/* NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 249, 246, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="dark"] .navbar {
  background-color: rgba(15, 23, 42, 0.85);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: transform var(--transition-fast);
}

.nav-logo:hover {
  transform: translateY(-1px);
}

.nav-logo-heart {
  width: 18px;
  height: 18px;
  display: inline-block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--brand-blue);
  border-radius: var(--radius-full);
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link:hover::after {
  width: 100%;
}

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

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--brand-blue-soft);
  border-color: var(--brand-blue);
  transform: scale(1.05);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}

.hamburger span {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

/* HERO SECTION */
.hero {
  padding: 4rem 0 5rem 0;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--brand-blue-soft);
  border: 1px solid var(--brand-blue);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  width: fit-content;
}

.hero-badge img {
  width: 16px;
  height: 16px;
}

.hero-title {
  width: 220px;
  height: 60px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  font-weight: 500;
  max-width: 520px;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--brand-blue);
  color: #0F172A;
  box-shadow: var(--card-shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
  filter: brightness(1.05);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-alt);
  border-color: var(--brand-blue);
  transform: translateY(-2px);
}

.btn img {
  width: 18px;
  height: 18px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-header-card {
  background-color: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--card-shadow);
  position: relative;
  width: 100%;
  max-width: 380px;
  transition: transform var(--transition-normal);
}

.hero-header-card:hover {
  transform: translateY(-4px);
}

.hero-header-card img.header-img {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.sticker {
  position: absolute;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.08));
  transition: transform var(--transition-normal);
  pointer-events: none;
}

.sticker-star {
  top: -15px;
  right: -10px;
  width: 38px;
  animation: float 4s ease-in-out infinite;
}

.sticker-rocket {
  bottom: -20px;
  left: -20px;
  width: 46px;
  animation: float 5s ease-in-out infinite 1s;
}

.sticker-code {
  top: 40%;
  left: -25px;
  width: 36px;
  animation: float 4.5s ease-in-out infinite 0.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(3deg); }
}

/* ABOUT SECTION */
.about-section {
  padding: 4rem 0;
}

.about-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  position: relative;
}

.about-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  list-style: none;
}

.about-bullet-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-main);
}

.about-bullet-item img {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.about-text {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px dashed var(--border-color);
  padding-top: 1.5rem;
  margin-top: 0.5rem;
}

/* FEATURED / SENTINEL SECTION */
.featured-section {
  padding: 4rem 0;
}

.featured-card {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-alt) 100%);
  border: 2px solid var(--brand-blue);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--brand-yellow);
  color: #0F172A;
  font-family: var(--font-display);
  font-size: 0.85rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  font-weight: 700;
  text-transform: lowercase;
}

.featured-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.featured-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.featured-title-group img {
  width: 36px;
  height: 36px;
}

.featured-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--text-main);
}

.featured-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 720px;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.featured-feature {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.featured-feature:hover {
  transform: translateY(-3px);
  border-color: var(--brand-blue);
}

.featured-feature img {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  margin-top: 2px;
}

.featured-feature-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.featured-feature-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* PROJECTS SECTION */
.projects-section {
  padding: 4rem 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  box-shadow: var(--card-shadow);
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--brand-blue);
  box-shadow: var(--card-shadow-hover);
}

.project-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.project-icon {
  width: 42px;
  height: 42px;
  padding: 8px;
  background-color: var(--brand-blue-soft);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.55;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.tag {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-alt);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-color);
}

.project-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.project-link:hover {
  color: var(--brand-blue);
}

.project-link img {
  width: 16px;
  height: 16px;
}

/* TOOLBOX */
.toolbox-section {
  padding: 4rem 0;
}

.toolbox-group {
  margin-bottom: 2.25rem;
}

.toolbox-group-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 1.25rem;
}

.sticker-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
  cursor: default;
  position: relative;
}

.sticker-card:hover {
  transform: translateY(-4px) scale(1.03);
  border-color: var(--brand-blue);
  box-shadow: var(--card-shadow-hover);
  background-color: var(--brand-blue-soft);
}

.sticker-card img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.06));
  transition: transform var(--transition-fast);
}

.sticker-card:hover img {
  transform: scale(1.1);
}

.sticker-name {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-main);
}

/* CONTACT SECTION */
.contact-section {
  padding: 4rem 0 6rem 0;
  text-align: center;
}

.contact-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: var(--card-shadow);
}

.contact-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.contact-item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.contact-item img {
  width: 20px;
  height: 20px;
}

.contact-item:hover {
  background-color: var(--brand-blue-soft);
  border-color: var(--brand-blue);
  transform: translateY(-2px);
  color: var(--text-main);
}

/* FOOTER */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.footer-motto {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 500;
}

.footer-motto img {
  width: 16px;
  height: 16px;
  display: inline-block;
}

/* RESPONSIVE BREAKPOINTS */
@media (max-width: 868px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }

  .hero-content {
    align-items: center;
  }

  .hero-subtitle {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .featured-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 1rem;
  }

  .nav-link {
    width: 100%;
    font-size: 1.1rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .toolbox-grid {
    grid-template-columns: repeat(auto-fill, minmax(105px, 1fr));
    gap: 0.85rem;
  }

  .sticker-card {
    padding: 1rem 0.5rem;
  }

  .contact-links {
    flex-direction: column;
    width: 100%;
  }

  .contact-item {
    width: 100%;
    justify-content: center;
  }
}