/* ============ RESET & VARIABLES ============ */
:root{
  --navy: #0b1f3a;
  --navy-dark: #071527;
  --blue: #1f6feb;
  --blue-light: #4c9aff;
  --accent: #ffb020;
  --grey: #6b7688;
  --light-bg: #f5f7fb;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11,31,58,0.08);
  --transition: all .3s ease;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter', sans-serif;
  color:#22314a;
  background:var(--white);
  line-height:1.6;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:'Poppins', sans-serif; color:var(--navy);}
a{text-decoration:none; color:inherit;}
ul{list-style:none;}
.container{max-width:1180px; margin:0 auto; padding:0 24px;}
img{max-width:100%; display:block;}

/* ============ REVEAL ANIMATION ============ */
[data-reveal]{opacity:0; transform:translateY(30px); transition:opacity .8s ease, transform .8s ease;}
[data-reveal].active{opacity:1; transform:translateY(0);}

/* ============ BUTTONS ============ */
.btn{
  display:inline-block;
  padding:14px 30px;
  border-radius:50px;
  font-weight:600;
  font-size:.95rem;
  cursor:pointer;
  transition:var(--transition);
  border:2px solid transparent;
}
.btn-primary{background:linear-gradient(135deg, var(--blue), var(--blue-light)); color:#fff; box-shadow:0 8px 20px rgba(31,111,235,.35);}
.btn-primary:hover{transform:translateY(-3px); box-shadow:0 12px 26px rgba(31,111,235,.45);}
.btn-outline{border-color:var(--navy); color:var(--navy);}
.btn-outline:hover{background:var(--navy); color:#fff; transform:translateY(-3px);}
.btn-small{padding:10px 22px; font-size:.85rem;}
.btn.full{width:100%; text-align:center; border:none;}

/* ============ NAVBAR ============ */
.navbar{
  position:fixed; top:0; left:0; width:100%;
  z-index:1000; background:rgba(11,31,58,0.0);
  transition:var(--transition);
  padding:18px 0;
}
.navbar.scrolled{background:rgba(11,31,58,0.95); backdrop-filter:blur(8px); padding:12px 0; box-shadow:0 4px 20px rgba(0,0,0,.15);}
.nav-inner{display:flex; align-items:center; justify-content:space-between;}
.logo{font-family:'Poppins',sans-serif; font-size:1.5rem; font-weight:700; color:#fff;}
.logo span{color:var(--accent);}
.nav-links{display:flex; gap:28px;}
.nav-links a{color:#e7ecf5; font-weight:500; font-size:.95rem; position:relative; padding:4px 0;}
.nav-links a::after{content:''; position:absolute; left:0; bottom:-2px; width:0; height:2px; background:var(--accent); transition:var(--transition);}
.nav-links a:hover::after{width:100%;}
.nav-cta{background:var(--accent); color:var(--navy-dark); font-weight:600; padding:10px 22px; border-radius:50px;}
.nav-cta:hover{filter:brightness(1.05);}
.burger{display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer;}
.burger span{width:26px; height:2px; background:#fff; border-radius:2px;}

/* ============ HERO ============ */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; align-items:center;
  background:linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 60%, #0a1830 100%);
  overflow:hidden;
  padding-top:100px;
}
.hero-bg{
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 80% 20%, rgba(76,154,255,.25), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(255,176,32,.15), transparent 40%);
  pointer-events:none;
}
.hero-inner{
  display:grid; grid-template-columns:1.1fr .9fr; gap:50px; align-items:center;
  position:relative; z-index:2; padding-bottom:60px;
}
.eyebrow{
  color:var(--accent); text-transform:uppercase; letter-spacing:2px; font-weight:600; font-size:.8rem; margin-bottom:14px;
}
.hero-text h1{font-size:3rem; color:#fff; line-height:1.2; margin-bottom:20px;}
.hero-text h1 .highlight{color:var(--blue-light);}
.hero-desc{color:#c4cede; font-size:1.05rem; max-width:520px; margin-bottom:32px;}
.hero-actions{display:flex; gap:16px; margin-bottom:50px; flex-wrap:wrap;}
.hero-stats{display:flex; gap:40px; flex-wrap:wrap;}
.stat{color:#fff;}
.stat-num{font-family:'Poppins',sans-serif; font-size:2.2rem; font-weight:700; color:var(--blue-light);}
.stat-plus{font-size:1.4rem; font-weight:700; color:var(--blue-light);}
.stat p{color:#9fb0c9; font-size:.85rem; max-width:150px;}

.hero-visual{position:relative; display:flex; align-items:center; justify-content:center; height:420px;}
.avatar-ring{
  width:280px; height:280px; border-radius:50%;
  background:conic-gradient(from 0deg, var(--blue-light), var(--accent), var(--blue-light));
  display:flex; align-items:center; justify-content:center;
  animation:spin 12s linear infinite;
  padding:8px;
}
@keyframes spin{ to{ transform:rotate(360deg);} }
.avatar-circle{
  width:100%; height:100%; border-radius:50%;
  background:var(--navy-dark);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:'Poppins',sans-serif; font-size:3.2rem; font-weight:700;
  animation:spin-rev 12s linear infinite;
  letter-spacing:2px;
}
@keyframes spin-rev{ to{ transform:rotate(-360deg);} }
.floating-card{
  position:absolute;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(10px);
  color:#fff; padding:10px 16px; border-radius:12px; font-size:.82rem; font-weight:500;
  animation:float 5s ease-in-out infinite;
  box-shadow:0 8px 20px rgba(0,0,0,.25);
}
.card-1{top:0; left:-10px; animation-delay:0s;}
.card-2{bottom:40px; right:-20px; animation-delay:1.2s;}
.card-3{bottom:-10px; left:20px; animation-delay:2.4s;}
@keyframes float{ 0%,100%{transform:translateY(0);} 50%{transform:translateY(-14px);} }

.scroll-down{
  position:absolute; bottom:26px; left:50%; transform:translateX(-50%);
  width:26px; height:42px; border:2px solid rgba(255,255,255,.5); border-radius:16px; z-index:2;
}
.scroll-down span{
  position:absolute; top:6px; left:50%; transform:translateX(-50%);
  width:4px; height:8px; background:var(--accent); border-radius:2px;
  animation:scrollDown 1.6s infinite;
}
@keyframes scrollDown{ 0%{opacity:1; top:6px;} 100%{opacity:0; top:24px;} }

/* ============ SECTION HEAD ============ */
.section-head{text-align:center; max-width:640px; margin:0 auto 50px;}
.section-head h2{font-size:2.1rem; margin-top:8px;}
.section-head.light h2, .section-head.light .eyebrow{color:#fff;}
.section-head .eyebrow{color:var(--blue); text-align:center;}

/* ============ ABOUT ============ */
.about{padding:110px 0; background:var(--light-bg);}
.about-grid{display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:flex-start;}
.about-text p{color:#425065; margin-bottom:18px;}
.contact-mini{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:26px;}
.contact-mini div{display:flex; align-items:center; gap:8px; font-size:.9rem; color:#33415a;}
.about-highlights{display:grid; grid-template-columns:1fr 1fr; gap:20px;}
.highlight-card{
  background:#fff; padding:24px; border-radius:var(--radius); box-shadow:var(--shadow);
  transition:var(--transition);
}
.highlight-card:hover{transform:translateY(-6px); box-shadow:0 16px 34px rgba(11,31,58,.12);}
.highlight-card h3{font-size:1.05rem; margin-bottom:10px;}
.highlight-card p{font-size:.88rem; color:#5b6779;}

/* ============ EXPERIENCE / TIMELINE ============ */
.experience{padding:110px 0; background:#fff;}
.timeline{position:relative; max-width:900px; margin:0 auto; padding-left:30px; border-left:3px solid #dde4f0;}
.timeline-item{position:relative; padding:0 0 50px 34px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{
  position:absolute; left:-42px; top:4px; width:16px; height:16px; border-radius:50%;
  background:var(--blue); border:4px solid #dbe7ff; box-shadow:0 0 0 4px #fff;
}
.timeline-date{display:inline-block; background:#eaf1ff; color:var(--blue); font-weight:600; font-size:.8rem; padding:5px 14px; border-radius:20px; margin-bottom:10px;}
.timeline-content h3{font-size:1.25rem; margin-bottom:2px;}
.timeline-content h4{font-size:.95rem; color:var(--grey); font-weight:500; margin-bottom:14px;}
.timeline-content ul li{position:relative; padding-left:18px; color:#465268; font-size:.92rem; margin-bottom:8px;}
.timeline-content ul li::before{content:''; position:absolute; left:0; top:9px; width:6px; height:6px; background:var(--blue-light); border-radius:50%;}

/* ============ SKILLS ============ */
.skills{padding:110px 0; background:var(--light-bg);}
.skills-grid{display:flex; flex-wrap:wrap; gap:14px; justify-content:center; margin-bottom:60px;}
.skill-tag{
  background:#fff; border:1px solid #dde4f0; padding:10px 20px; border-radius:30px;
  font-size:.88rem; font-weight:500; color:var(--navy); box-shadow:var(--shadow);
  transition:var(--transition);
}
.skill-tag:hover{background:var(--blue); color:#fff; transform:translateY(-4px);}
.progress-list{max-width:750px; margin:0 auto; display:flex; flex-direction:column; gap:22px;}
.progress-label{display:flex; justify-content:space-between; font-size:.9rem; font-weight:600; margin-bottom:8px; color:var(--navy);}
.progress-bar{width:100%; height:10px; background:#e2e8f4; border-radius:10px; overflow:hidden;}
.progress-fill{height:100%; width:0; border-radius:10px; background:linear-gradient(90deg, var(--blue), var(--blue-light)); transition:width 1.4s ease;}

/* ============ CERTIFICATIONS ============ */
.certifications{padding:110px 0; background:#fff;}
.cert-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(230px,1fr)); gap:24px;}
.cert-card{
  background:var(--light-bg); border-radius:var(--radius); padding:28px 22px; text-align:center;
  transition:var(--transition); border:1px solid #e6ebf5;
}
.cert-card:hover{transform:translateY(-8px); box-shadow:0 16px 34px rgba(11,31,58,.1); background:#fff;}
.cert-icon{font-size:2rem; margin-bottom:14px;}
.cert-card h3{font-size:1rem; margin-bottom:8px;}
.cert-card p{color:var(--grey); font-size:.85rem;}

/* ============ EDUCATION ============ */
.education{padding:90px 0 110px; background:var(--light-bg);}
.edu-card{
  max-width:700px; margin:0 auto; background:#fff; border-radius:var(--radius); box-shadow:var(--shadow);
  padding:30px; display:flex; align-items:center; gap:22px;
}
.edu-icon{font-size:2.4rem;}
.edu-card h3{font-size:1.2rem;}
.edu-card h4{font-size:.95rem; color:var(--grey); font-weight:500; margin:4px 0;}
.edu-card p{color:#5b6779; font-size:.9rem;}

/* ============ CONTACT ============ */
.contact{padding:110px 0; background:linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 100%); color:#fff;}
.contact-sub{color:#c4cede; margin-top:10px;}
.contact-grid{display:grid; grid-template-columns:1.2fr .8fr; gap:50px;}
.contact-form{display:flex; flex-direction:column; gap:16px;}
.form-row{display:flex; gap:16px;}
.contact-form input, .contact-form textarea{
  width:100%; padding:14px 16px; border-radius:10px; border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06); color:#fff; font-family:inherit; font-size:.92rem; resize:none;
}
.contact-form input::placeholder, .contact-form textarea::placeholder{color:#9fb0c9;}
.contact-form input:focus, .contact-form textarea:focus{outline:none; border-color:var(--blue-light);}
.form-note{font-size:.85rem; color:var(--accent); min-height:20px;}
.contact-details{display:flex; flex-direction:column; gap:26px; justify-content:center;}
.detail-item{display:flex; gap:16px; align-items:flex-start;}
.detail-item span{font-size:1.5rem;}
.detail-item h4{color:#fff; font-size:.95rem; margin-bottom:4px;}
.detail-item a, .detail-item span + span{color:#c4cede; font-size:.9rem;}

/* ============ FOOTER ============ */
.footer{background:var(--navy-dark); color:#9fb0c9; padding:22px 0;}
.footer-inner{display:flex; justify-content:space-between; align-items:center; font-size:.85rem; flex-wrap:wrap; gap:10px;}
.back-top{color:var(--accent); font-weight:600;}

/* ============ RESPONSIVE ============ */
@media (max-width: 960px){
  .hero-inner, .about-grid, .contact-grid{grid-template-columns:1fr;}
  .hero-visual{height:320px; order:-1;}
  .about-highlights{order:2;}
  .nav-links{
    position:fixed; top:0; right:-100%; height:100vh; width:70%; max-width:320px;
    background:var(--navy-dark); flex-direction:column; padding:100px 30px; gap:24px; transition:var(--transition);
  }
  .nav-links.open{right:0;}
  .burger{display:flex;}
  .nav-cta{display:none;}
}
@media (max-width: 600px){
  .hero-text h1{font-size:2.2rem;}
  .hero-stats{gap:24px;}
  .form-row{flex-direction:column;}
  .contact-mini{grid-template-columns:1fr;}
}