/* ==========================================================================
   CSS Variables & Tokens
   ========================================================================== */
:root {
  /* Color Palette */
  --bg-color: #0d0c15; /* Deep cosmos black */
  --bg-gradient: linear-gradient(135deg, #0d0c15 0%, #151329 100%);
  --accent-blue: #3b82f6; /* Electric Blue */
  --accent-cyan: #06b6d4; /* Neon Cyan */
  --accent-purple: #8b5cf6; /* Violet */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.07);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Particle Canvas */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: auto; /* Allow interactions */
}

/* Container Utility */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  background: linear-gradient(90deg, var(--text-main), var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: shine 5s linear infinite;
}

p {
  color: var(--text-muted);
}

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

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes shine {
  to {
    background-position: 200% center;
  }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.4); }
  70% { box-shadow: 0 0 20px 10px rgba(6, 182, 212, 0); }
  100% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
}

/* Scroll Reveal Classes */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease-out;
}

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

/* ==========================================================================
   Navigation (Frosted Glass)
   ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.3s ease;
}

header.scrolled {
  background: rgba(13, 12, 21, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 15px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo span {
  color: var(--accent-cyan);
}

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

.nav-links li a {
  font-size: 1rem;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-links li a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--accent-cyan);
  transition: width 0.3s ease;
}

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

.hire-me-btn {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  padding: 8px 24px;
  border-radius: 30px;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
}

.hire-me-btn:hover {
  background: var(--accent-cyan);
  color: #000;
  box-shadow: 0 0 15px var(--accent-cyan);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 800px;
  z-index: 10;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.hero h1 span {
  display: block;
  font-size: 5rem;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.dynamic-text {
  font-size: 1.5rem;
  color: var(--accent-blue);
  margin-bottom: 2rem;
  font-family: var(--font-heading);
  min-height: 2rem;
}

.typewriter::after {
  content: '|';
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.btn-primary {
  display: inline-block;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  color: #fff;
  padding: 12px 32px;
  border-radius: 30px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--text-main);
  padding: 12px 32px;
  border-radius: 30px;
  font-weight: 600;
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: 1rem;
}

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: var(--accent-purple);
}

/* ==========================================================================
   About Me Section
   ========================================================================== */
.about {
  padding: var(--section-padding);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  position: relative;
}

.avatar-frame {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  margin: 0 auto;
  border: 1px solid var(--glass-border);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
}

.avatar-frame::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(transparent, transparent, transparent, var(--accent-purple));
  animation: rotate 4s linear infinite;
  z-index: 1;
}

.avatar-frame::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--bg-color);
  border-radius: 17px;
  z-index: 2;
}

.avatar-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 3;
  border-radius: 17px;
  padding: 5px;
}

@keyframes rotate {
  100% { transform: rotate(360deg); }
}

.about-text h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--accent-cyan);
}

.about-text p {
  margin-bottom: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 1.5rem;
  border-radius: 15px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills {
  padding: var(--section-padding);
  position: relative;
}

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

.skill-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.skill-card:hover {
  box-shadow: var(--glass-shadow);
  border-color: rgba(255, 255, 255, 0.15);
}

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

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.skill-name {
  font-weight: 600;
  font-size: 1.1rem;
}

.skill-percent {
  color: var(--accent-cyan);
  font-weight: 700;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 4px;
  width: 0; /* Animated via JS */
  transition: width 1.5s cubic-bezier(0.1, 0.5, 0.1, 1);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services {
  padding: var(--section-padding);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.4s ease;
  transform-style: preserve-3d;
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-blue);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

.service-icon {
  font-size: 3rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* ==========================================================================
   Portfolio Section
   ========================================================================== */
.portfolio {
  padding: var(--section-padding);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  padding: 8px 24px;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn.active, .filter-btn:hover {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  aspect-ratio: 16/9;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  background-color: #1a1a2e; /* Fallback */
}

/* Placeholder styles if images are missing */
.portfolio-item .placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(45deg, #1a1a2e, #16213e);
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.1);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 12, 21, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 2rem;
  text-align: center;
}

.portfolio-item:hover img {
  transform: scale(1.1);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay h3 {
  margin-bottom: 0.5rem;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.portfolio-overlay p {
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
  transform: translateY(20px);
  transition: transform 0.3s ease 0.1s;
}

.portfolio-item:hover .portfolio-overlay h3,
.portfolio-item:hover .portfolio-overlay p {
  transform: translateY(0);
}

.portfolio-link {
  display: inline-block;
  width: 50px;
  height: 50px;
  background: var(--text-main);
  color: var(--bg-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transform: scale(0);
  transition: transform 0.3s ease 0.2s, background 0.3s ease;
}

.portfolio-item:hover .portfolio-link {
  transform: scale(1);
}

.portfolio-link:hover {
  background: var(--accent-cyan);
}

/* ==========================================================================
   Testimonials Section
   ========================================================================== */
.testimonials {
  padding: var(--section-padding);
  position: relative;
}

.testimonial-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.testimonial-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 3rem;
  text-align: center;
  backdrop-filter: blur(10px);
  display: none;
  animation: fadeEffect 0.5s;
}

.testimonial-card.active {
  display: block;
}

@keyframes fadeEffect {
  from {opacity: 0; transform: scale(0.95);}
  to {opacity: 1; transform: scale(1);}
}

.quote-icon {
  font-size: 3rem;
  color: var(--accent-purple);
  margin-bottom: 1.5rem;
  opacity: 0.5;
}

.testimonial-text {
  font-size: 1.2rem;
  font-style: italic;
  margin-bottom: 2rem;
}

.client-info h4 {
  color: var(--accent-cyan);
  margin-bottom: 0.2rem;
}

.client-info p {
  font-size: 0.9rem;
}

.testi-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.testi-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--glass-border);
  cursor: pointer;
  transition: all 0.3s ease;
}

.testi-dot.active {
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact {
  padding: var(--section-padding);
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  padding: 4rem;
  backdrop-filter: blur(10px);
}

.contact-info h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.contact-info p {
  margin-bottom: 2rem;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.info-icon {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.2rem;
}

.form-group {
  position: relative;
  margin-bottom: 2rem;
}

.form-control {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 0;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s ease;
}

.form-control:focus {
  border-bottom-color: var(--accent-cyan);
}

.form-label {
  position: absolute;
  top: 10px;
  left: 0;
  color: var(--text-muted);
  pointer-events: none;
  transition: all 0.3s ease;
}

.form-control:focus ~ .form-label,
.form-control:valid ~ .form-label {
  top: -20px;
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.submit-btn {
  width: 100%;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  color: #fff;
  border: none;
  padding: 15px;
  border-radius: 10px;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(139, 92, 246, 0.4);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--glass-border);
  padding: 3rem 0 1rem;
  text-align: center;
}

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

.social-icon {
  width: 45px;
  height: 45px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.social-icon:hover {
  background: var(--accent-cyan);
  color: #000;
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(6, 182, 212, 0.4);
}

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

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
  .about-grid, .contact-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .contact-container {
    padding: 2rem;
  }
  
  h2 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(13, 12, 21, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: left 0.3s ease;
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hire-me-btn {
    display: none;
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  .hero h1 span {
    font-size: 3.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
}