/* ===== MODERN PORTFOLIO STYLES ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  /* Colors */
  --primary-color: #F7A51D;
  --primary-dark: #e59400;
  --secondary-color: #ffd35c;
  --accent-color: #6366f1;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  
  /* Text Colors */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  --gradient-dark: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(247, 165, 29, 0.3);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-light: #64748b;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(247, 165, 29, 0.2);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: background-color var(--transition-normal);
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-2xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: var(--font-size-base);
  position: relative;
  overflow: hidden;
  min-width: 180px;
  justify-content: center;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.875rem;
}

.btn::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: left 0.5s;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, #ff8c00 50%, var(--secondary-color) 100%);
  color: white;
  box-shadow: 0 8px 25px rgba(247, 165, 29, 0.3);
  border: 2px solid transparent;
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 15px 35px rgba(247, 165, 29, 0.4), 0 0 20px rgba(247, 165, 29, 0.2);
  background-position: right center;
}

.btn-primary:active {
  transform: translateY(-1px) scale(1.02);
}

.btn-secondary {
  background: transparent;
  color: white !important;
  border: 2px solid var(--primary-color);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  transition: width 0.3s ease;
  z-index: -1;
}

.btn-secondary:hover {
  color: white !important;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 10px 25px rgba(247, 165, 29, 0.3);
  border-color: var(--primary-color);
}

.btn-secondary:hover::before {
  width: 100%;
}

.btn-secondary:active {
  transform: translateY(-1px) scale(1.02);
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.navbar #logo img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

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

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

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

/* Theme Toggle */
.theme-switch {
  position: relative;
  margin-left: var(--spacing-lg);
}

#switch {
  display: none;
}

.toggle-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}

.toggle-icons:hover {
  background: var(--primary-color);
  color: white;
}

[data-theme="dark"] .toggle-icons {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .toggle-icons:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.toggle-icons img {
  width: 20px;
  height: 20px;
  transition: all var(--transition-normal);
}

.moon {
  position: absolute;
  opacity: 1;
  transform: rotate(0deg);
}

.sun {
  position: absolute;
  opacity: 0;
  transform: rotate(90deg);
}

#switch:checked + .toggle-icons .moon {
  opacity: 0;
  transform: rotate(-90deg);
}

#switch:checked + .toggle-icons .sun {
  opacity: 1;
  transform: rotate(0deg);
}

/* Mobile Menu Toggle */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

[data-theme="dark"] .hamburger span {
  background: var(--text-primary);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== HERO SECTION ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  margin-top: 0;
}

.content-text {
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xl);
  animation: slideInLeft 0.8s ease-out;
}

.content-text h2 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  animation: slideInLeft 0.8s ease-out 0.2s both;
}

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

.content-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
  animation: slideInLeft 0.8s ease-out 0.4s both;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  animation: slideInLeft 0.8s ease-out 0.6s both;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
}

.hero-actions .btn {
  position: relative;
  z-index: 2;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
  animation: slideInLeft 0.8s ease-out 0.8s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: slideInRight 0.8s ease-out 0.4s both;
}

.profile-card {
  position: relative;
  width: 400px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-image-container {
  position: relative;
  width: 300px;
  height: 300px;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  border: 4px solid white;
  box-shadow: var(--shadow-xl);
  animation: float 6s ease-in-out infinite;
}

.profile-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 320px;
  height: 320px;
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl);
  filter: blur(20px);
  opacity: 0.3;
  z-index: -1;
  animation: glow 4s ease-in-out infinite alternate;
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.floating-icon {
  position: absolute;
  width: 50px;
  height: 50px;
  background: white;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  animation: float 4s ease-in-out infinite;
}

[data-theme="dark"] .floating-icon {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--primary-color);
}

.floating-icon:nth-child(1) { 
  top: 10%; 
  left: 10%; 
  animation-delay: 0s;
}

.floating-icon:nth-child(2) { 
  top: 20%; 
  right: 10%; 
  animation-delay: 1s;
}

.floating-icon:nth-child(3) { 
  bottom: 20%; 
  left: 10%; 
  animation-delay: 2s;
}

.floating-icon:nth-child(4) { 
  bottom: 10%; 
  right: 20%; 
  animation-delay: 3s;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  animation: fadeInUp 0.8s ease-out 1s both;
}

[data-theme="dark"] .scroll-indicator {
  color: var(--text-secondary);
}

.scroll-arrow {
  width: 2px;
  height: 30px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  position: relative;
  animation: scrollBounce 2s infinite;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 6px solid var(--primary-color);
}

/* ===== PROJECTS SECTION ===== */
#projects {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.project-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.content-text {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.content-text h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.content-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.project {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  position: relative;
  height: 300px;
}

[data-theme="dark"] .card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .card:hover {
  box-shadow: var(--shadow-xl), 0 0 20px rgba(247, 165, 29, 0.1);
}

.project-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
  padding: var(--spacing-xl);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

[data-theme="dark"] .project-info {
  background: linear-gradient(transparent, rgba(15, 23, 42, 0.9));
}

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

.project-bio h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.project-bio p {
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--primary-color);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.project-link:hover {
  color: var(--secondary-color);
  transform: translateX(5px);
}

[data-theme="dark"] .project-link {
  color: var(--primary-color);
}

[data-theme="dark"] .project-link:hover {
  color: var(--secondary-color);
}

/* ===== FOOTER ===== */
#footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
}

[data-theme="dark"] #footer {
  background: var(--bg-primary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

#footer .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  text-align: center;
}

#footer a {
  color: var(--text-light);
  transition: color var(--transition-fast);
}

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

[data-theme="dark"] #footer a {
  color: var(--text-secondary);
}

[data-theme="dark"] #footer a:hover {
  color: var(--primary-color);
}

#footer .social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

#footer .social img {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-normal);
}

#footer .social a:hover img {
  transform: translateY(-3px);
}

#footer p {
  color: var(--text-light);
  font-size: 0.9rem;
}

[data-theme="dark"] #footer p {
  color: var(--text-secondary);
}

/* ===== ANIMATIONS ===== */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

@keyframes glow {
  from {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
  }
  to {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .header-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .content-text h2 {
    font-size: 3rem;
  }
  
  .hero-actions {
    justify-content: center;
    gap: var(--spacing-lg);
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .profile-card {
    width: 300px;
    height: 300px;
  }
  
  .profile-image-container {
    width: 250px;
    height: 250px;
  }
  
  .project {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    align-items: center;
  }
  
  .nav-menu.active {
    transform: none;
    opacity: 1;
  }
  
  .hamburger {
    display: none;
  }
  
  .nav-link {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .content-text h2 {
    font-size: 2.5rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .hero-actions .btn {
    min-width: 200px;
    width: 100%;
    max-width: 280px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .profile-card {
    width: 250px;
    height: 250px;
  }
  
  .profile-image-container {
    width: 200px;
    height: 200px;
  }
  
  .floating-icon {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  
  .content-text h2 {
    font-size: 2rem;
  }
  
  .project {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    gap: var(--spacing-md);
  }
  
  .nav-link {
    font-size: 0.8rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .content-text h2 {
    font-size: 2rem;
  }
  
  .content-text p {
    font-size: 1rem;
  }
  
  .hero-actions .btn {
    min-width: 160px;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.8rem;
  }
  
  .profile-card {
    width: 200px;
    height: 200px;
  }
  
  .profile-image-container {
    width: 160px;
    height: 160px;
  }
  
  .content-text h2 {
    font-size: 1.75rem;
  }
}