/* CSS Reset and Base */
:root {
  --accent: #19c3ff;
  --bg: #181f2a;
  --bg-light: #f6fbff;
  --text: #e6f1ff;
  --text-dark: #14213d;
  --muted: #AEEFFF;
  --card: #21293a;
  --border: #253759;
  --shadow: 0 4px 32px rgba(25,195,255,0.10);
  --radius: 14px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-main: 'Inter', Arial, sans-serif;
}

html {
  box-sizing: border-box;
  scroll-behavior: smooth;
  font-size: 16px;
}
*, *:before, *:after { box-sizing: inherit; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  line-height: 1.7;
}
body.light {
  background: var(--bg-light);
  color: var(--text-dark);
}
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px; height: 1px;
  overflow: hidden;
  z-index: 3000;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
  width: auto; height: auto;
  background: var(--accent);
  color: #fff;
  padding: 0.5em 1em;
  border-radius: 8px;
}

/* Header & Nav */
header.site-header {
  position: sticky;
  top: 0;
  background: rgba(24,31,42,0.98);
  box-shadow: 0 2px 12px rgba(25,195,255,0.04);
  z-index: 1000;
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  min-height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 1px;
  color: var(--accent);
  gap: 0.75rem;
  transition: color var(--transition);
}
.logo-img {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  object-fit: cover;
  margin-right: 0.5rem;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links li {
  display: flex;
}
.nav-links a, .nav-links button {
  color: inherit;
  font-weight: 600;
  background: none;
  text-decoration: none;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  padding: 0.3rem 0.9rem;
  border-radius: 7px;
  transition: background var(--transition), color var(--transition);
}
.nav-links a:focus, .nav-links button:focus {
  outline: 2px solid var(--accent);
}
.nav-links a:hover, .nav-links button:hover {
  background: var(--accent);
  color: var(--bg);
}
#themeToggle svg {
  display: block;
  width: 26px;
  height: 26px;
  color: var(--accent);
  transition: color var(--transition);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 42px; height: 42px;
  background: none;
  border: none;
  cursor: pointer;
  gap: 3px;
}
.nav-toggle span {
  width: 28px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
  display: block;
  transition: all .25s;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #17213a 70%, #19c3ff0d 100%);
}
.hero-inner {
  max-width: 580px;
  margin: 0 auto;
  text-align: center;
  padding: 4rem 1.5rem 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
}
.hero-photo img {
  width: 130px; height: 130px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 32px #19c3ff17;
  background: var(--card);
  margin-bottom: 0.6rem;
  object-fit: cover;
}
.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.2em;
  color: var(--accent);
  letter-spacing: 1px;
}
.hero .highlight {
  color: var(--accent);
  background: linear-gradient(90deg,var(--accent),#59e4ff 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.typewriter {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--muted);
  min-height: 2.1rem;
  letter-spacing: .02em;
}
.hero-desc {
  margin: 0.8em 0 1.2em 0;
  font-size: 1.08rem;
  color: var(--text);
  opacity: .92;
}
.hero-socials {
  display: flex;
  gap: 1.4rem;
  justify-content: center;
  margin-bottom: 1.2em;
}
.hero-socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  width: 44px; height: 44px;
  background: var(--card);
  transition: background var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 14px rgba(25,195,255,0.11);
}
.hero-socials a:focus { outline: 2px solid var(--accent); }
.hero-socials a:hover { background: var(--accent); }
.hero-socials img { width: 26px; height: 26px; }
.hero-cta {
  margin-top: 1.2em;
  font-size: 1.16rem;
}

/* <<< UPDATED FOR SOCIAL ICONS IN HERO AND CONTACT SECTIONS >>> */
.hero-socials img,
.contact-socials img {
  width: 27px;
  height: 27px;
  border-radius: 50%;
  object-fit: cover;
}
/* <<< END UPDATE >>> */

.btn {
  padding: 0.82em 2.1em;
  border-radius: 8px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  font-size: 1.06rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  box-shadow: 0 1px 12px #19c3ff22;
  margin: 0.1em 0.7em 0.1em 0;
  display: inline-block;
}
.btn:hover, .btn:focus {
  background: #1e8ebc;
  color: #fff;
  outline: none;
}

/* Section */
.section {
  padding: 4rem 0 2.5rem 0;
  max-width: 980px;
  margin: 0 auto;
}
.section-header {
  margin-bottom: 2.2rem;
  text-align: center;
}
.section-header h2 {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 1px;
  margin: 0;
}

/* About */
.about-content {
  margin: 0 auto;
  max-width: 700px;
  text-align: center;
  font-size: 1.1rem;
}
.about-content .btn {
  margin-top: 1.8rem;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.skill-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.3rem 1.2rem;
  transition: background var(--transition), color var(--transition), transform .2s;
  cursor: pointer;
  outline: none;
}
.skill-card:hover, .skill-card:focus {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-4px) scale(1.036);
}
.skill-title {
  font-weight: 700;
  font-size: 1.1rem;
  display: block;
  margin-bottom: 0.5em;
}
.skill-desc {
  font-size: 0.99rem;
  color: var(--muted);
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.8rem;
  margin-top: 1.5rem;
}

.project-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s, background .2s;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  outline: none;
}

.project-card:hover, .project-card:focus {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-5px) scale(1.032);
  box-shadow: 0 6px 32px rgba(25,195,255,0.16);
}

/* Ensure the project title (h3) stays visible on hover/focus */
.project-card h3 {
  margin-top: 0;
  margin-bottom: .7em;
  font-size: 1.23rem;
  font-weight: 700;
  color: var(--accent);
  transition: color var(--transition);
}

.project-card:hover h3,
.project-card:focus h3 {
  color: var(--bg) !important;
}

.project-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: #192334;
}

.project-body {
  padding: 1.1em 1em 1.2em 1em;
}

.project-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  font-size: 1rem;
  margin-top: 0.7em;
  display: inline-block;
  transition: color var(--transition);
}

.project-card:hover .project-link,
.project-card:focus .project-link {
  color: var(--bg);
}

/* Certifications */
.certs-grid {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}
.cert-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1em 1.2em;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background var(--transition), color var(--transition), transform .2s;
  min-width: 180px;
  max-width: 220px;
  outline: none;
}
.cert-card:hover, .cert-card:focus {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-4px) scale(1.032);
}
.cert-card img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  margin-bottom: 0.7em;
}
.cert-title {
  font-size: 1.05rem;
  font-weight: 600;
  text-align: center;
}

/* Experience Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.7rem;
  margin-top: 2rem;
  position: relative;
  padding-left: 2.4rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), #19c3ff22 90%);
  border-radius: 4px;
}
.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  position: relative;
  outline: none;
}
.timeline-dot {
  width: 19px;
  height: 19px;
  background: var(--bg);
  border: 4px solid var(--accent);
  border-radius: 50%;
  margin-top: 0.3em;
  flex-shrink: 0;
  z-index: 2;
  transition: border-color var(--transition);
}
.timeline-item:focus .timeline-dot, .timeline-item:hover .timeline-dot {
  border-color: #59e4ff;
}
.timeline-content {
  background: var(--card);
  border-radius: 8px;
  box-shadow: 0 2px 12px #19c3ff0a;
  padding: 0.9em 1.2em;
  min-width: 210px;
  max-width: 420px;
}
.timeline-content h3 {
  margin: 0 0 0.2em 0;
  font-size: 1.13rem;
  color: var(--accent);
  font-weight: 700;
}
.timeline-period {
  font-size: 0.98rem;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 0.7em;
}
.timeline-content p {
  margin: 0.5em 0 0 0;
  color: #b7eaff;
  font-size: 1.03rem;
}

/* Contact */
.contact-form {
  max-width: 400px;
  margin: 0 auto 2.3rem auto;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  background: var(--card);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 2rem 1.5rem 1.5rem 1.5rem;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  font-weight: 600;
  color: var(--accent);
  font-size: 1.02rem;
  gap: 0.3em;
}
.contact-form input, .contact-form textarea {
  background: #223048;
  border: 1.5px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 0.7em 1em;
  font-size: 1.04rem;
  font-family: inherit;
  margin-top: 0.2em;
  transition: border var(--transition), background var(--transition), color var(--transition);
}
body.light .contact-form input, body.light .contact-form textarea {
  background: #eaf7fd;
  color: var(--text-dark);
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--accent);
  outline: none;
}
.contact-form button {
  margin-top: 1.2em;
  width: 100%;
}
#formStatus {
  margin-top: 1.1em;
  font-size: 1.04rem;
  min-height: 1.7em;
  color: var(--accent);
  text-align: center;
}
.contact-socials {
  display: flex;
  gap: 1.2rem;
  justify-content: center;
  margin-top: 1.5em;
}
.contact-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--card);
  transition: background var(--transition);
}
.contact-socials a:hover, .contact-socials a:focus {
  background: var(--accent);
}
.contact-socials img { width: 27px; height: 27px; }

/* Back to top */
.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 32px;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 50%;
  width: 48px; height: 48px;
  font-size: 2rem;
  box-shadow: 0 4px 20px #19c3ff22;
  cursor: pointer;
  z-index: 999;
  display: flex;
  align-items: center; justify-content: center;
  opacity: 0.93;
  transition: opacity .2s, background .2s;
}
.back-to-top[hidden] { display: none; }
.back-to-top:hover, .back-to-top:focus { background: #1e8ebc; color: #fff; }

/* Footer */
.site-footer {
  background: #1b263b;
  color: #aeefff;
  text-align: center;
  padding: 1.2em 0 1.4em 0;
  font-size: 1rem;
  margin-top: 2.5em;
}
.site-footer a {
  color: var(--accent);
  text-decoration: underline;
}

/* Animations and Effects */
@media (prefers-reduced-motion: no-preference) {
  .fadein {
    opacity: 0;
    animation: fadeInUp .8s ease forwards;
    animation-delay: 0.18s;
  }
  @keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
    from { opacity: 0; transform: translateY(24px);}
  }
  .hero-inner, .section-header, .skills-grid, .projects-grid, .certs-grid, .timeline, .contact-form {
    animation: fadeInUp .8s cubic-bezier(.4,0,.2,1) both;
    animation-delay: .12s;
  }
}

/* Responsive Design */
@media (max-width: 850px) {
  .section { padding: 2.7rem 0 1.7rem 0;}
  .hero-inner { padding: 2.2rem 1rem 1.7rem 1rem;}
}
@media (max-width: 600px) {
  .navbar { padding: 0 0.3rem; }
  .logo-img { width: 30px; height: 30px; }
  .hero-inner { padding: 1.3rem 0.3rem 0.4rem 0.3rem;}
  .section-header h2 { font-size: 1.3rem; }
  .hero h1 { font-size: 1.5rem;}
  .section { padding: 1.3rem 0 0.8rem 0;}
  .skills-grid, .projects-grid, .certs-grid { gap: 1.1rem; }
  .cert-card { min-width: 120px; max-width: 100%;}
}
@media (max-width: 700px) {
  .nav-links {
    position: absolute;
    top: 62px; left: 0; right: 0;
    background: #181f2a;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.35rem;
    padding: 1.6rem 2rem;
    box-shadow: 0 2px 12px rgba(25,195,255,0.10);
    display: none;
    z-index: 1200;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
}

/* <-- Add the following block below --> */

body.light .nav-links a,
body.light .nav-links button {
  color: #fff !important;
}

body.light .skill-title {
  color: #fff !important;
}

body.light .project-card .project-body p {
  color: #fff !important;
}

body.light .timeline-content ul,
body.light .timeline-content ul li {
  color: #fff !important;
}

body.light .nav-links a:hover,
body.light .nav-links button:hover {
  background: var(--accent);
  color: var(--bg-light) !important;
}