/* ==========================================
   WORLD-CLASS #1 PORTFOLIO DESIGN SYSTEM
   Next-Generation Premium Design
   ========================================== */

:root {
  /* ========== COLOR PALETTE ========== */
  --primary-dark: #0a0e27;
  --primary-light: #1a1f3a;
  --accent-primary: #6366f1;
  --accent-secondary: #ec4899;
  --accent-tertiary: #06b6d4;
  --accent-quaternary: #f59e0b;
  
  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-accent: #06b6d4;
  
  /* Surface Colors */
  --surface-primary: #0f172a;
  --surface-secondary: #1e293b;
  --surface-tertiary: #334155;
  --glass-light: rgba(255, 255, 255, 0.08);
  --glass-dark: rgba(0, 0, 0, 0.3);
  
  /* Borders */
  --border-light: rgba(255, 255, 255, 0.1);
  --border-dark: rgba(0, 0, 0, 0.2);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.4);
  --shadow-glow-secondary: 0 0 40px rgba(6, 182, 212, 0.3);
  
  /* Transitions */
  --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 800ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ========================================
   BASE STYLES & GLOBAL
   ======================================== */

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

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

body {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #0f172a 50%, #1a0f3a 100%);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.4px;
  overflow-x: hidden;
}

/* ========================================
   ENHANCED TYPOGRAPHY SYSTEM
   ========================================  */

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin: 0;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5.5rem);
  background: linear-gradient(135deg, 
    var(--accent-primary) 0%, 
    var(--accent-secondary) 50%, 
    var(--accent-tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
  letter-spacing: -2px;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease-out;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--text-primary);
  margin-top: 3.5rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.8px;
}

h2::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
  opacity: 0.5;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 5px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 3px;
  animation: slideInRight 0.8s ease-out;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

h3 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

h4 {
  font-size: 1.35rem;
  color: var(--text-primary);
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  color: var(--text-secondary);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  line-height: 1.85;
  margin-bottom: 1.25rem;
  letter-spacing: 0.3px;
}

strong {
  color: var(--text-primary);
  font-weight: 700;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  font-weight: 600;
}

a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transition: width var(--transition-base);
  border-radius: 1px;
}

a:hover {
  color: var(--accent-secondary);
}

a:hover::after {
  width: 100%;
}

/* ========================================
   HERO SECTION - WORLD CLASS
   ======================================== */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 5rem;
  align-items: center;
  margin: 4rem 0 6rem 0;
  padding: 4rem 0;
}

.hero-image {
  position: relative;
  width: 100%;
  max-width: 450px;
  animation: fadeInLeft 0.9s ease-out;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  border-radius: 30px;
  opacity: 0.1;
  animation: pulse 4s ease-in-out infinite;
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: -15px;
  border: 2px solid transparent;
  border-image: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)) 1;
  border-radius: 25px;
  opacity: 0.3;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 25px;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transition: all var(--transition-slow);
  z-index: 1;
  position: relative;
}

.hero-image img:hover {
  transform: scale(1.02) translateY(-5px);
  box-shadow: 0 30px 60px rgba(99, 102, 241, 0.5);
}

.hero-text {
  animation: fadeInRight 0.9s ease-out 0.1s both;
}

.hero-text h3 {
  font-size: 1.3rem;
  color: var(--text-accent);
  margin-bottom: 0.5rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-text h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.15;
}

.hero-text p {
  font-size: 1.15rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.cta-row {
  display: flex;
  gap: 1.25rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.cta:not(.ghost) {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.cta:not(.ghost):hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.5);
}

.cta.ghost {
  border: 2px solid var(--accent-primary);
  color: var(--accent-primary);
  background: transparent;
}

.cta.ghost:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
  transform: translateY(-2px);
}

/* ========================================
   SECTION STYLES
   ======================================== */

section {
  margin: 6rem 0;
  padding: 0;
}

section > h2:first-child {
  margin-top: 0;
}

/* What I Do Section */
.what-i-do {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin: 3rem 0;
}

.what-i-do > div {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(6, 182, 212, 0.05));
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.what-i-do > div:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--accent-primary);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.1));
}

.what-i-do > div p {
  margin-bottom: 0;
  font-size: 1.05rem;
}

/* Experience & Achievements */
.experience-section,
.achievements-section,
.skills-section {
  margin: 4rem 0;
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.achievement-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(236, 72, 153, 0.05));
  padding: 2.25rem;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  text-align: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.achievement-card:hover {
  transform: scale(1.05) translateY(-10px);
  box-shadow: var(--shadow-xl), var(--shadow-glow-secondary);
  border-color: var(--accent-secondary);
}

.achievement-card h4 {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.achievement-card p {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
}

.skill-badge {
  background: linear-gradient(135deg, var(--surface-secondary), var(--surface-tertiary));
  padding: 1.25rem;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  text-align: center;
  font-weight: 700;
  font-size: 1.05rem;
  transition: all var(--transition-base);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.skill-badge:hover {
  transform: translateY(-6px) scale(1.08);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
  background: linear-gradient(135deg, 
    rgba(99, 102, 241, 0.2), 
    rgba(6, 182, 212, 0.15));
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    width: 0;
  }
  to {
    width: 80px;
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.15;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.5);
  }
}

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

/* ========================================
   TABLES & CODE BLOCKS
   ======================================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

thead {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.1));
  border-bottom: 2px solid var(--accent-primary);
}

th {
  padding: 1.25rem;
  text-align: left;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  font-size: 1rem;
}

tbody tr:hover {
  background: rgba(99, 102, 241, 0.08);
}

code {
  background: var(--surface-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  color: var(--accent-tertiary);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.95rem;
  border: 1px solid var(--border-light);
}

pre {
  background: var(--surface-primary);
  border: 1px solid var(--border-light);
  padding: 1.5rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 2rem 0;
  box-shadow: var(--shadow-lg);
}

pre code {
  background: transparent;
  padding: 0;
  border: none;
  color: var(--text-secondary);
}

/* ========================================
   LISTS
   ======================================== */

ul, ol {
  margin: 1.5rem 0;
  padding-left: 2.5rem;
}

li {
  margin: 0.75rem 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

li strong {
  color: var(--text-primary);
}

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

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    margin: 2rem 0 4rem 0;
  }
  
  .hero-image {
    max-width: 100%;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .cta-row {
    gap: 1rem;
  }
  
  .cta {
    flex: 1;
    min-width: 150px;
  }
  
  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  p {
    font-size: 1rem;
  }
  
  .cta {
    padding: 0.85rem 1.5rem;
    font-size: 0.95rem;
  }
  
  .skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  }
}

/* ========================================
   DARK MODE ENHANCEMENTS
   ======================================== */

@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #0a0e27 0%, #0f0a2e 50%, #1a0f3a 100%);
  }
}

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

@media print {
  .cta-row,
  .contact-section {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}