/* Loading Screen */
body.loading {
  overflow: hidden;
}

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loading-container {
  position: relative;
  width: 400px;
  height: 400px;
  overflow: hidden;
}

.loading-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.loading-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  position: absolute;
  top: 0;
  left: 0;
}

.loading-masked {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  clip-path: circle(0% at 50% 50%);
  animation: maskReveal 2s ease-in-out;
}

@keyframes maskReveal {
  0% {
    clip-path: circle(0% at 50% 50%);
  }
  50% {
    clip-path: circle(70% at 50% 50%);
  }
  100% {
    clip-path: circle(70% at 50% 50%);
  }
}

@media (max-width: 768px) {
  .loading-container {
    width: 300px;
    height: 300px;
  }
}

/* CSS Custom Properties - Design System */
:root {
  /* Color Palette - Senior-Level Approach */
  --color-primary: #2563eb;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1d4ed8;
  
  --color-gray-50: #f8f9fa;
  --color-gray-100: #f1f3f4;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6c757d;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #212529;
  
  --color-white: #ffffff;
  --color-black: #000000;
  
  /* Typography System */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Consolas', monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  
  /* Spacing System - 8px base unit */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */
  
  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  
  /* 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), 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);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

@media (max-width: 1024px) and (min-width: 768px) {
  .nav-menu {
    gap: var(--space-4);
  }
  
  .nav-link {
    font-size: var(--font-size-sm);
  }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-gray-700);
}

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

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

/* Header and Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.nav-logo .logo-link {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: color var(--transition-fast);
}

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

/* Hero Section */
.hero {
  padding: var(--space-32) 0 var(--space-24);
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.hero-title {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-normal);
  color: var(--color-gray-600);
  margin-top: var(--space-2);
}

.hero-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-6);
  color: var(--color-gray-700);
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

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

.tech-tag {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  gap: var(--space-2);
  min-height: 40px;
}

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

/* Tech logo below tag */
.tech-logo-overlay {
  width: 32px;
  height: 32px;
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transform: scale(0);
  opacity: 0;
  transition: all var(--transition-normal);
  margin-top: var(--space-1);
}

.tech-tag:hover .tech-logo-overlay {
  transform: scale(1);
  opacity: 1;
}

.tech-logo-overlay img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

/* Random flash animation for default state */
.tech-logo-overlay.flash {
  animation: randomFlash 1.5s ease-in-out;
}

@keyframes randomFlash {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(1.3);
    opacity: 1;
  }
  100% {
    transform: scale(0);
    opacity: 0;
  }
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-container {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-profile {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition-normal);
}

.profile-container:hover .hero-profile {
  transform: scale(1.05);
}

/* Legacy support for logo-container */
.logo-container {
  width: 300px;
  height: 300px;
  background-color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
  padding: var(--space-8);
}

.hero-logo {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* Section Styles */
section {
  padding: var(--space-24) 0;
}

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

.section-title {
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about {
  background-color: var(--color-gray-50);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (min-width: 768px) {
  .about-content {
    grid-template-columns: 2fr 1fr;
  }
}

.about-text {
  max-width: none;
}

.about-paragraph {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-6);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.stat-item {
  text-align: center;
  padding: var(--space-6);
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
}

/* Experience Section */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-gray-200);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-12);
  padding-left: var(--space-16);
}

.timeline-marker {
  position: absolute;
  left: 22px;
  top: var(--space-2);
  width: 16px;
  height: 16px;
  background-color: var(--color-primary);
  border-radius: 50%;
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 3px var(--color-gray-200);
}

.timeline-content {
  background-color: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
}

.timeline-header {
  margin-bottom: var(--space-4);
}

.timeline-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.timeline-company {
  display: inline-block;
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  margin-right: var(--space-4);
}

.timeline-period {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.timeline-description {
  margin-bottom: var(--space-6);
  color: var(--color-gray-700);
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tech-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
  border-radius: var(--border-radius);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

/* Projects Section */
.projects {
  background-color: var(--color-gray-50);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-content {
  padding: var(--space-6);
}

.project-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

.project-description {
  margin-bottom: var(--space-6);
  color: var(--color-gray-700);
}

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

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition-fast);
}

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

/* Ensure button project links work properly */
.project-link.view-project-btn {
  background: none;
  border: none;
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  padding: 0;
  margin: 0;
  pointer-events: auto;
  z-index: 10;
  position: relative;
}

/* Technical Expertise Section */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.expertise-category {
  background-color: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
}

.category-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-6);
  color: var(--color-gray-900);
}

.tech-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.tech-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-gray-100);
}

.tech-item:last-child {
  border-bottom: none;
}

.tech-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
}

.tech-experience {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* Contact Section */
.contact {
  background-color: var(--color-gray-50);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-wrapper {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.contact-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.contact-intro {
  margin-bottom: var(--space-4);
}

.contact-heading {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-3);
}

.contact-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  line-height: 1.6;
  margin: 0;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-method {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-5);
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-fast);
}

.contact-method:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.method-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.method-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.method-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a.method-value:hover {
  color: var(--color-primary);
}

.method-note {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.contact-social {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}

.social-heading {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.social-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
  text-decoration: none;
  font-size: var(--font-size-base);
}

.social-button:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.social-button svg {
  transition: transform var(--transition-fast);
}

.social-button:hover svg {
  transform: scale(1.1);
}

.contact-right {
  display: flex;
  align-items: stretch;
}

.contact-form-container {
  background-color: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-gray-200);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  flex: 1;
}

.form-heading {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-6);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
}

.form-input,
.form-textarea {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-gray-900);
  transition: all var(--transition-fast);
  background-color: var(--color-white);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.form-submit:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.form-submit:active {
  transform: translateY(0);
}

.form-submit svg {
  transition: transform var(--transition-fast);
}

.form-submit:hover svg {
  transform: translateX(4px);
}

/* Footer */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--space-8) 0;
  text-align: center;
}

.footer-text {
  margin: 0;
  font-size: var(--font-size-sm);
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-line {
  width: 30px;
  height: 3px;
  background-color: var(--color-gray-900);
  border-radius: 2px;
  transition: all var(--transition-normal);
  transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateX(-20px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Responsive Design */
@media (max-width: 767px) {
  .nav-container {
    padding: var(--space-4) var(--space-4);
    position: relative;
  }

  .nav-logo .logo-link {
    font-size: var(--font-size-lg);
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-24) var(--space-6);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: right var(--transition-normal);
    z-index: 1000;
    gap: var(--space-2);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: var(--space-4);
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--color-gray-100);
  }

  /* Mobile menu overlay */
  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-normal);
  }

  .nav-overlay.active {
    display: block;
    opacity: 1;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    padding-left: var(--space-12);
  }
  
  .timeline-marker {
    left: 12px;
  }
  
  .contact-links {
    align-items: stretch;
  }
  
  .social-link {
    justify-content: center;
  }
}

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

/* Focus States */
a:focus,
button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Modal Styles */
.modal {
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  pointer-events: none;
}

.modal.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 90vw;
  max-height: 90vh;
  width: 100%;
  margin: auto;
  overflow: hidden;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-gray-500);
  cursor: pointer;
  z-index: 10;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

.modal-header {
  padding: var(--space-6) var(--space-6) var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0;
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  max-height: 60vh;
}

.modal-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: opacity var(--transition-normal);
}

.modal-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
  margin-bottom: var(--space-6);
}

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

.modal-tech .tech-badge {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.modal-footer {
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  text-align: center;
}

.modal-github-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.modal-github-link:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* View Project Button Styles */
.view-project-btn {
  background: none;
  border: none;
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition-fast);
  color: var(--color-primary);
  pointer-events: auto;
  z-index: 10;
  position: relative;
}

.view-project-btn:hover {
  text-decoration-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.view-project-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Mobile Device Frame for GoHub Project */
.mobile-frame {
  position: relative;
  width: 300px;
  height: 600px;
  margin: 0 auto var(--space-6);
  background: #1a1a1a;
  border-radius: 30px;
  padding: 20px 15px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border: 3px solid #333;
}

.mobile-frame::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: #333;
  border-radius: 2px;
}

.mobile-screen {
  width: 100%;
  height: 100%;
  background: #000;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  min-height: 400px;
}

.mobile-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  display: block;
  background-color: #f0f0f0;
}

.mobile-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  display: block;
  background-color: #f0f0f0;
}

.mobile-frame-controls {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 4px;
  background: #333;
  border-radius: 2px;
}

/* Project Image Slider */
.project-slider {
  margin: 0 auto var(--space-6);
  max-width: 600px;
}

.slider-container {
  position: relative;
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.slider-wrapper {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
}

.slider-track {
  display: flex;
  transition: transform 0.3s ease-in-out;
  height: 100%;
}

.slider-slide {
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-50);
}

.slider-slide img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--border-radius);
}

.slider-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

.slider-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
}

.slider-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 50%;
  color: var(--color-gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider-btn:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.slider-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.slider-btn:disabled:hover {
  background-color: var(--color-white);
  color: var(--color-gray-600);
  border-color: var(--color-gray-300);
}

.slider-indicators {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.slider-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-gray-300);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.slider-indicator.active {
  background-color: var(--color-primary);
}

.slider-indicator:hover {
  background-color: var(--color-primary);
  opacity: 0.7;
}

.slider-counter {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background-color: rgba(0, 0, 0, 0.7);
  color: var(--color-white);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Responsive Slider */
@media (max-width: 768px) {
  .project-slider {
    max-width: 100%;
  }
  
  .slider-wrapper {
    height: 300px;
  }
  
  .slider-controls {
    padding: var(--space-3);
  }
  
  .slider-btn {
    width: 36px;
    height: 36px;
  }
  
  .slider-counter {
    top: var(--space-2);
    right: var(--space-2);
    font-size: var(--font-size-xs);
  }
}

/* Responsive Modal */
@media (max-width: 768px) {
  .modal-content {
    max-width: 95vw;
    max-height: 95vh;
    margin: var(--space-4);
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: var(--space-4);
  }
  
  .modal-title {
    font-size: var(--font-size-xl);
  }
  
  .modal-description {
    font-size: var(--font-size-base);
  }
  
  .modal-close {
    top: var(--space-2);
    right: var(--space-2);
    width: 32px;
    height: 32px;
    font-size: var(--font-size-xl);
  }
  
  /* Mobile frame adjustments for small screens */
  .mobile-frame {
    width: 250px;
    height: 500px;
    padding: 15px 12px;
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .modal {
    display: none;
  }
  
  .hero {
    padding-top: var(--space-8);
  }
  
  section {
    padding: var(--space-8) 0;
  }
  
  .project-card:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
}