/* Base Styles */
:root {
  --color-primary: #4F46E5;
  --color-primary-light: #EEF2FF;
  --color-primary-dark: #3730A3;
  --color-sky: #0284C7;
  --color-sky-light: #E0F2FE;
  --color-rose: #E11D48;
  --color-rose-light: #FFE4E6;
  --color-amber: #D97706;
  --color-amber-light: #FEF3C7;
  --color-light: #F9FAFB;
  --color-dark: #111827;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
  --transition: all 0.3s ease;
  --border-radius-sm: 0.25rem;
  --border-radius: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-full: 9999px;

  /* Default to light mode */
  --background-color: var(--color-light);
  --text-color: var(--color-gray-900);
  --text-color-light: var(--color-gray-600);
  --card-bg: white;
  --header-bg: rgba(255, 255, 255, 0.9);
  --footer-bg: var(--color-gray-900);
  --footer-text: var(--color-gray-300);
}

[data-theme="dark"] {
  --background-color: var(--color-gray-900);
  --text-color: white;
  --text-color-light: var(--color-gray-300);
  --card-bg: var(--color-gray-800);
  --header-bg: rgba(17, 24, 39, 0.9);
  --footer-bg: var(--color-gray-800);
  --footer-text: var(--color-gray-300);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.5;
  color: var(--text-color);
  background-color: var(--background-color);
  transition: var(--transition);
}

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

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

button {
  cursor: pointer;
  font-family: inherit;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 6rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-title p {
  font-size: 1.125rem;
  color: var(--text-color-light);
  max-width: 42rem;
  margin: 0 auto;
}

/* Header Styles */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  transition: var(--transition);
  background-color: var(--header-bg);
  backdrop-filter: blur(8px);
}

.header-scrolled {
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.nav-desktop {
  display: none;
}

.nav-desktop ul {
  display: flex;
  gap: 2rem;
}

.nav-link {
  position: relative;
  transition: var(--transition);
}

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

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

.nav-mobile-btn {
  display: block;
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.5rem;
}

.nav-mobile {
  position: fixed;
  top: 4rem;
  left: 0;
  width: 100%;
  height: calc(100vh - 4rem);
  background-color: var(--card-bg);
  padding: 2rem 1rem;
  transform: translateX(-100%);
  transition: transform 0.3s ease-in-out;
  z-index: 40;
}

.nav-mobile.show {
  transform: translateX(0);
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.nav-mobile-link {
  font-size: 1.25rem;
  padding: 0.5rem 0;
  display: block;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(to bottom right, #1E40AF, #3730A3, #2563EB);
  color: white;
  overflow: hidden;
}

.hero-bg-elements {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.hero-blob-1 {
  top: -10%;
  left: -10%;
  width: 40%;
  height: 40%;
  background-color: rgba(99, 102, 241, 0.3);
}

.hero-blob-2 {
  top: 30%;
  right: -5%;
  width: 35%;
  height: 35%;
  background-color: rgba(79, 70, 229, 0.2);
}

.hero-blob-3 {
  bottom: -5%;
  left: 25%;
  width: 30%;
  height: 30%;
  background-color: rgba(168, 85, 247, 0.2);
}

.hero-content {
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
  padding: 0 1rem;
  z-index: 10;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  animation: fadeInUp 1s ease-out;
}

.hero-title span {
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero-title span:first-of-type {
  background-image: linear-gradient(to right, #818CF8, #A5B4FC);
}

.hero-title span:last-of-type {
  background-image: linear-gradient(to right, #93C5FD, #BFDBFE);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 1s ease-out 0.2s forwards;
  opacity: 0;
  transform: translateY(20px);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  animation: fadeInUp 1s ease-out 0.4s forwards;
  opacity: 0;
  transform: translateY(20px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border: none;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid white;
  color: white;
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.scroll-indicator {
  animation: bounce 2s infinite;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.skill-card {
  position: relative;
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  transition: var(--transition);
  overflow: hidden;
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-gray-200);
}

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

.skill-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.skill-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--border-radius);
  color: white;
}

.skill-arrow {
  color: var(--text-color-light);
  transition: var(--transition);
}

.skill-card:hover .skill-arrow {
  transform: translateX(5px);
}

.skill-title {
  margin-top: 1.5rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.skill-description {
  margin-top: 0.75rem;
  color: var(--text-color-light);
  line-height: 1.6;
}

.skill-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  color: white;
  transition: var(--transition);
}

.skill-link:hover {
  transform: translateY(-2px);
}

/* Projects Section */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-button {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-full);
  border: none;
  background-color: var(--color-gray-200);
  color: var(--color-gray-700);
  font-weight: 500;
  transition: var(--transition);
}

.filter-button:hover {
  background-color: var(--color-gray-300);
}

.filter-button.active {
  background-color: var(--color-primary);
  color: white;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.project-card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.project-image-container {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-image {
  transform: scale(1.1);
}

.project-tags {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
}

.project-card:hover .project-tags {
  opacity: 1;
  transform: translateY(0);
}

.project-tag {
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius-full);
  background-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
}

.project-info {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.project-description {
  color: var(--text-color-light);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
  font-weight: 500;
  transition: var(--transition);
}

.project-button:hover {
  color: var(--color-primary-dark);
  gap: 0.75rem;
}

/* Contact Section */
.contact-section {
  background-color: var(--card-bg);
  padding: 6rem 0;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--border-radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-detail h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.contact-detail p {
  color: var(--text-color-light);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-weight: 500;
}

.form-input,
.form-textarea {
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-gray-300);
  background-color: var(--background-color);
  color: var(--text-color);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  background-color: var(--color-primary);
  color: white;
  font-weight: 500;
  border: none;
  transition: var(--transition);
  gap: 0.5rem;
  margin-top: 1rem;
}

.form-submit:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Footer Styles */
.footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.footer-col h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
  margin-bottom: 1.5rem;
}

.footer-description {
  margin-top: 1rem;
  max-width: 24rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--border-radius-full);
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  transition: var(--transition);
}

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

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-contact-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-primary);
  color: white;
  border-radius: var(--border-radius);
  font-weight: 500;
  margin-top: 1rem;
  transition: var(--transition);
}

.footer-contact-btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2rem 0;
  margin-top: 3rem;
  text-align: center;
}

/* Utilities */
.no-results {
  text-align: center;
  padding: 4rem 0;
  color: var(--text-color-light);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Media Queries */
@media (min-width: 640px) {
  .hero-title {
    font-size: 4rem;
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .nav-desktop {
    display: block;
  }
  
  .nav-mobile-btn {
    display: none;
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-container {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
  
  .hero-title {
    font-size: 5rem;
  }
}