/* Enhanced Professional Portfolio CSS */

:root {
  /* Updated Color Palette */
  --primary: #2C3E50;
  --primary-light: #34495E;
  --secondary: #3498DB;
  --secondary-light: #5DADE2;
  --accent: #E8F4FD;
  --background: #FAFBFC;
  --section-bg: #FFFFFF;
  --text: #2C3E50;
  --text-light: #5D6D7E;
  --text-muted: #85929E;
  --border: #E5E8EB;
  --shadow: 0 4px 20px rgba(44, 62, 80, 0.08);
  --shadow-hover: 0 8px 30px rgba(44, 62, 80, 0.12);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-headings: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* Dark Theme Variables */
body.dark-theme {
  --primary: #E0E0E0;
  --primary-light: #B0B0B0;
  --secondary: #00D4FF;
  --secondary-light: #66E0FF;
  --accent: #1F2937;
  --background: #0F172A;
  --section-bg: #1E293B;
  --text: #F1F5F9;
  --text-light: #CBD5E1;
  --text-muted: #94A3B8;
  --border: #334155;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.6);
}

/* Dark Theme Navigation */
body.dark-theme nav {
  background: rgba(0, 0, 0, 0.95);
}

body.dark-theme .nav-menu {
  background: rgba(0, 0, 0, 0.98);
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 600;
  line-height: 1.3;
  color: var(--primary);
  margin: 0 0 var(--spacing-md) 0;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.875rem); }
h4 { font-size: 1.25rem; }

p {
  margin: 0 0 var(--spacing-md) 0;
  color: var(--text-light);
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

a:hover, a:focus {
  color: var(--primary);
  outline: none;
}

/* Enhanced Link Underline Effect */
.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: width 0.3s ease;
}

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

/* Layout Components */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--section-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-xl);
  transition: box-shadow 0.3s ease;
}

.container:hover {
  box-shadow: var(--shadow-hover);
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
}

.nav-brand {
  display: none;
}

.brand-link {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
  text-decoration: none;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

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

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

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

.nav-menu {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-light);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  position: relative;
}

.nav-menu li a:hover,
.nav-menu li a:focus {
  color: var(--primary);
  background: var(--accent);
  transform: translateY(-1px);
}

/* Theme Toggle Button */
.btn-theme-toggle {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1rem;
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-theme-toggle:hover,
.btn-theme-toggle:focus {
  color: var(--secondary-light);
  background: var(--accent);
  transform: translateY(-1px);
}

body.dark-theme .btn-theme-toggle .fa-moon {
  display: none;
}

.btn-theme-toggle .fa-sun {
  display: none;
}

body.dark-theme .btn-theme-toggle .fa-sun {
  display: inline;
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
  min-height: 80vh;
  padding: var(--spacing-2xl) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.hero-text {
  flex: 1;
  min-width: 300px;
}

.hero-text h1 {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.hero-text .subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

.hero-text .description {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-light);
  max-width: 500px;
  margin-bottom: var(--spacing-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Enhanced Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.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(--secondary) 0%, var(--primary) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
  color: white;
}

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

.btn-secondary:hover {
  background: var(--secondary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
}

/* Hero Image */
.hero-image {
  flex: 0 0 300px;
  position: relative;
}

.hero-image img {
  width: 500px;
  height: 500px;
  object-fit: cover;
  border-radius: 50%;
  background: transparent;
  border: none;
  box-shadow: none;
  transition: all 0.3s ease;
}

.hero-image img:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 50px rgba(44, 62, 80, 0.2);
}

/* Section Titles */
.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-xl);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  border-radius: 2px;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.skill-category {
  background: var(--section-bg);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--secondary-light);
}

.skill-category h3 {
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tag {
  background: var(--accent);
  color: var(--secondary);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-xl);
  transition: all 0.3s ease;
  cursor: default;
  border: 1px solid transparent;
}

.skill-tag:hover {
  background: var(--secondary);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

/* Tools Section */
.tools-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--section-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  transition: box-shadow 0.3s ease;
  width: 100%;
  display: block;
}

.tools-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
  width: 100%;
}

.tools-section:hover {
  box-shadow: var(--shadow-hover);
}

.tools-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

.tool-logo {
  font-size: 3rem;
  color: var(--text-muted);
  transition: all 0.3s ease;
  display: inline-block;
}

.tool-logo:hover {
  color: var(--secondary);
  transform: scale(1.1);
}

/* Specific colors for each tool logo */
.tool-logo.linux { color: #fcc624; }
.tool-logo.windows { color: #0078d4; }
.tool-logo.docker { color: #2496ed; }
.tool-logo.kubernetes { color: #326CE5; }
.tool-logo.git { color: #f05032; }
.tool-logo.ansible { color: #ee0000; }
.tool-logo.jenkins { color: #d24939; }
.tool-logo.prometheus { color: #e6522c; }
.tool-logo.aws { color: #ff9900; }
.tool-logo.azure { color: #0078d4; }
.tool-logo.terraform { color: #623ce4; }
.tool-logo.python { color: #3776ab; }



/* Cards */
.card {
  background: var(--section-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--secondary-light);
}

.card h3 {
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.card h4 {
  color: var(--secondary);
  font-size: 1.125rem;
  margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
}

.card ul {
  padding-left: var(--spacing-lg);
  color: var(--text-light);
}

.card li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.project-card {
  background: var(--section-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--secondary-light);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.project-title {
  color: var(--primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  flex: 1;
}

.project-thumbnail {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid var(--border);
  flex-shrink: 0;
  margin-left: var(--spacing-md);
}

.project-thumbnail:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow);
  border-color: var(--secondary);
}

.project-description {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.tech-tag {
  background: var(--accent);
  color: var(--secondary);
  padding: 0.25rem var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.project-links a {
  color: var(--secondary);
  font-weight: 600;
  margin-right: var(--spacing-md);
  position: relative;
}

.project-links a::after {
  content: '→';
  margin-left: var(--spacing-xs);
  transition: transform 0.3s ease;
}

.project-links a:hover::after {
  transform: translateX(4px);
}

/* Certifications and Languages */
.certifications-section,
.languages-section {
  background: var(--section-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  border: 1px solid var(--border);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.certifications-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.certification-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.certification-item:hover {
  padding-left: var(--spacing-sm);
  background: var(--accent);
  margin: 0 calc(-1 * var(--spacing-sm));
  border-radius: var(--radius-sm);
}

.certification-title a {
  color: var(--primary);
  font-weight: 600;
  font-size: 1.1rem;
}

.certification-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.languages-list {
  display: flex;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.language-item {
  background: var(--accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
  min-width: 140px;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

.language-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  background: var(--secondary);
  color: white;
}

.language-item:hover .language-level {
  color: rgba(255, 255, 255, 0.8);
}

/* Contact Section */
.contact-section {
  background: linear-gradient(135deg, var(--accent) 0%, rgba(52, 152, 219, 0.1) 100%);
  border: 1px solid var(--border);
}

.call-to-act h3 {
  text-align: center;
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: var(--spacing-xl);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-form label {
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-xs);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  padding: var(--spacing-md);
  font-size: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--section-bg);
  transition: all 0.3s ease;
  font-family: var(--font-body);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
  transform: translateY(-1px);
}

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

.contact-form button {
  align-self: flex-start;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all 0.3s ease;
}

.contact-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

/* Footer */
body:not(.dark-theme) footer {
  background: var(--accent);
  color: #000000;
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--primary-light);
  box-shadow: none;
}

body:not(.dark-theme) footer {
  background: #e6f0fa; /* Light blue background */
  color: #000000; /* Black for text */
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid #a3b1c6; /* Light navy border */
  box-shadow: none;
}

body:not(.dark-theme) footer,
body:not(.dark-theme) footer .footer-logo,
body:not(.dark-theme) footer nav a,
body:not(.dark-theme) footer .social-icons a {
  color: #000080; /* Navy color for links and icons */
}

body:not(.dark-theme) footer nav a:hover,
body:not(.dark-theme) footer .social-icons a:hover {
  color: #000033; /* Darker navy on hover */
}

footer {
  background: var(--section-bg);
  color: var(--text);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
}

/* Footer links and icons */
body:not(.dark-theme) footer .social-icons a {
  color: #000080; /* Navy color for links and icons */
}

body.dark-theme footer .social-icons a {
  color: var(--text-light);
}

body:not(.dark-theme) footer .social-icons a:hover {
  color: #000033; /* Darker navy on hover */
}

body.dark-theme footer .social-icons a:hover {
  color: var(--secondary-light);
}

body:not(.dark-theme) footer nav a {
  color: #000080; /* Navy color for nav links */
}

body.dark-theme footer nav a {
  color: var(--text-light);
}

body:not(.dark-theme) footer nav a:hover {
  color: #000033; /* Darker navy on hover */
}

body.dark-theme footer nav a:hover {
  color: var(--secondary-light);
}

/* Override copyright text color in light theme */
body:not(.dark-theme) footer .footer-content > div:last-child {
  color: #000000 !important;
  font-size: 0.9rem;
  margin-top: var(--spacing-lg);
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--section-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

/* Navigation links */
.nav-menu li a {
  color: var(--text-light);
}

.nav-menu li a:hover,
.nav-menu li a:focus {
  color: var(--secondary-light);
  background: var(--accent);
  transform: translateY(-1px);
}

footer .footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

footer .social-icons {
  margin-bottom: var(--spacing-lg);
}

footer .social-icons a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.5rem;
  margin: 0 var(--spacing-md);
  transition: all 0.3s ease;
}

footer .social-icons a:hover {
  color: white;
  transform: translateY(-2px);
}

footer nav a {
  color: rgba(255, 255, 255, 0.8);
  margin: 0 var(--spacing-md);
  font-weight: 500;
  transition: all 0.3s ease;
}

footer nav a:hover {
  color: white;
}

/* Responsive Design */

/* Tablet and Mobile Styles */
@media (max-width: 1024px) {
  .hero {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .hero-text {
    flex: 1;
    min-width: 280px;
  }

  .hero-image img {
    width: 400px;
    height: 400px;
  }

  .container {
    margin: 0 var(--spacing-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .tools-section {
    padding: var(--spacing-xl) var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
  }

  /* Mobile Navigation */
  .nav-brand {
    display: block;
  }

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

  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu li {
    width: 100%;
    text-align: center;
  }

  .nav-menu li a {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    width: 100%;
    border-radius: var(--radius-md);
  }

  /* Hero Section */
  .hero {
    flex-direction: column;
    text-align: center;
    min-height: auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    gap: var(--spacing-xl);
  }

  .hero-text {
    flex: none;
    order: 2;
  }

  .hero-image {
    flex: none;
    order: 1;
  }

  .hero-image img {
    width: 280px;
    height: 280px;
  }

  .hero-buttons {
    justify-content: center;
  }

  /* Containers */
  .container {
    margin: 0 var(--spacing-md);
    padding: var(--spacing-lg);
  }

  /* Tools Section - Mobile Friendly */
  .tools-section {
    padding: var(--spacing-lg);
  }

  .tools-logos {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-lg);
    width: 100% !important;
    height: auto !important;
    justify-items: center;
    align-items: center;
  }

  .tool-logo {
    font-size: 2.5rem !important;
    transform: none !important;
  }

  /* Skills and Projects */
  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  /* Languages */
  .languages-list {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
  }

  .language-item {
    min-width: 200px;
  }

  /* Certifications */
  .certification-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  /* Contact Form */
  .contact-container {
    flex-direction: column !important;
    gap: var(--spacing-xl) !important;
  }

  .container-contact-form,
  .container-contact-info {
    flex: none !important;
    min-width: auto !important;
    width: 100% !important;
  }

  .contact-form {
    max-width: none;
  }

  /* Footer */
  footer nav a {
    display: block;
    margin: var(--spacing-xs) 0;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }

  .nav-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .brand-link {
    font-size: 1.1rem;
  }

  .hero {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .hero-text .subtitle {
    font-size: 1.1rem;
  }

  .hero-image img {
    width: 240px;
    height: 240px;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    justify-content: center;
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
  }

  .container {
    margin: 0 var(--spacing-sm);
    padding: var(--spacing-md);
  }

  .tools-logos {
    grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
    gap: var(--spacing-md);
  }

  .tool-logo {
    font-size: 2rem !important;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .skill-category,
  .project-card {
    padding: var(--spacing-lg);
  }

  .contact-form input,
  .contact-form textarea,
  .contact-form select {
    padding: var(--spacing-md);
  }

  .contact-form button {
    align-self: stretch;
    padding: var(--spacing-md);
    font-size: 1rem;
  }

  footer {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  footer .social-icons a {
    font-size: 1.25rem;
    margin: 0 var(--spacing-sm);
  }
}

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

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(44, 62, 80, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  overflow-y: auto;
  padding: 2rem;
  box-sizing: border-box;
}

/* Modal Content */
.modal-content {
  background: var(--section-bg);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  position: relative;
  padding: 1.5rem 2rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Modal Close Button */
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  font-size: 2rem;
  color: var(--primary);
  cursor: pointer;
  transition: color 0.3s ease;
  line-height: 1;
}

.modal-close:hover,
.modal-close:focus {
  color: var(--secondary);
  outline: none;
}

/* Modal Body */
.modal-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow-y: auto;
}

/* Modal Title */
#modal-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
  text-align: center;
}

/* Modal Images Container */
.modal-images {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Modal Images */
.modal-images img {
  max-width: 100%;
  max-height: 600px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  object-fit: contain;
  cursor: default;
  transition: transform 0.3s ease;
}

.modal-images img:hover {
  transform: scale(1.02);
}

/* Responsive Modal */
@media (max-width: 768px) {
  .modal-content {
    max-width: 100%;
    padding: 1rem;
  }

  .modal-images img {
    max-height: 400px;
  }
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .hero-buttons,
  .contact-form,
  nav {
    display: none;
  }
  
  .container {
    box-shadow: none;
    border: 1px solid var(--border);
  }
}