/* ===== Custom Properties / Theme ===== */
:root {
  --bg-primary: #0b0f1a;
  --bg-secondary: #111827;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --accent-secondary: #8b5cf6;
  --gradient-accent: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-hero: linear-gradient(135deg, #0b0f1a 0%, #1e1b4b 50%, #0b0f1a 100%);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --navbar-bg: rgba(11, 15, 26, 0.8);
  --navbar-bg-scrolled: rgba(11, 15, 26, 0.95);
  --navbar-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ===== Light Theme ===== */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(0, 0, 0, 0.03);
  --bg-glass: rgba(0, 0, 0, 0.04);
  --bg-glass-hover: rgba(0, 0, 0, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #2563eb;
  --accent-glow: rgba(37, 99, 235, 0.2);
  --accent-secondary: #7c3aed;
  --gradient-accent: linear-gradient(135deg, #2563eb, #7c3aed);
  --gradient-hero: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 50%, #f8fafc 100%);
  --border-subtle: rgba(0, 0, 0, 0.08);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 60px rgba(37, 99, 235, 0.1);
  --navbar-bg: rgba(248, 250, 252, 0.85);
  --navbar-bg-scrolled: rgba(248, 250, 252, 0.97);
  --navbar-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

/* ===== Theme Toggle Button ===== */
.theme-toggle {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.15rem;
  line-height: 1;
  padding: 0;
  margin-left: 8px;
}

.theme-toggle:hover {
  background: var(--bg-glass-hover);
  transform: scale(1.1);
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 2rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.navbar.scrolled {
  background: var(--navbar-bg-scrolled);
  box-shadow: var(--navbar-shadow);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Nav Controls (lang + theme) */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  background: var(--bg-glass);
  border-radius: var(--radius-full);
  padding: 3px;
  border: 1px solid var(--border-subtle);
}

.lang-toggle button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.lang-toggle button.active {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.lang-toggle button:hover:not(.active) {
  color: var(--text-primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 2rem 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(80px);
  animation: float 8s ease-in-out infinite;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 10%;
  right: 15%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(80px);
  animation: float 10s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(30px, -30px);
  }
}

.hero-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 80px;
  max-width: 1100px;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-text {
  max-width: 560px;
}

.hero-greeting {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.hero-title .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
  background: var(--bg-glass);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

/* Hero Image */
.hero-image-wrapper {
  position: relative;
}

.hero-image-wrapper::before {
  content: '';
  position: absolute;
  inset: -8px;
  background: var(--gradient-accent);
  border-radius: 50%;
  opacity: 0.5;
  filter: blur(20px);
  animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {

  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }

  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

.hero-image-wrapper img {
  width: 300px;
  height: 300px;
  object-fit: cover;
  border-radius: 50%;
  position: relative;
  z-index: 1;
  border: 3px solid rgba(255, 255, 255, 0.1);
}

/* ===== Sections Common ===== */
section {
  padding: 100px 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== About Section ===== */
#about {
  background: var(--bg-secondary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-text {
  font-size: 1.1rem;
  line-height: 1.9;
  color: var(--text-secondary);
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.highlight-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.highlight-card:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.highlight-number {
  font-size: 2.25rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.highlight-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ===== Skills Section ===== */
#skills {
  background: var(--bg-primary);
}

.skills-carousel {
  overflow: hidden;
  width: 100%;
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  padding: 1rem 0;
}

.skills-track {
  display: flex;
  gap: 2rem;
  animation: scroll-marquee 40s linear infinite;
  width: max-content;
}

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

@keyframes scroll-marquee {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  min-width: 100px;
  padding: 1.25rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: default;
}

.skill-item:hover {
  background: var(--bg-glass-hover);
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.skill-item img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

/* Invert GitHub and monochrome icons in dark mode */
:root .skill-item img[alt="GitHub"],
:root .skill-item .icon-mono {
  filter: invert(1) brightness(2);
}

[data-theme="light"] .skill-item img[alt="GitHub"],
[data-theme="light"] .skill-item .icon-mono {
  filter: none;
}

.skill-item span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.skill-text-icon {
  font-size: 2.5rem;
  line-height: 48px;
  text-align: center;
  width: 48px;
  height: 48px;
}

/* ===== Projects Section ===== */
#projects {
  background: var(--bg-secondary);
}

/* Featured Project */
.project-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 1100px;
  margin: 0 auto 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.project-featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary), var(--accent));
  z-index: 1;
}

.project-featured:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.project-featured-image {
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

.project-featured-image .project-image-placeholder {
  height: 100%;
  min-height: 320px;
}

.project-featured-image .project-image {
  height: 100%;
}

.project-featured-image .project-image img {
  height: 100%;
}

.project-featured-body {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-featured-body h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-featured-body p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.tag-featured {
  background: var(--gradient-accent) !important;
  color: white !important;
  -webkit-text-fill-color: white !important;
  font-size: 0.8rem;
  padding: 6px 14px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

/* Project Slideshow */
.project-slideshow {
  position: relative;
  width: 100%;
  height: 450px;
  overflow: hidden;
}

.project-featured-image .project-slideshow {
  height: 100%;
  min-height: 480px;
}

.project-slideshow img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--bg-card);
  opacity: 0;
  transition: opacity 0.6s ease;
}

.project-slideshow img.active {
  opacity: 1;
}

.project-card:hover .project-slideshow img.active,
.project-featured:hover .project-slideshow img.active {
  transform: scale(1.03);
  transition: opacity 0.6s ease, transform 4s ease;
}

.slideshow-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gradient-accent);
  opacity: 0.15;
}

/* Slideshow dots */
.slideshow-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}

.slideshow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: all 0.3s ease;
  cursor: pointer;
}

.slideshow-dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  transform: scale(1.2);
}

.project-body {
  padding: 2rem;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.project-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.project-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.project-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-techs span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

/* ===== Contact Section ===== */
#contact {
  background: var(--bg-primary);
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

/* Publications */
.publications-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.publication-card {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
  position: relative;
}

.publication-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--shadow-card);
  border-color: var(--accent);
}

.publication-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.publication-icon svg {
  width: 24px;
  height: 24px;
  stroke: white;
}

.publication-content {
  flex: 1;
}

.publication-type {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
  display: block;
}

.publication-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.publication-authors {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  font-style: italic;
  line-height: 1.5;
}

.publication-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.publication-venue {
  font-weight: 600;
  color: var(--text-primary);
}

.publication-link-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  opacity: 0.3;
  transition: var(--transition);
}

.publication-card:hover .publication-link-icon {
  opacity: 1;
  color: var(--accent);
}

.publication-link-icon svg {
  width: 100%;
  height: 100%;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.contact-card:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent);
}

.contact-card svg {
  width: 24px;
  height: 24px;
  fill: var(--accent);
  flex-shrink: 0;
}

.contact-card span {
  font-weight: 600;
  font-size: 0.9rem;
}

.contact-note {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  padding: 2rem;
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Experience Timeline ===== */
#experience {
  background: var(--bg-primary);
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-subtle);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-content {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  transition: var(--transition);
}

.timeline-content:hover {
  background: var(--bg-glass-hover);
  transform: translateX(6px);
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0.25rem 0 0.15rem;
}

.timeline-role {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.5rem !important;
}

.timeline-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Scroll Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1.25rem;
  }

  .nav-controls {
    margin-right: 3.5rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--navbar-bg-scrolled);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 100px 2rem 2rem;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 1px solid var(--border-subtle);
    z-index: 999;
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-links {
    flex-direction: column;
    gap: 1.5rem;
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  .project-featured {
    grid-template-columns: 1fr;
  }

  .project-featured-image {
    min-height: 200px;
  }

  .project-featured-image .project-image-placeholder {
    min-height: 200px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .hero-container {
    flex-direction: column-reverse;
    gap: 3rem;
    text-align: center;
  }

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

  .hero-image-wrapper img {
    width: 220px;
    height: 220px;
  }

  .about-highlights {
    grid-template-columns: 1fr;
    gap: 1rem;
  }


  .projects-grid {
    grid-template-columns: 1fr;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  section {
    padding: 60px 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 1rem 60px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-description {
    font-size: 1rem;
  }


  .btn {
    padding: 10px 22px;
    font-size: 0.9rem;
  }
}