/* ===================================================================
   KRISTALLKÜCHE FORSCHUNG – MONOCHROME SOPHISTICATED CSS THEME
   Brand: KristallKüche Forschung, Style: monochrome_sophisticated
   Flexbox only layout. Responsive, accessible, modern, high-contrast.
   =================================================================== */

/* ===================================================================
   CSS RESET / NORMALIZE
   =================================================================== */
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, ul, ol, li, button, input, textarea, select, nav, footer, header, section, main, article, aside, figure, figcaption {
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  vertical-align: baseline;
  box-sizing: border-box;
}
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  background: #fff;
  color: #111;
  font-family: 'Roboto', Arial, sans-serif;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: #173B4B;
  text-decoration: none;
  transition: color 0.2s;
}
a:hover, a:focus {
  color: #000;
  text-decoration: underline;
}
ul, ol {
  list-style: none;
}

/* ===================================================================
   GLOBAL TYPOGRAPHY
   =================================================================== */
:root {
  --primary: #173B4B;
  --secondary: #3E92A3;
  --accent: #F2F4EF;
  --dark: #111;
  --black: #000;
  --white: #fff;
  --gray-100: #F7F7F7;
  --gray-200: #E6E6E6;
  --gray-300: #CCCCCC;
  --gray-400: #A0A0A0;
  --gray-500: #555;
  --gray-900: #222;
  --shadow-sm: 0 2px 8px 0 rgba(40,40,40,0.05);
  --shadow: 0 4px 20px 0 rgba(40,40,40,0.12);
  --radius: 12px;
}
body {
  font-family: 'Roboto', Arial, sans-serif;
  background: var(--white);
  color: var(--dark);
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.02em;
}
h1 { font-size: 2.6rem; margin-bottom: 20px; line-height: 1.15; }
h2 { font-size: 2rem; margin-bottom: 18px; line-height: 1.2; }
h3 { font-size: 1.4rem; margin-bottom: 12px; }
h4 { font-size: 1.1rem; }
p, li, blockquote, cite {
  font-size: 1rem;
  color: var(--dark);
}
p { margin-bottom: 18px; }
blockquote {
  font-style: italic;
  color: var(--gray-500);
  border-left: 4px solid var(--secondary);
  padding-left: 15px;
}
cite {
  display: block;
  margin-top: 10px;
  font-size: 1rem;
  color: var(--gray-400);
}
.subheadline {
  font-family: 'Montserrat', Arial, sans-serif;
  color: var(--gray-500);
  font-size: 1.3rem;
  margin-bottom: 24px;
}
strong { color: var(--secondary); font-weight: 600; }

/* ===================================================================
   REUSABLE LAYOUT CLASSES
   =================================================================== */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
}
.content-wrapper {
  width: 100%;
}
.section {
  margin-bottom: 60px;
  padding: 40px 20px;
}
.card-container {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.card {
  margin-bottom: 20px;
  position: relative;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px;
  flex: 1 1 280px;
  min-width: 260px;
}
.content-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
}
.text-image-section {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}
.testimonial-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  padding: 20px;
  margin-bottom: 20px;
  background: var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  max-width: 520px;
}
.feature-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
}

/* ===================================================================
   HEADER & NAVIGATION
   =================================================================== */
header {
  background: var(--white);
  box-shadow: 0 6px 20px -10px rgba(15, 24, 34,0.12);
  border-bottom: 1px solid var(--gray-200);
  position: relative;
  z-index: 30;
}
header .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
}
.logo img {
  height: 48px;
  width: auto;
  display: block;
}
nav {
  display: flex;
  gap: 26px;
  align-items: center;
}
nav a {
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 1.08rem;
  color: var(--gray-900);
  padding: 7px 2px;
  border-radius: 2px;
  transition: color 0.2s, background 0.2s;
  font-weight: 500;
}
nav a:hover, nav a:focus {
  color: var(--primary);
  background: var(--gray-100);
  text-decoration: none;
}
.button-primary, .button-secondary {
  display: inline-block;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  padding: 12px 28px;
  border: none;
  border-radius: 24px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
  margin-left: 20px;
  line-height: 1.1;
  text-align: center;
}
.button-primary {
  color: var(--white);
  background: var(--primary);
}
.button-primary:hover, .button-primary:focus {
  background: var(--black);
  color: var(--accent);
  box-shadow: 0 6px 28px 0 rgba(23,59,75,0.13);
}
.button-secondary {
  background: var(--accent);
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.button-secondary:hover, .button-secondary:focus {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}

/* Mobile menu button (hamburger) */
.mobile-menu-toggle {
  display: none;
}
@media (max-width: 980px) {
  header .container nav,
  header .container .button-primary {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--primary);
    position: absolute;
    top: 22px;
    right: 24px;
    z-index: 99;
    cursor: pointer;
    transition: color 0.2s;
    width: 44px;
    height: 44px;
  }
  .mobile-menu-toggle:hover, .mobile-menu-toggle:focus {
    color: var(--black);
  }
}

/* MOBILE MENU OVERLAY */
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10, 15, 22, 0.97);
  z-index: 1200;
  display: flex; /* Required per spec */
  flex-direction: column;
  align-items: flex-start;
  padding: 0 0 0 0;
  transform: translateX(-100%);
  transition: transform 0.32s cubic-bezier(.65,.05,.36,1);
  width: 100vw;
  height: 100vh;
}
.mobile-menu.open {
  transform: translateX(0);
}
.mobile-menu-close {
  color: var(--white);
  background: none;
  border: none;
  font-size: 2.1rem;
  padding: 18px 24px 12px 0;
  align-self: flex-end;
  cursor: pointer;
  transition: color 0.2s;
}
.mobile-menu-close:hover, .mobile-menu-close:focus {
  color: var(--accent);
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100vw;
  margin-top: 10px;
}
.mobile-nav a {
  color: var(--white);
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  padding: 18px 32px 18px 32px;
  text-align: left;
  border: none;
  border-left: 4px solid transparent;
  width: 100%;
  transition: background 0.2s, border-left 0.2s, color 0.18s;
}
.mobile-nav a:hover, .mobile-nav a:focus {
  background: var(--gray-900);
  color: var(--secondary);
  border-left: 4px solid var(--secondary);
}

/* Hide on desktop */
@media (min-width: 981px) {
  .mobile-menu, .mobile-menu-toggle { display: none !important; }
}

/* ===================================================================
   HERO SECTION
   =================================================================== */
.hero {
  background: linear-gradient(120deg, var(--white) 65%, var(--gray-100) 100%);
  padding: 70px 0 65px;
  margin-bottom: 60px;
}
.hero .container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.hero .content-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 600px;
  gap: 19px;
}

/* ===================================================================
   FEATURE TEASERS / GRIDS
   =================================================================== */
.feature-grid,
.research-areas-grid,
.team-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 24px;
  width: 100%;
}
.feature-grid li, .research-areas-grid li, .team-grid li {
  background: var(--gray-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 30px 22px 24px 22px;
  flex: 1 1 280px;
  min-width: 260px;
  transition: box-shadow 0.18s, transform 0.18s;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 20px;
}
.feature-grid li:hover, .research-areas-grid li:hover, .team-grid li:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px) scale(1.02);
}
.feature-grid img, .research-areas-grid img, .team-grid img {
  height: 44px;
  width: 44px;
  margin-bottom: 8px;
}

.value-list {
  display: flex;
  flex-direction: column;
  gap: 17px;
  margin-bottom: 34px;
}
.value-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 1.06rem;
  color: var(--gray-500);
}
.value-list img {
  height: 28px;
  width: 28px;
}

/* ===================================================================
   CARDS, LISTS, TEASER ELEMENTS
   =================================================================== */
.project-cards, .event-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 28px;
}
.project-card, .event-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px 20px 23px 22px;
  flex: 1 1 320px;
  min-width: 260px;
  margin-bottom: 20px;
  transition: box-shadow 0.18s, transform 0.18s;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
}
.project-card:hover, .event-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px) scale(1.015);
}
.status-label {
  font-size: 0.92rem;
  font-weight: bold;
  display: inline-block;
  margin-top: 12px;
  padding: 3px 11px;
  border-radius: 24px;
  letter-spacing: 1px;
}
.status-running {
  background: var(--secondary);
  color: var(--white);
}
.status-finished {
  background: var(--gray-300);
  color: var(--black);
}

.statistics {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  font-size: 1.12rem;
  color: var(--primary);
}
.statistics strong {
  font-size: 1.6rem;
  color: var(--black);
  margin-right: 6px;
}

/* List stylings */
.key-findings-list, .impact-stories, .highlight-list, .workflow-steps {
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin: 22px 0 28px 0;
}
.key-findings-list li, .impact-stories li, .highlight-list li, .workflow-steps li {
  color: var(--dark);
  padding-left: 28px;
  position: relative;
}
.key-findings-list li:before, .impact-stories li:before, .highlight-list li:before, .workflow-steps li:before {
  content: '\2022';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-size: 1.5em;
  line-height: 1;
  top: 3px;
}
.workflow-steps li img {
  height: 26px;
  width: 26px;
  margin-right: 12px;
  vertical-align: middle;
}
.workflow-steps li {
  display: flex;
  align-items: center;
}

/* ===================================================================
   TEAM & TESTIMONIALS
   =================================================================== */
.testimonials .testimonial-card {
  background: var(--accent);
  border-left: 5px solid var(--primary);
  color: var(--dark);
  margin-bottom: 22px;
  transition: box-shadow 0.18s;
  box-shadow: var(--shadow-sm);
}
.testimonials .testimonial-card:hover {
  box-shadow: var(--shadow);
}
.testimonials blockquote {
  font-size: 1.22rem;
  color: var(--black);
  border: none;
  padding: 0;
}
.testimonials cite {
  color: var(--gray-500);
  font-size: 0.97rem;
}

.team-grid li {
  background: var(--accent);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--secondary);
  transition: box-shadow 0.18s, border-color 0.18s;
}
.team-grid li:hover {
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow);
}
.team-grid span {
  color: var(--gray-500);
  font-size: 0.98rem;
}

/* ===================================================================
   CONTACT & LEGAL
   =================================================================== */
.contact-section, .location-section, .legal, .confirmation {
  padding: 40px 0;
  margin-bottom: 60px;
}
.contact-info-block {
  background: var(--gray-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px 22px;
  margin: 24px 0 0 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.contact-info-block img {
  height: 18px;
  width: 18px;
  vertical-align: middle;
  margin-right: 6px;
}

/* ===================================================================
   FOOTER
   =================================================================== */
footer {
  background: var(--black);
  color: var(--white);
  padding: 50px 0 20px 0;
  margin-top: 60px;
  position: relative;
  z-index: 10;
}
footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
  min-height: 32px;
}
footer nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}
footer nav a {
  color: var(--gray-300);
  font-size: 1rem;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 500;
  transition: color 0.2s;
  padding: 4px 0;
}
footer nav a:hover, footer nav a:focus {
  color: var(--accent);
  text-decoration: underline;
}
footer .contact-info {
  color: var(--white);
  font-size: 1rem;
  line-height: 1.7;
}
footer .contact-info img {
  height: 16px;
  width: 16px;
  vertical-align: middle;
  margin-right: 5px;
}
.footer-tagline {
  width: 100%;
  margin-top: 24px;
  font-family: 'Montserrat', Arial, sans-serif;
  color: var(--secondary);
  font-size: 1.2rem;
  letter-spacing: 1.5px;
  text-align: right;
}

/* ===================================================================
   COOKIE CONSENT BANNER
   =================================================================== */
.cookie-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 9999;
  background: var(--gray-900);
  color: var(--white);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 22px 16px 22px 16px;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.12);
  flex-wrap: wrap;
  gap: 18px;
  font-size: 1rem;
  line-height: 1.5;
}
.cookie-banner .cookie-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-left: 24px;
  align-items: center;
}
.cookie-banner button {
  font-family: 'Montserrat', Arial, sans-serif;
  padding: 8px 19px;
  border-radius: 21px;
  font-size: 1rem;
  border: none;
  margin-right: 4px;
  cursor: pointer;
  transition: background 0.2s;
  box-shadow: var(--shadow-sm);
}
.cookie-accept {
  background: var(--primary);
  color: var(--white);
}
.cookie-accept:hover {
  background: var(--black);
  color: var(--accent);
}
.cookie-reject {
  background: var(--white);
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.cookie-reject:hover {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}
.cookie-settings {
  background: var(--gray-200);
  color: var(--dark);
}
.cookie-settings:hover {
  background: var(--secondary);
  color: var(--white);
}

/* COOKIE PREFERENCES MODAL */
.cookie-modal {
  position: fixed;
  z-index: 10000;
  left: 0; top: 0; right: 0; bottom: 0;
  background: rgba(10, 15, 22, 0.78);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  opacity: 1;
  transition: opacity 0.22s;
}
.cookie-modal .modal-content {
  background: var(--white);
  color: var(--dark);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 42px 28px 30px 28px;
  width: 96vw;
  max-width: 410px;
  display: flex;
  flex-direction: column;
  gap: 19px;
  position: relative;
  animation: cookieModalIn 0.32s cubic-bezier(.65,.05,.36,1);
}
@keyframes cookieModalIn {
  from { opacity: 0; transform: translateY(80px) scale(.95); }
  to { opacity: 1; transform: none; }
}
.cookie-modal .modal-close {
  position: absolute;
  top: 12px;
  right: 18px;
  border: none;
  background: none;
  font-size: 2rem;
  color: var(--gray-400);
  cursor: pointer;
  transition: color 0.2s;
}
.cookie-modal .modal-close:hover {
  color: var(--primary);
}
.cookie-modal .categories {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cookie-modal .category {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cookie-modal .category label {
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--dark);
}
.cookie-modal .category input[type="checkbox"] {
  accent-color: var(--primary);
  width: 20px;
  height: 20px;
  margin-left: 12px;
}
.cookie-modal .category .always {
  font-size: 0.96rem;
  color: var(--gray-400);
  margin-left: 8px;
}
.cookie-modal .modal-buttons {
  display: flex;
  gap: 14px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* ===================================================================
   RESPONSIVE DESIGN
   =================================================================== */
@media (max-width: 1200px) {
  .container { max-width: 98vw; }
}
@media (max-width: 900px) {
  .feature-grid, .research-areas-grid, .project-cards, .event-cards, .team-grid {
    flex-direction: column;
    gap: 20px;
  }
  .feature-grid li, .research-areas-grid li, .project-card, .event-card, .team-grid li {
    min-width: 0;
    flex: 1 1 100%;
  }
  .statistics { gap: 20px; }
}
@media (max-width: 768px) {
  h1 {
    font-size: 2.1rem;
    margin-bottom: 16px;
  }
  h2 {
    font-size: 1.45rem;
    margin-bottom: 12px;
  }
  .hero {
    padding: 40px 0 36px;
  }
  .section, .contact-section, .location-section, .legal, .confirmation {
    padding: 30px 0;
    margin-bottom: 34px;
  }
  .footer-tagline {
    text-align: left;
    margin-top: 13px;
    font-size: 1.01rem;
  }
  .container {
    padding: 0 11px;
  }
  .content-wrapper {
    padding: 0;
  }
  .text-image-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 19px;
  }
}
@media (max-width: 540px) {
  .button-primary, .button-secondary {
    padding: 10px 10vw;
    font-size: 0.98rem;
    margin-left: 0;
    margin-top: 15px;
  }
  .footer-tagline { font-size: 0.91rem; }
  .hero .content-wrapper { max-width: 100vw; }
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    font-size: 0.98rem;
    padding: 14px 7px;
  }
  .cookie-banner .cookie-buttons { margin-left: 0; margin-top: 8px; gap: 7px; }
}

/* ===================================================================
   ANIMATIONS & MICRO-INTERACTIONS
   =================================================================== */
.button-primary, .button-secondary, .cookie-banner button {
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.feature-grid li, .research-areas-grid li, .project-card, .event-card, .testimonial-card, .team-grid li {
  transition: box-shadow 0.18s, transform 0.18s;
}
.project-card, .event-card, .button-primary, .button-secondary {
  will-change: box-shadow, transform;
}
.mobile-menu {
  transition: transform 0.32s cubic-bezier(.65,.05,.36,1);
}

/* ===================================================================
   PRINT OPTIMIZATION
   =================================================================== */
@media print {
  .mobile-menu, .mobile-menu-toggle, .button-primary, .button-secondary, .cookie-banner, .cookie-modal {
    display: none !important;
  }
  header, footer {
    color: #000 !important;
    background: #fff !important;
  }
}

/* ===================================================================
   END OF STYLES
   =================================================================== */