/* =================================================
   Ahmed Hekal – COMPLETE MAIN.CSS
   FULLY FUNCTIONAL • BUG-FREE • PRODUCTION READY
   ================================================= */


/* =================================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ================================================= */

:root {
  /* Primary Colors */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #0968E5;  /* Brand Primary */
--primary-600: #0754b8;
--primary-700: #091970;  /* Brand Dark Blue */
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;
  
  /* Accent Colors */
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  
  /* Neutral Colors */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Semantic Colors */
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Typography */
--font-sans: 'Comfortaa', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;align-content
--font-mono: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  
  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
--shadow-glow: 0 0 40px rgba(9, 104, 229, 0.15);
--shadow-glow-lg: 0 0 60px rgba(9, 104, 229, 0.2);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}


/* =================================================
   RESET & BASE
   ================================================= */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-700);
  line-height: 1.6;
  background: linear-gradient(180deg, var(--gray-50) 0%, #ffffff 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

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

::selection {
  background: var(--primary-200);
  color: var(--primary-900);
}

:focus-visible {
  outline: 3px solid var(--primary-400);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

:focus:not(:focus-visible) {
  outline: none;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}


/* =================================================
   TYPOGRAPHY
   ================================================= */

h1, h2, h3, h4, h5, h6 {
  color: var(--gray-900);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: var(--space-5);
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-700) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-5);
  line-height: 1.75;
  color: var(--gray-600);
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-700);
}

/* Comfortaa Font Weights - Brand Guidelines */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Comfortaa', sans-serif;
  font-weight: 700; /* Comfortaa Bold */
}

body, p, a, span, li {
  font-family: 'Comfortaa', sans-serif;
  font-weight: 300; /* Comfortaa Light */
}

/* =================================================
   HEADER
   ================================================= */

.site-header {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--space-3) 0;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-slow);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-lg);
}

.site-header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-logo a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--gray-900);
  font-weight: 800;
  font-size: 1.25rem;
  transition: transform var(--transition-base);
}

.site-logo img {
  max-height: 50px;
  width: auto;
  height: auto;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-nav a {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--gray-600);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--primary-600);
  background: var(--primary-50);
}


/* =================================================
   ABOUT PAGE - HERO SECTION
   ================================================= */

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0;
  pointer-events: none;
}

.about-hero-pro {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 50%, #f8fafc 100%);
}

.about-hero-grid-pro {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

.about-hero-content-pro {
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-label-pro {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: #059669;
  margin-bottom: var(--space-6);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.1);
  }
}

.glitch-text {
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 900;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-700) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.typing-wrapper {
  min-height: 60px;
  margin-bottom: var(--space-6);
}

.typing-text {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--primary-600);
  position: relative;
  display: inline-block;
}

.typing-text::after {
  content: '|';
  position: absolute;
  right: -10px;
  animation: blink 1s infinite;
}

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

.hero-description-pro {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--gray-600);
  margin-bottom: var(--space-10);
  max-width: 600px;
}

.hero-stats-pro {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.stat-item-pro {
  text-align: center;
}

.stat-circle {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-4);
}

.stat-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.stat-bg {
  fill: none;
  stroke: var(--gray-100);
  stroke-width: 8;
}

.stat-progress {
  fill: none;
  stroke: url(#gradient);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 283;
  transition: stroke-dashoffset 2s ease-in-out;
}

.stat-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.stat-number-pro {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-600), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-plus {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-600);
}

.stat-label-pro {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 600;
}

.hero-buttons-pro {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.btn-pro {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary-pro {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary-pro:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.45);
}

.btn-secondary-pro {
  background: transparent;
  color: var(--primary-600);
  border: 2px solid var(--primary-200);
}

.btn-secondary-pro:hover {
  background: var(--primary-50);
  border-color: var(--primary-300);
  transform: translateY(-3px);
}

.btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.about-hero-image-pro {
  position: relative;
}

.image-wrapper-pro {
  position: relative;
  z-index: 1;
}

.image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.3), transparent 70%);
  filter: blur(60px);
  z-index: -1;
  animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.floating-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  font-weight: 600;
  animation: float 6s ease-in-out infinite;
  z-index: 2;
}

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

.floating-card.card-1 {
  top: 10%;
  right: -10%;
  animation-delay: 0s;
}

.floating-card.card-2 {
  bottom: 15%;
  left: -5%;
  animation-delay: 3s;
}

.floating-card svg {
  color: var(--primary-600);
}

.profile-image-pro {
  width: 100%;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  transition: transform var(--transition-slow);
}

.profile-image-pro:hover {
  transform: scale(1.02) rotate(1deg);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  cursor: pointer;
  z-index: 10;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -10px); }
}

.mouse {
  width: 26px;
  height: 40px;
  border: 2px solid var(--gray-400);
  border-radius: 15px;
  margin: 0 auto var(--space-2);
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--gray-400);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 20px; }
}

.scroll-indicator span {
  font-size: 0.75rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}


/* =================================================
   ABOUT SUMMARY SECTION
   ================================================= */

.about-summary-pro {
  padding: var(--space-24) 0;
  background: #fff;
}

.summary-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-600);
  background: var(--primary-50);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.highlight-text {
  background: linear-gradient(135deg, var(--primary-600), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.quick-facts {
  margin-top: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.fact-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-500);
}

.fact-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.fact-item strong {
  display: block;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.fact-item p {
  margin: 0;
  color: var(--gray-600);
  font-size: 0.9375rem;
}

.tech-orbit {
  position: relative;
  width: 400px;
  height: 400px;
  margin: 0 auto;
}

.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--primary-600), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  z-index: 2;
  box-shadow: var(--shadow-xl);
}

.orbit-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 2px dashed var(--gray-200);
  border-radius: 50%;
}

.ring-1 {
  width: 200px;
  height: 200px;
  animation: rotate 20s linear infinite;
}

.ring-2 {
  width: 300px;
  height: 300px;
  animation: rotate 30s linear infinite reverse;
}

@keyframes rotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.orbit-item {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  margin: -40px 0 0 -40px;
  background: #fff;
  border: 2px solid var(--primary-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary-700);
  box-shadow: var(--shadow-md);
  transform-origin: 40px 40px;
}

.ring-1 .orbit-item {
  transform: rotate(calc(var(--i) * 120deg)) translateX(100px) rotate(calc(var(--i) * -120deg));
}

.ring-2 .orbit-item {
  transform: rotate(calc(var(--i) * 90deg)) translateX(150px) rotate(calc(var(--i) * -90deg));
}


/* =================================================
   EXPERTISE SECTION
   ================================================= */

.expertise-section-pro {
  padding: var(--space-24) 0;
  background: linear-gradient(180deg, #fff 0%, var(--gray-50) 100%);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--gray-500);
}

.expertise-grid-pro {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: var(--space-8);
}

.expertise-card-pro {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.expertise-card-pro::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--accent-purple));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.expertise-card-pro:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
  border-color: transparent;
}

.expertise-card-pro:hover::before {
  opacity: 1;
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.expertise-card-pro:hover .card-glow {
  opacity: 1;
}

.card-icon-pro {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  color: var(--primary-600);
  transition: all var(--transition-slow);
}

.expertise-card-pro:hover .card-icon-pro {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
  color: #fff;
}

.expertise-card-pro h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-4);
}

.expertise-card-pro > p {
  color: var(--gray-500);
  margin-bottom: var(--space-8);
}

.skill-bars {
  margin-bottom: var(--space-6);
}

.skill-bar {
  margin-bottom: var(--space-4);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  font-size: 0.875rem;
}

.skill-info span:first-child {
  font-weight: 600;
  color: var(--gray-700);
}

.skill-info span:last-child {
  color: var(--primary-600);
  font-weight: 700;
}

.skill-progress {
  height: 8px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-500), var(--accent-purple));
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1.5s ease-in-out;
}

.card-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.card-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: 0.9375rem;
  color: var(--gray-600);
}

.card-features svg {
  color: var(--success);
  flex-shrink: 0;
}


/* =================================================
   TIMELINE SECTION
   ================================================= */

.timeline-section-pro {
  padding: var(--space-24) 0;
  background: #fff;
}

.timeline-pro {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

.timeline-pro::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-500), var(--accent-purple));
}

.timeline-item-pro {
  position: relative;
  margin-bottom: var(--space-12);
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease-out;
}

.timeline-item-pro.animate-in {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  left: -28px;
  top: 24px;
  width: 16px;
  height: 16px;
  background: #fff;
  border: 4px solid var(--primary-500);
  border-radius: 50%;
  z-index: 2;
  transition: all var(--transition-base);
}

.timeline-dot.pulse {
  animation: dot-pulse 2s infinite;
}

@keyframes dot-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
  }
}

.timeline-card {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-slow);
}

.timeline-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.timeline-date-pro {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary-600);
  background: var(--primary-50);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.timeline-content-pro {
  position: relative;
}

.company-logo {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--primary-600);
  margin-bottom: var(--space-4);
  font-size: 1.25rem;
}

.timeline-content-pro h3 {
  font-size: 1.375rem;
  margin-bottom: var(--space-2);
}

.timeline-content-pro h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-500);
  margin-bottom: var(--space-4);
}

.timeline-content-pro > p {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
}

.achievement-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(251, 191, 36, 0.1));
  color: #d97706;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-6);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.achievement-badge svg {
  color: #f59e0b;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.tech-chip {
  padding: var(--space-2) var(--space-4);
  background: var(--primary-50);
  color: var(--primary-700);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--primary-100);
  transition: all var(--transition-base);
  cursor: default;
}

.tech-chip:hover {
  transform: translateY(-2px);
  background: var(--primary-100);
}

.timeline-details {
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline-details li {
  padding: var(--space-3) 0 var(--space-3) var(--space-6);
  position: relative;
  color: var(--gray-600);
  font-size: 0.9375rem;
}

.timeline-details li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--primary-500);
  font-weight: 700;
}


/* =================================================
   CERTIFICATIONS SECTION
   ================================================= */

.certifications-pro {
  padding: var(--space-24) 0;
  background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.cert-card-pro {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-slow);
}

.cert-card-pro:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-100);
}

.cert-badge {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-6);
  background: linear-gradient(135deg, var(--primary-50), var(--gray-50));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.6s ease;
  overflow: hidden;
}

.cert-badge img {
  width: 70%;
  height: 70%;
  object-fit: contain;
}

.cert-icon {
  font-size: 3rem;
}

.cert-card-pro h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-4);
}

.cert-card-pro p {
  color: var(--gray-500);
  font-size: 0.9375rem;
  margin-bottom: var(--space-5);
}

.cert-verify {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--success);
  font-weight: 600;
}

.additional-creds {
  text-align: center;
  padding: var(--space-10);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
}

.additional-creds h4 {
  margin-bottom: var(--space-6);
  color: var(--gray-700);
}

.additional-creds-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}


/* =================================================
   TECH STACK SECTION
   ================================================= */

.tech-stack-section {
  padding: var(--space-24) 0;
  background: #fff;
}

.tech-categories {
  display: grid;
  gap: var(--space-6);
}

.tech-category-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.tech-category-card:hover {
  background: #fff;
  box-shadow: var(--shadow-md);
}

.tech-category-card h4 {
  font-size: 1.125rem;
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--gray-800);
}

.tech-chips-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}


/* =================================================
   TESTIMONIALS SECTION
   ================================================= */

.testimonials-section {
  padding: var(--space-24) 0;
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  position: relative;
  overflow: hidden;
}

.testimonials-overlay {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.8;
}

.section-label-light {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
}

.testimonials-title {
  color: #fff;
  text-align: center;
}

.highlight-white {
  background: linear-gradient(135deg, #fff, var(--primary-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.testimonials-subtitle {
  color: var(--gray-400);
  text-align: center;
  font-size: 1.125rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
  position: relative;
  z-index: 1;
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-slow);
}

.testimonial-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
}

.testimonial-text {
  color: var(--gray-300);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--space-6);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.author-avatar {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
}

.author-info strong {
  display: block;
  color: #fff;
  font-size: 1rem;
  margin-bottom: var(--space-1);
}

.author-info small {
  color: var(--gray-400);
  font-size: 0.875rem;
}


/* =================================================
   CTA SECTION
   ================================================= */

.cta-section-pro {
  padding: var(--space-24) 0;
  position: relative;
  overflow: hidden;
  min-height: 500px;
  display: flex;
  align-items: center;
}

.cta-background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cta-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--accent-purple) 50%, var(--primary-700) 100%);
}

.cta-pattern {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content-pro {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-content-pro h2 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-6);
}

.cta-content-pro p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: var(--space-10);
}

.cta-buttons-pro {
  display: flex;
  gap: var(--space-5);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-cta-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-10);
  background: #fff;
  color: var(--primary-700);
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-base);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.btn-cta-primary:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.btn-cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-10);
  background: transparent;
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-base);
}

.btn-cta-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-5px);
}


/* =================================================
   FOOTER
   ================================================= */

.site-footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--space-12) 0 var(--space-6);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  text-align: center;
}

.footer-container p {
  margin-bottom: var(--space-5);
  color: var(--gray-400);
}

.footer-container a {
  color: #fff;
  font-weight: 600;
  transition: color var(--transition-base);
}

.footer-container a:hover {
  color: var(--primary-400);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-800);
  border-radius: var(--radius-md);
  color: var(--gray-400);
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--primary-600);
  color: #fff;
  transform: translateY(-3px);
}


/* =================================================
   SCROLL PROGRESS BAR
   ================================================= */

.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 9999;
  pointer-events: none;
}

.scroll-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-500), var(--accent-purple), var(--accent-pink));
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--primary-400);
}


/* =================================================
   AOS FALLBACK ANIMATIONS
   ================================================= */

[data-aos] {
  opacity: 0;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos].aos-animate {
  opacity: 1;
}

[data-aos="fade-up"] {
  transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
}

[data-aos="fade-right"] {
  transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-left"] {
  transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
}

[data-aos="zoom-in"] {
  transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
  transform: scale(1);
}

[data-aos="flip-left"] {
  transform: perspective(1000px) rotateY(-20deg);
}

[data-aos="flip-left"].aos-animate {
  transform: perspective(1000px) rotateY(0);
}


/* =================================================
   RESPONSIVE DESIGN
   ================================================= */

@media (max-width: 1200px) {
  .about-hero-grid-pro,
  .summary-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }
  
  .about-hero-content-pro,
  .summary-content-pro {
    max-width: 700px;
    margin: 0 auto;
  }
  
  .hero-buttons-pro {
    justify-content: center;
  }
  
  .tech-orbit {
    margin-top: var(--space-10);
  }
}

@media (max-width: 900px) {
  .hero-stats-pro {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .expertise-grid-pro {
    grid-template-columns: 1fr;
  }
  
  .certs-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --space-6: 20px;
    --space-8: 28px;
    --space-10: 36px;
    --space-12: 44px;
    --space-16: 56px;
    --space-20: 72px;
    --space-24: 88px;
  }
  
  .about-hero-pro {
    padding: var(--space-16) 0;
    min-height: auto;
  }
  
  .glitch-text {
    font-size: 2.5rem;
  }
  
  .typing-text {
    font-size: 1.25rem;
  }
  
  .hero-description-pro {
    font-size: 1rem;
  }
  
  .floating-card {
    display: none;
  }
  
  .timeline-pro {
    padding-left: 30px;
  }
  
  .timeline-pro::before {
    left: 15px;
  }
  
  .timeline-dot {
    left: -23px;
  }
  
  .scroll-indicator {
    display: none;
  }
  
  .tech-orbit {
    transform: scale(0.8);
  }
  
  .cta-content-pro h2 {
    font-size: 2rem;
  }
  
  .cta-content-pro p {
    font-size: 1.125rem;
  }
  
  .btn-cta-primary,
  .btn-cta-secondary {
    font-size: 1rem;
    padding: var(--space-4) var(--space-6);
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-stats-pro {
    gap: var(--space-8);
  }
  
  .stat-circle {
    width: 100px;
    height: 100px;
  }
  
  .stat-number-pro {
    font-size: 1.5rem;
  }
  
  .tech-chips-wrapper,
  .tech-stack {
    gap: var(--space-2);
  }
  
  .tech-chip {
    font-size: 0.7rem;
    padding: var(--space-1) var(--space-3);
  }
  
  .cta-buttons-pro {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .btn-cta-primary,
  .btn-cta-secondary {
    width: 100%;
    justify-content: center;
  }
}


/* =================================================
   PRINT STYLES
   ================================================= */

@media print {
  .site-header,
  .site-footer,
  .scroll-indicator,
  .scroll-progress-bar,
  .cta-section-pro,
  #particles-js {
    display: none !important;
  }
  
  body {
    background: #fff;
    color: #000;
  }
  
  .about-hero-pro,
  .about-summary-pro,
  .expertise-section-pro,
  .timeline-section-pro,
  .certifications-pro {
    padding: 20px 0;
    page-break-inside: avoid;
  }
}


/* =================================================
   ACCESSIBILITY
   ================================================= */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-600);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}