/* ───────────────────────────────────────────
   DESIGN TOKENS
   ─────────────────────────────────────────── */
:root {
  --bg:          #0a0a0f;
  --bg-card:     #12121a;
  --bg-card-alt: #16161f;
  --surface:     #1a1a27;
  --border:      #232336;
  --text:        #e4e4ed;
  --text-dim:    #8888a4;
  --accent:      #6c5ce7;
  --accent-glow: rgba(108, 92, 231, .35);
  --accent2:     #00cec9;
  --accent3:     #fd79a8;
  --accent4:     #fdcb6e;
  --accent5:     #55efc4;
  --radius:      14px;
  --radius-sm:   8px;
  --transition:  .3s cubic-bezier(.4,0,.2,1);
  --max-w:       1140px;
  --font:        'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

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

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

::selection {
  background: var(--accent);
  color: #fff;
}

/* ───────────────────────────────────────────
   NAVBAR
   ─────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  height: 70px;
  background: rgba(10, 10, 15, .72);
  backdrop-filter: blur(18px) saturate(1.6);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  border-bottom: 1px solid rgba(255,255,255,.04);
  transition: background var(--transition);
}

.nav-logo {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-dim);
  position: relative;
  transition: color var(--transition);
}

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

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

#lang-toggle {
  font-family: var(--font);
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(108, 92, 231, .1);
  border: 1px solid rgba(108, 92, 231, .35);
  padding: .4rem 1rem;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: .04em;
}

#lang-toggle:hover {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

#mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

#mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ───────────────────────────────────────────
   HERO
   ─────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 1.5rem 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  animation: glowPulse 6s ease-in-out infinite alternate;
}

@keyframes glowPulse {
  0%   { opacity: .5; transform: translateX(-50%) scale(1); }
  100% { opacity: .9; transform: translateX(-50%) scale(1.15); }
}

.hero-content {
  position: relative;
  max-width: 740px;
}

.hero-greeting {
  font-size: .95rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .75rem;
  opacity: 0;
  animation: fadeUp .8s ease forwards;
}

.hero-name {
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 30%, var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: .75rem;
  opacity: 0;
  animation: fadeUp .8s .15s ease forwards;
}

.hero-title {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp .8s .3s ease forwards;
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: fadeUp .8s .45s ease forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp .8s .6s ease forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 600;
  padding: .8rem 2rem;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { opacity: .3; transform: scaleY(.6); }
  50%      { opacity: 1;  transform: scaleY(1);  }
}

/* ───────────────────────────────────────────
   SECTIONS (shared)
   ─────────────────────────────────────────── */
section:not(#hero) {
  padding: 100px 1.5rem;
}

.section-container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

/* ───────────────────────────────────────────
   ABOUT
   ─────────────────────────────────────────── */
#about {
  background: var(--bg-card);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-dim);
  line-height: 1.85;
}

.about-stats {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  text-align: center;
  transition: all var(--transition);
  flex: 1;
}

.stat-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(108, 92, 231, .12);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: .25rem;
  display: block;
}

/* ───────────────────────────────────────────
   EXPERIENCE
   ─────────────────────────────────────────── */
.experience-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
}

.experience-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(108, 92, 231, .12);
}

.experience-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.experience-company {
  display: inline-block;
  margin-bottom: .45rem;
  color: var(--accent2);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.experience-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.experience-date {
  flex-shrink: 0;
  padding: .35rem .85rem;
  border: 1px solid rgba(108, 92, 231, .35);
  border-radius: 100px;
  background: rgba(108, 92, 231, .1);
  color: var(--accent);
  font-size: .78rem;
  font-weight: 600;
}

.experience-desc {
  max-width: 850px;
  color: var(--text-dim);
  font-size: .95rem;
}

/* ───────────────────────────────────────────
   SKILLS
   ─────────────────────────────────────────── */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: .65rem 1.4rem;
  border-radius: 100px;
  font-size: .9rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: default;
}

.skill-badge:hover {
  border-color: var(--accent);
  background: var(--surface);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(108, 92, 231, .12);
}

.skill-badge.skill-secondary {
  border-color: rgba(0, 206, 201, .3);
  color: var(--text-dim);
}

.skill-badge.skill-secondary:hover {
  border-color: var(--accent2);
}

.skill-icon {
  font-size: 1.15rem;
}

/* ───────────────────────────────────────────
   PROJECTS
   ─────────────────────────────────────────── */
#projects {
  background: var(--bg-card);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, .4);
  border-color: var(--accent);
}

.card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

.card-accent.accent-2 { background: linear-gradient(90deg, var(--accent2), var(--accent3)); }
.card-accent.accent-3 { background: linear-gradient(90deg, var(--accent3), var(--accent4)); }
.card-accent.accent-4 { background: linear-gradient(90deg, var(--accent4), var(--accent5)); }
.card-accent.accent-5 { background: linear-gradient(90deg, var(--accent5), var(--accent));  }

.card-body {
  padding: 1.75rem;
}

.card-tag {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent);
  background: rgba(108, 92, 231, .1);
  padding: .25rem .75rem;
  border-radius: 100px;
  margin-bottom: .75rem;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .6rem;
}

.card-desc {
  font-size: .88rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ───────────────────────────────────────────
   CONTACT
   ─────────────────────────────────────────── */
.contact-subtitle {
  color: var(--text-dim);
  margin-top: -2rem;
  margin-bottom: 2.5rem;
  font-size: 1rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(108, 92, 231, .12);
}

.contact-icon {
  font-size: 1.75rem;
  margin-bottom: .75rem;
}

.contact-label {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-dim);
  margin-bottom: .25rem;
}

.contact-value {
  font-size: .92rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}

/* ───────────────────────────────────────────
   FOOTER
   ─────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: .82rem;
  color: var(--text-dim);
}

/* ───────────────────────────────────────────
   SCROLL-REVEAL
   ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}

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

/* ───────────────────────────────────────────
   RESPONSIVE
   ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-stats {
    justify-content: flex-start;
  }

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

@media (max-width: 700px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, .96);
    backdrop-filter: blur(18px);
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem 0;
    transform: translateY(-120%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    transform: translateY(0);
  }

  #mobile-menu-btn {
    display: flex;
  }

  #mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  #mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
  #mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .experience-header {
    flex-direction: column;
    gap: 1rem;
  }

  .about-stats {
    flex-wrap: wrap;
  }

  .stat-card {
    flex: 1 1 120px;
  }

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