/* =======================
   CSS RESET & BASE STYLES
   ======================= */
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, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}
body {
  line-height: 1.4;
}
ol, ul {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}
img, picture, video, canvas, svg {
  display: inline-block;
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}
input, button, textarea, select {
  font: inherit;
  border: none;
  background: none;
  outline: none;
  padding: 0;
  margin: 0;
}
button, input[type="submit"] {
  cursor: pointer;
}

/* =========================
   BRAND COLOR PALETTE
   ========================= */
:root {
  --color-primary: #18547C;
  --color-secondary: #EFEFEF;
  --color-accent: #6EDAAB;
  --color-bg: #FAFAFA;
  --color-text: #232323;
  --color-grey: #B7BCC2;
  --color-border: #DDDDE3;
  --color-shadow: 0 2px 16px 0 rgba(32,42,63,0.07);
  --color-error: #c0392b;
}

/* =========================
   TYPOGRAPHY
   ========================= */
@import url('https://fonts.googleapis.com/css?family=Roboto+Slab:400,700&display=swap');
@import url('https://fonts.googleapis.com/css?family=Open+Sans:400,700&display=swap');

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: 'Open Sans', Arial, Helvetica, sans-serif;
  font-size: 16px;
  min-height: 100vh;
  letter-spacing: 0.01em;
  line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Roboto Slab', Times, serif;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
}
h1 { font-size: 2.4rem; margin-bottom: 20px; }
h2 { font-size: 2rem; margin-bottom: 16px; }
h3 { font-size: 1.4rem; margin-bottom: 12px; }
h4 { font-size: 1.1rem; }

p, ul, ol {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 14px;
}
.hero-subheadline, .thank-you-message {
  font-size: 1.25rem;
  font-family: 'Open Sans', Arial, Helvetica, sans-serif;
  color: var(--color-text);
  margin-bottom: 24px;
  max-width: 38em;
}

strong, b {
  font-weight: 700;
}

/* =====================
   CONTAINER & LAYOUT
   ===================== */
.container {
  width: 100%;
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.content-wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
  padding: 0;
  margin: 0;
}

.section, .about-section, .about-detailed-section, .feature-section,
.events-section, .research-areas-section, .highlights-section,
.publications-list-section, .legal-section, .contact-section, .thank-you-section, .testimonials-section, .features-section, .hero-section, .cta-section {
  margin-bottom: 60px;
  padding: 40px 20px;
  background: transparent;
  border-radius: 12px;
}

/* Ensure no overlap between cards/sections */
.card-container, .footer-columns, .feature-grid, .feature-list, .content-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.card {
  background: #fff;
  box-shadow: var(--color-shadow);
  border-radius: 12px;
  padding: 32px 24px;
  margin-bottom: 20px;
  position: relative;
  min-width: 260px;
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: box-shadow .24s;
}
.card:hover {
  box-shadow: 0 6px 24px 0 rgba(32,42,63,0.13);
}

.text-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 1rem;
}
.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;
}

/* ================
   HEADER & NAVBAR
   ================ */
header {
  background: #fff;
  box-shadow: 0 2px 16px rgba(24,84,124,0.03);
  position: sticky;
  top: 0;
  z-index: 101;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-top: 16px;
  padding-bottom: 16px;
  gap: 24px;
}
.logo img {
  max-height: 42px;
  width: auto;
  display: block;
}
.main-nav {
  display: flex;
  gap: 20px;
  margin-left: 34px;
}
.main-nav a {
  font-family: 'Roboto Slab', Times, serif;
  font-size: 1.1rem;
  color: var(--color-primary);
  opacity: 0.93;
  padding: 4px 2px;
  position: relative;
  transition: color .18s;
}
.main-nav a:hover, .main-nav a:focus {
  color: var(--color-accent);
  text-decoration: underline;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-radius: 24px;
  padding: 10px 28px;
  font-family: 'Roboto Slab', Times, serif;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 10px rgba(24,84,124,0.10);
  transition: background .2s, color .17s, box-shadow .2s;
  outline: none;
  border: none;
  display: inline-block;
  margin-left: 28px;
}
.btn-primary:disabled {
  opacity: .5;
  cursor: not-allowed;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--color-accent);
  color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(24,84,124,0.12);
}

/* ==========
  BURGER MENU
  ========== */
.mobile-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--color-primary);
  margin-left: auto;
  z-index: 120;
  cursor: pointer;
  transition: color .18s;
}
.mobile-menu-toggle:focus {
  color: var(--color-accent);
}
.mobile-menu {
  position: fixed;
  z-index: 200;
  background: #fff;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100vw;
  height: 100vh;
  transform: translateX(-100%);
  transition: transform .4s cubic-bezier(.8, .2, .2, 1);
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
}
.mobile-menu.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-close {
  align-self: flex-end;
  margin: 24px 24px 0 0;
  background: none;
  border: none;
  font-size: 2.1rem;
  color: var(--color-primary);
  cursor: pointer;
  transition: color .2s;
  z-index: 210;
}
.mobile-menu-close:hover, .mobile-menu-close:focus {
  color: var(--color-accent);
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 25px;
  align-items: flex-start;
  margin: 48px 0 0 48px;
}
.mobile-nav a {
  font-size: 1.3rem;
  font-family: 'Roboto Slab', Times, serif;
  color: var(--color-primary);
  padding: 8px 2px;
  border-radius: 0;
  transition: color .18s;
  min-width: 44px;
}
.mobile-nav a:hover,
.mobile-nav a:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

@media (min-width: 981px) {
  .mobile-menu,
  .mobile-menu-toggle {
    display: none !important;
  }
}
@media (max-width: 980px) {
  .main-nav, .btn-primary {
    display: none;
  }
  header .container {
    flex-direction: row;
    gap: 14px;
  }
}

/* ===================
   HERO SECTION
   =================== */
.hero-section {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  min-height: 320px;
  border-radius: 0 0 28px 28px;
  box-shadow: 0 4px 24px rgba(24,84,124,0.07);
}
.hero-section h1 {
  font-size: 2.6rem;
  color: var(--color-primary);
  margin-bottom: 18px;
}
.hero-section .hero-subheadline {
  color: var(--color-text);
  margin-bottom: 34px;
}

/* =======================
   FEATURES & CARDS
   ======================= */
.features-section, .highlights-section {
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--color-shadow);
}
.feature-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.feature-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
  background: var(--color-secondary);
  border-radius: 15px;
  padding: 28px 22px 24px 22px;
  box-shadow: 0 2px 10px rgba(24,84,124,0.07);
  flex: 1 1 260px;
  min-width: 230px;
  transition: box-shadow .19s, background .2s;
  margin-bottom: 20px;
}
.feature-item img {
  width: 36px; height: 36px;
  margin-bottom: 1px;
  filter: grayscale(20%);
}
.feature-item h3 {
  font-size: 1.18rem;
}
.feature-item:hover, .feature-item:focus-within {
  background: var(--color-accent);
  box-shadow: 0 6px 24px rgba(24,84,124,0.12);
  color: var(--color-primary);
}
.feature-item:hover h3, .feature-item:hover p {
  color: var(--color-primary);
}

/* =====================
   TESTIMONIALS
   ===================== */
.testimonials-section {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--color-shadow);
}
.testimonial-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--color-secondary);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 8px rgba(24,84,124,0.06);
  color: var(--color-text);
  font-size: 1rem;
  position: relative;
  flex-direction: row;
}
.testimonial-card p {
  font-style: italic;
  font-family: 'Open Sans', Arial, sans-serif;
  color: var(--color-text);
}
.testimonial-author {
  color: var(--color-primary);
  font-weight: 700;
  font-family: 'Roboto Slab', Times, serif;
  margin-left: 20px;
  white-space: nowrap;
}
@media (max-width: 600px) {
  .testimonial-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .testimonial-author {
    margin-left: 0;
  }
}

/* ==================
   CTA SECTION
   ================== */
.cta-section {
  background: var(--color-primary);
  color: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(24,84,124,0.08);
  text-align: left;
}
.cta-section h2, .cta-section p {
  color: #fff;
}
.cta-section .btn-primary {
  background: #fff;
  color: var(--color-primary);
  margin-left: 0;
}
.cta-section .btn-primary:hover, .cta-section .btn-primary:focus {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* ============================
   ABOUT, CONTACT, LEGAL SECTIONS
   ============================ */
.about-section, .about-detailed-section,
.feature-section, .legal-section, .contact-section,
.thank-you-section, .publications-list-section, .events-section {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--color-shadow);
}
.about-section h2, .about-detailed-section h2, .feature-section h2,
.legal-section h2, .contact-section h2 {
  color: var(--color-primary);
}
.text-section ul, .text-section ol {
  margin-left: 16px;
  margin-bottom: 12px;
  list-style: disc;
}
.text-section ul li, .text-section ol li {
  margin-bottom: 6px;
  color: var(--color-text);
  font-size: 1rem;
}
.text-section ul li img {
  vertical-align: middle;
  margin-right: 7px;
}

/* =====================
   FOOTER
   ===================== */
footer {
  background: var(--color-secondary);
  color: var(--color-text);
  padding: 0 0 0 0;
  border-top: 1px solid var(--color-border);
}
.footer-columns {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  align-items: flex-start;
  padding: 32px 0 14px 0;
}
.footer-logo img {
  max-width: 58px;
  margin-bottom: 12px;
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 1rem;
  margin-bottom: 18px;
}
.footer-nav a {
  color: var(--color-primary);
  transition: color .19s;
}
.footer-nav a:hover,
.footer-nav a:focus {
  color: var(--color-accent);
  text-decoration: underline;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: .95rem;
}
.footer-contact span {
  display: flex;
  align-items: center;
  gap: 7px;
}
.footer-contact img {
  width: 18px; height: 18px;
}
.footer-newsletter form {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-newsletter label {
  font-size: 1rem;
  font-family: 'Roboto Slab', Times, serif;
}
.footer-newsletter input[type="email"] {
  padding: 9px 18px;
  font-size: 1rem;
  border-radius: 17px;
  border: 1px solid var(--color-border);
  background: #fff;
  min-width: 180px;
  max-width: 210px;
  transition: border .17s;
}
.footer-newsletter input[type="email"]:focus {
  border: 1.5px solid var(--color-primary);
}
.footer-newsletter .btn-primary {
  font-size: 1rem;
  padding: 8px 20px;
  margin-left: 0;
}
.footer-social {
  display: flex;
  gap: 18px;
}
.footer-social img {
  width: 28px; height: 28px;
  transition: filter .18s;
  filter: grayscale(.6) brightness(0.92);
  opacity: 0.8;
}
.footer-social img:hover {
  filter: grayscale(0) brightness(1.2);
  opacity: 1;
}
.footer-note {
  border-top: 1px solid var(--color-border);
  margin-top: 30px;
  padding: 16px 0 24px 0;
  font-size: .97rem;
  color: var(--color-grey);
  text-align: center;
}

/* =====================
   COOKIE CONSENT BANNER
   ===================== */
.cookie-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  width: 100vw;
  background: #fff;
  color: var(--color-text);
  box-shadow: 0 -2px 18px rgba(24,84,124,0.09);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  font-size: 1rem;
  padding: 20px 18px;
  z-index: 999;
  opacity: 1;
  transition: opacity .28s, transform .3s;
  border-radius: 18px 18px 0 0;
  visibility: visible;
}
.cookie-banner.hide {
  opacity: 0;
  pointer-events: none;
  transform: translateY(120%);
  visibility: hidden;
}
.cookie-banner .cookie-text {
  max-width: 460px;
  flex: 1 1 300px;
}
.cookie-banner .cookie-actions {
  display: flex;
  gap: 14px;
}
.cookie-banner button {
  padding: 7px 22px;
  border-radius: 18px;
  border: none;
  font-size: 1rem;
  font-family: 'Roboto Slab', Times, serif;
  margin: 0;
  transition: background .19s, color .17s;
  box-shadow: 0 1px 4px rgba(24,84,124,0.05);
}
.cookie-banner .cookie-accept {
  background: var(--color-primary);
  color: #fff;
}
.cookie-banner .cookie-accept:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}
.cookie-banner .cookie-reject {
  background: #fff;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.cookie-banner .cookie-reject:hover {
  background: var(--color-primary);
  color: #fff;
}
.cookie-banner .cookie-settings {
  background: var(--color-accent);
  color: var(--color-primary);
}
.cookie-banner .cookie-settings:hover {
  background: #fff;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

@media (max-width: 600px) {
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 18px 10px 12px 10px;
    font-size: .94rem;
  }
  .cookie-banner .cookie-actions {
    width: 100%;
    gap: 7px;
    flex-wrap: wrap;
  }
}

/* ================
   COOKIE MODAL
   ================ */
.cookie-modal-overlay {
  position: fixed;
  background: rgba(24,84,124,0.23);
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 1100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .23s;
}
.cookie-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.cookie-modal {
  background: #fff;
  border-radius: 18px 18px 0 0;
  width: 98vw;
  max-width: 410px;
  box-shadow: 0 2px 32px rgba(24,84,124,0.13);
  padding: 36px 26px 26px 26px;
  margin-bottom: 0;
  animation: slideUpModal .32s cubic-bezier(.6,.07,.5,1.08);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
@keyframes slideUpModal {
  from { transform: translateY(70px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}
.cookie-modal h2 {
  font-size: 1.35rem;
  margin-bottom: 3px;
}
.cookie-modal .cookie-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  font-family: 'Open Sans', Arial, sans-serif;
}
.cookie-modal .cookie-category label {
  font-size: 1rem;
  color: var(--color-primary);
}
.cookie-modal .toggle {
  position: relative;
  width: 44px; height: 24px;
}
.cookie-modal .toggle input {
  opacity: 0; width: 0; height: 0;
}
.cookie-modal .slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-secondary);
  border-radius: 20px;
  transition: background .19s;
}
.cookie-modal .toggle input:checked + .slider {
  background: var(--color-accent);
}
.cookie-modal .slider:before {
  content: '';
  position: absolute;
  left: 2px; top: 2px;
  width: 20px; height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform .21s;
  box-shadow: 0 1px 4px rgba(24,84,124,0.07);
}
.cookie-modal .toggle input:checked + .slider:before {
  transform: translateX(20px);
}
.cookie-modal .modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}
.cookie-modal .cookie-save {
  background: var(--color-primary);
  color: #fff;
  border-radius: 18px;
  font-family: 'Roboto Slab', Times, serif;
  padding: 8px 22px;
  border: none;
  transition: background .17s;
}
.cookie-modal .cookie-save:hover,
.cookie-modal .cookie-save:focus {
  background: var(--color-accent);
  color: var(--color-primary);
}
.cookie-modal .cookie-cancel {
  background: #fff;
  color: var(--color-primary);
  border-radius: 18px;
  border: 1px solid var(--color-border);
  font-family: 'Roboto Slab', Times, serif;
  padding: 8px 19px;
}

/* =======================
   THANK YOU & STATUS
   ======================= */
.thank-you-section {
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--color-shadow);
  text-align: left;
}
.thank-you-section h1 {
  color: var(--color-accent);
  margin-bottom: 24px;
}

/* ===========================
   RESPONSIVE ADAPTATIONS
   =========================== */
@media (max-width: 1023px) {
  .footer-columns {
    gap: 24px;
  }
  .footer-logo img {
    max-width: 40px;
  }
}
@media (max-width: 800px) {
  .container {
    padding-left: 10px; padding-right: 10px;
  }
  .footer-columns {
    flex-direction: column;
    gap: 18px;
    align-items: stretch;
  }
  .footer-logo {
    margin-bottom: 0;
  }
  .hero-section {
    padding: 32px 10px;
  }
}
@media (max-width: 768px) {
  .content-wrapper, .feature-grid {
    flex-direction: column;
    gap: 14px;
  }
  .container {
    padding-left: 8px; padding-right: 8px;
  }
  .hero-section {
    min-height: 210px;
    padding: 22px 6px;
  }
  .about-section, .about-detailed-section, .feature-section, .legal-section, .contact-section,
  .thank-you-section, .publications-list-section, .events-section, .features-section, .cta-section, .testimonials-section {
    margin-bottom: 38px;
    padding: 22px 7px;
  }
  .feature-item, .card {
    min-width: 100px;
    padding: 18px 12px 16px 12px;
  }
}
@media (max-width: 500px) {
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.18rem; }
  h3 { font-size: 1rem; }
  .btn-primary {
    font-size: .98rem;
    padding: 8px 14px;
  }
  .footer-columns {
    gap: 10px;
  }
}

/* =====================
   UI INTERACTIONS
   ===================== */
input[type="email"]:invalid {
  border: 1px solid var(--color-error);
  background: #fff4f3;
}

::-webkit-input-placeholder { color: var(--color-grey); opacity: 0.96; }
::-moz-placeholder          { color: var(--color-grey); opacity: 0.96; }
:-ms-input-placeholder      { color: var(--color-grey); opacity: 0.96; }
::placeholder              { color: var(--color-grey); opacity: 0.96; }

button:focus {
  outline: 2px solid var(--color-accent);
}

/* Transition for navigation and overlays */
.mobile-menu,
.cookie-banner,
.cookie-modal-overlay {
  will-change: transform, opacity;
}

/* =====================
   VISUAL ENHANCEMENTS
   ===================== */
.card, .feature-item, .testimonial-card, .about-section, .legal-section, .contact-section, .thank-you-section {
  box-shadow: var(--color-shadow);
}

.section:not(:last-child),
.about-section:not(:last-child),
.legal-section:not(:last-child),
.feature-section:not(:last-child),
.testimonials-section:not(:last-child),
.contact-section:not(:last-child),
.cta-section:not(:last-child),
.publications-list-section:not(:last-child),
.events-section:not(:last-child),
.thank-you-section:not(:last-child) {
  margin-bottom: 60px;
}

/* ===============
   PRINT STYLES
   =============== */
@media print {
  header, nav, .mobile-menu, .cookie-banner, .cookie-modal-overlay, footer {
    display: none !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
}