/* ===========================
   DESIGN SYSTEM & VARIABLES
   =========================== */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap");

:root {
  /* Colors */
  --bg-primary: #0b1f3a;
  --bg-secondary: #0f2a4a;
  --bg-card: rgba(15, 42, 74, 0.6);
  --bg-glass: rgba(15, 42, 74, 0.4);
  --accent: #00d4ff;
  --accent-alt: #0090ff;
  --accent-glow: rgba(0, 212, 255, 0.3);
  --accent-glow-strong: rgba(0, 212, 255, 0.5);
  --text-primary: #e8f0fe;
  --text-secondary: rgba(232, 240, 254, 0.7);
  --text-muted: rgba(232, 240, 254, 0.4);
  --border-color: rgba(0, 212, 255, 0.15);
  --border-hover: rgba(0, 212, 255, 0.4);
  --success: #00e676;
  --error: #ff5252;

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  --fs-4xl: 2.75rem;
  --fs-5xl: 3.5rem;
  --fs-hero: clamp(2.5rem, 6vw, 4.5rem);

  /* Spacing */
  --section-padding: 100px 0;
  --container-width: 1200px;
  --gap: 2rem;

  /* Effects */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 16px;
  --border-radius-sm: 10px;
  --border-radius-xs: 6px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #005088, var(--accent-alt));
  border-radius: 10px;
  border: 3px solid var(--bg-primary); 
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent-alt), var(--accent));
  border: 2px solid var(--bg-primary); 
}

/* Scroll Progress Bar */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  z-index: 9999;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--accent-glow);
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--accent-alt);
}

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

ul {
  list-style: none;
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  outline: none;
}

section {
  padding: var(--section-padding);
  position: relative;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===========================
   ANIMATIONS
   =========================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulseGlow {
  0%,
  100% {
    box-shadow:
      0 0 20px var(--accent-glow),
      0 0 40px rgba(0, 212, 255, 0.1);
  }
  50% {
    box-shadow:
      0 0 30px var(--accent-glow-strong),
      0 0 60px rgba(0, 212, 255, 0.2);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

@keyframes typewriter {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  0%,
  100% {
    border-right-color: var(--accent);
  }
  50% {
    border-right-color: transparent;
  }
}

@keyframes slideInTimeline {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes iconFloat {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-5px) rotate(2deg);
  }
  75% {
    transform: translateY(5px) rotate(-2deg);
  }
}

@keyframes glowPulse {
  0%,
  100% {
    filter: drop-shadow(0 0 6px var(--accent-glow));
  }
  50% {
    filter: drop-shadow(0 0 14px var(--accent-glow-strong));
  }
}

/* Scroll animation classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.7s ease-out,
    transform 0.7s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll.from-left {
  transform: translateX(-40px);
}

.animate-on-scroll.from-left.visible {
  transform: translateX(0);
}

.animate-on-scroll.from-right {
  transform: translateX(40px);
}

.animate-on-scroll.from-right.visible {
  transform: translateX(0);
}

/* Stagger delays */
.delay-1 {
  transition-delay: 0.1s;
}
.delay-2 {
  transition-delay: 0.2s;
}
.delay-3 {
  transition-delay: 0.3s;
}
.delay-4 {
  transition-delay: 0.4s;
}
.delay-5 {
  transition-delay: 0.5s;
}
.delay-6 {
  transition-delay: 0.6s;
}
.delay-7 {
  transition-delay: 0.7s;
}
.delay-8 {
  transition-delay: 0.8s;
}

/* ===========================
   NAVIGATION
   =========================== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

#navbar.scrolled {
  background: rgba(11, 31, 58, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent-glow);
}

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

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

/* Nav Right */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}


/* Language Toggle */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.lang-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

/* Assuming .footer-link:hover would be here based on the instruction's context */
/* The instruction implies .footer-link:hover exists, but it's not in the provided content.
   Inserting the new classes after the closest logical point based on the instruction's snippet,
   which is before .lang-toggle svg and after .lang-toggle:hover. */

.lang-toggle svg {
  opacity: 0.7;
  transition: var(--transition);
}

.lang-toggle:hover svg {
  opacity: 1;
  color: var(--accent);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.hamburger span {
  width: 28px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 4px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(11, 31, 58, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 32px;
  opacity: 0;
  transition: var(--transition-slow);
}

.mobile-menu.active {
  display: flex;
  opacity: 1;
}

.mobile-menu a {
  color: var(--text-primary);
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: var(--transition);
}

.mobile-menu a:hover {
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
}

/* ===========================
   HERO SECTION
   =========================== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

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

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(
      ellipse at 30% 50%,
      rgba(0, 144, 255, 0.08) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse at 70% 30%,
      rgba(0, 212, 255, 0.06) 0%,
      transparent 50%
    );
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  width: 100%;
  padding: 0 24px;
  gap: 40px;
}

.hero-text-container {
  flex: 1;
  max-width: 600px;
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: var(--fs-sm);
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 28px;
  margin-left: 0;
  backdrop-filter: blur(10px);
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow-strong);
  animation: pulseGlow 2s infinite;
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -2px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-support {
  font-size: var(--fs-base);
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.6;
  font-weight: 500;
  animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

/* Image Container */
.hero-image-container {
  flex: 1;
  max-width: 450px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: float 6s ease-in-out infinite, fadeInUp 1s ease-out 0.4s both;
}

.hero-image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, var(--accent-glow-strong) 0%, transparent 70%);
  filter: blur(40px);
  z-index: -1;
  animation: pulseGlow 4s ease-in-out infinite alternate;
}

.hero-image {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--border-color);
  box-shadow: 0 0 30px var(--accent-glow);
  position: relative;
  z-index: 2;
  transition: var(--transition-slow);
}

.hero-image:hover {
  border-color: var(--accent);
  box-shadow: 0 0 50px var(--accent-glow-strong);
  transform: scale(1.02);
}



/* Buttons */
.btn-primary {
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: var(--bg-primary);
  font-weight: 600;
  font-size: var(--fs-base);
  border-radius: 50px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary::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: 0.5s;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  padding: 14px 32px;
  background: transparent;
  color: var(--accent);
  font-weight: 600;
  font-size: var(--fs-base);
  border-radius: 50px;
  border: 1.5px solid var(--accent);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
}



/* ===========================
   SECTION HEADERS
   =========================== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  font-size: var(--fs-sm);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-weight: 600;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: var(--fs-4xl);
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

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

/* ===========================
   ABOUT SECTION
   =========================== */
#about {
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.9;
}

.about-text p:first-of-type::first-line {
  color: var(--text-primary);
  font-weight: 500;
}

.about-icon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.about-icon-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.about-icon-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.1);
}

.about-icon-card i {
  font-size: 40px;
  display: block;
  color: var(--accent);
  margin: 0 auto 18px;
  filter: drop-shadow(0 0 8px var(--accent-glow));
  animation: iconFloat 4s ease-in-out infinite;
}

.about-icon-card:nth-child(2) i {
  animation-delay: 0.5s;
}
.about-icon-card:nth-child(3) i {
  animation-delay: 1s;
}
.about-icon-card:nth-child(4) i {
  animation-delay: 1.5s;
}

.about-icon-card h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.about-icon-card p {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* ===========================
   EXPERIENCE SECTION
   =========================== */
#experience {
  background: var(--bg-secondary);
}

.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--accent),
    var(--accent-alt),
    transparent
  );
  border-radius: 2px;
  box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -47px;
  top: 24px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-secondary);
  box-shadow:
    0 0 15px var(--accent-glow-strong),
    0 0 30px var(--accent-glow);
  z-index: 1;
}

.timeline-dot-current {
  background: var(--accent-glow-strong);
  box-shadow: 
    0 0 20px var(--accent-glow-strong),
    0 0 40px var(--accent-glow);
  animation: dotPulse 2s infinite ease-in-out;
}

@keyframes dotPulse {
  0% { transform: scale(1); box-shadow: 0 0 15px var(--accent-glow-strong); }
  50% { transform: scale(1.2); box-shadow: 0 0 25px var(--accent-glow-strong), 0 0 40px var(--accent); }
  100% { transform: scale(1); box-shadow: 0 0 15px var(--accent-glow-strong); }
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 32px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.timeline-card:hover {
  border-color: var(--border-hover);
  transform: translateX(8px);
  box-shadow: 0 8px 40px rgba(0, 212, 255, 0.08);
}

.timeline-company {
  font-size: var(--fs-sm);
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
  display: inline-block;
  vertical-align: middle;
}

.timeline-current-tag {
  display: inline-block;
  vertical-align: middle;
  background: rgba(0, 212, 255, 0.15);
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 12px;
  margin-left: 12px;
  margin-bottom: 8px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  letter-spacing: 1px;
}

.timeline-role {
  font-size: var(--fs-2xl);
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.timeline-date {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  opacity: 0.9;
  margin-bottom: 16px;
}

.timeline-date i {
  color: var(--accent);
  font-size: 14px;
}

.timeline-description {
  color: var(--text-secondary);
  font-size: var(--fs-base);
  line-height: 1.8;
}

.timeline-actions {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
}

.cert-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--accent);
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 20px;
  text-decoration: none;
  transition: var(--transition);
}

.cert-btn i {
  font-size: 14px;
}

.cert-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--border-hover);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.15);
  transform: translateY(-2px);
}

/* ===========================
   PROJECTS SECTION
   =========================== */
#projects {
  background: linear-gradient(
    180deg,
    var(--bg-secondary) 0%,
    var(--bg-primary) 100%
  );
}

.projects-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 36px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  flex: 1 1 calc(50% - 16px);
  max-width: calc(50% - 16px);
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-8px);
  box-shadow:
    0 20px 60px rgba(0, 212, 255, 0.1),
    0 0 40px rgba(0, 212, 255, 0.05);
}

.project-card:hover::before {
  opacity: 1;
}

.project-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-sm);
  background: rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--transition);
}

.project-card:hover .project-icon {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 20px var(--accent-glow);
}

.project-icon svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.project-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
  line-height: 1.3;
}

.project-description {
  color: var(--text-secondary);
  font-size: var(--fs-base);
  margin-bottom: 28px;
  line-height: 1.8;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.project-tag {
  padding: 4px 12px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 50px;
  font-size: var(--fs-xs);
  color: var(--accent);
  font-weight: 500;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: var(--fs-sm);
  transition: var(--transition);
}

.project-link svg {
  width: 18px;
  height: 18px;
  transition: var(--transition);
}

.project-link:hover {
  gap: 12px;
}

.project-link:hover svg {
  transform: translateX(2px);
}

/* ===========================
   BEHIND THE SCENES
   =========================== */
#behind-the-scenes {
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 50%,
    var(--bg-primary) 100%
  );
}

.pipeline-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 960px;
  margin: 0 auto;
  flex-wrap: nowrap;
}

.pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  transition: var(--transition);
  flex: 1 1 0;
  min-width: 140px;
  max-width: 200px;
}

.pipeline-step:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow:
    0 16px 48px rgba(0, 212, 255, 0.12),
    0 0 30px rgba(0, 212, 255, 0.05);
}

.pipeline-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
  transition: var(--transition);
}

.pipeline-step:hover .pipeline-icon {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 24px var(--accent-glow);
  border-color: var(--accent);
}

.pipeline-step h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.pipeline-step p {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  line-height: 1.5;
}

.pipeline-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  color: var(--accent);
  opacity: 0.4;
  flex-shrink: 0;
}

/* ===========================
   SKILLS SECTION
   =========================== */
#skills {
  background: var(--bg-primary);
}

.skills-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 32px 28px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.skill-category:hover {
  border-color: var(--border-hover);
  box-shadow: 0 12px 48px rgba(0, 212, 255, 0.08);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
}

.category-icon-wrap {
  width: 42px;
  height: 42px;
  border-radius: var(--border-radius-sm);
  background: rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.category-header h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: -0.3px;
}

.category-icons {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 16px;
}

.skill-icon-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius-sm);
  background: rgba(11, 31, 58, 0.6);
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: default;
  position: relative;
  margin: 0 auto;
}

.skill-icon-item i {
  font-size: 32px;
  display: block;
  transition: var(--transition);
}

.skill-icon-item svg,
.skill-icon-item img {
  color: var(--accent);
  transition: var(--transition);
}

.skill-icon-item:hover {
  border-color: var(--border-hover);
  background: rgba(0, 212, 255, 0.06);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.12);
}

.skill-icon-item:hover i,
.skill-icon-item:hover svg,
.skill-icon-item:hover img {
  filter: drop-shadow(0 0 10px var(--accent-glow-strong));
  transform: scale(1.1);
}


/* Tooltip */
.skill-icon-item[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.8);
  padding: 5px 10px;
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid var(--border-hover);
  border-radius: var(--border-radius-xs);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.skill-icon-item[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ===========================
   CONTACT SECTION
   =========================== */
#contact {
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
}

.contact-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 48px;
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 24px;
  position: relative;
}

.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  transition: var(--transition);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(11, 31, 58, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-xs);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--fs-base);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow:
    0 0 0 3px rgba(0, 212, 255, 0.1),
    0 0 20px rgba(0, 212, 255, 0.05);
}

.form-group input:focus + label,
.form-group textarea:focus + label {
  color: var(--accent);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-submit-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: var(--bg-primary);
  font-weight: 700;
  font-size: var(--fs-base);
  border-radius: var(--border-radius-xs);
  transition: var(--transition);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}

.form-submit-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: 0.5s;
}

.form-submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.form-submit-btn:hover:not(:disabled)::before {
  left: 100%;
}

.form-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
}

.form-toast {
  display: none;
  margin-top: 16px;
  padding: 14px 20px;
  background: rgba(0, 230, 118, 0.12);
  border: 1px solid rgba(0, 230, 118, 0.3);
  border-radius: var(--border-radius-xs);
  color: var(--success);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-align: center;
  animation: fadeInUp 0.4s ease-out;
}

.form-toast.show {
  display: block;
}

.form-toast.error {
  background: rgba(255, 82, 82, 0.12);
  border-color: rgba(255, 82, 82, 0.3);
  color: var(--error);
}

.form-helper {
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: 16px;
  font-weight: 400;
}

/* ===========================
   FOOTER
   =========================== */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0;
  position: relative;
  overflow: hidden;
}

.footer-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 40px var(--accent-glow-strong);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.footer-link svg {
  width: 20px;
  height: 20px;
}



.footer-text {
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

/* ===========================
   LINE DECORATION
   =========================== */
.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  border-radius: 3px;
  margin: 0 auto 24px;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ===========================
   i18n TRANSITIONS
   =========================== */
.lang-transitioning [data-i18n],
.lang-transitioning [data-i18n-html] {
  transition: opacity 0.3s ease;
}