/* ===== Variables ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  
  --text-primary: #f4f4f6;
  --text-secondary: #a0a0b0;
  --text-muted: #6b6b7b;
  
  --accent: #5865F2;
  --accent-light: #7289DA;
  --accent-dark: #4752C4;
  --accent-glow: rgba(88, 101, 242, 0.3);
  
  --gradient-primary: linear-gradient(135deg, #5865F2 0%, #7289DA 50%, #4752C4 100%);
  --gradient-text: linear-gradient(135deg, #7289DA 0%, #5865F2 50%, #b9bbbe 100%);
  
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(88, 101, 242, 0.4);
  
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  --font-main: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg-secondary);
}

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

html::-webkit-scrollbar {
  width: 8px;
}

html::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

html::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 4px;
}

html::-webkit-scrollbar-thumb:hover {
  background: var(--accent-light);
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Particles Background ===== */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(88, 101, 242, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(114, 137, 218, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 0% 80%, rgba(71, 82, 196, 0.06), transparent);
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

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

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding: 120px 24px 80px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(88, 101, 242, 0.15);
  border: 1px solid rgba(88, 101, 242, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent-light);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease-out;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

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

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent-light);
}

.btn-outline:hover {
  background: rgba(88, 101, 242, 0.1);
}

.hero-stats {
  display: flex;
  gap: 40px;
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-light);
}

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

/* Hero Visual */
.hero-visual {
  flex: 1;
  max-width: 450px;
  animation: fadeInRight 0.8s ease-out 0.3s both;
}

.code-window {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.code-title {
  margin-left: auto;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.code-content {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.8;
}

.code-keyword { color: #c792ea; }
.code-prop { color: #82aaff; }
.code-string { color: #c3e88d; }
.code-number { color: #f78c6c; }

/* ===== Section Styling ===== */
section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

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

.section-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(88, 101, 242, 0.15);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 800;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}

.about-text {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.about-text strong {
  color: var(--accent-light);
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.feature:hover {
  border-color: var(--border-hover);
}

.feature-icon {
  font-size: 1.3rem;
}

.about-image {
  position: relative;
}

.avatar {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent);
}

.avatar-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: var(--accent);
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.2;
  z-index: -1;
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 400px 1fr;
}

.project-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.project-card.featured .project-image {
  height: 100%;
  min-height: 280px;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-image .hover-img,
.project-image .hover-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  transition: opacity var(--transition), visibility var(--transition);
}

.project-image .hover-video {
  opacity: 0;
  visibility: hidden;
}

.project-image:hover .hover-img {
  opacity: 0;
  visibility: hidden;
}

.project-image:hover .hover-video {
  opacity: 1;
  visibility: visible;
}

/* Fallback display toggling to ensure hover works in all browsers */
.project-image .hover-img { display: block; }
.project-image .hover-video { display: none; }
.project-image:hover .hover-img { display: none !important; }
.project-image:hover .hover-video { display: block !important; }

.project-icon {
  font-size: 4rem;
}

.project-content {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-type {
  font-size: 0.8rem;
  color: var(--accent-light);
  margin-bottom: 8px;
}

.project-content h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.project-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex: 1;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-light);
  font-weight: 600;
  transition: var(--transition);
}

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

.project-link svg {
  transition: transform var(--transition);
}

.project-link:hover svg {
  transform: translate(4px, -4px);
}

/* ===== Download Center ===== */
.downloads {
  background: var(--bg-secondary);
}

.download-page {
  padding-top: 140px;
  min-height: 100vh;
}

.download-back {
  margin-top: 48px;
  text-align: center;
}

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.download-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: var(--transition);
}

.download-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.download-icon {
  width: 56px;
  height: 56px;
  min-width: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--accent-light);
}

.download-content {
  flex: 1;
  min-width: 0;
}

.download-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.download-badge {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: rgba(88, 101, 242, 0.2);
  color: var(--accent-light);
  border-radius: 100px;
}

.download-version {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.download-content h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.download-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.changelog-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent-light);
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.changelog-btn:hover {
  background: rgba(88, 101, 242, 0.1);
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--gradient-primary);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

@media (max-width: 600px) {
  .download-card {
    flex-direction: column;
  }

  .download-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    font-size: 1.2rem;
  }
}

/* ===== Changelog Modal ===== */
.changelog-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.changelog-modal.open {
  opacity: 1;
  visibility: visible;
}

.changelog-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.changelog-popup {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 520px;
  width: 100%;
  max-height: 80vh;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  transition: var(--transition);
}

.changelog-modal.open .changelog-popup {
  transform: scale(1);
}

.changelog-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.changelog-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.changelog-header {
  padding: 24px 56px 16px 24px;
  border-bottom: 1px solid var(--border);
}

.changelog-header h3 {
  font-size: 1.25rem;
}

.changelog-body {
  padding: 24px;
  overflow-y: auto;
  max-height: calc(80vh - 100px);
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg-secondary);
}

.changelog-body::-webkit-scrollbar {
  width: 8px;
}

.changelog-body::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.changelog-body::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 4px;
}

.changelog-body::-webkit-scrollbar-thumb:hover {
  background: var(--accent-light);
}

.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.changelog-version .version-tag {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(88, 101, 242, 0.2);
  color: var(--accent-light);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.changelog-version ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.changelog-version li {
  margin-bottom: 6px;
}

.changelog-github {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.changelog-source {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-light);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.changelog-source:hover {
  text-decoration: underline;
}

.changelog-markdown {
  color: var(--text-secondary);
  line-height: 1.7;
}

.changelog-markdown h1,
.changelog-markdown h2,
.changelog-markdown h3 {
  color: var(--text-primary);
  margin: 16px 0 8px;
  font-size: 1rem;
}

.changelog-markdown ul {
  margin: 8px 0;
  padding-left: 20px;
}

.changelog-markdown li {
  margin-bottom: 4px;
}

.changelog-markdown a {
  color: var(--accent-light);
}

.changelog-markdown a:hover {
  text-decoration: underline;
}

.changelog-markdown strong {
  color: var(--text-primary);
}

.changelog-loading {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

.changelog-loading i {
  margin-right: 10px;
}

.changelog-error {
  text-align: center;
  padding: 24px;
  color: var(--text-secondary);
}

.changelog-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent-light);
}

.changelog-link:hover {
  text-decoration: underline;
}

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

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.skill-category {
  background: var(--bg-card);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.skill-category h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tags span {
  padding: 8px 14px;
  background: rgba(88, 101, 242, 0.1);
  border: 1px solid rgba(88, 101, 242, 0.2);
  border-radius: 100px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-tags span:hover {
  background: rgba(88, 101, 242, 0.2);
  border-color: var(--accent);
}

/* ===== Testimonials ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--border-hover);
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.testimonial-card p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.testimonial-author strong {
  display: block;
  margin-bottom: 2px;
}

.testimonial-author span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Contact ===== */
.contact {
  background: var(--bg-secondary);
}

.contact-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.contact-text {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 36px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.contact-icon {
  font-size: 1.5rem;
}

/* ===== Footer ===== */
.footer {
  padding: 24px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-visual {
    max-width: 100%;
  }
  
  .project-card.featured {
    grid-template-columns: 1fr;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-image {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  section {
    padding: 60px 0;
  }
}