:root {
  --bg-color: #f4f6f9;
  --text-color: #1a202c;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(43, 68, 122, 0.15);
  --glass-shadow: rgba(0, 0, 0, 0.05);
  --primary-blue: #1E3A8A;
  --cyan-accent: #06B6D4;
  --blob-1: #1E3A8A;
  --blob-2: #06B6D4;
}

[data-theme="dark"] {
  --bg-color: #0f172a;
  --text-color: #f1f5f9;
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(6, 182, 212, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.4);
  --primary-blue: #06B6D4;
  --cyan-accent: #3B82F6;
  --blob-1: #06B6D4;
  --blob-2: #1E3A8A;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  transition: background-color 0.4s ease, color 0.4s ease;
}

.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  z-index: -1;
  opacity: 0.4;
  animation: moveBlobs 20s infinite alternate;
}

.blob-1 {
  width: 450px;
  height: 450px;
  background: var(--blob-1);
  top: -150px;
  left: -150px;
}

.blob-2 {
  width: 350px;
  height: 350px;
  background: var(--blob-2);
  bottom: -100px;
  right: -100px;
}

@keyframes moveBlobs {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 120px) scale(1.1); }
  100% { transform: translate(-60px, 60px) scale(0.9); }
}

.glass-nav {
  position: fixed;
  top: 0;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 1rem 5%;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-self: start;
}

.site-logo {
  height: 40px;
  width: auto;
  border-radius: 8px;
  object-fit: cover;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
  background: linear-gradient(45deg, var(--primary-blue), var(--cyan-accent));
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-self: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--primary-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-self: end;
}

#theme-toggle, #mobile-menu-btn {
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  backdrop-filter: blur(4px);
  transition: all 0.3s ease;
}

#theme-toggle:hover, #mobile-menu-btn:hover {
  border-color: var(--cyan-accent);
}

.theme-icon {
  width: 20px;
  height: 20px;
}

.hidden {
  display: none;
}

#mobile-menu-btn {
  display: none;
}

#mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

section, header, footer {
  padding: 8rem 5% 4rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

footer {
  min-height: auto;
  padding-top: 4rem;
}

.glass-container {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 4rem;
  width: 100%;
  max-width: 1200px;
  box-shadow: 0 8px 32px var(--glass-shadow);
  text-align: center;
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.highlight {
  color: var(--primary-blue);
}

.hero p, #about p {
  font-size: 1.15rem;
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--primary-blue);
  color: #fff;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 15px var(--glass-shadow);
  transition: transform 0.3s ease, background 0.3s ease;
}

.btn:hover {
  transform: translateY(-3px);
  background: var(--cyan-accent);
  color: #fff;
}

h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--primary-blue);
}

.project-header {
  margin-bottom: 3rem;
}

.project-title-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 1.5rem;
}

.project-app-logo {
  height: 50px;
  width: auto;
  border-radius: 12px;
  box-shadow: 0 4px 15px var(--glass-shadow);
}

.project-header h3 {
  font-size: 2rem;
  color: var(--text-color);
  font-weight: 700;
}

.project-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 900px;
  margin: 0 auto;
  font-weight: 300;
  opacity: 0.9;
}

.project-vitrin {
  max-width: 900px;
  margin: 0 auto 3.5rem;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vitrin-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  border-radius: 10px;
  cursor: zoom-in;
  transition: transform 0.3s ease;
}

.vitrin-img:hover {
  transform: scale(1.01);
}

.glass-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  transition: transform 0.4s ease, border-color 0.4s ease, background-color 0.4s ease;
}

.slider-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1rem 1rem;
}

.slider-container {
  overflow: hidden;
  width: 100%;
}

.slider-track {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.slide {
  min-width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0 2rem;
}

.slide-img-box {
  height: 350px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
}

.slide-img-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
}

.zoomable-img {
  cursor: zoom-in;
  transition: transform 0.3s ease;
}

.zoomable-img:hover {
  transform: scale(1.02);
}

.vitrin-img.zoomable-img:hover {
  transform: scale(1.01); 
}

.slide-content h4 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.slide-content p {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

.slider-btn {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all 0.3s ease;
}

.slider-btn svg {
  width: 24px;
  height: 24px;
}

.slider-btn:hover {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
}

.prev-btn { left: 10px; }
.next-btn { right: 10px; }

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 2rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--glass-border);
  border: none;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.dot.active {
  background: var(--primary-blue);
  transform: scale(1.2);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.team-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
}

.team-card:hover {
  transform: translateY(-8px);
  border-color: var(--cyan-accent);
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border: 3px solid var(--glass-border);
}

.team-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-align: center;
}

.linkedin-btn {
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--primary-blue);
  color: var(--text-color);
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.linkedin-btn svg {
  width: 18px;
  height: 18px;
}

.linkedin-btn:hover {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
}

.footer-glass {
  padding: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 3rem;
  text-align: left;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 3rem;
}

.footer-col h4 {
  color: var(--primary-blue);
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.brand-col p {
  margin-top: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.8;
}

.links-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.links-col a {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

.links-col a:hover {
  color: var(--cyan-accent);
}

.contact-col p {
  font-size: 0.95rem;
  line-height: 1.6;
  opacity: 0.8;
  margin-bottom: 1.5rem;
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.email-link:hover {
  color: var(--cyan-accent);
}

.mail-icon {
  width: 24px;
  height: 24px;
}

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

.copyright {
  font-size: 0.9rem;
  font-weight: 300;
  opacity: 0.7;
}

.lightbox {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.show {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}

.lightbox-content {
  margin: auto;
  display: block;
  max-width: 90%;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
  animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.close-lightbox {
  position: absolute;
  top: 30px;
  right: 40px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.close-lightbox:hover {
  color: var(--cyan-accent);
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 992px) {
  .hero h1 { font-size: 2.8rem; }
  .glass-container { padding: 3rem 2rem; }
  .slide { padding: 0 1rem; }
}

@media (max-width: 768px) {
  .glass-nav { grid-template-columns: 1fr auto; }
  #mobile-menu-btn { display: flex; }
  
  .nav-links {
    position: absolute;
    top: 100%;
    left: -100%;
    width: 100%;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 2rem 0;
    border-bottom: 1px solid var(--glass-border);
    transition: left 0.4s ease;
    justify-self: auto;
  }

  .nav-links.active { left: 0; }
  .nav-actions { justify-self: end; }
  .hero h1 { font-size: 2.2rem; }
  .glass-container { padding: 2rem 1.5rem; }
  
  .project-vitrin {
    margin-bottom: 2rem;
    padding: 0.5rem;
  }

  .slide-img-box {
    height: 250px;
  }
  
  .slider-btn {
    width: 40px;
    height: 40px;
  }
  
  .prev-btn { left: -5px; }
  .next-btn { right: -5px; }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .logo-container {
    justify-content: center;
  }
}