition: background var(--transition), color var(--transition), border var(--transition), box-shadow var(--transition);
}

/* =====================
   16. Accessibility
   ===================== */
:focus {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 2px;
}

/* =====================
   17. Hide elements utility
   ===================== */
.hidden {
  display: none !important;
}

/* =====================
   18. Prevent Overlapping
   ===================== */
.card, .feature-grid > div, .course-overview-cards > div, .course-list > div, .lecturer-profiles > div, .testimonial-card, .faq-accordion > div {
  margin-bottom: 20px;
}
.section, .cta, .hero {
  margin-bottom: 60px;
}

/* =====================
   19. Print Styles
   ===================== */
@media print {
  header, footer, .cookie-banner, .mobile-menu { display: none !important; }
  .section, .cta, .hero { box-shadow: none !important; background: #fff !important; }
}