:root {
  --color-dark: #0B0C10;
  --color-darker: #334255;
  --color-light: #C5C6C7;
  --color-accent: #66FCF1;
  --color-secondary: #45A29E;
  --color-white: #FFFFFF;
  
  /* Navigation variables */
  --nav-mobile-side-margin: 20px;  /* Space from edges of screen */
  --nav-mobile-link-gap: 10px;     /* Space between nav links */
}

body {
  margin: 0;
  font-family: 'Lexend', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--color-darker);
  color: var(--color-light);
  overflow-x: hidden;
}

.drop-down {
  transform: translateY(-100%);
  animation: dropDown 0.6s ease-out forwards;
  animation-delay: 0.3s;
}

@keyframes dropDown {
  to {
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s forwards;
}

.fade-delay-1 { animation-delay: 1s; }
.fade-delay-2 { animation-delay: 1.4s; }
.fade-delay-3 { animation-delay: 1.8s; }
.fade-delay-4 { animation-delay: 2.2s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

nav {
  background-color: var(--color-dark);
  color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2px 22px;
}

nav .logo-container {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 11px;
  position: relative;
}

.logo-stack {
  position: relative;
  width: 90px;
  height: 90px;
}

.logo-stack img {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  object-fit: contain;
}

.logo-stack .spinning {
  animation: spin 36s linear infinite;
  transform-origin: center;
}

.logo-stack .static {
  z-index: 2;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

nav .nav-links {
  display: flex;
  justify-content: center;
  gap: var(--nav-mobile-link-gap);
  flex: 1;
  padding: 0 var(--nav-mobile-side-margin);
}

nav a {
  color: var(--color-white);
  text-decoration: none;
  font-size: 1.1rem;
  white-space: nowrap;
  transition: all 0.18s cubic-bezier(0.4, 0.2, 0.2, 1);
}

nav a:hover {
  color: var(--color-accent);
  font-size: 1.3rem;
  font-weight: bold;
  transform: scale(1.18);
  text-shadow: 0 2px 8px rgba(102,252,241,0.18);
}

.section {
  padding: 40px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-darker);
  color: var(--color-light);
}

.section h1 {
  flex-basis: 100%;
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--color-white);
  text-align: left;
}

.viewer-container {
  width: 50%;
  height: 400px;
  flex: 0 0 50%;
}

.paragraph {
  width: 48%;
  margin-left: 2%;
  flex: 0 0 48%;
}

.paragraph p {
  word-wrap: break-word;
  line-height: 1.6;
  font-size: 1.6rem;
  font-weight: 600;
}

.cta-section {
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-section h2 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: 20px;
  text-align: center;
}

.team-headshots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
}

.team-member {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.team-member img {
  width: 225px;
  height: 225px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--color-light);
}

.team-member .name {
  margin-top: 10px;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--color-white);
}

.team-member .title {
  font-size: 1rem;
  color: #ddd;
}

.mission-section {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: 40px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.mission-text {
  flex: 1 1 60%;
}

.mission-text h2 {
  font-size: 2rem;
  color: var(--color-white);
  margin-bottom: 15px;
}

.mission-text p {
  font-size: 1.3rem;
  line-height: 1.6;
  font-weight: 700;
}

.mission-logo {
  flex: 1 1 30%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 560px;
}

.mission-logo .logo-stack {
  width: 560px;
  height: 560px;
}

.sponsor-placeholder {
  margin-top: 90px;
  text-align: center;
}

.sponsor-placeholder p {
  font-size: 1.1rem;
  margin-bottom: 15px;
  font-weight: 600;
  color: var(--color-white);
}

.sponsor-placeholder button {
  background-color: var(--color-accent);
  color: var(--color-dark);
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}

.sponsor-placeholder button:hover {
  background-color: var(--color-light);
  transition: all 0.2s ease-in-out;
  transform: scale(2.05);
}

footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  text-align: center;
  padding: 10px;
  margin-top: 0;
  position: relative;
  border-top: 1px solid var(--color-darker);
}

#mobileNav {
  display: flex;
}

.instagram-section {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: 40px 40px 0 40px;
  text-align: center;
  margin-bottom: 0;
  padding-bottom: 30px;
}

.instagram-section h2 {
  color: var(--color-light);
  font-size: 2rem;
  margin-bottom: 30px;
}

.instagram-carousel-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  margin-bottom: 0;
  height: 500px;
}

.instagram-carousel {
  display: flex;
  gap: 20px;
  animation: scrollLeft 120s linear infinite;
  padding: 10px 0 0 0;
  margin-bottom: 0;
  width: fit-content;
  height: 100%;
  align-items: flex-start;
}

@keyframes scrollLeft {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-210px * 20 - 20px * 20));
  }
}

.instagram-carousel:hover {
  animation-play-state: paused;
}

.embed-wrapper {
  flex: 0 0 auto;
  max-width: 210px;
  width: 210px;
  height: 405px;
  padding: 0;
  box-sizing: border-box;
  background-color: transparent;
  border-radius: 0;
  box-shadow: none;
  overflow: hidden;
}

.instagram-media {
  margin: 0 auto !important;
  background-color: transparent !important;
  color: var(--color-light) !important;
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  height: 100% !important;
  border: none !important;
  border-radius: 0 !important;
}

html {
  scroll-behavior: smooth;
}

#team {
  scroll-margin-top: 130px;
}

.mentoring-section {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: 40px;
  text-align: center;
}

.mentoring-section h2 {
  color: var(--color-accent);
  font-size: 2.2rem;
  margin-bottom: 18px;
}

.mentoring-section p {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.mentoring-section a {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-dark);
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s;
}

.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: center;
  justify-items: center;
  margin-bottom: 18px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 20px;
}

.sponsor-item {
  width: 100%;
  max-width: 250px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.sponsor-item img {
  width: 100%;
  height: auto;
}

.sponsor-item:nth-child(2) {
  max-width: 400px;
}

#navbar-dropdown {
  display: none;
  position: absolute;
  right: 20px;
  color: var(--color-accent);
  transform: scale(2);
}

#dropdown-bits {
  position: absolute;
  right: 0px;
  top: 38px;
  background-color: var(--color-dark);
  border-radius: 5px;
  padding: 8px;
  overflow: hidden;
  opacity: 0;
  max-height: 0px;
  transition: opacity 0.3s ease, max-height 0.3s ease;
  pointer-events: none;
}

#dropdown-bits.show {
  opacity: 1;
  max-height: 300px;
  pointer-events: auto;
  padding: 8px;
}

.dropdown-item {
  padding: 3px;
}

.dropdown-item:hover {
  background-color: var(--color-darker);
  border-radius: 10px;
}

.mobile-nav-text {
  color: var(--color-light);
  font-size: 30px;
}

/* Mobile Styles */
@media (max-width: 768px) {
  nav {
    flex-direction: row;
    padding: 2px 2px;
    height: 30px;
    align-items: center;
    display: flex;
    justify-content: center;
  }

  nav .logo-container {
    position: absolute;
    left: 18px;
    width: 30px;
    height: 30px;
    margin: 0;
  }

  nav .logo-stack {
    width: 30px;
    height: 30px;
  }
  
  .mobile-hide {
    display: none !important;
  }

  .drop-down {
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .viewer-container, .paragraph, .mission-text, .mission-logo {
    flex: 1 1 100%;
    max-width: 100%;
    margin-left: 0;
    text-align: center;
  }

  .viewer-container {
    display: none;
  }

  .logo {
    transform: scale(1.1);
  }

  .mission-logo {
    min-height: 280px;
  }

  .mission-logo .logo-stack {
    width: 280px;
    height: 280px;
  }

  .sponsor-placeholder {
    margin-top: 30px;
  }

  .section h1 {
    font-size: 1.8rem;
    margin-bottom: 15px;
  }

  .paragraph p {
    font-size: 1.2rem;
    line-height: 1.4;
  }

  .mission-text h2 {
    font-size: 1.6rem;
  }

  .mission-text p {
    font-size: 1.1rem;
    line-height: 1.4;
  }

  .cta-section h2 {
    font-size: 1.8rem;
    padding-left: 20px;
  }

  #chair69 p {
    font-size: 1.2rem;
    line-height: 1.4;
  }

  .viewer-container {
    height: 300px;
  }

  .mentoring-section h2 {
    font-size: 1.6rem;
  }

  .mentoring-section p {
    font-size: 1.1rem;
  }

  .mentoring-section a {
    font-size: 1rem;
    padding: 12px 24px;
  }

  .sponsor-placeholder p {
    font-size: 0.9rem;
  }

  .sponsor-placeholder div {
    font-size: 0.9rem;
  }

  .sponsor-placeholder button {
    font-size: 0.9rem;
    padding: 8px 16px;
  }

  .sponsor-placeholder img {
    max-width: 180px;
  }

  .instagram-section h2 {
    font-size: 1.6rem;
  }

  .sponsor-logo {
    max-width: 150px !important;
  }
  
  img[alt="Delsan Logo"].sponsor-logo {
    max-width: 200px !important;
  }

  .sponsor-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .sponsor-placeholder > div:first-of-type {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
  }

  .sponsor-logo {
    max-width: 120px !important;
  }
  
  img[alt="Delsan Logo"].sponsor-logo {
    max-width: 160px !important;
  }

  a[href="https://polymaker.com/"] {
    flex-basis: 100%;
    display: flex;
    justify-content: center;
  }

  a[href="https://polymaker.com/"] img {
    max-width: 140px !important;
  }

  .donor-text {
    margin-top: 20px !important;
    font-size: 0.8rem !important;
  }

  nav .nav-links {
    width: 10%;
    margin: 0 auto;
    justify-content: space-between;
  }

  #carViewer {
    height: 200px !important;
    --camera-orbit: "270deg 75deg 3.5m" !important;
    --min-camera-orbit: "270deg 45deg 2.2m" !important;
    --max-camera-orbit: "450deg 80deg 10m" !important;
  }

  .viewer-container:first-of-type {
    height: 200px !important;
    margin-bottom: 10px;
  }

  .section {
    padding: 20px;
  }

  .section h1 {
    margin-bottom: 15px;
  }

  .paragraph {
    margin-top: 0;
  }

  .viewer-container + .paragraph {
    margin-top: 10px;
  }

  #chair69 {
    flex-direction: column;
    height: fit-content;
  }

  #chair69 .viewer-container {
    display: none;
  }

  #chair69 > div:first-child {
    flex: 1;
    width: 100%;
  }

  .cta-section {
    padding-bottom: 20px;
  }

  #team {
    scroll-margin-top: 50px;
  }

  .embed-wrapper {
    max-width: 180px;
    width: 180px;
    height: 345px;
  }

  .instagram-carousel {
    animation: scrollLeft 80s linear infinite;
  }

  @keyframes scrollLeft {
    0% {
      transform: translateX(0);
    }
    100% {
      transform: translateX(calc(-180px * 20 - 20px * 20));
    }
  }

  .sponsor-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 0 10px;
  }

  .sponsor-item {
    max-width: 140px;
  }

  .sponsor-item:nth-child(2) {
    max-width: 180px;
  }

  .sponsor-item.polymaker {
    grid-column: 1 / -1;
    max-width: 140px;
    justify-self: center;
  }
}