/* style.css
   ------------------------
   Main stylesheet
   - Uses CSS variables for easy theme customization
   - Grid and Flexbox layout
   - Comments mark where to change colors, spacing, fonts, etc.
*/

/* ------------------------------
   THEME / CUSTOMIZATION
   ------------------------------
   Customize primary color, background, and font below.
*/
:root{
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  --bg: #0f1724;               /* page background */
  --card: #0b1220;             /* card / panel background */
  --muted: #9aa4b2;            /* secondary text */
  --text: #e6eef8;             /* primary text */
  --accent: #22c1c3;           /* Customize primary color here */
  --accent-2: #7c9eff;
  --glass: rgba(255,255,255,0.03);
  --radius: 12px;

  --container-width: 1100px;
  --gap: 1.25rem;
}

/* Accessibility / prefers-reduced-motion support */
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
}

/* Global resets */
* { box-sizing: border-box; }
html,body { height:100%; }
body{
  margin:0;
  font-family: var(--font-sans);
  background: linear-gradient(180deg, var(--bg) 0%, #071026 100%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
  scroll-behavior: smooth; /* smooth scrolling */
  padding-bottom:4rem;
}

/* Container helper */
.container {
  width: min(95%, var(--container-width));
  margin: 0 auto;
}

/* ------------------------------
   HEADER / NAV
   ------------------------------ */
.site-header {
  position: fixed;
  width: 100%;
  top:0;
  z-index:1000;
  backdrop-filter: blur(6px);
  background: linear-gradient(180deg, rgba(6,10,18,0.6), rgba(6,10,18,0.25));
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.nav {
  display:flex;
  align-items:center;
  gap:1rem;
  padding: 0.75rem 0;
}

/* Brand */
.brand .logo {
  font-weight:700;
  letter-spacing:0.2px;
  text-decoration:none;
  color:var(--text);
}

/* Nav links */
.nav-links {
  display:flex;
  gap:1.1rem;
  margin-left: auto;
  align-items:center;
  list-style:none;
  padding:0;
}
.nav-links a {
  text-decoration:none;
  color:var(--muted);
  padding:0.5rem 0.6rem;
  border-radius:8px;
  transition: all 160ms ease;
  font-weight:600;
  font-size:0.95rem;
}
.nav-links a:hover,
.nav-links a:focus {
  color:var(--text);
  background: var(--glass);
}

/* Language switcher */
.lang-switch {
  display:flex;
  align-items:center;
  gap:0.4rem;
  margin-left:1rem;
  margin-right:0.25rem;
}
.lang-btn {
  background:transparent;
  color:var(--muted);
  border: none;
  font-weight:700;
  cursor:pointer;
  padding:0.3rem 0.4rem;
}
.lang-btn[aria-pressed="true"] { color:var(--accent); }

/* Hamburger for mobile */
.nav-toggle {
  display:none;
  background:transparent;
  border:none;
  margin-left:auto;
  cursor:pointer;
}
.hamburger,
.hamburger::before,
.hamburger::after{
  display:block;
  width:22px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  position:relative;
}
.hamburger::before,
.hamburger::after{
  content:"";
  position:absolute;
  left:0;
  transition:transform 200ms ease;
}
.hamburger::before{ top:-7px; }
.hamburger::after{ top:7px; }

/* ------------------------------
   HERO
   ------------------------------ */
.hero{
  display:grid;
  grid-template-columns: 1fr 420px;
  gap:2rem;
  align-items:center;
  padding:4rem 0;
}
.headline{
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  margin:0 0 0.6rem 0;
  line-height:1.05;
}
.sub{ font-weight:600; color:var(--accent-2); margin-bottom:0.8rem; }
.lead{ color:var(--muted); max-width:60ch; margin-bottom:1.1rem; }

/* CTA buttons */
.btn{
  display:inline-block;
  padding:0.6rem 1rem;
  border-radius:10px;
  text-decoration:none;
  font-weight:700;
  transition: transform 180ms ease, box-shadow 180ms ease;
  border: 1px solid rgba(255,255,255,0.04);
}
.btn.primary{
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
  color:#062028;
  box-shadow: 0 6px 18px rgba(34,193,195,0.12);
}
.btn.ghost{
  background:transparent;
  color:var(--text);
  border: 1px solid rgba(255,255,255,0.06);
}

/* Hero image placeholder */
.hero-image .image-placeholder{
  width:100%;
  height:320px;
  border-radius:14px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--muted);
  font-weight:600;
  letter-spacing:0.6px;
}

/* ------------------------------
   ABOUT
   ------------------------------ */
.about{ padding:3rem 0; }
.about-grid{
  display:grid;
  grid-template-columns: 1fr 280px;
  gap:1.5rem;
  align-items:start;
}
.about-text p { color:var(--muted); }
.about-highlights { margin-top:1rem; list-style: none; padding:0; display:grid; gap:0.5rem; }
.about-highlights li { background: rgba(255,255,255,0.02); padding:0.6rem; border-radius:8px; font-weight:600; }

/* Stats */
.about-stats { display:flex; flex-direction:column; gap:0.8rem; }
.stat{ background:var(--card); padding:1rem; border-radius:10px; text-align:center; }
.stat strong { display:block; font-size:1.25rem; color:var(--accent); }

/* ------------------------------
   SKILLS
   ------------------------------ */
.skills { padding:3rem 0; }
.skills-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap:1rem;
}
.skill-card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  padding:1rem;
  border-radius:10px;
  transition: transform 180ms ease, box-shadow 180ms ease;
  display:flex;
  gap:0.75rem;
  align-items:center;
}
.skill-card:hover{ transform: translateY(-6px); box-shadow: 0 8px 30px rgba(2,6,23,0.6); }
.skill-icon { width:42px; height:42px; border-radius:8px; background:rgba(255,255,255,0.03); display:flex; align-items:center; justify-content:center; font-weight:800; }
.skill-body { display:flex; flex-direction:column; gap:0.15rem; }
.skill-title{ font-weight:700; }
.skill-sub{ color:var(--muted); font-size:0.9rem; }

/* ------------------------------
   PROJECTS
   ------------------------------ */
.projects { padding:3rem 0; }
.projects-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap:1rem;
}
.project-card{
  background:var(--card);
  border-radius:10px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.project-card:hover{ transform: translateY(-8px); box-shadow: 0 12px 40px rgba(2,6,23,0.6); }
.project-img{ height:160px; background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01)); display:block; }
.project-body{ padding:1rem; flex:1; display:flex; flex-direction:column; gap:0.8rem; }
.project-tech { color:var(--muted); font-size:0.9rem; }
.project-actions { margin-top:auto; display:flex; gap:0.5rem; }

/* ------------------------------
   CONTACT
   ------------------------------ */
.contact{ padding:3rem 0; }
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 300px;
  gap:1rem;
}
.contact-form form{
  display:flex;
  flex-direction:column;
  gap:0.6rem;
}
.contact-form label{ font-weight:700; }
.contact-form input,
.contact-form textarea{
  background:transparent;
  border:1px solid rgba(255,255,255,0.04);
  padding:0.65rem;
  border-radius:8px;
  color:var(--text);
  outline:none;
}
.contact-info .contact-card { background:var(--card); padding:1rem; border-radius:10px; }

/* FOOTER */
.site-footer{
  margin-top:2.5rem;
  padding:1.25rem 0;
  border-top:1px solid rgba(255,255,255,0.03);
}
.footer-inner{ display:flex; justify-content:space-between; align-items:center; gap:1rem; flex-wrap:wrap; }

/* Responsive */
@media (max-width: 980px){
  .hero{ grid-template-columns: 1fr; }
  .about-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .nav-links { display:none; position:absolute; right:1rem; top:64px; background: rgba(5,8,15,0.94); padding:0.75rem; border-radius:10px; flex-direction:column; width:220px; }
  .nav-toggle{ display:block; }
}
@media (max-width: 520px){
  .hero-image .image-placeholder{ height:200px; }
  .nav { padding:0.5rem 0; }
  .brand .logo{ font-size:1rem; }
  .headline{ font-size:1.4rem; }
}

/* ------------------------------
   EDUCATION & CERTIFICATIONS (ADDED)
   ------------------------------ */
.education { padding:3rem 0; }
.education-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap:1rem;
  align-items:start;
}

/* Education card */
.edu-card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  padding:1rem;
  border-radius:10px;
  display:flex;
  gap:0.75rem;
  align-items:flex-start;
}
.edu-left{
  min-width:72px;
  display:flex;
  flex-direction:column;
  gap:0.2rem;
  align-items:flex-start;
  color:var(--muted);
  font-weight:700;
}
.edu-type{ font-size:0.85rem; color:var(--accent); text-transform:uppercase; }
.edu-year{ font-size:0.85rem; }
.edu-body{ flex:1; }
.edu-title{ margin:0 0 0.25rem 0; font-size:1rem; }
.edu-institution{ color:var(--muted); font-size:0.95rem; margin-bottom:0.45rem; }
.edu-desc{ margin:0; color:var(--muted); font-size:0.92rem; }

/* Certifications row */
.cert-row {
  grid-column: 1 / -1; /* full width */
  display:flex;
  gap:0.5rem;
  flex-wrap:wrap;
  margin-top:0.5rem;
}
.cert-badge{
  display:inline-block;
  padding:0.5rem 0.75rem;
  border-radius:8px;
  background: rgba(255,255,255,0.02);
  border:1px solid rgba(255,255,255,0.03);
  text-decoration:none;
  color:var(--text);
  font-weight:700;
}
.cert-badge .cert-meta{
  display:block;
  font-weight:600;
  color:var(--muted);
  font-size:0.82rem;
  margin-top:0.2rem;
}

/* Responsive tweaks */
@media (max-width: 520px){
  .education-grid{ grid-template-columns: 1fr; }
  .edu-card{ flex-direction:row; }
}
.contact-info .socials {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
}

.contact-info .social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--text);
  background: rgba(255,255,255,0.03);
  font-size: 1.1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.contact-info .social:hover {
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.4);
}

/* Icon colors on hover */
#social-github:hover { background: #333; color: #fff; }
#social-linkedin:hover { background: #0077b5; color: #fff; }
#social-youtube:hover { background: #ff0000; color: #fff; }
#social-instagram:hover { 
  background: linear-gradient(45deg,#feda75,#fa7e1e,#d62976,#962fbf,#4f5bd5);
  color: #fff;
}
/* Highlight email link */
#contact-email {
  color: var(--accent);
  text-decoration: underline;
  transition: color 0.2s ease;
}

#contact-email:hover {
  color: var(--accent-2);
}