/* ============================================
   HAKEEMI - PORTFOLIO STYLES
   A mind-blowing developer portfolio
   ============================================ */

/* CSS Variables - Dark Theme with Vibrant Accents */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #ec4899;
  --accent-glow: rgba(99, 102, 241, 0.4);
  
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.5);
  
  /* Spacing */
  --section-padding: clamp(80px, 12vw, 140px);
  --container-width: 1200px;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Effects */
  --blur-sm: 8px;
  --blur-md: 16px;
  --blur-lg: 32px;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Particle Canvas Background */
#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Cursor Glow Effect */
.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

body:hover .cursor-glow {
  opacity: 0.6;
}

/* Container */
.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-base);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(10, 10, 15, 0.95);
}

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

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-base);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

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

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(var(--blur-md));
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 16px 0;
  font-size: 1.1rem;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.mobile-nav a:hover {
  color: var(--accent-primary);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-base);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.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-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

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

.btn-ghost:hover {
  background: var(--bg-card);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s ease-in-out infinite;
}

.shape-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-primary);
  top: -200px;
  right: -200px;
  animation-delay: 0s;
}

.shape-2 {
  width: 500px;
  height: 500px;
  background: var(--accent-secondary);
  bottom: -150px;
  left: -150px;
  animation-delay: -7s;
}

.shape-3 {
  width: 400px;
  height: 400px;
  background: var(--accent-tertiary);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(30px, -30px) rotate(5deg); }
  50% { transform: translate(-20px, 20px) rotate(-5deg); }
  75% { transform: translate(20px, 30px) rotate(3deg); }
}

.hero-content {
  text-align: center;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  backdrop-filter: blur(var(--blur-sm));
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.greeting {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.name {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  position: relative;
}

/* Glitch effect on hover */
.glitch {
  position: relative;
}

.glitch:hover {
  animation: glitch 0.3s ease-in-out;
}

@keyframes glitch {
  0%, 100% { transform: translate(0); }
  20% { transform: translate(-2px, 2px); }
  40% { transform: translate(-2px, -2px); }
  60% { transform: translate(2px, 2px); }
  80% { transform: translate(2px, -2px); }
}

.role {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--text-primary);
}

.typed-text {
  color: var(--accent-primary);
}

.cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
  color: var(--accent-primary);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-description {
  max-width: 600px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-description strong {
  color: var(--text-primary);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent-primary), transparent);
  animation: scroll-down 2s ease-in-out infinite;
}

@keyframes scroll-down {
  0%, 100% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   SECTIONS - COMMON STYLES
   ============================================ */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-dark {
  background: var(--bg-secondary);
}

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

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

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-primary);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

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

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
}

.section-header.center .section-subtitle {
  margin: 0 auto;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
}

.image-frame {
  position: relative;
  aspect-ratio: 1;
  max-width: 350px;
}

.image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gradient-subtle);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
}

.placeholder-icon {
  font-size: 8rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.5;
}

.about-logo {
  width: 80%;
  height: auto;
  animation: float-logo 6s ease-in-out infinite;
}

@keyframes float-logo {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
}

.image-decoration {
  position: absolute;
  inset: 20px -20px -20px 20px;
  border: 2px solid var(--accent-primary);
  border-radius: 16px;
  z-index: -1;
  opacity: 0.3;
}

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

.about-text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}

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

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.highlight-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition-base);
}

.highlight-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateX(8px);
}

.highlight-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: 12px;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.highlight-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

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

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills-container {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.skills-category {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.category-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: var(--transition-base);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition-base);
}

.skill-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-4px);
}

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

.skill-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-icon svg {
  width: 40px;
  height: 40px;
}

.skill-name {
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
}

.skill-level {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.skill-level::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--level, 0%);
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width 1s ease-out;
}

.skill-card:hover .skill-level::after {
  animation: skill-fill 1s ease-out forwards;
}

@keyframes skill-fill {
  from { width: 0; }
  to { width: var(--level); }
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-base);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-primary);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.1);
}

.project-card.featured {
  grid-column: span 2;
}

.project-card.featured .project-image {
  height: 300px;
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gradient-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-muted);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-base);
}

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

.project-links {
  display: flex;
  gap: 16px;
}

.project-link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--text-primary);
  transition: var(--transition-base);
  transform: translateY(20px);
}

.project-card:hover .project-link {
  transform: translateY(0);
}

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

.project-content {
  padding: 24px;
}

.project-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.project-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 8px 0 12px;
}

.project-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-tech span {
  padding: 4px 12px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.projects-cta {
  text-align: center;
  margin-top: 48px;
}

/* ============================================
   EXPERIENCE SECTION
   ============================================ */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

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

.timeline-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 48px;
}

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

.timeline-marker {
  position: absolute;
  left: -6px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: 3px solid var(--bg-secondary);
  box-shadow: 0 0 0 3px var(--accent-primary);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  transition: var(--transition-base);
}

.timeline-item:hover .timeline-content {
  border-color: var(--accent-primary);
  transform: translateX(8px);
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 8px;
}

.timeline-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

.timeline-company {
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 16px;
}

.timeline-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.timeline-list li {
  position: relative;
  padding-left: 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.timeline-list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 16px 0;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  text-decoration: none;
  transition: var(--transition-base);
}

.contact-method:hover {
  border-color: var(--accent-primary);
  transform: translateX(8px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: 12px;
  color: var(--accent-primary);
}

.contact-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-value {
  display: block;
  color: var(--text-primary);
  font-weight: 500;
}

.contact-decoration {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-logo {
  position: absolute;
  width: 200px;
  height: auto;
  z-index: 2;
  animation: pulse-logo 4s ease-in-out infinite;
  filter: drop-shadow(0 0 30px var(--accent-glow));
}

@keyframes pulse-logo {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.05); opacity: 1; }
}

.decoration-circle {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-subtle);
  position: relative;
  animation: pulse-circle 4s ease-in-out infinite;
}

.decoration-circle::before,
.decoration-circle::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 2px solid var(--border-color);
}

.decoration-circle::before {
  inset: -30px;
  animation: rotate 20s linear infinite;
}

.decoration-circle::after {
  inset: -60px;
  animation: rotate 30s linear infinite reverse;
}

@keyframes pulse-circle {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.decoration-lines {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px),
    linear-gradient(var(--border-color) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.3;
  mask-image: radial-gradient(circle at center, black, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at center, black, transparent 70%);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer-logo {
  width: 60px;
  height: auto;
  opacity: 0.8;
  transition: var(--transition-base);
}

.footer-logo:hover {
  opacity: 1;
  transform: scale(1.1);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  transition: var(--transition-base);
}

.social-links a:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-4px);
}

.footer-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger animations */
.reveal-1 { transition-delay: 0.1s; }
.reveal-2 { transition-delay: 0.2s; }
.reveal-3 { transition-delay: 0.3s; }
.reveal-4 { transition-delay: 0.4s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .image-frame {
    max-width: 280px;
    margin: 0 auto;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-card.featured {
    grid-column: span 1;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .contact-decoration {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .btn-sm {
    display: none;
  }
  
  .hero {
    padding: 100px 0 60px;
  }
  
  .hero-stats {
    gap: 32px;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .scroll-indicator {
    display: none;
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .timeline::before {
    left: 6px;
  }
  
  .timeline-marker {
    left: 0;
  }
  
  .timeline-item {
    padding-left: 32px;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-lg {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .timeline-content {
    padding: 16px;
  }
  
  .project-tech {
    gap: 6px;
  }
  
  .project-tech span {
    font-size: 0.7rem;
    padding: 3px 8px;
  }
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-base);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.back-to-top:active {
  transform: translateY(0);
}

.back-to-top svg {
  transition: var(--transition-fast);
}

.back-to-top:hover svg {
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Selection */
::selection {
  background: var(--accent-primary);
  color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

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

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