/* =================================
   ALAN SALVA PORTFOLIO - OPTIMIZED STYLES
   ================================= */

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");

/* =================================
   CSS CUSTOM PROPERTIES
   ================================= */
:root {
  /* Colors */
  --color-primary: #FF6B00;
  --color-primary-hover: #FF8C42;
  --color-primary-light: rgba(255, 107, 0, 0.1);
  --color-bg-dark: #1a1a1a;
  --color-bg-section: #2d2d2d;
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.8);
  --color-border: rgba(255, 255, 255, 0.2);
  --color-border-hover: rgba(255, 255, 255, 0.3);
  
  /* Layout */
  --max-width: 1200px;
  --container-padding: 1rem;
  --section-padding: 80px 0;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Typography */
  --font-family: "Poppins", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.4);
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-header: 1001;
  --z-modal: 1002;
  --z-tooltip: 1003;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-dark);
  overflow-x: hidden;
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* =================================
   ACCESSIBILITY
   ================================= */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  border-radius: 4px;
  text-decoration: none;
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =================================
   COMPONENTS
   ================================= */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
}

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

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

.btn__icon {
  font-size: var(--font-size-sm);
}

/* =================================
   NAVIGATION
   ================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(
    rgba(26, 26, 26, 0.95), 
    rgba(45, 45, 45, 0.95)
  ), url('../assets/img/banner.jpg');
  background-size: cover;
  background-position: center;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-header);
}

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

/* Brand */
.navbar__brand {
  flex-shrink: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: white;
  transition: transform var(--transition-base);
}

.brand-link:hover {
  transform: scale(1.1);
}

/* Navigation Menu */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  transition: all var(--transition-base);
}

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

.nav-icon {
  font-size: var(--font-size-sm);
  transition: transform var(--transition-base);
}

.nav-link:hover .nav-icon {
  transform: scale(1.2);
}

/* Language Switcher */
.language-switcher {
  position: relative;
  margin-right: var(--spacing-sm);
}

.lang-btn-main {
  background: transparent;
  border: 2px solid var(--color-border-hover);
  color: var(--color-text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-base);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  min-width: 70px;
  justify-content: space-between;
}

.lang-btn-main:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

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

.lang-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-dark);
  border: 2px solid var(--color-border-hover);
  border-radius: var(--border-radius-sm);
  margin-top: 5px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-lg);
}

.language-switcher:hover .lang-dropdown,
.language-switcher.active .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  transition: all var(--transition-base);
  text-align: left;
}

.lang-option:hover {
  background: var(--color-primary);
  color: white;
}

.lang-option:first-child {
  border-radius: 6px 6px 0 0;
}

.lang-option:last-child {
  border-radius: 0 0 6px 6px;
}

.lang-btn-main i {
  transition: transform var(--transition-base);
}

.language-switcher:hover .lang-btn-main i,
.language-switcher.active .lang-btn-main i {
  transform: rotate(180deg);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  transition: color var(--transition-base);
}

.mobile-menu-btn:hover {
  color: var(--color-primary);
}

.mobile-menu-input {
  display: none;
}

/* =================================
   HERO SECTION
   ================================= */
.hero-section {
  padding: 120px 0 var(--spacing-xxl);
  background: linear-gradient(
    135deg,
    rgba(26, 26, 26, 0.95) 0%, 
    rgba(45, 45, 45, 0.95) 50%,
    rgba(57, 57, 57, 0.95) 100%
  ), url('../assets/img/banner.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent, rgba(255, 107, 0, 0.1));
  pointer-events: none;
}

.hero__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.hero__greeting {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.2;
  margin: 0;
}

.hero__name {
  color: var(--color-primary);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 600px;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.hero__terminal {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* =================================
   TERMINAL COMPONENT
   ================================= */
.terminal {
  background: #1a1a1a;
  border-radius: var(--border-radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  max-width: 500px;
  width: 100%;
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 14px;
  transition: transform var(--transition-slow);
}

.terminal:hover {
  transform: translateY(-5px);
}

.terminal__header {
  background: #2d2d2d;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #404040;
}

.terminal__controls {
  display: flex;
  gap: 8px;
}

.terminal__control {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: block;
}

.terminal__control--close {
  background: #ff5f56;
}

.terminal__control--minimize {
  background: #ffbd2e;
}

.terminal__control--maximize {
  background: #27ca3f;
}

.terminal__title {
  color: #ffffff;
  font-size: 12px;
  font-weight: 500;
}

.terminal__body {
  padding: 16px;
  background: #1a1a1a;
  color: #ffffff;
  line-height: 1.6;
  font-size: 13px;
}

.terminal__line {
  margin-bottom: 8px;
}

.terminal__prompt {
  color: #27ca3f;
  font-weight: 600;
}

.terminal__command {
  color: #ffffff;
  margin-left: 8px;
}

.terminal__output {
  margin: 12px 0;
  padding-left: 0;
}

.terminal__json {
  color: #ffffff;
}

/* JSON Syntax Highlighting */
.json__bracket {
  color: #ffbd2e;
  font-weight: 600;
}

.json__key {
  color: #66d9ef;
  font-weight: 500;
}

.json__colon {
  color: #ffffff;
}

.json__string {
  color: #a6e22e;
}

.json__comma {
  color: #ffffff;
}

.terminal__cursor {
  color: #ffffff;
  animation: terminal-blink 1s infinite;
  margin-left: 4px;
}

@keyframes terminal-blink {
  0%, 50% {
    opacity: 1;
  }
  51%, 100% {
    opacity: 0;
  }
}

/* =================================
   TOOLBOX SECTION
   ================================= */
.toolbox-section {
  padding: var(--section-padding);
  background: var(--color-bg-section);
}

.toolbox__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.toolbox__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xxl);
  color: var(--color-primary);
}

.toolbox__carousel {
  overflow: hidden;
  position: relative;
  width: 100%;
}

.carousel-container {
  width: 100%;
  overflow: hidden;
}

.carousel-content {
  display: flex;
  gap: var(--spacing-xxl);
  animation: scroll 30s linear infinite;
  width: fit-content;
}

.carousel-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  height: 80px;
  background: var(--color-bg-dark);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
  cursor: pointer;
}

.carousel-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-5px);
}

.carousel-item i {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  transition: color var(--transition-base);
}

.carousel-item:hover i {
  color: var(--color-primary);
}

@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-100% + 100vw));
  }
}

.carousel-container:hover .carousel-content {
  animation-play-state: paused;
}

/* =================================
   PROJECTS SECTION
   ================================= */
.projects-section {
  padding: var(--section-padding);
  background: var(--color-bg-dark);
}

.projects__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.projects__title {
  text-align: center;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xxl);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.project-card {
  background: var(--color-bg-section);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

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

.project-card__content {
  position: relative;
  z-index: 1;
}

.project-card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

.project-card__link {
  color: var(--color-primary);
  font-weight: 600;
  transition: color var(--transition-base);
}

.project-card__link:hover {
  color: var(--color-primary-hover);
}

.loading {
  text-align: center;
  padding: var(--spacing-lg);
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

/* =================================
   FOOTER
   ================================= */
.footer {
  background: var(--color-bg-section);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  text-align: center;
}

.footer__content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  margin-bottom: var(--spacing-lg);
}

.social-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--color-bg-dark);
  border-radius: 50%;
  border: 2px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  transition: all var(--transition-base);
}

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

.footer__bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.footer__copyright {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* =================================
   ABOUT WEBSITE SECTION
   ================================= */
.about-website-section {
  padding: var(--section-padding);
  background: var(--color-bg-section);
}

.about-website__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.about-website__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.about-website__description {
  font-size: var(--font-size-lg);
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xxl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* =================================
   TIMELINE COMPONENT
   ================================= */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto var(--spacing-xxl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-hover));
}

.timeline__item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: 80px;
}

.timeline__item--current .timeline__marker {
  background: var(--color-primary);
  box-shadow: 0 0 20px rgba(255, 107, 0, 0.5);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 107, 0, 0.5);
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 107, 0, 0.8);
  }
}

.timeline__marker {
  position: absolute;
  left: 20px;
  top: 5px;
  width: 30px;
  height: 30px;
  background: var(--color-bg-dark);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.timeline__marker i {
  color: var(--color-primary);
  font-size: 12px;
}

.timeline__content {
  background: var(--color-bg-dark);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.timeline__content:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.timeline__date {
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.timeline__title {
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.timeline__description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

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

.tech-tag {
  background: rgba(255, 107, 0, 0.1);
  color: var(--color-primary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border: 1px solid rgba(255, 107, 0, 0.3);
}

/* =================================
   PROJECT STATS
   ================================= */
.project-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xxl);
  padding: var(--spacing-xl);
  background: var(--color-bg-dark);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
}

.project-stats__item {
  text-align: center;
}

.project-stats__number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.project-stats__label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* =================================
   TECH STACK GRID
   ================================= */
.tech-stack__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  text-align: center;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.tech-stack__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--color-bg-dark);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.tech-item:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.tech-item i {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.tech-item span {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
}

/* =================================
   ABOUT ME SECTION STYLES
   ================================= */
.about-me-section {
  padding: var(--section-padding);
  background: linear-gradient(135deg, var(--color-bg-section) 0%, rgba(255, 107, 0, 0.03) 100%);
  position: relative;
}

.about-me-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0.3;
}

.about-me__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.about-me__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-primary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.about-me__title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

.about-me__content {
  display: grid;
  gap: var(--spacing-xxl);
}

.about-me__intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.about-me__description {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.about-me__description::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
}

.about-me__section {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(5px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.about-me__section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.05) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.about-me__section:hover::before {
  opacity: 1;
}

.about-me__section:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.about-me__section-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  position: relative;
}

.about-me__section-title i {
  color: var(--color-primary);
  font-size: var(--font-size-xl);
  padding: var(--spacing-xs);
  background: rgba(255, 107, 0, 0.1);
  border-radius: var(--border-radius-sm);
}

/* Experience Timeline */
.experience-timeline {
  position: relative;
  padding-left: var(--spacing-lg);
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), rgba(255, 107, 0, 0.3));
}

.experience-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

.experience-item::before {
  content: '';
  position: absolute;
  left: -38px;
  top: var(--spacing-lg);
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 3px solid var(--color-bg-dark);
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.3);
}

.experience-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-border);
  transform: translateX(10px);
}

.experience-period {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(255, 107, 0, 0.1);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

.experience-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.experience-company {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.experience-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
}

.experience-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.feature-tag {
  font-size: var(--font-size-xs);
  background: rgba(255, 107, 0, 0.15);
  color: var(--color-primary);
  padding: 4px var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(255, 107, 0, 0.3);
}

/* Education Grid */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.education-item {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.education-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), rgba(255, 107, 0, 0.3));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.education-item:hover::before {
  transform: scaleX(1);
}

.education-item:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.education-period {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.education-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.education-institution {
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.education-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.skill-category {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.skill-category:hover {
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.05);
}

.skill-category-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.skill-category-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tag {
  background: rgba(255, 107, 0, 0.1);
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid rgba(255, 107, 0, 0.3);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: rgba(255, 107, 0, 0.2);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Languages Grid */
.languages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.language-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.language-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
}

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

.language-level {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.level-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  position: relative;
}

.level-indicator::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.level-native {
  background: #10B981;
}

.level-native::after {
  background: #10B981;
}

.level-advanced {
  background: var(--color-primary);
}

.level-advanced::after {
  background: var(--color-primary);
}

.level-fluent {
  background: #3B82F6;
}

.level-fluent::after {
  background: #3B82F6;
}

.level-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.5;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* =================================
   TIMELINE RESPONSIVE DESIGN
   ================================= */
@media (max-width: 768px) {
  .timeline {
    padding-left: var(--spacing-md);
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline__item {
    padding-left: 60px;
  }
  
  .timeline__marker {
    left: 20px;
    width: 24px;
    height: 24px;
  }
  
  .timeline__marker i {
    font-size: 10px;
  }
  
  .timeline__content {
    padding: var(--spacing-md);
  }
  
  .timeline__title {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 480px) {
  .timeline {
    padding-left: var(--spacing-sm);
  }
  
  .timeline::before {
    left: 15px;
    width: 1px;
  }
  
  .timeline__item {
    padding-left: 45px;
    margin-bottom: var(--spacing-lg);
  }
  
  .timeline__marker {
    left: -11px;
    width: 20px;
    height: 20px;
    border-width: 2px;
  }
  
  .timeline__marker i {
    font-size: 8px;
  }
  
  .timeline__content {
    padding: var(--spacing-sm);
  }
  
  .timeline__title {
    font-size: var(--font-size-base);
  }
  
  .timeline__date {
    font-size: var(--font-size-xs);
  }
  
  .timeline__description {
    font-size: var(--font-size-sm);
  }
  
  .tech-tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.4rem;
 }
 .experience-item::before {
    left: -25px;
  }
}

/* =================================
   ABOUT ME RESPONSIVE DESIGN
   ================================= */
@media (max-width: 768px) {
  .about-me__title {
    font-size: var(--font-size-3xl);
  }
  
  .about-me__description {
    font-size: var(--font-size-base);
    padding: var(--spacing-md);
  }
  
  .about-me__section {
    padding: var(--spacing-lg);
  }
  
  .experience-timeline {
    padding-left: var(--spacing-md);
  }
  
  .experience-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
  }
  
  .experience-item::before {
    left: -30px;
  }
  
  .education-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .languages-grid {
    grid-template-columns: 1fr;
  }
  
  .experience-features {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .about-me__section-title {
    font-size: var(--font-size-xl);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }
  
  .experience-title {
    font-size: var(--font-size-lg);
  }
  
  .skill-tags {
    justify-content: center;
  }
  
  .language-item {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xs);
  }
}