*,::after,::before {
  box-sizing:border-box;
  margin:0;
  padding:0;
  font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif}
html {
  height:100%;
  min-height:100vh;
  scroll-behavior:smooth;
  font-size:16px;
  background-color:#f4f5f7;
  color:#333;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale}
body {
  min-height:100vh;
  margin:0;
  font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;
  color:#222;
  background:linear-gradient(120deg,#00334e,#026a6a 70%,#12495b);
  position:relative;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale}
body::before {
  content:"";
  position:fixed;
  top:0;
  left:0;
  width:100vw;
  height:100vh;
  pointer-events:none;
  background-image:radial-gradient(circle at 10% 20%,rgba(0,255,255,.03) 10px,transparent 12px),radial-gradient(circle at 30% 40%,rgba(0,128,255,.02) 8px,transparent 10px),radial-gradient(circle at 60% 80%,rgba(0,200,180,.025) 12px,transparent 15px),radial-gradient(circle at 70% 70%,rgba(0,128,255,.01) 6px,transparent 8px);
  background-size:200px 200px;
  z-index:-1;
  filter:blur(1.5px)}
body::after {
  content:"";
  position:fixed;
  top:50%;
  left:50%;
  width:600px;
  height:600px;
  pointer-events:none;
  background:radial-gradient(circle at center,rgba(0,220,255,.15) 0,transparent 60%);
  transform:translate(-50%,-50%);
  z-index:-1;
  filter:blur(40px)}
@keyframes pulseBG {
  0% {
    background-position:0 0,15% 20%,40% 60%,55% 55%}
  100% {
    background-position:5% 5%,20% 25%,45% 65%,60% 60%}
}
@keyframes pulseLight {
  0%,100% {
    opacity:.25}
  50% {
    opacity:.35}
}
.header-main {
  height:85vh;
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  background-color:#fff;
  text-align:center;
  padding:3rem 1rem 4rem;
  box-shadow:0 2px 6px rgba(0,0,0,.1);
  background-color:#fff;
  background-image:repeating-linear-gradient(45deg,rgba(0,113,188,.05) 0,rgba(0,113,188,.05) 1px,transparent 1px,transparent 10px),repeating-linear-gradient(-45deg,rgba(0,113,188,.05) 0,rgba(0,113,188,.05) 1px,transparent 1px,transparent 10px);
  background-size:20px 20px;
  background-position:0 0,10px 10px;
  animation:subtleBackgroundMove 40s linear infinite}
@keyframes subtleBackgroundMove {
  0% {
    background-position:0 0,10px 10px}
  100% {
    background-position:20px 20px,30px 30px}
}
.header-main::before {
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  border-radius:inherit;
  box-shadow:0 0 25px rgba(26,104,129,.08);
  animation:shadowPulse 15s ease infinite;
  z-index:-1}
@keyframes shadowPulse {
  0%,100% {
    box-shadow:0 0 20px rgba(26,104,129,.05)}
  50% {
    box-shadow:0 0 40px rgba(26,104,129,.12)}
}
.header-main img.header-photo {
  width:140px;
  height:140px;
  border-radius:50%;
  object-fit:cover;
  border:3px solid #444;
  margin-bottom:1rem}
.header-main h1 {
  font-size:2.8rem;
  font-weight:700;
  color:#1a6881;
  letter-spacing:2px;
  margin-bottom:.5rem}
.header-main p {
  font-size:1.2rem;
  color:#555;
  font-style:italic;
  font-weight:500}
.nav-main {
  position:sticky;
  top:80px;
  background-color:#fff;
  box-shadow:0 2px 4px rgba(0,0,0,.07);
  display:flex;
  justify-content:center;
  gap:2.5rem;
  padding:1.1rem 1rem;
  font-weight:600;
  font-size:1rem;
  z-index:100;
  transition:margin-top .3s ease}
.nav-main a {
  text-decoration:none;
  color:#555;
  position:relative;
  padding-bottom:.3rem;
  transition:color .3s}
.nav-main a::after {
  content:"";
  position:absolute;
  width:0;
  height:3px;
  bottom:0;
  left:50%;
  background:#1a6881;
  transition:width .3s ease,left .3s ease;
  border-radius:2px}
.nav-main a.active,.nav-main a:hover {
  color:#1a6881}
.nav-main a.active::after,.nav-main a:hover::after {
  width:100%;
  left:0}
main {
  flex:1;
  max-width:900px;
  margin:3rem 355px 5rem auto;
  padding:0 1rem;
  display:flex;
  flex-direction:column;
  gap:4rem}
.section-main {
  background:rgba(255,255,255,.9);
  border-radius:15px;
  padding:3rem 4rem;
  box-shadow:0 8px 25px rgba(0,75,115,.15);
  transition:box-shadow .3s ease;
  color:#0d253f}
.section-main:focus-within,.section-main:hover {
  box-shadow:0 10px 30px rgba(0,95,145,.25);
  background:rgba(255,255,255,.95)}
.section-main h2 {
  font-size:2rem;
  font-weight:700;
  color:#1a6881;
  margin-bottom:1rem;
  border-bottom:2px solid #1a6881;
  padding-bottom:7px;
  max-width:max-content}
.timeline {
  border-left:3px solid #1a6881;
  padding-left:1.2rem;
  display:flex;
  flex-direction:column;
  gap:1.8rem}
.timeline article {
  position:relative;
  padding-bottom:1.2rem}
.timeline article::before {
  content:"";
  position:absolute;
  left:-13px;
  top:4px;
  width:18px;
  height:18px;
  background-color:#1a6881;
  border:3px solid #fff;
  border-radius:50%;
  box-shadow:0 0 10px rgba(0,113,188,.3)}
.timeline h3 {
  font-weight:700;
  font-size:1.25rem;
  color:#1a6881;
  margin-bottom:.3rem}
.timeline span {
  font-style:italic;
  font-weight:600;
  color:#1a6881;
  font-size:.9rem}
.timeline p {
  color:#555;
  font-weight:400}
.skills-list {
  list-style:none;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:1rem;
  padding:0;
  margin-top:1.2rem}
.skills-list li {
  background-color:#e7f0fc;
  color:#004a7f;
  padding:.9rem 1.1rem;
  min-height:180px;
  line-height:1.5;
  font-weight:700;
  border-radius:10px;
  box-shadow:0 0 7px rgba(0,113,188,.5);
  cursor:default;
  user-select:none;
  text-align:center;
  transition:background-color .3s ease;
  display:flex;
  justify-content:center;
  align-items:center;
  flex-direction:column}
.skills-list li.unlocked,.skills-list li:hover {
  background-color:#1a6881;
  color:#fff;
  box-shadow:0 0 15px rgba(0,90,159,.7)}
.softskills-list {
  list-style:none;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:1rem;
  padding:0;
  margin-top:1.2rem}
.softskills-list li {
  background-color:#e7f0fc;
  color:#004a7f;
  min-height:120px;
  padding:.9rem 1.1rem;
  font-weight:700;
  border-radius:10px;
  box-shadow:0 0 7px rgba(0,113,188,.5);
  cursor:default;
  user-select:none;
  text-align:center;
  transition:background-color .3s ease;
  display:flex;
  justify-content:center;
  align-items:center;
  flex-direction:column}
.softskills-list li.unlocked,.softskills-list li:hover {
  background-color:#1a6881;
  color:#fff;
  box-shadow:0 0 15px rgba(0,90,159,.7)}
.projects-gallery {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:2rem;
  margin-top:1.5rem}
.project-card {
  background-color:#f9fbfc;
  border-radius:12px;
  padding:1rem 1.5rem;
  box-shadow:0 3px 15px rgba(0,0,0,.08);
  color:#333;
  cursor:pointer;
  transition:box-shadow .2s ease,transform .3s ease;
  display:flex;
  flex-direction:column;
  justify-content:space-between}
.project-card.unlocked,.project-card:hover {
  box-shadow:0 8px 38px rgba(0,113,188,.3);
  transform:translateY(-6px)}
.project-card img {
  border-radius:8px;
  margin-bottom:1rem;
  max-height:150px;
  object-fit:cover;
  user-select:none}
.project-card h3 {
  font-weight:600;
  margin-bottom:.5rem;
  color:#1a6881}
form {
  max-width:470px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:1.3rem}
label {
  font-weight:700;
  color:#222}
input,textarea {
  font-size:1rem;
  padding:12px 14px;
  border:1.5px solid #bbb;
  border-radius:8px;
  resize:vertical;
  transition:border-color .3s ease}
input:focus,textarea:focus {
  outline:0;
  border-color:#0071bc;
  box-shadow:0 0 12px #0071bcaa}
button.submit-btn {
  background-color:#1a6881;
  color:#fff;
  padding:14px;
  font-weight:700;
  font-size:1.15rem;
  border:none;
  border-radius:12px;
  cursor:pointer;
  transition:background-color .3s ease;
  user-select:none}
button.submit-btn:focus,button.submit-btn:hover {
  background-color:#005a9f;
  outline:0}
.qr-container {
  margin-top:2rem;
  text-align:center}
.qr-container img {
  width:120px;
  border-radius:12px;
  user-select:none}
.qr-label {
  margin-top:.7rem;
  font-weight:700;
  color:#1a6881;
  font-size:1rem}
.achievements-sidebar {
  position:fixed;
  top:120px;
  right:15px;
  width:320px;
  max-height:87vh;
  overflow-y:auto;
  background-color:#fff;
  padding:1.5rem 1.8rem;
  box-shadow:0 2px 15px rgba(0,0,0,.16);
  border-radius:12px;
  font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;
  font-size:1rem;
  color:#222;
  z-index:1200}

#achievementProgressBarWrapper svg {
  display:block;
  width:100%;
  border-radius:10px;
  overflow:hidden}
#achievementProgressBarWrapper {
  width:100%;
  overflow:hidden}

@media (min-width:1400px) {
  .achievements-sidebar {
    width:420px}
}
.achievements-sidebar h3 {
  font-weight:700;
  margin-bottom:1rem;
  color:#1a6881;
  border-bottom:2px solid #1a6881;
  padding-bottom:6px;
  background:#fff;
  position:relative;
  z-index:100}
.achievements-sidebar ul {
  list-style:none;
  padding-left:0;
  margin-bottom:1rem}
.achievements-sidebar li {
  padding:10px 14px;
  border-radius:9px;
  margin-bottom:10px;
  background-color:#e7f0fc;
  color:#1a6881;
  box-shadow:inset 0 0 8px #0071bc50;
  font-weight:600;
  cursor:default;
  user-select:none}
.achievements-sidebar li.unlocked {
  padding:10px 14px;
  border-radius:20px;
  margin-bottom:10px;
  background-color:#1a6881;
  color:#fff;
  box-shadow:inset 0 0 15px 3px #0071bcdd, 0 0 12px rgba(26,104,129,.35);
  transition:all .3s ease}
@media (max-width:1300px) {
  .section-main {
    max-width:700px}
  .achievements-sidebar ul {
    list-style:none;
    padding-left:0;
    margin-bottom:1rem}
  .achievements-sidebar {
    max-height:100vh}
}
.congrats-message {
  margin-top:10px;
  padding:12px 16px;
  background-color:#d4edda;
  border-radius:12px;
  color:#155724;
  font-weight:700;
  font-size:1.1rem;
  border:2px solid #c3e6cb;
  text-align:center;
  box-shadow:0 0 8px #c3e6cbaa}
.btn-contact {
  display:block;
  width:100%;
  text-align:center;
  background:linear-gradient(135deg,#2491b6 0%,#1a6881 50%,#00334e 100%);
  color:#fff;
  font-weight:700;
  font-size:1.15rem;
  padding:16px 0;
  border-radius:50px;
  cursor:pointer;
  user-select:none;
  text-decoration:none;
  box-shadow:0 8px 24px rgba(26,104,129,.5),inset 0 1px 0 rgba(255,255,255,.2);
  transition:transform .2s ease,box-shadow .2s ease;
  letter-spacing:.5px;
  text-transform:uppercase}
.btn-contact::before {
  content:"\2709  ";
  font-size:1.3rem;
  vertical-align:middle;
  margin-right:4px}
.btn-contact:focus,.btn-contact:hover {
  background:linear-gradient(135deg,#2bb3e0 0%,#2491b6 50%,#1a6881 100%);
  transform:translateY(-2px);
  box-shadow:0 12px 28px rgba(36,145,182,.6),inset 0 1px 0 rgba(255,255,255,.3);
  outline:0}
.footer-main {
  background-color:#fff;
  border-top:1px solid #e2e8f0;
  padding:2.2rem 1rem;
  text-align:center;
  color:#555;
  font-size:.95rem;
  margin-top:auto}
.social-links {
  display:flex;
  justify-content:center;
  gap:1.7rem;
  margin-top:1rem}
.social-links a {
  color:#1a6881;
  font-size:1.6rem;
  transition:color .3s ease}
.social-links a:focus,.social-links a:hover {
  color:#005a9f}
@media (max-width:1024px) {
  main {
    max-width:85vw}
  .achievements-sidebar {
    position:static;
    width:100%;
    max-height:none;
    margin:2rem 0 3rem;
    box-shadow:none;
    border-radius:14px}
}
@media (max-width:600px) {
  .nav-main {
    flex-wrap:wrap;
    gap:.8rem}
  header h1 {
    font-size:2rem}
  .skills-list {
    grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}
  .softskills-list {
    grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}
  .projects-gallery {
    grid-template-columns:1fr}
  .qr-container img {
    width:100px}
  .nav-main a[href="#contact"] {
    display:none}
  .nav-main.show-contact a[href="#contact"] {
    display:inline-block}
  #achievementProgressBarContainer {
    position:relative;
    width:100%;
    height:18px;
    background-color:#e6e8eb;
    border-radius:18px;
    overflow:hidden;
    box-shadow:inset 0 2px 6px rgba(0,0,0,.1);
    margin-bottom:18px}
  #achievementProgressText {
    background-color:rgba(255,255,255,.5);
    border-radius:10px;
    padding:2px 8px;
    color:#004a7f;
    font-weight:700;
    user-select:none;
    text-shadow:0 0 2px #ffffffbb}
  .achievement-icon {
    vertical-align:middle;
    user-select:none;
    pointer-events:none;
    transition:transform .3s ease}
  .project-card.unlocked .achievement-icon,.skills-list li.unlocked .achievement-icon {
    transform:scale(1.3);
    color:gold}
}
@media (min-width:1025px) and (max-width:1300px) {
  .section-main {
    max-width:700px}
    .achievements-sidebar ul {
      list-style:none;
      padding-left:0;
      margin-bottom:1rem}
    .achievements-sidebar {
      position:fixed;
    top:80px;
    right:15px;
    width:320px;
    max-height:80vh;
    overflow-y:auto;
    background-color:#fff;
    padding:1.5rem 1.8rem;
    box-shadow:0 2px 15px rgba(0,0,0,.16);
    border-radius:12px;
    font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;
    font-size:1rem;
    color:#222;
    z-index:1200}
}
.game-bar {
  width:12px;
  height:32px;
  background:#0ff;
  animation:pulseGame 1.2s infinite ease-in-out;
  border-radius:4px;
  box-shadow:0 0 6px #0ff;
  margin:0 3px}
#loadingGame {
  display:none}
#loadingGame.active {
  display:flex!important}
.game-bar:first-child {
  animation-delay:0s}
.game-bar:nth-child(2) {
  animation-delay:.3s}
.game-bar:nth-child(3) {
  animation-delay:.6s}
.game-bar:nth-child(4) {
  animation-delay:.9s}
@keyframes pulseGame {
  0%,100% {
    height:32px;
    background-color:#0ff;
    box-shadow:0 0 6px #0ff}
  50% {
    height:18px;
    background-color:#06a;
    box-shadow:0 0 15px #06a}
}
.welcome-minimized {
  display:flex!important;
  justify-content:center!important;
  align-items:center!important;
  padding:0 2rem!important;
  height:80px!important;
  width:100vw!important;
  border-radius:0 0 15px 15px!important;
  position:fixed!important;
  top:0!important;
  left:0!important;
  z-index:1100!important;
  color:#fff;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  position:relative;
  background:linear-gradient(120deg,#00334e,#026a6a 70%,#12495b)}
.welcome-minimized::before {
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  border-radius:0 0 15px 15px;
  background:linear-gradient(120deg,#00334e,#026a6a 70%,#12495b);
  background-image:radial-gradient(circle at 10% 20%,rgba(0,255,255,.03) 10px,transparent 12px),radial-gradient(circle at 30% 40%,rgba(0,128,255,.02) 8px,transparent 10px),radial-gradient(circle at 60% 80%,rgba(0,200,180,.025) 12px,transparent 15px),radial-gradient(circle at 70% 70%,rgba(0,128,255,.01) 6px,transparent 8px);
  background-size:200px 200px;
  filter:blur(1.5px);
  animation:pulseBG 6s infinite alternate ease-in-out;
  z-index:-2}
.welcome-minimized .title-wrapper {
  width:100%;
  display:flex;
  justify-content:flex-end;
  position:relative;
  z-index:1}
.welcome-minimized h1 {
  margin:0;
  font-size:1.5rem;
  text-align:right;
  display:inline-block;
  color:#fff;
  user-select:text}
.welcome-minimized::after {
  content:"";
  position:absolute;
  top:0;
  left:50%;
  width:350px;
  height:350px;
  pointer-events:none;
  background:radial-gradient(circle at center,rgba(0,220,255,.15) 0,transparent 60%);
  transform:translate(-50%,-50%);
  animation:pulseLight 6s infinite ease-in-out;
  z-index:-1;
  border-radius:50%}
.welcome-minimized h1 {
  margin-left:auto!important;
  text-align:right!important;
  width:fit-content!important;
  display:inline-block!important}
.welcome-minimized p {
  display:none!important}
.welcome-minimized .title-wrapper {
  width:100%;
  display:flex;
  justify-content:flex-end}
.welcome-minimized .title-wrapper h1 {
  margin:0;
  font-size:1.5rem;
  text-align:right;
  display:inline-block}
.welcome-minimized .title-wrapper h2 {
  display:none!important}
.skill-card {
  perspective:1000px;
  cursor:pointer}
.card-inner {
  position:relative;
  width:100%;
  height:100%;
  transition:transform .6s;
  transform-style:preserve-3d}
.skill-card:hover .card-inner {
  transform:rotateY(180deg)}
.card-back,.card-front {
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  backface-visibility:hidden;
  border-radius:10px;
  padding:1rem;
  box-sizing:border-box;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  color:#fff}
.card-front {
  background:linear-gradient(120deg,#00334e,#026a6a 70%,#12495b);
  box-shadow:0 0 7px rgba(2,106,106,.6);
  position:relative;
  padding-top:2rem}
.card-back {
  background:linear-gradient(120deg,#0071bc,#005a9f);
  transform:rotateY(180deg);
  box-shadow:0 0 15px rgba(0,90,159,.7);
  font-weight:500;
  font-size:.9rem;
  padding:1rem;
  text-align:center}
.flip-icon {
  position:absolute;
  top:8px;
  right:8px;
  font-size:1.5rem;
  color:#fff;
  cursor:pointer;
  user-select:none;
  z-index:10;
  transition:color .3s ease}
.card-front:focus-within .flip-icon,.card-front:hover .flip-icon {
  color:rgba(249,250,250,.85)}
.scroll-tip {
  position:absolute;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  font-weight:600;
  color:#1a6881;
  display:flex;
  flex-direction:column;
  align-items:center;
  cursor:pointer;
  user-select:none;
  animation:fadePulse 2.5s infinite ease-in-out;
  font-size:1rem}
.arrow-wrapper {
  display:flex;
  justify-content:center;
  align-items:center}
.arrow-down {
  margin-top:6px;
  width:24px;
  height:24px;
  color:#1a6881;
  border-left:3px solid #1a6881;
  border-bottom:3px solid #1a6881;
  transform:rotate(-45deg);
  animation:moveDown 2.5s infinite ease-in-out}
@keyframes fadePulse {
  0%,100% {
    opacity:1}
  50% {
    opacity:.5}
}
@keyframes moveDown {
  0%,100% {
    transform:rotate(-45deg) translateY(0)}
  50% {
    transform:rotate(-45deg) translateY(10px) translateX(-10px)}
}
.page-wrapper {
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:linear-gradient(120deg,#00334e,#026a6a 70%,#12495b)}
/* ===== Custom additions ===== */
/* Contact Me button pulse on all achievements unlocked */
@keyframes btnPulse  {
  0%, 100%  {
    box-shadow:0 8px 24px rgba(36,145,182,.5),0 0 0 0 rgba(36,145,182,.55);
  }
  50%  {
    box-shadow:0 8px 24px rgba(36,145,182,.5),0 0 0 18px rgba(36,145,182,0);
  }
}
.btn-contact.btn-highlight  {
  animation:btnPulse 1s ease-in-out 3;
  border:2px solid #2491b6;
}
/* Sidebar glow when Contact Me appears */
.achievements-sidebar.sidebar-highlight  {
  animation:sidebarGlow 1s ease-in-out 3;
}
@keyframes sidebarGlow  {
  0%, 100%  {
    box-shadow:0 2px 15px rgba(0,0,0,.16);
  }
  50%  {
    box-shadow:0 0 30px rgba(36,145,182,.7),0 2px 15px rgba(0,0,0,.16);
  }
}

/* ---- Version Switcher ---- */
.version-switcher { position: relative; margin-left: 1rem; }
.version-switcher > button {
  background: transparent; border: 1px solid #ddd; border-radius: 6px;
  padding: 0.3rem 0.75rem; font-size: 0.85rem; font-weight: 600;
  color: #555; cursor: pointer; transition: all 0.2s ease; font-family: inherit;
}
.version-switcher > button:hover { border-color: #1a6881; color: #1a6881; }
.version-menu {
  position: absolute; top: calc(100% + 0.5rem); right: 0; min-width: 10rem;
  background: #fff; border: 1px solid rgba(0,0,0,0.1); border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: all 0.2s ease; z-index: 101;
}
.version-switcher:hover .version-menu,
.version-switcher:focus-within .version-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.version-menu a {
  display: block; padding: 0.6rem 1rem; font-size: 0.875rem; color: #555;
  text-decoration: none; transition: all 0.15s ease;
}
.version-menu a.active { color: #1a6881; font-weight: 600; }
.version-menu a:not(.active):hover { background: #f5f5f5; color: #1a6881; }
.version-menu-header {
  display: block; padding: 0.5rem 1rem 0.25rem; font-size: 0.65rem;
  color: #999; text-transform: uppercase; letter-spacing: 0.05em; pointer-events: none;
}
.version-menu-divider { height: 1px; background: #eee; margin: 0 0.75rem; }

/* ---- Mobile centering ---- */
@media (max-width: 768px) {
  main { margin: 1rem auto; max-width: 95vw; padding: 0 0.5rem; }
  .section-main { padding: 1.5rem; }
}