/* ================= ROOT VARIABLES ================= */
:root {
  --bg-primary: #0a0b14;
  --bg-secondary: #111427;
  --accent-start: #00ffe7;
  --accent-end: #9d00ff;
  --accent-gradient: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  --text-primary: #e9e9f0;
  --text-secondary: #9aa0b8;
  --card-bg: rgba(255,255,255,0.05);
  --card-border: rgba(255,255,255,0.1);
  --font-main: 'Inter', sans-serif;
  --transition: all 0.4s ease;
}

/* ================= GLOBAL ================= */
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); background: var(--bg-primary); color: var(--text-primary); }
body{
  overflow-x:hidden;
}

/* ================= LIGHT THEME ================= */
body.light {
  --bg-primary:#f8f9fa;
  --bg-secondary:#ffffff;
  --accent-start:#000000;
  --accent-end:#9d00ff;
  --text-primary:#111111;
  --text-secondary:#555555;
  --card-bg: rgba(0,0,0,0.05);
}
body.light .navbar { background: rgba(248,249,250,0.95); color: var(--text-primary); }
body.light .nav-links.active { background: rgba(248,249,250,0.95); }
body.light .btn-primary { background: var(--accent-gradient); color:#fff; }
body.light .btn-secondary { color: var(--accent-start); border-color: var(--accent-start); }

/* ================= NAVBAR ================= */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  display:flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 50px;
  background: rgba(15,16,30,0.6);
  backdrop-filter: blur(25px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
  z-index: 1000;
  transition: var(--transition);
}

.logo {
  font-size: 25px;
  font-weight: 900;
  font-family: 'Playfair Display', serif;
  background: var(--accent-gradient);
  background-size: 600% 600%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientMove 6s ease infinite;
  letter-spacing: 3px;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.4s, text-shadow 0.4s;
}
.logo:hover {
  transform: scale(1.18);
  text-shadow: 0 0 25px var(--accent-start), 0 0 35px var(--accent-end), 0 0 50px var(--accent-start);
}

.nav-links {
  display:flex;
  gap:30px;
  list-style:none;
}

.nav-links a {
  text-decoration:none;
  color: var(--text-secondary);
  font-size:16px;
  font-weight:500;
  position: relative;
  transition: all 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0%;
  height: 2px;
  background: var(--accent-start);
  left:0;
  bottom:-4px;
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent-start);
  transform: translateY(-2px);
}
.nav-links a:hover::after { width:100%; }

.nav-links a.active {
  color: var(--accent-end);
}
.nav-links a.active::after {
  width:100%;
  background: var(--accent-gradient);
}

.nav-buttons {
  display:flex;
  gap:16px;
}

#themeToggle  {
  width:46px;
  height:46px;
  border-radius:14px;
  border:none;
  display:flex;
  justify-content:center;
  align-items:center;
  font-size:18px;
  cursor:pointer;
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  transition: all 0.4s ease;
}

.menu-toggle {
  width:46px;
  height:46px;
  border-radius:14px;
  border:none;
  justify-content:center;
  align-items:center;
  font-size:18px;
  cursor:pointer;
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  transition: all 0.4s ease;
  display:none;
  z-index:1100; 
  position: relative;
}
#themeToggle:hover, .menu-toggle:hover {
  background: var(--accent-gradient);
  color:#fff;
  box-shadow: 0 0 20px var(--accent-end), 0 0 28px var(--accent-start);
}

/* ================= HERO ================= */
.hero {
  display:flex;
  justify-content: space-between;
  align-items: center;
  padding:140px 40px 80px 40px;
  max-width:1200px;
  margin:auto;
  gap:50px;
}
.hero-left { max-width:600px; }
.hero-left h1 {
  font-size:50px;
  font-weight:700;
  margin-bottom:20px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 1s ease forwards;
}
.hero-left p {
  color: var(--text-secondary);
  margin-bottom:35px;
  font-size:18px;
  line-height:1.5;
  animation: fadeInUp 1.2s ease forwards;
}
.hero-img-container {
  width:340px;
  height:340px;
  border-radius:50%;
  overflow:hidden;
  border:3px solid var(--accent-start);
  transition: transform 0.5s, box-shadow 0.5s;
}
.hero-img-container:hover {
  transform: scale(1.07);
  box-shadow: 0 25px 50px rgba(0,255,231,0.4);
}
.hero-img { width:100%; height:100%; object-fit:cover; }

.buttons {
  display:flex;
  gap:22px;
  flex-wrap:wrap;
}
.btn-primary, .btn-secondary {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:10px;
  padding:14px 30px;
  font-weight:600;
  text-decoration:none;
  transition: all 0.4s ease;
}
.btn-primary {
  background: var(--accent-gradient);
  color:#fff;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 30px rgba(0,255,231,0.55), 0 0 40px rgba(157,0,255,0.35);
}
.btn-secondary {
  border:1px solid var(--accent-start);
  color: var(--accent-start);
}
.btn-secondary:hover {
  background: var(--accent-gradient);
  color:white;
  transform: translateY(-3px);
  box-shadow: 0 0 25px rgba(0,255,231,0.35),0 0 30px rgba(157,0,255,0.25);
}

/* ================= SECTIONS ================= */
.section { max-width:1200px; margin:auto; padding:80px 40px; }
.section h2 {
  font-size:38px;
  margin-bottom:30px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ABOUT CARDS */
.about-cards { display:flex; gap:20px; flex-wrap:wrap; margin-top:30px; }
.about-card {
  background: var(--card-bg);
  padding:20px;
  border-radius:12px;
  border:1px solid var(--card-border);
  flex:1;
  min-width:250px;
  text-align:center;
  transition: var(--transition);
}
.about-card i { font-size:32px; margin-bottom:12px; color: var(--accent-start); }
.about-card:hover { transform: translateY(-6px); box-shadow:0 15px 35px rgba(0,255,231,0.25); }
.about-card h3 { margin-bottom:8px; }
.about-card p { color: var(--text-secondary); font-size:15px; line-height:1.5; }

/* EXPERIENCE */
.experience-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap:28px; }
.experience-card {
  background: var(--card-bg);
  border-radius:14px;
  padding:22px;
  border:1px solid var(--card-border);
  transition: var(--transition);
}
.experience-card:hover { transform: translateY(-10px); box-shadow:0 25px 50px rgba(0,255,231,0.25); }
.experience-card h3 { margin-bottom:12px; }
.exp-company { color: var(--accent-start); margin-bottom:12px; font-weight:500; }
.exp-list li { color: var(--text-secondary); margin-bottom:8px; }

/* ================== PROJECTS & CERTIFICATES ================== */
.projects-grid, .certificates-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
  gap: 28px; 
}

.project-card, .certificate-card {
  background: var(--card-bg);
  border-radius: 14px;
  padding: 22px;
  border: 1px solid var(--card-border);
  transition: var(--transition);
}

.project-card img, .certificate-card img { 
  width: 100%; 
  border-radius: 10px; 
  margin-bottom: 15px; 
}

.project-links a, .certificate-card a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.4s ease;
  border: 1px solid var(--accent-start);
  color: var(--accent-start);
  background: var(--card-bg);
}

.project-links a:hover, .certificate-card a:hover {
  background: var(--accent-gradient);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 0 25px rgba(0, 255, 231, 0.35), 0 0 30px rgba(157, 0, 255, 0.25);
}


/* SKILLS */
.skills-category { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:28px; margin-top:30px; }
.skills-box {
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:14px;
  padding:22px;
  transition:0.4s;
}
.skills-box:hover { transform:translateY(-5px); box-shadow:0 15px 40px rgba(0,255,231,0.25); border-color: var(--accent-end); }
.skills-box h3 { font-size:20px; margin-bottom:16px; color:var(--text-primary); font-weight:600; border-left:4px solid var(--accent-start); padding-left:12px; }
.skills { display:flex; flex-wrap:wrap; gap:14px; margin-top:8px; }
.skills span {
  background:var(--card-bg);
  border-radius:12px;
  border:1px solid var(--card-border);
  padding:10px 18px;
  font-size:14px;
  color:var(--text-primary);
  transition:0.3s ease;
}
.skills span:hover {
  background:var(--accent-gradient);
  color:#fff;
  transform:translateY(-2px) scale(1.05);
  box-shadow:0 0 15px rgba(0,255,231,0.3),0 0 20px rgba(157,0,255,0.2);
}

/* CONTACT */
.contact-intro { font-size:17px; color: var(--text-secondary); margin-bottom:25px; }
.contact-details {
  list-style:none;
  margin:15px 0 25px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.contact-details li { color: var(--text-secondary); font-size:15px; display:flex; align-items:center; gap:12px; transition: color 0.3s ease; }
.contact-details li i { color: var(--accent-start); font-size:18px; }
.contact-details a { color: var(--accent-start); text-decoration:none; transition: color 0.3s ease; }
.contact-details a:hover { color: var(--accent-end); text-decoration:underline; }
.contact-buttons { display:flex; gap:18px; flex-wrap:wrap; }
.contact-buttons a { display:flex; align-items:center; gap:8px; padding:12px 22px; border-radius:12px; text-decoration:none; font-weight:500; transition: all 0.3s ease; }
.contact-buttons a.btn-primary { background: var(--accent-gradient); color:#fff; }
.contact-buttons a.btn-primary:hover { transform: translateY(-2px) scale(1.05); box-shadow:0 0 20px rgba(0,255,231,0.35),0 0 25px rgba(157,0,255,0.25); }
.contact-buttons a.btn-secondary { border:1px solid var(--accent-start); color: var(--accent-start); background:transparent; }
.contact-buttons a.btn-secondary:hover { background: var(--accent-gradient); color:#fff; transform: translateY(-2px) scale(1.05); box-shadow:0 0 20px rgba(0,255,231,0.35),0 0 25px rgba(157,0,255,0.25); }

/* FOOTER */
footer { text-align:center; padding:30px; border-top:1px solid var(--card-border); }
.footer-social { margin-top:15px; display:flex; justify-content:center; gap:20px; }
.footer-social a { font-size:22px; color:var(--text-secondary); transition: var(--transition); }
.footer-social a:hover { color: var(--accent-start); }

/* ================= ANIMATIONS ================= */
@keyframes fadeInUp { 0% { opacity:0; transform:translateY(20px); } 100% { opacity:1; transform:translateY(0); } }
@keyframes gradientMove { 0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%} }


/* ================= MOBILE RESPONSIVE ================= */

@media (max-width:768px){

 .navbar{
  padding:14px 18px;
}
#themeToggle,
.menu-toggle{
  width:40px;
  height:40px;
    display:flex;
}
.logo{
  font-size: 35px;
}
  .nav-links{
    display:flex;
    flex-direction:column;
    position:absolute;
    top:70px;
    right:10px;
    width:220px;
    background:var(--bg-secondary);
    padding:20px;
    border-radius:12px;
    gap:15px;

    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:all 0.3s ease;
    z-index:1000;
  }

  .nav-links.active{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }

  .nav-links a{
    padding:8px 0;
  }

  .hero{
    padding:120px 20px;
    flex-direction:column;
    text-align:center;
    gap:35px;
  }

  .section{
    padding:60px 20px;
  }

  .hero-img-container{
    width:240px;
    height:240px;
    margin:auto;
  }

}

/* ================= SMALL PHONES ================= */

@media (max-width:480px){

  .hero-left h1{
    font-size:28px;
    line-height:1.3;
  }

  .btn-primary,
  .btn-secondary{
    width:100%;
    justify-content:center;
  }

}