/* ═══════════════════════════════════════════════════════
   Mohammed Rzgar Ahmed — Developer Portfolio
   style.css  |  Neon Developer Aesthetic
═══════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─── */
:root {
  /* Dark Mode (default) */
  --bg-primary:    #050c1a;
  --bg-secondary:  #0a1628;
  --bg-card:       rgba(14, 28, 56, 0.65);
  --bg-glass:      rgba(10, 22, 44, 0.55);

  --text-primary:   #e8f4fd;
  --text-secondary: #94afc8;
  --text-muted:     #506070;

  --accent:        #0ea5e9;   /* Electric blue */
  --accent-cyan:   #06b6d4;   /* Cyan */
  --accent-bright: #38bdf8;
  --accent-deep:   #0284c7;

  --glow-sm:  0 0 8px rgba(14,165,233,0.4);
  --glow-md:  0 0 18px rgba(14,165,233,0.45);
  --glow-lg:  0 0 40px rgba(14,165,233,0.35);
  --glow-xl:  0 0 80px rgba(14,165,233,0.25);

  --border:    rgba(14,165,233,0.18);
  --border-hover: rgba(14,165,233,0.5);

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full: 9999px;

  --font-display: 'Syne', sans-serif;
  --font-mono:    'Space Mono', monospace;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --nav-h: 70px;
}

/* ─── LIGHT MODE OVERRIDES ─── */
@media (prefers-color-scheme: light) {
  :root {
    --bg-primary:    #f0f6ff;
    --bg-secondary:  #e4eeff;
    --bg-card:       rgba(255,255,255,0.75);
    --bg-glass:      rgba(255,255,255,0.6);

    --text-primary:   #0f1f3a;
    --text-secondary: #3a567a;
    --text-muted:     #7a95b0;

    --accent:        #0284c7;
    --accent-cyan:   #0891b2;
    --accent-bright: #0ea5e9;
    --accent-deep:   #075985;

    --glow-sm:  0 0 6px rgba(2,132,199,0.2);
    --glow-md:  0 0 14px rgba(2,132,199,0.2);
    --glow-lg:  0 0 28px rgba(2,132,199,0.15);
    --glow-xl:  0 0 60px rgba(2,132,199,0.1);

    --border:    rgba(2,132,199,0.15);
    --border-hover: rgba(2,132,199,0.4);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

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

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

/* ─── SCROLL PROGRESS BAR ─── */
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-cyan));
  z-index: 9999;
  box-shadow: var(--glow-sm);
  transition: width 0.1s linear;
}

/* ─── PARTICLE CANVAS ─── */
#particle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

/* ─── LOADER ─── */
#loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; }

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

.loader-ring {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-right-color: var(--accent-cyan);
  animation: spin 1s linear infinite;
  box-shadow: var(--glow-md);
}

.loader-text {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.loader-text span { color: var(--accent-cyan); }

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── NAVIGATION ─── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(5, 12, 26, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

@media (prefers-color-scheme: light) {
  #navbar { background: rgba(240, 246, 255, 0.8); }
}

#navbar.scrolled {
  box-shadow: 0 4px 30px rgba(14,165,233,0.08);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: var(--glow-sm);
  letter-spacing: 0.05em;
  transition: var(--transition);
}
.nav-logo:hover { text-shadow: var(--glow-md); }

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-size: 0.78rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 2px;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  box-shadow: var(--glow-sm);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}
.nav-toggle span {
  display: block;
  width: 100%; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── SECTIONS ─── */
.section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Section headers */
.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ─── GLASS EFFECT ─── */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  font-weight: 700;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-cyan));
  color: #fff;
  box-shadow: 0 4px 20px rgba(14,165,233,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(14,165,233,0.55);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  box-shadow: inset 0 0 0 0 var(--accent);
}
.btn-secondary:hover {
  background: rgba(14,165,233,0.1);
  box-shadow: var(--glow-sm), 0 0 0 1px var(--accent);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

/* ══════════════════════════════════════════════════════
   HERO SECTION
══════════════════════════════════════════════════════ */
.hero-section {
  min-height: 100vh;
  padding-top: calc(var(--nav-h) + 60px);
  padding-bottom: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 4rem;
  align-items: center;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(6, 182, 212, 0.3);
  background: rgba(6, 182, 212, 0.07);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent-cyan); }
  50% { opacity: 0.5; box-shadow: 0 0 14px var(--accent-cyan); }
}

/* Name */
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 0.6rem;
}

.hero-name .accent {
  color: var(--accent);
  text-shadow: var(--glow-md);
}

/* Title */
.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 2vw, 1rem);
  color: var(--text-secondary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* Typing line */
.hero-typing-wrapper {
  display: flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.8vw, 0.95rem);
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
  min-height: 1.6rem;
}

.hero-static {
  color: var(--text-muted);
}

.cursor {
  display: inline-block;
  width: 2px;
  color: var(--accent);
  animation: blink 1s step-end infinite;
  margin-left: 1px;
}

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

/* Intro */
.hero-intro {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.8;
}

/* CTA */
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 3rem;
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  text-shadow: var(--glow-sm);
  line-height: 1;
}

.stat-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* ─── AVATAR ─── */
.hero-avatar-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-orbit {
  position: absolute;
  inset: -40px;
  pointer-events: none;
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed var(--border);
  animation: orbit-rotate 20s linear infinite;
}

.ring-1 {
  inset: 10px;
  animation-duration: 18s;
}
.ring-2 {
  inset: -10px;
  animation-duration: 28s;
  animation-direction: reverse;
  border-color: rgba(6,182,212,0.12);
}

.orbit-dot {
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: var(--glow-sm);
}

.dot-1 {
  top: 12%; left: 50%;
  animation: orbit-dot-1 18s linear infinite;
}

.dot-2 {
  top: 50%; left: 88%;
  background: var(--accent-cyan);
  animation: orbit-dot-2 28s linear infinite reverse;
}

@keyframes orbit-rotate {
  to { transform: rotate(360deg); }
}

@keyframes orbit-dot-1 {
  0%   { transform: rotate(0deg) translateX(180px) rotate(0deg); }
  100% { transform: rotate(360deg) translateX(180px) rotate(-360deg); }
}

@keyframes orbit-dot-2 {
  0%   { transform: rotate(0deg) translateX(200px) rotate(0deg); }
  100% { transform: rotate(360deg) translateX(200px) rotate(-360deg); }
}

.avatar-frame {
  position: relative;
  width: 320px; height: 320px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent-cyan), var(--accent));
  background-size: 300% 300%;
  animation: gradient-rotate 4s linear infinite;
  box-shadow: var(--glow-lg), 0 0 60px rgba(6,182,212,0.2);
}

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

.avatar-glow {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,0.15) 0%, transparent 70%);
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.08); opacity: 1; }
}

.avatar-img {
  width: 100%; height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-secondary);
}
.avatar-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.avatar-img svg { width: 100%; height: 100%; }

.avatar-badge-code {
  position: absolute;
  bottom: -10px; right: -10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.8rem;
  font-size: 0.72rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: var(--glow-sm);
  backdrop-filter: blur(12px);
}

.code-tag {
  color: var(--accent-cyan);
  font-weight: 700;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: float 2.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

.scroll-arrow { display: flex; flex-direction: column; align-items: center; gap: 2px; }

.scroll-chevron {
  width: 12px; height: 6px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: rotate(45deg);
  animation: chevron-fade 1.5s ease-in-out infinite;
}
.scroll-chevron:nth-child(2) { animation-delay: 0.3s; }

@keyframes chevron-fade {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 1; }
}

/* ══════════════════════════════════════════════════════
   ABOUT SECTION
══════════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  line-height: 1.9;
}

.about-text strong { color: var(--text-primary); font-weight: 700; }

.highlight {
  color: var(--accent);
  text-shadow: var(--glow-sm);
  font-weight: 700;
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.info-card {
  padding: 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: var(--transition);
}
.info-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.info-icon {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.info-val {
  font-size: 0.78rem;
  color: var(--text-primary);
  word-break: break-word;
}

/* ══════════════════════════════════════════════════════
   EDUCATION SECTION
══════════════════════════════════════════════════════ */
.edu-timeline { max-width: 800px; }

.edu-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.5rem;
  transition: var(--transition);
}
.edu-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-md);
  transform: translateY(-3px);
}

.edu-icon-wrap {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(6,182,212,0.1));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.edu-status {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.status-chip {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(14,165,233,0.12);
  border: 1px solid rgba(14,165,233,0.3);
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.edu-location {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.edu-degree {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.edu-institution {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.edu-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.2rem;
}

.edu-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.edu-tag {
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  font-size: 0.66rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
}

/* ══════════════════════════════════════════════════════
   SKILLS SECTION
══════════════════════════════════════════════════════ */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.skills-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 2rem;
}

/* Skill bars */
.skill-bar-group { display: flex; flex-direction: column; gap: 1.6rem; }

.skill-bar-item {}

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.skill-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-primary);
}

.skill-icon { font-size: 1rem; }

.skill-pct {
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
}

.bar-track {
  height: 6px;
  border-radius: var(--radius-full);
  background: rgba(14,165,233,0.1);
  overflow: hidden;
  border: 1px solid var(--border);
}

.bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent), var(--accent-cyan));
  width: 0%;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px rgba(14,165,233,0.6);
  position: relative;
}

.bar-fill.animated::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 20px; height: 100%;
  background: rgba(255,255,255,0.3);
  border-radius: var(--radius-full);
  animation: bar-shimmer 2s ease-in-out infinite;
}

@keyframes bar-shimmer {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* Tech grid */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.tech-chip {
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.73rem;
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: default;
}
.tech-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

/* ══════════════════════════════════════════════════════
   PROJECTS SECTION
══════════════════════════════════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: default;
}

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

.project-card:hover .project-glow { opacity: 1; }
.project-card:hover .project-icon-wrap { color: var(--accent); box-shadow: var(--glow-sm); }

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.2rem;
}

.project-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-cyan);
  letter-spacing: 0.12em;
  opacity: 0.7;
}

.project-links {
  display: flex;
  gap: 0.6rem;
}

.proj-link {
  color: var(--text-muted);
  transition: var(--transition);
  display: flex;
  align-items: center;
}
.proj-link:hover {
  color: var(--accent);
  filter: drop-shadow(0 0 6px var(--accent));
  transform: translateY(-1px);
}

.project-icon-wrap {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: rgba(14,165,233,0.08);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  transition: var(--transition);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.7rem;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.4rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tech-tag {
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(14,165,233,0.08);
  border: 1px solid rgba(14,165,233,0.2);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.project-glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(14,165,233,0.04), rgba(6,182,212,0.03));
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

/* ══════════════════════════════════════════════════════
   LANGUAGES SECTION
══════════════════════════════════════════════════════ */
.lang-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 800px;
}

.lang-card {
  padding: 2rem;
  transition: var(--transition);
}
.lang-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-3px);
}

.lang-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.lang-flag {
  font-size: 2rem;
  flex-shrink: 0;
}

.lang-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.lang-level {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.lang-pct {
  margin-left: auto;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
}

.lang-bar-track {
  height: 5px;
  border-radius: var(--radius-full);
  background: rgba(14,165,233,0.1);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 1rem;
}

.lang-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent), var(--accent-cyan));
  width: 0%;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 6px rgba(14,165,233,0.5);
}

.lang-dots {
  display: flex;
  gap: 0.4rem;
}

.dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  transition: var(--transition);
}
.dot.filled {
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}
.dot.half {
  background: linear-gradient(90deg, var(--accent) 50%, transparent 50%);
  box-shadow: 0 0 4px rgba(14,165,233,0.4);
}

/* ══════════════════════════════════════════════════════
   CONTACT SECTION
══════════════════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}

.contact-lead {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.contact-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.3rem;
  transition: var(--transition);
  color: inherit;
}

.contact-card:hover:not(.no-link) {
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.contact-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: rgba(14,165,233,0.08);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  transition: var(--transition);
}
.contact-card:hover .contact-icon {
  background: rgba(14,165,233,0.15);
  box-shadow: var(--glow-sm);
}

.contact-detail {
  flex: 1;
  min-width: 0;
}

.contact-label {
  display: block;
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.contact-val {
  display: block;
  font-size: 0.76rem;
  color: var(--text-primary);
  word-break: break-all;
}

.contact-arrow {
  color: var(--text-muted);
  font-size: 1rem;
  transition: var(--transition);
}
.contact-card:hover .contact-arrow {
  color: var(--accent);
  transform: translateX(3px);
}

/* ══════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════ */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 0.6rem; }

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: var(--glow-sm);
  margin-bottom: 0.5rem;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-year {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ─── BACK TO TOP ─── */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-cyan));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-md);
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  pointer-events: none;
}
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
#back-to-top:hover {
  box-shadow: var(--glow-lg);
  transform: translateY(-3px);
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE — TABLET
══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 340px;
    gap: 2.5rem;
  }
  .avatar-frame { width: 280px; height: 280px; }
  .skills-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE — MOBILE
══════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .section { padding: 70px 0; }

  /* Nav mobile */
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1.5rem 0;
    z-index: 999;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-link { padding: 0.8rem 2rem; font-size: 0.85rem; }
  .nav-link::after { display: none; }

  /* Hero */
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content { order: 2; }
  .hero-avatar-wrapper { order: 1; }

  .hero-badge { justify-content: center; }
  .hero-intro { margin: 0 auto 2rem; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }

  .avatar-frame { width: 240px; height: 240px; }
  .avatar-badge-code { display: none; }

  /* Sections */
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-cards { grid-template-columns: 1fr; }
  .edu-card { grid-template-columns: 1fr; gap: 1rem; }
  .edu-icon-wrap { width: 52px; height: 52px; }

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

  .section-header { flex-wrap: wrap; }
  .section-line { display: none; }
}

@media (max-width: 400px) {
  .hero-name { font-size: 2rem; }
  .btn { font-size: 0.72rem; padding: 0.6rem 1.1rem; }
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: var(--radius-full);
  box-shadow: var(--glow-sm);
}

/* ─── SELECTION ─── */
::selection {
  background: rgba(14,165,233,0.25);
  color: var(--accent-bright);
}