/* =========================================================
   style.css — 2KS Portfolio
   Design System, Base Styles, Components
   ========================================================= */

/* ---- 1. CSS Custom Properties (Design Tokens) ---- */
:root {
  /* Colors */
  --bg:          #05070F;
  --bg-2:        #080B18;
  --bg-card:     rgba(255, 255, 255, 0.03);
  --blue:        #3B82F6;
  --cyan:        #00D4FF;
  --violet:      #7C3AED;
  --white:       #FFFFFF;
  --gray:        #8B99B5;
  --gray-dark:   #1A1F35;

  /* Glassmorphism */
  --glass-bg:     rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur:   20px;

  /* Glows */
  --glow-blue:   0 0 30px rgba(59, 130, 246, 0.35);
  --glow-cyan:   0 0 30px rgba(0, 212, 255, 0.35);
  --glow-violet: 0 0 30px rgba(124, 58, 237, 0.35);

  /* Gradients */
  --grad-blue-cyan:   linear-gradient(135deg, var(--blue), var(--cyan));
  --grad-cyan-violet: linear-gradient(135deg, var(--cyan), var(--violet));
  --grad-all:         linear-gradient(135deg, var(--blue), var(--cyan), var(--violet));

  /* Typography */
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --section-pad: 120px;

  /* Transitions */
  --transition-fast:   0.2s ease;
  --transition-med:    0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow:   0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Border radius */
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;
}

/* ---- 2. Reset & Base ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Fallback cursor for touch devices */
@media (hover: none) {
  body { cursor: auto; }
  .cursor, .cursor-follower { display: none; }
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-body); }



/* ---- 4. Utilities ---- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
}

.gradient-text {
  background: var(--grad-blue-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section {
  padding: var(--section-pad) 0;
  position: relative;
  overflow: hidden;
}

/* ---- 5. Section Headers ---- */
.section-header {
  text-align: center;
  margin-bottom: 70px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  opacity: 0.7;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1rem;
  color: var(--gray);
  max-width: 480px;
  margin: 0 auto;
}

/* ---- 6. Reveal Animations (set by JS) ---- */
.reveal,
.reveal-left,
.reveal-right {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left {
  transform: translateX(-50px);
}

.reveal-right {
  transform: translateX(50px);
}

.reveal.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translate(0);
}

/* ---- 7. Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 24px 0;
  transition: padding var(--transition-med), background var(--transition-med),
              backdrop-filter var(--transition-med), box-shadow var(--transition-med);
}

.navbar.scrolled {
  padding: 14px 0;
  background: rgba(5, 7, 15, 0.7);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: 0 1px 0 var(--glass-border), 0 8px 32px rgba(0,0,0,0.4);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 40px;
}

/* Logo */
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.logo-bracket {
  color: var(--cyan);
  opacity: 0.7;
}

.logo-text {
  background: var(--grad-blue-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding: 0 2px;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  overflow: hidden;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 1px;
  background: var(--grad-blue-cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-med);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Nav CTA */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 212, 255, 0.3);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cyan);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.nav-cta:hover {
  border-color: var(--cyan);
  color: var(--white);
  box-shadow: var(--glow-cyan);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}

.ham-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition-med), opacity var(--transition-fast);
}

.hamburger.open .ham-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .ham-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .ham-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- 8. Buttons ---- */
.btn-glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--radius-xl);
  background: var(--grad-blue-cyan);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 0 0 rgba(0, 212, 255, 0);
  transition: box-shadow var(--transition-med), transform var(--transition-fast);
}

.btn-primary:hover {
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.4), 0 8px 32px rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
}

.btn-primary:hover .btn-glow { opacity: 1; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
  color: var(--gray);
  font-weight: 600;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  border-color: rgba(59, 130, 246, 0.5);
  color: var(--white);
  transform: translateY(-2px);
}

/* Magnetic button effect wrapper */
.magnetic-btn {
  will-change: transform;
}

/* ---- 9. Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 100px;
}

/* Canvas background */
.particles-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Grid background */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.5) 40%, transparent 80%);
}

/* Halos */
.hero-halo {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-halo-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
  top: -100px;
  right: 10%;
}

.hero-halo-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
  bottom: -200px;
  left: -100px;
}

.hero-halo-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  top: 30%;
  left: 20%;
}

/* Scan line */
.hero-scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.3;
  animation: scan-line 6s ease-in-out infinite;
  z-index: 0;
}

/* Hero layout */
.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

/* Hero content (left) */
.hero-content {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-xl);
  width: fit-content;
  animation: fade-in-up 0.8s ease both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #22C55E;
  border-radius: 50%;
  box-shadow: 0 0 10px #22C55E;
  animation: glow-pulse 2s ease-in-out infinite;
}

.badge-text {
  font-size: 0.8rem;
  color: var(--cyan);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* Hero name */
.hero-name {
  line-height: 1;
  animation: fade-in-up 0.8s 0.2s ease both;
}

.name-glow {
  display: block;
  font-size: clamp(5rem, 10vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #fff 30%, var(--cyan) 60%, var(--blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  position: relative;
  filter: drop-shadow(0 0 40px rgba(0, 212, 255, 0.4));
}

/* Hero subtitle */
.hero-subtitle-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  animation: fade-in-up 0.8s 0.35s ease both;
}

.subtitle-line {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--grad-blue-cyan);
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--cyan);
  min-height: 1.6em;
  letter-spacing: 0.02em;
}

/* Hero description */
.hero-desc {
  font-size: 1rem;
  color: var(--gray);
  line-height: 1.7;
  max-width: 480px;
  animation: fade-in-up 0.8s 0.5s ease both;
}

/* Hero actions */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  animation: fade-in-up 0.8s 0.65s ease both;
}

/* Hero socials */
.hero-socials {
  display: flex;
  align-items: center;
  gap: 16px;
  animation: fade-in-up 0.8s 0.8s ease both;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  color: var(--gray);
  transition: color var(--transition-fast), border-color var(--transition-fast),
              box-shadow var(--transition-fast), transform var(--transition-fast);
  background: var(--glass-bg);
}

.social-link:hover {
  color: var(--cyan);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}

/* Hero scene (right) */
.hero-scene {
  position: relative;
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in 1.2s 0.5s ease both;
}

.network-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Floating stat cards */
.float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  z-index: 2;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.float-card:hover {
  transform: translateY(-4px) scale(1.02) !important;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 212, 255, 0.1);
}

.float-card-1 {
  top: 40px;
  right: 20px;
  animation: float-1 5s ease-in-out infinite;
}

.float-card-2 {
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  animation: float-2 6s ease-in-out infinite;
}

.float-card-3 {
  bottom: 60px;
  right: 40px;
  animation: float-3 4.5s ease-in-out infinite;
}

.float-card-4 {
  bottom: 40px;
  left: 20px;
  animation: float-4 5.5s ease-in-out infinite;
}

.fc-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(0, 212, 255, 0.08);
  flex-shrink: 0;
}

.tech-stack-icon {
  width: auto;
  background: none;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  max-width: 100px;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--cyan);
}

.fc-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.fc-value {
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--grad-blue-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.fc-label {
  font-size: 0.72rem;
  color: var(--gray);
  white-space: nowrap;
}

/* Scene orbs */
.scene-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.scene-orb-1 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
  top: 20%;
  right: 10%;
  animation: orb-drift-1 8s ease-in-out infinite;
}

.scene-orb-2 {
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  bottom: 20%;
  left: 10%;
  animation: orb-drift-2 10s ease-in-out infinite;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--gray);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  animation: fade-in 2s 1.5s ease both;
  z-index: 2;
}

.scroll-mouse {
  width: 22px;
  height: 34px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 3px;
  height: 6px;
  background: var(--cyan);
  border-radius: 2px;
  animation: scroll-wheel 2s ease-in-out infinite;
}

/* ---- 10. About Section ---- */
.about {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  align-items: start;
}

/* Avatar */
.about-avatar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  position: sticky;
  top: 120px;
}

.avatar-wrapper {
  position: relative;
  width: 200px;
  height: 200px;
}

.avatar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid transparent;
}

.avatar-ring-1 {
  inset: -12px;
  border-image: var(--grad-blue-cyan) 1;
  animation: ring-rotate 8s linear infinite;
  border-radius: 50%;
  border: 1px solid transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box,
              var(--grad-blue-cyan) border-box;
}

.avatar-ring-2 {
  inset: -24px;
  background: linear-gradient(var(--bg), var(--bg)) padding-box,
              var(--grad-cyan-violet) border-box;
  border: 1px solid transparent;
  animation: ring-rotate 12s linear infinite reverse;
  opacity: 0.5;
}

.avatar-core {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.3);
  background: var(--bg-2);
  z-index: 1;
}

.avatar-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.avatar-orbit {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  animation: orbit 6s linear infinite;
  z-index: 2;
}

.orbit-dot {
  width: 10px;
  height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 15px var(--cyan);
}

.avatar-info {
  text-align: center;
}

.avatar-alias {
  color: var(--gray);
  font-size: 0.9rem;
}

.avatar-alias strong {
  color: var(--white);
}

.avatar-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.8rem;
  color: #22C55E;
  margin-top: 6px;
}

.status-dot {
  width: 7px;
  height: 7px;
  background: #22C55E;
  border-radius: 50%;
  box-shadow: 0 0 8px #22C55E;
  animation: glow-pulse 2s ease-in-out infinite;
}

/* About cards */
.about-cards-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.about-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-med), border-color var(--transition-med);
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--grad-blue-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-med);
}

.about-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.2);
}

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

.about-card:hover .about-card-glow {
  opacity: 1;
}

.about-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 212, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  margin-bottom: 16px;
}

.about-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.about-card p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.65;
}

.about-card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-med);
  pointer-events: none;
}

/* ---- 11. Skills ---- */
.skills {
  position: relative;
}

.skills::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  position: relative;
  transform-style: preserve-3d;
  will-change: transform;
}

.skill-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
}

.skill-card-inner {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.skill-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  transition: transform var(--transition-fast);
}

.skill-card:hover .skill-icon {
  transform: scale(1.1) rotate(-5deg);
}

.skill-name {
  font-size: 1rem;
  font-weight: 600;
}

.skill-desc {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.5;
  flex: 1;
}

.skill-level {
  margin-top: auto;
}

.skill-bar {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: var(--grad-blue-cyan);
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

.skill-card.visible .skill-fill {
  width: var(--skill-width);
}

.skill-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at bottom right, rgba(var(--skill-color, 0, 212, 255), 0.07) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-med);
  pointer-events: none;
}

.skill-card:hover .skill-glow {
  opacity: 1;
}

/* ---- 12. Services ---- */
.services {
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-blue-cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-med);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 30px rgba(0, 212, 255, 0.05);
}

.service-card:hover::after {
  transform: scaleX(1);
}

.service-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.04);
  position: absolute;
  top: 20px;
  right: 24px;
  line-height: 1;
  user-select: none;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
  background: rgba(0, 212, 255, 0.1);
}

.service-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.65;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  font-size: 0.8rem;
  color: var(--gray);
  padding-left: 16px;
  position: relative;
}

.service-features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-size: 0.75rem;
}

.service-line {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(0, 212, 255, 0.04) 0%, transparent 50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-med);
}

.service-card:hover .service-line {
  opacity: 1;
}

/* ---- 13. Projects ---- */
.projects-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 22px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  transition: all var(--transition-fast);
  cursor: none;
}

.filter-btn:hover, .filter-btn.active {
  background: var(--grad-blue-cyan);
  color: var(--bg);
  border-color: transparent;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.25);
  font-weight: 600;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* 2-card centered variant */
.projects-grid-2col {
  max-width: 900px;
  margin: 0 auto;
}

.project-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
  position: relative;
}

.project-card.filtered-out {
  display: none;
}

.project-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 212, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.15);
}

.project-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

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

.project-card:hover .project-img-wrap img {
  transform: scale(1.07);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 7, 15, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-med);
}

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

.project-overlay-content {
  transform: translateY(10px);
  transition: transform var(--transition-med);
}

.project-card:hover .project-overlay-content {
  transform: translateY(0);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  background: var(--grad-blue-cyan);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.875rem;
  transition: box-shadow var(--transition-fast);
}

.project-link:hover {
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}

.project-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.project-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tech-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--blue);
  letter-spacing: 0.05em;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 600;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.6;
}

.project-actions {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.project-btn {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.project-btn-primary {
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--cyan);
}

.project-btn-primary:hover {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.project-btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--gray);
}

.project-btn-secondary:hover {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ---- 14. Timeline ---- */
.timeline {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

.timeline-track {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

/* Central line */
.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(-50%);
  z-index: 0;
}

.timeline-line-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--grad-blue-cyan);
  height: 0%;
  transition: height 0.5s ease;
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

/* Timeline items */
.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 50px;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.timeline-left {
  flex-direction: row-reverse;
  text-align: right;
}

.timeline-right {
  flex-direction: row;
  text-align: left;
}

/* Dot */
.timeline-dot {
  position: absolute;
  left: 50%;
  top: 20px;
  transform: translateX(-50%);
  z-index: 2;
  flex-shrink: 0;
}

.dot-inner {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--blue);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.timeline-item.visible .dot-inner {
  border-color: var(--cyan);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

.dot-active .dot-inner {
  background: var(--cyan) !important;
  border-color: var(--cyan) !important;
}

.dot-pulse {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.4);
  animation: dot-pulse 2s ease-in-out infinite;
}

/* Timeline card */
.timeline-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: calc(50% - 50px);
  position: relative;
  transition: border-color var(--transition-med), box-shadow var(--transition-med);
}

.timeline-left .timeline-card {
  margin-right: auto;
}

.timeline-right .timeline-card {
  margin-left: auto;
}

.timeline-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.05);
}

.timeline-card-active {
  border-color: rgba(0, 212, 255, 0.2);
  background: rgba(0, 212, 255, 0.03);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 8px;
}

.timeline-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.6;
}

.timeline-icon {
  position: absolute;
  top: 20px;
  right: 20px;
  color: rgba(0, 212, 255, 0.2);
}

.timeline-left .timeline-icon {
  right: auto;
  left: 20px;
}

/* ---- 15. Contact ---- */
.contact {
  position: relative;
  overflow: hidden;
}

.contact-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.contact-blob-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  animation: blob-drift-1 12s ease-in-out infinite;
}

.contact-blob-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
  bottom: -200px;
  left: -100px;
  animation: blob-drift-2 15s ease-in-out infinite;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
  position: relative;
  z-index: 1;
}

/* Contact info cards */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 20px;
}

.contact-info-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
}

.contact-info-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--grad-blue-cyan);
  transform: scaleY(0);
  transition: transform var(--transition-med);
  border-radius: 2px;
}

.contact-info-card:hover {
  transform: translateX(6px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--glow-cyan);
}

.contact-info-card:hover::before {
  transform: scaleY(1);
}

.cic-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.contact-info-card:hover .cic-icon {
  transform: rotate(-10deg) scale(1.1);
}

.cic-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cic-label {
  font-size: 0.75rem;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.cic-value {
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.cic-arrow {
  color: var(--gray);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.contact-info-card:hover .cic-arrow {
  transform: translateX(4px);
  color: var(--cyan);
}

.contact-availability {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 24px;
  background: rgba(34, 197, 94, 0.05);
  border: 1px solid rgba(34, 197, 94, 0.15);
  border-radius: var(--radius-md);
}

.avail-dot {
  width: 10px;
  height: 10px;
  background: #22C55E;
  border-radius: 50%;
  box-shadow: 0 0 12px #22C55E;
  flex-shrink: 0;
  animation: glow-pulse 2s ease-in-out infinite;
}

.avail-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.avail-text strong {
  font-size: 0.9rem;
  color: #22C55E;
}

.avail-text span {
  font-size: 0.8rem;
  color: var(--gray);
}

/* Contact form */
.contact-form {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.3);
}

.form-glow-border {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, transparent 40%, rgba(124, 58, 237, 0.05) 100%);
  pointer-events: none;
}

.form-group {
  position: relative;
}

.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px 0 10px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--white);
  outline: none;
  transition: all var(--transition-fast);
  border-radius: 0;
  -webkit-appearance: none;
}

.form-input:focus {
  border-bottom-color: var(--cyan);
}

.form-select {
  cursor: none;
}

.form-select option {
  background: #0d1020;
  color: var(--white);
}

.form-textarea {
  resize: none;
  line-height: 1.6;
  min-height: 120px;
}

.form-label {
  position: absolute;
  top: 14px;
  left: 0;
  font-size: 0.9rem;
  color: var(--gray);
  transition: all var(--transition-fast);
  pointer-events: none;
}

/* Float label animation */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: -8px;
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 0.05em;
}

.form-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--grad-blue-cyan);
  transition: width var(--transition-med);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}

.form-input:focus ~ .form-line {
  width: 100%;
}

.form-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 32px;
  border-radius: var(--radius-xl);
  background: var(--grad-blue-cyan);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition-med), transform var(--transition-fast);
  margin-top: 8px;
  cursor: none;
}

.form-submit:hover {
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.4);
  transform: translateY(-2px);
}

.form-success {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--cyan);
}

.form-success.show {
  display: flex;
  animation: fade-in 0.4s ease;
}

/* ---- 16. Footer ---- */
.footer {
  position: relative;
  padding: 80px 0 0;
  background: var(--bg-2);
  overflow: hidden;
}

.footer-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: var(--grad-blue-cyan);
  opacity: 0.3;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 60px;
  align-items: start;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  display: block;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--gray);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--gray);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.footer-socials {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
}

.footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  color: var(--gray);
  background: var(--glass-bg);
  transition: all var(--transition-fast);
}

.footer-social:hover {
  color: var(--cyan);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}

.footer-divider {
  height: 1px;
  background: var(--glass-border);
  margin-bottom: 28px;
}

.footer-bottom {
  padding-bottom: 40px;
}

.footer-bottom-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy, .footer-made {
  font-size: 0.8rem;
  color: var(--gray);
}

.heart {
  color: #EF4444;
  animation: heartbeat 1.5s ease-in-out infinite;
}