/* =========================================
   DESIGN SYSTEM TOKENS
   ========================================= */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #13131c;
  --bg-card: rgba(255, 255, 255, 0.03);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-color: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.2);
  --border-color: rgba(255, 255, 255, 0.1);
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   RESET & FUNDAMENTALS
   ========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-primary);
}

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

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

/* =========================================
   UTILITIES & LAYOUT
   ========================================= */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.section {
  padding: 100px 0;
  position: relative;
}

.alt-bg {
  background-color: var(--bg-secondary);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60%;
  height: 4px;
  background: var(--accent-color);
  border-radius: 2px;
}

.text-center .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

.glass {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
}

/* =========================================
   NAVIGATION BAR
   ========================================= */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.dot {
  color: var(--accent-color);
}

.menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
  transition: var(--transition);
}

.menu-btn svg {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

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

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

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 180px 0 100px;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
  border-radius: 50%;
  filter: blur(50px);
}

.hero-content {
  max-width: 800px;
  padding: 0 2rem;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  letter-spacing: -1px;
}

.wave {
  display: inline-block;
  animation: wave 2.5s infinite;
  transform-origin: 70% 70%;
}

@keyframes wave {
  0% { transform: rotate(0deg); }
  10% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  30% { transform: rotate(14deg); }
  40% { transform: rotate(-4deg); }
  50% { transform: rotate(10deg); }
  60% { transform: rotate(0deg); }
  100% { transform: rotate(0deg); }
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 30px;
  font-weight: 600;
  font-family: var(--font-heading);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--text-primary);
}

.btn-primary:hover {
  background: transparent;
  color: var(--text-primary);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  margin-left: 1rem;
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* =========================================
   ABOUT SECTION
   ========================================= */
.about-card {
  padding: 3rem;
  max-width: 800px;
}

.about-card p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-card strong {
  color: var(--accent-color);
  font-weight: 500;
}

/* =========================================
   PROJECTS SECTION
   ========================================= */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.project-card {
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.05) 0%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.project-card:hover::before {
  opacity: 1;
}

.card-content {
  padding: 2.5rem;
  position: relative;
  z-index: 2;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  color: var(--accent-color);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
}

.project-link:hover {
  gap: 0.8rem;
  border-bottom-color: var(--accent-color);
}

.link-icon {
  width: 18px;
  height: 18px;
}

.project-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.project-desc {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.card-content > *:last-child {
  margin-bottom: 0 !important;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.project-tech span {
  font-size: 0.8rem;
  color: var(--accent-color);
  background: rgba(56, 189, 248, 0.1);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-family: var(--font-heading);
}

/* =========================================
   SKILLS SECTION
   ========================================= */
.skills-glass-container {
  max-width: 1000px;
  margin: 0 auto;
  overflow: hidden;
}

.skills-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  padding: 2.5rem;
  gap: 3rem;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
  align-items: flex-start;
}

.skills-row:last-child {
  border-bottom: none;
}

.skills-row:hover {
  background: rgba(255, 255, 255, 0.02);
  border-left: 4px solid var(--accent-color);
  padding-left: calc(2.5rem - 4px);
}

.skills-category {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-color); /* Restoring blue color */
  text-transform: uppercase;
  letter-spacing: 1px;
  padding-top: 0.5rem;
}

.skills-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-start;
}

.skill-tag {
  padding: 0.6rem 1.2rem;
  background: transparent !important;
  border: 1px solid var(--border-color);
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
  cursor: default;
}

.skill-tag:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: transparent !important;
  transform: translateY(-3px);
}

/* =========================================
   CONTACT SECTION
   ========================================= */
.contact-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

.contact-info {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.1rem;
  font-weight: 500;
  transition: var(--transition);
  color: var(--text-secondary);
}

.contact-link:hover {
  color: var(--text-primary);
}

.social-icon {
  width: 24px;
  height: 24px;
  fill: var(--text-primary);
  transition: var(--transition);
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* =========================================
   ANIMATIONS
   ========================================= */
.fade-in {
  animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */
@media (max-width: 768px) {
  .hero-title { font-size: 3rem; }
  .hero { padding: 140px 0 50px; }
  .section { padding: 50px 0; }
  .section-title { font-size: 2rem; margin-bottom: 2rem; }
  .hero-buttons { display: flex; flex-direction: column; gap: 1rem; }
  .btn-secondary { margin-left: 0; }
  .about-card { padding: 2rem; }
  .contact-info { flex-direction: column; gap: 1.5rem; align-items: center; }
  
  .menu-btn { display: block; }
  
  .nav-content {
    justify-content: space-between;
    padding: 1.2rem 1.5rem;
  }
  
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    padding: 3rem 2rem;
    gap: 2rem;
    border-bottom: 1px solid var(--border-color);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.4s ease;
  }
  
  .nav-links.active {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }
  
  .skills-row {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1.5rem;
  }
  
  .skills-category {
    width: 100%;
    margin-bottom: 0;
    padding-top: 0;
    font-size: 0.85rem;
    color: var(--accent-color);
    letter-spacing: 2px;
  }
  
  .skill-tag {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    background: transparent !important;
  }

  .skills-row:hover {
    background: rgba(255, 255, 255, 0.04);
    border-left: 4px solid var(--accent-color);
  }
}