/* ===========================
   CSS VARIABLES & ROOT STYLES
   =========================== */

:root {
  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --accent: #4361ee;
  --success: #2a9d8f;
  --warning: #e9c46a;
  --shadow: rgba(0, 0, 0, 0.1);
  --card-bg: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.9);

  /* Fluid Typography */
  --fluid-min-width: 320;
  --fluid-max-width: 1440;

  /* Spacing System (4px base) */
  --space-xs: clamp(0.5rem, 0.48rem + 0.1vw, 0.56rem);
  --space-sm: clamp(0.75rem, 0.7rem + 0.24vw, 0.94rem);
  --space-md: clamp(1rem, 0.93rem + 0.35vw, 1.25rem);
  --space-lg: clamp(1.5rem, 1.39rem + 0.52vw, 1.88rem);
  --space-xl: clamp(2rem, 1.86rem + 0.7vw, 2.5rem);
  --space-2xl: clamp(3rem, 2.79rem + 1.05vw, 3.75rem);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 50px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --text-primary: #e9ecef;
  --text-secondary: #adb5bd;
  --accent: #4895ef;
  --success: #4ecdc4;
  --warning: #ffd166;
  --shadow: rgba(0, 0, 0, 0.3);
  --card-bg: #1e1e1e;
  --nav-bg: rgba(18, 18, 18, 0.9);
}

/* ===========================
   RESET & BASE STYLES
   =========================== */

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

html,
body {
  max-width: 100vw;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Lato", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  position: relative;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Montserrat", sans-serif;
  line-height: 1.2;
}

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

/* ===========================
   NAVIGATION
   =========================== */

.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100vw;
  max-width: 100%;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  box-shadow: 0 2px 20px var(--shadow);
  transition: all var(--transition-base);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: clamp(1.25rem, 1.15rem + 0.52vw, 1.65rem);
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  align-items: center;
}

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

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
}

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

.nav-links a:hover {
  color: var(--accent);
}

.theme-toggle {
  background: var(--accent);
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   HERO SECTION
   =========================== */

.hero-section {
  min-height: 100vh;
  width: 100%;
  max-width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-xl);
}

.animated-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(67, 97, 238, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(42, 157, 143, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 40%,
      rgba(233, 196, 106, 0.1) 0%,
      transparent 50%
    );
  animation: gradientShift 15s ease infinite;
}

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

.particles-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0;
}

.particle {
  position: absolute;
  background: var(--accent);
  opacity: 0.1;
  will-change: transform;
}

.hero-content {
  max-width: 800px;
  text-align: center;
  z-index: 1;
  position: relative;
}

.hero-title {
  font-size: clamp(2.5rem, 2rem + 2.5vw, 4.5rem);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
  min-height: 80px;
}

.typing-text {
  display: inline-block;
  color: var(--text-primary);
}

.typing-cursor {
  border-right: 3px solid var(--accent);
  padding-right: 5px;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

.hero-subtitle {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  opacity: 0;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--accent);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-base);
  opacity: 0;
  box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(67, 97, 238, 0.4);
}

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

section {
  padding: var(--space-2xl) var(--space-md);
  max-width: 100vw;
  overflow-x: hidden;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(2rem, 1.7rem + 1.5vw, 3.5rem);
  text-align: center;
  margin-bottom: var(--space-2xl);
  color: var(--accent);
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background: var(--accent);
  margin: var(--space-md) auto 0;
  border-radius: 2px;
}

/* ===========================
   ABOUT SECTION
   =========================== */

.about-section {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-2xl);
  align-items: center;
}

.about-image-container {
  position: relative;
}

.about-image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px var(--shadow);
  transition: transform var(--transition-slow);
}

.about-image:hover {
  transform: scale(1.05) rotate(2deg);
}

.about-text h3 {
  font-size: clamp(1.5rem, 1.3rem + 1vw, 2.5rem);
  margin-bottom: var(--space-md);
  color: var(--accent);
}

.about-text p {
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
}

.skill-bars {
  margin-top: var(--space-xl);
}

.skill {
  margin-bottom: var(--space-lg);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.skill-name {
  font-weight: 600;
  color: var(--text-primary);
}

.skill-level {
  font-weight: 500;
  color: var(--accent);
  font-size: 0.9rem;
}

.skill-bar {
  height: 10px;
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: inset 0 2px 4px var(--shadow);
}

.skill-progress {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--success));
  border-radius: var(--radius-sm);
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.skill-progress::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* ===========================
   TECH STACK SECTION
   =========================== */

.tech-categories {
  display: grid;
  gap: var(--space-2xl);
}

.tech-category {
  background: var(--card-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px var(--shadow);
}

.category-title {
  font-size: clamp(1.3rem, 1.2rem + 0.5vw, 1.75rem);
  color: var(--accent);
  margin-bottom: var(--space-lg);
  text-align: center;
}

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
  align-items: center;
  max-width: 100%;
}

.tech-item {
  background: var(--bg-secondary);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  width: 150px;
  max-width: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.tech-item:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 0 15px 40px var(--shadow);
}

.tech-item::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: 10;
}

.tech-item:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(-5px);
}

.tech-icon {
  font-size: clamp(2.5rem, 2.3rem + 1vw, 3.5rem);
  margin-bottom: var(--space-sm);
  display: flex;
  justify-content: center;
  align-items: center;
}

.tech-icon img {
  width: 100%;
  max-width: 56px;
  height: 56px;
  object-fit: contain;
}

.tech-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: clamp(0.9rem, 0.85rem + 0.25vw, 1.1rem);
  text-align: center;
}

/* ===========================
   ACHIEVEMENTS SECTION
   =========================== */

.achievements-section {
  background: var(--bg-secondary);
}

.timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50px;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--accent);
}

.achievement-card {
  background: var(--card-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  box-shadow: 0 10px 30px var(--shadow);
  position: relative;
  display: flex;
  gap: var(--space-lg);
  transition: all var(--transition-base);
}

.achievement-card:hover {
  transform: translateX(10px);
  box-shadow: 0 15px 40px var(--shadow);
}

.achievement-icon {
  font-size: 3rem;
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 50%;
}

.achievement-content h3 {
  color: var(--accent);
  margin-bottom: var(--space-sm);
  font-size: clamp(1.2rem, 1.1rem + 0.5vw, 1.6rem);
}

.achievement-date {
  color: var(--warning);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
}

.achievement-preview {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.read-more-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: "Lato", sans-serif;
  font-size: 0.9rem;
}

.read-more-btn:hover {
  background: var(--success);
  transform: translateX(5px);
}

.read-more-btn i {
  transition: transform var(--transition-base);
}

.read-more-btn:hover i {
  transform: translateX(5px);
}

/* ===========================
   MODAL STYLES
   =========================== */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  animation: fadeIn 0.3s ease;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-2xl);
  position: relative;
  animation: slideUp 0.3s ease;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--bg-secondary);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 1.2rem;
  color: var(--text-primary);
}

.modal-close:hover {
  background: var(--accent);
  color: white;
  transform: rotate(90deg);
}

.modal-header {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.modal-icon {
  font-size: 4rem;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 50%;
  flex-shrink: 0;
}

.modal-date {
  color: var(--warning);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  font-size: 1rem;
}

.modal-title {
  color: var(--accent);
  font-size: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  margin-bottom: 0;
}

.modal-body {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1.05rem;
}

.modal-body p {
  margin-bottom: var(--space-md);
}

/* ===========================
   PROJECTS SECTION
   =========================== */

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.5rem;
  background: var(--card-bg);
  border: 2px solid var(--accent);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: "Lato", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  min-width: 44px;
  min-height: 44px;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px var(--shadow);
  transition: all var(--transition-base);
  opacity: 1;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px var(--shadow);
}

.project-image-container {
  position: relative;
  overflow: hidden;
  height: 250px;
}

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

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

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

.project-title {
  font-size: clamp(1.3rem, 1.2rem + 0.5vw, 1.7rem);
  margin-bottom: var(--space-md);
  color: var(--accent);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.tech-tag {
  padding: 0.4rem 1rem;
  background: var(--accent);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
}

.project-actions {
  display: flex;
  gap: var(--space-md);
}

.btn {
  flex: 1;
  padding: 0.75rem;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
}

.btn-code {
  background: #333;
  color: white;
}

.btn-code:hover {
  background: #6e5494;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(110, 84, 148, 0.5);
}

.btn-demo {
  background: var(--accent);
  color: white;
}

.btn-demo:hover {
  background: var(--success);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(42, 157, 143, 0.4);
}

/* ===========================
   EXPERIENCE SECTION
   =========================== */

.experience-section {
  background: var(--bg-secondary);
}

.experience-timeline {
  max-width: 900px;
  margin: 0 auto;
}

.experience-item {
  background: var(--card-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  box-shadow: 0 10px 30px var(--shadow);
  border-left: 4px solid var(--accent);
  transition: all var(--transition-base);
}

.experience-item:hover {
  transform: translateX(10px);
  box-shadow: 0 15px 40px var(--shadow);
}

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

.experience-title {
  font-size: clamp(1.3rem, 1.2rem + 0.5vw, 1.7rem);
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.experience-company {
  color: var(--success);
  font-weight: 600;
  font-size: 1.1rem;
}

.experience-date {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 0.95rem;
  white-space: nowrap;
}

.experience-description {
  color: var(--text-secondary);
  padding-left: var(--space-lg);
}

.experience-description li {
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

/* ===========================
   FOOTER
   =========================== */

.main-footer {
  background: var(--bg-secondary);
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.social-link {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  color: var(--text-primary);
  border-radius: 50%;
  text-decoration: none;
  font-size: 1.5rem;
  transition: all var(--transition-base);
  box-shadow: 0 5px 15px var(--shadow);
}

.social-link.linkedin:hover {
  background: #0077b5;
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(0, 119, 181, 0.4);
}

.social-link.github:hover {
  background: #6e5494;
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 30px rgba(110, 84, 148, 0.6);
}

.social-link.email:hover {
  background: #ea4335;
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(234, 67, 53, 0.4);
}

.social-link.twitter:hover {
  background: #000;
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-weight: 500;
}

.footer-nav a:hover {
  color: var(--accent);
}

.copyright {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  33% {
    transform: translate(30px, -30px) rotate(120deg);
  }
  66% {
    transform: translate(-20px, 20px) rotate(240deg);
  }
}

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

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 1024px) {
  .timeline::before {
    left: 40px;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-container {
    padding: 0 1rem;
    max-width: 100%;
  }

  .main-nav {
    width: 100vw;
    left: 0;
    right: 0;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    right: 0;
    flex-direction: column;
    background: var(--nav-bg);
    width: 100%;
    max-width: 100vw;
    padding: var(--space-xl);
    transition: left var(--transition-base);
    box-shadow: 0 10px 30px var(--shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .nav-links.active {
    left: 0;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 20px;
  }

  .achievement-card {
    flex-direction: column;
    text-align: center;
  }

  .achievement-icon {
    margin: 0 auto;
  }

  .experience-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .experience-date {
    white-space: normal;
  }

  .tech-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }

  * {
    max-width: 100vw;
  }

  body,
  html {
    overflow-x: hidden !important;
    max-width: 100vw !important;
  }

  section {
    overflow-x: hidden;
  }

  .section-container {
    max-width: 100%;
    overflow-x: hidden;
  }

  .hero-content {
    max-width: 100%;
    padding: 0 1rem;
  }

  .about-content,
  .tech-categories,
  .projects-grid,
  .timeline,
  .experience-timeline {
    max-width: 100%;
    overflow-x: hidden;
  }
}

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

  .hero-title {
    font-size: 2rem;
  }

  .project-actions {
    flex-direction: column;
  }

  .social-links {
    gap: var(--space-md);
  }

  .footer-nav {
    flex-direction: column;
    gap: var(--space-md);
  }

  .modal-content {
    padding: var(--space-lg);
  }

  .modal-header {
    flex-direction: column;
    text-align: center;
  }
}

/* ===========================
   REDUCED MOTION
   =========================== */

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

  .animated-bg {
    animation: none;
  }

  .particle {
    display: none;
  }
}

/* ===========================
   ACCESSIBILITY
   =========================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
}

/* Focus Visible Styles */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --shadow: rgba(0, 0, 0, 0.5);
  }

  .tech-item,
  .project-card,
  .achievement-card,
  .experience-item {
    border: 2px solid var(--text-primary);
  }
}